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https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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2c449e42ca
Allocate decoder unit earlier in the main parse() function and don't delegate this task to derived classes. The ultimate purpose is to get rid of dynamic allocation of decoder units.
175 lines
5.6 KiB
C
175 lines
5.6 KiB
C
/*
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* gstvaapidecoder_unit.h - VA decoder units
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*
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* Copyright (C) 2012 Intel Corporation
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public License
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* as published by the Free Software Foundation; either version 2.1
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* of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free
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* Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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* Boston, MA 02110-1301 USA
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*/
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#ifndef GST_VAAPI_DECODER_UNIT_H
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#define GST_VAAPI_DECODER_UNIT_H
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#include <gst/gstbuffer.h>
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#include <gst/vaapi/gstvaapiminiobject.h>
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G_BEGIN_DECLS
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typedef struct _GstVaapiDecoderUnit GstVaapiDecoderUnit;
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#define GST_VAAPI_DECODER_UNIT(unit) \
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((GstVaapiDecoderUnit *)(unit))
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#define GST_VAAPI_IS_DECODER_UNIT(unit) \
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(GST_VAAPI_DECODER_UNIT(unit) != NULL)
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/**
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* GstVaapiDecoderUnitFlags:
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* @GST_VAAPI_DECODER_UNIT_FLAG_FRAME_START: marks the start of a frame.
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* @GST_VAAPI_DECODER_UNIT_FLAG_FRAME_END: marks the end of a frame.
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* @GST_VAAPI_DECODER_UNIT_FLAG_STREAM_END: marks the end of a stream.
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* @GST_VAAPI_DECODER_UNIT_FLAG_SLICE: the unit contains slice data.
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* @GST_VAAPI_DECODER_UNIT_FLAG_SKIP: marks the unit as unused/skipped.
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*
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* Flags for #GstVaapiDecoderUnit.
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*/
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typedef enum {
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GST_VAAPI_DECODER_UNIT_FLAG_FRAME_START = (1 << 0),
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GST_VAAPI_DECODER_UNIT_FLAG_FRAME_END = (1 << 1),
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GST_VAAPI_DECODER_UNIT_FLAG_STREAM_END = (1 << 2),
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GST_VAAPI_DECODER_UNIT_FLAG_SLICE = (1 << 3),
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GST_VAAPI_DECODER_UNIT_FLAG_SKIP = (1 << 4),
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GST_VAAPI_DECODER_UNIT_FLAG_LAST = (1 << 5)
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} GstVaapiDecoderUnitFlags;
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#define GST_VAAPI_DECODER_UNIT_FLAGS GST_VAAPI_MINI_OBJECT_FLAGS
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#define GST_VAAPI_DECODER_UNIT_FLAG_IS_SET GST_VAAPI_MINI_OBJECT_FLAG_IS_SET
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#define GST_VAAPI_DECODER_UNIT_FLAG_SET GST_VAAPI_MINI_OBJECT_FLAG_SET
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#define GST_VAAPI_DECODER_UNIT_FLAG_UNSET GST_VAAPI_MINI_OBJECT_FLAG_UNSET
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/**
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* GST_VAAPI_DECODER_UNIT_IS_FRAME_START:
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* @unit: a #GstVaapiDecoderUnit
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*
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* Tests if the decoder unit marks the start of a frame.
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*
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* The start of a frame is codec dependent but it may include any new
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* sequence header.
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*/
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#define GST_VAAPI_DECODER_UNIT_IS_FRAME_START(unit) \
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(GST_VAAPI_DECODER_UNIT_FLAG_IS_SET(unit, \
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GST_VAAPI_DECODER_UNIT_FLAG_FRAME_START))
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/**
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* GST_VAAPI_DECODER_UNIT_IS_FRAME_END:
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* @unit: a #GstVaapiDecoderUnit
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*
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* Tests if the decoder unit marks the end of a frame.
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*
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* The end of a frame is codec dependent but it is usually represented
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* by the last bitstream chunk that holds valid slice data.
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*/
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#define GST_VAAPI_DECODER_UNIT_IS_FRAME_END(unit) \
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(GST_VAAPI_DECODER_UNIT_FLAG_IS_SET(unit, \
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GST_VAAPI_DECODER_UNIT_FLAG_FRAME_END))
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/**
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* GST_VAAPI_DECODER_UNIT_IS_STREAM_END:
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* @unit: a #GstVaapiDecoderUnit
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*
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* Tests if the decoder unit marks the end of the stream.
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*/
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#define GST_VAAPI_DECODER_UNIT_IS_STREAM_END(unit) \
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(GST_VAAPI_DECODER_UNIT_FLAG_IS_SET(unit, \
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GST_VAAPI_DECODER_UNIT_FLAG_STREAM_END))
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/**
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* GST_VAAPI_DECODER_UNIT_IS_SLICE:
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* @unit: a #GstVaapiDecoderUnit
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*
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* Tests if the decoder unit contains slice data.
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*/
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#define GST_VAAPI_DECODER_UNIT_IS_SLICE(unit) \
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(GST_VAAPI_DECODER_UNIT_FLAG_IS_SET(unit, \
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GST_VAAPI_DECODER_UNIT_FLAG_SLICE))
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/**
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* GST_VAAPI_DECODER_UNIT_IS_SKIPPED:
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* @unit: a #GstVaapiDecoderUnit
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*
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* Tests if the decoder unit is not needed for decoding an can be skipped.
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* i.e. #GstVaapiDecoder sub-classes won't see this chunk of bitstream
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* data.
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*/
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#define GST_VAAPI_DECODER_UNIT_IS_SKIPPED(unit) \
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(GST_VAAPI_DECODER_UNIT_FLAG_IS_SET(unit, \
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GST_VAAPI_DECODER_UNIT_FLAG_SKIP))
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/**
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* GstVaapiDecoderUnit:
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* @size: size in bytes of this bitstream unit
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* @offset: relative offset in bytes to bitstream unit within the
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* associated #GstVideoCodecFrame input_buffer
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* @buffer: (optional) associated buffer or sub-buffer
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* @parsed_info: parser-specific data (this is codec specific)
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* @parsed_info_destroy_notify: function used to release @parsed_info data
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*
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* A chunk of bitstream data that was parsed.
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*/
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struct _GstVaapiDecoderUnit {
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/*< private >*/
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GstVaapiMiniObject parent_instance;
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guint size;
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guint offset;
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GstBuffer *buffer;
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gpointer parsed_info;
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GDestroyNotify parsed_info_destroy_notify;
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};
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G_GNUC_INTERNAL
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void
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gst_vaapi_decoder_unit_init(GstVaapiDecoderUnit *unit);
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G_GNUC_INTERNAL
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void
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gst_vaapi_decoder_unit_clear(GstVaapiDecoderUnit *unit);
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G_GNUC_INTERNAL
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GstVaapiDecoderUnit *
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gst_vaapi_decoder_unit_new(void);
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G_GNUC_INTERNAL
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void
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gst_vaapi_decoder_unit_set_buffer(GstVaapiDecoderUnit *unit, GstBuffer *buffer);
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G_GNUC_INTERNAL
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void
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gst_vaapi_decoder_unit_set_parsed_info(GstVaapiDecoderUnit *unit,
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gpointer parsed_info, GDestroyNotify destroy_notify);
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#define gst_vaapi_decoder_unit_ref(unit) \
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gst_vaapi_mini_object_ref(GST_VAAPI_MINI_OBJECT(unit))
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#define gst_vaapi_decoder_unit_unref(unit) \
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gst_vaapi_mini_object_unref(GST_VAAPI_MINI_OBJECT(unit))
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#define gst_vaapi_decoder_unit_replace(old_unit_p, new_unit) \
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gst_vaapi_mini_object_replace((GstVaapiMiniObject **)(old_unit_p), \
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(GstVaapiMiniObject *)(new_unit))
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G_END_DECLS
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#endif /* GST_VAAPI_DECODER_UNIT_H */
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