Exemple #1
0
static int libx265_encode_frame(AVCodecContext *avctx, AVPacket *pkt,
                                const AVFrame *pic, int *got_packet)
{
    libx265Context *ctx = avctx->priv_data;
    x265_picture x265pic;
    x265_picture x265pic_out = { { 0 } };
    x265_nal *nal;
    uint8_t *dst;
    int payload = 0;
    int nnal;
    int ret;
    int i;

    x265_picture_init(ctx->params, &x265pic);

    if (pic) {
        for (i = 0; i < 3; i++) {
           x265pic.planes[i] = pic->data[i];
           x265pic.stride[i] = pic->linesize[i];
        }

        x265pic.pts      = pic->pts;
        x265pic.bitDepth = av_pix_fmt_desc_get(avctx->pix_fmt)->comp[0].depth_minus1 + 1;
    }

    ret = x265_encoder_encode(ctx->encoder, &nal, &nnal,
                              pic ? &x265pic : NULL, &x265pic_out);
    if (ret < 0)
        return AVERROR_UNKNOWN;

    if (!nnal)
        return 0;

    for (i = 0; i < nnal; i++)
        payload += nal[i].sizeBytes;

    ret = ff_alloc_packet(pkt, payload);
    if (ret < 0) {
        av_log(avctx, AV_LOG_ERROR, "Error getting output packet.\n");
        return ret;
    }
    dst = pkt->data;

    for (i = 0; i < nnal; i++) {
        memcpy(dst, nal[i].payload, nal[i].sizeBytes);
        dst += nal[i].sizeBytes;

        if (is_keyframe(nal[i].type))
            pkt->flags |= AV_PKT_FLAG_KEY;
    }

    pkt->pts = x265pic_out.pts;
    pkt->dts = x265pic_out.dts;

    *got_packet = 1;
    return 0;
}
static GstFlowReturn
theora_parse_drain_queue (GstTheoraParse * parse, gint64 granulepos)
{
  GstFlowReturn ret = GST_FLOW_OK;
  gint64 keyframe, prev_frame, frame;

  parse_granulepos (parse, granulepos, &keyframe, &frame);

  GST_DEBUG ("draining queue of length %d",
      g_queue_get_length (parse->buffer_queue));

  GST_LOG_OBJECT (parse, "gp %" G_GINT64_FORMAT ", kf %" G_GINT64_FORMAT
      ", frame %" G_GINT64_FORMAT, granulepos, keyframe, frame);

  prev_frame = frame - g_queue_get_length (parse->buffer_queue);

  GST_LOG_OBJECT (parse,
      "new prev %" G_GINT64_FORMAT ", prev %" G_GINT64_FORMAT, prev_frame,
      parse->prev_frame);

  if (prev_frame < parse->prev_frame) {
    GST_WARNING ("jumped %" G_GINT64_FORMAT
        " frames backwards! not sure what to do here",
        parse->prev_frame - prev_frame);
    parse->prev_frame = prev_frame;
  } else if (prev_frame > parse->prev_frame) {
    GST_INFO ("discontinuity detected (%" G_GINT64_FORMAT
        " frames)", prev_frame - parse->prev_frame);
    if (keyframe <= prev_frame && keyframe > parse->prev_keyframe)
      parse->prev_keyframe = keyframe;
    parse->prev_frame = prev_frame;
  }

  while (!g_queue_is_empty (parse->buffer_queue)) {
    GstBuffer *buf;

    parse->prev_frame++;
    g_assert (parse->prev_frame >= 0);

    buf = GST_BUFFER_CAST (g_queue_pop_head (parse->buffer_queue));

    if (is_keyframe (buf))
      /* we have a keyframe */
      parse->prev_keyframe = parse->prev_frame;
    else
      GST_BUFFER_FLAGS (buf) |= GST_BUFFER_FLAG_DELTA_UNIT;

    ret = theora_parse_push_buffer (parse, buf, parse->prev_keyframe,
        parse->prev_frame);

    if (ret != GST_FLOW_OK)
      goto done;
  }

done:
  return ret;
}
static GstFlowReturn
theora_parse_drain_queue_prematurely (GstTheoraParse * parse)
{
  GstFlowReturn ret = GST_FLOW_OK;

  /* got an EOS event, make sure to push out any buffers that were in the queue
   * -- won't normally be the case, but this catches the
   * didn't-get-a-granulepos-on-the-last-packet case. Assuming a continuous
   * stream. */

  GST_DEBUG_OBJECT (parse, "got EOS, draining queue");

  /* if we get an eos before pushing the streamheaders, drain our events before
   * eos */
  theora_parse_drain_event_queue (parse);

  while (!g_queue_is_empty (parse->buffer_queue)) {
    GstBuffer *buf;

    buf = GST_BUFFER_CAST (g_queue_pop_head (parse->buffer_queue));

    parse->prev_frame++;

    if (is_keyframe (buf))
      /* we have a keyframe */
      parse->prev_keyframe = parse->prev_frame;
    else
      GST_BUFFER_FLAGS (buf) |= GST_BUFFER_FLAG_DELTA_UNIT;

    if (parse->prev_keyframe < 0) {
      if (GST_BUFFER_OFFSET_END_IS_VALID (buf)) {
        parse_granulepos (parse, GST_BUFFER_OFFSET_END (buf),
            &parse->prev_keyframe, NULL);
      } else {
        /* No previous keyframe known; can't extract one from this frame. That
         * means we can't do any valid output for this frame, just continue to
         * the next frame.
         */
        gst_buffer_unref (buf);
        continue;
      }
    }

    ret = theora_parse_push_buffer (parse, buf, parse->prev_keyframe,
        parse->prev_frame);

    if (ret != GST_FLOW_OK)
      goto done;
  }

done:
  return ret;
}
static int libx265_encode_frame(AVCodecContext *avctx, AVPacket *pkt,
                                const AVFrame *pic, int *got_packet)
{
    libx265Context *ctx = avctx->priv_data;
    x265_picture x265pic;
    x265_picture x265pic_out = { 0 };
    x265_nal *nal;
    uint8_t *dst;
    int payload = 0;
    int nnal;
    int ret;
    int i;

    ctx->api->picture_init(ctx->params, &x265pic);

    if (pic) {
        for (i = 0; i < 3; i++) {
           x265pic.planes[i] = pic->data[i];
           x265pic.stride[i] = pic->linesize[i];
        }

        x265pic.pts      = pic->pts;
        x265pic.bitDepth = av_pix_fmt_desc_get(avctx->pix_fmt)->comp[0].depth;

        x265pic.sliceType = pic->pict_type == AV_PICTURE_TYPE_I ?
                                              (ctx->forced_idr ? X265_TYPE_IDR : X265_TYPE_I) :
                            pic->pict_type == AV_PICTURE_TYPE_P ? X265_TYPE_P :
                            pic->pict_type == AV_PICTURE_TYPE_B ? X265_TYPE_B :
                            X265_TYPE_AUTO;
    }

    ret = ctx->api->encoder_encode(ctx->encoder, &nal, &nnal,
                                   pic ? &x265pic : NULL, &x265pic_out);
    if (ret < 0)
        return AVERROR_EXTERNAL;

    if (!nnal)
        return 0;

    for (i = 0; i < nnal; i++)
        payload += nal[i].sizeBytes;

    ret = ff_alloc_packet2(avctx, pkt, payload, payload);
    if (ret < 0) {
        av_log(avctx, AV_LOG_ERROR, "Error getting output packet.\n");
        return ret;
    }
    dst = pkt->data;

    for (i = 0; i < nnal; i++) {
        memcpy(dst, nal[i].payload, nal[i].sizeBytes);
        dst += nal[i].sizeBytes;

        if (is_keyframe(nal[i].type))
            pkt->flags |= AV_PKT_FLAG_KEY;
    }

    pkt->pts = x265pic_out.pts;
    pkt->dts = x265pic_out.dts;

#if FF_API_CODED_FRAME
FF_DISABLE_DEPRECATION_WARNINGS
    switch (x265pic_out.sliceType) {
    case X265_TYPE_IDR:
    case X265_TYPE_I:
        avctx->coded_frame->pict_type = AV_PICTURE_TYPE_I;
        break;
    case X265_TYPE_P:
        avctx->coded_frame->pict_type = AV_PICTURE_TYPE_P;
        break;
    case X265_TYPE_B:
        avctx->coded_frame->pict_type = AV_PICTURE_TYPE_B;
        break;
    }
FF_ENABLE_DEPRECATION_WARNINGS
#endif

#if X265_BUILD >= 130
    if (x265pic_out.sliceType == X265_TYPE_B)
#else
    if (x265pic_out.frameData.sliceType == 'b')
#endif
        pkt->flags |= AV_PKT_FLAG_DISPOSABLE;

    *got_packet = 1;
    return 0;
}