537 lines
14 KiB
C
537 lines
14 KiB
C
/* the Music Player Daemon (MPD)
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* (c)2003-2006 by Warren Dukes (warren.dukes@gmail.com)
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* This project's homepage is: http://www.musicpd.org
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include "_flac_common.h"
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#ifdef HAVE_FLAC
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#include "../utils.h"
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#include "../log.h"
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#include "../pcm_utils.h"
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#include "../inputStream.h"
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#include "../outputBuffer.h"
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#include "../replayGain.h"
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#include "../audio.h"
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#include <stdio.h>
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#include <string.h>
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#include <unistd.h>
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#include <assert.h>
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/* this code was based on flac123, from flac-tools */
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static flac_read_status flacRead(const flac_decoder * flacDec,
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FLAC__byte buf[],
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unsigned *bytes,
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void *fdata)
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{
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FlacData *data = (FlacData *) fdata;
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size_t r;
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while (1) {
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r = readFromInputStream(data->inStream, (void *)buf, 1, *bytes);
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if (r == 0 && !inputStreamAtEOF(data->inStream) &&
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!data->dc->stop)
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my_usleep(10000);
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else
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break;
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}
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*bytes = r;
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if (r == 0 && !data->dc->stop) {
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if (inputStreamAtEOF(data->inStream))
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return flac_read_status_eof;
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else
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return flac_read_status_abort;
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}
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return flac_read_status_continue;
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}
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static flac_seek_status flacSeek(const flac_decoder * flacDec,
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FLAC__uint64 offset,
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void *fdata)
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{
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FlacData *data = (FlacData *) fdata;
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if (seekInputStream(data->inStream, offset, SEEK_SET) < 0) {
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return flac_seek_status_error;
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}
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return flac_tell_status_ok;
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}
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static flac_tell_status flacTell(const flac_decoder * flacDec,
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FLAC__uint64 * offset,
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void *fdata)
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{
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FlacData *data = (FlacData *) fdata;
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*offset = (long)(data->inStream->offset);
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return flac_tell_status_ok;
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}
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static flac_length_status flacLength(const flac_decoder * flacDec,
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FLAC__uint64 * length,
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void *fdata)
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{
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FlacData *data = (FlacData *) fdata;
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*length = (size_t) (data->inStream->size);
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return flac_length_status_ok;
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}
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static FLAC__bool flacEOF(const flac_decoder * flacDec, void *fdata)
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{
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FlacData *data = (FlacData *) fdata;
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if (inputStreamAtEOF(data->inStream) == 1)
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return true;
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return false;
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}
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static void flacError(const flac_decoder *dec,
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FLAC__StreamDecoderErrorStatus status, void *fdata)
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{
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flac_error_common_cb("flac", status, (FlacData *) fdata);
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}
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#if !defined(FLAC_API_VERSION_CURRENT) || FLAC_API_VERSION_CURRENT <= 7
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static void flacPrintErroredState(FLAC__SeekableStreamDecoderState state)
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{
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const char *str = ""; /* "" to silence compiler warning */
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switch (state) {
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case FLAC__SEEKABLE_STREAM_DECODER_OK:
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case FLAC__SEEKABLE_STREAM_DECODER_SEEKING:
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case FLAC__SEEKABLE_STREAM_DECODER_END_OF_STREAM:
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return;
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case FLAC__SEEKABLE_STREAM_DECODER_MEMORY_ALLOCATION_ERROR:
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str = "allocation error";
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break;
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case FLAC__SEEKABLE_STREAM_DECODER_READ_ERROR:
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str = "read error";
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break;
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case FLAC__SEEKABLE_STREAM_DECODER_SEEK_ERROR:
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str = "seek error";
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break;
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case FLAC__SEEKABLE_STREAM_DECODER_STREAM_DECODER_ERROR:
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str = "seekable stream error";
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break;
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case FLAC__SEEKABLE_STREAM_DECODER_ALREADY_INITIALIZED:
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str = "decoder already initialized";
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break;
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case FLAC__SEEKABLE_STREAM_DECODER_INVALID_CALLBACK:
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str = "invalid callback";
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break;
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case FLAC__SEEKABLE_STREAM_DECODER_UNINITIALIZED:
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str = "decoder uninitialized";
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}
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ERROR("flac %s\n", str);
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}
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static int flac_init(FLAC__SeekableStreamDecoder *dec,
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FLAC__SeekableStreamDecoderReadCallback read_cb,
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FLAC__SeekableStreamDecoderSeekCallback seek_cb,
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FLAC__SeekableStreamDecoderTellCallback tell_cb,
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FLAC__SeekableStreamDecoderLengthCallback length_cb,
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FLAC__SeekableStreamDecoderEofCallback eof_cb,
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FLAC__SeekableStreamDecoderWriteCallback write_cb,
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FLAC__SeekableStreamDecoderMetadataCallback metadata_cb,
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FLAC__SeekableStreamDecoderErrorCallback error_cb,
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void *data)
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{
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int s = 1;
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s &= FLAC__seekable_stream_decoder_set_read_callback(dec, read_cb);
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s &= FLAC__seekable_stream_decoder_set_seek_callback(dec, seek_cb);
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s &= FLAC__seekable_stream_decoder_set_tell_callback(dec, tell_cb);
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s &= FLAC__seekable_stream_decoder_set_length_callback(dec, length_cb);
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s &= FLAC__seekable_stream_decoder_set_eof_callback(dec, eof_cb);
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s &= FLAC__seekable_stream_decoder_set_write_callback(dec, write_cb);
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s &= FLAC__seekable_stream_decoder_set_metadata_callback(dec,
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metadata_cb);
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s &= FLAC__seekable_stream_decoder_set_metadata_respond(dec,
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FLAC__METADATA_TYPE_VORBIS_COMMENT);
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s &= FLAC__seekable_stream_decoder_set_error_callback(dec, error_cb);
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s &= FLAC__seekable_stream_decoder_set_client_data(dec, data);
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if (!s || (FLAC__seekable_stream_decoder_init(dec) !=
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FLAC__SEEKABLE_STREAM_DECODER_OK))
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return 0;
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return 1;
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}
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#else /* FLAC_API_VERSION_CURRENT >= 7 */
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static void flacPrintErroredState(FLAC__StreamDecoderState state)
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{
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const char *str = ""; /* "" to silence compiler warning */
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switch (state) {
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case FLAC__STREAM_DECODER_SEARCH_FOR_METADATA:
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case FLAC__STREAM_DECODER_READ_METADATA:
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case FLAC__STREAM_DECODER_SEARCH_FOR_FRAME_SYNC:
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case FLAC__STREAM_DECODER_READ_FRAME:
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case FLAC__STREAM_DECODER_END_OF_STREAM:
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return;
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case FLAC__STREAM_DECODER_OGG_ERROR:
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str = "error in the Ogg layer";
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break;
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case FLAC__STREAM_DECODER_SEEK_ERROR:
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str = "seek error";
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break;
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case FLAC__STREAM_DECODER_ABORTED:
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str = "decoder aborted by read";
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break;
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case FLAC__STREAM_DECODER_MEMORY_ALLOCATION_ERROR:
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str = "allocation error";
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break;
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case FLAC__STREAM_DECODER_UNINITIALIZED:
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str = "decoder uninitialized";
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}
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ERROR("flac %s\n", str);
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}
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#endif /* FLAC_API_VERSION_CURRENT >= 7 */
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static void flacMetadata(const flac_decoder * dec,
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const FLAC__StreamMetadata * block, void *vdata)
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{
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flac_metadata_common_cb(block, (FlacData *) vdata);
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}
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static FLAC__StreamDecoderWriteStatus flacWrite(const flac_decoder *dec,
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const FLAC__Frame * frame,
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const FLAC__int32 * const buf[],
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void *vdata)
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{
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FlacData *data = (FlacData *) vdata;
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FLAC__uint32 samples = frame->header.blocksize;
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FLAC__uint16 u16;
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unsigned char *uc;
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int c_samp, c_chan, d_samp;
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int i;
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float timeChange;
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FLAC__uint64 newPosition = 0;
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timeChange = ((float)samples) / frame->header.sample_rate;
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data->time += timeChange;
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flac_get_decode_position(dec, &newPosition);
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if (data->position) {
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data->bitRate =
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((newPosition - data->position) * 8.0 / timeChange)
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/ 1000 + 0.5;
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}
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data->position = newPosition;
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for (c_samp = d_samp = 0; c_samp < frame->header.blocksize; c_samp++) {
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for (c_chan = 0; c_chan < frame->header.channels;
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c_chan++, d_samp++) {
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u16 = buf[c_chan][c_samp];
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uc = (unsigned char *)&u16;
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for (i = 0; i < (data->dc->audioFormat.bits / 8); i++) {
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if (data->chunk_length >= FLAC_CHUNK_SIZE) {
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if (flacSendChunk(data) < 0) {
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return
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FLAC__STREAM_DECODER_WRITE_STATUS_ABORT;
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}
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data->chunk_length = 0;
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if (data->dc->seek) {
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return
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FLAC__STREAM_DECODER_WRITE_STATUS_CONTINUE;
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}
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}
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data->chunk[data->chunk_length++] = *(uc++);
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}
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}
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}
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return FLAC__STREAM_DECODER_WRITE_STATUS_CONTINUE;
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}
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static MpdTag *flacMetadataDup(char *file, int *vorbisCommentFound)
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{
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MpdTag *ret = NULL;
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FLAC__Metadata_SimpleIterator *it;
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FLAC__StreamMetadata *block = NULL;
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*vorbisCommentFound = 0;
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it = FLAC__metadata_simple_iterator_new();
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if (!FLAC__metadata_simple_iterator_init(it, file, 1, 0)) {
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switch (FLAC__metadata_simple_iterator_status(it)) {
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case FLAC__METADATA_SIMPLE_ITERATOR_STATUS_ILLEGAL_INPUT:
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DEBUG
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("flacMetadataDup: Reading '%s' metadata gave the following error: Illegal Input\n",
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file);
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break;
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case FLAC__METADATA_SIMPLE_ITERATOR_STATUS_ERROR_OPENING_FILE:
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DEBUG
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("flacMetadataDup: Reading '%s' metadata gave the following error: Error Opening File\n",
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file);
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break;
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case FLAC__METADATA_SIMPLE_ITERATOR_STATUS_NOT_A_FLAC_FILE:
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DEBUG
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("flacMetadataDup: Reading '%s' metadata gave the following error: Not A Flac File\n",
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file);
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break;
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default:
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DEBUG("flacMetadataDup: Reading '%s' metadata failed\n",
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file);
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}
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FLAC__metadata_simple_iterator_delete(it);
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return ret;
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}
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do {
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block = FLAC__metadata_simple_iterator_get_block(it);
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if (!block)
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break;
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if (block->type == FLAC__METADATA_TYPE_VORBIS_COMMENT) {
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ret = copyVorbisCommentBlockToMpdTag(block, ret);
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if (ret)
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*vorbisCommentFound = 1;
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} else if (block->type == FLAC__METADATA_TYPE_STREAMINFO) {
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if (!ret)
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ret = newMpdTag();
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ret->time = ((float)block->data.stream_info.
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total_samples) /
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block->data.stream_info.sample_rate + 0.5;
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}
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FLAC__metadata_object_delete(block);
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} while (FLAC__metadata_simple_iterator_next(it));
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FLAC__metadata_simple_iterator_delete(it);
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return ret;
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}
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static MpdTag *flacTagDup(char *file)
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{
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MpdTag *ret = NULL;
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int foundVorbisComment = 0;
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ret = flacMetadataDup(file, &foundVorbisComment);
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if (!ret) {
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DEBUG("flacTagDup: Failed to grab information from: %s\n",
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file);
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return NULL;
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}
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if (!foundVorbisComment) {
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MpdTag *temp = id3Dup(file);
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if (temp) {
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temp->time = ret->time;
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freeMpdTag(ret);
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ret = temp;
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}
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}
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return ret;
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}
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static int flac_decode_internal(OutputBuffer * cb, DecoderControl * dc,
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InputStream * inStream, int is_ogg)
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{
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flac_decoder *flacDec;
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FlacData data;
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const char *err = NULL;
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if (!(flacDec = flac_new()))
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return -1;
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init_FlacData(&data, cb, dc, inStream);
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if (is_ogg) {
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if (!flac_ogg_init(flacDec, flacRead, flacSeek, flacTell,
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flacLength, flacEOF, flacWrite, flacMetadata,
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flacError, (void *)&data)) {
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err = "doing Ogg init()";
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goto fail;
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}
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} else {
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if (!flac_init(flacDec, flacRead, flacSeek, flacTell,
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flacLength, flacEOF, flacWrite, flacMetadata,
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flacError, (void *)&data)) {
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err = "doing init()";
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goto fail;
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}
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if (!flac_process_metadata(flacDec)) {
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err = "problem reading metadata";
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goto fail;
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}
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}
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dc->state = DECODE_STATE_DECODE;
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while (1) {
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if (!flac_process_single(flacDec))
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break;
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if (flac_get_state(flacDec) == flac_decoder_eof)
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break;
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if (dc->seek) {
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FLAC__uint64 sampleToSeek = dc->seekWhere *
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dc->audioFormat.sampleRate + 0.5;
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if (flac_seek_absolute(flacDec, sampleToSeek)) {
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clearOutputBuffer(cb);
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data.time = ((float)sampleToSeek) /
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dc->audioFormat.sampleRate;
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data.position = 0;
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} else
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dc->seekError = 1;
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dc->seek = 0;
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}
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}
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if (!dc->stop) {
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flacPrintErroredState(flac_get_state(flacDec));
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flac_finish(flacDec);
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}
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/* send last little bit */
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if (data.chunk_length > 0 && !dc->stop) {
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flacSendChunk(&data);
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flushOutputBuffer(data.cb);
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}
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/*if(dc->seek) {
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dc->seekError = 1;
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dc->seek = 0;
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} */
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dc->state = DECODE_STATE_STOP;
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dc->stop = 0;
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fail:
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if (data.replayGainInfo)
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freeReplayGainInfo(data.replayGainInfo);
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if (flacDec)
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flac_delete(flacDec);
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closeInputStream(inStream);
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if (err) {
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ERROR("flac %s\n", err);
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return -1;
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}
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return 0;
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}
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static int flac_decode(OutputBuffer * cb, DecoderControl * dc,
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InputStream * inStream)
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{
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return flac_decode_internal(cb, dc, inStream, 0);
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}
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#if !defined(FLAC_API_VERSION_CURRENT) || FLAC_API_VERSION_CURRENT <= 7
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# define flac_plugin_init NULL
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#else /* FLAC_API_VERSION_CURRENT >= 7 */
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/* some of this stuff is duplicated from oggflac_plugin.c */
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extern InputPlugin oggflacPlugin;
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static MpdTag *oggflac_tag_dup(char *file)
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{
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MpdTag *ret = NULL;
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FLAC__Metadata_Iterator *it;
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FLAC__StreamMetadata *block;
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FLAC__Metadata_Chain *chain = FLAC__metadata_chain_new();
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if (!(FLAC__metadata_chain_read_ogg(chain, file)))
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goto out;
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it = FLAC__metadata_iterator_new();
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FLAC__metadata_iterator_init(it, chain);
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do {
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if (!(block = FLAC__metadata_iterator_get_block(it)))
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break;
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if (block->type == FLAC__METADATA_TYPE_VORBIS_COMMENT) {
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ret = copyVorbisCommentBlockToMpdTag(block, ret);
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} else if (block->type == FLAC__METADATA_TYPE_STREAMINFO) {
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if (!ret)
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ret = newMpdTag();
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ret->time = ((float)block->data.stream_info.
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total_samples) /
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block->data.stream_info.sample_rate + 0.5;
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}
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} while (FLAC__metadata_iterator_next(it));
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FLAC__metadata_iterator_delete(it);
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out:
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FLAC__metadata_chain_delete(chain);
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return ret;
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}
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static int oggflac_decode(OutputBuffer * cb, DecoderControl * dc,
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InputStream * inStream)
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{
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return flac_decode_internal(cb, dc, inStream, 1);
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}
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static unsigned int oggflac_try_decode(InputStream * inStream)
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{
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return (ogg_stream_type_detect(inStream) == FLAC) ? 1 : 0;
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}
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static char *oggflac_suffixes[] = { "ogg", NULL };
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static char *oggflac_mime_types[] = { "audio/x-flac+ogg", NULL };
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static int flac_plugin_init(void)
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{
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if (!FLAC_API_SUPPORTS_OGG_FLAC) {
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DEBUG("libFLAC does not support OggFLAC\n");
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return 1;
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}
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DEBUG("libFLAC supports OggFLAC, initializing OggFLAC support\n");
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assert(oggflacPlugin.name == NULL);
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oggflacPlugin.name = "oggflac";
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oggflacPlugin.tryDecodeFunc = oggflac_try_decode;
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oggflacPlugin.streamDecodeFunc = oggflac_decode;
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oggflacPlugin.tagDupFunc = oggflac_tag_dup;
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oggflacPlugin.streamTypes = INPUT_PLUGIN_STREAM_URL |
|
|
INPUT_PLUGIN_STREAM_FILE;
|
|
oggflacPlugin.suffixes = oggflac_suffixes;
|
|
oggflacPlugin.mimeTypes = oggflac_mime_types;
|
|
loadInputPlugin(&oggflacPlugin);
|
|
return 1;
|
|
}
|
|
|
|
#endif /* FLAC_API_VERSION_CURRENT >= 7 */
|
|
|
|
static char *flacSuffixes[] = { "flac", NULL };
|
|
static char *flac_mime_types[] = { "audio/x-flac", NULL };
|
|
|
|
InputPlugin flacPlugin = {
|
|
"flac",
|
|
flac_plugin_init,
|
|
NULL,
|
|
NULL,
|
|
flac_decode,
|
|
NULL,
|
|
flacTagDup,
|
|
INPUT_PLUGIN_STREAM_URL | INPUT_PLUGIN_STREAM_FILE,
|
|
flacSuffixes,
|
|
flac_mime_types
|
|
};
|
|
|
|
#else /* !HAVE_FLAC */
|
|
|
|
InputPlugin flacPlugin = {
|
|
NULL,
|
|
NULL,
|
|
NULL,
|
|
NULL,
|
|
NULL,
|
|
NULL,
|
|
NULL,
|
|
0,
|
|
NULL,
|
|
NULL,
|
|
};
|
|
|
|
#endif /* HAVE_FLAC */
|