diff options
Diffstat (limited to '3rdparty/libflac/src/plugin_winamp2/playback.c')
-rw-r--r-- | 3rdparty/libflac/src/plugin_winamp2/playback.c | 307 |
1 files changed, 0 insertions, 307 deletions
diff --git a/3rdparty/libflac/src/plugin_winamp2/playback.c b/3rdparty/libflac/src/plugin_winamp2/playback.c deleted file mode 100644 index 99de9e63f89..00000000000 --- a/3rdparty/libflac/src/plugin_winamp2/playback.c +++ /dev/null @@ -1,307 +0,0 @@ -/* in_flac - Winamp2 FLAC input plugin - * Copyright (C) 2000,2001,2002,2003,2004,2005,2006,2007 Josh Coalson - * - * This library is free software; you can redistribute it and/or - * modify it under the terms of the GNU Lesser General Public - * License as published by the Free Software Foundation; either - * version 2.1 of the License, or (at your option) any later version. - * - * This library 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 - * Lesser General Public License for more details. - * - * You should have received a copy of the GNU Lesser General Public - * License along with this library; if not, write to the Free Software - * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA - */ - -#if HAVE_CONFIG_H -# include <config.h> -#endif - -#include <limits.h> /* for INT_MAX */ -#include <stdlib.h> -#include <string.h> /* for memmove() */ -#include "playback.h" -#include "share/grabbag.h" - - -static FLAC__int32 reservoir_[FLAC_PLUGIN__MAX_SUPPORTED_CHANNELS][FLAC__MAX_BLOCK_SIZE * 2/*for overflow*/]; -static FLAC__int32 *reservoir__[FLAC_PLUGIN__MAX_SUPPORTED_CHANNELS] = { reservoir_[0], reservoir_[1] }; /*@@@ kind of a hard-coded hack */ -static unsigned wide_samples_in_reservoir_; -static output_config_t cfg; /* local copy */ - -static unsigned bh_index_last_w, bh_index_last_o, written_time_last; -static FLAC__int64 decode_position, decode_position_last; - -/* - * callbacks - */ - -static 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; - unsigned channel; - - (void)decoder; - - if (stream_data->abort_flag) - return FLAC__STREAM_DECODER_WRITE_STATUS_ABORT; - - for (channel = 0; channel < channels; channel++) - memcpy(&reservoir_[channel][wide_samples_in_reservoir_], buffer[channel], sizeof(buffer[0][0]) * wide_samples); - - wide_samples_in_reservoir_ += wide_samples; - - return FLAC__STREAM_DECODER_WRITE_STATUS_CONTINUE; -} - -static 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; - - if (stream_data->bits_per_sample!=8 && stream_data->bits_per_sample!=16 && stream_data->bits_per_sample!=24) - { - FLAC_plugin__show_error("This plugin can only handle 8/16/24-bit samples."); - stream_data->abort_flag = true; - return; - } - - { - /* with VC++ you have to spoon feed it the casting from uint64->int64->double */ - FLAC__uint64 l = (FLAC__uint64)((double)(FLAC__int64)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, cfg.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)cfg.replaygain.preamp, !cfg.replaygain.hard_limit); - } - } -} - -static 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 (cfg.misc.stop_err || status!=FLAC__STREAM_DECODER_ERROR_STATUS_LOST_SYNC) - stream_data->abort_flag = true; -} - -/* - * init/delete - */ - -FLAC__bool FLAC_plugin__decoder_init(FLAC__StreamDecoder *decoder, const char *filename, FLAC__int64 filesize, stream_data_struct *stream_data, output_config_t *config) -{ - FLAC__StreamDecoderInitStatus init_status; - - FLAC__ASSERT(decoder); - FLAC_plugin__decoder_finish(decoder); - /* init 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 ((init_status = FLAC__stream_decoder_init_file(decoder, filename, write_callback, metadata_callback, error_callback, /*client_data=*/stream_data)) != FLAC__STREAM_DECODER_INIT_STATUS_OK) - { - FLAC_plugin__show_error("Error while initializing decoder (%s [%s]).", FLAC__StreamDecoderInitStatusString[init_status], FLAC__stream_decoder_get_resolved_state_string(decoder)); - return false; - } - /* process */ - cfg = *config; - wide_samples_in_reservoir_ = 0; - stream_data->is_playing = false; - stream_data->abort_flag = false; - stream_data->has_replaygain = false; - - if (!FLAC__stream_decoder_process_until_end_of_metadata(decoder)) - { - FLAC_plugin__show_error("Error while processing metadata (%s).", FLAC__stream_decoder_get_resolved_state_string(decoder)); - return false; - } - /* check results */ - if (stream_data->abort_flag) return false; /* metadata callback already popped up the error dialog */ - /* init replaygain */ - stream_data->output_bits_per_sample = stream_data->has_replaygain && cfg.replaygain.enable ? - cfg.resolution.replaygain.bps_out : - cfg.resolution.normal.dither_24_to_16 ? min(stream_data->bits_per_sample, 16) : stream_data->bits_per_sample; - - if (stream_data->has_replaygain && cfg.replaygain.enable && cfg.resolution.replaygain.dither) - FLAC__replaygain_synthesis__init_dither_context(&stream_data->dither_context, stream_data->bits_per_sample, cfg.resolution.replaygain.noise_shaping); - /* more inits */ - stream_data->eof = false; - stream_data->seek_to = -1; - stream_data->is_playing = true; - stream_data->average_bps = (unsigned)(filesize / (125.*(double)(FLAC__int64)stream_data->total_samples/(double)stream_data->sample_rate)); - - bh_index_last_w = 0; - bh_index_last_o = BITRATE_HIST_SIZE; - decode_position = 0; - decode_position_last = 0; - written_time_last = 0; - - return true; -} - -void FLAC_plugin__decoder_finish(FLAC__StreamDecoder *decoder) -{ - if (decoder && FLAC__stream_decoder_get_state(decoder) != FLAC__STREAM_DECODER_UNINITIALIZED) - (void)FLAC__stream_decoder_finish(decoder); -} - -void FLAC_plugin__decoder_delete(FLAC__StreamDecoder *decoder) -{ - if (decoder) - { - FLAC_plugin__decoder_finish(decoder); - FLAC__stream_decoder_delete(decoder); - } -} - -/* - * decode - */ - -int FLAC_plugin__seek(FLAC__StreamDecoder *decoder, stream_data_struct *stream_data) -{ - int pos; - FLAC__uint64 target_sample = stream_data->total_samples * stream_data->seek_to / stream_data->length_in_msec; - - if (stream_data->total_samples > 0 && target_sample >= stream_data->total_samples && target_sample > 0) - target_sample = stream_data->total_samples - 1; - - /* even if the seek fails we have to reset these so that we don't repeat the seek */ - stream_data->seek_to = -1; - stream_data->eof = false; - wide_samples_in_reservoir_ = 0; - pos = (int)(target_sample*1000 / stream_data->sample_rate); - - if (!FLAC__stream_decoder_seek_absolute(decoder, target_sample)) { - if(FLAC__stream_decoder_get_state(decoder) == FLAC__STREAM_DECODER_SEEK_ERROR) - FLAC__stream_decoder_flush(decoder); - pos = -1; - } - - bh_index_last_o = bh_index_last_w = (pos/BITRATE_HIST_SEGMENT_MSEC) % BITRATE_HIST_SIZE; - if (!FLAC__stream_decoder_get_decode_position(decoder, &decode_position)) - decode_position = 0; - - return pos; -} - -unsigned FLAC_plugin__decode(FLAC__StreamDecoder *decoder, stream_data_struct *stream_data, char *sample_buffer) -{ - /* fill reservoir */ - while (wide_samples_in_reservoir_ < SAMPLES_PER_WRITE) - { - 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)) - { - FLAC_plugin__show_error("Error while processing frame (%s).", FLAC__stream_decoder_get_resolved_state_string(decoder)); - stream_data->eof = true; - break; - } - if (!FLAC__stream_decoder_get_decode_position(decoder, &decode_position)) - decode_position = 0; - } - /* output samples */ - if (wide_samples_in_reservoir_ > 0) - { - const unsigned n = min(wide_samples_in_reservoir_, SAMPLES_PER_WRITE); - const unsigned channels = stream_data->channels; - unsigned i; - int bytes; - - if (cfg.replaygain.enable && stream_data->has_replaygain) - { - bytes = FLAC__replaygain_synthesis__apply_gain( - sample_buffer, - true, /* little_endian_data_out */ - stream_data->output_bits_per_sample == 8, /* unsigned_data_out */ - reservoir__, - n, - channels, - stream_data->bits_per_sample, - stream_data->output_bits_per_sample, - stream_data->replay_scale, - cfg.replaygain.hard_limit, - cfg.resolution.replaygain.dither, - &stream_data->dither_context - ); - } - else - { - bytes = FLAC__plugin_common__pack_pcm_signed_little_endian( - sample_buffer, - reservoir__, - n, - channels, - stream_data->bits_per_sample, - stream_data->output_bits_per_sample - ); - } - - wide_samples_in_reservoir_ -= n; - for (i = 0; i < channels; i++) - memmove(&reservoir_[i][0], &reservoir_[i][n], sizeof(reservoir_[0][0]) * wide_samples_in_reservoir_); - - return bytes; - } - else - { - stream_data->eof = true; - return 0; - } -} - -int FLAC_plugin__get_rate(unsigned written_time, unsigned output_time, stream_data_struct *stream_data) -{ - static int bitrate_history_[BITRATE_HIST_SIZE]; - unsigned bh_index_w = (written_time/BITRATE_HIST_SEGMENT_MSEC) % BITRATE_HIST_SIZE; - unsigned bh_index_o = (output_time/BITRATE_HIST_SEGMENT_MSEC) % BITRATE_HIST_SIZE; - - /* written bitrate */ - if (bh_index_w != bh_index_last_w) - { - bitrate_history_[(bh_index_w + BITRATE_HIST_SIZE-1)%BITRATE_HIST_SIZE] = - decode_position>decode_position_last && written_time > written_time_last ? - (unsigned)(8000*(decode_position - decode_position_last)/(written_time - written_time_last)) : - stream_data->average_bps; - - bh_index_last_w = bh_index_w; - written_time_last = written_time; - decode_position_last = decode_position; - } - - /* output bitrate */ - if (bh_index_o!=bh_index_last_o && bh_index_o!=bh_index_last_w) - { - bh_index_last_o = bh_index_o; - return bitrate_history_[bh_index_o]; - } - - return 0; -} |