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vc1: handle codec-data.

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This commit is contained in:
Gwenole Beauchesne 2011-10-05 16:41:57 +02:00
parent 032486912f
commit a7ccbde2af
1 changed files with 60 additions and 0 deletions
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60
gst-libs/gst/vaapi/gstvaapidecoder_vc1.c
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@ -1047,6 +1047,7 @@ decode_buffer(GstVaapiDecoderVC1 *decoder, GstBuffer *buffer)
GstVaapiDecoderStatus status;
GstVC1ParserResult result;
GstVC1BDU ebdu;
GstBuffer *codec_data;
guchar *buf;
guint buf_size, ofs;
@ -1055,6 +1056,17 @@ decode_buffer(GstVaapiDecoderVC1 *decoder, GstBuffer *buffer)
if (!buf && buf_size == 0)
return decode_sequence_end(decoder);
/* Assume demuxer sends out plain frames if codec-data */
codec_data = GST_VAAPI_DECODER_CODEC_DATA(decoder);
if (codec_data && codec_data != buffer) {
ebdu.type = GST_VC1_FRAME;
ebdu.size = buf_size;
ebdu.sc_offset = 0;
ebdu.offset = 0;
ebdu.data = buf;
return decode_ebdu(decoder, &ebdu);
}
gst_vaapi_tsb_push(priv->tsb, buffer);
if (priv->sub_buffer) {
@ -1089,11 +1101,52 @@ decode_buffer(GstVaapiDecoderVC1 *decoder, GstBuffer *buffer)
return status;
}
static GstVaapiDecoderStatus
decode_codec_data(GstVaapiDecoderVC1 *decoder, GstBuffer *buffer)
{
GstVaapiDecoderStatus status;
GstVC1ParserResult result;
GstVC1BDU ebdu;
guchar *buf;
guint buf_size, ofs;
buf = GST_BUFFER_DATA(buffer);
buf_size = GST_BUFFER_SIZE(buffer);
if (!buf || buf_size == 0)
return GST_VAAPI_DECODER_STATUS_SUCCESS;
ofs = 0;
do {
result = gst_vc1_identify_next_bdu(
buf + ofs,
buf_size - ofs,
&ebdu
);
switch (result) {
case GST_VC1_PARSER_NO_BDU_END:
/* Assume the EBDU is complete within codec-data bounds */
ebdu.size = buf_size - ofs - (ebdu.offset - ebdu.sc_offset);
// fall-through
case GST_VC1_PARSER_OK:
status = decode_ebdu(decoder, &ebdu);
ofs += ebdu.offset + ebdu.size;
break;
default:
status = get_status(result);
break;
}
} while (status == GST_VAAPI_DECODER_STATUS_SUCCESS && ofs < buf_size);
return status;
}
GstVaapiDecoderStatus
gst_vaapi_decoder_vc1_decode(GstVaapiDecoder *base, GstBuffer *buffer)
{
GstVaapiDecoderVC1 * const decoder = GST_VAAPI_DECODER_VC1(base);
GstVaapiDecoderVC1Private * const priv = decoder->priv;
GstVaapiDecoderStatus status;
GstBuffer *codec_data;
g_return_val_if_fail(priv->is_constructed,
GST_VAAPI_DECODER_STATUS_ERROR_INIT_FAILED);
@ -1102,6 +1155,13 @@ gst_vaapi_decoder_vc1_decode(GstVaapiDecoder *base, GstBuffer *buffer)
priv->is_opened = gst_vaapi_decoder_vc1_open(decoder, buffer);
if (!priv->is_opened)
return GST_VAAPI_DECODER_STATUS_ERROR_UNSUPPORTED_CODEC;
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);
}