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mpeg2: fix crash when there is no free surface to decode into.
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parent
d46e8d9961
commit
d75d70d395
3 changed files with 21 additions and 4 deletions
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@ -99,14 +99,13 @@ pop_buffer(GstVaapiDecoder *decoder)
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static GstVaapiDecoderStatus
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decode_step(GstVaapiDecoder *decoder)
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{
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GstVaapiDecoderPrivate * const priv = decoder->priv;
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GstVaapiDecoderStatus status;
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GstBuffer *buffer;
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/* Decoding will fail if there is no surface left */
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if (priv->context &&
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gst_vaapi_context_get_surface_count(priv->context) == 0)
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return GST_VAAPI_DECODER_STATUS_ERROR_NO_SURFACE;
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status = gst_vaapi_decoder_check_status(decoder);
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if (status != GST_VAAPI_DECODER_STATUS_SUCCESS)
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return status;
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do {
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buffer = pop_buffer(decoder);
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@ -561,3 +560,13 @@ gst_vaapi_decoder_push_surface_proxy(
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{
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return push_surface(decoder, proxy);
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}
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GstVaapiDecoderStatus
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gst_vaapi_decoder_check_status(GstVaapiDecoder *decoder)
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{
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GstVaapiDecoderPrivate * const priv = decoder->priv;
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if (priv->context && gst_vaapi_context_get_surface_count(priv->context) < 1)
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return GST_VAAPI_DECODER_STATUS_ERROR_NO_SURFACE;
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return GST_VAAPI_DECODER_STATUS_SUCCESS;
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}
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@ -685,6 +685,10 @@ decode_buffer(GstVaapiDecoderMpeg2 *decoder, GstBuffer *buffer)
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gst_adapter_flush(priv->adapter, ofs);
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size -= ofs;
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status = gst_vaapi_decoder_check_status(decoder);
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if (status != GST_VAAPI_DECODER_STATUS_SUCCESS)
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break;
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if (size < 8)
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break;
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ofs = scan_for_start_code(priv->adapter, 4, size - 4, NULL);
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@ -171,6 +171,10 @@ gst_vaapi_decoder_push_surface_proxy(
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GstVaapiSurfaceProxy *proxy
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) attribute_hidden;
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GstVaapiDecoderStatus
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gst_vaapi_decoder_check_status(GstVaapiDecoder *decoder)
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attribute_hidden;
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G_END_DECLS
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#endif /* GST_VAAPI_DECODER_PRIV_H */
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