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mpeg2: fix crash when there is no free surface to decode into.

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This commit is contained in:
Gwenole Beauchesne 2012-02-06 15:54:09 +01:00
parent d46e8d9961
commit d75d70d395
3 changed files with 21 additions and 4 deletions
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17
gst-libs/gst/vaapi/gstvaapidecoder.c
View file

@ -99,14 +99,13 @@ pop_buffer(GstVaapiDecoder *decoder)
static GstVaapiDecoderStatus
decode_step(GstVaapiDecoder *decoder)
{
GstVaapiDecoderPrivate * const priv = decoder->priv;
GstVaapiDecoderStatus status;
GstBuffer *buffer;
/* Decoding will fail if there is no surface left */
if (priv->context &&
gst_vaapi_context_get_surface_count(priv->context) == 0)
return GST_VAAPI_DECODER_STATUS_ERROR_NO_SURFACE;
status = gst_vaapi_decoder_check_status(decoder);
if (status != GST_VAAPI_DECODER_STATUS_SUCCESS)
return status;
do {
buffer = pop_buffer(decoder);
@ -561,3 +560,13 @@ gst_vaapi_decoder_push_surface_proxy(
{
return push_surface(decoder, proxy);
}
GstVaapiDecoderStatus
gst_vaapi_decoder_check_status(GstVaapiDecoder *decoder)
{
GstVaapiDecoderPrivate * const priv = decoder->priv;
if (priv->context && gst_vaapi_context_get_surface_count(priv->context) < 1)
return GST_VAAPI_DECODER_STATUS_ERROR_NO_SURFACE;
return GST_VAAPI_DECODER_STATUS_SUCCESS;
}

4
gst-libs/gst/vaapi/gstvaapidecoder_mpeg2.c
View file

@ -685,6 +685,10 @@ decode_buffer(GstVaapiDecoderMpeg2 *decoder, GstBuffer *buffer)
gst_adapter_flush(priv->adapter, ofs);
size -= ofs;
status = gst_vaapi_decoder_check_status(decoder);
if (status != GST_VAAPI_DECODER_STATUS_SUCCESS)
break;
if (size < 8)
break;
ofs = scan_for_start_code(priv->adapter, 4, size - 4, NULL);

4
gst-libs/gst/vaapi/gstvaapidecoder_priv.h
View file

@ -171,6 +171,10 @@ gst_vaapi_decoder_push_surface_proxy(
GstVaapiSurfaceProxy *proxy
) attribute_hidden;
GstVaapiDecoderStatus
gst_vaapi_decoder_check_status(GstVaapiDecoder *decoder)
attribute_hidden;
G_END_DECLS
#endif /* GST_VAAPI_DECODER_PRIV_H */