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FFmpeg/libavcodec/vda_vt_internal.h
wm4 532b23f079 videotoolbox: add hwcontext support
This adds tons of code for no other benefit than making VideoToolbox
support conform with the new hwaccel API (using hw_device_ctx and
hw_frames_ctx).

Since VideoToolbox decoding does not actually require the user to
allocate frames, the new code does mostly nothing.

One benefit is that ffmpeg_videotoolbox.c can be dropped once generic
hwaccel support for ffmpeg.c is merged from Libav.

Does not consider VDA or VideoToolbox encoding.

Fun fact: the frame transfer functions are copied from vaapi, as the
mapping makes copying generic boilerplate. Mapping itself is not
exported by the VT code, because I don't know how to test.
2017-05-15 11:30:36 +02:00

63 lines
2.5 KiB
C

/*
* This file is part of FFmpeg.
*
* FFmpeg 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.
*
* FFmpeg 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 FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef AVCODEC_VDA_VT_INTERNAL_H
#define AVCODEC_VDA_VT_INTERNAL_H
void ff_vda_output_callback(void *vda_hw_ctx,
CFDictionaryRef user_info,
OSStatus status,
uint32_t infoFlags,
CVImageBufferRef image_buffer);
int ff_vda_default_init(AVCodecContext *avctx);
void ff_vda_default_free(AVCodecContext *avctx);
typedef struct VTContext {
// The current bitstream buffer.
uint8_t *bitstream;
// The current size of the bitstream.
int bitstream_size;
// The reference size used for fast reallocation.
int allocated_size;
// The core video buffer
CVImageBufferRef frame;
// Current dummy frames context (depends on exact CVImageBufferRef params).
struct AVBufferRef *cached_hw_frames_ctx;
// Non-NULL if the new hwaccel API is used. This is only a separate struct
// to ease compatibility with the old API.
struct AVVideotoolboxContext *vt_ctx;
} VTContext;
int ff_videotoolbox_alloc_frame(AVCodecContext *avctx, AVFrame *frame);
int ff_videotoolbox_uninit(AVCodecContext *avctx);
int ff_videotoolbox_buffer_create(VTContext *vtctx, AVFrame *frame);
int ff_videotoolbox_h264_start_frame(AVCodecContext *avctx,
const uint8_t *buffer,
uint32_t size);
int ff_videotoolbox_h264_decode_slice(AVCodecContext *avctx,
const uint8_t *buffer,
uint32_t size);
CFDataRef ff_videotoolbox_avcc_extradata_create(AVCodecContext *avctx);
#endif /* AVCODEC_VDA_VT_INTERNAL_H */