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h264: fix end-of-stream conditions (flush).

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Decode pending data in the adapter prior to processing the actual
code for end-of-stream.
This commit is contained in:
Gwenole Beauchesne 2012-10-10 10:31:39 +02:00
parent 388e881ba9
commit 6f2e885f11
1 changed files with 22 additions and 10 deletions
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28
gst-libs/gst/vaapi/gstvaapidecoder_h264.c
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@ -2220,6 +2220,7 @@ decode_buffer(GstVaapiDecoderH264 *decoder, GstBuffer *buffer)
GstVaapiDecoderStatus status;
GstH264ParserResult result;
GstH264NalUnit nalu;
gboolean is_eos;
const guchar *buf;
guint i, buf_size, nalu_size, size;
guint32 start_code;
@ -2227,13 +2228,17 @@ decode_buffer(GstVaapiDecoderH264 *decoder, GstBuffer *buffer)
buf = GST_BUFFER_DATA(buffer);
buf_size = GST_BUFFER_SIZE(buffer);
if (!buf && buf_size == 0)
return decode_sequence_end(decoder);
is_eos = GST_BUFFER_IS_EOS(buffer);
if (buf && buf_size > 0)
gst_adapter_push(priv->adapter, gst_buffer_ref(buffer));
size = gst_adapter_available(priv->adapter);
do {
if (size == 0) {
status = GST_VAAPI_DECODER_STATUS_SUCCESS;
break;
}
status = gst_vaapi_decoder_check_status(GST_VAAPI_DECODER(decoder));
if (status != GST_VAAPI_DECODER_STATUS_SUCCESS)
break;
@ -2264,7 +2269,7 @@ decode_buffer(GstVaapiDecoderH264 *decoder, GstBuffer *buffer)
);
}
else {
if (size < 8)
if (size < 4)
break;
ofs = scan_for_start_code(priv->adapter, 0, size, &start_code);
if (ofs < 0)
@ -2272,11 +2277,14 @@ decode_buffer(GstVaapiDecoderH264 *decoder, GstBuffer *buffer)
gst_adapter_flush(priv->adapter, ofs);
size -= ofs;
if (size < 8)
break;
ofs = scan_for_start_code(priv->adapter, 4, size - 4, NULL);
if (ofs < 0)
ofs = G_UNLIKELY(size < 8) ? -1 :
scan_for_start_code(priv->adapter, 4, size - 4, NULL);
if (ofs < 0) {
// Assume the whole NAL unit is present if end-of-stream
if (!is_eos)
break;
ofs = size;
}
buffer = gst_adapter_take_buffer(priv->adapter, ofs);
size -= ofs;
@ -2328,6 +2336,10 @@ decode_buffer(GstVaapiDecoderH264 *decoder, GstBuffer *buffer)
}
gst_buffer_unref(buffer);
} while (status == GST_VAAPI_DECODER_STATUS_SUCCESS);
if (is_eos && (status == GST_VAAPI_DECODER_STATUS_SUCCESS ||
status == GST_VAAPI_DECODER_STATUS_ERROR_NO_DATA))
status = decode_sequence_end(decoder);
return status;
}