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Diffstat (limited to '')
| -rw-r--r-- | src/decoder/_flac_common.c | 228 |
1 files changed, 0 insertions, 228 deletions
diff --git a/src/decoder/_flac_common.c b/src/decoder/_flac_common.c deleted file mode 100644 index d7f0c4a8a..000000000 --- a/src/decoder/_flac_common.c +++ /dev/null @@ -1,228 +0,0 @@ -/* - * Copyright (C) 2003-2011 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 "_flac_common.h" -#include "flac_metadata.h" -#include "flac_pcm.h" -#include "audio_check.h" - -#include <glib.h> - -#include <assert.h> - -void -flac_data_init(struct flac_data *data, struct decoder * decoder, - struct input_stream *input_stream) -{ - pcm_buffer_init(&data->buffer); - - data->unsupported = false; - data->initialized = false; - data->total_frames = 0; - data->first_frame = 0; - data->next_frame = 0; - - data->position = 0; - data->decoder = decoder; - data->input_stream = input_stream; - data->tag = NULL; -} - -void -flac_data_deinit(struct flac_data *data) -{ - pcm_buffer_deinit(&data->buffer); - - if (data->tag != NULL) - tag_free(data->tag); -} - -static enum sample_format -flac_sample_format(unsigned bits_per_sample) -{ - switch (bits_per_sample) { - case 8: - return SAMPLE_FORMAT_S8; - - case 16: - return SAMPLE_FORMAT_S16; - - case 24: - return SAMPLE_FORMAT_S24_P32; - - case 32: - return SAMPLE_FORMAT_S32; - - default: - return SAMPLE_FORMAT_UNDEFINED; - } -} - -static void -flac_got_stream_info(struct flac_data *data, - const FLAC__StreamMetadata_StreamInfo *stream_info) -{ - if (data->initialized || data->unsupported) - return; - - GError *error = NULL; - if (!audio_format_init_checked(&data->audio_format, - stream_info->sample_rate, - flac_sample_format(stream_info->bits_per_sample), - stream_info->channels, &error)) { - g_warning("%s", error->message); - g_error_free(error); - data->unsupported = true; - return; - } - - data->frame_size = audio_format_frame_size(&data->audio_format); - - 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; - - struct replay_gain_info rgi; - char *mixramp_start; - char *mixramp_end; - float replay_gain_db = 0; - - 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)) - replay_gain_db = decoder_replay_gain(data->decoder, &rgi); - - if (flac_parse_mixramp(&mixramp_start, &mixramp_end, block)) - decoder_mixramp(data->decoder, replay_gain_db, - mixramp_start, mixramp_end); - - if (data->tag != NULL) - flac_vorbis_comments_to_tag(data->tag, NULL, - &block->data.vorbis_comment); - - default: - break; - } -} - -void flac_error_common_cb(const FLAC__StreamDecoderErrorStatus status, - struct flac_data *data) -{ - if (decoder_get_command(data->decoder) == DECODE_COMMAND_STOP) - return; - - g_warning("%s", FLAC__StreamDecoderErrorStatusString[status]); -} - -/** - * 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; - - GError *error = NULL; - if (!audio_format_init_checked(&data->audio_format, - header->sample_rate, - flac_sample_format(header->bits_per_sample), - header->channels, &error)) { - g_warning("%s", error->message); - g_error_free(error); - data->unsupported = true; - return false; - } - - data->frame_size = audio_format_frame_size(&data->audio_format); - - 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) -{ - enum decoder_command cmd; - 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 = pcm_buffer_get(&data->buffer, 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; - - cmd = decoder_data(data->decoder, data->input_stream, - buffer, buffer_size, - bit_rate); - data->next_frame += frame->header.blocksize; - switch (cmd) { - case DECODE_COMMAND_NONE: - case DECODE_COMMAND_START: - break; - - case DECODE_COMMAND_STOP: - return FLAC__STREAM_DECODER_WRITE_STATUS_ABORT; - - case DECODE_COMMAND_SEEK: - return FLAC__STREAM_DECODER_WRITE_STATUS_CONTINUE; - } - - return FLAC__STREAM_DECODER_WRITE_STATUS_CONTINUE; -} |