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Diffstat (limited to 'src/decoder/FlacCommon.cxx')
| -rw-r--r-- | src/decoder/FlacCommon.cxx | 194 |
1 files changed, 0 insertions, 194 deletions
diff --git a/src/decoder/FlacCommon.cxx b/src/decoder/FlacCommon.cxx deleted file mode 100644 index e4b906c12..000000000 --- a/src/decoder/FlacCommon.cxx +++ /dev/null @@ -1,194 +0,0 @@ -/* - * Copyright (C) 2003-2013 The Music Player Daemon Project - * http://www.musicpd.org - * - * 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., - * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. - */ - -/* - * Common data structures and functions used by FLAC and OggFLAC - */ - -#include "config.h" -#include "FlacCommon.hxx" -#include "FlacMetadata.hxx" -#include "FlacPcm.hxx" -#include "MixRampInfo.hxx" -#include "CheckAudioFormat.hxx" -#include "util/Error.hxx" -#include "util/Domain.hxx" -#include "Log.hxx" - -#include <assert.h> - -flac_data::flac_data(Decoder &_decoder, - InputStream &_input_stream) - :FlacInput(_input_stream, &_decoder), - initialized(false), unsupported(false), - total_frames(0), first_frame(0), next_frame(0), position(0), - decoder(_decoder), input_stream(_input_stream) -{ -} - -static SampleFormat -flac_sample_format(unsigned bits_per_sample) -{ - switch (bits_per_sample) { - case 8: - return SampleFormat::S8; - - case 16: - return SampleFormat::S16; - - case 24: - return SampleFormat::S24_P32; - - case 32: - return SampleFormat::S32; - - default: - return SampleFormat::UNDEFINED; - } -} - -static void -flac_got_stream_info(struct flac_data *data, - const FLAC__StreamMetadata_StreamInfo *stream_info) -{ - if (data->initialized || data->unsupported) - return; - - Error error; - if (!audio_format_init_checked(data->audio_format, - stream_info->sample_rate, - flac_sample_format(stream_info->bits_per_sample), - stream_info->channels, error)) { - LogError(error); - data->unsupported = true; - return; - } - - data->frame_size = data->audio_format.GetFrameSize(); - - if (data->total_frames == 0) - data->total_frames = stream_info->total_samples; - - data->initialized = true; -} - -void flac_metadata_common_cb(const FLAC__StreamMetadata * block, - struct flac_data *data) -{ - if (data->unsupported) - return; - - ReplayGainInfo rgi; - - switch (block->type) { - case FLAC__METADATA_TYPE_STREAMINFO: - flac_got_stream_info(data, &block->data.stream_info); - break; - - case FLAC__METADATA_TYPE_VORBIS_COMMENT: - if (flac_parse_replay_gain(rgi, block)) - decoder_replay_gain(data->decoder, &rgi); - - decoder_mixramp(data->decoder, flac_parse_mixramp(block)); - - flac_vorbis_comments_to_tag(data->tag, - &block->data.vorbis_comment); - - default: - break; - } -} - -/** - * This function attempts to call decoder_initialized() in case there - * was no STREAMINFO block. This is allowed for nonseekable streams, - * where the server sends us only a part of the file, without - * providing the STREAMINFO block from the beginning of the file - * (e.g. when seeking with SqueezeBox Server). - */ -static bool -flac_got_first_frame(struct flac_data *data, const FLAC__FrameHeader *header) -{ - if (data->unsupported) - return false; - - Error error; - if (!audio_format_init_checked(data->audio_format, - header->sample_rate, - flac_sample_format(header->bits_per_sample), - header->channels, error)) { - LogError(error); - data->unsupported = true; - return false; - } - - data->frame_size = data->audio_format.GetFrameSize(); - - decoder_initialized(data->decoder, data->audio_format, - data->input_stream.seekable, - (float)data->total_frames / - (float)data->audio_format.sample_rate); - - data->initialized = true; - - return true; -} - -FLAC__StreamDecoderWriteStatus -flac_common_write(struct flac_data *data, const FLAC__Frame * frame, - const FLAC__int32 *const buf[], - FLAC__uint64 nbytes) -{ - void *buffer; - unsigned bit_rate; - - if (!data->initialized && !flac_got_first_frame(data, &frame->header)) - return FLAC__STREAM_DECODER_WRITE_STATUS_ABORT; - - size_t buffer_size = frame->header.blocksize * data->frame_size; - buffer = data->buffer.Get(buffer_size); - - flac_convert(buffer, frame->header.channels, - data->audio_format.format, buf, - 0, frame->header.blocksize); - - if (nbytes > 0) - bit_rate = nbytes * 8 * frame->header.sample_rate / - (1000 * frame->header.blocksize); - else - bit_rate = 0; - - auto cmd = decoder_data(data->decoder, data->input_stream, - buffer, buffer_size, - bit_rate); - data->next_frame += frame->header.blocksize; - switch (cmd) { - case DecoderCommand::NONE: - case DecoderCommand::START: - break; - - case DecoderCommand::STOP: - return FLAC__STREAM_DECODER_WRITE_STATUS_ABORT; - - case DecoderCommand::SEEK: - return FLAC__STREAM_DECODER_WRITE_STATUS_CONTINUE; - } - - return FLAC__STREAM_DECODER_WRITE_STATUS_CONTINUE; -} |