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Diffstat (limited to '3rdparty/libflac/src/plugin_xmms/plugin.c')
-rw-r--r--3rdparty/libflac/src/plugin_xmms/plugin.c684
1 files changed, 684 insertions, 0 deletions
diff --git a/3rdparty/libflac/src/plugin_xmms/plugin.c b/3rdparty/libflac/src/plugin_xmms/plugin.c
new file mode 100644
index 00000000000..24a79b770ef
--- /dev/null
+++ b/3rdparty/libflac/src/plugin_xmms/plugin.c
@@ -0,0 +1,684 @@
+/* libxmms-flac - XMMS FLAC input plugin
+ * 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
+
+#include <limits.h>
+#include <pthread.h>
+#include <stdlib.h>
+#include <string.h>
+#include <stdio.h>
+#include <glib.h>
+#include <pwd.h>
+#include <sys/types.h>
+#include <unistd.h>
+
+#include <xmms/plugin.h>
+#include <xmms/util.h>
+#include <xmms/configfile.h>
+#include <xmms/titlestring.h>
+
+#ifdef HAVE_LANGINFO_CODESET
+#include <langinfo.h>
+#endif
+
+#include "FLAC/all.h"
+#include "plugin_common/all.h"
+#include "share/grabbag.h"
+#include "share/replaygain_synthesis.h"
+#include "configure.h"
+#include "charset.h"
+#include "http.h"
+#include "tag.h"
+
+#ifdef min
+#undef min
+#endif
+#define min(x,y) ((x)<(y)?(x):(y))
+
+extern void FLAC_XMMS__file_info_box(char *filename);
+
+typedef struct {
+ FLAC__bool abort_flag;
+ FLAC__bool is_playing;
+ FLAC__bool is_http_source;
+ FLAC__bool eof;
+ FLAC__bool play_thread_open; /* if true, is_playing must also be true */
+ FLAC__uint64 total_samples;
+ unsigned bits_per_sample;
+ unsigned channels;
+ unsigned sample_rate;
+ int length_in_msec; /* int (instead of FLAC__uint64) only because that's what XMMS uses; seeking won't work right if this maxes out */
+ gchar *title;
+ AFormat sample_format;
+ unsigned sample_format_bytes_per_sample;
+ int seek_to_in_sec;
+ FLAC__bool has_replaygain;
+ double replay_scale;
+ DitherContext dither_context;
+} stream_data_struct;
+
+static void FLAC_XMMS__init(void);
+static int FLAC_XMMS__is_our_file(char *filename);
+static void FLAC_XMMS__play_file(char *filename);
+static void FLAC_XMMS__stop(void);
+static void FLAC_XMMS__pause(short p);
+static void FLAC_XMMS__seek(int time);
+static int FLAC_XMMS__get_time(void);
+static void FLAC_XMMS__cleanup(void);
+static void FLAC_XMMS__get_song_info(char *filename, char **title, int *length);
+
+static void *play_loop_(void *arg);
+
+static FLAC__bool safe_decoder_init_(const char *filename, FLAC__StreamDecoder *decoder);
+static void safe_decoder_finish_(FLAC__StreamDecoder *decoder);
+static void safe_decoder_delete_(FLAC__StreamDecoder *decoder);
+
+static FLAC__StreamDecoderReadStatus http_read_callback_(const FLAC__StreamDecoder *decoder, FLAC__byte buffer[], size_t *bytes, void *client_data);
+static FLAC__StreamDecoderWriteStatus write_callback_(const FLAC__StreamDecoder *decoder, const FLAC__Frame *frame, const FLAC__int32 * const buffer[], void *client_data);
+static void metadata_callback_(const FLAC__StreamDecoder *decoder, const FLAC__StreamMetadata *metadata, void *client_data);
+static void error_callback_(const FLAC__StreamDecoder *decoder, FLAC__StreamDecoderErrorStatus status, void *client_data);
+
+InputPlugin flac_ip =
+{
+ NULL,
+ NULL,
+ "FLAC Player v" VERSION,
+ FLAC_XMMS__init,
+ FLAC_XMMS__aboutbox,
+ FLAC_XMMS__configure,
+ FLAC_XMMS__is_our_file,
+ NULL,
+ FLAC_XMMS__play_file,
+ FLAC_XMMS__stop,
+ FLAC_XMMS__pause,
+ FLAC_XMMS__seek,
+ NULL,
+ FLAC_XMMS__get_time,
+ NULL,
+ NULL,
+ FLAC_XMMS__cleanup,
+ NULL,
+ NULL,
+ NULL,
+ NULL,
+ FLAC_XMMS__get_song_info,
+ FLAC_XMMS__file_info_box,
+ NULL
+};
+
+#define SAMPLES_PER_WRITE 512
+#define SAMPLE_BUFFER_SIZE ((FLAC__MAX_BLOCK_SIZE + SAMPLES_PER_WRITE) * FLAC_PLUGIN__MAX_SUPPORTED_CHANNELS * (24/8))
+static FLAC__byte sample_buffer_[SAMPLE_BUFFER_SIZE];
+static unsigned sample_buffer_first_, sample_buffer_last_;
+
+static FLAC__StreamDecoder *decoder_ = 0;
+static stream_data_struct stream_data_;
+static pthread_t decode_thread_;
+static FLAC__bool audio_error_ = false;
+static FLAC__bool is_big_endian_host_;
+
+#define BITRATE_HIST_SEGMENT_MSEC 500
+/* 500ms * 50 = 25s should be enough */
+#define BITRATE_HIST_SIZE 50
+static unsigned bitrate_history_[BITRATE_HIST_SIZE];
+
+
+InputPlugin *get_iplugin_info(void)
+{
+ flac_ip.description = g_strdup_printf("Reference FLAC Player v%s", FLAC__VERSION_STRING);
+ return &flac_ip;
+}
+
+void set_track_info(const char* title, int length_in_msec)
+{
+ if (stream_data_.is_playing) {
+ flac_ip.set_info((char*) title, length_in_msec, stream_data_.sample_rate * stream_data_.channels * stream_data_.bits_per_sample, stream_data_.sample_rate, stream_data_.channels);
+ }
+}
+
+static gchar* homedir(void)
+{
+ gchar *result;
+ char *env_home = getenv("HOME");
+ if (env_home) {
+ result = g_strdup (env_home);
+ } else {
+ uid_t uid = getuid();
+ struct passwd *pwent;
+ do {
+ pwent = getpwent();
+ } while (pwent && pwent->pw_uid != uid);
+ result = pwent ? g_strdup (pwent->pw_dir) : NULL;
+ endpwent();
+ }
+ return result;
+}
+
+static FLAC__bool is_http_source(const char *source)
+{
+ return 0 == strncasecmp(source, "http://", 7);
+}
+
+void FLAC_XMMS__init(void)
+{
+ ConfigFile *cfg;
+ FLAC__uint32 test = 1;
+
+ is_big_endian_host_ = (*((FLAC__byte*)(&test)))? false : true;
+
+ flac_cfg.title.tag_override = FALSE;
+ if (flac_cfg.title.tag_format)
+ g_free(flac_cfg.title.tag_format);
+ flac_cfg.title.convert_char_set = FALSE;
+
+ cfg = xmms_cfg_open_default_file();
+
+ /* title */
+
+ xmms_cfg_read_boolean(cfg, "flac", "title.tag_override", &flac_cfg.title.tag_override);
+
+ if(!xmms_cfg_read_string(cfg, "flac", "title.tag_format", &flac_cfg.title.tag_format))
+ flac_cfg.title.tag_format = g_strdup("%p - %t");
+
+ xmms_cfg_read_boolean(cfg, "flac", "title.convert_char_set", &flac_cfg.title.convert_char_set);
+
+ if(!xmms_cfg_read_string(cfg, "flac", "title.user_char_set", &flac_cfg.title.user_char_set))
+ flac_cfg.title.user_char_set = FLAC_plugin__charset_get_current();
+
+ /* replaygain */
+
+ xmms_cfg_read_boolean(cfg, "flac", "output.replaygain.enable", &flac_cfg.output.replaygain.enable);
+
+ xmms_cfg_read_boolean(cfg, "flac", "output.replaygain.album_mode", &flac_cfg.output.replaygain.album_mode);
+
+ if(!xmms_cfg_read_int(cfg, "flac", "output.replaygain.preamp", &flac_cfg.output.replaygain.preamp))
+ flac_cfg.output.replaygain.preamp = 0;
+
+ xmms_cfg_read_boolean(cfg, "flac", "output.replaygain.hard_limit", &flac_cfg.output.replaygain.hard_limit);
+
+ xmms_cfg_read_boolean(cfg, "flac", "output.resolution.normal.dither_24_to_16", &flac_cfg.output.resolution.normal.dither_24_to_16);
+ xmms_cfg_read_boolean(cfg, "flac", "output.resolution.replaygain.dither", &flac_cfg.output.resolution.replaygain.dither);
+
+ if(!xmms_cfg_read_int(cfg, "flac", "output.resolution.replaygain.noise_shaping", &flac_cfg.output.resolution.replaygain.noise_shaping))
+ flac_cfg.output.resolution.replaygain.noise_shaping = 1;
+
+ if(!xmms_cfg_read_int(cfg, "flac", "output.resolution.replaygain.bps_out", &flac_cfg.output.resolution.replaygain.bps_out))
+ flac_cfg.output.resolution.replaygain.bps_out = 16;
+
+ /* stream */
+
+ xmms_cfg_read_int(cfg, "flac", "stream.http_buffer_size", &flac_cfg.stream.http_buffer_size);
+ xmms_cfg_read_int(cfg, "flac", "stream.http_prebuffer", &flac_cfg.stream.http_prebuffer);
+ xmms_cfg_read_boolean(cfg, "flac", "stream.use_proxy", &flac_cfg.stream.use_proxy);
+ if(flac_cfg.stream.proxy_host)
+ g_free(flac_cfg.stream.proxy_host);
+ if(!xmms_cfg_read_string(cfg, "flac", "stream.proxy_host", &flac_cfg.stream.proxy_host))
+ flac_cfg.stream.proxy_host = g_strdup("");
+ xmms_cfg_read_int(cfg, "flac", "stream.proxy_port", &flac_cfg.stream.proxy_port);
+ xmms_cfg_read_boolean(cfg, "flac", "stream.proxy_use_auth", &flac_cfg.stream.proxy_use_auth);
+ if(flac_cfg.stream.proxy_user)
+ g_free(flac_cfg.stream.proxy_user);
+ flac_cfg.stream.proxy_user = NULL;
+ xmms_cfg_read_string(cfg, "flac", "stream.proxy_user", &flac_cfg.stream.proxy_user);
+ if(flac_cfg.stream.proxy_pass)
+ g_free(flac_cfg.stream.proxy_pass);
+ flac_cfg.stream.proxy_pass = NULL;
+ xmms_cfg_read_string(cfg, "flac", "stream.proxy_pass", &flac_cfg.stream.proxy_pass);
+ xmms_cfg_read_boolean(cfg, "flac", "stream.save_http_stream", &flac_cfg.stream.save_http_stream);
+ if (flac_cfg.stream.save_http_path)
+ g_free (flac_cfg.stream.save_http_path);
+ if (!xmms_cfg_read_string(cfg, "flac", "stream.save_http_path", &flac_cfg.stream.save_http_path) || ! *flac_cfg.stream.save_http_path) {
+ if (flac_cfg.stream.save_http_path)
+ g_free (flac_cfg.stream.save_http_path);
+ flac_cfg.stream.save_http_path = homedir();
+ }
+ xmms_cfg_read_boolean(cfg, "flac", "stream.cast_title_streaming", &flac_cfg.stream.cast_title_streaming);
+ xmms_cfg_read_boolean(cfg, "flac", "stream.use_udp_channel", &flac_cfg.stream.use_udp_channel);
+
+ decoder_ = FLAC__stream_decoder_new();
+
+ xmms_cfg_free(cfg);
+}
+
+int FLAC_XMMS__is_our_file(char *filename)
+{
+ char *ext;
+
+ ext = strrchr(filename, '.');
+ if(ext)
+ if(!strcasecmp(ext, ".flac") || !strcasecmp(ext, ".fla"))
+ return 1;
+ return 0;
+}
+
+void FLAC_XMMS__play_file(char *filename)
+{
+ FILE *f;
+
+ sample_buffer_first_ = sample_buffer_last_ = 0;
+ audio_error_ = false;
+ stream_data_.abort_flag = false;
+ stream_data_.is_playing = false;
+ stream_data_.is_http_source = is_http_source(filename);
+ stream_data_.eof = false;
+ stream_data_.play_thread_open = false;
+ stream_data_.has_replaygain = false;
+
+ if(!is_http_source(filename)) {
+ if(0 == (f = fopen(filename, "r")))
+ return;
+ fclose(f);
+ }
+
+ if(decoder_ == 0)
+ return;
+
+ if(!safe_decoder_init_(filename, decoder_))
+ return;
+
+ if(stream_data_.has_replaygain && flac_cfg.output.replaygain.enable) {
+ if(flac_cfg.output.resolution.replaygain.bps_out == 8) {
+ stream_data_.sample_format = FMT_U8;
+ stream_data_.sample_format_bytes_per_sample = 1;
+ }
+ else if(flac_cfg.output.resolution.replaygain.bps_out == 16) {
+ stream_data_.sample_format = (is_big_endian_host_) ? FMT_S16_BE : FMT_S16_LE;
+ stream_data_.sample_format_bytes_per_sample = 2;
+ }
+ else {
+ /*@@@ need some error here like wa2: MessageBox(mod_.hMainWindow, "ERROR: plugin can only handle 8/16-bit samples\n", "ERROR: plugin can only handle 8/16-bit samples", 0); */
+ fprintf(stderr, "libxmms-flac: can't handle %d bit output\n", flac_cfg.output.resolution.replaygain.bps_out);
+ safe_decoder_finish_(decoder_);
+ return;
+ }
+ }
+ else {
+ if(stream_data_.bits_per_sample == 8) {
+ stream_data_.sample_format = FMT_U8;
+ stream_data_.sample_format_bytes_per_sample = 1;
+ }
+ else if(stream_data_.bits_per_sample == 16 || (stream_data_.bits_per_sample == 24 && flac_cfg.output.resolution.normal.dither_24_to_16)) {
+ stream_data_.sample_format = (is_big_endian_host_) ? FMT_S16_BE : FMT_S16_LE;
+ stream_data_.sample_format_bytes_per_sample = 2;
+ }
+ else {
+ /*@@@ need some error here like wa2: MessageBox(mod_.hMainWindow, "ERROR: plugin can only handle 8/16-bit samples\n", "ERROR: plugin can only handle 8/16-bit samples", 0); */
+ fprintf(stderr, "libxmms-flac: can't handle %d bit output\n", stream_data_.bits_per_sample);
+ safe_decoder_finish_(decoder_);
+ return;
+ }
+ }
+ FLAC__replaygain_synthesis__init_dither_context(&stream_data_.dither_context, stream_data_.sample_format_bytes_per_sample * 8, flac_cfg.output.resolution.replaygain.noise_shaping);
+ stream_data_.is_playing = true;
+
+ if(flac_ip.output->open_audio(stream_data_.sample_format, stream_data_.sample_rate, stream_data_.channels) == 0) {
+ audio_error_ = true;
+ safe_decoder_finish_(decoder_);
+ return;
+ }
+
+ stream_data_.title = flac_format_song_title(filename);
+ flac_ip.set_info(stream_data_.title, stream_data_.length_in_msec, stream_data_.sample_rate * stream_data_.channels * stream_data_.bits_per_sample, stream_data_.sample_rate, stream_data_.channels);
+
+ stream_data_.seek_to_in_sec = -1;
+ stream_data_.play_thread_open = true;
+ pthread_create(&decode_thread_, NULL, play_loop_, NULL);
+}
+
+void FLAC_XMMS__stop(void)
+{
+ if(stream_data_.is_playing) {
+ stream_data_.is_playing = false;
+ if(stream_data_.play_thread_open) {
+ stream_data_.play_thread_open = false;
+ pthread_join(decode_thread_, NULL);
+ }
+ flac_ip.output->close_audio();
+ safe_decoder_finish_(decoder_);
+ }
+}
+
+void FLAC_XMMS__pause(short p)
+{
+ flac_ip.output->pause(p);
+}
+
+void FLAC_XMMS__seek(int time)
+{
+ if(!stream_data_.is_http_source) {
+ stream_data_.seek_to_in_sec = time;
+ stream_data_.eof = false;
+
+ while(stream_data_.seek_to_in_sec != -1)
+ xmms_usleep(10000);
+ }
+}
+
+int FLAC_XMMS__get_time(void)
+{
+ if(audio_error_)
+ return -2;
+ if(!stream_data_.is_playing || (stream_data_.eof && !flac_ip.output->buffer_playing()))
+ return -1;
+ else
+ return flac_ip.output->output_time();
+}
+
+void FLAC_XMMS__cleanup(void)
+{
+ safe_decoder_delete_(decoder_);
+ decoder_ = 0;
+}
+
+void FLAC_XMMS__get_song_info(char *filename, char **title, int *length_in_msec)
+{
+ FLAC__StreamMetadata streaminfo;
+
+ if(0 == filename)
+ filename = "";
+
+ if(!FLAC__metadata_get_streaminfo(filename, &streaminfo)) {
+ /* @@@ how to report the error? */
+ if(title) {
+ if (!is_http_source(filename)) {
+ static const char *errtitle = "Invalid FLAC File: ";
+ if(strlen(errtitle) + 1 + strlen(filename) + 1 + 1 < strlen(filename)) { /* overflow check */
+ *title = NULL;
+ }
+ else {
+ *title = g_malloc(strlen(errtitle) + 1 + strlen(filename) + 1 + 1);
+ sprintf(*title, "%s\"%s\"", errtitle, filename);
+ }
+ } else {
+ *title = NULL;
+ }
+ }
+ if(length_in_msec)
+ *length_in_msec = -1;
+ return;
+ }
+
+ if(title) {
+ *title = flac_format_song_title(filename);
+ }
+ if(length_in_msec) {
+ FLAC__uint64 l = (FLAC__uint64)((double)streaminfo.data.stream_info.total_samples / (double)streaminfo.data.stream_info.sample_rate * 1000.0 + 0.5);
+ if (l > INT_MAX)
+ l = INT_MAX;
+ *length_in_msec = (int)l;
+ }
+}
+
+/***********************************************************************
+ * local routines
+ **********************************************************************/
+
+void *play_loop_(void *arg)
+{
+ unsigned written_time_last = 0, bh_index_last_w = 0, bh_index_last_o = BITRATE_HIST_SIZE, blocksize = 1;
+ FLAC__uint64 decode_position_last = 0, decode_position_frame_last = 0, decode_position_frame = 0;
+
+ (void)arg;
+
+ while(stream_data_.is_playing) {
+ if(!stream_data_.eof) {
+ while(sample_buffer_last_ - sample_buffer_first_ < SAMPLES_PER_WRITE) {
+ unsigned s;
+
+ s = sample_buffer_last_ - sample_buffer_first_;
+ if(FLAC__stream_decoder_get_state(decoder_) == FLAC__STREAM_DECODER_END_OF_STREAM) {
+ stream_data_.eof = true;
+ break;
+ }
+ else if(!FLAC__stream_decoder_process_single(decoder_)) {
+ /*@@@ this should probably be a dialog */
+ fprintf(stderr, "libxmms-flac: READ ERROR processing frame\n");
+ stream_data_.eof = true;
+ break;
+ }
+ blocksize = sample_buffer_last_ - sample_buffer_first_ - s;
+ decode_position_frame_last = decode_position_frame;
+ if(stream_data_.is_http_source || !FLAC__stream_decoder_get_decode_position(decoder_, &decode_position_frame))
+ decode_position_frame = 0;
+ }
+ if(sample_buffer_last_ - sample_buffer_first_ > 0) {
+ const unsigned n = min(sample_buffer_last_ - sample_buffer_first_, SAMPLES_PER_WRITE);
+ int bytes = n * stream_data_.channels * stream_data_.sample_format_bytes_per_sample;
+ FLAC__byte *sample_buffer_start = sample_buffer_ + sample_buffer_first_ * stream_data_.channels * stream_data_.sample_format_bytes_per_sample;
+ unsigned written_time, bh_index_w;
+ FLAC__uint64 decode_position;
+
+ sample_buffer_first_ += n;
+ flac_ip.add_vis_pcm(flac_ip.output->written_time(), stream_data_.sample_format, stream_data_.channels, bytes, sample_buffer_start);
+ while(flac_ip.output->buffer_free() < (int)bytes && stream_data_.is_playing && stream_data_.seek_to_in_sec == -1)
+ xmms_usleep(10000);
+ if(stream_data_.is_playing && stream_data_.seek_to_in_sec == -1)
+ flac_ip.output->write_audio(sample_buffer_start, bytes);
+
+ /* compute current bitrate */
+
+ written_time = flac_ip.output->written_time();
+ bh_index_w = written_time / BITRATE_HIST_SEGMENT_MSEC % BITRATE_HIST_SIZE;
+ if(bh_index_w != bh_index_last_w) {
+ bh_index_last_w = bh_index_w;
+ decode_position = decode_position_frame - (double)(sample_buffer_last_ - sample_buffer_first_) * (double)(decode_position_frame - decode_position_frame_last) / (double)blocksize;
+ bitrate_history_[(bh_index_w + BITRATE_HIST_SIZE - 1) % BITRATE_HIST_SIZE] =
+ decode_position > decode_position_last && written_time > written_time_last ?
+ 8000 * (decode_position - decode_position_last) / (written_time - written_time_last) :
+ stream_data_.sample_rate * stream_data_.channels * stream_data_.bits_per_sample;
+ decode_position_last = decode_position;
+ written_time_last = written_time;
+ }
+ }
+ else {
+ stream_data_.eof = true;
+ xmms_usleep(10000);
+ }
+ }
+ else
+ xmms_usleep(10000);
+ if(!stream_data_.is_http_source && stream_data_.seek_to_in_sec != -1) {
+ const double distance = (double)stream_data_.seek_to_in_sec * 1000.0 / (double)stream_data_.length_in_msec;
+ FLAC__uint64 target_sample = (FLAC__uint64)(distance * (double)stream_data_.total_samples);
+ if(stream_data_.total_samples > 0 && target_sample >= stream_data_.total_samples)
+ target_sample = stream_data_.total_samples - 1;
+ if(FLAC__stream_decoder_seek_absolute(decoder_, target_sample)) {
+ flac_ip.output->flush(stream_data_.seek_to_in_sec * 1000);
+ bh_index_last_w = bh_index_last_o = flac_ip.output->output_time() / BITRATE_HIST_SEGMENT_MSEC % BITRATE_HIST_SIZE;
+ if(!FLAC__stream_decoder_get_decode_position(decoder_, &decode_position_frame))
+ decode_position_frame = 0;
+ stream_data_.eof = false;
+ sample_buffer_first_ = sample_buffer_last_ = 0;
+ }
+ else if(FLAC__stream_decoder_get_state(decoder_) == FLAC__STREAM_DECODER_SEEK_ERROR) {
+ /*@@@ this should probably be a dialog */
+ fprintf(stderr, "libxmms-flac: SEEK ERROR\n");
+ FLAC__stream_decoder_flush(decoder_);
+ stream_data_.eof = false;
+ sample_buffer_first_ = sample_buffer_last_ = 0;
+ }
+ stream_data_.seek_to_in_sec = -1;
+ }
+ else {
+ /* display the right bitrate from history */
+ unsigned bh_index_o = flac_ip.output->output_time() / BITRATE_HIST_SEGMENT_MSEC % BITRATE_HIST_SIZE;
+ if(bh_index_o != bh_index_last_o && bh_index_o != bh_index_last_w && bh_index_o != (bh_index_last_w + 1) % BITRATE_HIST_SIZE) {
+ bh_index_last_o = bh_index_o;
+ flac_ip.set_info(stream_data_.title, stream_data_.length_in_msec, bitrate_history_[bh_index_o], stream_data_.sample_rate, stream_data_.channels);
+ }
+ }
+ }
+
+ safe_decoder_finish_(decoder_);
+
+ /* are these two calls necessary? */
+ flac_ip.output->buffer_free();
+ flac_ip.output->buffer_free();
+
+ g_free(stream_data_.title);
+
+ pthread_exit(NULL);
+ return 0; /* to silence the compiler warning about not returning a value */
+}
+
+FLAC__bool safe_decoder_init_(const char *filename, FLAC__StreamDecoder *decoder)
+{
+ if(decoder == 0)
+ return false;
+
+ safe_decoder_finish_(decoder);
+
+ FLAC__stream_decoder_set_md5_checking(decoder, false);
+ FLAC__stream_decoder_set_metadata_ignore_all(decoder);
+ FLAC__stream_decoder_set_metadata_respond(decoder, FLAC__METADATA_TYPE_STREAMINFO);
+ FLAC__stream_decoder_set_metadata_respond(decoder, FLAC__METADATA_TYPE_VORBIS_COMMENT);
+ if(stream_data_.is_http_source) {
+ flac_http_open(filename, 0);
+ if(FLAC__stream_decoder_init_stream(decoder, http_read_callback_, /*seek_callback=*/0, /*tell_callback=*/0, /*length_callback=*/0, /*eof_callback=*/0, write_callback_, metadata_callback_, error_callback_, /*client_data=*/&stream_data_) != FLAC__STREAM_DECODER_INIT_STATUS_OK)
+ return false;
+ }
+ else {
+ if(FLAC__stream_decoder_init_file(decoder, filename, write_callback_, metadata_callback_, error_callback_, /*client_data=*/&stream_data_) != FLAC__STREAM_DECODER_INIT_STATUS_OK)
+ return false;
+ }
+
+ if(!FLAC__stream_decoder_process_until_end_of_metadata(decoder))
+ return false;
+
+ return true;
+}
+
+void safe_decoder_finish_(FLAC__StreamDecoder *decoder)
+{
+ if(decoder && FLAC__stream_decoder_get_state(decoder) != FLAC__STREAM_DECODER_UNINITIALIZED)
+ (void)FLAC__stream_decoder_finish(decoder);
+ if(stream_data_.is_http_source)
+ flac_http_close();
+}
+
+void safe_decoder_delete_(FLAC__StreamDecoder *decoder)
+{
+ if(decoder) {
+ safe_decoder_finish_(decoder);
+ FLAC__stream_decoder_delete(decoder);
+ }
+}
+
+FLAC__StreamDecoderReadStatus http_read_callback_(const FLAC__StreamDecoder *decoder, FLAC__byte buffer[], size_t *bytes, void *client_data)
+{
+ (void)decoder;
+ (void)client_data;
+ *bytes = flac_http_read(buffer, *bytes);
+ return *bytes ? FLAC__STREAM_DECODER_READ_STATUS_CONTINUE : FLAC__STREAM_DECODER_READ_STATUS_END_OF_STREAM;
+}
+
+FLAC__StreamDecoderWriteStatus write_callback_(const FLAC__StreamDecoder *decoder, const FLAC__Frame *frame, const FLAC__int32 * const buffer[], void *client_data)
+{
+ stream_data_struct *stream_data = (stream_data_struct *)client_data;
+ const unsigned channels = stream_data->channels, wide_samples = frame->header.blocksize;
+ const unsigned bits_per_sample = stream_data->bits_per_sample;
+ FLAC__byte *sample_buffer_start;
+
+ (void)decoder;
+
+ if(stream_data->abort_flag)
+ return FLAC__STREAM_DECODER_WRITE_STATUS_ABORT;
+
+ if((sample_buffer_last_ + wide_samples) > (SAMPLE_BUFFER_SIZE / (channels * stream_data->sample_format_bytes_per_sample))) {
+ memmove(sample_buffer_, sample_buffer_ + sample_buffer_first_ * channels * stream_data->sample_format_bytes_per_sample, (sample_buffer_last_ - sample_buffer_first_) * channels * stream_data->sample_format_bytes_per_sample);
+ sample_buffer_last_ -= sample_buffer_first_;
+ sample_buffer_first_ = 0;
+ }
+ sample_buffer_start = sample_buffer_ + sample_buffer_last_ * channels * stream_data->sample_format_bytes_per_sample;
+ if(stream_data->has_replaygain && flac_cfg.output.replaygain.enable) {
+ FLAC__replaygain_synthesis__apply_gain(
+ sample_buffer_start,
+ !is_big_endian_host_,
+ stream_data->sample_format_bytes_per_sample == 1, /* unsigned_data_out */
+ buffer,
+ wide_samples,
+ channels,
+ bits_per_sample,
+ stream_data->sample_format_bytes_per_sample * 8,
+ stream_data->replay_scale,
+ flac_cfg.output.replaygain.hard_limit,
+ flac_cfg.output.resolution.replaygain.dither,
+ &stream_data->dither_context
+ );
+ }
+ else if(is_big_endian_host_) {
+ FLAC__plugin_common__pack_pcm_signed_big_endian(
+ sample_buffer_start,
+ buffer,
+ wide_samples,
+ channels,
+ bits_per_sample,
+ stream_data->sample_format_bytes_per_sample * 8
+ );
+ }
+ else {
+ FLAC__plugin_common__pack_pcm_signed_little_endian(
+ sample_buffer_start,
+ buffer,
+ wide_samples,
+ channels,
+ bits_per_sample,
+ stream_data->sample_format_bytes_per_sample * 8
+ );
+ }
+
+ sample_buffer_last_ += wide_samples;
+
+ return FLAC__STREAM_DECODER_WRITE_STATUS_CONTINUE;
+}
+
+void metadata_callback_(const FLAC__StreamDecoder *decoder, const FLAC__StreamMetadata *metadata, void *client_data)
+{
+ stream_data_struct *stream_data = (stream_data_struct *)client_data;
+ (void)decoder;
+ if(metadata->type == FLAC__METADATA_TYPE_STREAMINFO) {
+ stream_data->total_samples = metadata->data.stream_info.total_samples;
+ stream_data->bits_per_sample = metadata->data.stream_info.bits_per_sample;
+ stream_data->channels = metadata->data.stream_info.channels;
+ stream_data->sample_rate = metadata->data.stream_info.sample_rate;
+ {
+ FLAC__uint64 l = (FLAC__uint64)((double)stream_data->total_samples / (double)stream_data->sample_rate * 1000.0 + 0.5);
+ if (l > INT_MAX)
+ l = INT_MAX;
+ stream_data->length_in_msec = (int)l;
+ }
+ }
+ else if(metadata->type == FLAC__METADATA_TYPE_VORBIS_COMMENT) {
+ double reference, gain, peak;
+ if(grabbag__replaygain_load_from_vorbiscomment(metadata, flac_cfg.output.replaygain.album_mode, /*strict=*/false, &reference, &gain, &peak)) {
+ stream_data->has_replaygain = true;
+ stream_data->replay_scale = grabbag__replaygain_compute_scale_factor(peak, gain, (double)flac_cfg.output.replaygain.preamp, /*prevent_clipping=*/!flac_cfg.output.replaygain.hard_limit);
+ }
+ }
+}
+
+void error_callback_(const FLAC__StreamDecoder *decoder, FLAC__StreamDecoderErrorStatus status, void *client_data)
+{
+ stream_data_struct *stream_data = (stream_data_struct *)client_data;
+ (void)decoder;
+ if(status != FLAC__STREAM_DECODER_ERROR_STATUS_LOST_SYNC)
+ stream_data->abort_flag = true;
+}