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our current experimental Neutrino branch
git-svn-id: file:///home/bas/coolstream_public_svn/THIRDPARTY/applications/neutrino-experimental@27 e54a6e83-5905-42d5-8d5c-058d10e6a962
Origin commit data
------------------
Branch: ni/coolstream
Commit: bc5bd4154e
Author: mrcolor <mrcolor@e54a6e83-5905-42d5-8d5c-058d10e6a962>
Date: 2009-12-08 (Tue, 08 Dec 2009)
------------------
This commit was generated by Migit
This commit is contained in:
mrcolor
348
src/driver/audiodec/oggdec.cpp
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348
src/driver/audiodec/oggdec.cpp
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/*
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Neutrino-GUI - DBoxII-Project
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Copyright (C) 2004 Sania, Zwen
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Homepage: http://www.dbox2.info/
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Kommentar:
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ogg vorbis audio decoder
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uses tremor libvorbisidec
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License: GPL
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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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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., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#ifdef HAVE_CONFIG_H
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#include <config.h>
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#endif
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#include <errno.h>
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#include <oggdec.h>
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#include <linux/soundcard.h>
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#include <algorithm>
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#include <sstream>
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#include <driver/netfile.h>
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#include <audio_cs.h>
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extern cAudio * audioDecoder;
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#define ProgName "OggDec"
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// nr of msecs to skip in ff/rev mode
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#define MSECS_TO_SKIP 3000
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// nr of msecs to play in ff/rev mode
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#define MSECS_TO_PLAY 200
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/* at first, define our own callback functions used in */
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/* tremor to access the data. These functions are simple mappers */
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size_t ogg_read(void *buf, size_t size, size_t nmemb, void *data)
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{
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return fread(buf, size, nmemb, (FILE*)data);
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}
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int ogg_seek(void *data, ogg_int64_t offset, int whence)
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{
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return fseek((FILE*)data, (long)offset, whence);
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}
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int ogg_close(void *data)
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{
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return 0;
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}
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long ogg_tell(void *data)
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{
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return ftell((FILE*)data);
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}
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#define PCMBUFFER 4096 //4096 max for libtremor
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#define MAX_OUTPUT_SAMPLES 2048 /* AVIA_GT_PCM_MAX_SAMPLES-1 */
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CBaseDec::RetCode COggDec::Decoder(FILE *in, const int OutputFd, State* const state, CAudioMetaData* meta_data, time_t* const time_played, unsigned int* const secondsToSkip)
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{
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OggVorbis_File vf;
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int bitstream, rval;
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ogg_int64_t jumptime=0;
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Status=OK;
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mOutputFd = OutputFd;
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mState = state;
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mTimePlayed=time_played;
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if (!Open(in, &vf))
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{
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Status=DATA_ERR;
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return Status;
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}
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SetMetaData(&vf, meta_data);
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audioDecoder->PrepareClipPlay(ov_info(&vf,0)->channels, ov_info(&vf,0)->rate, 16, 1);
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/* up and away ... */
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mSlotSize = MAX_OUTPUT_SAMPLES * 2 * ov_info(&vf,0)->channels;
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for(int i = 0 ; i < DECODE_SLOTS ; i++)
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{
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if ((mPcmSlots[i] = (char*) malloc(mSlotSize)) == NULL)
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{
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for (int j = i - 1; j >= 0; j--)
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{
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free(mPcmSlots[j]);
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}
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Status=INTERNAL_ERR;
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return Status;
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}
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mSlotTime[i]=0;
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}
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mReadSlot=mWriteSlot=0;
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pthread_t OutputThread;
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if (pthread_create (&OutputThread, 0, OutputDsp, (void *) this) != 0 )
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{
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for(int i = 0 ; i < DECODE_SLOTS ; i++)
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free(mPcmSlots[i]);
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Status=INTERNAL_ERR;
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return Status;
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}
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int bytes;
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State oldstate=*state;
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do
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{
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// clear buffer on state change
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if(oldstate!=*state)
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{
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if(*state!=PAUSE && (*state!=PLAY || oldstate!=PAUSE))
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{
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mWriteSlot=mReadSlot=0;
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oldstate=*state;
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}
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}
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while((mWriteSlot+1)%DECODE_SLOTS == mReadSlot)
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{
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usleep(10000);
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}
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bytes=0;
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if(mSeekable)
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#ifdef DBOX
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mSlotTime[mWriteSlot] = ov_time_tell(&vf);
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#else
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mSlotTime[mWriteSlot] = (ogg_int64_t)(1000 * ov_time_tell(&vf));
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#endif
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do
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{
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#ifdef DBOX
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rval = ov_read(&vf, mPcmSlots[mWriteSlot]+bytes, mSlotSize-bytes, &bitstream);
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#else
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rval = ov_read(&vf, mPcmSlots[mWriteSlot]+bytes, mSlotSize-bytes, 0, 2, 1, &bitstream);
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#endif
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bytes+=rval;
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//printf("Ogg: read buf 0x%x size %d / %d done %d\n", mPcmSlots[mWriteSlot]+bytes, rval, mSlotSize, bytes);
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} while (rval > 0 && bytes !=mSlotSize);
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//printf("\n");
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int actMSecsToSkip = (*secondsToSkip != 0) ? *secondsToSkip * 1000 : MSECS_TO_SKIP;
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if((*state==FF || *state==REV) && mSeekable )
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{
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if((std::abs((long int)( mSlotTime[mWriteSlot]-jumptime))) > MSECS_TO_PLAY)
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{
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if(*state==FF)
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{
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ov_time_seek_page(&vf, mSlotTime[mWriteSlot] + actMSecsToSkip);
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jumptime=mSlotTime[mWriteSlot]+actMSecsToSkip;
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}
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else
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{
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if(mSlotTime[mWriteSlot] < actMSecsToSkip)
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{
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ov_time_seek(&vf, 0);
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*state=PLAY;
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}
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else
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{
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ov_time_seek_page(&vf, mSlotTime[mWriteSlot] - actMSecsToSkip);
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jumptime=mSlotTime[mWriteSlot]-actMSecsToSkip;
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}
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}
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}
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if (*secondsToSkip != 0) {
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*state=PLAY;
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}
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}
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if(bytes == mSlotSize)
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mWriteSlot=(mWriteSlot+1) % DECODE_SLOTS;
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} while (rval != 0 && *state!=STOP_REQ && Status==OK);
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//printf("COggDec::Decoder: read loop stop, rval %d state %d status %d\n", rval, *state, Status);
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// let buffer run dry
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while(rval==0 && *state!=STOP_REQ && Status==OK && mReadSlot != mWriteSlot)
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usleep(100000);
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//pthread_cancel(OutputThread);
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//printf("COggDec::Decoder: OutputThread join\n");
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Status = WRITE_ERR;
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pthread_join(OutputThread, NULL);
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//printf("COggDec::Decoder: OutputThread join done\n");
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audioDecoder->StopClip();
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for(int i = 0 ; i < DECODE_SLOTS ; i++)
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free(mPcmSlots[i]);
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/* clean up the junk from the party */
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ov_clear(&vf);
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/* and drive home ;) */
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return Status;
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}
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void* COggDec::OutputDsp(void * arg)
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{
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COggDec* dec = (COggDec*) arg;
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while(dec->Status == OK/*true*/)
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{
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while(dec->mReadSlot==dec->mWriteSlot || *dec->mState==PAUSE)
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{
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if(dec->Status != OK)
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return NULL;
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usleep(10000);
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}
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//if (write(dec->mOutputFd, dec->mPcmSlots[dec->mReadSlot], dec->mSlotSize) != dec->mSlotSize)
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if (audioDecoder->WriteClip((unsigned char *)dec->mPcmSlots[dec->mReadSlot], dec->mSlotSize) != dec->mSlotSize)
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{
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fprintf(stderr,"%s: PCM write error (%s).\n", ProgName, strerror(errno));
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dec->Status=WRITE_ERR;
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break;
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}
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*dec->mTimePlayed = (int)(dec->mSlotTime[dec->mReadSlot]/1000);
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dec->mReadSlot=(dec->mReadSlot+1)%DECODE_SLOTS;
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}
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return NULL;
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}
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bool COggDec::GetMetaData(FILE *in, const bool nice, CAudioMetaData* m)
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{
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OggVorbis_File vf;
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if (!Open(in, &vf))
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{
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return false;
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}
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SetMetaData(&vf, m);
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ov_clear(&vf);
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return true;
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}
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COggDec* COggDec::getInstance()
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{
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static COggDec* OggDec = NULL;
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if(OggDec == NULL)
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{
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OggDec = new COggDec();
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}
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return OggDec;
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}
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void COggDec::ParseUserComments(vorbis_comment* vc, CAudioMetaData* m)
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{
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for(int i=0; i < vc->comments ; i++)
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{
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char* search;
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if((search=strstr(vc->user_comments[i],"Artist"))!=NULL ||
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(search=strstr(vc->user_comments[i],"ARTIST"))!=NULL)
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m->artist = search+7;
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else if((search=strstr(vc->user_comments[i],"Album"))!=NULL ||
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(search=strstr(vc->user_comments[i],"ALBUM"))!=NULL)
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m->album = search+6;
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else if((search=strstr(vc->user_comments[i],"Title"))!=NULL ||
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(search=strstr(vc->user_comments[i],"TITLE"))!=NULL)
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m->title = search+6;
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else if((search=strstr(vc->user_comments[i],"Genre"))!=NULL ||
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(search=strstr(vc->user_comments[i],"GENRE"))!=NULL)
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m->genre = search+6;
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else if((search=strstr(vc->user_comments[i],"Date"))!=NULL ||
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(search=strstr(vc->user_comments[i],"DATE"))!=NULL)
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m->date = search+5;
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else if((search=strstr(vc->user_comments[i],"TrackNumber"))!=NULL ||
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(search=strstr(vc->user_comments[i],"TRACKNUMBER"))!=NULL)
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m->track = search+12;
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}
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}
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void COggDec::SetMetaData(OggVorbis_File* vf, CAudioMetaData* m)
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{
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/* Set Metadata */
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m->type = CAudioMetaData::OGG;
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m->bitrate = ov_info(vf,0)->bitrate_nominal;
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m->samplerate = ov_info(vf,0)->rate;
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if(mSeekable)
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#ifdef DBOX
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m->total_time = (time_t) ov_time_total(vf, 0) / 1000;
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#else
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m->total_time = (time_t) ov_time_total(vf, 0);
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#endif
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std::stringstream ss;
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ss << "OGG V." << ov_info(vf,0)->version << " / " << ov_info(vf,0)->channels << "channel(s)";
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m->type_info = ss.str();
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ParseUserComments(ov_comment(vf, 0), m);
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m->changed=true;
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}
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bool COggDec::Open(FILE* in, OggVorbis_File* vf)
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{
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int rval;
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ov_callbacks cb;
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/* we need to use our own functions, because we have */
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/* the netfile layer hooked in here. If we would not */
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/* provide callbacks, the tremor lib and the netfile */
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/* layer would clash and steal each other the data */
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/* from the stream ! */
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cb.read_func = ogg_read;
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cb.seek_func = ogg_seek;
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cb.close_func = ogg_close;
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cb.tell_func = ogg_tell;
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/* test the dope ... */
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//rval = ov_test_callbacks((void*)in, vf, NULL, 0, cb);
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rval = ov_open_callbacks(in, vf, NULL, 0, cb);
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/* and tell our friends about the quality of the stuff */
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// initialize the sound device here
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if(rval<0)
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{
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switch(rval)
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{
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/* err_txt from netfile.cpp */
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case OV_EREAD: sprintf(err_txt, "media read error"); break;
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case OV_ENOTVORBIS: sprintf(err_txt, "no vorbis stream"); break;
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case OV_EVERSION: sprintf(err_txt, "incompatible vorbis version"); break;
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case OV_EBADHEADER: sprintf(err_txt, "invalid bvorbis bitstream header"); break;
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case OV_EFAULT: sprintf(err_txt, "internal logic fault (tremor)"); break;
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default: sprintf(err_txt, "unknown error, code: %d", rval);
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}
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fprintf(stderr,"%s: %s\n", ProgName, err_txt);
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return false;
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}
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/* finish the opening and ignite the joint */
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//ov_test_open(vf);
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if(ov_seekable(vf))
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mSeekable = true;
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else
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mSeekable = false;
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return true;
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}
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