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https://gitee.com/openharmony/third_party_ffmpeg
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63d875772d
AVHWAccel.end_frame can run on a worker thread. The assumption of the frame threading code is that the worker thread will change the AVFrame image data, not the AVFrame fields. So the AVFrame fields are not synced back to the main thread. But this breaks videotoolbox due to its special requirements (everything else is fine). It actually wants to update AVFrame fields. The actual videotoolbox frame is now stored in the dummy AVBufferRef, so it mimics what happens in non-videotoolbox cases. (Changing the AVBufferRef contents is a bit like changing the image data.) The post_process callback copies that reference to the proper AVFrame field. Based on a patch by wm4. Signed-off-by: Aman Gupta <aman@tmm1.net>
59 lines
2.3 KiB
C
59 lines
2.3 KiB
C
/*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg 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 FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef AVCODEC_VT_INTERNAL_H
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#define AVCODEC_VT_INTERNAL_H
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typedef struct VTContext {
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// The current bitstream buffer.
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uint8_t *bitstream;
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// The current size of the bitstream.
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int bitstream_size;
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// The reference size used for fast reallocation.
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int allocated_size;
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// The core video buffer
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CVImageBufferRef frame;
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// Current dummy frames context (depends on exact CVImageBufferRef params).
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struct AVBufferRef *cached_hw_frames_ctx;
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// Non-NULL if the new hwaccel API is used. This is only a separate struct
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// to ease compatibility with the old API.
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struct AVVideotoolboxContext *vt_ctx;
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// Current H264 parameters (used to trigger decoder restart on SPS changes).
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uint8_t sps[3];
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bool reconfig_needed;
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} VTContext;
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int ff_videotoolbox_alloc_frame(AVCodecContext *avctx, AVFrame *frame);
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int ff_videotoolbox_uninit(AVCodecContext *avctx);
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int ff_videotoolbox_h264_start_frame(AVCodecContext *avctx,
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const uint8_t *buffer,
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uint32_t size);
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int ff_videotoolbox_h264_decode_slice(AVCodecContext *avctx,
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const uint8_t *buffer,
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uint32_t size);
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CFDataRef ff_videotoolbox_avcc_extradata_create(AVCodecContext *avctx);
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CFDataRef ff_videotoolbox_hvcc_extradata_create(AVCodecContext *avctx);
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#endif /* AVCODEC_VT_INTERNAL_H */
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