summaryrefslogtreecommitdiffstatshomepage
path: root/3rdparty/libflac/src/plugin_winamp2/playback.c
diff options
context:
space:
mode:
Diffstat (limited to '3rdparty/libflac/src/plugin_winamp2/playback.c')
-rw-r--r--3rdparty/libflac/src/plugin_winamp2/playback.c307
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;
-}