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decoder: expose new parse/decode API.

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Introduce new decoding process whereby a GstVideoCodecFrame is created
first. Next, input stream buffers are accumulated into a GstAdapter,
that is then passed to the _parse() function. The GstVaapiDecoder object
accumulates all parsed units and when a complete frame or field is
detected, that GstVideoCodecFrame is passed to the _decode() function.

Ultimately, the caller receives a GstVaapiSurfaceProxy if decoding
process was successful.
This commit is contained in:
Gwenole Beauchesne 2012-11-29 15:06:00 +01:00
parent ea9703362c
commit 6bed9ebe0f
3 changed files with 62 additions and 0 deletions
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47
gst-libs/gst/vaapi/gstvaapidecoder.c
View file

@ -787,3 +787,50 @@ gst_vaapi_decoder_check_status(GstVaapiDecoder *decoder)
return GST_VAAPI_DECODER_STATUS_ERROR_NO_SURFACE;
return GST_VAAPI_DECODER_STATUS_SUCCESS;
}
GstVaapiDecoderStatus
gst_vaapi_decoder_parse(GstVaapiDecoder *decoder,
GstVideoCodecFrame *base_frame, GstAdapter *adapter, gboolean at_eos,
guint *got_unit_size_ptr, gboolean *got_frame_ptr)
{
g_return_val_if_fail(GST_VAAPI_IS_DECODER(decoder),
GST_VAAPI_DECODER_STATUS_ERROR_INVALID_PARAMETER);
g_return_val_if_fail(base_frame != NULL,
GST_VAAPI_DECODER_STATUS_ERROR_INVALID_PARAMETER);
g_return_val_if_fail(adapter != NULL,
GST_VAAPI_DECODER_STATUS_ERROR_INVALID_PARAMETER);
g_return_val_if_fail(got_unit_size_ptr != NULL,
GST_VAAPI_DECODER_STATUS_ERROR_INVALID_PARAMETER);
g_return_val_if_fail(got_frame_ptr != NULL,
GST_VAAPI_DECODER_STATUS_ERROR_INVALID_PARAMETER);
return do_parse(decoder, base_frame, adapter, at_eos,
got_unit_size_ptr, got_frame_ptr);
}
GstVaapiDecoderStatus
gst_vaapi_decoder_decode(GstVaapiDecoder *decoder,
GstVideoCodecFrame *base_frame, GstVaapiSurfaceProxy **out_proxy_ptr)
{
GstVaapiDecoderStatus status;
g_return_val_if_fail(GST_VAAPI_IS_DECODER(decoder),
GST_VAAPI_DECODER_STATUS_ERROR_INVALID_PARAMETER);
g_return_val_if_fail(base_frame != NULL,
GST_VAAPI_DECODER_STATUS_ERROR_INVALID_PARAMETER);
g_return_val_if_fail(base_frame->user_data != NULL,
GST_VAAPI_DECODER_STATUS_ERROR_INVALID_PARAMETER);
g_return_val_if_fail(out_proxy_ptr != NULL,
GST_VAAPI_DECODER_STATUS_ERROR_INVALID_PARAMETER);
status = gst_vaapi_decoder_check_status(decoder);
if (status != GST_VAAPI_DECODER_STATUS_SUCCESS)
return status;
status = do_decode(decoder, base_frame);
if (status != GST_VAAPI_DECODER_STATUS_SUCCESS)
return status;
*out_proxy_ptr = pop_surface(decoder);
return GST_VAAPI_DECODER_STATUS_SUCCESS;
}

11
gst-libs/gst/vaapi/gstvaapidecoder.h
View file

@ -73,6 +73,7 @@ typedef struct _GstVaapiDecoderClass GstVaapiDecoderClass;
* @GST_VAAPI_DECODER_STATUS_ERROR_BITSTREAM_PARSER: Invalid or unsupported bitstream data.
* @GST_VAAPI_DECODER_STATUS_ERROR_UNSUPPORTED_PROFILE: Unsupported codec profile.
* @GST_VAAPI_DECODER_STATUS_ERROR_UNSUPPORTED_CHROMA_FORMAT: Unsupported chroma format.
* @GST_VAAPI_DECODER_STATUS_ERROR_INVALID_PARAMETER: Unsupported parameter.
* @GST_VAAPI_DECODER_STATUS_ERROR_UNKNOWN: Unknown error.
*
* Decoder status for gst_vaapi_decoder_get_surface().
@ -89,6 +90,7 @@ typedef enum {
GST_VAAPI_DECODER_STATUS_ERROR_BITSTREAM_PARSER,
GST_VAAPI_DECODER_STATUS_ERROR_UNSUPPORTED_PROFILE,
GST_VAAPI_DECODER_STATUS_ERROR_UNSUPPORTED_CHROMA_FORMAT,
GST_VAAPI_DECODER_STATUS_ERROR_INVALID_PARAMETER,
GST_VAAPI_DECODER_STATUS_ERROR_UNKNOWN = -1
} GstVaapiDecoderStatus;
@ -141,6 +143,15 @@ gst_vaapi_decoder_get_surface(
GstVaapiDecoderStatus *pstatus
);
GstVaapiDecoderStatus
gst_vaapi_decoder_parse(GstVaapiDecoder *decoder,
GstVideoCodecFrame *frame, GstAdapter *adapter, gboolean at_eos,
guint *got_unit_size_ptr, gboolean *got_frame_ptr);
GstVaapiDecoderStatus
gst_vaapi_decoder_decode(GstVaapiDecoder *decoder,
GstVideoCodecFrame *frame, GstVaapiSurfaceProxy **out_proxy_ptr);
G_END_DECLS
#endif /* GST_VAAPI_DECODER_H */

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

@ -163,6 +163,10 @@ gst_vaapi_picture_create(
picture->slices = g_ptr_array_new();
if (!picture->slices)
return FALSE;
gst_vaapi_mini_object_set_user_data(
GST_VAAPI_MINI_OBJECT(picture->proxy),
GST_VAAPI_DECODER_CODEC_FRAME(GET_DECODER(picture)), NULL);
return TRUE;
}