예제 #1
0
nsresult nsOggCodecState::Reset() {
  if (ogg_stream_reset(&mState) != 0) {
    return NS_ERROR_FAILURE;
  }
  mBuffer.Erase();
  return NS_OK;
}
예제 #2
0
static gboolean
gst_ogg_avi_parse_event (GstPad * pad, GstObject * parent, GstEvent * event)
{
  GstOggAviParse *ogg;
  gboolean ret;

  ogg = GST_OGG_AVI_PARSE (parent);

  switch (GST_EVENT_TYPE (event)) {
    case GST_EVENT_CAPS:
    {
      GstCaps *caps;

      gst_event_parse_caps (event, &caps);
      ret = gst_ogg_avi_parse_setcaps (pad, caps);
      gst_event_unref (event);
      break;
    }
    case GST_EVENT_FLUSH_START:
      ret = gst_pad_push_event (ogg->srcpad, event);
      break;
    case GST_EVENT_FLUSH_STOP:
      ogg_sync_reset (&ogg->sync);
      ogg_stream_reset (&ogg->stream);
      ogg->discont = TRUE;
      ret = gst_pad_push_event (ogg->srcpad, event);
      break;
    default:
      ret = gst_pad_push_event (ogg->srcpad, event);
      break;
  }
  return ret;
}
예제 #3
0
파일: DGVideo.cpp 프로젝트: CSRedRat/Dagon
void DGVideo::unload() {
    if (_isLoaded) {
        _isLoaded = false;
        _state = DGVideoInitial;
        
        _theoraInfo->videobuf_ready = 0;
        _theoraInfo->videobuf_granulepos -= 1;
        _theoraInfo->videobuf_time = 0;
        
        if (_theoraInfo->theora_p) {
            // Rewind and reset
            fseek(_handle, (long)_theoraInfo->bos * 8, SEEK_SET);
            ogg_stream_reset(&_theoraInfo->to);
            ogg_stream_clear(&_theoraInfo->to);
            theora_clear(&_theoraInfo->td);
            theora_comment_clear(&_theoraInfo->tc);
            theora_info_clear(&_theoraInfo->ti);
        }
        
        ogg_sync_clear(&_theoraInfo->oy);
        
        _theoraInfo->theora_p = 0;
        
        free(_currentFrame.data);
        fclose(_handle);
    }
}
예제 #4
0
void FLAC__ogg_decoder_aspect_flush(FLAC__OggDecoderAspect *aspect)
{
    (void)ogg_stream_reset(&aspect->stream_state);
    (void)ogg_sync_reset(&aspect->sync_state);
    aspect->end_of_stream = false;
    aspect->have_working_page = false;
}
예제 #5
0
nsresult OggCodecState::Reset() {
  if (ogg_stream_reset(&mState) != 0) {
    return NS_ERROR_FAILURE;
  }
  mPackets.Erase();
  ClearUnstamped();
  return NS_OK;
}
예제 #6
0
static PyObject * py_ogg_ogg_stream_reset(PyObject *self, PyObject *args) {
  int c_out;
  int size;
  ogg_stream_state * os;
  PyArg_ParseTuple(args, "s#", &os, &size);
  c_out = ogg_stream_reset(os);
  return Py_BuildValue("i", c_out);
};
예제 #7
0
void CAOggFLACDecoder::BDCReset()
{
    mFramesBufferedList.clear();
    complete_pages = 0;
    if (mCompressionInitialized)
        ogg_stream_reset(&mO_st);
    CAFLACDecoder::BDCReset();
}
예제 #8
0
파일: DGVideo.cpp 프로젝트: CSRedRat/Dagon
void DGVideo::stop() {
    if (_state == DGVideoPlaying) {
        _state = DGVideoStopped;
        
        // Rewind
        fseek(_handle, (long)_theoraInfo->bos * 8, SEEK_SET);
        ogg_stream_reset(&_theoraInfo->to);
    }
}
/*
 * Class:     org_tritonus_lowlevel_ogg_StreamState
 * Method:    reset
 * Signature: ()I
 */
JNIEXPORT jint JNICALL
Java_org_tritonus_lowlevel_ogg_StreamState_reset
(JNIEnv* env, jobject obj)
{
	ogg_stream_state*	handle;
	int			nReturn;

	if (debug_flag) { fprintf(debug_file, "Java_org_tritonus_lowlevel_ogg_StreamState_reset(): begin\n"); }
	handle = getHandle(env, obj);
	nReturn = ogg_stream_reset(handle);
	if (debug_flag) { fprintf(debug_file, "Java_org_tritonus_lowlevel_ogg_StreamState_reset(): end\n"); }
	return nReturn;
}
예제 #10
0
	void VideoClip_Theora::_executeRestart()
	{
		bool paused = this->timer->isPaused();
		if (!paused)
		{
			this->timer->pause();
		}
		long initialGranule = 0;
		th_decode_ctl(this->info.TheoraDecoder, TH_DECCTL_SET_GRANPOS, &initialGranule, sizeof(initialGranule));
		th_decode_free(this->info.TheoraDecoder);
		this->info.TheoraDecoder = th_decode_alloc(&this->info.TheoraInfo, this->info.TheoraSetup);
		ogg_stream_reset(&this->info.TheoraStreamState);
		if (this->audioInterface != NULL)
		{
			// empty the DSP buffer
			ogg_packet opVorbis;
			this->readAudioSamples = 0;
			while (ogg_stream_packetout(&this->info.VorbisStreamState, &opVorbis) > 0)
			{
				if (vorbis_synthesis(&this->info.VorbisBlock, &opVorbis) == 0)
				{
					vorbis_synthesis_blockin(&this->info.VorbisDSPState, &this->info.VorbisBlock);
				}
			}
			ogg_stream_reset(&this->info.VorbisStreamState);
		}
		ogg_sync_reset(&this->info.OggSyncState);
		this->stream->seek(0);
		ogg_int64_t granulePos = 0;
		th_decode_ctl(this->info.TheoraDecoder, TH_DECCTL_SET_GRANPOS, &granulePos, sizeof(granulePos));
		this->endOfFile = false;
		this->restarted = true;
		if (!paused)
		{
			this->timer->play();
		}
	}
예제 #11
0
void CAOggFLACDecoder::InitializeCompressionSettings()
{
    if (mCookie != NULL) {
        if (mCompressionInitialized)
            ogg_stream_clear(&mO_st);

        OggSerialNoAtom *atom = reinterpret_cast<OggSerialNoAtom*> (mCookie);

        if (EndianS32_BtoN(atom->type) == kCookieTypeOggSerialNo && EndianS32_BtoN(atom->size) <= mCookieSize) {
            ogg_stream_init(&mO_st, EndianS32_BtoN(atom->serialno));
        }
    }

    ogg_stream_reset(&mO_st);

    CAFLACDecoder::InitializeCompressionSettings();
}
예제 #12
0
파일: DGVideo.cpp 프로젝트: CSRedRat/Dagon
int DGVideo::_prepareFrame() {
    while (_state == DGVideoPlaying) {
		while (_theoraInfo->theora_p && !_theoraInfo->videobuf_ready) {
			if (ogg_stream_packetout(&_theoraInfo->to, &_theoraInfo->op) > 0) {
				theora_decode_packetin(&_theoraInfo->td, &_theoraInfo->op);
				_theoraInfo->videobuf_granulepos = _theoraInfo->td.granulepos;
				_theoraInfo->videobuf_time = theora_granule_time(&_theoraInfo->td, _theoraInfo->videobuf_granulepos);
				_theoraInfo->videobuf_ready = 1;
                
                if (!_theoraInfo->bos) {
                    _theoraInfo->bos = _theoraInfo->td.granulepos;
                }
			} else
				break;
		}
		
		if (!_theoraInfo->videobuf_ready && feof(_handle)) {
			if (_isLoopable) {
                // This is the begin of stream (granule position) * 8 bits (in bytes) 
				fseek(_handle, (long)_theoraInfo->bos * 8, SEEK_SET);
				ogg_stream_reset(&_theoraInfo->to);
			}
			else {
				this->stop();
			}
            
			break;
		}
		
		if (!_theoraInfo->videobuf_ready) {
			_bufferData(&_theoraInfo->oy);
			while (ogg_sync_pageout(&_theoraInfo->oy, &_theoraInfo->og) > 0) {
				_queuePage(_theoraInfo, &_theoraInfo->og);
			}
            
		} else {
			_theoraInfo->videobuf_ready = 0;
			
			return 1;
		}
		_theoraInfo->videobuf_ready = 0;
	}
	
	return 0;
}
예제 #13
0
파일: feed.c 프로젝트: pmyadlowsky/mash
static void *vorbis_thread(void *arg) {
	int res, n;
	char *oggbuf;
	time_t now;
	VORBIS_FEED *feed;
	feed = (VORBIS_FEED *)arg;
	pthread_setcanceltype(PTHREAD_CANCEL_ASYNCHRONOUS, NULL);
	pthread_mutex_lock(&(feed->base.thread_lock));
	if (vorbis_synthesis_init(&(feed->vd), &(feed->vi)) != 0) {
		logmsg("vorbis init failed\n");
		return NULL;
		}
	feed->base.running = 1;
	if (feeds == NULL) feeds = new_unit();
	link_unit((MASH_UNIT *)feed, feeds);
	vorbis_block_init(&(feed->vd), &(feed->vb));
	while (feed->base.running) {
		while (1) {
			res = ogg_sync_pageout(&(feed->oy), &(feed->og));
			if (res == 0) break;
			if (res < 0) {
				logmsg("missing data\n");
				continue;
				}
			res = ogg_stream_pagein(&(feed->os), &(feed->og));
			if (res < 0) {
				ogg_stream_reset(&(feed->os));
				ogg_stream_init(&(feed->os),
					ogg_page_serialno(&(feed->og)));
				now = time(NULL);
				logmsg("%s: bad ogg page\n", ctime(&now));
				continue;
				}
			process_vorbis_packets(feed);
			}
		pthread_cond_wait(&(feed->base.data_ready),
				&(feed->base.thread_lock));
		oggbuf = ogg_sync_buffer(&(feed->oy), BLOCKSIZE);
		n = read(feed->base.sock, oggbuf, BLOCKSIZE);
		ogg_sync_wrote(&(feed->oy), n);
		}
	pthread_mutex_unlock(&(feed->base.thread_lock));
	return NULL;
	}
예제 #14
0
static bool
vorbis_encoder_pre_tag(struct encoder *_encoder, G_GNUC_UNUSED GError **error)
{
	struct vorbis_encoder *encoder = (struct vorbis_encoder *)_encoder;

	vorbis_analysis_wrote(&encoder->vd, 0);
	vorbis_encoder_blockout(encoder);

	/* reinitialize vorbis_dsp_state and vorbis_block to reset the
	   end-of-stream marker */
	vorbis_block_clear(&encoder->vb);
	vorbis_dsp_clear(&encoder->vd);
	vorbis_analysis_init(&encoder->vd, &encoder->vi);
	vorbis_block_init(&encoder->vd, &encoder->vb);

	ogg_stream_reset(&encoder->os);

	encoder->flush = true;
	return true;
}
예제 #15
0
static GstStateChangeReturn
gst_ogg_avi_parse_change_state (GstElement * element, GstStateChange transition)
{
  GstOggAviParse *ogg;
  GstStateChangeReturn result = GST_STATE_CHANGE_FAILURE;

  ogg = GST_OGG_AVI_PARSE (element);

  switch (transition) {
    case GST_STATE_CHANGE_NULL_TO_READY:
      ogg_sync_init (&ogg->sync);
      break;
    case GST_STATE_CHANGE_READY_TO_PAUSED:
      ogg_sync_reset (&ogg->sync);
      ogg_stream_reset (&ogg->stream);
      ogg->serial = -1;
      ogg->discont = TRUE;
      break;
    case GST_STATE_CHANGE_PAUSED_TO_PLAYING:
      break;
    default:
      break;
  }

  result = parent_class->change_state (element, transition);

  switch (transition) {
    case GST_STATE_CHANGE_PLAYING_TO_PAUSED:
      break;
    case GST_STATE_CHANGE_PAUSED_TO_READY:
      break;
    case GST_STATE_CHANGE_READY_TO_NULL:
      ogg_sync_clear (&ogg->sync);
      break;
    default:
      break;
  }
  return result;
}
예제 #16
0
static gboolean
gst_ogg_avi_parse_event (GstPad * pad, GstEvent * event)
{
  GstOggAviParse *ogg;
  gboolean ret;

  ogg = GST_OGG_AVI_PARSE (GST_OBJECT_PARENT (pad));

  switch (GST_EVENT_TYPE (event)) {
    case GST_EVENT_FLUSH_START:
      ret = gst_pad_push_event (ogg->srcpad, event);
      break;
    case GST_EVENT_FLUSH_STOP:
      ogg_sync_reset (&ogg->sync);
      ogg_stream_reset (&ogg->stream);
      ogg->discont = TRUE;
      ret = gst_pad_push_event (ogg->srcpad, event);
      break;
    default:
      ret = gst_pad_push_event (ogg->srcpad, event);
      break;
  }
  return ret;
}
예제 #17
0
static int
spx_read_header (SF_PRIVATE * psf)
{	static SpeexStereoState STEREO_INIT = SPEEX_STEREO_STATE_INIT ;

	OGG_PRIVATE* odata = psf->container_data ;
	SPX_PRIVATE* spx = psf->codec_data ;

	ogg_int64_t page_granule = 0 ;
	int stream_init = 0 ;
	int	page_nb_packets = 0 ;
	int packet_count = 0 ;
	int enh_enabled = 1 ;
	int force_mode = -1 ;
	char * data ;
	int nb_read ;
	int lookahead ;

printf ("%s %d\n", __func__, __LINE__) ;

	psf_log_printf (psf, "Speex header\n") ;
	odata->eos = 0 ;

	/* Reset ogg stuff which has already been used in src/ogg.c. */
	ogg_stream_reset (&odata->ostream) ;
	ogg_sync_reset (&odata->osync) ;

	/* Seek to start of stream. */
	psf_fseek (psf, 0, SEEK_SET) ;

	/* Initialize. */
	ogg_sync_init (&odata->osync) ;
	speex_bits_init (&spx->bits) ;

	/* Set defaults. */
	psf->sf.channels = -1 ;
	psf->sf.samplerate = 0 ;
	spx->stereo = STEREO_INIT ;

	/* Get a pointer to the ogg buffer and read data into it. */
	data = ogg_sync_buffer (&odata->osync, OGG_SPX_READ_SIZE) ;
	nb_read = psf_fread (data, 1, OGG_SPX_READ_SIZE, psf) ;
	ogg_sync_wrote (&odata->osync, nb_read) ;

	/* Now we chew on Ogg packets. */
	while (ogg_sync_pageout (&odata->osync, &odata->opage) == 1)
	{	if (stream_init == 0)
		{	ogg_stream_init (&odata->ostream, ogg_page_serialno (&odata->opage)) ;
			stream_init = 1 ;
			} ;

		if (ogg_page_serialno (&odata->opage) != odata->ostream.serialno)
		{	/* so all streams are read. */
			ogg_stream_reset_serialno (&odata->ostream, ogg_page_serialno (&odata->opage)) ;
			} ;

		/*Add page to the bitstream*/
		ogg_stream_pagein (&odata->ostream, &odata->opage) ;
		page_granule = ogg_page_granulepos (&odata->opage) ;
		page_nb_packets = ogg_page_packets (&odata->opage) ;

		/*Extract all available packets*/
		while (odata->eos == 0 && ogg_stream_packetout (&odata->ostream, &odata->opacket) == 1)
		{	if (odata->opacket.bytes >= 8 && memcmp (odata->opacket.packet, "Speex   ", 8) == 0)
			{	spx->serialno = odata->ostream.serialno ;
				} ;

			if (spx->serialno == -1 || odata->ostream.serialno != spx->serialno)
				break ;

			if (packet_count == 0)
			{	spx->state = spx_header_read (psf, &odata->opacket, enh_enabled, force_mode) ;
				if (! spx->state)
					break ;

				speex_decoder_ctl (spx->state, SPEEX_GET_LOOKAHEAD, &lookahead) ;
				if (spx->nframes == 0)
					spx->nframes = 1 ;
				}
			else if (packet_count == 1)
			{	spx_print_comments ((const char*) odata->opacket.packet, odata->opacket.bytes) ;
				}
			else if (packet_count < 2 + spx->header.extra_headers)
			{	/* Ignore extra headers */
				}
			packet_count ++ ;
			} ;
		} ;

	psf_log_printf (psf, "End\n") ;

	psf_log_printf (psf, "packet_count %d\n", packet_count) ;
	psf_log_printf (psf, "page_nb_packets %d\n", page_nb_packets) ;
	psf_log_printf (psf, "page_granule %lld\n", page_granule) ;

	return 0 ;
} /* spx_read_header */
예제 #18
0
	void VideoClip_Theora::_executeSeek()
	{
#if _DEBUG
		log(this->name + " [seek]: seeking to frame " + str(this->seekFrame));
#endif
		int frame = 0;
		float time = this->seekFrame / getFps();
		this->timer->seek(time);
		bool paused = this->timer->isPaused();
		if (!paused)
		{
			this->timer->pause(); // pause until seeking is done
		}
		this->endOfFile = false;
		this->restarted = false;
		this->_resetFrameQueue();
		// reset the video decoder.
		ogg_stream_reset(&this->info.TheoraStreamState);
		th_decode_free(this->info.TheoraDecoder);
		this->info.TheoraDecoder = th_decode_alloc(&this->info.TheoraInfo, this->info.TheoraSetup);
		Mutex::ScopeLock audioMutexLock;
		if (this->audioInterface != NULL)
		{
			audioMutexLock.acquire(this->audioMutex);
			ogg_stream_reset(&this->info.VorbisStreamState);
			vorbis_synthesis_restart(&this->info.VorbisDSPState);
			this->destroyAllAudioPackets();
		}
		// first seek to desired frame, then figure out the location of the
		// previous key frame and seek to it.
		// then by setting the correct time, the decoder will skip N frames untill
		// we get the frame we want.
		frame = (int)this->_seekPage(this->seekFrame, 1); // find the key frame nearest to the target frame
#ifdef _DEBUG
	//		log(mName + " [seek]: nearest key frame for frame " + str(mSeekFrame) + " is frame: " + str(frame));
#endif
		this->_seekPage(std::max(0, frame - 1), 0);

		ogg_packet opTheora;
		ogg_int64_t granulePos;
		bool granuleSet = false;
		if (frame <= 1)
		{
			if (this->info.TheoraInfo.version_major == 3 && this->info.TheoraInfo.version_minor == 2 && this->info.TheoraInfo.version_subminor == 0)
			{
				granulePos = 0;
			}
			else
			{
				granulePos = 1; // because of difference in granule interpretation in theora streams 3.2.0 and newer ones
			}
			th_decode_ctl(this->info.TheoraDecoder, TH_DECCTL_SET_GRANPOS, &granulePos, sizeof(granulePos));
			granuleSet = true;
		}
		// now that we've found the key frame that preceeds our desired frame, lets keep on decoding frames until we
		// reach our target frame.
		int status = 0;
		while (this->seekFrame != 0)
		{
			if (ogg_stream_packetout(&this->info.TheoraStreamState, &opTheora) > 0)
			{
				if (!granuleSet)
				{
					// theora decoder requires to set the granule pos after seek to be able to determine the current frame
					if (opTheora.granulepos < 0)
					{
						continue; // ignore prev delta frames until we hit a key frame
					}
					th_decode_ctl(this->info.TheoraDecoder, TH_DECCTL_SET_GRANPOS, &opTheora.granulepos, sizeof(opTheora.granulepos));
					granuleSet = true;
				}
				status = th_decode_packetin(this->info.TheoraDecoder, &opTheora, &granulePos);
				if (status != 0 && status != TH_DUPFRAME)
				{
					continue;
				}
				frame = (int)th_granule_frame(this->info.TheoraDecoder, granulePos);
				if (frame >= this->seekFrame - 1)
				{
					break;
				}
			}
			else if (!this->_readData())
			{
				log(this->name + " [seek]: fineseeking failed, _readData failed!");
				return;
			}
		}
#ifdef _DEBUG
		//	log(mName + " [seek]: fineseeked to frame " + str(frame + 1) + ", requested: " + str(mSeekFrame));
#endif
		if (this->audioInterface != NULL)
		{
			// read audio data until we reach a timeStamp. this usually takes only one iteration, but just in case let's
			// wrap it in a loop
			float timeStamp = 0.0f;
			while (true)
			{
				timeStamp = this->_decodeAudio();
				if (timeStamp >= 0)
				{
					break;
				}
				this->_readData();
			}
			float rate = (float)this->audioFrequency * this->audioChannelsCount;
			float queuedTime = this->getAudioPacketQueueLength();
			int trimmedCount = 0;
			// at this point there are only 2 possibilities: either we have too much packets and we have to delete
			// the first N ones, or we don't have enough, so let's fill the gap with silence.
			if (time > timeStamp - queuedTime)
			{
				while (this->audioPacketQueue != NULL)
				{
					if (time <= timeStamp - queuedTime + this->audioPacketQueue->samplesCount / rate)
					{
						trimmedCount = (int)((timeStamp - queuedTime + this->audioPacketQueue->samplesCount / rate - time) * rate);
						if (this->audioPacketQueue->samplesCount - trimmedCount <= 0)
						{
							this->destroyAudioPacket(this->popAudioPacket()); // if there's no data to be left, just destroy it
						}
						else
						{
							for (int i = trimmedCount, j = 0; i < this->audioPacketQueue->samplesCount; ++i, ++j)
							{
								this->audioPacketQueue->pcmData[j] = this->audioPacketQueue->pcmData[i];
							}
							this->audioPacketQueue->samplesCount -= trimmedCount;
						}
						break;
					}
					queuedTime -= this->audioPacketQueue->samplesCount / rate;
					this->destroyAudioPacket(this->popAudioPacket());
				}
			}
			// expand the first packet with silence.
			else if (this->audioPacketQueue != NULL)
			{
				int i = 0;
				int j = 0;
				int missingCount = (int)((timeStamp - queuedTime - time) * rate);
				if (missingCount > 0)
				{
					float* samples = new float[missingCount + this->audioPacketQueue->samplesCount];
					if (missingCount > 0)
					{
						memset(samples, 0, missingCount * sizeof(float));
					}
					for (j = 0; i < missingCount + this->audioPacketQueue->samplesCount; ++i, ++j)
					{
						samples[i] = this->audioPacketQueue->pcmData[j];
					}
					delete[] this->audioPacketQueue->pcmData;
					this->audioPacketQueue->pcmData = samples;
				}
			}
			this->lastDecodedFrameNumber = this->seekFrame;
			this->readAudioSamples = (unsigned int)(timeStamp * this->audioFrequency);
			audioMutexLock.release();
		}
		if (!paused)
		{
			this->timer->play();
		}
		this->seekFrame = -1;
	}
예제 #19
0
static int
vorbis_read_header (SF_PRIVATE *psf, int log_data)
{	OGG_PRIVATE *odata = (OGG_PRIVATE *) psf->container_data ;
	VORBIS_PRIVATE *vdata = (VORBIS_PRIVATE *) psf->codec_data ;
	char *buffer ;
	int	bytes ;
	int i, nn ;

	odata->eos = 0 ;

	/* Weird stuff happens if these aren't called. */
	ogg_stream_reset (&odata->ostream) ;
	ogg_sync_reset (&odata->osync) ;

	/*
	**	Grab some data at the head of the stream.  We want the first page
	**	(which is guaranteed to be small and only contain the Vorbis
	**	stream initial header) We need the first page to get the stream
	**	serialno.
	*/

	/* Expose the buffer */
	buffer = ogg_sync_buffer (&odata->osync, 4096L) ;

	/* Grab the part of the header that has already been read. */
	memcpy (buffer, psf->header, psf->headindex) ;
	bytes = psf->headindex ;

	/* Submit a 4k block to libvorbis' Ogg layer */
	bytes += psf_fread (buffer + psf->headindex, 1, 4096 - psf->headindex, psf) ;
	ogg_sync_wrote (&odata->osync, bytes) ;

	/* Get the first page. */
	if ((nn = ogg_sync_pageout (&odata->osync, &odata->opage)) != 1)
	{	/* Have we simply run out of data?  If so, we're done. */
		if (bytes < 4096)
			return 0 ;

		/* Error case.  Must not be Vorbis data */
		psf_log_printf (psf, "Input does not appear to be an Ogg bitstream.\n") ;
		return SFE_MALFORMED_FILE ;
	} ;

	/*
	**	Get the serial number and set up the rest of decode.
	**	Serialno first ; use it to set up a logical stream.
	*/
	ogg_stream_clear (&odata->ostream) ;
	ogg_stream_init (&odata->ostream, ogg_page_serialno (&odata->opage)) ;

	if (ogg_stream_pagein (&odata->ostream, &odata->opage) < 0)
	{	/* Error ; stream version mismatch perhaps. */
		psf_log_printf (psf, "Error reading first page of Ogg bitstream data\n") ;
		return SFE_MALFORMED_FILE ;
	} ;

	if (ogg_stream_packetout (&odata->ostream, &odata->opacket) != 1)
	{	/* No page? must not be vorbis. */
		psf_log_printf (psf, "Error reading initial header packet.\n") ;
		return SFE_MALFORMED_FILE ;
	} ;

	/*
	**	This function (vorbis_read_header) gets called multiple times, so the OGG
	**	and vorbis structs have to be cleared every time we pass through to
	**	prevent memory leaks.
	*/
	vorbis_block_clear (&vdata->vblock) ;
	vorbis_dsp_clear (&vdata->vdsp) ;
	vorbis_comment_clear (&vdata->vcomment) ;
	vorbis_info_clear (&vdata->vinfo) ;

	/*
	**	Extract the initial header from the first page and verify that the
	**	Ogg bitstream is in fact Vorbis data.
	**
	**	I handle the initial header first instead of just having the code
	**	read all three Vorbis headers at once because reading the initial
	**	header is an easy way to identify a Vorbis bitstream and it's
	**	useful to see that functionality seperated out.
	*/
	vorbis_info_init (&vdata->vinfo) ;
	vorbis_comment_init (&vdata->vcomment) ;

	if (vorbis_synthesis_headerin (&vdata->vinfo, &vdata->vcomment, &odata->opacket) < 0)
	{	/* Error case ; not a vorbis header. */
		psf_log_printf (psf, "Found Vorbis in stream header, but vorbis_synthesis_headerin failed.\n") ;
		return SFE_MALFORMED_FILE ;
	} ;

	/*
	**	Common Ogg metadata fields?
	**	TITLE, VERSION, ALBUM, TRACKNUMBER, ARTIST, PERFORMER, COPYRIGHT, LICENSE,
	**	ORGANIZATION, DESCRIPTION, GENRE, DATE, LOCATION, CONTACT, ISRC,
	*/

	if (log_data)
	{	int k ;

		for (k = 0 ; k < ARRAY_LEN (vorbis_metatypes) ; k++)
		{	char *dd ;

			dd = vorbis_comment_query (&vdata->vcomment, vorbis_metatypes [k].name, 0) ;
			if (dd == NULL)
				continue ;
			psf_store_string (psf, vorbis_metatypes [k].id, dd) ;
		} ;
	} ;

	/*
	**	At this point, we're sure we're Vorbis.	We've set up the logical (Ogg)
	**	bitstream decoder. Get the comment and codebook headers and set up the
	**	Vorbis decoder.
	**
	**	The next two packets in order are the comment and codebook headers.
	**	They're likely large and may span multiple pages.  Thus we reead
	**	and submit data until we get our two pacakets, watching that no
	**	pages are missing.  If a page is missing, error out ; losing a
	**	header page is the only place where missing data is fatal.
	*/

	i = 0 ;			/* Count of number of packets read */
	while (i < 2)
	{	int result = ogg_sync_pageout (&odata->osync, &odata->opage) ;
		if (result == 0)
		{	/* Need more data */
			buffer = ogg_sync_buffer (&odata->osync, 4096) ;
			bytes = psf_fread (buffer, 1, 4096, psf) ;

			if (bytes == 0 && i < 2)
			{	psf_log_printf (psf, "End of file before finding all Vorbis headers!\n") ;
				return SFE_MALFORMED_FILE ;
			} ;
			nn = ogg_sync_wrote (&odata->osync, bytes) ;
		}
		else if (result == 1)
		{	/*
			**	Don't complain about missing or corrupt data yet. We'll
			**	catch it at the packet output phase.
			**
			**	We can ignore any errors here as they'll also become apparent
			**	at packetout.
			*/
			nn = ogg_stream_pagein (&odata->ostream, &odata->opage) ;
			while (i < 2)
			{	result = ogg_stream_packetout (&odata->ostream, &odata->opacket) ;
				if (result == 0)
					break ;
				if (result < 0)
				{	/*	Uh oh ; data at some point was corrupted or missing!
					**	We can't tolerate that in a header. Die. */
					psf_log_printf (psf, "Corrupt secondary header.	Exiting.\n") ;
					return SFE_MALFORMED_FILE ;
				} ;

				vorbis_synthesis_headerin (&vdata->vinfo, &vdata->vcomment, &odata->opacket) ;
				i++ ;
			} ;
		} ;
	} ;

	if (log_data)
	{	int printed_metadata_msg = 0 ;
		int k ;

		psf_log_printf (psf, "Bitstream is %d channel, %D Hz\n", vdata->vinfo.channels, vdata->vinfo.rate) ;
		psf_log_printf (psf, "Encoded by : %s\n", vdata->vcomment.vendor) ;

		/* Throw the comments plus a few lines about the bitstream we're decoding. */
		for (k = 0 ; k < ARRAY_LEN (vorbis_metatypes) ; k++)
		{	char *dd ;

			dd = vorbis_comment_query (&vdata->vcomment, vorbis_metatypes [k].name, 0) ;
			if (dd == NULL)
				continue ;

			if (printed_metadata_msg == 0)
			{	psf_log_printf (psf, "Metadata :\n") ;
				printed_metadata_msg = 1 ;
			} ;

			psf_store_string (psf, vorbis_metatypes [k].id, dd) ;
			psf_log_printf (psf, "  %-10s : %s\n", vorbis_metatypes [k].name, dd) ;
		} ;

		psf_log_printf (psf, "End\n") ;
	} ;

	psf->sf.samplerate	= vdata->vinfo.rate ;
	psf->sf.channels	= vdata->vinfo.channels ;
	psf->sf.format		= SF_FORMAT_OGG | SF_FORMAT_VORBIS ;

	/*	OK, got and parsed all three headers. Initialize the Vorbis
	**	packet->PCM decoder.
	**	Central decode state. */
	vorbis_synthesis_init (&vdata->vdsp, &vdata->vinfo) ;

	/*	Local state for most of the decode so multiple block decodes can
	**	proceed in parallel. We could init multiple vorbis_block structures
	**	for vd here. */
	vorbis_block_init (&vdata->vdsp, &vdata->vblock) ;

	vdata->loc = 0 ;

	return 0 ;
} /* vorbis_read_header */
예제 #20
0
파일: ogg.c 프로젝트: 5in4/libsox.dll
static int
ogg_stream_classify (SF_PRIVATE *psf, OGG_PRIVATE* odata)
{	char *buffer ;
	int	 bytes, nn ;

	/* Call this here so it only gets called once, so no memory is leaked. */
	ogg_sync_init (&odata->osync) ;

	odata->eos = 0 ;

	/* Weird stuff happens if these aren't called. */
	ogg_stream_reset (&odata->ostream) ;
	ogg_sync_reset (&odata->osync) ;

	/*
	**	Grab some data at the head of the stream.  We want the first page
	**	(which is guaranteed to be small and only contain the Vorbis
	**	stream initial header) We need the first page to get the stream
	**	serialno.
	*/

	/* Expose the buffer */
	buffer = ogg_sync_buffer (&odata->osync, 4096L) ;

	/* Grab the part of the header that has already been read. */
	memcpy (buffer, psf->header, psf->headindex) ;
	bytes = psf->headindex ;

	/* Submit a 4k block to libvorbis' Ogg layer */
	bytes += psf_fread (buffer + psf->headindex, 1, 4096 - psf->headindex, psf) ;
	ogg_sync_wrote (&odata->osync, bytes) ;

	/* Get the first page. */
	if ((nn = ogg_sync_pageout (&odata->osync, &odata->opage)) != 1)
	{
		/* Have we simply run out of data?  If so, we're done. */
		if (bytes < 4096)
			return 0 ;

		/* Error case.  Must not be Vorbis data */
		psf_log_printf (psf, "Input does not appear to be an Ogg bitstream.\n") ;
		return SFE_MALFORMED_FILE ;
		} ;

	/*
	**	Get the serial number and set up the rest of decode.
	**	Serialno first ; use it to set up a logical stream.
	*/
	ogg_stream_clear (&odata->ostream) ;
	ogg_stream_init (&odata->ostream, ogg_page_serialno (&odata->opage)) ;

	if (ogg_stream_pagein (&odata->ostream, &odata->opage) < 0)
	{	/* Error ; stream version mismatch perhaps. */
		psf_log_printf (psf, "Error reading first page of Ogg bitstream data\n") ;
		return SFE_MALFORMED_FILE ;
		} ;

	if (ogg_stream_packetout (&odata->ostream, &odata->opacket) != 1)
	{	/* No page? must not be vorbis. */
		psf_log_printf (psf, "Error reading initial header packet.\n") ;
		return SFE_MALFORMED_FILE ;
		} ;

	odata->codec = ogg_page_classify (psf, &odata->opage) ;

	switch (odata->codec)
	{	case OGG_VORBIS :
			psf->sf.format = SF_FORMAT_OGG | SF_FORMAT_VORBIS ;
			return 0 ;

		case OGG_FLAC :
		case OGG_FLAC0 :
			psf->sf.format = SF_FORMAT_OGGFLAC ;
			return 0 ;

		case OGG_SPEEX :
			psf->sf.format = SF_FORMAT_OGG | SF_FORMAT_SPEEX ;
			return 0 ;

		case OGG_PCM :
			psf_log_printf (psf, "Detected Ogg/PCM data. This is not supported yet.\n") ;
			return SFE_UNIMPLEMENTED ;

		default :
			break ;
		} ;

	psf_log_printf (psf, "This Ogg bitstream contains some uknown data type.\n") ;
	return SFE_UNIMPLEMENTED ;
} /* ogg_stream_classify */
예제 #21
0
int ov_raw_seek(OggVorbis_File *vf,long pos){
  ogg_stream_state work_os;

  if(vf->ready_state<OPENED)return(OV_EINVAL);
  if(!vf->seekable)
    return(OV_ENOSEEK); /* don't dump machine if we can't seek */

  if(pos<0 || pos>vf->offsets[vf->links])return(OV_EINVAL);
  
  /* clear out decoding machine state */
  vf->pcm_offset=-1;
  _decode_clear(vf);
  
  _seek_helper(vf,pos);

  /* we need to make sure the pcm_offset is set, but we don't want to
     advance the raw cursor past good packets just to get to the first
     with a granulepos.  That's not equivalent behavior to beginning
     decoding as immediately after the seek position as possible.

     So, a hack.  We use two stream states; a local scratch state and
     a the shared vf->os stream state.  We use the local state to
     scan, and the shared state as a buffer for later decode. 

     Unfortuantely, on the last page we still advance to last packet
     because the granulepos on the last page is not necessarily on a
     packet boundary, and we need to make sure the granpos is
     correct. 
  */

  {
    ogg_page og;
    ogg_packet op;
    int lastblock=0;
    int accblock=0;
    int thisblock=-1;
    int eosflag=0;

    memset(&work_os,0,sizeof(work_os));/* so that it's safe to clear
					  it later even if we don't
					  init it */

    while(1){
      if(vf->ready_state==STREAMSET){
	/* snarf/scan a packet if we can */
	int result=ogg_stream_packetout(&work_os,&op);
      
	if(result>0){

	  if(vf->vi[vf->current_link].codec_setup)
	    thisblock=vorbis_packet_blocksize(vf->vi+vf->current_link,&op);
	  if(eosflag)
	    ogg_stream_packetout(&vf->os,NULL);
	  else
	    if(lastblock)accblock+=(lastblock+thisblock)>>2;

	  if(op.granulepos!=-1){
	    int i,link=vf->current_link;
	    ogg_int64_t granulepos=op.granulepos;
	    
	    for(i=0;i<link;i++)
	      granulepos+=vf->pcmlengths[i];
	    vf->pcm_offset=granulepos-accblock;
	    break;
	  }
	  lastblock=thisblock;
	  continue;
	}
      }
      
      if(!lastblock){
	if(_get_next_page(vf,&og,-1)<0){
	  vf->pcm_offset=ov_pcm_total(vf,-1);
	  break;
	}
      }else{
	/* huh?  Bogus stream with packets but no granulepos */
	vf->pcm_offset=-1;
	break;
      }
      
      /* has our decoding just traversed a bitstream boundary? */
      if(vf->ready_state==STREAMSET)
	if(vf->current_serialno!=ogg_page_serialno(&og)){
	_decode_clear(vf); /* clear out stream state */
	ogg_stream_clear(&work_os);
      }

      if(vf->ready_state<STREAMSET){
	int link;
	
	vf->current_serialno=ogg_page_serialno(&og);
	for(link=0;link<vf->links;link++)
	  if(vf->serialnos[link]==vf->current_serialno)break;
	if(link==vf->links)goto seek_error; /* sign of a bogus stream.
					       error out, leave
					       machine uninitialized */
	vf->current_link=link;
	
	ogg_stream_init(&vf->os,vf->current_serialno);
	ogg_stream_reset(&vf->os); 
	ogg_stream_init(&work_os,vf->current_serialno);
	ogg_stream_reset(&work_os); 
	vf->ready_state=STREAMSET;
	
      }
    
      ogg_stream_pagein(&vf->os,&og);
      ogg_stream_pagein(&work_os,&og);
      eosflag=ogg_page_eos(&og);
    }
  }
예제 #22
0
파일: speex.c 프로젝트: jonsafari/mocp
static int spx_seek (void *prv_data, int sec)
{
	struct spx_data *data = (struct spx_data *)prv_data;
	off_t begin = 0, end, old_pos;

	assert (sec >= 0);

	end = io_file_size (data->stream);
	if (end == -1)
		return -1;
	old_pos = io_tell (data->stream);

	debug ("Seek request to %ds", sec);

	while (1) {
		off_t middle = (end + begin) / 2;
		ogg_int64_t granule_pos;
		int position_seconds;

		debug ("Seek to %"PRId64, middle);

		if (io_seek(data->stream, middle, SEEK_SET) == -1) {
			io_seek (data->stream, old_pos, SEEK_SET);
			ogg_stream_reset (&data->os);
			ogg_sync_reset (&data->oy);
			return -1;
		}

		debug ("Syncing...");

		/* Sync to page and read it */
		ogg_sync_reset (&data->oy);
		while (!io_eof(data->stream)) {
			if (ogg_sync_pageout(&data->oy, &data->og) == 1) {
				debug ("Sync");
				break;
			}

			if (!io_eof(data->stream)) {
				debug ("Need more data");
				get_more_data (data);
			}
		}

		if (io_eof(data->stream)) {
			debug ("EOF when syncing");
			return -1;
		}

		granule_pos = ogg_page_granulepos(&data->og);
		position_seconds = granule_pos / data->rate;

		debug ("We are at %ds", position_seconds);

		if (position_seconds == sec) {
			ogg_stream_pagein (&data->os, &data->og);
			debug ("We have it at granulepos %"PRId64, granule_pos);
			break;
		}
		else if (sec < position_seconds) {
			end = middle;
			debug ("going back");
		}
		else {
			begin = middle;
			debug ("going forward");
		}

		debug ("begin - end %"PRId64" - %"PRId64, begin, end);

		if (end - begin <= 200) {

			/* Can't find the exact position. */
			sec = position_seconds;
			break;
		}
	}

	ogg_sync_reset (&data->oy);
	ogg_stream_reset (&data->os);

	return sec;
}
예제 #23
0
int main(void){

  ogg_stream_init(&os_en,0x04030201);
  ogg_stream_init(&os_de,0x04030201);
  ogg_sync_init(&oy);

  /* Exercise each code path in the framing code.  Also verify that
     the checksums are working.  */

  {
    /* 17 only */
    const int packets[]={17, -1};
    const int *headret[]={head1_0,NULL};
    
    fprintf(stderr,"testing single page encoding... ");
    test_pack(packets,headret);
  }

  {
    /* 17, 254, 255, 256, 500, 510, 600 byte, pad */
    const int packets[]={17, 254, 255, 256, 500, 510, 600, -1};
    const int *headret[]={head1_1,head2_1,NULL};
    
    fprintf(stderr,"testing basic page encoding... ");
    test_pack(packets,headret);
  }

  {
    /* nil packets; beginning,middle,end */
    const int packets[]={0,17, 254, 255, 0, 256, 0, 500, 510, 600, 0, -1};
    const int *headret[]={head1_2,head2_2,NULL};
    
    fprintf(stderr,"testing basic nil packets... ");
    test_pack(packets,headret);
  }

  {
    /* large initial packet */
    const int packets[]={4345,259,255,-1};
    const int *headret[]={head1_3,head2_3,NULL};
    
    fprintf(stderr,"testing initial-packet lacing > 4k... ");
    test_pack(packets,headret);
  }

  {
    /* continuing packet test */
    const int packets[]={0,4345,259,255,-1};
    const int *headret[]={head1_4,head2_4,head3_4,NULL};
    
    fprintf(stderr,"testing single packet page span... ");
    test_pack(packets,headret);
  }

  /* page with the 255 segment limit */
  {

    const int packets[]={0,10,10,10,10,10,10,10,10,
		   10,10,10,10,10,10,10,10,
		   10,10,10,10,10,10,10,10,
		   10,10,10,10,10,10,10,10,
		   10,10,10,10,10,10,10,10,
		   10,10,10,10,10,10,10,10,
		   10,10,10,10,10,10,10,10,
		   10,10,10,10,10,10,10,10,
		   10,10,10,10,10,10,10,10,
		   10,10,10,10,10,10,10,10,
		   10,10,10,10,10,10,10,10,
		   10,10,10,10,10,10,10,10,
		   10,10,10,10,10,10,10,10,
		   10,10,10,10,10,10,10,10,
		   10,10,10,10,10,10,10,10,
		   10,10,10,10,10,10,10,10,
		   10,10,10,10,10,10,10,10,
		   10,10,10,10,10,10,10,10,
		   10,10,10,10,10,10,10,10,
		   10,10,10,10,10,10,10,10,
		   10,10,10,10,10,10,10,10,
		   10,10,10,10,10,10,10,10,
		   10,10,10,10,10,10,10,10,
		   10,10,10,10,10,10,10,10,
		   10,10,10,10,10,10,10,10,
		   10,10,10,10,10,10,10,10,
		   10,10,10,10,10,10,10,10,
		   10,10,10,10,10,10,10,10,
		   10,10,10,10,10,10,10,10,
		   10,10,10,10,10,10,10,10,
		   10,10,10,10,10,10,10,10,
		   10,10,10,10,10,10,10,50,-1};
    const int *headret[]={head1_5,head2_5,head3_5,NULL};
    
    fprintf(stderr,"testing max packet segments... ");
    test_pack(packets,headret);
  }

  {
    /* packet that overspans over an entire page */
    const int packets[]={0,100,9000,259,255,-1};
    const int *headret[]={head1_6,head2_6,head3_6,head4_6,NULL};
    
    fprintf(stderr,"testing very large packets... ");
    test_pack(packets,headret);
  }

  {
    /* term only page.  why not? */
    const int packets[]={0,100,4080,-1};
    const int *headret[]={head1_7,head2_7,head3_7,NULL};
    
    fprintf(stderr,"testing zero data page (1 nil packet)... ");
    test_pack(packets,headret);
  }



  {
    /* build a bunch of pages for testing */
    unsigned char *data=_ogg_malloc(1024*1024);
    int pl[]={0,100,4079,2956,2057,76,34,912,0,234,1000,1000,1000,300,-1};
    int inptr=0,i,j;
    ogg_page og[5];
    
    ogg_stream_reset(&os_en);

    for(i=0;pl[i]!=-1;i++){
      ogg_packet op;
      int len=pl[i];
      
      op.packet=data+inptr;
      op.bytes=len;
      op.e_o_s=(pl[i+1]<0?1:0);
      op.granulepos=(i+1)*1000;

      for(j=0;j<len;j++)data[inptr++]=i+j;
      ogg_stream_packetin(&os_en,&op);
    }

    _ogg_free(data);

    /* retrieve finished pages */
    for(i=0;i<5;i++){
      if(ogg_stream_pageout(&os_en,&og[i])==0){
	fprintf(stderr,"Too few pages output building sync tests!\n");
	exit(1);
      }
      copy_page(&og[i]);
    }

    /* Test lost pages on pagein/packetout: no rollback */
    {
      ogg_page temp;
      ogg_packet test;

      fprintf(stderr,"Testing loss of pages... ");

      ogg_sync_reset(&oy);
      ogg_stream_reset(&os_de);
      for(i=0;i<5;i++){
	memcpy(ogg_sync_buffer(&oy,og[i].header_len),og[i].header,
	       og[i].header_len);
	ogg_sync_wrote(&oy,og[i].header_len);
	memcpy(ogg_sync_buffer(&oy,og[i].body_len),og[i].body,og[i].body_len);
	ogg_sync_wrote(&oy,og[i].body_len);
      }

      ogg_sync_pageout(&oy,&temp);
      ogg_stream_pagein(&os_de,&temp);
      ogg_sync_pageout(&oy,&temp);
      ogg_stream_pagein(&os_de,&temp);
      ogg_sync_pageout(&oy,&temp);
      /* skip */
      ogg_sync_pageout(&oy,&temp);
      ogg_stream_pagein(&os_de,&temp);

      /* do we get the expected results/packets? */
      
      if(ogg_stream_packetout(&os_de,&test)!=1)error();
      checkpacket(&test,0,0,0);
      if(ogg_stream_packetout(&os_de,&test)!=1)error();
      checkpacket(&test,100,1,-1);
      if(ogg_stream_packetout(&os_de,&test)!=1)error();
      checkpacket(&test,4079,2,3000);
      if(ogg_stream_packetout(&os_de,&test)!=-1){
	fprintf(stderr,"Error: loss of page did not return error\n");
	exit(1);
      }
      if(ogg_stream_packetout(&os_de,&test)!=1)error();
      checkpacket(&test,76,5,-1);
      if(ogg_stream_packetout(&os_de,&test)!=1)error();
      checkpacket(&test,34,6,-1);
      fprintf(stderr,"ok.\n");
    }

    /* Test lost pages on pagein/packetout: rollback with continuation */
    {
      ogg_page temp;
      ogg_packet test;

      fprintf(stderr,"Testing loss of pages (rollback required)... ");

      ogg_sync_reset(&oy);
      ogg_stream_reset(&os_de);
      for(i=0;i<5;i++){
	memcpy(ogg_sync_buffer(&oy,og[i].header_len),og[i].header,
	       og[i].header_len);
	ogg_sync_wrote(&oy,og[i].header_len);
	memcpy(ogg_sync_buffer(&oy,og[i].body_len),og[i].body,og[i].body_len);
	ogg_sync_wrote(&oy,og[i].body_len);
      }

      ogg_sync_pageout(&oy,&temp);
      ogg_stream_pagein(&os_de,&temp);
      ogg_sync_pageout(&oy,&temp);
      ogg_stream_pagein(&os_de,&temp);
      ogg_sync_pageout(&oy,&temp);
      ogg_stream_pagein(&os_de,&temp);
      ogg_sync_pageout(&oy,&temp);
      /* skip */
      ogg_sync_pageout(&oy,&temp);
      ogg_stream_pagein(&os_de,&temp);

      /* do we get the expected results/packets? */
      
      if(ogg_stream_packetout(&os_de,&test)!=1)error();
      checkpacket(&test,0,0,0);
      if(ogg_stream_packetout(&os_de,&test)!=1)error();
      checkpacket(&test,100,1,-1);
      if(ogg_stream_packetout(&os_de,&test)!=1)error();
      checkpacket(&test,4079,2,3000);
      if(ogg_stream_packetout(&os_de,&test)!=1)error();
      checkpacket(&test,2956,3,4000);
      if(ogg_stream_packetout(&os_de,&test)!=-1){
	fprintf(stderr,"Error: loss of page did not return error\n");
	exit(1);
      }
      if(ogg_stream_packetout(&os_de,&test)!=1)error();
      checkpacket(&test,300,13,14000);
      fprintf(stderr,"ok.\n");
    }
    
    /* the rest only test sync */
    {
      ogg_page og_de;
      /* Test fractional page inputs: incomplete capture */
      fprintf(stderr,"Testing sync on partial inputs... ");
      ogg_sync_reset(&oy);
      memcpy(ogg_sync_buffer(&oy,og[1].header_len),og[1].header,
	     3);
      ogg_sync_wrote(&oy,3);
      if(ogg_sync_pageout(&oy,&og_de)>0)error();
      
      /* Test fractional page inputs: incomplete fixed header */
      memcpy(ogg_sync_buffer(&oy,og[1].header_len),og[1].header+3,
	     20);
      ogg_sync_wrote(&oy,20);
      if(ogg_sync_pageout(&oy,&og_de)>0)error();
      
      /* Test fractional page inputs: incomplete header */
      memcpy(ogg_sync_buffer(&oy,og[1].header_len),og[1].header+23,
	     5);
      ogg_sync_wrote(&oy,5);
      if(ogg_sync_pageout(&oy,&og_de)>0)error();
      
      /* Test fractional page inputs: incomplete body */
      
      memcpy(ogg_sync_buffer(&oy,og[1].header_len),og[1].header+28,
	     og[1].header_len-28);
      ogg_sync_wrote(&oy,og[1].header_len-28);
      if(ogg_sync_pageout(&oy,&og_de)>0)error();
      
      memcpy(ogg_sync_buffer(&oy,og[1].body_len),og[1].body,1000);
      ogg_sync_wrote(&oy,1000);
      if(ogg_sync_pageout(&oy,&og_de)>0)error();
      
      memcpy(ogg_sync_buffer(&oy,og[1].body_len),og[1].body+1000,
	     og[1].body_len-1000);
      ogg_sync_wrote(&oy,og[1].body_len-1000);
      if(ogg_sync_pageout(&oy,&og_de)<=0)error();
      
      fprintf(stderr,"ok.\n");
    }

    /* Test fractional page inputs: page + incomplete capture */
    {
      ogg_page og_de;
      fprintf(stderr,"Testing sync on 1+partial inputs... ");
      ogg_sync_reset(&oy); 

      memcpy(ogg_sync_buffer(&oy,og[1].header_len),og[1].header,
	     og[1].header_len);
      ogg_sync_wrote(&oy,og[1].header_len);

      memcpy(ogg_sync_buffer(&oy,og[1].body_len),og[1].body,
	     og[1].body_len);
      ogg_sync_wrote(&oy,og[1].body_len);

      memcpy(ogg_sync_buffer(&oy,og[1].header_len),og[1].header,
	     20);
      ogg_sync_wrote(&oy,20);
      if(ogg_sync_pageout(&oy,&og_de)<=0)error();
      if(ogg_sync_pageout(&oy,&og_de)>0)error();

      memcpy(ogg_sync_buffer(&oy,og[1].header_len),og[1].header+20,
	     og[1].header_len-20);
      ogg_sync_wrote(&oy,og[1].header_len-20);
      memcpy(ogg_sync_buffer(&oy,og[1].body_len),og[1].body,
	     og[1].body_len);
      ogg_sync_wrote(&oy,og[1].body_len);
      if(ogg_sync_pageout(&oy,&og_de)<=0)error();

      fprintf(stderr,"ok.\n");
    }
    
    /* Test recapture: garbage + page */
    {
      ogg_page og_de;
      fprintf(stderr,"Testing search for capture... ");
      ogg_sync_reset(&oy); 
      
      /* 'garbage' */
      memcpy(ogg_sync_buffer(&oy,og[1].body_len),og[1].body,
	     og[1].body_len);
      ogg_sync_wrote(&oy,og[1].body_len);

      memcpy(ogg_sync_buffer(&oy,og[1].header_len),og[1].header,
	     og[1].header_len);
      ogg_sync_wrote(&oy,og[1].header_len);

      memcpy(ogg_sync_buffer(&oy,og[1].body_len),og[1].body,
	     og[1].body_len);
      ogg_sync_wrote(&oy,og[1].body_len);

      memcpy(ogg_sync_buffer(&oy,og[2].header_len),og[2].header,
	     20);
      ogg_sync_wrote(&oy,20);
      if(ogg_sync_pageout(&oy,&og_de)>0)error();
      if(ogg_sync_pageout(&oy,&og_de)<=0)error();
      if(ogg_sync_pageout(&oy,&og_de)>0)error();

      memcpy(ogg_sync_buffer(&oy,og[2].header_len),og[2].header+20,
	     og[2].header_len-20);
      ogg_sync_wrote(&oy,og[2].header_len-20);
      memcpy(ogg_sync_buffer(&oy,og[2].body_len),og[2].body,
	     og[2].body_len);
      ogg_sync_wrote(&oy,og[2].body_len);
      if(ogg_sync_pageout(&oy,&og_de)<=0)error();

      fprintf(stderr,"ok.\n");
    }

    /* Test recapture: page + garbage + page */
    {
      ogg_page og_de;
      fprintf(stderr,"Testing recapture... ");
      ogg_sync_reset(&oy); 

      memcpy(ogg_sync_buffer(&oy,og[1].header_len),og[1].header,
	     og[1].header_len);
      ogg_sync_wrote(&oy,og[1].header_len);

      memcpy(ogg_sync_buffer(&oy,og[1].body_len),og[1].body,
	     og[1].body_len);
      ogg_sync_wrote(&oy,og[1].body_len);

      memcpy(ogg_sync_buffer(&oy,og[2].header_len),og[2].header,
	     og[2].header_len);
      ogg_sync_wrote(&oy,og[2].header_len);

      memcpy(ogg_sync_buffer(&oy,og[2].header_len),og[2].header,
	     og[2].header_len);
      ogg_sync_wrote(&oy,og[2].header_len);

      if(ogg_sync_pageout(&oy,&og_de)<=0)error();

      memcpy(ogg_sync_buffer(&oy,og[2].body_len),og[2].body,
	     og[2].body_len-5);
      ogg_sync_wrote(&oy,og[2].body_len-5);

      memcpy(ogg_sync_buffer(&oy,og[3].header_len),og[3].header,
	     og[3].header_len);
      ogg_sync_wrote(&oy,og[3].header_len);

      memcpy(ogg_sync_buffer(&oy,og[3].body_len),og[3].body,
	     og[3].body_len);
      ogg_sync_wrote(&oy,og[3].body_len);

      if(ogg_sync_pageout(&oy,&og_de)>0)error();
      if(ogg_sync_pageout(&oy,&og_de)<=0)error();

      fprintf(stderr,"ok.\n");
    }
  }    

  return(0);
}
예제 #24
0
파일: oggseek.c 프로젝트: brendonjustin/vlc
static int64_t find_first_page( demux_t *p_demux, int64_t i_pos1, int64_t i_pos2,
                                logical_stream_t *p_stream,
                                int64_t *pi_kframe, int64_t *pi_frame )
{
    int64_t i_result;
    int64_t i_granulepos;
    int64_t i_bytes_to_read = i_pos2 - i_pos1 + 1;
    int64_t i_bytes_read;
    int64_t i_pages_checked = 0;
    int64_t i_packets_checked;

    demux_sys_t *p_sys  = p_demux->p_sys;

    ogg_packet op;

    seek_byte( p_demux, i_pos1 );

    if ( i_pos1 == p_stream->i_data_start )
    {
        /* set a dummy granulepos at data_start */
        *pi_kframe = p_stream->i_keyframe_offset;
        *pi_frame = p_stream->i_keyframe_offset;

        p_sys->b_page_waiting = true;
        return p_sys->i_input_position;
    }

    if ( i_bytes_to_read > OGGSEEK_BYTES_TO_READ ) i_bytes_to_read = OGGSEEK_BYTES_TO_READ;

    while ( 1 )
    {

        if ( p_sys->i_input_position >= i_pos2 )
        {
            /* we reached the end and found no pages */
            *pi_frame=-1;
            return -1;
        }

        /* read next chunk */
        if ( ! ( i_bytes_read = get_data( p_demux, i_bytes_to_read ) ) )
        {
            /* EOF */
            *pi_frame = -1;
            return -1;
        }

        i_bytes_to_read = OGGSEEK_BYTES_TO_READ;

        i_result = ogg_sync_pageseek( &p_sys->oy, &p_sys->current_page );

        if ( i_result < 0 )
        {
            /* found a page, sync to page start */
            p_sys->i_input_position -= i_result;
            i_pos1 = p_sys->i_input_position;
            continue;
        }

        if ( i_result > 0 || ( i_result == 0 && p_sys->oy.fill > 3 &&
                               ! strncmp( (char *)p_sys->oy.data, "OggS" , 4 ) ) )
        {
            i_pos1 = p_sys->i_input_position;
            break;
        }

        p_sys->i_input_position += i_bytes_read;

    };

    seek_byte( p_demux, p_sys->i_input_position );
    ogg_stream_reset( &p_stream->os );

    while( 1 )
    {

        if ( p_sys->i_input_position >= i_pos2 )
        {
            /* reached the end of the search region and nothing was found */
            *pi_frame = -1;
            return p_sys->i_input_position;
        }

        p_sys->b_page_waiting = false;

        if ( ! ( i_result = oggseek_read_page( p_demux ) ) )
        {
            /* EOF */
            *pi_frame = -1;
            return p_sys->i_input_position;
        }

        // found a page
        if ( p_stream->os.serialno != ogg_page_serialno( &p_sys->current_page ) )
        {
            /* page is not for this stream */
            p_sys->i_input_position += i_result;
            if ( ! i_pages_checked ) i_pos1 = p_sys->i_input_position;
            continue;
        }


        ogg_stream_pagein( &p_stream->os, &p_sys->current_page );

        i_pages_checked++;
        i_packets_checked = 0;

        if ( ogg_stream_packetout( &p_stream->os, &op ) > 0 )
        {
            i_packets_checked++;
        }

        if ( i_packets_checked )
        {
            i_granulepos = ogg_page_granulepos( &p_sys->current_page );

            oggseek_theora_index_entry_add( p_stream, i_granulepos, i_pos1 );

            *pi_kframe =
                i_granulepos >> p_stream->i_granule_shift;

            *pi_frame = *pi_kframe +
                i_granulepos - ( *pi_kframe << p_stream->i_granule_shift );

            p_sys->b_page_waiting = true;
            return i_pos1;

        }

        /*  -> start of next page */
        p_sys->i_input_position += i_result;
    }
}
예제 #25
0
void test_pack(const int *pl, const int **headers){
  unsigned char *data=_ogg_malloc(1024*1024); /* for scripted test cases only */
  long inptr=0;
  long outptr=0;
  long deptr=0;
  long depacket=0;
  long granule_pos=7,pageno=0;
  int i,j,packets,pageout=0;
  int eosflag=0;
  int bosflag=0;

  ogg_stream_reset(&os_en);
  ogg_stream_reset(&os_de);
  ogg_sync_reset(&oy);

  for(packets=0;;packets++)if(pl[packets]==-1)break;

  for(i=0;i<packets;i++){
    /* construct a test packet */
    ogg_packet op;
    int len=pl[i];
    
    op.packet=data+inptr;
    op.bytes=len;
    op.e_o_s=(pl[i+1]<0?1:0);
    op.granulepos=granule_pos;

    granule_pos+=1024;

    for(j=0;j<len;j++)data[inptr++]=i+j;

    /* submit the test packet */
    ogg_stream_packetin(&os_en,&op);

    /* retrieve any finished pages */
    {
      ogg_page og;
      
      while(ogg_stream_pageout(&os_en,&og)){
	/* We have a page.  Check it carefully */

	fprintf(stderr,"%ld, ",pageno);

	if(headers[pageno]==NULL){
	  fprintf(stderr,"coded too many pages!\n");
	  exit(1);
	}

	check_page(data+outptr,headers[pageno],&og);

	outptr+=og.body_len;
	pageno++;

	/* have a complete page; submit it to sync/decode */

	{
	  ogg_page og_de;
	  ogg_packet op_de,op_de2;
	  char *buf=ogg_sync_buffer(&oy,og.header_len+og.body_len);
	  memcpy(buf,og.header,og.header_len);
	  memcpy(buf+og.header_len,og.body,og.body_len);
	  ogg_sync_wrote(&oy,og.header_len+og.body_len);

	  while(ogg_sync_pageout(&oy,&og_de)>0){
	    /* got a page.  Happy happy.  Verify that it's good. */
	    
	    check_page(data+deptr,headers[pageout],&og_de);
	    deptr+=og_de.body_len;
	    pageout++;

	    /* submit it to deconstitution */
	    ogg_stream_pagein(&os_de,&og_de);

	    /* packets out? */
	    while(ogg_stream_packetpeek(&os_de,&op_de2)>0){
	      ogg_stream_packetpeek(&os_de,NULL);
	      ogg_stream_packetout(&os_de,&op_de); /* just catching them all */
	      
	      /* verify peek and out match */
	      if(memcmp(&op_de,&op_de2,sizeof(op_de))){
		fprintf(stderr,"packetout != packetpeek! pos=%ld\n",
			depacket);
		exit(1);
	      }

	      /* verify the packet! */
	      /* check data */
	      if(memcmp(data+depacket,op_de.packet,op_de.bytes)){
		fprintf(stderr,"packet data mismatch in decode! pos=%ld\n",
			depacket);
		exit(1);
	      }
	      /* check bos flag */
	      if(bosflag==0 && op_de.b_o_s==0){
		fprintf(stderr,"b_o_s flag not set on packet!\n");
		exit(1);
	      }
	      if(bosflag && op_de.b_o_s){
		fprintf(stderr,"b_o_s flag incorrectly set on packet!\n");
		exit(1);
	      }
	      bosflag=1;
	      depacket+=op_de.bytes;
	      
	      /* check eos flag */
	      if(eosflag){
		fprintf(stderr,"Multiple decoded packets with eos flag!\n");
		exit(1);
	      }

	      if(op_de.e_o_s)eosflag=1;

	      /* check granulepos flag */
	      if(op_de.granulepos!=-1){
		fprintf(stderr," granule:%ld ",(long)op_de.granulepos);
	      }
	    }
	  }
	}
      }
    }
  }
  _ogg_free(data);
  if(headers[pageno]!=NULL){
    fprintf(stderr,"did not write last page!\n");
    exit(1);
  }
  if(headers[pageout]!=NULL){
    fprintf(stderr,"did not decode last page!\n");
    exit(1);
  }
  if(inptr!=outptr){
    fprintf(stderr,"encoded page data incomplete!\n");
    exit(1);
  }
  if(inptr!=deptr){
    fprintf(stderr,"decoded page data incomplete!\n");
    exit(1);
  }
  if(inptr!=depacket){
    fprintf(stderr,"decoded packet data incomplete!\n");
    exit(1);
  }
  if(!eosflag){
    fprintf(stderr,"Never got a packet with EOS set!\n");
    exit(1);
  }
  fprintf(stderr,"ok.\n");
}
예제 #26
0
파일: opus.c 프로젝트: ifroz/rockbox
static int speex_seek_page_granule(int64_t pos, int64_t curpos,
                                   ogg_sync_state *oy, ogg_stream_state *os)
{
    /* TODO: Someone may want to try to implement seek to packet, 
             instead of just to page (should be more accurate, not be any 
             faster) */

    int64_t crofs;
    int64_t *curbyteoffset = &crofs;
    *curbyteoffset = ci->curpos;
    int64_t curoffset;
    curoffset = *curbyteoffset;
    int64_t offset = 0;
    ogg_page og = {0,0,0,0};
    int64_t avgpagelen = -1;
    int64_t lastgranule = -1;
#if 0
    if(abs(pos-curpos)>10000 && headerssize>0 && curoffset-headerssize>10000) {
        /* if seeking for more that 10sec,
           headersize is known & more than 10kb is played,
           try to guess a place to seek from the number of
           bytes playe for this position, this works best when 
           the bitrate is relativly constant.
         */

        curoffset = (((*curbyteoffset-headerssize) * pos)/curpos)*98/100;
        if (curoffset < 0)
            curoffset=0;

        //int64_t toffset=curoffset;

        ci->seek_buffer(curoffset);

        ogg_sync_reset(oy);

        offset = get_next_page(oy,&og,-1);

        if (offset < 0) { /* could not find new page,use old offset */
            LOGF("Seek/guess/fault:%lld->-<-%d,%lld:%lld,%d,%ld,%d\n",
                 curpos,0,pos,offset,0,
                 ci->curpos,/*stream_length*/0);

            curoffset = *curbyteoffset;

            ci->seek_buffer(curoffset);

            ogg_sync_reset(oy);
        } else {
            if (ogg_page_granulepos(&og) == 0 && pos > 5000) {
                LOGF("SEEK/guess/fault:%lld->-<-%lld,%lld:%lld,%d,%ld,%d\n",
                     curpos,ogg_page_granulepos(&og),pos,
                     offset,0,ci->curpos,/*stream_length*/0);

                curoffset = *curbyteoffset;

                ci->seek_buffer(curoffset);

                ogg_sync_reset(oy);
            } else {
                curoffset = offset;
                curpos = ogg_page_granulepos(&og);
            }
        }
    }
#endif
    /* which way do we want to seek? */
    if (pos == 0) {  /* start */
        *curbyteoffset = 0;
        ci->seek_buffer(*curbyteoffset);
        ogg_sync_reset(oy);
        ogg_stream_reset(os);
        return 0;
    } else if (curpos > pos) {  /* backwards */
        offset = seek_backwards(oy,&og,pos);

        if (offset > 0) {
            *curbyteoffset = curoffset;
            return 1;
        }
    } else {  /* forwards */

        while ( (offset = get_next_page(oy,&og,-1)) > 0) {
            if (lastgranule != -1) {
               if (avgpagelen < 0)
                   avgpagelen = (ogg_page_granulepos(&og) - lastgranule);
               else
                   avgpagelen = ((ogg_page_granulepos(&og) - lastgranule)
                                 + avgpagelen) / 2;
            }

            lastgranule = ogg_page_granulepos(&og);

            if ( ((lastgranule - (avgpagelen/4)) < pos && ( lastgranule + 
                  avgpagelen + (avgpagelen / 4)) > pos) ||
                 lastgranule > pos) {

                /*wanted offset found Yeay!*/

                *curbyteoffset = offset;

                return offset;
            }
        }
    }

    ci->seek_buffer(*curbyteoffset);

    ogg_sync_reset(oy);

    LOGF("Seek failed:%lld\n", offset);

    return -1;
}
예제 #27
0
int ogg_stream_reset_serialno(ogg_stream_state *os,int serialno){
  ogg_stream_reset(os);
  os->serialno=serialno;
  return(0);
}
예제 #28
0
static int _process_packet(OggVorbis_File *vf,int readp){
  ogg_page og;

  /* handle one packet.  Try to fetch it from current stream state */
  /* extract packets from page */
  while(1){
    
    /* process a packet if we can.  If the machine isn't loaded,
       neither is a page */
    if(vf->ready_state==INITSET){
      while(1) {
      	ogg_packet op;
	int result=ogg_stream_packetout(&vf->os,&op);
	ogg_int64_t granulepos;

	if(result==-1)return(OV_HOLE); /* hole in the data. */
	if(result>0){
	  /* got a packet.  process it */
	  granulepos=op.granulepos;
	  if(!vorbis_synthesis(&vf->vb,&op)){ /* lazy check for lazy
                                                 header handling.  The
                                                 header packets aren't
                                                 audio, so if/when we
                                                 submit them,
                                                 vorbis_synthesis will
                                                 reject them */

	    /* suck in the synthesis data and track bitrate */
	    {
	      int oldsamples=vorbis_synthesis_pcmout(&vf->vd,NULL);
	      vorbis_synthesis_blockin(&vf->vd,&vf->vb);
	      vf->samptrack+=vorbis_synthesis_pcmout(&vf->vd,NULL)-oldsamples;
	      vf->bittrack+=op.bytes*8;
	    }
	  
	    /* update the pcm offset. */
	    if(granulepos!=-1 && !op.e_o_s){
	      int link=(vf->seekable?vf->current_link:0);
	      int i,samples;
	    
	      /* this packet has a pcm_offset on it (the last packet
	         completed on a page carries the offset) After processing
	         (above), we know the pcm position of the *last* sample
	         ready to be returned. Find the offset of the *first*

	         As an aside, this trick is inaccurate if we begin
	         reading anew right at the last page; the end-of-stream
	         granulepos declares the last frame in the stream, and the
	         last packet of the last page may be a partial frame.
	         So, we need a previous granulepos from an in-sequence page
	         to have a reference point.  Thus the !op.e_o_s clause
	         above */
	    
	      samples=vorbis_synthesis_pcmout(&vf->vd,NULL);
	    
	      granulepos-=samples;
	      for(i=0;i<link;i++)
	        granulepos+=vf->pcmlengths[i];
	      vf->pcm_offset=granulepos;
	    }
	    return(1);
	  }
	}
	else 
	  break;
      }
    }

    if(vf->ready_state>=OPENED){
      if(!readp)return(0);
      if(_get_next_page(vf,&og,-1)<0)return(OV_EOF); /* eof. 
							leave unitialized */
      /* bitrate tracking; add the header's bytes here, the body bytes
	 are done by packet above */
      vf->bittrack+=og.header_len*8;
      
      /* has our decoding just traversed a bitstream boundary? */
      if(vf->ready_state==INITSET){
	if(vf->current_serialno!=ogg_page_serialno(&og)){
	  _decode_clear(vf);
	  
	  if(!vf->seekable){
	    vorbis_info_clear(vf->vi);
	    vorbis_comment_clear(vf->vc);
	  }
	}
      }
    }

    /* Do we need to load a new machine before submitting the page? */
    /* This is different in the seekable and non-seekable cases.  

       In the seekable case, we already have all the header
       information loaded and cached; we just initialize the machine
       with it and continue on our merry way.

       In the non-seekable (streaming) case, we'll only be at a
       boundary if we just left the previous logical bitstream and
       we're now nominally at the header of the next bitstream
    */

    if(vf->ready_state!=INITSET){ 
      int link;

      if(vf->ready_state<STREAMSET){
	if(vf->seekable){
	  vf->current_serialno=ogg_page_serialno(&og);
	  
	  /* match the serialno to bitstream section.  We use this rather than
	     offset positions to avoid problems near logical bitstream
	     boundaries */
	  for(link=0;link<vf->links;link++)
	    if(vf->serialnos[link]==vf->current_serialno)break;
	  if(link==vf->links)return(OV_EBADLINK); /* sign of a bogus
						     stream.  error out,
						     leave machine
						     uninitialized */
	  
	  vf->current_link=link;
	  
	  ogg_stream_init(&vf->os,vf->current_serialno);
	  ogg_stream_reset(&vf->os); 
	  vf->ready_state=STREAMSET;
	  
	}else{
	  /* we're streaming */
	  /* fetch the three header packets, build the info struct */
	  
	  int ret=_fetch_headers(vf,vf->vi,vf->vc,&vf->current_serialno,&og);
	  if(ret)return(ret);
	  vf->current_link++;
	  link=0;
	}
      }
      
      _make_decode_ready(vf);
    }
    ogg_stream_pagein(&vf->os,&og);
  }
}