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h264: handle codec-data.

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Signed-off-by: Gwenole Beauchesne <gwenole.beauchesne@intel.com>
This commit is contained in:
Sreerenj Balachandran 2011-11-25 14:37:00 +02:00 committed by Gwenole Beauchesne
parent c071f80f40
commit 6d61965531
1 changed files with 77 additions and 2 deletions
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79
gst-libs/gst/vaapi/gstvaapidecoder_h264.c
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@ -265,6 +265,7 @@ struct _GstVaapiDecoderH264Private {
guint RefPicList0_count;
GstVaapiPictureH264 *RefPicList1[32];
guint RefPicList1_count;
guint nal_length_size;
guint width;
guint height;
guint mb_x;
@ -1810,11 +1811,77 @@ decode_buffer(GstVaapiDecoderH264 *decoder, GstBuffer *buffer)
return status;
}
static GstVaapiDecoderStatus
decode_codec_data(GstVaapiDecoderH264 *decoder, GstBuffer *buffer)
{
GstVaapiDecoderH264Private * const priv = decoder->priv;
GstVaapiDecoderStatus status;
GstH264NalUnit nalu;
GstH264ParserResult result;
guchar *buf;
guint buf_size;
guint i, ofs, num_sps, num_pps;
buf = GST_BUFFER_DATA(buffer);
buf_size = GST_BUFFER_SIZE(buffer);
if (!buf || buf_size == 0)
return GST_VAAPI_DECODER_STATUS_SUCCESS;
if (buf_size < 8)
return GST_VAAPI_DECODER_STATUS_ERROR_NO_DATA;
if (buf[0] != 1) {
GST_DEBUG("failed to decode codec-data, not in avcC format");
return GST_VAAPI_DECODER_STATUS_ERROR_BITSTREAM_PARSER;
}
priv->nal_length_size = (buf[4] & 0x03) + 1;
num_sps = buf[5] & 0x1f;
ofs = 6;
for (i = 0; i < num_sps; i++) {
result = gst_h264_parser_identify_nalu_avc(
priv->parser,
buf, ofs, buf_size, 2,
&nalu
);
if (result != GST_H264_PARSER_OK)
return get_status(result);
status = decode_sps(decoder, &nalu);
if (status != GST_VAAPI_DECODER_STATUS_SUCCESS)
return status;
ofs = nalu.offset + nalu.size;
}
num_pps = buf[ofs];
ofs++;
for (i = 0; i < num_pps; i++) {
result = gst_h264_parser_identify_nalu_avc(
priv->parser,
buf, ofs, buf_size, 2,
&nalu
);
if (result != GST_H264_PARSER_OK)
return get_status(result);
status = decode_pps(decoder, &nalu);
if (status != GST_VAAPI_DECODER_STATUS_SUCCESS)
return status;
ofs = nalu.offset + nalu.size;
}
return status;
}
GstVaapiDecoderStatus
gst_vaapi_decoder_h264_decode(GstVaapiDecoder *base, GstBuffer *buffer)
{
GstVaapiDecoderH264 * const decoder = GST_VAAPI_DECODER_H264(base);
GstVaapiDecoderH264Private * const priv = decoder->priv;
GstVaapiDecoderStatus status;
GstBuffer *codec_data;
g_return_val_if_fail(priv->is_constructed,
GST_VAAPI_DECODER_STATUS_ERROR_INIT_FAILED);
@ -1823,8 +1890,15 @@ gst_vaapi_decoder_h264_decode(GstVaapiDecoder *base, GstBuffer *buffer)
priv->is_opened = gst_vaapi_decoder_h264_open(decoder, buffer);
if (!priv->is_opened)
return GST_VAAPI_DECODER_STATUS_ERROR_UNSUPPORTED_CODEC;
}
return decode_buffer(decoder, buffer);
codec_data = GST_VAAPI_DECODER_CODEC_DATA(decoder);
if (codec_data) {
status = decode_codec_data(decoder, codec_data);
if (status != GST_VAAPI_DECODER_STATUS_SUCCESS)
return status;
}
}
return decode_buffer(decoder, buffer);
}
static void
@ -1883,6 +1957,7 @@ gst_vaapi_decoder_h264_init(GstVaapiDecoderH264 *decoder)
priv->list_count = 0;
priv->RefPicList0_count = 0;
priv->RefPicList1_count = 0;
priv->nal_length_size = 0;
priv->width = 0;
priv->height = 0;
priv->mb_x = 0;