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-rw-r--r--3rdparty/libflac/src/flac/encode.c2936
1 files changed, 2936 insertions, 0 deletions
diff --git a/3rdparty/libflac/src/flac/encode.c b/3rdparty/libflac/src/flac/encode.c
new file mode 100644
index 00000000000..8d2434993e5
--- /dev/null
+++ b/3rdparty/libflac/src/flac/encode.c
@@ -0,0 +1,2936 @@
+/* flac - Command-line FLAC encoder/decoder
+ * Copyright (C) 2000,2001,2002,2003,2004,2005,2006,2007 Josh Coalson
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ */
+
+#if HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+#if defined _WIN32 && !defined __CYGWIN__
+/* where MSVC puts unlink() */
+# include <io.h>
+#else
+# include <unistd.h>
+#endif
+#if defined _MSC_VER || defined __MINGW32__
+#include <sys/types.h> /* for off_t */
+#if _MSC_VER <= 1600 /* @@@ [2G limit] */
+#define fseeko fseek
+#define ftello ftell
+#endif
+#endif
+#include <errno.h>
+#include <limits.h> /* for LONG_MAX */
+#include <math.h> /* for floor() */
+#include <stdio.h> /* for FILE etc. */
+#include <stdlib.h> /* for malloc */
+#include <string.h> /* for strcmp(), strerror() */
+#include "FLAC/all.h"
+#include "share/alloc.h"
+#include "share/grabbag.h"
+#include "encode.h"
+
+#ifdef min
+#undef min
+#endif
+#define min(x,y) ((x)<(y)?(x):(y))
+#ifdef max
+#undef max
+#endif
+#define max(x,y) ((x)>(y)?(x):(y))
+
+/* this MUST be >= 588 so that sector aligning can take place with one read */
+#define CHUNK_OF_SAMPLES 2048
+
+typedef struct {
+#if FLAC__HAS_OGG
+ FLAC__bool use_ogg;
+#endif
+ FLAC__bool verify;
+ FLAC__bool is_stdout;
+ FLAC__bool outputfile_opened; /* true if we successfully opened the output file and we want it to be deleted if there is an error */
+ const char *inbasefilename;
+ const char *infilename;
+ const char *outfilename;
+
+ FLAC__uint64 skip;
+ FLAC__uint64 until; /* a value of 0 mean end-of-stream (i.e. --until=-0) */
+ FLAC__bool treat_warnings_as_errors;
+ FLAC__bool continue_through_decode_errors;
+ FLAC__bool replay_gain;
+ unsigned channels;
+ unsigned bits_per_sample;
+ unsigned sample_rate;
+ FLAC__uint64 unencoded_size;
+ FLAC__uint64 total_samples_to_encode;
+ FLAC__uint64 bytes_written;
+ FLAC__uint64 samples_written;
+ unsigned stats_mask;
+
+ FLAC__StreamEncoder *encoder;
+
+ FILE *fin;
+ FLAC__StreamMetadata *seek_table_template;
+} EncoderSession;
+
+/* this is data attached to the FLAC decoder when encoding from a FLAC file */
+typedef struct {
+ EncoderSession *encoder_session;
+ off_t filesize;
+ const FLAC__byte *lookahead;
+ unsigned lookahead_length;
+ size_t num_metadata_blocks;
+ FLAC__StreamMetadata *metadata_blocks[1024]; /*@@@ BAD MAGIC number */
+ FLAC__uint64 samples_left_to_process;
+ FLAC__bool fatal_error;
+} FLACDecoderData;
+
+const int FLAC_ENCODE__DEFAULT_PADDING = 8192;
+
+static FLAC__bool is_big_endian_host_;
+
+static unsigned char ucbuffer_[CHUNK_OF_SAMPLES*FLAC__MAX_CHANNELS*((FLAC__REFERENCE_CODEC_MAX_BITS_PER_SAMPLE+7)/8)];
+static signed char *scbuffer_ = (signed char *)ucbuffer_;
+static FLAC__uint16 *usbuffer_ = (FLAC__uint16 *)ucbuffer_;
+static FLAC__int16 *ssbuffer_ = (FLAC__int16 *)ucbuffer_;
+
+static FLAC__int32 in_[FLAC__MAX_CHANNELS][CHUNK_OF_SAMPLES];
+static FLAC__int32 *input_[FLAC__MAX_CHANNELS];
+
+
+/*
+ * unpublished debug routines from the FLAC libs
+ */
+extern FLAC__bool FLAC__stream_encoder_disable_constant_subframes(FLAC__StreamEncoder *encoder, FLAC__bool value);
+extern FLAC__bool FLAC__stream_encoder_disable_fixed_subframes(FLAC__StreamEncoder *encoder, FLAC__bool value);
+extern FLAC__bool FLAC__stream_encoder_disable_verbatim_subframes(FLAC__StreamEncoder *encoder, FLAC__bool value);
+extern FLAC__bool FLAC__stream_encoder_set_do_md5(FLAC__StreamEncoder *encoder, FLAC__bool value);
+
+/*
+ * local routines
+ */
+static FLAC__bool EncoderSession_construct(EncoderSession *e, FLAC__bool use_ogg, FLAC__bool verify, FLAC__bool treat_warnings_as_errors, FLAC__bool continue_through_decode_errors, FILE *infile, const char *infilename, const char *outfilename);
+static void EncoderSession_destroy(EncoderSession *e);
+static int EncoderSession_finish_ok(EncoderSession *e, int info_align_carry, int info_align_zero, foreign_metadata_t *foreign_metadata);
+static int EncoderSession_finish_error(EncoderSession *e);
+static FLAC__bool EncoderSession_init_encoder(EncoderSession *e, encode_options_t options, FLAC__uint32 channel_mask, unsigned channels, unsigned bps, unsigned sample_rate, const foreign_metadata_t *foreign_metadata, FLACDecoderData *flac_decoder_data);
+static FLAC__bool EncoderSession_process(EncoderSession *e, const FLAC__int32 * const buffer[], unsigned samples);
+static FLAC__bool convert_to_seek_table_template(const char *requested_seek_points, int num_requested_seek_points, FLAC__StreamMetadata *cuesheet, EncoderSession *e);
+static FLAC__bool canonicalize_until_specification(utils__SkipUntilSpecification *spec, const char *inbasefilename, unsigned sample_rate, FLAC__uint64 skip, FLAC__uint64 total_samples_in_input);
+static FLAC__bool verify_metadata(const EncoderSession *e, FLAC__StreamMetadata **metadata, unsigned num_metadata);
+static FLAC__bool format_input(FLAC__int32 *dest[], unsigned wide_samples, FLAC__bool is_big_endian, FLAC__bool is_unsigned_samples, unsigned channels, unsigned bps, unsigned shift, size_t *channel_map);
+static void encoder_progress_callback(const FLAC__StreamEncoder *encoder, FLAC__uint64 bytes_written, FLAC__uint64 samples_written, unsigned frames_written, unsigned total_frames_estimate, void *client_data);
+static FLAC__StreamDecoderReadStatus flac_decoder_read_callback(const FLAC__StreamDecoder *decoder, FLAC__byte buffer[], size_t *bytes, void *client_data);
+static FLAC__StreamDecoderSeekStatus flac_decoder_seek_callback(const FLAC__StreamDecoder *decoder, FLAC__uint64 absolute_byte_offset, void *client_data);
+static FLAC__StreamDecoderTellStatus flac_decoder_tell_callback(const FLAC__StreamDecoder *decoder, FLAC__uint64 *absolute_byte_offset, void *client_data);
+static FLAC__StreamDecoderLengthStatus flac_decoder_length_callback(const FLAC__StreamDecoder *decoder, FLAC__uint64 *stream_length, void *client_data);
+static FLAC__bool flac_decoder_eof_callback(const FLAC__StreamDecoder *decoder, void *client_data);
+static FLAC__StreamDecoderWriteStatus flac_decoder_write_callback(const FLAC__StreamDecoder *decoder, const FLAC__Frame *frame, const FLAC__int32 * const buffer[], void *client_data);
+static void flac_decoder_metadata_callback(const FLAC__StreamDecoder *decoder, const FLAC__StreamMetadata *metadata, void *client_data);
+static void flac_decoder_error_callback(const FLAC__StreamDecoder *decoder, FLAC__StreamDecoderErrorStatus status, void *client_data);
+static FLAC__bool parse_cuesheet(FLAC__StreamMetadata **cuesheet, const char *cuesheet_filename, const char *inbasefilename, FLAC__bool is_cdda, FLAC__uint64 lead_out_offset, FLAC__bool treat_warnings_as_errors);
+static void print_stats(const EncoderSession *encoder_session);
+static void print_error_with_init_status(const EncoderSession *e, const char *message, FLAC__StreamEncoderInitStatus init_status);
+static void print_error_with_state(const EncoderSession *e, const char *message);
+static void print_verify_error(EncoderSession *e);
+static FLAC__bool read_little_endian_uint16(FILE *f, FLAC__uint16 *val, FLAC__bool eof_ok, const char *fn);
+static FLAC__bool read_little_endian_uint32(FILE *f, FLAC__uint32 *val, FLAC__bool eof_ok, const char *fn);
+static FLAC__bool read_big_endian_uint16(FILE *f, FLAC__uint16 *val, FLAC__bool eof_ok, const char *fn);
+static FLAC__bool read_big_endian_uint32(FILE *f, FLAC__uint32 *val, FLAC__bool eof_ok, const char *fn);
+static FLAC__bool read_sane_extended(FILE *f, FLAC__uint32 *val, FLAC__bool eof_ok, const char *fn);
+static FLAC__bool fskip_ahead(FILE *f, FLAC__uint64 offset);
+static unsigned count_channel_mask_bits(FLAC__uint32 mask);
+#if 0
+static FLAC__uint32 limit_channel_mask(FLAC__uint32 mask, unsigned channels);
+#endif
+
+/*
+ * public routines
+ */
+int flac__encode_aif(FILE *infile, off_t infilesize, const char *infilename, const char *outfilename, const FLAC__byte *lookahead, unsigned lookahead_length, wav_encode_options_t options, FLAC__bool is_aifc)
+{
+ EncoderSession encoder_session;
+ FLAC__uint16 x;
+ FLAC__uint32 xx;
+ unsigned int channels= 0U, bps= 0U, shift= 0U, sample_rate= 0U, sample_frames= 0U;
+ size_t channel_map[FLAC__MAX_CHANNELS];
+ FLAC__bool got_comm_chunk= false, got_ssnd_chunk= false;
+ int info_align_carry= -1, info_align_zero= -1;
+ FLAC__bool is_big_endian_pcm = true;
+
+ (void)infilesize; /* silence compiler warning about unused parameter */
+ (void)lookahead; /* silence compiler warning about unused parameter */
+ (void)lookahead_length; /* silence compiler warning about unused parameter */
+
+ if(!
+ EncoderSession_construct(
+ &encoder_session,
+#if FLAC__HAS_OGG
+ options.common.use_ogg,
+#else
+ /*use_ogg=*/false,
+#endif
+ options.common.verify,
+ options.common.treat_warnings_as_errors,
+ options.common.continue_through_decode_errors,
+ infile,
+ infilename,
+ outfilename
+ )
+ )
+ return 1;
+
+ /* initialize default channel map that preserves channel order */
+ {
+ size_t i;
+ for(i = 0; i < sizeof(channel_map)/sizeof(channel_map[0]); i++)
+ channel_map[i] = i;
+ }
+
+ if(options.foreign_metadata) {
+ const char *error;
+ if(!flac__foreign_metadata_read_from_aiff(options.foreign_metadata, infilename, &error)) {
+ flac__utils_printf(stderr, 1, "%s: ERROR reading foreign metadata: %s\n", encoder_session.inbasefilename, error);
+ return EncoderSession_finish_error(&encoder_session);
+ }
+ }
+
+ /* lookahead[] already has "FORMxxxxAIFF", do sub-chunks */
+
+ while(1) {
+ size_t c= 0U;
+ char chunk_id[5] = { '\0', '\0', '\0', '\0', '\0' }; /* one extra byte for terminating NUL so we can also treat it like a C string */
+
+ /* chunk identifier; really conservative about behavior of fread() and feof() */
+ if(feof(infile) || ((c= fread(chunk_id, 1U, 4U, infile)), c==0U && feof(infile)))
+ break;
+ else if(c<4U || feof(infile)) {
+ flac__utils_printf(stderr, 1, "%s: ERROR: incomplete chunk identifier\n", encoder_session.inbasefilename);
+ return EncoderSession_finish_error(&encoder_session);
+ }
+
+ if(got_comm_chunk==false && !memcmp(chunk_id, "COMM", 4)) { /* common chunk */
+ unsigned long skip;
+ const FLAC__uint32 minimum_comm_size = (is_aifc? 22 : 18);
+
+ /* COMM chunk size */
+ if(!read_big_endian_uint32(infile, &xx, false, encoder_session.inbasefilename))
+ return EncoderSession_finish_error(&encoder_session);
+ else if(xx<minimum_comm_size) {
+ flac__utils_printf(stderr, 1, "%s: ERROR: non-standard %s 'COMM' chunk has length = %u\n", encoder_session.inbasefilename, is_aifc? "AIFF-C" : "AIFF", (unsigned int)xx);
+ return EncoderSession_finish_error(&encoder_session);
+ }
+ else if(!is_aifc && xx!=minimum_comm_size) {
+ flac__utils_printf(stderr, 1, "%s: WARNING: non-standard %s 'COMM' chunk has length = %u, expected %u\n", encoder_session.inbasefilename, is_aifc? "AIFF-C" : "AIFF", (unsigned int)xx, minimum_comm_size);
+ if(encoder_session.treat_warnings_as_errors)
+ return EncoderSession_finish_error(&encoder_session);
+ }
+ skip= (xx-minimum_comm_size)+(xx & 1U);
+
+ /* number of channels */
+ if(!read_big_endian_uint16(infile, &x, false, encoder_session.inbasefilename))
+ return EncoderSession_finish_error(&encoder_session);
+ else if(x==0U || x>FLAC__MAX_CHANNELS) {
+ flac__utils_printf(stderr, 1, "%s: ERROR: unsupported number channels %u\n", encoder_session.inbasefilename, (unsigned int)x);
+ return EncoderSession_finish_error(&encoder_session);
+ }
+ else if(x>2U && !options.common.channel_map_none) {
+ flac__utils_printf(stderr, 1, "%s: ERROR: unsupported number channels %u for AIFF\n", encoder_session.inbasefilename, (unsigned int)x);
+ return EncoderSession_finish_error(&encoder_session);
+ }
+ else if(options.common.sector_align && x!=2U) {
+ flac__utils_printf(stderr, 1, "%s: ERROR: file has %u channels, must be 2 for --sector-align\n", encoder_session.inbasefilename, (unsigned int)x);
+ return EncoderSession_finish_error(&encoder_session);
+ }
+ channels= x;
+
+ /* number of sample frames */
+ if(!read_big_endian_uint32(infile, &xx, false, encoder_session.inbasefilename))
+ return EncoderSession_finish_error(&encoder_session);
+ sample_frames= xx;
+
+ /* bits per sample */
+ if(!read_big_endian_uint16(infile, &x, false, encoder_session.inbasefilename))
+ return EncoderSession_finish_error(&encoder_session);
+ else if(x<4U || x>24U) {
+ flac__utils_printf(stderr, 1, "%s: ERROR: unsupported bits-per-sample %u\n", encoder_session.inbasefilename, (unsigned int)x);
+ return EncoderSession_finish_error(&encoder_session);
+ }
+ else if(options.common.sector_align && x!=16U) {
+ flac__utils_printf(stderr, 1, "%s: ERROR: file has %u bits-per-sample, must be 16 for --sector-align\n", encoder_session.inbasefilename, (unsigned int)x);
+ return EncoderSession_finish_error(&encoder_session);
+ }
+ bps= x;
+ shift= (bps%8)? 8-(bps%8) : 0; /* SSND data is always byte-aligned, left-justified but format_input() will double-check */
+ bps+= shift;
+
+ /* sample rate */
+ if(!read_sane_extended(infile, &xx, false, encoder_session.inbasefilename))
+ return EncoderSession_finish_error(&encoder_session);
+ else if(!FLAC__format_sample_rate_is_valid(xx)) {
+ flac__utils_printf(stderr, 1, "%s: ERROR: unsupported sample rate %u\n", encoder_session.inbasefilename, (unsigned int)xx);
+ return EncoderSession_finish_error(&encoder_session);
+ }
+ else if(options.common.sector_align && xx!=44100U) {
+ flac__utils_printf(stderr, 1, "%s: ERROR: file's sample rate is %u, must be 44100 for --sector-align\n", encoder_session.inbasefilename, (unsigned int)xx);
+ return EncoderSession_finish_error(&encoder_session);
+ }
+ sample_rate= xx;
+
+ /* check compression type for AIFF-C */
+ if(is_aifc) {
+ if(!read_big_endian_uint32(infile, &xx, false, encoder_session.inbasefilename))
+ return EncoderSession_finish_error(&encoder_session);
+ if(xx == 0x736F7774) /* "sowt" */
+ is_big_endian_pcm = false;
+ else if(xx == 0x4E4F4E45) /* "NONE" */
+ ; /* nothing to do, we already default to big-endian */
+ else {
+ flac__utils_printf(stderr, 1, "%s: ERROR: can't handle AIFF-C compression type \"%c%c%c%c\"\n", encoder_session.inbasefilename, (char)(xx>>24), (char)((xx>>16)&8), (char)((xx>>8)&8), (char)(xx&8));
+ return EncoderSession_finish_error(&encoder_session);
+ }
+ }
+
+ /* set channel mapping */
+ /* FLAC order follows SMPTE and WAVEFORMATEXTENSIBLE but with fewer channels, which are: */
+ /* front left, front right, center, LFE, back left, back right, surround left, surround right */
+ /* specs say the channel ordering is:
+ * 1 2 3 4 5 6
+ * ___________________________________________________
+ * 2 stereo l r
+ * 3 l r c
+ * 4 l c r S
+ * quad (ambiguous with 4ch) Fl Fr Bl Br
+ * 5 Fl Fr Fc Sl Sr
+ * 6 l lc c r rc S
+ * l:left r:right c:center Fl:front-left Fr:front-right Bl:back-left Br:back-right Lc:left-center Rc:right-center S:surround
+ * so we only have unambiguous mappings for 2, 3, and 5 channels
+ */
+ if(
+ options.common.channel_map_none ||
+ channels == 1 || /* 1 channel: (mono) */
+ channels == 2 || /* 2 channels: left, right */
+ channels == 3 || /* 3 channels: left, right, center */
+ channels == 5 /* 5 channels: front left, front right, center, surround left, surround right */
+ ) {
+ /* keep default channel order */
+ }
+ else {
+ flac__utils_printf(stderr, 1, "%s: ERROR: unsupported number channels %u for AIFF\n", encoder_session.inbasefilename, channels);
+ return EncoderSession_finish_error(&encoder_session);
+ }
+
+ /* skip any extra data in the COMM chunk */
+ if(!fskip_ahead(infile, skip)) {
+ flac__utils_printf(stderr, 1, "%s: ERROR during read while skipping over extra COMM data\n", encoder_session.inbasefilename);
+ return EncoderSession_finish_error(&encoder_session);
+ }
+
+ /*
+ * now that we know the sample rate, canonicalize the
+ * --skip string to a number of samples:
+ */
+ flac__utils_canonicalize_skip_until_specification(&options.common.skip_specification, sample_rate);
+ FLAC__ASSERT(options.common.skip_specification.value.samples >= 0);
+ encoder_session.skip = (FLAC__uint64)options.common.skip_specification.value.samples;
+ FLAC__ASSERT(!options.common.sector_align || encoder_session.skip == 0);
+
+ got_comm_chunk= true;
+ }
+ else if(got_ssnd_chunk==false && !memcmp(chunk_id, "SSND", 4)) { /* sound data chunk */
+ unsigned int offset= 0U, block_size= 0U, align_remainder= 0U, data_bytes;
+ const size_t bytes_per_frame= channels*(bps>>3);
+ FLAC__uint64 total_samples_in_input, trim = 0;
+ FLAC__bool pad= false;
+
+ if(got_comm_chunk==false) {
+ flac__utils_printf(stderr, 1, "%s: ERROR: got 'SSND' chunk before 'COMM' chunk\n", encoder_session.inbasefilename);
+ return EncoderSession_finish_error(&encoder_session);
+ }
+
+ /* SSND chunk size */
+ if(!read_big_endian_uint32(infile, &xx, false, encoder_session.inbasefilename))
+ return EncoderSession_finish_error(&encoder_session);
+ if(options.common.ignore_chunk_sizes) {
+ FLAC__ASSERT(!options.common.sector_align);
+ data_bytes = (unsigned)(-(int)bytes_per_frame); /* max out data_bytes; we'll use EOF as signal to stop reading */
+ }
+ else {
+ data_bytes= xx;
+ data_bytes-= 8U; /* discount the offset and block size fields */
+ }
+ pad= (data_bytes & 1U) ? true : false;
+
+ /* offset */
+ if(!read_big_endian_uint32(infile, &xx, false, encoder_session.inbasefilename))
+ return EncoderSession_finish_error(&encoder_session);
+ offset= xx;
+ data_bytes-= offset;
+
+ /* block size */
+ if(!read_big_endian_uint32(infile, &xx, false, encoder_session.inbasefilename))
+ return EncoderSession_finish_error(&encoder_session);
+ else if(xx!=0U) {
+ flac__utils_printf(stderr, 1, "%s: ERROR: block size is %u; must be 0\n", encoder_session.inbasefilename, (unsigned int)xx);
+ return EncoderSession_finish_error(&encoder_session);
+ }
+ block_size= xx;
+
+ /* skip any SSND offset bytes */
+ FLAC__ASSERT(offset<=LONG_MAX);
+ if(!fskip_ahead(infile, offset)) {
+ flac__utils_printf(stderr, 1, "%s: ERROR: skipping offset in SSND chunk\n", encoder_session.inbasefilename);
+ return EncoderSession_finish_error(&encoder_session);
+ }
+ if(data_bytes!=(sample_frames*bytes_per_frame)) {
+ flac__utils_printf(stderr, 1, "%s: ERROR: SSND chunk size inconsistent with sample frame count\n", encoder_session.inbasefilename);
+ return EncoderSession_finish_error(&encoder_session);
+ }
+
+ /* *options.common.align_reservoir_samples will be 0 unless --sector-align is used */
+ FLAC__ASSERT(options.common.sector_align || *options.common.align_reservoir_samples == 0);
+ total_samples_in_input = data_bytes / bytes_per_frame + *options.common.align_reservoir_samples;
+
+ /*
+ * now that we know the input size, canonicalize the
+ * --until string to an absolute sample number:
+ */
+ if(!canonicalize_until_specification(&options.common.until_specification, encoder_session.inbasefilename, sample_rate, encoder_session.skip, total_samples_in_input))
+ return EncoderSession_finish_error(&encoder_session);
+ encoder_session.until = (FLAC__uint64)options.common.until_specification.value.samples;
+ FLAC__ASSERT(!options.common.sector_align || encoder_session.until == 0);
+
+ if(encoder_session.skip>0U) {
+ if(!fskip_ahead(infile, encoder_session.skip*bytes_per_frame)) {
+ flac__utils_printf(stderr, 1, "%s: ERROR during read while skipping samples\n", encoder_session.inbasefilename);
+ return EncoderSession_finish_error(&encoder_session);
+ }
+ }
+
+ data_bytes-= (unsigned int)encoder_session.skip*bytes_per_frame; /*@@@ WATCHOUT: 4GB limit */
+ if(options.common.ignore_chunk_sizes) {
+ encoder_session.total_samples_to_encode= 0;
+ flac__utils_printf(stderr, 2, "(No runtime statistics possible; please wait for encoding to finish...)\n");
+ FLAC__ASSERT(0 == encoder_session.until);
+ }
+ else {
+ encoder_session.total_samples_to_encode= total_samples_in_input - encoder_session.skip;
+ }
+ if(encoder_session.until > 0) {
+ trim = total_samples_in_input - encoder_session.until;
+ FLAC__ASSERT(total_samples_in_input > 0);
+ FLAC__ASSERT(!options.common.sector_align);
+ data_bytes-= (unsigned int)trim*bytes_per_frame;
+ encoder_session.total_samples_to_encode-= trim;
+ }
+ if(options.common.sector_align) {
+ align_remainder= (unsigned int)(encoder_session.total_samples_to_encode % 588U);
+ if(options.common.is_last_file)
+ encoder_session.total_samples_to_encode+= (588U-align_remainder); /* will pad with zeroes */
+ else
+ encoder_session.total_samples_to_encode-= align_remainder; /* will stop short and carry over to next file */
+ }
+
+ /* +54 for the size of the AIFF headers; this is just an estimate for the progress indicator and doesn't need to be exact */
+ encoder_session.unencoded_size= encoder_session.total_samples_to_encode*bytes_per_frame+54;
+
+ if(!EncoderSession_init_encoder(&encoder_session, options.common, /*channel_mask=*/0, channels, bps-shift, sample_rate, options.foreign_metadata, /*flac_decoder_data=*/0))
+ return EncoderSession_finish_error(&encoder_session);
+
+ /* first do any samples in the reservoir */
+ if(options.common.sector_align && *options.common.align_reservoir_samples>0U) {
+
+ if(!EncoderSession_process(&encoder_session, (const FLAC__int32 *const *)options.common.align_reservoir, *options.common.align_reservoir_samples)) {
+ print_error_with_state(&encoder_session, "ERROR during encoding");
+ return EncoderSession_finish_error(&encoder_session);
+ }
+ }
+
+ /* decrement the data_bytes counter if we need to align the file */
+ if(options.common.sector_align) {
+ if(options.common.is_last_file)
+ *options.common.align_reservoir_samples= 0U;
+ else {
+ *options.common.align_reservoir_samples= align_remainder;
+ data_bytes-= (*options.common.align_reservoir_samples)*bytes_per_frame;
+ }
+ }
+
+ /* now do from the file */
+ while(data_bytes>0) {
+ size_t bytes_read= fread(ucbuffer_, 1U, min(data_bytes, CHUNK_OF_SAMPLES*bytes_per_frame), infile);
+
+ if(bytes_read==0U) {
+ if(ferror(infile)) {
+ flac__utils_printf(stderr, 1, "%s: ERROR during read\n", encoder_session.inbasefilename);
+ return EncoderSession_finish_error(&encoder_session);
+ }
+ else if(feof(infile)) {
+ if(options.common.ignore_chunk_sizes) {
+ flac__utils_printf(stderr, 1, "%s: INFO: hit EOF with --ignore-chunk-sizes, got %u samples\n", encoder_session.inbasefilename, (unsigned)encoder_session.samples_written);
+ }
+ else {
+ flac__utils_printf(stderr, 1, "%s: WARNING: unexpected EOF; expected %u samples, got %u samples\n", encoder_session.inbasefilename, (unsigned)encoder_session.total_samples_to_encode, (unsigned)encoder_session.samples_written);
+ if(encoder_session.treat_warnings_as_errors)
+ return EncoderSession_finish_error(&encoder_session);
+ }
+ data_bytes= 0;
+ }
+ }
+ else {
+ if(bytes_read % bytes_per_frame != 0U) {
+ flac__utils_printf(stderr, 1, "%s: ERROR: got partial sample\n", encoder_session.inbasefilename);
+ return EncoderSession_finish_error(&encoder_session);
+ }
+ else {
+ unsigned int frames= bytes_read/bytes_per_frame;
+ if(!format_input(input_, frames, is_big_endian_pcm, /*is_unsigned_samples=*/false, channels, bps, shift, channel_map))
+ return EncoderSession_finish_error(&encoder_session);
+
+ if(!EncoderSession_process(&encoder_session, (const FLAC__int32 *const *)input_, frames)) {
+ print_error_with_state(&encoder_session, "ERROR during encoding");
+ return EncoderSession_finish_error(&encoder_session);
+ }
+ else
+ data_bytes-= bytes_read;
+ }
+ }
+ }
+
+ if(trim>0) {
+ FLAC__ASSERT(!options.common.sector_align);
+ if(!fskip_ahead(infile, trim*bytes_per_frame)) {
+ flac__utils_printf(stderr, 1, "%s: ERROR during read while skipping samples\n", encoder_session.inbasefilename);
+ return EncoderSession_finish_error(&encoder_session);
+ }
+ }
+
+ /* now read unaligned samples into reservoir or pad with zeroes if necessary */
+ if(options.common.sector_align) {
+ if(options.common.is_last_file) {
+ unsigned int pad_frames= 588U-align_remainder;
+
+ if(pad_frames<588U) {
+ unsigned int i;
+
+ info_align_zero= pad_frames;
+ for(i= 0U; i<channels; ++i)
+ memset(input_[i], 0, sizeof(input_[0][0])*pad_frames);
+
+ if(!EncoderSession_process(&encoder_session, (const FLAC__int32 *const *)input_, pad_frames)) {
+ print_error_with_state(&encoder_session, "ERROR during encoding");
+ return EncoderSession_finish_error(&encoder_session);
+ }
+ }
+ }
+ else {
+ if(*options.common.align_reservoir_samples > 0) {
+ size_t bytes_read= fread(ucbuffer_, 1U, (*options.common.align_reservoir_samples)*bytes_per_frame, infile);
+
+ FLAC__ASSERT(CHUNK_OF_SAMPLES>=588U);
+ if(bytes_read==0U && ferror(infile)) {
+ flac__utils_printf(stderr, 1, "%s: ERROR during read\n", encoder_session.inbasefilename);
+ return EncoderSession_finish_error(&encoder_session);
+ }
+ else if(bytes_read != (*options.common.align_reservoir_samples) * bytes_per_frame) {
+ flac__utils_printf(stderr, 1, "%s: WARNING: unexpected EOF; read %u bytes; expected %u samples, got %u samples\n", encoder_session.inbasefilename, (unsigned int)bytes_read, (unsigned int)encoder_session.total_samples_to_encode, (unsigned int)encoder_session.samples_written);
+ if(encoder_session.treat_warnings_as_errors)
+ return EncoderSession_finish_error(&encoder_session);
+ }
+ else {
+ info_align_carry= *options.common.align_reservoir_samples;
+ if(!format_input(options.common.align_reservoir, *options.common.align_reservoir_samples, is_big_endian_pcm, /*is_unsigned_samples=*/false, channels, bps, shift, channel_map))
+ return EncoderSession_finish_error(&encoder_session);
+ }
+ }
+ }
+ }
+
+ if(pad==true) {
+ unsigned char tmp;
+
+ if(fread(&tmp, 1U, 1U, infile)<1U) {
+ flac__utils_printf(stderr, 1, "%s: ERROR during read of SSND pad byte\n", encoder_session.inbasefilename);
+ return EncoderSession_finish_error(&encoder_session);
+ }
+ }
+
+ got_ssnd_chunk= true;
+ }
+ else { /* other chunk */
+ if(!options.foreign_metadata) {
+ if(!memcmp(chunk_id, "COMM", 4))
+ flac__utils_printf(stderr, 1, "%s: WARNING: skipping extra 'COMM' chunk (use --keep-foreign-metadata to keep)\n", encoder_session.inbasefilename);
+ else if(!memcmp(chunk_id, "SSND", 4))
+ flac__utils_printf(stderr, 1, "%s: WARNING: skipping extra 'SSND' chunk (use --keep-foreign-metadata to keep)\n", encoder_session.inbasefilename);
+ else if(!options.foreign_metadata)
+ flac__utils_printf(stderr, 1, "%s: WARNING: skipping unknown chunk '%s' (use --keep-foreign-metadata to keep)\n", encoder_session.inbasefilename, chunk_id);
+ if(encoder_session.treat_warnings_as_errors)
+ return EncoderSession_finish_error(&encoder_session);
+ }
+
+ /* chunk size */
+ if(!read_big_endian_uint32(infile, &xx, false, encoder_session.inbasefilename))
+ return EncoderSession_finish_error(&encoder_session);
+ else {
+ unsigned long skip= xx+(xx & 1U);
+
+ FLAC__ASSERT(skip<=LONG_MAX);
+ if(!fskip_ahead(infile, skip)) {
+ fprintf(stderr, "%s: ERROR during read while skipping over unknown chunk\n", encoder_session.inbasefilename);
+ return EncoderSession_finish_error(&encoder_session);
+ }
+ }
+ }
+ }
+
+ if(got_ssnd_chunk==false && sample_frames!=0U) {
+ flac__utils_printf(stderr, 1, "%s: ERROR: missing SSND chunk\n", encoder_session.inbasefilename);
+ return EncoderSession_finish_error(&encoder_session);
+ }
+
+ return EncoderSession_finish_ok(&encoder_session, info_align_carry, info_align_zero, options.foreign_metadata);
+}
+
+int flac__encode_wav(FILE *infile, off_t infilesize, const char *infilename, const char *outfilename, const FLAC__byte *lookahead, unsigned lookahead_length, wav_encode_options_t options)
+{
+ EncoderSession encoder_session;
+ FLAC__bool is_unsigned_samples = false;
+ unsigned channels = 0, bps = 0, sample_rate = 0, shift = 0;
+ size_t bytes_read;
+ size_t channel_map[FLAC__MAX_CHANNELS];
+ FLAC__uint16 x, format; /* format is the wFormatTag word from the 'fmt ' chunk */
+ FLAC__uint32 xx, channel_mask = 0;
+ FLAC__bool got_fmt_chunk = false, got_data_chunk = false;
+ unsigned align_remainder = 0;
+ int info_align_carry = -1, info_align_zero = -1;
+
+ (void)infilesize;
+ (void)lookahead;
+ (void)lookahead_length;
+
+ if(!
+ EncoderSession_construct(
+ &encoder_session,
+#if FLAC__HAS_OGG
+ options.common.use_ogg,
+#else
+ /*use_ogg=*/false,
+#endif
+ options.common.verify,
+ options.common.treat_warnings_as_errors,
+ options.common.continue_through_decode_errors,
+ infile,
+ infilename,
+ outfilename
+ )
+ )
+ return 1;
+
+ /* initialize default channel map that preserves channel order */
+ {
+ size_t i;
+ for(i = 0; i < sizeof(channel_map)/sizeof(channel_map[0]); i++)
+ channel_map[i] = i;
+ }
+
+ if(options.foreign_metadata) {
+ const char *error;
+ if(!flac__foreign_metadata_read_from_wave(options.foreign_metadata, infilename, &error)) {
+ flac__utils_printf(stderr, 1, "%s: ERROR reading foreign metadata: %s\n", encoder_session.inbasefilename, error);
+ return EncoderSession_finish_error(&encoder_session);
+ }
+ }
+
+ /*
+ * lookahead[] already has "RIFFxxxxWAVE", do sub-chunks
+ */
+ while(!feof(infile)) {
+ if(!read_little_endian_uint32(infile, &xx, true, encoder_session.inbasefilename))
+ return EncoderSession_finish_error(&encoder_session);
+ if(feof(infile))
+ break;
+ if(xx == 0x20746d66 && !got_fmt_chunk) { /* "fmt " */
+ unsigned block_align, data_bytes;
+
+ /* see
+ * http://www-mmsp.ece.mcgill.ca/Documents/AudioFormats/WAVE/WAVE.html
+ * http://windowssdk.msdn.microsoft.com/en-us/library/ms713497.aspx
+ * http://msdn.microsoft.com/library/default.asp?url=/library/en-us/audio_r/hh/Audio_r/aud-prop_d40f094e-44f9-4baa-8a15-03e4fb369501.xml.asp
+ *
+ * WAVEFORMAT is
+ * 4 byte: subchunk size
+ * 2 byte: format type: 1 for WAVE_FORMAT_PCM, 65534 for WAVE_FORMAT_EXTENSIBLE
+ * 2 byte: # channels
+ * 4 byte: sample rate (Hz)
+ * 4 byte: avg bytes per sec
+ * 2 byte: block align
+ * 2 byte: bits per sample (not necessarily all significant)
+ * WAVEFORMATEX adds
+ * 2 byte: extension size in bytes (usually 0 for WAVEFORMATEX and 22 for WAVEFORMATEXTENSIBLE with PCM)
+ * WAVEFORMATEXTENSIBLE adds
+ * 2 byte: valid bits per sample
+ * 4 byte: channel mask
+ * 16 byte: subformat GUID, first 2 bytes have format type, 1 being PCM
+ *
+ * Current spec says WAVEFORMATEX with PCM must have bps == 8 or 16, or any multiple of 8 for WAVEFORMATEXTENSIBLE.
+ * Lots of old broken WAVEs/apps have don't follow it, e.g. 20 bps but a block align of 3/6 for mono/stereo.
+ *
+ * Block align for WAVE_FORMAT_PCM or WAVE_FORMAT_EXTENSIBLE is also supposed to be channels*bps/8
+ *
+ * If the channel mask has more set bits than # of channels, the extra MSBs are ignored.
+ * If the channel mask has less set bits than # of channels, the extra channels are unassigned to any speaker.
+ *
+ * Data is supposed to be unsigned for bps <= 8 else signed.
+ */
+
+ /* fmt sub-chunk size */
+ if(!read_little_endian_uint32(infile, &xx, false, encoder_session.inbasefilename))
+ return EncoderSession_finish_error(&encoder_session);
+ data_bytes = xx;
+ if(data_bytes < 16) {
+ flac__utils_printf(stderr, 1, "%s: ERROR: found non-standard 'fmt ' sub-chunk which has length = %u\n", encoder_session.inbasefilename, data_bytes);
+ return EncoderSession_finish_error(&encoder_session);
+ }
+ /* format code */
+ if(!read_little_endian_uint16(infile, &format, false, encoder_session.inbasefilename))
+ return EncoderSession_finish_error(&encoder_session);
+ if(format != 1 /*WAVE_FORMAT_PCM*/ && format != 65534 /*WAVE_FORMAT_EXTENSIBLE*/) {
+ flac__utils_printf(stderr, 1, "%s: ERROR: unsupported format type %u\n", encoder_session.inbasefilename, (unsigned)format);
+ return EncoderSession_finish_error(&encoder_session);
+ }
+ /* number of channels */
+ if(!read_little_endian_uint16(infile, &x, false, encoder_session.inbasefilename))
+ return EncoderSession_finish_error(&encoder_session);
+ channels = (unsigned)x;
+ if(channels == 0 || channels > FLAC__MAX_CHANNELS) {
+ flac__utils_printf(stderr, 1, "%s: ERROR: unsupported number of channels %u\n", encoder_session.inbasefilename, channels);
+ return EncoderSession_finish_error(&encoder_session);
+ }
+ else if(options.common.sector_align && channels != 2) {
+ flac__utils_printf(stderr, 1, "%s: ERROR: file has %u channels, must be 2 for --sector-align\n", encoder_session.inbasefilename, channels);
+ return EncoderSession_finish_error(&encoder_session);
+ }
+ /* sample rate */
+ if(!read_little_endian_uint32(infile, &xx, false, encoder_session.inbasefilename))
+ return EncoderSession_finish_error(&encoder_session);
+ sample_rate = xx;
+ if(!FLAC__format_sample_rate_is_valid(sample_rate)) {
+ flac__utils_printf(stderr, 1, "%s: ERROR: unsupported sample rate %u\n", encoder_session.inbasefilename, sample_rate);
+ return EncoderSession_finish_error(&encoder_session);
+ }
+ else if(options.common.sector_align && sample_rate != 44100) {
+ flac__utils_printf(stderr, 1, "%s: ERROR: file's sample rate is %u, must be 44100 for --sector-align\n", encoder_session.inbasefilename, sample_rate);
+ return EncoderSession_finish_error(&encoder_session);
+ }
+ /* avg bytes per second (ignored) */
+ if(!read_little_endian_uint32(infile, &xx, false, encoder_session.inbasefilename))
+ return EncoderSession_finish_error(&encoder_session);
+ /* block align */
+ if(!read_little_endian_uint16(infile, &x, false, encoder_session.inbasefilename))
+ return EncoderSession_finish_error(&encoder_session);
+ block_align = (unsigned)x;
+ /* bits per sample */
+ if(!read_little_endian_uint16(infile, &x, false, encoder_session.inbasefilename))
+ return EncoderSession_finish_error(&encoder_session);
+ bps = (unsigned)x;
+ is_unsigned_samples = (bps <= 8);
+ if(format == 1) {
+ if(bps != 8 && bps != 16) {
+ if(bps == 24 || bps == 32) {
+ /* let these slide with a warning since they're unambiguous */
+ flac__utils_printf(stderr, 1, "%s: WARNING: legacy WAVE file has format type %u but bits-per-sample=%u\n", encoder_session.inbasefilename, (unsigned)format, bps);
+ if(encoder_session.treat_warnings_as_errors)
+ return EncoderSession_finish_error(&encoder_session);
+ }
+ else {
+ /* @@@ we could add an option to specify left- or right-justified blocks so we knew how to set 'shift' */
+ flac__utils_printf(stderr, 1, "%s: ERROR: legacy WAVE file has format type %u but bits-per-sample=%u\n", encoder_session.inbasefilename, (unsigned)format, bps);
+ return EncoderSession_finish_error(&encoder_session);
+ }
+ }
+#if 0 /* @@@ reinstate once we can get an answer about whether the samples are left- or right-justified */
+ if((bps+7)/8 * channels == block_align) {
+ if(bps % 8) {
+ /* assume legacy file is byte aligned with some LSBs zero; this is double-checked in format_input() */
+ flac__utils_printf(stderr, 1, "%s: WARNING: legacy WAVE file (format type %d) has block alignment=%u, bits-per-sample=%u, channels=%u\n", encoder_session.inbasefilename, (unsigned)format, block_align, bps, channels);
+ if(encoder_session.treat_warnings_as_errors)
+ return EncoderSession_finish_error(&encoder_session);
+ shift = 8 - (bps % 8);
+ bps += shift;
+ }
+ else
+ shift = 0;
+ }
+ else {
+ flac__utils_printf(stderr, 1, "%s: ERROR: illegal WAVE file (format type %d) has block alignment=%u, bits-per-sample=%u, channels=%u\n", encoder_session.inbasefilename, (unsigned)format, block_align, bps, channels);
+ return EncoderSession_finish_error(&encoder_session);
+ }
+#else
+ shift = 0;
+#endif
+ if(channels > 2 && !options.common.channel_map_none) {
+ flac__utils_printf(stderr, 1, "%s: ERROR: WAVE has >2 channels but is not WAVE_FORMAT_EXTENSIBLE; cannot assign channels\n", encoder_session.inbasefilename);
+ return EncoderSession_finish_error(&encoder_session);
+ }
+ FLAC__ASSERT(data_bytes >= 16);
+ data_bytes -= 16;
+ }
+ else {
+ if(data_bytes < 40) {
+ flac__utils_printf(stderr, 1, "%s: ERROR: invalid WAVEFORMATEXTENSIBLE chunk with size %u\n", encoder_session.inbasefilename, data_bytes);
+ return EncoderSession_finish_error(&encoder_session);
+ }
+ /* cbSize */
+ if(!read_little_endian_uint16(infile, &x, false, encoder_session.inbasefilename))
+ return EncoderSession_finish_error(&encoder_session);
+ if(x < 22) {
+ flac__utils_printf(stderr, 1, "%s: ERROR: invalid WAVEFORMATEXTENSIBLE chunk with cbSize %u\n", encoder_session.inbasefilename, (unsigned)x);
+ return EncoderSession_finish_error(&encoder_session);
+ }
+ /* valid bps */
+ if(!read_little_endian_uint16(infile, &x, false, encoder_session.inbasefilename))
+ return EncoderSession_finish_error(&encoder_session);
+ if((unsigned)x > bps) {
+ flac__utils_printf(stderr, 1, "%s: ERROR: invalid WAVEFORMATEXTENSIBLE chunk with wValidBitsPerSample (%u) > wBitsPerSample (%u)\n", encoder_session.inbasefilename, (unsigned)x, bps);
+ return EncoderSession_finish_error(&encoder_session);
+ }
+ shift = bps - (unsigned)x;
+ /* channel mask */
+ if(!read_little_endian_uint32(infile, &channel_mask, false, encoder_session.inbasefilename))
+ return EncoderSession_finish_error(&encoder_session);
+ /* for mono/stereo and unassigned channels, we fake the mask */
+ if(channel_mask == 0) {
+ if(channels == 1)
+ channel_mask = 0x0001;
+ else if(channels == 2)
+ channel_mask = 0x0003;
+ }
+ /* set channel mapping */
+ /* FLAC order follows SMPTE and WAVEFORMATEXTENSIBLE but with fewer channels, which are: */
+ /* front left, front right, center, LFE, back left, back right, surround left, surround right */
+ /* the default mapping is sufficient for 1-6 channels and 7-8 are currently unspecified anyway */
+#if 0
+ /* @@@ example for dolby/vorbis order, for reference later in case it becomes important */
+ if(
+ options.common.channel_map_none ||
+ channel_mask == 0x0001 || /* 1 channel: (mono) */
+ channel_mask == 0x0003 || /* 2 channels: front left, front right */
+ channel_mask == 0x0033 || /* 4 channels: front left, front right, back left, back right */
+ channel_mask == 0x0603 /* 4 channels: front left, front right, side left, side right */
+ ) {
+ /* keep default channel order */
+ }
+ else if(
+ channel_mask == 0x0007 || /* 3 channels: front left, front right, front center */
+ channel_mask == 0x0037 || /* 5 channels: front left, front right, front center, back left, back right */
+ channel_mask == 0x0607 /* 5 channels: front left, front right, front center, side left, side right */
+ ) {
+ /* to dolby order: front left, center, front right [, surround left, surround right ] */
+ channel_map[1] = 2;
+ channel_map[2] = 1;
+ }
+ else if(
+ channel_mask == 0x003f || /* 6 channels: front left, front right, front center, LFE, back left, back right */
+ channel_mask == 0x060f /* 6 channels: front left, front right, front center, LFE, side left, side right */
+ ) {
+ /* to dolby order: front left, center, front right, surround left, surround right, LFE */
+ channel_map[1] = 2;
+ channel_map[2] = 1;
+ channel_map[3] = 5;
+ channel_map[4] = 3;
+ channel_map[5] = 4;
+ }
+#else
+ if(
+ options.common.channel_map_none ||
+ channel_mask == 0x0001 || /* 1 channel: (mono) */
+ channel_mask == 0x0003 || /* 2 channels: front left, front right */
+ channel_mask == 0x0007 || /* 3 channels: front left, front right, front center */
+ channel_mask == 0x0033 || /* 4 channels: front left, front right, back left, back right */
+ channel_mask == 0x0603 || /* 4 channels: front left, front right, side left, side right */
+ channel_mask == 0x0037 || /* 5 channels: front left, front right, front center, back left, back right */
+ channel_mask == 0x0607 || /* 5 channels: front left, front right, front center, side left, side right */
+ channel_mask == 0x003f || /* 6 channels: front left, front right, front center, LFE, back left, back right */
+ channel_mask == 0x060f /* 6 channels: front left, front right, front center, LFE, side left, side right */
+ ) {
+ /* keep default channel order */
+ }
+#endif
+ else {
+ flac__utils_printf(stderr, 1, "%s: ERROR: WAVEFORMATEXTENSIBLE chunk with unsupported channel mask=0x%04X\n", encoder_session.inbasefilename, (unsigned)channel_mask);
+ return EncoderSession_finish_error(&encoder_session);
+ }
+ if(!options.common.channel_map_none) {
+ if(count_channel_mask_bits(channel_mask) < channels) {
+ flac__utils_printf(stderr, 1, "%s: ERROR: WAVEFORMATEXTENSIBLE chunk: channel mask 0x%04X has unassigned channels (#channels=%u)\n", encoder_session.inbasefilename, (unsigned)channel_mask, channels);
+ return EncoderSession_finish_error(&encoder_session);
+ }
+#if 0
+ /* supporting this is too difficult with channel mapping; e.g. what if mask is 0x003f but #channels=4?
+ * there would be holes in the order that would have to be filled in, or the mask would have to be
+ * limited and the logic above rerun to see if it still fits into the FLAC mapping.
+ */
+ else if(count_channel_mask_bits(channel_mask) > channels)
+ channel_mask = limit_channel_mask(channel_mask, channels);
+#else
+ else if(count_channel_mask_bits(channel_mask) > channels) {
+ flac__utils_printf(stderr, 1, "%s: ERROR: WAVEFORMATEXTENSIBLE chunk: channel mask 0x%04X has extra bits for non-existant channels (#channels=%u)\n", encoder_session.inbasefilename, (unsigned)channel_mask, channels);
+ return EncoderSession_finish_error(&encoder_session);
+ }
+#endif
+ }
+ /* first part of GUID */
+ if(!read_little_endian_uint16(infile, &x, false, encoder_session.inbasefilename))
+ return EncoderSession_finish_error(&encoder_session);
+ if(x != 1) {
+ flac__utils_printf(stderr, 1, "%s: ERROR: unsupported WAVEFORMATEXTENSIBLE chunk with non-PCM format %u\n", encoder_session.inbasefilename, (unsigned)x);
+ return EncoderSession_finish_error(&encoder_session);
+ }
+ data_bytes -= 26;
+ }
+
+ if(bps-shift < 4 || bps-shift > 24) {
+ flac__utils_printf(stderr, 1, "%s: ERROR: unsupported bits-per-sample %u\n", encoder_session.inbasefilename, bps-shift);
+ return EncoderSession_finish_error(&encoder_session);
+ }
+ else if(options.common.sector_align && bps-shift != 16) {
+ flac__utils_printf(stderr, 1, "%s: ERROR: file has %u bits-per-sample, must be 16 for --sector-align\n", encoder_session.inbasefilename, bps-shift);
+ return EncoderSession_finish_error(&encoder_session);
+ }
+
+ /* skip any extra data in the fmt sub-chunk */
+ if(!fskip_ahead(infile, data_bytes)) {
+ flac__utils_printf(stderr, 1, "%s: ERROR during read while skipping over extra 'fmt' data\n", encoder_session.inbasefilename);
+ return EncoderSession_finish_error(&encoder_session);
+ }
+
+ /*
+ * now that we know the sample rate, canonicalize the
+ * --skip string to a number of samples:
+ */
+ flac__utils_canonicalize_skip_until_specification(&options.common.skip_specification, sample_rate);
+ FLAC__ASSERT(options.common.skip_specification.value.samples >= 0);
+ encoder_session.skip = (FLAC__uint64)options.common.skip_specification.value.samples;
+ FLAC__ASSERT(!options.common.sector_align || encoder_session.skip == 0);
+
+ got_fmt_chunk = true;
+ }
+ else if(xx == 0x61746164 && !got_data_chunk && got_fmt_chunk) { /* "data" */
+ FLAC__uint64 total_samples_in_input, trim = 0;
+ FLAC__bool pad = false;
+ const size_t bytes_per_wide_sample = channels * (bps >> 3);
+ unsigned data_bytes;
+
+ /* data size */
+ if(!read_little_endian_uint32(infile, &xx, false, encoder_session.inbasefilename))
+ return EncoderSession_finish_error(&encoder_session);
+ if(options.common.ignore_chunk_sizes) {
+ FLAC__ASSERT(!options.common.sector_align);
+ data_bytes = (unsigned)(-(int)bytes_per_wide_sample); /* max out data_bytes; we'll use EOF as signal to stop reading */
+ }
+ else {
+ data_bytes = xx;
+ if(0 == data_bytes) {
+ flac__utils_printf(stderr, 1, "%s: ERROR: 'data' subchunk has size of 0\n", encoder_session.inbasefilename);
+ return EncoderSession_finish_error(&encoder_session);
+ }
+ }
+ pad = (data_bytes & 1U) ? true : false;
+
+ /* *options.common.align_reservoir_samples will be 0 unless --sector-align is used */
+ FLAC__ASSERT(options.common.sector_align || *options.common.align_reservoir_samples == 0);
+ total_samples_in_input = data_bytes / bytes_per_wide_sample + *options.common.align_reservoir_samples;
+
+ /*
+ * now that we know the input size, canonicalize the
+ * --until string to an absolute sample number:
+ */
+ if(!canonicalize_until_specification(&options.common.until_specification, encoder_session.inbasefilename, sample_rate, encoder_session.skip, total_samples_in_input))
+ return EncoderSession_finish_error(&encoder_session);
+ encoder_session.until = (FLAC__uint64)options.common.until_specification.value.samples;
+ FLAC__ASSERT(!options.common.sector_align || encoder_session.until == 0);
+
+ if(encoder_session.skip > 0) {
+ if(!fskip_ahead(infile, encoder_session.skip * bytes_per_wide_sample)) {
+ flac__utils_printf(stderr, 1, "%s: ERROR during read while skipping samples\n", encoder_session.inbasefilename);
+ return EncoderSession_finish_error(&encoder_session);
+ }
+ }
+
+ data_bytes -= (unsigned)encoder_session.skip * bytes_per_wide_sample; /*@@@ WATCHOUT: 4GB limit */
+ if(options.common.ignore_chunk_sizes) {
+ encoder_session.total_samples_to_encode = 0;
+ flac__utils_printf(stderr, 2, "(No runtime statistics possible; please wait for encoding to finish...)\n");
+ FLAC__ASSERT(0 == encoder_session.until);
+ }
+ else {
+ encoder_session.total_samples_to_encode = total_samples_in_input - encoder_session.skip;
+ }
+ if(encoder_session.until > 0) {
+ trim = total_samples_in_input - encoder_session.until;
+ FLAC__ASSERT(total_samples_in_input > 0);
+ FLAC__ASSERT(!options.common.sector_align);
+ data_bytes -= (unsigned int)trim * bytes_per_wide_sample;
+ encoder_session.total_samples_to_encode -= trim;
+ }
+ if(options.common.sector_align) {
+ align_remainder = (unsigned)(encoder_session.total_samples_to_encode % 588);
+ if(options.common.is_last_file)
+ encoder_session.total_samples_to_encode += (588-align_remainder); /* will pad with zeroes */
+ else
+ encoder_session.total_samples_to_encode -= align_remainder; /* will stop short and carry over to next file */
+ }
+
+ /* +44 for the size of the WAV headers; this is just an estimate for the progress indicator and doesn't need to be exact */
+ encoder_session.unencoded_size = encoder_session.total_samples_to_encode * bytes_per_wide_sample + 44;
+
+ if(!EncoderSession_init_encoder(&encoder_session, options.common, channel_mask, channels, bps-shift, sample_rate, options.foreign_metadata, /*flac_decoder_data=*/0))
+ return EncoderSession_finish_error(&encoder_session);
+
+ /*
+ * first do any samples in the reservoir
+ */
+ if(options.common.sector_align && *options.common.align_reservoir_samples > 0) {
+ if(!EncoderSession_process(&encoder_session, (const FLAC__int32 * const *)options.common.align_reservoir, *options.common.align_reservoir_samples)) {
+ print_error_with_state(&encoder_session, "ERROR during encoding");
+ return EncoderSession_finish_error(&encoder_session);
+ }
+ }
+
+ /*
+ * decrement the data_bytes counter if we need to align the file
+ */
+ if(options.common.sector_align) {
+ if(options.common.is_last_file) {
+ *options.common.align_reservoir_samples = 0;
+ }
+ else {
+ *options.common.align_reservoir_samples = align_remainder;
+ data_bytes -= (*options.common.align_reservoir_samples) * bytes_per_wide_sample;
+ }
+ }
+
+ /*
+ * now do from the file
+ */
+ while(data_bytes > 0) {
+ bytes_read = fread(ucbuffer_, sizeof(unsigned char), min(data_bytes, CHUNK_OF_SAMPLES * bytes_per_wide_sample), infile);
+ if(bytes_read == 0) {
+ if(ferror(infile)) {
+ flac__utils_printf(stderr, 1, "%s: ERROR during read\n", encoder_session.inbasefilename);
+ return EncoderSession_finish_error(&encoder_session);
+ }
+ else if(feof(infile)) {
+ if(options.common.ignore_chunk_sizes) {
+ flac__utils_printf(stderr, 1, "%s: INFO: hit EOF with --ignore-chunk-sizes, got %u samples\n", encoder_session.inbasefilename, (unsigned)encoder_session.samples_written);
+ }
+ else {
+ flac__utils_printf(stderr, 1, "%s: WARNING: unexpected EOF; expected %u samples, got %u samples\n", encoder_session.inbasefilename, (unsigned)encoder_session.total_samples_to_encode, (unsigned)encoder_session.samples_written);
+ if(encoder_session.treat_warnings_as_errors)
+ return EncoderSession_finish_error(&encoder_session);
+ }
+ data_bytes = 0;
+ }
+ }
+ else {
+ if(bytes_read % bytes_per_wide_sample != 0) {
+ flac__utils_printf(stderr, 1, "%s: ERROR: got partial sample\n", encoder_session.inbasefilename);
+ return EncoderSession_finish_error(&encoder_session);
+ }
+ else {
+ unsigned wide_samples = bytes_read / bytes_per_wide_sample;
+ if(!format_input(input_, wide_samples, /*is_big_endian=*/false, is_unsigned_samples, channels, bps, shift, channel_map))
+ return EncoderSession_finish_error(&encoder_session);
+
+ if(!EncoderSession_process(&encoder_session, (const FLAC__int32 * const *)input_, wide_samples)) {
+ print_error_with_state(&encoder_session, "ERROR during encoding");
+ return EncoderSession_finish_error(&encoder_session);
+ }
+ data_bytes -= bytes_read;
+ }
+ }
+ }
+
+ if(trim > 0) {
+ FLAC__ASSERT(!options.common.sector_align);
+ if(!fskip_ahead(infile, trim * bytes_per_wide_sample)) {
+ flac__utils_printf(stderr, 1, "%s: ERROR during read while skipping samples\n", encoder_session.inbasefilename);
+ return EncoderSession_finish_error(&encoder_session);
+ }
+ }
+
+ /*
+ * now read unaligned samples into reservoir or pad with zeroes if necessary
+ */
+ if(options.common.sector_align) {
+ if(options.common.is_last_file) {
+ unsigned wide_samples = 588 - align_remainder;
+ if(wide_samples < 588) {
+ unsigned channel;
+
+ info_align_zero = wide_samples;
+ for(channel = 0; channel < channels; channel++)
+ memset(input_[channel], 0, sizeof(input_[0][0]) * wide_samples);
+
+ if(!EncoderSession_process(&encoder_session, (const FLAC__int32 * const *)input_, wide_samples)) {
+ print_error_with_state(&encoder_session, "ERROR during encoding");
+ return EncoderSession_finish_error(&encoder_session);
+ }
+ }
+ }
+ else {
+ if(*options.common.align_reservoir_samples > 0) {
+ FLAC__ASSERT(CHUNK_OF_SAMPLES >= 588);
+ bytes_read = fread(ucbuffer_, sizeof(unsigned char), (*options.common.align_reservoir_samples) * bytes_per_wide_sample, infile);
+ if(bytes_read == 0 && ferror(infile)) {
+ flac__utils_printf(stderr, 1, "%s: ERROR during read\n", encoder_session.inbasefilename);
+ return EncoderSession_finish_error(&encoder_session);
+ }
+ else if(bytes_read != (*options.common.align_reservoir_samples) * bytes_per_wide_sample) {
+ flac__utils_printf(stderr, 1, "%s: WARNING: unexpected EOF; read %u bytes; expected %u samples, got %u samples\n", encoder_session.inbasefilename, (unsigned)bytes_read, (unsigned)encoder_session.total_samples_to_encode, (unsigned)encoder_session.samples_written);
+ if(encoder_session.treat_warnings_as_errors)
+ return EncoderSession_finish_error(&encoder_session);
+ }
+ else {
+ info_align_carry = *options.common.align_reservoir_samples;
+ if(!format_input(options.common.align_reservoir, *options.common.align_reservoir_samples, /*is_big_endian=*/false, is_unsigned_samples, channels, bps, shift, channel_map))
+ return EncoderSession_finish_error(&encoder_session);
+ }
+ }
+ }
+ }
+
+ if(pad == true) {
+ unsigned char tmp;
+
+ if(fread(&tmp, 1U, 1U, infile) < 1U) {
+ flac__utils_printf(stderr, 1, "%s: ERROR during read of data pad byte\n", encoder_session.inbasefilename);
+ return EncoderSession_finish_error(&encoder_session);
+ }
+ }
+
+ got_data_chunk = true;
+ }
+ else {
+ if(xx == 0x61746164 && !got_fmt_chunk) { /* "data" */
+ flac__utils_printf(stderr, 1, "%s: ERROR: got 'data' sub-chunk before 'fmt' sub-chunk\n", encoder_session.inbasefilename);
+ return EncoderSession_finish_error(&encoder_session);
+ }
+
+ if(!options.foreign_metadata) {
+ if(xx == 0x20746d66 && got_fmt_chunk) /* "fmt " */
+ flac__utils_printf(stderr, 1, "%s: WARNING: skipping extra 'fmt ' sub-chunk (use --keep-foreign-metadata to keep)\n", encoder_session.inbasefilename);
+ else if(xx == 0x61746164) /* "data" */
+ flac__utils_printf(stderr, 1, "%s: WARNING: skipping extra 'data' sub-chunk (use --keep-foreign-metadata to keep)\n", encoder_session.inbasefilename);
+ else
+ flac__utils_printf(stderr, 1, "%s: WARNING: skipping unknown sub-chunk '%c%c%c%c' (use --keep-foreign-metadata to keep)\n", encoder_session.inbasefilename, (char)(xx&255), (char)((xx>>8)&255), (char)((xx>>16)&255), (char)(xx>>24));
+ if(encoder_session.treat_warnings_as_errors)
+ return EncoderSession_finish_error(&encoder_session);
+ }
+
+ /* sub-chunk size */
+ if(!read_little_endian_uint32(infile, &xx, false, encoder_session.inbasefilename))
+ return EncoderSession_finish_error(&encoder_session);
+ else {
+ unsigned long skip = xx+(xx & 1U);
+
+ FLAC__ASSERT(skip<=LONG_MAX);
+ if(!fskip_ahead(infile, skip)) {
+ flac__utils_printf(stderr, 1, "%s: ERROR during read while skipping over unsupported sub-chunk\n", encoder_session.inbasefilename);
+ return EncoderSession_finish_error(&encoder_session);
+ }
+ }
+ }
+ }
+
+ return EncoderSession_finish_ok(&encoder_session, info_align_carry, info_align_zero, options.foreign_metadata);
+}
+
+int flac__encode_raw(FILE *infile, off_t infilesize, const char *infilename, const char *outfilename, const FLAC__byte *lookahead, unsigned lookahead_length, raw_encode_options_t options)
+{
+ EncoderSession encoder_session;
+ size_t bytes_read;
+ const size_t bytes_per_wide_sample = options.channels * (options.bps >> 3);
+ unsigned align_remainder = 0;
+ int info_align_carry = -1, info_align_zero = -1;
+ FLAC__uint64 total_samples_in_input = 0;
+
+ FLAC__ASSERT(!options.common.sector_align || options.channels == 2);
+ FLAC__ASSERT(!options.common.sector_align || options.bps == 16);
+ FLAC__ASSERT(!options.common.sector_align || options.sample_rate == 44100);
+ FLAC__ASSERT(!options.common.sector_align || infilesize >= 0);
+ FLAC__ASSERT(!options.common.replay_gain || options.channels <= 2);
+ FLAC__ASSERT(!options.common.replay_gain || grabbag__replaygain_is_valid_sample_frequency(options.sample_rate));
+
+ if(!
+ EncoderSession_construct(
+ &encoder_session,
+#if FLAC__HAS_OGG
+ options.common.use_ogg,
+#else
+ /*use_ogg=*/false,
+#endif
+ options.common.verify,
+ options.common.treat_warnings_as_errors,
+ options.common.continue_through_decode_errors,
+ infile,
+ infilename,
+ outfilename
+ )
+ )
+ return 1;
+
+ /*
+ * now that we know the sample rate, canonicalize the
+ * --skip string to a number of samples:
+ */
+ flac__utils_canonicalize_skip_until_specification(&options.common.skip_specification, options.sample_rate);
+ FLAC__ASSERT(options.common.skip_specification.value.samples >= 0);
+ encoder_session.skip = (FLAC__uint64)options.common.skip_specification.value.samples;
+ FLAC__ASSERT(!options.common.sector_align || encoder_session.skip == 0);
+
+ if(infilesize < 0)
+ total_samples_in_input = 0;
+ else {
+ /* *options.common.align_reservoir_samples will be 0 unless --sector-align is used */
+ FLAC__ASSERT(options.common.sector_align || *options.common.align_reservoir_samples == 0);
+ total_samples_in_input = (FLAC__uint64)infilesize / bytes_per_wide_sample + *options.common.align_reservoir_samples;
+ }
+
+ /*
+ * now that we know the input size, canonicalize the
+ * --until strings to a number of samples:
+ */
+ if(!canonicalize_until_specification(&options.common.until_specification, encoder_session.inbasefilename, options.sample_rate, encoder_session.skip, total_samples_in_input))
+ return EncoderSession_finish_error(&encoder_session);
+ encoder_session.until = (FLAC__uint64)options.common.until_specification.value.samples;
+ FLAC__ASSERT(!options.common.sector_align || encoder_session.until == 0);
+
+ infilesize -= (off_t)encoder_session.skip * bytes_per_wide_sample;
+ encoder_session.total_samples_to_encode = total_samples_in_input - encoder_session.skip;
+ if(encoder_session.until > 0) {
+ const FLAC__uint64 trim = total_samples_in_input - encoder_session.until;
+ FLAC__ASSERT(total_samples_in_input > 0);
+ FLAC__ASSERT(!options.common.sector_align);
+ infilesize -= (off_t)trim * bytes_per_wide_sample;
+ encoder_session.total_samples_to_encode -= trim;
+ }
+ if(infilesize >= 0 && options.common.sector_align) {
+ FLAC__ASSERT(encoder_session.skip == 0);
+ align_remainder = (unsigned)(encoder_session.total_samples_to_encode % 588);
+ if(options.common.is_last_file)
+ encoder_session.total_samples_to_encode += (588-align_remainder); /* will pad with zeroes */
+ else
+ encoder_session.total_samples_to_encode -= align_remainder; /* will stop short and carry over to next file */
+ }
+ encoder_session.unencoded_size = encoder_session.total_samples_to_encode * bytes_per_wide_sample;
+
+ if(encoder_session.total_samples_to_encode <= 0)
+ flac__utils_printf(stderr, 2, "(No runtime statistics possible; please wait for encoding to finish...)\n");
+
+ if(encoder_session.skip > 0) {
+ unsigned skip_bytes = bytes_per_wide_sample * (unsigned)encoder_session.skip;
+ if(skip_bytes > lookahead_length) {
+ skip_bytes -= lookahead_length;
+ lookahead_length = 0;
+ if(!fskip_ahead(infile, skip_bytes)) {
+ flac__utils_printf(stderr, 1, "%s: ERROR during read while skipping samples\n", encoder_session.inbasefilename);
+ return EncoderSession_finish_error(&encoder_session);
+ }
+ }
+ else {
+ lookahead += skip_bytes;
+ lookahead_length -= skip_bytes;
+ }
+ }
+
+ if(!EncoderSession_init_encoder(&encoder_session, options.common, /*channel_mask=*/0, options.channels, options.bps, options.sample_rate, /*foreign_metadata=*/0, /*flac_decoder_data=*/0))
+ return EncoderSession_finish_error(&encoder_session);
+
+ /*
+ * first do any samples in the reservoir
+ */
+ if(options.common.sector_align && *options.common.align_reservoir_samples > 0) {
+ if(!EncoderSession_process(&encoder_session, (const FLAC__int32 * const *)options.common.align_reservoir, *options.common.align_reservoir_samples)) {
+ print_error_with_state(&encoder_session, "ERROR during encoding");
+ return EncoderSession_finish_error(&encoder_session);
+ }
+ }
+
+ /*
+ * decrement infilesize if we need to align the file
+ */
+ if(options.common.sector_align) {
+ FLAC__ASSERT(infilesize >= 0);
+ if(options.common.is_last_file) {
+ *options.common.align_reservoir_samples = 0;
+ }
+ else {
+ *options.common.align_reservoir_samples = align_remainder;
+ infilesize -= (off_t)((*options.common.align_reservoir_samples) * bytes_per_wide_sample);
+ FLAC__ASSERT(infilesize >= 0);
+ }
+ }
+
+ /*
+ * now do from the file
+ */
+ if(infilesize < 0) {
+ while(!feof(infile)) {
+ if(lookahead_length > 0) {
+ FLAC__ASSERT(lookahead_length < CHUNK_OF_SAMPLES * bytes_per_wide_sample);
+ memcpy(ucbuffer_, lookahead, lookahead_length);
+ bytes_read = fread(ucbuffer_+lookahead_length, sizeof(unsigned char), CHUNK_OF_SAMPLES * bytes_per_wide_sample - lookahead_length, infile) + lookahead_length;
+ if(ferror(infile)) {
+ flac__utils_printf(stderr, 1, "%s: ERROR during read\n", encoder_session.inbasefilename);
+ return EncoderSession_finish_error(&encoder_session);
+ }
+ lookahead_length = 0;
+ }
+ else
+ bytes_read = fread(ucbuffer_, sizeof(unsigned char), CHUNK_OF_SAMPLES * bytes_per_wide_sample, infile);
+
+ if(bytes_read == 0) {
+ if(ferror(infile)) {
+ flac__utils_printf(stderr, 1, "%s: ERROR during read\n", encoder_session.inbasefilename);
+ return EncoderSession_finish_error(&encoder_session);
+ }
+ }
+ else if(bytes_read % bytes_per_wide_sample != 0) {
+ flac__utils_printf(stderr, 1, "%s: ERROR: got partial sample\n", encoder_session.inbasefilename);
+ return EncoderSession_finish_error(&encoder_session);
+ }
+ else {
+ unsigned wide_samples = bytes_read / bytes_per_wide_sample;
+ if(!format_input(input_, wide_samples, options.is_big_endian, options.is_unsigned_samples, options.channels, options.bps, /*shift=*/0, /*channel_map=*/0))
+ return EncoderSession_finish_error(&encoder_session);
+
+ if(!EncoderSession_process(&encoder_session, (const FLAC__int32 * const *)input_, wide_samples)) {
+ print_error_with_state(&encoder_session, "ERROR during encoding");
+ return EncoderSession_finish_error(&encoder_session);
+ }
+ }
+ }
+ }
+ else {
+ const FLAC__uint64 max_input_bytes = infilesize;
+ FLAC__uint64 total_input_bytes_read = 0;
+ while(total_input_bytes_read < max_input_bytes) {
+ {
+ size_t wanted = (CHUNK_OF_SAMPLES * bytes_per_wide_sample);
+ wanted = (size_t) min((FLAC__uint64)wanted, max_input_bytes - total_input_bytes_read);
+
+ if(lookahead_length > 0) {
+ FLAC__ASSERT(lookahead_length <= wanted);
+ memcpy(ucbuffer_, lookahead, lookahead_length);
+ wanted -= lookahead_length;
+ bytes_read = lookahead_length;
+ if(wanted > 0) {
+ bytes_read += fread(ucbuffer_+lookahead_length, sizeof(unsigned char), wanted, infile);
+ if(ferror(infile)) {
+ flac__utils_printf(stderr, 1, "%s: ERROR during read\n", encoder_session.inbasefilename);
+ return EncoderSession_finish_error(&encoder_session);
+ }
+ }
+ lookahead_length = 0;
+ }
+ else
+ bytes_read = fread(ucbuffer_, sizeof(unsigned char), wanted, infile);
+ }
+
+ if(bytes_read == 0) {
+ if(ferror(infile)) {
+ flac__utils_printf(stderr, 1, "%s: ERROR during read\n", encoder_session.inbasefilename);
+ return EncoderSession_finish_error(&encoder_session);
+ }
+ else if(feof(infile)) {
+ flac__utils_printf(stderr, 1, "%s: WARNING: unexpected EOF; expected %u samples, got %u samples\n", encoder_session.inbasefilename, (unsigned)encoder_session.total_samples_to_encode, (unsigned)encoder_session.samples_written);
+ if(encoder_session.treat_warnings_as_errors)
+ return EncoderSession_finish_error(&encoder_session);
+ total_input_bytes_read = max_input_bytes;
+ }
+ }
+ else {
+ if(bytes_read % bytes_per_wide_sample != 0) {
+ flac__utils_printf(stderr, 1, "%s: ERROR: got partial sample\n", encoder_session.inbasefilename);
+ return EncoderSession_finish_error(&encoder_session);
+ }
+ else {
+ unsigned wide_samples = bytes_read / bytes_per_wide_sample;
+ if(!format_input(input_, wide_samples, options.is_big_endian, options.is_unsigned_samples, options.channels, options.bps, /*shift=*/0, /*channel_map=*/0))
+ return EncoderSession_finish_error(&encoder_session);
+
+ if(!EncoderSession_process(&encoder_session, (const FLAC__int32 * const *)input_, wide_samples)) {
+ print_error_with_state(&encoder_session, "ERROR during encoding");
+ return EncoderSession_finish_error(&encoder_session);
+ }
+ total_input_bytes_read += bytes_read;
+ }
+ }
+ }
+ }
+
+ /*
+ * now read unaligned samples into reservoir or pad with zeroes if necessary
+ */
+ if(options.common.sector_align) {
+ if(options.common.is_last_file) {
+ unsigned wide_samples = 588 - align_remainder;
+ if(wide_samples < 588) {
+ unsigned channel;
+
+ info_align_zero = wide_samples;
+ for(channel = 0; channel < options.channels; channel++)
+ memset(input_[channel], 0, sizeof(input_[0][0]) * wide_samples);
+
+ if(!EncoderSession_process(&encoder_session, (const FLAC__int32 * const *)input_, wide_samples)) {
+ print_error_with_state(&encoder_session, "ERROR during encoding");
+ return EncoderSession_finish_error(&encoder_session);
+ }
+ }
+ }
+ else {
+ if(*options.common.align_reservoir_samples > 0) {
+ FLAC__ASSERT(CHUNK_OF_SAMPLES >= 588);
+ bytes_read = fread(ucbuffer_, sizeof(unsigned char), (*options.common.align_reservoir_samples) * bytes_per_wide_sample, infile);
+ if(bytes_read == 0 && ferror(infile)) {
+ flac__utils_printf(stderr, 1, "%s: ERROR during read\n", encoder_session.inbasefilename);
+ return EncoderSession_finish_error(&encoder_session);
+ }
+ else if(bytes_read != (*options.common.align_reservoir_samples) * bytes_per_wide_sample) {
+ flac__utils_printf(stderr, 1, "%s: WARNING: unexpected EOF; read %u bytes; expected %u samples, got %u samples\n", encoder_session.inbasefilename, (unsigned)bytes_read, (unsigned)encoder_session.total_samples_to_encode, (unsigned)encoder_session.samples_written);
+ if(encoder_session.treat_warnings_as_errors)
+ return EncoderSession_finish_error(&encoder_session);
+ }
+ else {
+ info_align_carry = *options.common.align_reservoir_samples;
+ if(!format_input(options.common.align_reservoir, *options.common.align_reservoir_samples, options.is_big_endian, options.is_unsigned_samples, options.channels, options.bps, /*shift=*/0, /*channel_map=*/0))
+ return EncoderSession_finish_error(&encoder_session);
+ }
+ }
+ }
+ }
+
+ return EncoderSession_finish_ok(&encoder_session, info_align_carry, info_align_zero, /*foreign_metadata=*/0);
+}
+
+int flac__encode_flac(FILE *infile, off_t infilesize, const char *infilename, const char *outfilename, const FLAC__byte *lookahead, unsigned lookahead_length, flac_encode_options_t options, FLAC__bool input_is_ogg)
+{
+ EncoderSession encoder_session;
+ FLAC__StreamDecoder *decoder = 0;
+ FLACDecoderData decoder_data;
+ size_t i;
+ int retval;
+
+ if(!
+ EncoderSession_construct(
+ &encoder_session,
+#if FLAC__HAS_OGG
+ options.common.use_ogg,
+#else
+ /*use_ogg=*/false,
+#endif
+ options.common.verify,
+ options.common.treat_warnings_as_errors,
+ options.common.continue_through_decode_errors,
+ infile,
+ infilename,
+ outfilename
+ )
+ )
+ return 1;
+
+ decoder_data.encoder_session = &encoder_session;
+ decoder_data.filesize = (infilesize == (off_t)(-1)? 0 : infilesize);
+ decoder_data.lookahead = lookahead;
+ decoder_data.lookahead_length = lookahead_length;
+ decoder_data.num_metadata_blocks = 0;
+ decoder_data.samples_left_to_process = 0;
+ decoder_data.fatal_error = false;
+
+ /*
+ * set up FLAC decoder for the input
+ */
+ if (0 == (decoder = FLAC__stream_decoder_new())) {
+ flac__utils_printf(stderr, 1, "%s: ERROR: creating decoder for FLAC input\n", encoder_session.inbasefilename);
+ return EncoderSession_finish_error(&encoder_session);
+ }
+ if (!(
+ FLAC__stream_decoder_set_md5_checking(decoder, false) &&
+ FLAC__stream_decoder_set_metadata_respond_all(decoder)
+ )) {
+ flac__utils_printf(stderr, 1, "%s: ERROR: setting up decoder for FLAC input\n", encoder_session.inbasefilename);
+ goto fubar1; /*@@@ yuck */
+ }
+
+ if (input_is_ogg) {
+ if (FLAC__stream_decoder_init_ogg_stream(decoder, flac_decoder_read_callback, flac_decoder_seek_callback, flac_decoder_tell_callback, flac_decoder_length_callback, flac_decoder_eof_callback, flac_decoder_write_callback, flac_decoder_metadata_callback, flac_decoder_error_callback, /*client_data=*/&decoder_data) != FLAC__STREAM_DECODER_INIT_STATUS_OK) {
+ flac__utils_printf(stderr, 1, "%s: ERROR: initializing decoder for Ogg FLAC input, state = %s\n", encoder_session.inbasefilename, FLAC__stream_decoder_get_resolved_state_string(decoder));
+ goto fubar1; /*@@@ yuck */
+ }
+ }
+ else if (FLAC__stream_decoder_init_stream(decoder, flac_decoder_read_callback, flac_decoder_seek_callback, flac_decoder_tell_callback, flac_decoder_length_callback, flac_decoder_eof_callback, flac_decoder_write_callback, flac_decoder_metadata_callback, flac_decoder_error_callback, /*client_data=*/&decoder_data) != FLAC__STREAM_DECODER_INIT_STATUS_OK) {
+ flac__utils_printf(stderr, 1, "%s: ERROR: initializing decoder for FLAC input, state = %s\n", encoder_session.inbasefilename, FLAC__stream_decoder_get_resolved_state_string(decoder));
+ goto fubar1; /*@@@ yuck */
+ }
+
+ if (!FLAC__stream_decoder_process_until_end_of_metadata(decoder) || decoder_data.fatal_error) {
+ if (decoder_data.fatal_error)
+ flac__utils_printf(stderr, 1, "%s: ERROR: out of memory or too many metadata blocks while reading metadata in FLAC input\n", encoder_session.inbasefilename);
+ else
+ flac__utils_printf(stderr, 1, "%s: ERROR: reading metadata in FLAC input, state = %s\n", encoder_session.inbasefilename, FLAC__stream_decoder_get_resolved_state_string(decoder));
+ goto fubar1; /*@@@ yuck */
+ }
+
+ if (decoder_data.num_metadata_blocks == 0) {
+ flac__utils_printf(stderr, 1, "%s: ERROR: reading metadata in FLAC input, got no metadata blocks\n", encoder_session.inbasefilename);
+ goto fubar2; /*@@@ yuck */
+ }
+ else if (decoder_data.metadata_blocks[0]->type != FLAC__METADATA_TYPE_STREAMINFO) {
+ flac__utils_printf(stderr, 1, "%s: ERROR: reading metadata in FLAC input, first metadata block is not STREAMINFO\n", encoder_session.inbasefilename);
+ goto fubar2; /*@@@ yuck */
+ }
+ else if (decoder_data.metadata_blocks[0]->data.stream_info.total_samples == 0) {
+ flac__utils_printf(stderr, 1, "%s: ERROR: FLAC input has STREAMINFO with unknown total samples which is not supported\n", encoder_session.inbasefilename);
+ goto fubar2; /*@@@ yuck */
+ }
+
+ /*
+ * now that we have the STREAMINFO and know the sample rate,
+ * canonicalize the --skip string to a number of samples:
+ */
+ flac__utils_canonicalize_skip_until_specification(&options.common.skip_specification, decoder_data.metadata_blocks[0]->data.stream_info.sample_rate);
+ FLAC__ASSERT(options.common.skip_specification.value.samples >= 0);
+ encoder_session.skip = (FLAC__uint64)options.common.skip_specification.value.samples;
+ FLAC__ASSERT(!options.common.sector_align); /* --sector-align with FLAC input is not supported */
+
+ {
+ FLAC__uint64 total_samples_in_input, trim = 0;
+
+ total_samples_in_input = decoder_data.metadata_blocks[0]->data.stream_info.total_samples;
+
+ /*
+ * now that we know the input size, canonicalize the
+ * --until string to an absolute sample number:
+ */
+ if(!canonicalize_until_specification(&options.common.until_specification, encoder_session.inbasefilename, decoder_data.metadata_blocks[0]->data.stream_info.sample_rate, encoder_session.skip, total_samples_in_input))
+ goto fubar2; /*@@@ yuck */
+ encoder_session.until = (FLAC__uint64)options.common.until_specification.value.samples;
+
+ encoder_session.total_samples_to_encode = total_samples_in_input - encoder_session.skip;
+ if(encoder_session.until > 0) {
+ trim = total_samples_in_input - encoder_session.until;
+ FLAC__ASSERT(total_samples_in_input > 0);
+ encoder_session.total_samples_to_encode -= trim;
+ }
+
+ encoder_session.unencoded_size = decoder_data.filesize;
+
+ /* (channel mask will get copied over from the source VORBIS_COMMENT if it exists) */
+ if(!EncoderSession_init_encoder(&encoder_session, options.common, /*channel_mask=*/0, decoder_data.metadata_blocks[0]->data.stream_info.channels, decoder_data.metadata_blocks[0]->data.stream_info.bits_per_sample, decoder_data.metadata_blocks[0]->data.stream_info.sample_rate, /*foreign_metadata=*/0, &decoder_data))
+ goto fubar2; /*@@@ yuck */
+
+ /*
+ * have to wait until the FLAC encoder is set up for writing
+ * before any seeking in the input FLAC file, because the seek
+ * itself will usually call the decoder's write callback, and
+ * our decoder's write callback passes samples to our FLAC
+ * encoder
+ */
+ decoder_data.samples_left_to_process = encoder_session.total_samples_to_encode;
+ if(encoder_session.skip > 0) {
+ if(!FLAC__stream_decoder_seek_absolute(decoder, encoder_session.skip)) {
+ flac__utils_printf(stderr, 1, "%s: ERROR while skipping samples, FLAC decoder state = %s\n", encoder_session.inbasefilename, FLAC__stream_decoder_get_resolved_state_string(decoder));
+ goto fubar2; /*@@@ yuck */
+ }
+ }
+
+ /*
+ * now do samples from the file
+ */
+ while(!decoder_data.fatal_error && decoder_data.samples_left_to_process > 0) {
+ /* We can also hit the end of stream without samples_left_to_process
+ * going to 0 if there are errors and continue_through_decode_errors
+ * is on, so we want to break in that case too:
+ */
+ if(encoder_session.continue_through_decode_errors && FLAC__stream_decoder_get_state(decoder) == FLAC__STREAM_DECODER_END_OF_STREAM)
+ break;
+ if(!FLAC__stream_decoder_process_single(decoder)) {
+ flac__utils_printf(stderr, 1, "%s: ERROR: while decoding FLAC input, state = %s\n", encoder_session.inbasefilename, FLAC__stream_decoder_get_resolved_state_string(decoder));
+ goto fubar2; /*@@@ yuck */
+ }
+ }
+ if(decoder_data.fatal_error) {
+ flac__utils_printf(stderr, 1, "%s: ERROR: while decoding FLAC input, state = %s\n", encoder_session.inbasefilename, FLAC__stream_decoder_get_resolved_state_string(decoder));
+ goto fubar2; /*@@@ yuck */
+ }
+ }
+
+ FLAC__stream_decoder_delete(decoder);
+ retval = EncoderSession_finish_ok(&encoder_session, -1, -1, /*foreign_metadata=*/0);
+ /* have to wail until encoder is completely finished before deleting because of the final step of writing the seekpoint offsets */
+ for(i = 0; i < decoder_data.num_metadata_blocks; i++)
+ FLAC__metadata_object_delete(decoder_data.metadata_blocks[i]);
+ return retval;
+
+fubar2:
+ for(i = 0; i < decoder_data.num_metadata_blocks; i++)
+ FLAC__metadata_object_delete(decoder_data.metadata_blocks[i]);
+fubar1:
+ FLAC__stream_decoder_delete(decoder);
+ return EncoderSession_finish_error(&encoder_session);
+}
+
+FLAC__bool EncoderSession_construct(EncoderSession *e, FLAC__bool use_ogg, FLAC__bool verify, FLAC__bool treat_warnings_as_errors, FLAC__bool continue_through_decode_errors, FILE *infile, const char *infilename, const char *outfilename)
+{
+ unsigned i;
+ FLAC__uint32 test = 1;
+
+ /*
+ * initialize globals
+ */
+
+ is_big_endian_host_ = (*((FLAC__byte*)(&test)))? false : true;
+
+ for(i = 0; i < FLAC__MAX_CHANNELS; i++)
+ input_[i] = &(in_[i][0]);
+
+
+ /*
+ * initialize instance
+ */
+
+#if FLAC__HAS_OGG
+ e->use_ogg = use_ogg;
+#else
+ (void)use_ogg;
+#endif
+ e->verify = verify;
+ e->treat_warnings_as_errors = treat_warnings_as_errors;
+ e->continue_through_decode_errors = continue_through_decode_errors;
+
+ e->is_stdout = (0 == strcmp(outfilename, "-"));
+ e->outputfile_opened = false;
+
+ e->inbasefilename = grabbag__file_get_basename(infilename);
+ e->infilename = infilename;
+ e->outfilename = outfilename;
+
+ e->skip = 0; /* filled in later after the sample_rate is known */
+ e->unencoded_size = 0;
+ e->total_samples_to_encode = 0;
+ e->bytes_written = 0;
+ e->samples_written = 0;
+ e->stats_mask = 0;
+
+ e->encoder = 0;
+
+ e->fin = infile;
+ e->seek_table_template = 0;
+
+ if(0 == (e->seek_table_template = FLAC__metadata_object_new(FLAC__METADATA_TYPE_SEEKTABLE))) {
+ flac__utils_printf(stderr, 1, "%s: ERROR allocating memory for seek table\n", e->inbasefilename);
+ return false;
+ }
+
+ e->encoder = FLAC__stream_encoder_new();
+ if(0 == e->encoder) {
+ flac__utils_printf(stderr, 1, "%s: ERROR creating the encoder instance\n", e->inbasefilename);
+ EncoderSession_destroy(e);
+ return false;
+ }
+
+ return true;
+}
+
+void EncoderSession_destroy(EncoderSession *e)
+{
+ if(e->fin != stdin)
+ fclose(e->fin);
+
+ if(0 != e->encoder) {
+ FLAC__stream_encoder_delete(e->encoder);
+ e->encoder = 0;
+ }
+
+ if(0 != e->seek_table_template) {
+ FLAC__metadata_object_delete(e->seek_table_template);
+ e->seek_table_template = 0;
+ }
+}
+
+int EncoderSession_finish_ok(EncoderSession *e, int info_align_carry, int info_align_zero, foreign_metadata_t *foreign_metadata)
+{
+ FLAC__StreamEncoderState fse_state = FLAC__STREAM_ENCODER_OK;
+ int ret = 0;
+ FLAC__bool verify_error = false;
+
+ if(e->encoder) {
+ fse_state = FLAC__stream_encoder_get_state(e->encoder);
+ ret = FLAC__stream_encoder_finish(e->encoder)? 0 : 1;
+ verify_error =
+ fse_state == FLAC__STREAM_ENCODER_VERIFY_MISMATCH_IN_AUDIO_DATA ||
+ FLAC__stream_encoder_get_state(e->encoder) == FLAC__STREAM_ENCODER_VERIFY_MISMATCH_IN_AUDIO_DATA
+ ;
+ }
+ /* all errors except verify errors should interrupt the stats */
+ if(ret && !verify_error)
+ print_error_with_state(e, "ERROR during encoding");
+ else if(e->total_samples_to_encode > 0) {
+ print_stats(e);
+ flac__utils_printf(stderr, 2, "\n");
+ }
+
+ if(verify_error) {
+ print_verify_error(e);
+ ret = 1;
+ }
+ else {
+ if(info_align_carry >= 0) {
+ flac__utils_printf(stderr, 1, "%s: INFO: sector alignment causing %d samples to be carried over\n", e->inbasefilename, info_align_carry);
+ }
+ if(info_align_zero >= 0) {
+ flac__utils_printf(stderr, 1, "%s: INFO: sector alignment causing %d zero samples to be appended\n", e->inbasefilename, info_align_zero);
+ }
+ }
+
+ /*@@@@@@ should this go here or somewhere else? */
+ if(ret == 0 && foreign_metadata) {
+ const char *error;
+ if(!flac__foreign_metadata_write_to_flac(foreign_metadata, e->infilename, e->outfilename, &error)) {
+ flac__utils_printf(stderr, 1, "%s: ERROR: updating foreign metadata in FLAC file: %s\n", e->inbasefilename, error);
+ ret = 1;
+ }
+ }
+
+ EncoderSession_destroy(e);
+
+ return ret;
+}
+
+int EncoderSession_finish_error(EncoderSession *e)
+{
+ FLAC__ASSERT(e->encoder);
+
+ if(e->total_samples_to_encode > 0)
+ flac__utils_printf(stderr, 2, "\n");
+
+ if(FLAC__stream_encoder_get_state(e->encoder) == FLAC__STREAM_ENCODER_VERIFY_MISMATCH_IN_AUDIO_DATA)
+ print_verify_error(e);
+ else if(e->outputfile_opened)
+ /* only want to delete the file if we opened it; otherwise it could be an existing file and our overwrite failed */
+ unlink(e->outfilename);
+
+ EncoderSession_destroy(e);
+
+ return 1;
+}
+
+typedef struct {
+ unsigned num_metadata;
+ FLAC__bool *needs_delete;
+ FLAC__StreamMetadata **metadata;
+ FLAC__StreamMetadata *cuesheet; /* always needs to be deleted */
+} static_metadata_t;
+
+static void static_metadata_init(static_metadata_t *m)
+{
+ m->num_metadata = 0;
+ m->needs_delete = 0;
+ m->metadata = 0;
+ m->cuesheet = 0;
+}
+
+static void static_metadata_clear(static_metadata_t *m)
+{
+ unsigned i;
+ for(i = 0; i < m->num_metadata; i++)
+ if(m->needs_delete[i])
+ FLAC__metadata_object_delete(m->metadata[i]);
+ if(m->metadata)
+ free(m->metadata);
+ if(m->needs_delete)
+ free(m->needs_delete);
+ if(m->cuesheet)
+ FLAC__metadata_object_delete(m->cuesheet);
+ static_metadata_init(m);
+}
+
+static FLAC__bool static_metadata_append(static_metadata_t *m, FLAC__StreamMetadata *d, FLAC__bool needs_delete)
+{
+ void *x;
+ if(0 == (x = safe_realloc_muladd2_(m->metadata, sizeof(*m->metadata), /*times (*/m->num_metadata, /*+*/1/*)*/)))
+ return false;
+ m->metadata = (FLAC__StreamMetadata**)x;
+ if(0 == (x = safe_realloc_muladd2_(m->needs_delete, sizeof(*m->needs_delete), /*times (*/m->num_metadata, /*+*/1/*)*/)))
+ return false;
+ m->needs_delete = (FLAC__bool*)x;
+ m->metadata[m->num_metadata] = d;
+ m->needs_delete[m->num_metadata] = needs_delete;
+ m->num_metadata++;
+ return true;
+}
+
+FLAC__bool EncoderSession_init_encoder(EncoderSession *e, encode_options_t options, FLAC__uint32 channel_mask, unsigned channels, unsigned bps, unsigned sample_rate, const foreign_metadata_t *foreign_metadata, FLACDecoderData *flac_decoder_data)
+{
+ FLAC__StreamMetadata padding;
+ FLAC__StreamMetadata **metadata = 0;
+ static_metadata_t static_metadata;
+ unsigned num_metadata = 0, i;
+ FLAC__StreamEncoderInitStatus init_status;
+ const FLAC__bool is_cdda = (channels == 1 || channels == 2) && (bps == 16) && (sample_rate == 44100);
+ char apodizations[2000];
+
+ FLAC__ASSERT(sizeof(options.pictures)/sizeof(options.pictures[0]) <= 64);
+
+ static_metadata_init(&static_metadata);
+
+ e->replay_gain = options.replay_gain;
+ e->channels = channels;
+ e->bits_per_sample = bps;
+ e->sample_rate = sample_rate;
+
+ apodizations[0] = '\0';
+
+ if(e->replay_gain) {
+ if(channels != 1 && channels != 2) {
+ flac__utils_printf(stderr, 1, "%s: ERROR, number of channels (%u) must be 1 or 2 for --replay-gain\n", e->inbasefilename, channels);
+ return false;
+ }
+ if(!grabbag__replaygain_is_valid_sample_frequency(sample_rate)) {
+ flac__utils_printf(stderr, 1, "%s: ERROR, invalid sample rate (%u) for --replay-gain\n", e->inbasefilename, sample_rate);
+ return false;
+ }
+ if(options.is_first_file) {
+ if(!grabbag__replaygain_init(sample_rate)) {
+ flac__utils_printf(stderr, 1, "%s: ERROR initializing ReplayGain stage\n", e->inbasefilename);
+ return false;
+ }
+ }
+ }
+
+ if(!parse_cuesheet(&static_metadata.cuesheet, options.cuesheet_filename, e->inbasefilename, is_cdda, e->total_samples_to_encode, e->treat_warnings_as_errors))
+ return false;
+
+ if(!convert_to_seek_table_template(options.requested_seek_points, options.num_requested_seek_points, options.cued_seekpoints? static_metadata.cuesheet : 0, e)) {
+ flac__utils_printf(stderr, 1, "%s: ERROR allocating memory for seek table\n", e->inbasefilename);
+ static_metadata_clear(&static_metadata);
+ return false;
+ }
+
+ /* build metadata */
+ if(flac_decoder_data) {
+ /*
+ * we're encoding from FLAC so we will use the FLAC file's
+ * metadata as the basis for the encoded file
+ */
+ {
+ /*
+ * first handle pictures: simple append any --pictures
+ * specified.
+ */
+ for(i = 0; i < options.num_pictures; i++) {
+ FLAC__StreamMetadata *pic = FLAC__metadata_object_clone(options.pictures[i]);
+ if(0 == pic) {
+ flac__utils_printf(stderr, 1, "%s: ERROR allocating memory for PICTURE block\n", e->inbasefilename);
+ static_metadata_clear(&static_metadata);
+ return false;
+ }
+ flac_decoder_data->metadata_blocks[flac_decoder_data->num_metadata_blocks++] = pic;
+ }
+ }
+ {
+ /*
+ * next handle vorbis comment: if any tags were specified
+ * or there is no existing vorbis comment, we create a
+ * new vorbis comment (discarding any existing one); else
+ * we keep the existing one. also need to make sure to
+ * propagate any channel mask tag.
+ */
+ /* @@@ change to append -T values from options.vorbis_comment if input has VC already? */
+ size_t i, j;
+ FLAC__bool vc_found = false;
+ for(i = 0, j = 0; i < flac_decoder_data->num_metadata_blocks; i++) {
+ if(flac_decoder_data->metadata_blocks[i]->type == FLAC__METADATA_TYPE_VORBIS_COMMENT)
+ vc_found = true;
+ if(flac_decoder_data->metadata_blocks[i]->type == FLAC__METADATA_TYPE_VORBIS_COMMENT && options.vorbis_comment->data.vorbis_comment.num_comments > 0) {
+ (void) flac__utils_get_channel_mask_tag(flac_decoder_data->metadata_blocks[i], &channel_mask);
+ flac__utils_printf(stderr, 1, "%s: WARNING, replacing tags from input FLAC file with those given on the command-line\n", e->inbasefilename);
+ if(e->treat_warnings_as_errors) {
+ static_metadata_clear(&static_metadata);
+ return false;
+ }
+ FLAC__metadata_object_delete(flac_decoder_data->metadata_blocks[i]);
+ flac_decoder_data->metadata_blocks[i] = 0;
+ }
+ else
+ flac_decoder_data->metadata_blocks[j++] = flac_decoder_data->metadata_blocks[i];
+ }
+ flac_decoder_data->num_metadata_blocks = j;
+ if((!vc_found || options.vorbis_comment->data.vorbis_comment.num_comments > 0) && flac_decoder_data->num_metadata_blocks < sizeof(flac_decoder_data->metadata_blocks)/sizeof(flac_decoder_data->metadata_blocks[0])) {
+ /* prepend ours */
+ FLAC__StreamMetadata *vc = FLAC__metadata_object_clone(options.vorbis_comment);
+ if(0 == vc || (channel_mask && !flac__utils_set_channel_mask_tag(vc, channel_mask))) {
+ flac__utils_printf(stderr, 1, "%s: ERROR allocating memory for VORBIS_COMMENT block\n", e->inbasefilename);
+ static_metadata_clear(&static_metadata);
+ return false;
+ }
+ for(i = flac_decoder_data->num_metadata_blocks; i > 1; i--)
+ flac_decoder_data->metadata_blocks[i] = flac_decoder_data->metadata_blocks[i-1];
+ flac_decoder_data->metadata_blocks[1] = vc;
+ flac_decoder_data->num_metadata_blocks++;
+ }
+ }
+ {
+ /*
+ * next handle cuesheet: if --cuesheet was specified, use
+ * it; else if file has existing CUESHEET and cuesheet's
+ * lead-out offset is correct, keep it; else no CUESHEET
+ */
+ size_t i, j;
+ for(i = 0, j = 0; i < flac_decoder_data->num_metadata_blocks; i++) {
+ FLAC__bool existing_cuesheet_is_bad = false;
+ /* check if existing cuesheet matches the input audio */
+ if(flac_decoder_data->metadata_blocks[i]->type == FLAC__METADATA_TYPE_CUESHEET && 0 == static_metadata.cuesheet) {
+ const FLAC__StreamMetadata_CueSheet *cs = &flac_decoder_data->metadata_blocks[i]->data.cue_sheet;
+ if(e->total_samples_to_encode == 0) {
+ flac__utils_printf(stderr, 1, "%s: WARNING, cuesheet in input FLAC file cannot be kept if input size is not known, dropping it...\n", e->inbasefilename);
+ if(e->treat_warnings_as_errors) {
+ static_metadata_clear(&static_metadata);
+ return false;
+ }
+ existing_cuesheet_is_bad = true;
+ }
+ else if(e->total_samples_to_encode != cs->tracks[cs->num_tracks-1].offset) {
+ flac__utils_printf(stderr, 1, "%s: WARNING, lead-out offset of cuesheet in input FLAC file does not match input length, dropping existing cuesheet...\n", e->inbasefilename);
+ if(e->treat_warnings_as_errors) {
+ static_metadata_clear(&static_metadata);
+ return false;
+ }
+ existing_cuesheet_is_bad = true;
+ }
+ }
+ if(flac_decoder_data->metadata_blocks[i]->type == FLAC__METADATA_TYPE_CUESHEET && (existing_cuesheet_is_bad || 0 != static_metadata.cuesheet)) {
+ if(0 != static_metadata.cuesheet) {
+ flac__utils_printf(stderr, 1, "%s: WARNING, replacing cuesheet in input FLAC file with the one given on the command-line\n", e->inbasefilename);
+ if(e->treat_warnings_as_errors) {
+ static_metadata_clear(&static_metadata);
+ return false;
+ }
+ }
+ FLAC__metadata_object_delete(flac_decoder_data->metadata_blocks[i]);
+ flac_decoder_data->metadata_blocks[i] = 0;
+ }
+ else
+ flac_decoder_data->metadata_blocks[j++] = flac_decoder_data->metadata_blocks[i];
+ }
+ flac_decoder_data->num_metadata_blocks = j;
+ if(0 != static_metadata.cuesheet && flac_decoder_data->num_metadata_blocks < sizeof(flac_decoder_data->metadata_blocks)/sizeof(flac_decoder_data->metadata_blocks[0])) {
+ /* prepend ours */
+ FLAC__StreamMetadata *cs = FLAC__metadata_object_clone(static_metadata.cuesheet);
+ if(0 == cs) {
+ flac__utils_printf(stderr, 1, "%s: ERROR allocating memory for CUESHEET block\n", e->inbasefilename);
+ static_metadata_clear(&static_metadata);
+ return false;
+ }
+ for(i = flac_decoder_data->num_metadata_blocks; i > 1; i--)
+ flac_decoder_data->metadata_blocks[i] = flac_decoder_data->metadata_blocks[i-1];
+ flac_decoder_data->metadata_blocks[1] = cs;
+ flac_decoder_data->num_metadata_blocks++;
+ }
+ }
+ {
+ /*
+ * next handle seektable: if -S- was specified, no
+ * SEEKTABLE; else if -S was specified, use it/them;
+ * else if file has existing SEEKTABLE and input size is
+ * preserved (no --skip/--until/etc specified), keep it;
+ * else use default seektable options
+ *
+ * note: meanings of num_requested_seek_points:
+ * -1 : no -S option given, default to some value
+ * 0 : -S- given (no seektable)
+ * >0 : one or more -S options given
+ */
+ size_t i, j;
+ FLAC__bool existing_seektable = false;
+ for(i = 0, j = 0; i < flac_decoder_data->num_metadata_blocks; i++) {
+ if(flac_decoder_data->metadata_blocks[i]->type == FLAC__METADATA_TYPE_SEEKTABLE)
+ existing_seektable = true;
+ if(flac_decoder_data->metadata_blocks[i]->type == FLAC__METADATA_TYPE_SEEKTABLE && (e->total_samples_to_encode != flac_decoder_data->metadata_blocks[0]->data.stream_info.total_samples || options.num_requested_seek_points >= 0)) {
+ if(options.num_requested_seek_points > 0) {
+ flac__utils_printf(stderr, 1, "%s: WARNING, replacing seektable in input FLAC file with the one given on the command-line\n", e->inbasefilename);
+ if(e->treat_warnings_as_errors) {
+ static_metadata_clear(&static_metadata);
+ return false;
+ }
+ }
+ else if(options.num_requested_seek_points == 0)
+ ; /* no warning, silently delete existing SEEKTABLE since user specified --no-seektable (-S-) */
+ else {
+ flac__utils_printf(stderr, 1, "%s: WARNING, can't use existing seektable in input FLAC since the input size is changing or unknown, dropping existing SEEKTABLE block...\n", e->inbasefilename);
+ if(e->treat_warnings_as_errors) {
+ static_metadata_clear(&static_metadata);
+ return false;
+ }
+ }
+ FLAC__metadata_object_delete(flac_decoder_data->metadata_blocks[i]);
+ flac_decoder_data->metadata_blocks[i] = 0;
+ existing_seektable = false;
+ }
+ else
+ flac_decoder_data->metadata_blocks[j++] = flac_decoder_data->metadata_blocks[i];
+ }
+ flac_decoder_data->num_metadata_blocks = j;
+ if((options.num_requested_seek_points > 0 || (options.num_requested_seek_points < 0 && !existing_seektable)) && flac_decoder_data->num_metadata_blocks < sizeof(flac_decoder_data->metadata_blocks)/sizeof(flac_decoder_data->metadata_blocks[0])) {
+ /* prepend ours */
+ FLAC__StreamMetadata *st = FLAC__metadata_object_clone(e->seek_table_template);
+ if(0 == st) {
+ flac__utils_printf(stderr, 1, "%s: ERROR allocating memory for SEEKTABLE block\n", e->inbasefilename);
+ static_metadata_clear(&static_metadata);
+ return false;
+ }
+ for(i = flac_decoder_data->num_metadata_blocks; i > 1; i--)
+ flac_decoder_data->metadata_blocks[i] = flac_decoder_data->metadata_blocks[i-1];
+ flac_decoder_data->metadata_blocks[1] = st;
+ flac_decoder_data->num_metadata_blocks++;
+ }
+ }
+ {
+ /*
+ * finally handle padding: if --no-padding was specified,
+ * then delete all padding; else if -P was specified,
+ * use that instead of existing padding (if any); else
+ * if existing file has padding, move all existing
+ * padding blocks to one padding block at the end; else
+ * use default padding.
+ */
+ int p = -1;
+ size_t i, j;
+ for(i = 0, j = 0; i < flac_decoder_data->num_metadata_blocks; i++) {
+ if(flac_decoder_data->metadata_blocks[i]->type == FLAC__METADATA_TYPE_PADDING) {
+ if(p < 0)
+ p = 0;
+ p += flac_decoder_data->metadata_blocks[i]->length;
+ FLAC__metadata_object_delete(flac_decoder_data->metadata_blocks[i]);
+ flac_decoder_data->metadata_blocks[i] = 0;
+ }
+ else
+ flac_decoder_data->metadata_blocks[j++] = flac_decoder_data->metadata_blocks[i];
+ }
+ flac_decoder_data->num_metadata_blocks = j;
+ if(options.padding > 0)
+ p = options.padding;
+ if(p < 0)
+ p = e->total_samples_to_encode / e->sample_rate < 20*60? FLAC_ENCODE__DEFAULT_PADDING : FLAC_ENCODE__DEFAULT_PADDING*8;
+ if(options.padding != 0) {
+ if(p > 0 && flac_decoder_data->num_metadata_blocks < sizeof(flac_decoder_data->metadata_blocks)/sizeof(flac_decoder_data->metadata_blocks[0])) {
+ flac_decoder_data->metadata_blocks[flac_decoder_data->num_metadata_blocks] = FLAC__metadata_object_new(FLAC__METADATA_TYPE_PADDING);
+ if(0 == flac_decoder_data->metadata_blocks[flac_decoder_data->num_metadata_blocks]) {
+ flac__utils_printf(stderr, 1, "%s: ERROR allocating memory for PADDING block\n", e->inbasefilename);
+ static_metadata_clear(&static_metadata);
+ return false;
+ }
+ flac_decoder_data->metadata_blocks[flac_decoder_data->num_metadata_blocks]->is_last = false; /* the encoder will set this for us */
+ flac_decoder_data->metadata_blocks[flac_decoder_data->num_metadata_blocks]->length = p;
+ flac_decoder_data->num_metadata_blocks++;
+ }
+ }
+ }
+ metadata = &flac_decoder_data->metadata_blocks[1]; /* don't include STREAMINFO */
+ num_metadata = flac_decoder_data->num_metadata_blocks - 1;
+ }
+ else {
+ /*
+ * we're not encoding from FLAC so we will build the metadata
+ * from scratch
+ */
+ if(e->seek_table_template->data.seek_table.num_points > 0) {
+ e->seek_table_template->is_last = false; /* the encoder will set this for us */
+ static_metadata_append(&static_metadata, e->seek_table_template, /*needs_delete=*/false);
+ }
+ if(0 != static_metadata.cuesheet)
+ static_metadata_append(&static_metadata, static_metadata.cuesheet, /*needs_delete=*/false);
+ if(channel_mask) {
+ if(!flac__utils_set_channel_mask_tag(options.vorbis_comment, channel_mask)) {
+ flac__utils_printf(stderr, 1, "%s: ERROR adding channel mask tag\n", e->inbasefilename);
+ static_metadata_clear(&static_metadata);
+ return false;
+ }
+ }
+ static_metadata_append(&static_metadata, options.vorbis_comment, /*needs_delete=*/false);
+ for(i = 0; i < options.num_pictures; i++)
+ static_metadata_append(&static_metadata, options.pictures[i], /*needs_delete=*/false);
+ if(foreign_metadata) {
+ for(i = 0; i < foreign_metadata->num_blocks; i++) {
+ FLAC__StreamMetadata *p = FLAC__metadata_object_new(FLAC__METADATA_TYPE_PADDING);
+ if(!p) {
+ flac__utils_printf(stderr, 1, "%s: ERROR: out of memory\n", e->inbasefilename);
+ static_metadata_clear(&static_metadata);
+ return false;
+ }
+ static_metadata_append(&static_metadata, p, /*needs_delete=*/true);
+ static_metadata.metadata[static_metadata.num_metadata-1]->length = FLAC__STREAM_METADATA_APPLICATION_ID_LEN/8 + foreign_metadata->blocks[i].size;
+/*fprintf(stderr,"@@@@@@ add PADDING=%u\n",static_metadata.metadata[static_metadata.num_metadata-1]->length);*/
+ }
+ }
+ if(options.padding != 0) {
+ padding.is_last = false; /* the encoder will set this for us */
+ padding.type = FLAC__METADATA_TYPE_PADDING;
+ padding.length = (unsigned)(options.padding>0? options.padding : (e->total_samples_to_encode / e->sample_rate < 20*60? FLAC_ENCODE__DEFAULT_PADDING : FLAC_ENCODE__DEFAULT_PADDING*8));
+ static_metadata_append(&static_metadata, &padding, /*needs_delete=*/false);
+ }
+ metadata = static_metadata.metadata;
+ num_metadata = static_metadata.num_metadata;
+ }
+
+ /* check for a few things that have not already been checked. the
+ * FLAC__stream_encoder_init*() will check it but only return
+ * FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_METADATA so we check some
+ * up front to give a better error message.
+ */
+ if(!verify_metadata(e, metadata, num_metadata)) {
+ static_metadata_clear(&static_metadata);
+ return false;
+ }
+
+ FLAC__stream_encoder_set_verify(e->encoder, options.verify);
+ FLAC__stream_encoder_set_streamable_subset(e->encoder, !options.lax);
+ FLAC__stream_encoder_set_channels(e->encoder, channels);
+ FLAC__stream_encoder_set_bits_per_sample(e->encoder, bps);
+ FLAC__stream_encoder_set_sample_rate(e->encoder, sample_rate);
+ for(i = 0; i < options.num_compression_settings; i++) {
+ switch(options.compression_settings[i].type) {
+ case CST_BLOCKSIZE:
+ FLAC__stream_encoder_set_blocksize(e->encoder, options.compression_settings[i].value.t_unsigned);
+ break;
+ case CST_COMPRESSION_LEVEL:
+ FLAC__stream_encoder_set_compression_level(e->encoder, options.compression_settings[i].value.t_unsigned);
+ apodizations[0] = '\0';
+ break;
+ case CST_DO_MID_SIDE:
+ FLAC__stream_encoder_set_do_mid_side_stereo(e->encoder, options.compression_settings[i].value.t_bool);
+ break;
+ case CST_LOOSE_MID_SIDE:
+ FLAC__stream_encoder_set_loose_mid_side_stereo(e->encoder, options.compression_settings[i].value.t_bool);
+ break;
+ case CST_APODIZATION:
+ if(strlen(apodizations)+strlen(options.compression_settings[i].value.t_string)+2 >= sizeof(apodizations)) {
+ flac__utils_printf(stderr, 1, "%s: ERROR: too many apodization functions requested\n", e->inbasefilename);
+ static_metadata_clear(&static_metadata);
+ return false;
+ }
+ else {
+ strcat(apodizations, options.compression_settings[i].value.t_string);
+ strcat(apodizations, ";");
+ }
+ break;
+ case CST_MAX_LPC_ORDER:
+ FLAC__stream_encoder_set_max_lpc_order(e->encoder, options.compression_settings[i].value.t_unsigned);
+ break;
+ case CST_QLP_COEFF_PRECISION:
+ FLAC__stream_encoder_set_qlp_coeff_precision(e->encoder, options.compression_settings[i].value.t_unsigned);
+ break;
+ case CST_DO_QLP_COEFF_PREC_SEARCH:
+ FLAC__stream_encoder_set_do_qlp_coeff_prec_search(e->encoder, options.compression_settings[i].value.t_bool);
+ break;
+ case CST_DO_ESCAPE_CODING:
+ FLAC__stream_encoder_set_do_escape_coding(e->encoder, options.compression_settings[i].value.t_bool);
+ break;
+ case CST_DO_EXHAUSTIVE_MODEL_SEARCH:
+ FLAC__stream_encoder_set_do_exhaustive_model_search(e->encoder, options.compression_settings[i].value.t_bool);
+ break;
+ case CST_MIN_RESIDUAL_PARTITION_ORDER:
+ FLAC__stream_encoder_set_min_residual_partition_order(e->encoder, options.compression_settings[i].value.t_unsigned);
+ break;
+ case CST_MAX_RESIDUAL_PARTITION_ORDER:
+ FLAC__stream_encoder_set_max_residual_partition_order(e->encoder, options.compression_settings[i].value.t_unsigned);
+ break;
+ case CST_RICE_PARAMETER_SEARCH_DIST:
+ FLAC__stream_encoder_set_rice_parameter_search_dist(e->encoder, options.compression_settings[i].value.t_unsigned);
+ break;
+ }
+ }
+ if(*apodizations)
+ FLAC__stream_encoder_set_apodization(e->encoder, apodizations);
+ FLAC__stream_encoder_set_total_samples_estimate(e->encoder, e->total_samples_to_encode);
+ FLAC__stream_encoder_set_metadata(e->encoder, (num_metadata > 0)? metadata : 0, num_metadata);
+
+ FLAC__stream_encoder_disable_constant_subframes(e->encoder, options.debug.disable_constant_subframes);
+ FLAC__stream_encoder_disable_fixed_subframes(e->encoder, options.debug.disable_fixed_subframes);
+ FLAC__stream_encoder_disable_verbatim_subframes(e->encoder, options.debug.disable_verbatim_subframes);
+ if(!options.debug.do_md5) {
+ flac__utils_printf(stderr, 1, "%s: WARNING, MD5 computation disabled, resulting file will not have MD5 sum\n", e->inbasefilename);
+ if(e->treat_warnings_as_errors) {
+ static_metadata_clear(&static_metadata);
+ return false;
+ }
+ FLAC__stream_encoder_set_do_md5(e->encoder, false);
+ }
+
+#if FLAC__HAS_OGG
+ if(e->use_ogg) {
+ FLAC__stream_encoder_set_ogg_serial_number(e->encoder, options.serial_number);
+
+ init_status = FLAC__stream_encoder_init_ogg_file(e->encoder, e->is_stdout? 0 : e->outfilename, encoder_progress_callback, /*client_data=*/e);
+ }
+ else
+#endif
+ {
+ init_status = FLAC__stream_encoder_init_file(e->encoder, e->is_stdout? 0 : e->outfilename, encoder_progress_callback, /*client_data=*/e);
+ }
+
+ if(init_status != FLAC__STREAM_ENCODER_INIT_STATUS_OK) {
+ print_error_with_init_status(e, "ERROR initializing encoder", init_status);
+ if(FLAC__stream_encoder_get_state(e->encoder) != FLAC__STREAM_ENCODER_IO_ERROR)
+ e->outputfile_opened = true;
+ static_metadata_clear(&static_metadata);
+ return false;
+ }
+ else
+ e->outputfile_opened = true;
+
+ e->stats_mask =
+ (FLAC__stream_encoder_get_do_exhaustive_model_search(e->encoder) && FLAC__stream_encoder_get_do_qlp_coeff_prec_search(e->encoder))? 0x07 :
+ (FLAC__stream_encoder_get_do_exhaustive_model_search(e->encoder) || FLAC__stream_encoder_get_do_qlp_coeff_prec_search(e->encoder))? 0x0f :
+ 0x3f;
+
+ static_metadata_clear(&static_metadata);
+
+ return true;
+}
+
+FLAC__bool EncoderSession_process(EncoderSession *e, const FLAC__int32 * const buffer[], unsigned samples)
+{
+ if(e->replay_gain) {
+ if(!grabbag__replaygain_analyze(buffer, e->channels==2, e->bits_per_sample, samples)) {
+ flac__utils_printf(stderr, 1, "%s: WARNING, error while calculating ReplayGain\n", e->inbasefilename);
+ if(e->treat_warnings_as_errors)
+ return false;
+ }
+ }
+
+ return FLAC__stream_encoder_process(e->encoder, buffer, samples);
+}
+
+FLAC__bool convert_to_seek_table_template(const char *requested_seek_points, int num_requested_seek_points, FLAC__StreamMetadata *cuesheet, EncoderSession *e)
+{
+ const FLAC__bool only_placeholders = e->is_stdout;
+ FLAC__bool has_real_points;
+
+ if(num_requested_seek_points == 0 && 0 == cuesheet)
+ return true;
+
+ if(num_requested_seek_points < 0) {
+#if FLAC__HAS_OGG
+ /*@@@@@@ workaround ogg bug: too many seekpoints makes table not fit in one page */
+ if(e->use_ogg && e->total_samples_to_encode > 0 && e->total_samples_to_encode / e->sample_rate / 10 > 230)
+ requested_seek_points = "230x;";
+ else
+#endif
+ requested_seek_points = "10s;";
+ num_requested_seek_points = 1;
+ }
+
+ if(num_requested_seek_points > 0) {
+ if(!grabbag__seektable_convert_specification_to_template(requested_seek_points, only_placeholders, e->total_samples_to_encode, e->sample_rate, e->seek_table_template, &has_real_points))
+ return false;
+ }
+
+ if(0 != cuesheet) {
+ unsigned i, j;
+ const FLAC__StreamMetadata_CueSheet *cs = &cuesheet->data.cue_sheet;
+ for(i = 0; i < cs->num_tracks; i++) {
+ const FLAC__StreamMetadata_CueSheet_Track *tr = cs->tracks+i;
+ for(j = 0; j < tr->num_indices; j++) {
+ if(!FLAC__metadata_object_seektable_template_append_point(e->seek_table_template, tr->offset + tr->indices[j].offset))
+ return false;
+ has_real_points = true;
+ }
+ }
+ if(has_real_points)
+ if(!FLAC__metadata_object_seektable_template_sort(e->seek_table_template, /*compact=*/true))
+ return false;
+ }
+
+ if(has_real_points) {
+ if(e->is_stdout) {
+ flac__utils_printf(stderr, 1, "%s: WARNING, cannot write back seekpoints when encoding to stdout\n", e->inbasefilename);
+ if(e->treat_warnings_as_errors)
+ return false;
+ }
+ }
+
+ return true;
+}
+
+FLAC__bool canonicalize_until_specification(utils__SkipUntilSpecification *spec, const char *inbasefilename, unsigned sample_rate, FLAC__uint64 skip, FLAC__uint64 total_samples_in_input)
+{
+ /* convert from mm:ss.sss to sample number if necessary */
+ flac__utils_canonicalize_skip_until_specification(spec, sample_rate);
+
+ /* special case: if "--until=-0", use the special value '0' to mean "end-of-stream" */
+ if(spec->is_relative && spec->value.samples == 0) {
+ spec->is_relative = false;
+ return true;
+ }
+
+ /* in any other case the total samples in the input must be known */
+ if(total_samples_in_input == 0) {
+ flac__utils_printf(stderr, 1, "%s: ERROR, cannot use --until when input length is unknown\n", inbasefilename);
+ return false;
+ }
+
+ FLAC__ASSERT(spec->value_is_samples);
+
+ /* convert relative specifications to absolute */
+ if(spec->is_relative) {
+ if(spec->value.samples <= 0)
+ spec->value.samples += (FLAC__int64)total_samples_in_input;
+ else
+ spec->value.samples += skip;
+ spec->is_relative = false;
+ }
+
+ /* error check */
+ if(spec->value.samples < 0) {
+ flac__utils_printf(stderr, 1, "%s: ERROR, --until value is before beginning of input\n", inbasefilename);
+ return false;
+ }
+ if((FLAC__uint64)spec->value.samples <= skip) {
+ flac__utils_printf(stderr, 1, "%s: ERROR, --until value is before --skip point\n", inbasefilename);
+ return false;
+ }
+ if((FLAC__uint64)spec->value.samples > total_samples_in_input) {
+ flac__utils_printf(stderr, 1, "%s: ERROR, --until value is after end of input\n", inbasefilename);
+ return false;
+ }
+
+ return true;
+}
+
+FLAC__bool verify_metadata(const EncoderSession *e, FLAC__StreamMetadata **metadata, unsigned num_metadata)
+{
+ FLAC__bool metadata_picture_has_type1 = false;
+ FLAC__bool metadata_picture_has_type2 = false;
+ unsigned i;
+
+ FLAC__ASSERT(0 != metadata);
+ for(i = 0; i < num_metadata; i++) {
+ const FLAC__StreamMetadata *m = metadata[i];
+ if(m->type == FLAC__METADATA_TYPE_SEEKTABLE) {
+ if(!FLAC__format_seektable_is_legal(&m->data.seek_table)) {
+ flac__utils_printf(stderr, 1, "%s: ERROR: SEEKTABLE metadata block is invalid\n", e->inbasefilename);
+ return false;
+ }
+ }
+ else if(m->type == FLAC__METADATA_TYPE_CUESHEET) {
+ if(!FLAC__format_cuesheet_is_legal(&m->data.cue_sheet, m->data.cue_sheet.is_cd, /*violation=*/0)) {
+ flac__utils_printf(stderr, 1, "%s: ERROR: CUESHEET metadata block is invalid\n", e->inbasefilename);
+ return false;
+ }
+ }
+ else if(m->type == FLAC__METADATA_TYPE_PICTURE) {
+ const char *error = 0;
+ if(!FLAC__format_picture_is_legal(&m->data.picture, &error)) {
+ flac__utils_printf(stderr, 1, "%s: ERROR: PICTURE metadata block is invalid: %s\n", e->inbasefilename, error);
+ return false;
+ }
+ if(m->data.picture.type == FLAC__STREAM_METADATA_PICTURE_TYPE_FILE_ICON_STANDARD) {
+ if(metadata_picture_has_type1) {
+ flac__utils_printf(stderr, 1, "%s: ERROR: there may only be one picture of type 1 (32x32 icon) in the file\n", e->inbasefilename);
+ return false;
+ }
+ metadata_picture_has_type1 = true;
+ }
+ else if(m->data.picture.type == FLAC__STREAM_METADATA_PICTURE_TYPE_FILE_ICON) {
+ if(metadata_picture_has_type2) {
+ flac__utils_printf(stderr, 1, "%s: ERROR: there may only be one picture of type 2 (icon) in the file\n", e->inbasefilename);
+ return false;
+ }
+ metadata_picture_has_type2 = true;
+ }
+ }
+ }
+
+ return true;
+}
+
+FLAC__bool format_input(FLAC__int32 *dest[], unsigned wide_samples, FLAC__bool is_big_endian, FLAC__bool is_unsigned_samples, unsigned channels, unsigned bps, unsigned shift, size_t *channel_map)
+{
+ unsigned wide_sample, sample, channel, byte;
+ FLAC__int32 *out[FLAC__MAX_CHANNELS];
+
+ if(0 == channel_map) {
+ for(channel = 0; channel < channels; channel++)
+ out[channel] = dest[channel];
+ }
+ else {
+ for(channel = 0; channel < channels; channel++)
+ out[channel] = dest[channel_map[channel]];
+ }
+
+ if(bps == 8) {
+ if(is_unsigned_samples) {
+ for(sample = wide_sample = 0; wide_sample < wide_samples; wide_sample++)
+ for(channel = 0; channel < channels; channel++, sample++)
+ out[channel][wide_sample] = (FLAC__int32)ucbuffer_[sample] - 0x80;
+ }
+ else {
+ for(sample = wide_sample = 0; wide_sample < wide_samples; wide_sample++)
+ for(channel = 0; channel < channels; channel++, sample++)
+ out[channel][wide_sample] = (FLAC__int32)scbuffer_[sample];
+ }
+ }
+ else if(bps == 16) {
+ if(is_big_endian != is_big_endian_host_) {
+ unsigned char tmp;
+ const unsigned bytes = wide_samples * channels * (bps >> 3);
+ for(byte = 0; byte < bytes; byte += 2) {
+ tmp = ucbuffer_[byte];
+ ucbuffer_[byte] = ucbuffer_[byte+1];
+ ucbuffer_[byte+1] = tmp;
+ }
+ }
+ if(is_unsigned_samples) {
+ for(sample = wide_sample = 0; wide_sample < wide_samples; wide_sample++)
+ for(channel = 0; channel < channels; channel++, sample++)
+ out[channel][wide_sample] = (FLAC__int32)usbuffer_[sample] - 0x8000;
+ }
+ else {
+ for(sample = wide_sample = 0; wide_sample < wide_samples; wide_sample++)
+ for(channel = 0; channel < channels; channel++, sample++)
+ out[channel][wide_sample] = (FLAC__int32)ssbuffer_[sample];
+ }
+ }
+ else if(bps == 24) {
+ if(!is_big_endian) {
+ unsigned char tmp;
+ const unsigned bytes = wide_samples * channels * (bps >> 3);
+ for(byte = 0; byte < bytes; byte += 3) {
+ tmp = ucbuffer_[byte];
+ ucbuffer_[byte] = ucbuffer_[byte+2];
+ ucbuffer_[byte+2] = tmp;
+ }
+ }
+ if(is_unsigned_samples) {
+ for(byte = sample = wide_sample = 0; wide_sample < wide_samples; wide_sample++)
+ for(channel = 0; channel < channels; channel++, sample++) {
+ out[channel][wide_sample] = ucbuffer_[byte++]; out[channel][wide_sample] <<= 8;
+ out[channel][wide_sample] |= ucbuffer_[byte++]; out[channel][wide_sample] <<= 8;
+ out[channel][wide_sample] |= ucbuffer_[byte++];
+ out[channel][wide_sample] -= 0x800000;
+ }
+ }
+ else {
+ for(byte = sample = wide_sample = 0; wide_sample < wide_samples; wide_sample++)
+ for(channel = 0; channel < channels; channel++, sample++) {
+ out[channel][wide_sample] = scbuffer_[byte++]; out[channel][wide_sample] <<= 8;
+ out[channel][wide_sample] |= ucbuffer_[byte++]; out[channel][wide_sample] <<= 8;
+ out[channel][wide_sample] |= ucbuffer_[byte++];
+ }
+ }
+ }
+ else {
+ FLAC__ASSERT(0);
+ }
+ if(shift > 0) {
+ FLAC__int32 mask = (1<<shift)-1;
+ for(wide_sample = 0; wide_sample < wide_samples; wide_sample++)
+ for(channel = 0; channel < channels; channel++) {
+ if(out[channel][wide_sample] & mask) {
+ flac__utils_printf(stderr, 1, "ERROR during read, sample data (channel#%u sample#%u = %d) has non-zero least-significant bits\n WAVE/AIFF header said the last %u bits are not significant and should be zero.\n", channel, wide_sample, out[channel][wide_sample], shift);
+ return false;
+ }
+ out[channel][wide_sample] >>= shift;
+ }
+ }
+ return true;
+}
+
+void encoder_progress_callback(const FLAC__StreamEncoder *encoder, FLAC__uint64 bytes_written, FLAC__uint64 samples_written, unsigned frames_written, unsigned total_frames_estimate, void *client_data)
+{
+ EncoderSession *encoder_session = (EncoderSession*)client_data;
+
+ (void)encoder, (void)total_frames_estimate;
+
+ encoder_session->bytes_written = bytes_written;
+ encoder_session->samples_written = samples_written;
+
+ if(encoder_session->total_samples_to_encode > 0 && !((frames_written-1) & encoder_session->stats_mask))
+ print_stats(encoder_session);
+}
+
+FLAC__StreamDecoderReadStatus flac_decoder_read_callback(const FLAC__StreamDecoder *decoder, FLAC__byte buffer[], size_t *bytes, void *client_data)
+{
+ size_t n = 0;
+ FLACDecoderData *data = (FLACDecoderData*)client_data;
+ (void)decoder;
+
+ if (data->fatal_error)
+ return FLAC__STREAM_DECODER_READ_STATUS_ABORT;
+
+ /* use up lookahead first */
+ if (data->lookahead_length) {
+ n = min(data->lookahead_length, *bytes);
+ memcpy(buffer, data->lookahead, n);
+ buffer += n;
+ data->lookahead += n;
+ data->lookahead_length -= n;
+ }
+
+ /* get the rest from file */
+ if (*bytes > n) {
+ *bytes = n + fread(buffer, 1, *bytes-n, data->encoder_session->fin);
+ if(ferror(data->encoder_session->fin))
+ return FLAC__STREAM_DECODER_READ_STATUS_ABORT;
+ else if(0 == *bytes)
+ return FLAC__STREAM_DECODER_READ_STATUS_END_OF_STREAM;
+ else
+ return FLAC__STREAM_DECODER_READ_STATUS_CONTINUE;
+ }
+ else
+ return FLAC__STREAM_DECODER_READ_STATUS_CONTINUE;
+}
+
+FLAC__StreamDecoderSeekStatus flac_decoder_seek_callback(const FLAC__StreamDecoder *decoder, FLAC__uint64 absolute_byte_offset, void *client_data)
+{
+ FLACDecoderData *data = (FLACDecoderData*)client_data;
+ (void)decoder;
+
+ if(fseeko(data->encoder_session->fin, (off_t)absolute_byte_offset, SEEK_SET) < 0)
+ return FLAC__STREAM_DECODER_SEEK_STATUS_ERROR;
+ else
+ return FLAC__STREAM_DECODER_SEEK_STATUS_OK;
+}
+
+FLAC__StreamDecoderTellStatus flac_decoder_tell_callback(const FLAC__StreamDecoder *decoder, FLAC__uint64 *absolute_byte_offset, void *client_data)
+{
+ FLACDecoderData *data = (FLACDecoderData*)client_data;
+ off_t pos;
+ (void)decoder;
+
+ if((pos = ftello(data->encoder_session->fin)) < 0)
+ return FLAC__STREAM_DECODER_TELL_STATUS_ERROR;
+ else {
+ *absolute_byte_offset = (FLAC__uint64)pos;
+ return FLAC__STREAM_DECODER_TELL_STATUS_OK;
+ }
+}
+
+FLAC__StreamDecoderLengthStatus flac_decoder_length_callback(const FLAC__StreamDecoder *decoder, FLAC__uint64 *stream_length, void *client_data)
+{
+ FLACDecoderData *data = (FLACDecoderData*)client_data;
+ (void)decoder;
+
+ if(0 == data->filesize)
+ return FLAC__STREAM_DECODER_LENGTH_STATUS_ERROR;
+ else {
+ *stream_length = (FLAC__uint64)data->filesize;
+ return FLAC__STREAM_DECODER_LENGTH_STATUS_OK;
+ }
+}
+
+FLAC__bool flac_decoder_eof_callback(const FLAC__StreamDecoder *decoder, void *client_data)
+{
+ FLACDecoderData *data = (FLACDecoderData*)client_data;
+ (void)decoder;
+
+ return feof(data->encoder_session->fin)? true : false;
+}
+
+FLAC__StreamDecoderWriteStatus flac_decoder_write_callback(const FLAC__StreamDecoder *decoder, const FLAC__Frame *frame, const FLAC__int32 * const buffer[], void *client_data)
+{
+ FLACDecoderData *data = (FLACDecoderData*)client_data;
+ FLAC__uint64 n = min(data->samples_left_to_process, frame->header.blocksize);
+ (void)decoder;
+
+ if(!EncoderSession_process(data->encoder_session, buffer, (unsigned)n)) {
+ print_error_with_state(data->encoder_session, "ERROR during encoding");
+ data->fatal_error = true;
+ return FLAC__STREAM_DECODER_WRITE_STATUS_ABORT;
+ }
+
+ data->samples_left_to_process -= n;
+ return FLAC__STREAM_DECODER_WRITE_STATUS_CONTINUE;
+}
+
+void flac_decoder_metadata_callback(const FLAC__StreamDecoder *decoder, const FLAC__StreamMetadata *metadata, void *client_data)
+{
+ FLACDecoderData *data = (FLACDecoderData*)client_data;
+ (void)decoder;
+
+ if (data->fatal_error)
+ return;
+
+ if (
+ data->num_metadata_blocks == sizeof(data->metadata_blocks)/sizeof(data->metadata_blocks[0]) ||
+ 0 == (data->metadata_blocks[data->num_metadata_blocks] = FLAC__metadata_object_clone(metadata))
+ )
+ data->fatal_error = true;
+ else
+ data->num_metadata_blocks++;
+}
+
+void flac_decoder_error_callback(const FLAC__StreamDecoder *decoder, FLAC__StreamDecoderErrorStatus status, void *client_data)
+{
+ FLACDecoderData *data = (FLACDecoderData*)client_data;
+ (void)decoder;
+
+ flac__utils_printf(stderr, 1, "%s: ERROR got %s while decoding FLAC input\n", data->encoder_session->inbasefilename, FLAC__StreamDecoderErrorStatusString[status]);
+ if(!data->encoder_session->continue_through_decode_errors)
+ data->fatal_error = true;
+}
+
+FLAC__bool parse_cuesheet(FLAC__StreamMetadata **cuesheet, const char *cuesheet_filename, const char *inbasefilename, FLAC__bool is_cdda, FLAC__uint64 lead_out_offset, FLAC__bool treat_warnings_as_errors)
+{
+ FILE *f;
+ unsigned last_line_read;
+ const char *error_message;
+
+ if(0 == cuesheet_filename)
+ return true;
+
+ if(lead_out_offset == 0) {
+ flac__utils_printf(stderr, 1, "%s: ERROR cannot import cuesheet when the number of input samples to encode is unknown\n", inbasefilename);
+ return false;
+ }
+
+ if(0 == (f = fopen(cuesheet_filename, "r"))) {
+ flac__utils_printf(stderr, 1, "%s: ERROR opening cuesheet \"%s\" for reading: %s\n", inbasefilename, cuesheet_filename, strerror(errno));
+ return false;
+ }
+
+ *cuesheet = grabbag__cuesheet_parse(f, &error_message, &last_line_read, is_cdda, lead_out_offset);
+
+ fclose(f);
+
+ if(0 == *cuesheet) {
+ flac__utils_printf(stderr, 1, "%s: ERROR parsing cuesheet \"%s\" on line %u: %s\n", inbasefilename, cuesheet_filename, last_line_read, error_message);
+ return false;
+ }
+
+ if(!FLAC__format_cuesheet_is_legal(&(*cuesheet)->data.cue_sheet, /*check_cd_da_subset=*/false, &error_message)) {
+ flac__utils_printf(stderr, 1, "%s: ERROR parsing cuesheet \"%s\": %s\n", inbasefilename, cuesheet_filename, error_message);
+ return false;
+ }
+
+ /* if we're expecting CDDA, warn about non-compliance */
+ if(is_cdda && !FLAC__format_cuesheet_is_legal(&(*cuesheet)->data.cue_sheet, /*check_cd_da_subset=*/true, &error_message)) {
+ flac__utils_printf(stderr, 1, "%s: WARNING cuesheet \"%s\" is not audio CD compliant: %s\n", inbasefilename, cuesheet_filename, error_message);
+ if(treat_warnings_as_errors)
+ return false;
+ (*cuesheet)->data.cue_sheet.is_cd = false;
+ }
+
+ return true;
+}
+
+void print_stats(const EncoderSession *encoder_session)
+{
+ const FLAC__uint64 samples_written = min(encoder_session->total_samples_to_encode, encoder_session->samples_written);
+#if defined _MSC_VER || defined __MINGW32__
+ /* with MSVC you have to spoon feed it the casting */
+ const double progress = (double)(FLAC__int64)samples_written / (double)(FLAC__int64)encoder_session->total_samples_to_encode;
+ const double ratio = (double)(FLAC__int64)encoder_session->bytes_written / ((double)(FLAC__int64)encoder_session->unencoded_size * min(1.0, progress));
+#else
+ const double progress = (double)samples_written / (double)encoder_session->total_samples_to_encode;
+ const double ratio = (double)encoder_session->bytes_written / ((double)encoder_session->unencoded_size * min(1.0, progress));
+#endif
+
+ FLAC__ASSERT(encoder_session->total_samples_to_encode > 0);
+
+ if(samples_written == encoder_session->total_samples_to_encode) {
+ flac__utils_printf(stderr, 2, "\r%s:%s wrote %u bytes, ratio=%0.3f",
+ encoder_session->inbasefilename,
+ encoder_session->verify? " Verify OK," : "",
+ (unsigned)encoder_session->bytes_written,
+ ratio
+ );
+ }
+ else {
+ flac__utils_printf(stderr, 2, "\r%s: %u%% complete, ratio=%0.3f", encoder_session->inbasefilename, (unsigned)floor(progress * 100.0 + 0.5), ratio);
+ }
+}
+
+void print_error_with_init_status(const EncoderSession *e, const char *message, FLAC__StreamEncoderInitStatus init_status)
+{
+ const int ilen = strlen(e->inbasefilename) + 1;
+ const char *state_string = "";
+
+ flac__utils_printf(stderr, 1, "\n%s: %s\n", e->inbasefilename, message);
+
+ flac__utils_printf(stderr, 1, "%*s init_status = %s\n", ilen, "", FLAC__StreamEncoderInitStatusString[init_status]);
+
+ if(init_status == FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR) {
+ state_string = FLAC__stream_encoder_get_resolved_state_string(e->encoder);
+
+ flac__utils_printf(stderr, 1, "%*s state = %s\n", ilen, "", state_string);
+
+ /* print out some more info for some errors: */
+ if(0 == strcmp(state_string, FLAC__StreamEncoderStateString[FLAC__STREAM_ENCODER_CLIENT_ERROR])) {
+ flac__utils_printf(stderr, 1,
+ "\n"
+ "An error occurred while writing; the most common cause is that the disk is full.\n"
+ );
+ }
+ else if(0 == strcmp(state_string, FLAC__StreamEncoderStateString[FLAC__STREAM_ENCODER_IO_ERROR])) {
+ flac__utils_printf(stderr, 1,
+ "\n"
+ "An error occurred opening the output file; it is likely that the output\n"
+ "directory does not exist or is not writable, the output file already exists and\n"
+ "is not writable, or the disk is full.\n"
+ );
+ }
+ }
+ else if(init_status == FLAC__STREAM_ENCODER_INIT_STATUS_NOT_STREAMABLE) {
+ flac__utils_printf(stderr, 1,
+ "\n"
+ "The encoding parameters specified do not conform to the FLAC Subset and may not\n"
+ "be streamable or playable in hardware devices. If you really understand the\n"
+ "consequences, you can add --lax to the command-line options to encode with\n"
+ "these parameters anyway. See http://flac.sourceforge.net/format.html#subset\n"
+ );
+ }
+}
+
+void print_error_with_state(const EncoderSession *e, const char *message)
+{
+ const int ilen = strlen(e->inbasefilename) + 1;
+ const char *state_string;
+
+ flac__utils_printf(stderr, 1, "\n%s: %s\n", e->inbasefilename, message);
+
+ state_string = FLAC__stream_encoder_get_resolved_state_string(e->encoder);
+
+ flac__utils_printf(stderr, 1, "%*s state = %s\n", ilen, "", state_string);
+
+ /* print out some more info for some errors: */
+ if(0 == strcmp(state_string, FLAC__StreamEncoderStateString[FLAC__STREAM_ENCODER_CLIENT_ERROR])) {
+ flac__utils_printf(stderr, 1,
+ "\n"
+ "An error occurred while writing; the most common cause is that the disk is full.\n"
+ );
+ }
+}
+
+void print_verify_error(EncoderSession *e)
+{
+ FLAC__uint64 absolute_sample;
+ unsigned frame_number;
+ unsigned channel;
+ unsigned sample;
+ FLAC__int32 expected;
+ FLAC__int32 got;
+
+ FLAC__stream_encoder_get_verify_decoder_error_stats(e->encoder, &absolute_sample, &frame_number, &channel, &sample, &expected, &got);
+
+ flac__utils_printf(stderr, 1, "%s: ERROR: mismatch in decoded data, verify FAILED!\n", e->inbasefilename);
+ flac__utils_printf(stderr, 1, " Absolute sample=%u, frame=%u, channel=%u, sample=%u, expected %d, got %d\n", (unsigned)absolute_sample, frame_number, channel, sample, expected, got);
+ flac__utils_printf(stderr, 1, " In all known cases, verify errors are caused by hardware problems,\n");
+ flac__utils_printf(stderr, 1, " usually overclocking or bad RAM. Delete %s\n", e->outfilename);
+ flac__utils_printf(stderr, 1, " and repeat the flac command exactly as before. If it does not give a\n");
+ flac__utils_printf(stderr, 1, " verify error in the exact same place each time you try it, then there is\n");
+ flac__utils_printf(stderr, 1, " a problem with your hardware; please see the FAQ:\n");
+ flac__utils_printf(stderr, 1, " http://flac.sourceforge.net/faq.html#tools__hardware_prob\n");
+ flac__utils_printf(stderr, 1, " If it does fail in the exact same place every time, keep\n");
+ flac__utils_printf(stderr, 1, " %s and submit a bug report to:\n", e->outfilename);
+ flac__utils_printf(stderr, 1, " https://sourceforge.net/bugs/?func=addbug&group_id=13478\n");
+ flac__utils_printf(stderr, 1, " Make sure to upload the FLAC file and use the \"Monitor\" feature to\n");
+ flac__utils_printf(stderr, 1, " monitor the bug status.\n");
+ flac__utils_printf(stderr, 1, "Verify FAILED! Do not trust %s\n", e->outfilename);
+}
+
+FLAC__bool read_little_endian_uint16(FILE *f, FLAC__uint16 *val, FLAC__bool eof_ok, const char *fn)
+{
+ size_t bytes_read = fread(val, 1, 2, f);
+
+ if(bytes_read == 0) {
+ if(!eof_ok) {
+ flac__utils_printf(stderr, 1, "%s: ERROR: unexpected EOF\n", fn);
+ return false;
+ }
+ else
+ return true;
+ }
+ else if(bytes_read < 2) {
+ flac__utils_printf(stderr, 1, "%s: ERROR: unexpected EOF\n", fn);
+ return false;
+ }
+ else {
+ if(is_big_endian_host_) {
+ FLAC__byte tmp, *b = (FLAC__byte*)val;
+ tmp = b[1]; b[1] = b[0]; b[0] = tmp;
+ }
+ return true;
+ }
+}
+
+FLAC__bool read_little_endian_uint32(FILE *f, FLAC__uint32 *val, FLAC__bool eof_ok, const char *fn)
+{
+ size_t bytes_read = fread(val, 1, 4, f);
+
+ if(bytes_read == 0) {
+ if(!eof_ok) {
+ flac__utils_printf(stderr, 1, "%s: ERROR: unexpected EOF\n", fn);
+ return false;
+ }
+ else
+ return true;
+ }
+ else if(bytes_read < 4) {
+ flac__utils_printf(stderr, 1, "%s: ERROR: unexpected EOF\n", fn);
+ return false;
+ }
+ else {
+ if(is_big_endian_host_) {
+ FLAC__byte tmp, *b = (FLAC__byte*)val;
+ tmp = b[3]; b[3] = b[0]; b[0] = tmp;
+ tmp = b[2]; b[2] = b[1]; b[1] = tmp;
+ }
+ return true;
+ }
+}
+
+FLAC__bool read_big_endian_uint16(FILE *f, FLAC__uint16 *val, FLAC__bool eof_ok, const char *fn)
+{
+ unsigned char buf[4];
+ size_t bytes_read= fread(buf, 1, 2, f);
+
+ if(bytes_read==0U && eof_ok)
+ return true;
+ else if(bytes_read<2U) {
+ flac__utils_printf(stderr, 1, "%s: ERROR: unexpected EOF\n", fn);
+ return false;
+ }
+
+ /* this is independent of host endianness */
+ *val= (FLAC__uint16)(buf[0])<<8 | buf[1];
+
+ return true;
+}
+
+FLAC__bool read_big_endian_uint32(FILE *f, FLAC__uint32 *val, FLAC__bool eof_ok, const char *fn)
+{
+ unsigned char buf[4];
+ size_t bytes_read= fread(buf, 1, 4, f);
+
+ if(bytes_read==0U && eof_ok)
+ return true;
+ else if(bytes_read<4U) {
+ flac__utils_printf(stderr, 1, "%s: ERROR: unexpected EOF\n", fn);
+ return false;
+ }
+
+ /* this is independent of host endianness */
+ *val= (FLAC__uint32)(buf[0])<<24 | (FLAC__uint32)(buf[1])<<16 |
+ (FLAC__uint32)(buf[2])<<8 | buf[3];
+
+ return true;
+}
+
+FLAC__bool read_sane_extended(FILE *f, FLAC__uint32 *val, FLAC__bool eof_ok, const char *fn)
+ /* Read an IEEE 754 80-bit (aka SANE) extended floating point value from 'f',
+ * convert it into an integral value and store in 'val'. Return false if only
+ * between 1 and 9 bytes remain in 'f', if 0 bytes remain in 'f' and 'eof_ok' is
+ * false, or if the value is negative, between zero and one, or too large to be
+ * represented by 'val'; return true otherwise.
+ */
+{
+ unsigned int i;
+ unsigned char buf[10];
+ size_t bytes_read= fread(buf, 1U, 10U, f);
+ FLAC__int16 e= ((FLAC__uint16)(buf[0])<<8 | (FLAC__uint16)(buf[1]))-0x3FFF;
+ FLAC__int16 shift= 63-e;
+ FLAC__uint64 p= 0U;
+
+ if(bytes_read==0U && eof_ok)
+ return true;
+ else if(bytes_read<10U) {
+ flac__utils_printf(stderr, 1, "%s: ERROR: unexpected EOF\n", fn);
+ return false;
+ }
+ else if((buf[0]>>7)==1U || e<0 || e>63) {
+ flac__utils_printf(stderr, 1, "%s: ERROR: invalid floating-point value\n", fn);
+ return false;
+ }
+
+ for(i= 0U; i<8U; ++i)
+ p|= (FLAC__uint64)(buf[i+2])<<(56U-i*8);
+ *val= (FLAC__uint32)((p>>shift)+(p>>(shift-1) & 0x1));
+
+ return true;
+}
+
+FLAC__bool fskip_ahead(FILE *f, FLAC__uint64 offset)
+{
+ static unsigned char dump[8192];
+
+#ifdef _MSC_VER
+ if(f == stdin) {
+ /* MS' stdio impl can't even seek forward on stdin, have to use pure non-fseek() version: */
+ while(offset > 0) {
+ const long need = (long)min(offset, sizeof(dump));
+ if((long)fread(dump, 1, need, f) < need)
+ return false;
+ offset -= need;
+ }
+ }
+ else
+#endif
+ {
+ while(offset > 0) {
+ long need = (long)min(offset, LONG_MAX);
+ if(fseeko(f, need, SEEK_CUR) < 0) {
+ need = (long)min(offset, sizeof(dump));
+ if((long)fread(dump, 1, need, f) < need)
+ return false;
+ }
+ offset -= need;
+ }
+ }
+ return true;
+}
+
+unsigned count_channel_mask_bits(FLAC__uint32 mask)
+{
+ unsigned count = 0;
+ while(mask) {
+ if(mask & 1)
+ count++;
+ mask >>= 1;
+ }
+ return count;
+}
+
+#if 0
+FLAC__uint32 limit_channel_mask(FLAC__uint32 mask, unsigned channels)
+{
+ FLAC__uint32 x = 0x80000000;
+ unsigned count = count_channel_mask_bits(mask);
+ while(x && count > channels) {
+ if(mask & x) {
+ mask &= ~x;
+ count--;
+ }
+ x >>= 1;
+ }
+ FLAC__ASSERT(count_channel_mask_bits(mask) == channels);
+ return mask;
+}
+#endif