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mpeg2: include start code into VA slice data buffer.

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Integrate the start code prefix in the slice data buffer that is submitted
to the hardware. VA-API specifies that slice_data_offset is the offset to
the first byte of slice data. And, for MPEG-2, slice() data begins with
the slice_start_code. Some VA driver implementations (EMGD) expect this.
This commit is contained in:
Gwenole Beauchesne 2012-08-24 18:41:47 +02:00
parent a8636b4310
commit 1fb8f4791f
1 changed files with 9 additions and 9 deletions
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18
gst-libs/gst/vaapi/gstvaapidecoder_mpeg2.c
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@ -504,7 +504,7 @@ decode_sequence(GstVaapiDecoderMpeg2 *decoder, guchar *buf, guint buf_size)
GstVaapiDecoderMpeg2Private * const priv = decoder->priv; GstVaapiDecoderMpeg2Private * const priv = decoder->priv;
GstMpegVideoSequenceHdr * const seq_hdr = &priv->seq_hdr; GstMpegVideoSequenceHdr * const seq_hdr = &priv->seq_hdr;
if (!gst_mpeg_video_parse_sequence_header(seq_hdr, buf, buf_size, 0)) { if (!gst_mpeg_video_parse_sequence_header(seq_hdr, buf, buf_size, 4)) {
GST_ERROR("failed to parse sequence header"); GST_ERROR("failed to parse sequence header");
return GST_VAAPI_DECODER_STATUS_ERROR_BITSTREAM_PARSER; return GST_VAAPI_DECODER_STATUS_ERROR_BITSTREAM_PARSER;
} }
@ -532,7 +532,7 @@ decode_sequence_ext(GstVaapiDecoderMpeg2 *decoder, guchar *buf, guint buf_size)
GstVaapiProfile profile; GstVaapiProfile profile;
guint width, height; guint width, height;
if (!gst_mpeg_video_parse_sequence_extension(seq_ext, buf, buf_size, 0)) { if (!gst_mpeg_video_parse_sequence_extension(seq_ext, buf, buf_size, 4)) {
GST_ERROR("failed to parse sequence-extension"); GST_ERROR("failed to parse sequence-extension");
return GST_VAAPI_DECODER_STATUS_ERROR_BITSTREAM_PARSER; return GST_VAAPI_DECODER_STATUS_ERROR_BITSTREAM_PARSER;
} }
@ -600,7 +600,7 @@ decode_quant_matrix_ext(GstVaapiDecoderMpeg2 *decoder, guchar *buf, guint buf_si
GstVaapiDecoderMpeg2Private * const priv = decoder->priv; GstVaapiDecoderMpeg2Private * const priv = decoder->priv;
GstMpegVideoQuantMatrixExt * const quant_matrix_ext = &priv->quant_matrix_ext; GstMpegVideoQuantMatrixExt * const quant_matrix_ext = &priv->quant_matrix_ext;
if (!gst_mpeg_video_parse_quant_matrix_extension(quant_matrix_ext, buf, buf_size, 0)) { if (!gst_mpeg_video_parse_quant_matrix_extension(quant_matrix_ext, buf, buf_size, 4)) {
GST_ERROR("failed to parse quant-matrix-extension"); GST_ERROR("failed to parse quant-matrix-extension");
return GST_VAAPI_DECODER_STATUS_ERROR_BITSTREAM_PARSER; return GST_VAAPI_DECODER_STATUS_ERROR_BITSTREAM_PARSER;
} }
@ -616,7 +616,7 @@ decode_gop(GstVaapiDecoderMpeg2 *decoder, guchar *buf, guint buf_size)
GstMpegVideoGop gop; GstMpegVideoGop gop;
GstClockTime pts; GstClockTime pts;
if (!gst_mpeg_video_parse_gop(&gop, buf, buf_size, 0)) { if (!gst_mpeg_video_parse_gop(&gop, buf, buf_size, 4)) {
GST_ERROR("failed to parse GOP"); GST_ERROR("failed to parse GOP");
return GST_VAAPI_DECODER_STATUS_ERROR_BITSTREAM_PARSER; return GST_VAAPI_DECODER_STATUS_ERROR_BITSTREAM_PARSER;
} }
@ -676,7 +676,7 @@ decode_picture(GstVaapiDecoderMpeg2 *decoder, guchar *buf, guint buf_size)
return status; return status;
} }
if (!gst_mpeg_video_parse_picture_header(pic_hdr, buf, buf_size, 0)) { if (!gst_mpeg_video_parse_picture_header(pic_hdr, buf, buf_size, 4)) {
GST_ERROR("failed to parse picture header"); GST_ERROR("failed to parse picture header");
return GST_VAAPI_DECODER_STATUS_ERROR_BITSTREAM_PARSER; return GST_VAAPI_DECODER_STATUS_ERROR_BITSTREAM_PARSER;
} }
@ -713,7 +713,7 @@ decode_picture_ext(GstVaapiDecoderMpeg2 *decoder, guchar *buf, guint buf_size)
GstMpegVideoPictureExt * const pic_ext = &priv->pic_ext; GstMpegVideoPictureExt * const pic_ext = &priv->pic_ext;
GstVaapiPicture * const picture = priv->current_picture; GstVaapiPicture * const picture = priv->current_picture;
if (!gst_mpeg_video_parse_picture_extension(pic_ext, buf, buf_size, 0)) { if (!gst_mpeg_video_parse_picture_extension(pic_ext, buf, buf_size, 4)) {
GST_ERROR("failed to parse picture-extension"); GST_ERROR("failed to parse picture-extension");
return GST_VAAPI_DECODER_STATUS_ERROR_BITSTREAM_PARSER; return GST_VAAPI_DECODER_STATUS_ERROR_BITSTREAM_PARSER;
} }
@ -887,6 +887,7 @@ decode_slice(
/* Parse slice */ /* Parse slice */
gst_bit_reader_init(&br, buf, buf_size); gst_bit_reader_init(&br, buf, buf_size);
SKIP(&br, 32); /* slice_start_code */
if (priv->height > 2800) if (priv->height > 2800)
READ_UINT8(&br, slice_vertical_position_extension, 3); READ_UINT8(&br, slice_vertical_position_extension, 3);
if (priv->has_seq_scalable_ext) { if (priv->has_seq_scalable_ext) {
@ -977,7 +978,7 @@ decode_buffer(GstVaapiDecoderMpeg2 *decoder, GstBuffer *buffer)
ofs = scan_for_start_code(priv->adapter, 4, size - 4, NULL); ofs = scan_for_start_code(priv->adapter, 4, size - 4, NULL);
if (ofs < 0) if (ofs < 0)
break; break;
gst_adapter_flush(priv->adapter, 4); buffer = gst_adapter_take_buffer(priv->adapter, ofs);
size -= ofs; size -= ofs;
if (ofs == 4) { if (ofs == 4) {
@ -989,7 +990,6 @@ decode_buffer(GstVaapiDecoderMpeg2 *decoder, GstBuffer *buffer)
break; break;
} }
buffer = gst_adapter_take_buffer(priv->adapter, ofs - 4);
buf = GST_BUFFER_DATA(buffer); buf = GST_BUFFER_DATA(buffer);
buf_size = GST_BUFFER_SIZE(buffer); buf_size = GST_BUFFER_SIZE(buffer);
@ -1004,7 +1004,7 @@ decode_buffer(GstVaapiDecoderMpeg2 *decoder, GstBuffer *buffer)
status = decode_sequence(decoder, buf, buf_size); status = decode_sequence(decoder, buf, buf_size);
break; break;
case GST_MPEG_VIDEO_PACKET_EXTENSION: { case GST_MPEG_VIDEO_PACKET_EXTENSION: {
const guchar id = buf[0] >> 4; const guchar id = buf[4] >> 4;
switch (id) { switch (id) {
case GST_MPEG_VIDEO_PACKET_EXT_SEQUENCE: case GST_MPEG_VIDEO_PACKET_EXT_SEQUENCE:
status = decode_sequence_ext(decoder, buf, buf_size); status = decode_sequence_ext(decoder, buf, buf_size);