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/*
* gstvaapidecoder_unit.h - VA decoder units
*
* Copyright (C) 2012-2013 Intel Corporation
* Author: Gwenole Beauchesne <gwenole.beauchesne@intel.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public License
* as published by the Free Software Foundation; either version 2.1
* of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free
* Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301 USA
*/
#ifndef GST_VAAPI_DECODER_UNIT_H
#define GST_VAAPI_DECODER_UNIT_H
G_BEGIN_DECLS
typedef struct _GstVaapiDecoderUnit GstVaapiDecoderUnit;
#define GST_VAAPI_DECODER_UNIT(unit) \
((GstVaapiDecoderUnit *)(unit))
#define GST_VAAPI_IS_DECODER_UNIT(unit) \
(GST_VAAPI_DECODER_UNIT(unit) != NULL)
/**
* GstVaapiDecoderUnitFlags:
* @GST_VAAPI_DECODER_UNIT_FLAG_FRAME_START: marks the start of a frame.
* @GST_VAAPI_DECODER_UNIT_FLAG_FRAME_END: marks the end of a frame.
* @GST_VAAPI_DECODER_UNIT_FLAG_STREAM_END: marks the end of a stream.
* @GST_VAAPI_DECODER_UNIT_FLAG_SLICE: the unit contains slice data.
* @GST_VAAPI_DECODER_UNIT_FLAG_SKIP: marks the unit as unused/skipped.
*
* Flags for #GstVaapiDecoderUnit.
*/
typedef enum {
GST_VAAPI_DECODER_UNIT_FLAG_FRAME_START = (1 << 0),
GST_VAAPI_DECODER_UNIT_FLAG_FRAME_END = (1 << 1),
GST_VAAPI_DECODER_UNIT_FLAG_STREAM_END = (1 << 2),
GST_VAAPI_DECODER_UNIT_FLAG_SLICE = (1 << 3),
GST_VAAPI_DECODER_UNIT_FLAG_SKIP = (1 << 4),
GST_VAAPI_DECODER_UNIT_FLAG_LAST = (1 << 5)
} GstVaapiDecoderUnitFlags;
/**
* GST_VAAPI_DECODER_UNIT_FLAGS:
* @unit: a #GstVaapiDecoderUnit
*
* The entire set of flags for the @unit
*/
#define GST_VAAPI_DECODER_UNIT_FLAGS(unit) \
((unit)->flags)
/**
* GST_VAAPI_DECODER_UNIT_FLAG_IS_SET:
* @unit: a #GstVaapiDecoderUnit
* @flag: a flag to check for
*
* Checks whether the given @flag is set
*/
#define GST_VAAPI_DECODER_UNIT_FLAG_IS_SET(unit, flag) \
((GST_VAAPI_DECODER_UNIT_FLAGS(unit) & (flag)) != 0)
/**
* GST_VAAPI_DECODER_UNIT_FLAG_SET:
* @unit: a #GstVaapiDecoderUnit
* @flags: flags to set
*
* This macro sets the given bits
*/
#define GST_VAAPI_DECODER_UNIT_FLAG_SET(unit, flags) \
(GST_VAAPI_DECODER_UNIT_FLAGS(unit) |= (flags))
/**
* GST_VAAPI_DECODER_UNIT_FLAG_UNSET:
* @unit: a #GstVaapiDecoderUnit
* @flags: flags to unset
*
* This macro unsets the given bits.
*/
#define GST_VAAPI_DECODER_UNIT_FLAG_UNSET(unit, flags) \
(GST_VAAPI_DECODER_UNIT_FLAGS(unit) &= ~(flags))
/**
* GST_VAAPI_DECODER_UNIT_IS_FRAME_START:
* @unit: a #GstVaapiDecoderUnit
*
* Tests if the decoder unit marks the start of a frame.
*
* The start of a frame is codec dependent but it may include any new
* sequence header.
*/
#define GST_VAAPI_DECODER_UNIT_IS_FRAME_START(unit) \
(GST_VAAPI_DECODER_UNIT_FLAG_IS_SET(unit, \
GST_VAAPI_DECODER_UNIT_FLAG_FRAME_START))
/**
* GST_VAAPI_DECODER_UNIT_IS_FRAME_END:
* @unit: a #GstVaapiDecoderUnit
*
* Tests if the decoder unit marks the end of a frame.
*
* The end of a frame is codec dependent but it is usually represented
* by the last bitstream chunk that holds valid slice data.
*/
#define GST_VAAPI_DECODER_UNIT_IS_FRAME_END(unit) \
(GST_VAAPI_DECODER_UNIT_FLAG_IS_SET(unit, \
GST_VAAPI_DECODER_UNIT_FLAG_FRAME_END))
/**
* GST_VAAPI_DECODER_UNIT_IS_STREAM_END:
* @unit: a #GstVaapiDecoderUnit
*
* Tests if the decoder unit marks the end of the stream.
*/
#define GST_VAAPI_DECODER_UNIT_IS_STREAM_END(unit) \
(GST_VAAPI_DECODER_UNIT_FLAG_IS_SET(unit, \
GST_VAAPI_DECODER_UNIT_FLAG_STREAM_END))
/**
* GST_VAAPI_DECODER_UNIT_IS_SLICE:
* @unit: a #GstVaapiDecoderUnit
*
* Tests if the decoder unit contains slice data.
*/
#define GST_VAAPI_DECODER_UNIT_IS_SLICE(unit) \
(GST_VAAPI_DECODER_UNIT_FLAG_IS_SET(unit, \
GST_VAAPI_DECODER_UNIT_FLAG_SLICE))
/**
* GST_VAAPI_DECODER_UNIT_IS_SKIPPED:
* @unit: a #GstVaapiDecoderUnit
*
* Tests if the decoder unit is not needed for decoding an can be skipped.
* i.e. #GstVaapiDecoder sub-classes won't see this chunk of bitstream
* data.
*/
#define GST_VAAPI_DECODER_UNIT_IS_SKIPPED(unit) \
(GST_VAAPI_DECODER_UNIT_FLAG_IS_SET(unit, \
GST_VAAPI_DECODER_UNIT_FLAG_SKIP))
/**
* GstVaapiDecoderUnit:
* @size: size in bytes of this bitstream unit
* @offset: relative offset in bytes to bitstream unit within the
* associated #GstVideoCodecFrame input_buffer
* @parsed_info: parser-specific data (this is codec specific)
* @parsed_info_destroy_notify: function used to release @parsed_info data
*
* A chunk of bitstream data that was parsed.
*/
struct _GstVaapiDecoderUnit {
guint flags;
guint size;
guint offset;
gpointer parsed_info;
GDestroyNotify parsed_info_destroy_notify;
};
G_GNUC_INTERNAL
void
gst_vaapi_decoder_unit_init(GstVaapiDecoderUnit *unit);
G_GNUC_INTERNAL
void
gst_vaapi_decoder_unit_clear(GstVaapiDecoderUnit *unit);
G_GNUC_INTERNAL
GstVaapiDecoderUnit *
gst_vaapi_decoder_unit_new(void);
G_GNUC_INTERNAL
void
gst_vaapi_decoder_unit_set_parsed_info(GstVaapiDecoderUnit *unit,
gpointer parsed_info, GDestroyNotify destroy_notify);
G_END_DECLS
#endif /* GST_VAAPI_DECODER_UNIT_H */
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