static int libschroedinger_decode_frame(AVCodecContext *avctx,
                                        void *data, int *got_frame,
                                        AVPacket *avpkt)
{
    const uint8_t *buf = avpkt->data;
    int buf_size = avpkt->size;
    int64_t pts  = avpkt->pts;
    SchroTag *tag;

    SchroDecoderParams *p_schro_params = avctx->priv_data;
    SchroDecoder *decoder = p_schro_params->decoder;
    SchroBuffer *enc_buf;
    SchroFrame* frame;
    AVFrame *avframe = data;
    int state;
    int go = 1;
    int outer = 1;
    SchroParseUnitContext parse_ctx;
    LibSchroFrameContext *framewithpts = NULL;

    *got_frame = 0;

    parse_context_init(&parse_ctx, buf, buf_size);
    if (!buf_size) {
        if (!p_schro_params->eos_signalled) {
            state = schro_decoder_push_end_of_stream(decoder);
            p_schro_params->eos_signalled = 1;
        }
    }

    /* Loop through all the individual parse units in the input buffer */
    do {
        if ((enc_buf = find_next_parse_unit(&parse_ctx))) {
            /* Set Schrotag with the pts to be recovered after decoding*/
            enc_buf->tag = schro_tag_new(av_malloc(sizeof(int64_t)), av_free);
            if (!enc_buf->tag->value) {
                av_log(avctx, AV_LOG_ERROR, "Unable to allocate SchroTag\n");
                return AVERROR(ENOMEM);
            }
            AV_WN(64, enc_buf->tag->value, pts);
            /* Push buffer into decoder. */
            if (SCHRO_PARSE_CODE_IS_PICTURE(enc_buf->data[4]) &&
                SCHRO_PARSE_CODE_NUM_REFS(enc_buf->data[4]) > 0)
                avctx->has_b_frames = 1;
            state = schro_decoder_push(decoder, enc_buf);
            if (state == SCHRO_DECODER_FIRST_ACCESS_UNIT)
                libschroedinger_handle_first_access_unit(avctx);
            go = 1;
        } else
            outer = 0;

        while (go) {
            /* Parse data and process result. */
            state = schro_decoder_wait(decoder);
            switch (state) {
            case SCHRO_DECODER_FIRST_ACCESS_UNIT:
                libschroedinger_handle_first_access_unit(avctx);
                break;

            case SCHRO_DECODER_NEED_BITS:
                /* Need more input data - stop iterating over what we have. */
                go = 0;
                break;

            case SCHRO_DECODER_NEED_FRAME:
                /* Decoder needs a frame - create one and push it in. */
                frame = ff_create_schro_frame(avctx,
                                              p_schro_params->frame_format);
                if (!frame)
                    return AVERROR(ENOMEM);
                schro_decoder_add_output_picture(decoder, frame);
                break;

            case SCHRO_DECODER_OK:
                /* Pull a frame out of the decoder. */
                tag   = schro_decoder_get_picture_tag(decoder);
                frame = schro_decoder_pull(decoder);

                if (frame) {
                    /* Add relation between schroframe and pts. */
                    framewithpts = av_malloc(sizeof(LibSchroFrameContext));
                    if (!framewithpts) {
                        av_log(avctx, AV_LOG_ERROR, "Unable to allocate FrameWithPts\n");
                        return AVERROR(ENOMEM);
                    }
                    framewithpts->frame = frame;
                    framewithpts->pts   = AV_RN64(tag->value);
                    ff_schro_queue_push_back(&p_schro_params->dec_frame_queue,
                                             framewithpts);
                }
                break;
            case SCHRO_DECODER_EOS:
                go = 0;
                p_schro_params->eos_pulled = 1;
                schro_decoder_reset(decoder);
                outer = 0;
                break;

            case SCHRO_DECODER_ERROR:
                return -1;
                break;
            }
        }
    } while (outer);

    /* Grab next frame to be returned from the top of the queue. */
    framewithpts = ff_schro_queue_pop(&p_schro_params->dec_frame_queue);

    if (framewithpts && framewithpts->frame) {
        int ret;

        if ((ret = ff_get_buffer(avctx, avframe, 0)) < 0)
            return ret;

        memcpy(avframe->data[0],
               framewithpts->frame->components[0].data,
               framewithpts->frame->components[0].length);

        memcpy(avframe->data[1],
               framewithpts->frame->components[1].data,
               framewithpts->frame->components[1].length);

        memcpy(avframe->data[2],
               framewithpts->frame->components[2].data,
               framewithpts->frame->components[2].length);

        /* Fill frame with current buffer data from Schroedinger. */
        avframe->pkt_pts = framewithpts->pts;
        avframe->linesize[0] = framewithpts->frame->components[0].stride;
        avframe->linesize[1] = framewithpts->frame->components[1].stride;
        avframe->linesize[2] = framewithpts->frame->components[2].stride;

        *got_frame      = 1;

        /* Now free the frame resources. */
        libschroedinger_decode_frame_free(framewithpts->frame);
        av_free(framewithpts);
    } else {
        data       = NULL;
        *got_frame = 0;
    }
    return buf_size;
}
示例#2
0
void
decode (FILE *file)
{
  SchroDecoder *decoder;
  SchroBuffer *buffer;
  SchroVideoFormat *format = NULL;
  SchroFrame *frame;
  int picture_number;
  int go;
  int it;
  int eos = FALSE;
  void *packet;
  int size;
  int ret;
  int parse_code;

  decoder = schro_decoder_new();
  schro_decoder_set_picture_order (decoder, SCHRO_DECODER_PICTURE_ORDER_CODED);

  while(!eos) {
    ret = parse_packet (file, &packet, &size);
    if (!ret) {
      exit(1);
    }

    if (size == 0) {
      schro_decoder_push_end_of_stream (decoder);
    } else {
      parse_code = ((uint8_t *)packet)[4];

      buffer = schro_buffer_new_with_data (packet, size);
      buffer->free = buffer_free;
      buffer->priv = packet;

      printf("pushing 0x%02x size %d\n", parse_code, size);

      if (SCHRO_PARSE_CODE_IS_PICTURE (parse_code)) {
        frame = schro_frame_new_and_alloc (NULL,
            schro_params_get_frame_format(8, format->chroma_format),
            format->width, format->height);
        schro_decoder_add_output_picture (decoder, frame);
      }

      it = schro_decoder_push (decoder, buffer);
      if (it == SCHRO_DECODER_FIRST_ACCESS_UNIT) {
        format = schro_decoder_get_video_format (decoder);
      }

      if (!SCHRO_PARSE_CODE_IS_PICTURE (parse_code)) {
        continue;
      }
    }

    go = 1;
    while (go) {
      it = schro_decoder_wait (decoder);

      switch (it) {
        case SCHRO_DECODER_NEED_BITS:
          go = 0;
          break;
        case SCHRO_DECODER_NEED_FRAME:
          frame = schro_frame_new_and_alloc (NULL,
              schro_params_get_frame_format(8, format->chroma_format),
              format->width, format->height);
          schro_decoder_add_output_picture (decoder, frame);
          break;
        case SCHRO_DECODER_OK:
          picture_number = schro_decoder_get_picture_number (decoder);
          frame = schro_decoder_pull (decoder);
          printf("got frame %p, picture number %d\n", frame,
              picture_number);

          if (frame) {
            schro_frame_unref (frame);
          }
          go = 0;
          break;
        case SCHRO_DECODER_EOS:
          printf("got eos\n");
          eos = TRUE;
          go = 0;
          break;
        case SCHRO_DECODER_STALLED:
          printf("stall\n");
          go = 0;
          break;
        case SCHRO_DECODER_ERROR:
          exit(0);
          break;
      }
    }
  }

  printf("freeing decoder\n");
  schro_decoder_free (decoder);
  free(format);
}
static int libschroedinger_decode_frame(AVCodecContext *avccontext,
                                        void *data, int *data_size,
                                        AVPacket *avpkt)
{
    const uint8_t *buf = avpkt->data;
    int buf_size = avpkt->size;

    FfmpegSchroDecoderParams *p_schro_params = avccontext->priv_data;
    SchroDecoder *decoder = p_schro_params->decoder;
    SchroVideoFormat *format;
    AVPicture *picture = data;
    SchroBuffer *enc_buf;
    SchroFrame* frame;
    int state;
    int go = 1;
    int outer = 1;
    FfmpegSchroParseUnitContext parse_ctx;

    *data_size = 0;

    FfmpegSchroParseContextInit(&parse_ctx, buf, buf_size);
    if (!buf_size) {
        if (!p_schro_params->eos_signalled) {
            state = schro_decoder_push_end_of_stream(decoder);
            p_schro_params->eos_signalled = 1;
        }
    }

    /* Loop through all the individual parse units in the input buffer */
    do {
        if ((enc_buf = FfmpegFindNextSchroParseUnit(&parse_ctx))) {
            /* Push buffer into decoder. */
            if (SCHRO_PARSE_CODE_IS_PICTURE(enc_buf->data[4]) &&
                SCHRO_PARSE_CODE_NUM_REFS(enc_buf->data[4]) > 0)
                avccontext->has_b_frames = 1;
            state = schro_decoder_push(decoder, enc_buf);
            if (state == SCHRO_DECODER_FIRST_ACCESS_UNIT)
                libschroedinger_handle_first_access_unit(avccontext);
            go = 1;
        } else
            outer = 0;
        format = p_schro_params->format;

        while (go) {
            /* Parse data and process result. */
            state = schro_decoder_wait(decoder);
            switch (state) {
            case SCHRO_DECODER_FIRST_ACCESS_UNIT:
                libschroedinger_handle_first_access_unit(avccontext);
                break;

            case SCHRO_DECODER_NEED_BITS:
                /* Need more input data - stop iterating over what we have. */
                go = 0;
                break;

            case SCHRO_DECODER_NEED_FRAME:
                /* Decoder needs a frame - create one and push it in. */
                frame = ff_create_schro_frame(avccontext,
                                              p_schro_params->frame_format);
                schro_decoder_add_output_picture(decoder, frame);
                break;

            case SCHRO_DECODER_OK:
                /* Pull a frame out of the decoder. */
                frame = schro_decoder_pull(decoder);

                if (frame)
                    ff_dirac_schro_queue_push_back(&p_schro_params->dec_frame_queue,
                                                   frame);
                break;
            case SCHRO_DECODER_EOS:
                go = 0;
                p_schro_params->eos_pulled = 1;
                schro_decoder_reset(decoder);
                outer = 0;
                break;

            case SCHRO_DECODER_ERROR:
                return -1;
                break;
            }
        }
    } while (outer);

    /* Grab next frame to be returned from the top of the queue. */
    frame = ff_dirac_schro_queue_pop(&p_schro_params->dec_frame_queue);

    if (frame) {
        memcpy(p_schro_params->dec_pic.data[0],
               frame->components[0].data,
               frame->components[0].length);

        memcpy(p_schro_params->dec_pic.data[1],
               frame->components[1].data,
               frame->components[1].length);

        memcpy(p_schro_params->dec_pic.data[2],
               frame->components[2].data,
               frame->components[2].length);

        /* Fill picture with current buffer data from Schroedinger. */
        avpicture_fill(picture, p_schro_params->dec_pic.data[0],
                       avccontext->pix_fmt,
                       avccontext->width, avccontext->height);

        *data_size = sizeof(AVPicture);

        /* Now free the frame resources. */
        libschroedinger_decode_frame_free(frame);
    }
    return buf_size;
}
示例#4
0
static int libschroedinger_decode_frame(AVCodecContext *avccontext,
                                        void *data, int *data_size,
                                        const uint8_t *buf, int buf_size)
{

    FfmpegSchroDecoderParams *p_schro_params = avccontext->priv_data;
    SchroDecoder *decoder = p_schro_params->decoder;
    SchroVideoFormat *format;
    AVPicture *picture = data;
    SchroBuffer *enc_buf;
    SchroFrame* frame;
    int state;
    int go = 1;

    *data_size = 0;

    if (buf_size>0) {
        unsigned char *in_buf = av_malloc(buf_size);
        memcpy (in_buf, buf, buf_size);
        enc_buf = schro_buffer_new_with_data (in_buf, buf_size);
        enc_buf->free = libschroedinger_decode_buffer_free;
        enc_buf->priv = in_buf;
        /* Push buffer into decoder. */
        state = schro_decoder_push (decoder, enc_buf);
        if (state == SCHRO_DECODER_FIRST_ACCESS_UNIT)
            libschroedinger_handle_first_access_unit(avccontext);
    } else {
        if (!p_schro_params->eos_signalled) {
            state = schro_decoder_push_end_of_stream(decoder);
            p_schro_params->eos_signalled = 1;
        }
    }

    format = p_schro_params->format;

    while (go) {
        /* Parse data and process result. */
        state = schro_decoder_wait (decoder);
        switch (state)
        {
        case SCHRO_DECODER_FIRST_ACCESS_UNIT:
            libschroedinger_handle_first_access_unit (avccontext);
            break;

        case SCHRO_DECODER_NEED_BITS:
            /* Need more input data - stop iterating over what we have. */
            go = 0;
            break;

        case SCHRO_DECODER_NEED_FRAME:
            /* Decoder needs a frame - create one and push it in. */

            frame = schro_frame_new_and_alloc(NULL,
                                              p_schro_params->frame_format,
                                              format->width,
                                              format->height);
            schro_decoder_add_output_picture (decoder, frame);
            break;

        case SCHRO_DECODER_OK:
            /* Pull a frame out of the decoder. */
            frame = schro_decoder_pull (decoder);

            if (frame) {
                ff_dirac_schro_queue_push_back(
                                             &p_schro_params->dec_frame_queue,
                                             frame);
            }
            break;
        case SCHRO_DECODER_EOS:
            go = 0;
            p_schro_params->eos_pulled = 1;
            schro_decoder_reset (decoder);
            break;

        case SCHRO_DECODER_ERROR:
            return -1;
            break;
        }
    }

    /* Grab next frame to be returned from the top of the queue. */
    frame = ff_dirac_schro_queue_pop(&p_schro_params->dec_frame_queue);

    if (frame != NULL) {
        memcpy (p_schro_params->dec_pic.data[0],
                frame->components[0].data,
                frame->components[0].length);

        memcpy (p_schro_params->dec_pic.data[1],
                frame->components[1].data,
                frame->components[1].length);

        memcpy (p_schro_params->dec_pic.data[2],
                frame->components[2].data,
                frame->components[2].length);

        /* Fill picture with current buffer data from Schroedinger. */
        avpicture_fill(picture, p_schro_params->dec_pic.data[0],
                       avccontext->pix_fmt,
                       avccontext->width, avccontext->height);

        *data_size = sizeof(AVPicture);

        /* Now free the frame resources. */
        libschroedinger_decode_frame_free (frame);
    }
    return buf_size;
}
示例#5
0
static gavl_source_status_t decode_picture(bgav_stream_t * s)
  {
  int state;
  SchroBuffer * buf = NULL;
  SchroFrame * frame = NULL;
  schroedinger_priv_t* priv;
  gavl_source_status_t st;
  priv = s->decoder_priv;

  while(1)
    {
    state = schro_decoder_wait(priv->dec);
    
    switch (state)
      {
      case SCHRO_DECODER_FIRST_ACCESS_UNIT:
        //        fprintf(stderr, "State: SCHRO_DECODER_FIRST_ACCESS_UNIT\n");

        get_format(s);
        
        // libschroedinger_handle_first_access_unit (avccontext);
        break;

      case SCHRO_DECODER_NEED_BITS:
        /* Need more input data - stop iterating over what we have. */
        //        fprintf(stderr, "State: SCHRO_DECODER_NEED_BITS\n");

        st = get_data(s, &buf);
#if 1
        if(st == GAVL_SOURCE_OK)
          {
          state = schro_decoder_push(priv->dec, buf);
          if(state == SCHRO_DECODER_FIRST_ACCESS_UNIT)
            {
            //            fprintf(stderr, "State: SCHRO_DECODER_FIRST_ACCESS_UNIT\n");
            get_format(s);
            }
          }
#endif
        break;

      case SCHRO_DECODER_NEED_FRAME:
        /* Decoder needs a frame - create one and push it in. */
        //        fprintf(stderr, "State: SCHRO_DECODER_NEED_FRAME\n");
        frame = schro_frame_new_and_alloc(NULL,
                                          priv->frame_format,
                                          s->data.video.format.frame_width,
                                          s->data.video.format.frame_height);
        schro_decoder_add_output_picture (priv->dec, frame);
        //     fprintf(stderr, "Need frame %p\n", frame);
        break;

      case SCHRO_DECODER_OK:

        // pic_num = schro_decoder_get_picture_number(priv->dec);

        /* Pull a frame out of the decoder. */
        //        fprintf(stderr, "State: SCHRO_DECODER_OK %d\n",
        //                schro_decoder_get_picture_number(priv->dec));
        
        // if(codec->dec_delay)
        //          {
        priv->dec_frame = schro_decoder_pull(priv->dec);
        //        fprintf(stderr, "Got frame %p\n", priv->dec_frame);
        
        return GAVL_SOURCE_OK;
          //          }
        break;
      case SCHRO_DECODER_EOS:
        //        fprintf(stderr, "State: SCHRO_DECODER_EOS\n");
        // p_schro_params->eos_pulled = 1;
        //        schro_decoder_reset (decoder);
        //        outer = 0;
        return GAVL_SOURCE_EOF;
        break;
      case SCHRO_DECODER_ERROR:
        //        fprintf(stderr, "State: SCHRO_DECODER_ERROR\n");
        return GAVL_SOURCE_EOF;
        break;
      }
    }
  return GAVL_SOURCE_EOF;
  }
示例#6
0
static bool
RunTest(int bit_depth)
{
	bool result = true;

	const int seq_len = 5;
	
	const int width = 100;
	const int height = 10;
	
	int luma_min = 16;
	int luma_max = 235;
	int chroma_zero = 128;
	
	schro_init();
	
	// set up encoder
	SchroEncoder *encoder = schro_encoder_new();
	
	schro_encoder_setting_set_double(encoder, "gop_structure", SCHRO_ENCODER_GOP_INTRA_ONLY);
	schro_encoder_setting_set_double(encoder, "rate_control", SCHRO_ENCODER_RATE_CONTROL_LOSSLESS);
	//schro_encoder_setting_set_double(encoder, "force_profile", SCHRO_ENCODER_PROFILE_VC2_SIMPLE);
	//schro_encoder_setting_set_double(encoder, "queue_depth", seq_len);
	//assert(seq_len <= SCHRO_LIMIT_FRAME_QUEUE_LENGTH);
	
	SchroVideoFormat *format = schro_encoder_get_video_format(encoder);
	
	if(format)
	{
		format->width = width;
		format->height = height;
		
		format->clean_width = format->width;
		format->clean_height = format->height;
		format->left_offset = 0;
		format->top_offset = 0;
		
		format->chroma_format = SCHRO_CHROMA_444;
		
		const SchroSignalRange range = (bit_depth == 12 ? SCHRO_SIGNAL_RANGE_12BIT_VIDEO :
										bit_depth == 10 ? SCHRO_SIGNAL_RANGE_10BIT_VIDEO :
										SCHRO_SIGNAL_RANGE_8BIT_VIDEO);
										
		schro_video_format_set_std_signal_range(format, range);
		
		luma_min = format->luma_offset;
		luma_max = format->luma_offset + format->luma_excursion;
		chroma_zero = format->chroma_offset;
		
		format->colour_primaries = SCHRO_COLOUR_PRIMARY_HDTV;
		format->colour_matrix = SCHRO_COLOUR_MATRIX_HDTV;
		format->transfer_function = SCHRO_TRANSFER_CHAR_TV_GAMMA;
		
		format->interlaced = false;
		
		format->frame_rate_numerator = 24;
		format->frame_rate_denominator = 1;
		
		format->aspect_ratio_numerator = 1;
		format->aspect_ratio_denominator = 1;
		
		schro_encoder_set_video_format(encoder, format);
		
		free(format);
	}
	else
		return false;
	
	schro_encoder_start(encoder);
	
	
	// create frame
	SchroFrame *start_frame = schro_frame_new_and_alloc(NULL, SCHRO_FRAME_FORMAT_U8_444, width, height);
	
	FillFrame<unsigned char>(start_frame, 16, 235, 128);
	
	const SchroFrameFormat schro_format = (bit_depth > 8 ? SCHRO_FRAME_FORMAT_S16_444 : SCHRO_FRAME_FORMAT_U8_444);

	SchroFrame *original_frame = schro_frame_new_and_alloc(NULL, schro_format, width, height);
	
	schro_frame_convert(original_frame, start_frame);
	
	
	
	SchroDecoder *decoder = schro_decoder_new();
	
	// push frames to encoder
	for(int t = 0; t < seq_len; t++)
	{
		SchroFrame *new_frame = schro_frame_dup(original_frame);
	
		schro_encoder_push_frame(encoder, new_frame);
	}
	
	
	
	// pull packets out of encoder, pass to decoder
	int packets_out = 0;
	
	while(packets_out < seq_len)
	{
		SchroStateEnum encoder_state = schro_encoder_wait(encoder);
		
		if(encoder_state == SCHRO_STATE_HAVE_BUFFER || encoder_state == SCHRO_STATE_END_OF_STREAM)
		{
			int n_decodable_frames = -1;
		
			SchroBuffer *buffer = schro_encoder_pull(encoder, &n_decodable_frames);
			
			if(buffer)
			{
				const int parse_code = buffer->data[4];
				
				if(SCHRO_PARSE_CODE_IS_SEQ_HEADER(parse_code) ||
					SCHRO_PARSE_CODE_IS_AUXILIARY_DATA(parse_code) ||
					SCHRO_PARSE_CODE_IS_PICTURE(parse_code))
				{
					schro_decoder_push(decoder, buffer);
					
					//schro_buffer_unref(buffer);
					
					if(SCHRO_PARSE_CODE_IS_PICTURE(parse_code))
					{
						packets_out++;
					}
				}
			}
		}
		else
		{
			assert(encoder_state == SCHRO_STATE_NEED_FRAME);
			assert(encoder_state != SCHRO_STATE_AGAIN); // yeah, redundant
		
			schro_encoder_end_of_stream(encoder);
		}
	}
	
	
	
	// pull frames out of decoder
	int frames_out = 0;
	
	while(frames_out < seq_len)
	{
		int decoder_state = schro_decoder_wait(decoder);
		
		if(decoder_state == SCHRO_DECODER_FIRST_ACCESS_UNIT)
		{
			SchroVideoFormat *format = schro_decoder_get_video_format(decoder);
			
			if(format)
			{
				assert(format->width == width);
				assert(format->height == height);
				
				assert(format->chroma_format == SCHRO_CHROMA_444);
				
				assert(format->luma_offset == luma_min);
				assert(format->luma_offset + format->luma_excursion == luma_max);
				assert(format->chroma_offset = chroma_zero);
				
				free(format);
			}
		}
		else if(decoder_state == SCHRO_DECODER_NEED_BITS)
		{
			schro_decoder_push_end_of_stream(decoder);
		}
		else if(decoder_state == SCHRO_DECODER_NEED_FRAME)
		{
			SchroFrame *decoder_frame = schro_frame_new_and_alloc(NULL, schro_format, width, height);
			
			schro_decoder_add_output_picture(decoder, decoder_frame);
		}
		else if(decoder_state == SCHRO_DECODER_OK || decoder_state == SCHRO_DECODER_EOS)
		{
			SchroFrame *decoder_frame = schro_decoder_pull(decoder);
			
			if(decoder_frame)
			{
				frames_out++;
			
				bool match = CompareFrames(decoder_frame, original_frame);
				
				//std::cout << (match ? "Match!" : "No Match!") << "  " << std::endl;
				
				if(!match)
				{
					// output doesn't match input, so print the values of the
					// first line of the first component to see what went in and out
					PrintFirstLine(original_frame);
					std::cout << "==========" << std::endl;
					PrintFirstLine(decoder_frame);
					std::cout << "==========" << std::endl;
				
					result = false;
				}
				
				schro_frame_unref(decoder_frame);
			}
		}
	}

	schro_frame_unref(original_frame);
	schro_frame_unref(start_frame);
	
	schro_decoder_free(decoder);
	schro_encoder_free(encoder);
	
	return result;
}
示例#7
0
static GstFlowReturn
gst_schro_dec_process_buffer (GstSchroDec *schro_dec, SchroBuffer *input_buffer)
{
  GstFlowReturn ret = GST_FLOW_OK;
  SchroFrame *frame;
  int size;
  int earliest_frame;
  GstBuffer *outbuf;
  int go = 1;

  if (input_buffer) {
    ret = schro_decoder_push (schro_dec->decoder, input_buffer);
    if (ret == SCHRO_DECODER_FIRST_ACCESS_UNIT) {
      handle_first_access_unit (schro_dec);
    }
  } else {
    ret = schro_decoder_push_end_of_stream (schro_dec->decoder);
  }

  if (schro_dec->have_access_unit) {
    earliest_frame = gst_util_uint64_scale (
        schro_dec->earliest_time - schro_dec->segment.start,
        schro_dec->fps_n, schro_dec->fps_d * GST_SECOND);

    GST_DEBUG("earliest frame %d", earliest_frame);
    schro_decoder_set_earliest_frame (schro_dec->decoder, earliest_frame);

    schro_decoder_set_skip_ratio (schro_dec->decoder,
        1/schro_dec->proportion);
  }

  while (go) {
    int it;

    it = schro_decoder_wait (schro_dec->decoder);

    switch (it) {
      case SCHRO_DECODER_FIRST_ACCESS_UNIT:
        handle_first_access_unit (schro_dec);
        break;
      case SCHRO_DECODER_NEED_BITS:
        go = 0;
        break;
      case SCHRO_DECODER_NEED_FRAME:
        size = get_buffer_size (schro_dec);
        ret = gst_pad_alloc_buffer_and_set_caps (schro_dec->srcpad,
            GST_BUFFER_OFFSET_NONE, size,
            GST_PAD_CAPS (schro_dec->srcpad), &outbuf);
        if (ret != GST_FLOW_OK) {
          GST_DEBUG("could not allocate buffer for pad");
          return ret;
        }
        frame = gst_schro_wrap_frame (schro_dec, outbuf);
        schro_decoder_add_output_picture (schro_dec->decoder, frame);
        break;
      case SCHRO_DECODER_OK:
        frame = schro_decoder_pull (schro_dec->decoder);

        if (frame) {
          if (frame->priv) {
            outbuf = frame->priv;
      
            if (schro_dec->discont) {
              GST_DEBUG("discont timestamp %" G_GINT64_FORMAT, 
                  GST_BUFFER_TIMESTAMP(outbuf));
              GST_BUFFER_FLAG_SET (outbuf, GST_BUFFER_FLAG_DISCONT);
              schro_dec->discont = FALSE;
            }
      
            GST_BUFFER_TIMESTAMP(outbuf) = gst_util_uint64_scale (
                schro_dec->n_frames, schro_dec->fps_d * GST_SECOND,
                schro_dec->fps_n) +
              schro_dec->timestamp_offset;
            GST_BUFFER_DURATION(outbuf) = gst_util_uint64_scale_int (GST_SECOND,
               schro_dec->fps_d, schro_dec->fps_n);

            gst_buffer_ref(outbuf);
            ret = gst_pad_push (schro_dec->srcpad, outbuf);
            if (ret != GST_FLOW_OK)
              return ret;
          } else {
            GST_DEBUG("skipped frame %d", schro_dec->n_frames);
          }
    
          schro_dec->n_frames++;
          schro_frame_unref (frame);
        }

        break;
      case SCHRO_DECODER_EOS:
        go = FALSE;
        break;
      case SCHRO_DECODER_ERROR:
        go = FALSE;
        GST_ERROR ("codec error");
        ret = GST_FLOW_ERROR;
        break;
    }
  }
  return ret;
}
示例#8
0
void
decode (FILE *file)
{
  SchroDecoder *decoder;
  SchroBuffer *buffer;
  SchroVideoFormat *format = NULL;
  SchroFrame *frame;
  int go;
  int it;
  int eos = FALSE;
  void *packet;
  int size;
  int ret;

  decoder = schro_decoder_new();

  while(!eos) {
    ret = parse_packet (file, &packet, &size);
    if (!ret) {
      exit(1);
    }

    if (size == 0) {
      schro_decoder_push_end_of_stream (decoder);
    } else {
      buffer = schro_buffer_new_with_data (packet, size);
      buffer->free = buffer_free;
      buffer->priv = packet;

      it = schro_decoder_push (decoder, buffer);
      if (it == SCHRO_DECODER_FIRST_ACCESS_UNIT) {
        format = schro_decoder_get_video_format (decoder);
      }
    }

    go = 1;
    while (go) {
      it = schro_decoder_wait (decoder);

      switch (it) {
        case SCHRO_DECODER_NEED_BITS:
          go = 0;
          break;
        case SCHRO_DECODER_NEED_FRAME:
          frame = schro_frame_new_and_alloc (NULL,
              schro_params_get_frame_format(8, format->chroma_format),
              format->width, format->height);
          schro_decoder_add_output_picture (decoder, frame);
          break;
        case SCHRO_DECODER_OK:
          frame = schro_decoder_pull (decoder);
          //printf("got frame %p\n", frame);

          if (frame) {
            //printf("picture number %d\n",
            //    schro_decoder_get_picture_number (decoder) - 1);

            schro_frame_unref (frame);
          }
          break;
        case SCHRO_DECODER_EOS:
          printf("got eos\n");
          eos = TRUE;
          go = 0;
          break;
        case SCHRO_DECODER_ERROR:
          exit(0);
          break;
      }
    }
  }

  printf("freeing decoder\n");
  schro_decoder_free (decoder);
  free(format);
}