diff options
Diffstat (limited to '3rdparty/libflac/src/plugin_xmms/plugin.c')
-rw-r--r-- | 3rdparty/libflac/src/plugin_xmms/plugin.c | 684 |
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; +} |