mirror of https://git.ffmpeg.org/ffmpeg.git
1235 lines
41 KiB
C
1235 lines
41 KiB
C
/*
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* Videotoolbox hardware acceleration
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*
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* copyright (c) 2012 Sebastien Zwickert
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*
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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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#include "config.h"
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#include "videotoolbox.h"
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#include "libavutil/hwcontext_videotoolbox.h"
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#include "vt_internal.h"
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#include "libavutil/avutil.h"
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#include "libavutil/hwcontext.h"
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#include "bytestream.h"
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#include "decode.h"
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#include "h264dec.h"
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#include "hevcdec.h"
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#include "mpegvideo.h"
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#include <TargetConditionals.h>
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#ifndef kVTVideoDecoderSpecification_RequireHardwareAcceleratedVideoDecoder
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# define kVTVideoDecoderSpecification_RequireHardwareAcceleratedVideoDecoder CFSTR("RequireHardwareAcceleratedVideoDecoder")
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#endif
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#ifndef kVTVideoDecoderSpecification_EnableHardwareAcceleratedVideoDecoder
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# define kVTVideoDecoderSpecification_EnableHardwareAcceleratedVideoDecoder CFSTR("EnableHardwareAcceleratedVideoDecoder")
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#endif
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#if !HAVE_KCMVIDEOCODECTYPE_HEVC
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enum { kCMVideoCodecType_HEVC = 'hvc1' };
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#endif
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#define VIDEOTOOLBOX_ESDS_EXTRADATA_PADDING 12
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typedef struct VTHWFrame {
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CVPixelBufferRef pixbuf;
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AVBufferRef *hw_frames_ctx;
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} VTHWFrame;
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static void videotoolbox_buffer_release(void *opaque, uint8_t *data)
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{
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VTHWFrame *ref = (VTHWFrame *)data;
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av_buffer_unref(&ref->hw_frames_ctx);
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CVPixelBufferRelease(ref->pixbuf);
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av_free(data);
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}
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static int videotoolbox_buffer_copy(VTContext *vtctx,
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const uint8_t *buffer,
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uint32_t size)
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{
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void *tmp;
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tmp = av_fast_realloc(vtctx->bitstream,
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&vtctx->allocated_size,
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size);
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if (!tmp)
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return AVERROR(ENOMEM);
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vtctx->bitstream = tmp;
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memcpy(vtctx->bitstream, buffer, size);
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vtctx->bitstream_size = size;
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return 0;
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}
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static int videotoolbox_postproc_frame(void *avctx, AVFrame *frame)
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{
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VTHWFrame *ref = (VTHWFrame *)frame->buf[0]->data;
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if (!ref->pixbuf) {
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av_log(avctx, AV_LOG_ERROR, "No frame decoded?\n");
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av_frame_unref(frame);
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return AVERROR_EXTERNAL;
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}
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frame->data[3] = (uint8_t*)ref->pixbuf;
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if (ref->hw_frames_ctx) {
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av_buffer_unref(&frame->hw_frames_ctx);
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frame->hw_frames_ctx = av_buffer_ref(ref->hw_frames_ctx);
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if (!frame->hw_frames_ctx)
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return AVERROR(ENOMEM);
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}
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return 0;
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}
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int ff_videotoolbox_alloc_frame(AVCodecContext *avctx, AVFrame *frame)
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{
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size_t size = sizeof(VTHWFrame);
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uint8_t *data = NULL;
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AVBufferRef *buf = NULL;
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int ret = ff_attach_decode_data(frame);
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FrameDecodeData *fdd;
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if (ret < 0)
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return ret;
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data = av_mallocz(size);
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if (!data)
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return AVERROR(ENOMEM);
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buf = av_buffer_create(data, size, videotoolbox_buffer_release, NULL, 0);
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if (!buf) {
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av_freep(&data);
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return AVERROR(ENOMEM);
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}
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frame->buf[0] = buf;
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fdd = (FrameDecodeData*)frame->private_ref->data;
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fdd->post_process = videotoolbox_postproc_frame;
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frame->width = avctx->width;
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frame->height = avctx->height;
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frame->format = avctx->pix_fmt;
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return 0;
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}
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#define AV_W8(p, v) *(p) = (v)
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CFDataRef ff_videotoolbox_avcc_extradata_create(AVCodecContext *avctx)
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{
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VTContext *vtctx = avctx->internal->hwaccel_priv_data;
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H264Context *h = avctx->priv_data;
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CFDataRef data = NULL;
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uint8_t *p;
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int vt_extradata_size = 6 + 2 + h->ps.sps->data_size + 3 + h->ps.pps->data_size;
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uint8_t *vt_extradata = av_malloc(vt_extradata_size);
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if (!vt_extradata)
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return NULL;
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p = vt_extradata;
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AV_W8(p + 0, 1); /* version */
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AV_W8(p + 1, h->ps.sps->data[1]); /* profile */
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AV_W8(p + 2, h->ps.sps->data[2]); /* profile compat */
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AV_W8(p + 3, h->ps.sps->data[3]); /* level */
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AV_W8(p + 4, 0xff); /* 6 bits reserved (111111) + 2 bits nal size length - 3 (11) */
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AV_W8(p + 5, 0xe1); /* 3 bits reserved (111) + 5 bits number of sps (00001) */
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AV_WB16(p + 6, h->ps.sps->data_size);
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memcpy(p + 8, h->ps.sps->data, h->ps.sps->data_size);
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p += 8 + h->ps.sps->data_size;
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AV_W8(p + 0, 1); /* number of pps */
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AV_WB16(p + 1, h->ps.pps->data_size);
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memcpy(p + 3, h->ps.pps->data, h->ps.pps->data_size);
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p += 3 + h->ps.pps->data_size;
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av_assert0(p - vt_extradata == vt_extradata_size);
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// save sps header (profile/level) used to create decoder session,
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// so we can detect changes and recreate it.
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if (vtctx)
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memcpy(vtctx->sps, h->ps.sps->data + 1, 3);
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data = CFDataCreate(kCFAllocatorDefault, vt_extradata, vt_extradata_size);
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av_free(vt_extradata);
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return data;
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}
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CFDataRef ff_videotoolbox_hvcc_extradata_create(AVCodecContext *avctx)
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{
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HEVCContext *h = avctx->priv_data;
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const HEVCVPS *vps = (const HEVCVPS *)h->ps.vps_list[0]->data;
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const HEVCSPS *sps = (const HEVCSPS *)h->ps.sps_list[0]->data;
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int i, num_pps = 0;
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const HEVCPPS *pps = h->ps.pps;
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PTLCommon ptlc = vps->ptl.general_ptl;
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VUI vui = sps->vui;
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uint8_t parallelismType;
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CFDataRef data = NULL;
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uint8_t *p;
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int vt_extradata_size = 23 + 5 + vps->data_size + 5 + sps->data_size + 3;
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uint8_t *vt_extradata;
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for (i = 0; i < HEVC_MAX_PPS_COUNT; i++) {
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if (h->ps.pps_list[i]) {
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const HEVCPPS *pps = (const HEVCPPS *)h->ps.pps_list[i]->data;
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vt_extradata_size += 2 + pps->data_size;
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num_pps++;
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}
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}
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vt_extradata = av_malloc(vt_extradata_size);
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if (!vt_extradata)
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return NULL;
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p = vt_extradata;
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/* unsigned int(8) configurationVersion = 1; */
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AV_W8(p + 0, 1);
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/*
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* unsigned int(2) general_profile_space;
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* unsigned int(1) general_tier_flag;
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* unsigned int(5) general_profile_idc;
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*/
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AV_W8(p + 1, ptlc.profile_space << 6 |
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ptlc.tier_flag << 5 |
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ptlc.profile_idc);
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/* unsigned int(32) general_profile_compatibility_flags; */
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memcpy(p + 2, ptlc.profile_compatibility_flag, 4);
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/* unsigned int(48) general_constraint_indicator_flags; */
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AV_W8(p + 6, ptlc.progressive_source_flag << 7 |
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ptlc.interlaced_source_flag << 6 |
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ptlc.non_packed_constraint_flag << 5 |
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ptlc.frame_only_constraint_flag << 4);
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AV_W8(p + 7, 0);
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AV_WN32(p + 8, 0);
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/* unsigned int(8) general_level_idc; */
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AV_W8(p + 12, ptlc.level_idc);
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/*
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* bit(4) reserved = ‘1111’b;
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* unsigned int(12) min_spatial_segmentation_idc;
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*/
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AV_W8(p + 13, 0xf0 | (vui.min_spatial_segmentation_idc >> 4));
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AV_W8(p + 14, vui.min_spatial_segmentation_idc & 0xff);
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/*
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* bit(6) reserved = ‘111111’b;
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* unsigned int(2) parallelismType;
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*/
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if (!vui.min_spatial_segmentation_idc)
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parallelismType = 0;
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else if (pps->entropy_coding_sync_enabled_flag && pps->tiles_enabled_flag)
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parallelismType = 0;
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else if (pps->entropy_coding_sync_enabled_flag)
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parallelismType = 3;
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else if (pps->tiles_enabled_flag)
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parallelismType = 2;
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else
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parallelismType = 1;
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AV_W8(p + 15, 0xfc | parallelismType);
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/*
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* bit(6) reserved = ‘111111’b;
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* unsigned int(2) chromaFormat;
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*/
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AV_W8(p + 16, sps->chroma_format_idc | 0xfc);
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/*
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* bit(5) reserved = ‘11111’b;
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* unsigned int(3) bitDepthLumaMinus8;
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*/
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AV_W8(p + 17, (sps->bit_depth - 8) | 0xfc);
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/*
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* bit(5) reserved = ‘11111’b;
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* unsigned int(3) bitDepthChromaMinus8;
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*/
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AV_W8(p + 18, (sps->bit_depth_chroma - 8) | 0xfc);
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/* bit(16) avgFrameRate; */
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AV_WB16(p + 19, 0);
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/*
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* bit(2) constantFrameRate;
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* bit(3) numTemporalLayers;
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* bit(1) temporalIdNested;
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* unsigned int(2) lengthSizeMinusOne;
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*/
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AV_W8(p + 21, 0 << 6 |
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sps->max_sub_layers << 3 |
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sps->temporal_id_nesting_flag << 2 |
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3);
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/* unsigned int(8) numOfArrays; */
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AV_W8(p + 22, 3);
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p += 23;
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/* vps */
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/*
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* bit(1) array_completeness;
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* unsigned int(1) reserved = 0;
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* unsigned int(6) NAL_unit_type;
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*/
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AV_W8(p, 1 << 7 |
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HEVC_NAL_VPS & 0x3f);
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/* unsigned int(16) numNalus; */
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AV_WB16(p + 1, 1);
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/* unsigned int(16) nalUnitLength; */
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AV_WB16(p + 3, vps->data_size);
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/* bit(8*nalUnitLength) nalUnit; */
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memcpy(p + 5, vps->data, vps->data_size);
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p += 5 + vps->data_size;
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/* sps */
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AV_W8(p, 1 << 7 |
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HEVC_NAL_SPS & 0x3f);
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AV_WB16(p + 1, 1);
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AV_WB16(p + 3, sps->data_size);
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memcpy(p + 5, sps->data, sps->data_size);
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p += 5 + sps->data_size;
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/* pps */
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AV_W8(p, 1 << 7 |
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HEVC_NAL_PPS & 0x3f);
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AV_WB16(p + 1, num_pps);
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p += 3;
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for (i = 0; i < HEVC_MAX_PPS_COUNT; i++) {
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if (h->ps.pps_list[i]) {
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const HEVCPPS *pps = (const HEVCPPS *)h->ps.pps_list[i]->data;
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AV_WB16(p, pps->data_size);
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memcpy(p + 2, pps->data, pps->data_size);
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p += 2 + pps->data_size;
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}
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}
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av_assert0(p - vt_extradata == vt_extradata_size);
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data = CFDataCreate(kCFAllocatorDefault, vt_extradata, vt_extradata_size);
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av_free(vt_extradata);
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return data;
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}
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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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{
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VTContext *vtctx = avctx->internal->hwaccel_priv_data;
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H264Context *h = avctx->priv_data;
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if (h->is_avc == 1) {
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return videotoolbox_buffer_copy(vtctx, buffer, size);
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}
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return 0;
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}
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static int videotoolbox_h264_decode_params(AVCodecContext *avctx,
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int type,
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const uint8_t *buffer,
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uint32_t size)
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{
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VTContext *vtctx = avctx->internal->hwaccel_priv_data;
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H264Context *h = avctx->priv_data;
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// save sps header (profile/level) used to create decoder session
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if (!vtctx->sps[0])
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memcpy(vtctx->sps, h->ps.sps->data + 1, 3);
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if (type == H264_NAL_SPS) {
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if (size > 4 && memcmp(vtctx->sps, buffer + 1, 3) != 0) {
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vtctx->reconfig_needed = true;
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memcpy(vtctx->sps, buffer + 1, 3);
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}
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}
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// pass-through SPS/PPS changes to the decoder
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return ff_videotoolbox_h264_decode_slice(avctx, buffer, size);
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}
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static int videotoolbox_common_decode_slice(AVCodecContext *avctx,
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const uint8_t *buffer,
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uint32_t size)
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{
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VTContext *vtctx = avctx->internal->hwaccel_priv_data;
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void *tmp;
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tmp = av_fast_realloc(vtctx->bitstream,
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&vtctx->allocated_size,
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vtctx->bitstream_size+size+4);
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if (!tmp)
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return AVERROR(ENOMEM);
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vtctx->bitstream = tmp;
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AV_WB32(vtctx->bitstream + vtctx->bitstream_size, size);
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memcpy(vtctx->bitstream + vtctx->bitstream_size + 4, buffer, size);
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vtctx->bitstream_size += size + 4;
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return 0;
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}
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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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{
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H264Context *h = avctx->priv_data;
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if (h->is_avc == 1)
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return 0;
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return videotoolbox_common_decode_slice(avctx, buffer, size);
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}
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int ff_videotoolbox_uninit(AVCodecContext *avctx)
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{
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VTContext *vtctx = avctx->internal->hwaccel_priv_data;
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if (vtctx) {
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av_freep(&vtctx->bitstream);
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if (vtctx->frame)
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CVPixelBufferRelease(vtctx->frame);
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}
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return 0;
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}
|
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|
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#if CONFIG_VIDEOTOOLBOX
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// Return the AVVideotoolboxContext that matters currently. Where it comes from
|
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// depends on the API used.
|
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static AVVideotoolboxContext *videotoolbox_get_context(AVCodecContext *avctx)
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{
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// Somewhat tricky because the user can call av_videotoolbox_default_free()
|
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// at any time, even when the codec is closed.
|
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if (avctx->internal && avctx->internal->hwaccel_priv_data) {
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VTContext *vtctx = avctx->internal->hwaccel_priv_data;
|
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if (vtctx->vt_ctx)
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return vtctx->vt_ctx;
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}
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return avctx->hwaccel_context;
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}
|
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|
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static int videotoolbox_buffer_create(AVCodecContext *avctx, AVFrame *frame)
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{
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VTContext *vtctx = avctx->internal->hwaccel_priv_data;
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CVPixelBufferRef pixbuf = (CVPixelBufferRef)vtctx->frame;
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OSType pixel_format = CVPixelBufferGetPixelFormatType(pixbuf);
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enum AVPixelFormat sw_format = av_map_videotoolbox_format_to_pixfmt(pixel_format);
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int width = CVPixelBufferGetWidth(pixbuf);
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int height = CVPixelBufferGetHeight(pixbuf);
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AVHWFramesContext *cached_frames;
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VTHWFrame *ref;
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int ret;
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if (!frame->buf[0] || frame->data[3]) {
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av_log(avctx, AV_LOG_ERROR, "videotoolbox: invalid state\n");
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av_frame_unref(frame);
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return AVERROR_EXTERNAL;
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}
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ref = (VTHWFrame *)frame->buf[0]->data;
|
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|
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if (ref->pixbuf)
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CVPixelBufferRelease(ref->pixbuf);
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ref->pixbuf = vtctx->frame;
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vtctx->frame = NULL;
|
||
|
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// Old API code path.
|
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if (!vtctx->cached_hw_frames_ctx)
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return 0;
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||
|
||
cached_frames = (AVHWFramesContext*)vtctx->cached_hw_frames_ctx->data;
|
||
|
||
if (cached_frames->sw_format != sw_format ||
|
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cached_frames->width != width ||
|
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cached_frames->height != height) {
|
||
AVBufferRef *hw_frames_ctx = av_hwframe_ctx_alloc(cached_frames->device_ref);
|
||
AVHWFramesContext *hw_frames;
|
||
if (!hw_frames_ctx)
|
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return AVERROR(ENOMEM);
|
||
|
||
hw_frames = (AVHWFramesContext*)hw_frames_ctx->data;
|
||
hw_frames->format = cached_frames->format;
|
||
hw_frames->sw_format = sw_format;
|
||
hw_frames->width = width;
|
||
hw_frames->height = height;
|
||
|
||
ret = av_hwframe_ctx_init(hw_frames_ctx);
|
||
if (ret < 0) {
|
||
av_buffer_unref(&hw_frames_ctx);
|
||
return ret;
|
||
}
|
||
|
||
av_buffer_unref(&vtctx->cached_hw_frames_ctx);
|
||
vtctx->cached_hw_frames_ctx = hw_frames_ctx;
|
||
}
|
||
|
||
av_buffer_unref(&ref->hw_frames_ctx);
|
||
ref->hw_frames_ctx = av_buffer_ref(vtctx->cached_hw_frames_ctx);
|
||
if (!ref->hw_frames_ctx)
|
||
return AVERROR(ENOMEM);
|
||
|
||
return 0;
|
||
}
|
||
|
||
static void videotoolbox_write_mp4_descr_length(PutByteContext *pb, int length)
|
||
{
|
||
int i;
|
||
uint8_t b;
|
||
|
||
for (i = 3; i >= 0; i--) {
|
||
b = (length >> (i * 7)) & 0x7F;
|
||
if (i != 0)
|
||
b |= 0x80;
|
||
|
||
bytestream2_put_byteu(pb, b);
|
||
}
|
||
}
|
||
|
||
static CFDataRef videotoolbox_esds_extradata_create(AVCodecContext *avctx)
|
||
{
|
||
CFDataRef data;
|
||
uint8_t *rw_extradata;
|
||
PutByteContext pb;
|
||
int full_size = 3 + 5 + 13 + 5 + avctx->extradata_size + 3;
|
||
// ES_DescrTag data + DecoderConfigDescrTag + data + DecSpecificInfoTag + size + SLConfigDescriptor
|
||
int config_size = 13 + 5 + avctx->extradata_size;
|
||
int s;
|
||
|
||
if (!(rw_extradata = av_mallocz(full_size + VIDEOTOOLBOX_ESDS_EXTRADATA_PADDING)))
|
||
return NULL;
|
||
|
||
bytestream2_init_writer(&pb, rw_extradata, full_size + VIDEOTOOLBOX_ESDS_EXTRADATA_PADDING);
|
||
bytestream2_put_byteu(&pb, 0); // version
|
||
bytestream2_put_ne24(&pb, 0); // flags
|
||
|
||
// elementary stream descriptor
|
||
bytestream2_put_byteu(&pb, 0x03); // ES_DescrTag
|
||
videotoolbox_write_mp4_descr_length(&pb, full_size);
|
||
bytestream2_put_ne16(&pb, 0); // esid
|
||
bytestream2_put_byteu(&pb, 0); // stream priority (0-32)
|
||
|
||
// decoder configuration descriptor
|
||
bytestream2_put_byteu(&pb, 0x04); // DecoderConfigDescrTag
|
||
videotoolbox_write_mp4_descr_length(&pb, config_size);
|
||
bytestream2_put_byteu(&pb, 32); // object type indication. 32 = AV_CODEC_ID_MPEG4
|
||
bytestream2_put_byteu(&pb, 0x11); // stream type
|
||
bytestream2_put_ne24(&pb, 0); // buffer size
|
||
bytestream2_put_ne32(&pb, 0); // max bitrate
|
||
bytestream2_put_ne32(&pb, 0); // avg bitrate
|
||
|
||
// decoder specific descriptor
|
||
bytestream2_put_byteu(&pb, 0x05); ///< DecSpecificInfoTag
|
||
videotoolbox_write_mp4_descr_length(&pb, avctx->extradata_size);
|
||
|
||
bytestream2_put_buffer(&pb, avctx->extradata, avctx->extradata_size);
|
||
|
||
// SLConfigDescriptor
|
||
bytestream2_put_byteu(&pb, 0x06); // SLConfigDescrTag
|
||
bytestream2_put_byteu(&pb, 0x01); // length
|
||
bytestream2_put_byteu(&pb, 0x02); //
|
||
|
||
s = bytestream2_size_p(&pb);
|
||
|
||
data = CFDataCreate(kCFAllocatorDefault, rw_extradata, s);
|
||
|
||
av_freep(&rw_extradata);
|
||
return data;
|
||
}
|
||
|
||
static CMSampleBufferRef videotoolbox_sample_buffer_create(CMFormatDescriptionRef fmt_desc,
|
||
void *buffer,
|
||
int size)
|
||
{
|
||
OSStatus status;
|
||
CMBlockBufferRef block_buf;
|
||
CMSampleBufferRef sample_buf;
|
||
|
||
block_buf = NULL;
|
||
sample_buf = NULL;
|
||
|
||
status = CMBlockBufferCreateWithMemoryBlock(kCFAllocatorDefault,// structureAllocator
|
||
buffer, // memoryBlock
|
||
size, // blockLength
|
||
kCFAllocatorNull, // blockAllocator
|
||
NULL, // customBlockSource
|
||
0, // offsetToData
|
||
size, // dataLength
|
||
0, // flags
|
||
&block_buf);
|
||
|
||
if (!status) {
|
||
status = CMSampleBufferCreate(kCFAllocatorDefault, // allocator
|
||
block_buf, // dataBuffer
|
||
TRUE, // dataReady
|
||
0, // makeDataReadyCallback
|
||
0, // makeDataReadyRefcon
|
||
fmt_desc, // formatDescription
|
||
1, // numSamples
|
||
0, // numSampleTimingEntries
|
||
NULL, // sampleTimingArray
|
||
0, // numSampleSizeEntries
|
||
NULL, // sampleSizeArray
|
||
&sample_buf);
|
||
}
|
||
|
||
if (block_buf)
|
||
CFRelease(block_buf);
|
||
|
||
return sample_buf;
|
||
}
|
||
|
||
static void videotoolbox_decoder_callback(void *opaque,
|
||
void *sourceFrameRefCon,
|
||
OSStatus status,
|
||
VTDecodeInfoFlags flags,
|
||
CVImageBufferRef image_buffer,
|
||
CMTime pts,
|
||
CMTime duration)
|
||
{
|
||
AVCodecContext *avctx = opaque;
|
||
VTContext *vtctx = avctx->internal->hwaccel_priv_data;
|
||
|
||
if (vtctx->frame) {
|
||
CVPixelBufferRelease(vtctx->frame);
|
||
vtctx->frame = NULL;
|
||
}
|
||
|
||
if (!image_buffer) {
|
||
av_log(NULL, AV_LOG_DEBUG, "vt decoder cb: output image buffer is null\n");
|
||
return;
|
||
}
|
||
|
||
vtctx->frame = CVPixelBufferRetain(image_buffer);
|
||
}
|
||
|
||
static OSStatus videotoolbox_session_decode_frame(AVCodecContext *avctx)
|
||
{
|
||
OSStatus status;
|
||
CMSampleBufferRef sample_buf;
|
||
AVVideotoolboxContext *videotoolbox = videotoolbox_get_context(avctx);
|
||
VTContext *vtctx = avctx->internal->hwaccel_priv_data;
|
||
|
||
sample_buf = videotoolbox_sample_buffer_create(videotoolbox->cm_fmt_desc,
|
||
vtctx->bitstream,
|
||
vtctx->bitstream_size);
|
||
|
||
if (!sample_buf)
|
||
return -1;
|
||
|
||
status = VTDecompressionSessionDecodeFrame(videotoolbox->session,
|
||
sample_buf,
|
||
0, // decodeFlags
|
||
NULL, // sourceFrameRefCon
|
||
0); // infoFlagsOut
|
||
if (status == noErr)
|
||
status = VTDecompressionSessionWaitForAsynchronousFrames(videotoolbox->session);
|
||
|
||
CFRelease(sample_buf);
|
||
|
||
return status;
|
||
}
|
||
|
||
static CMVideoFormatDescriptionRef videotoolbox_format_desc_create(CMVideoCodecType codec_type,
|
||
CFDictionaryRef decoder_spec,
|
||
int width,
|
||
int height)
|
||
{
|
||
CMFormatDescriptionRef cm_fmt_desc;
|
||
OSStatus status;
|
||
|
||
status = CMVideoFormatDescriptionCreate(kCFAllocatorDefault,
|
||
codec_type,
|
||
width,
|
||
height,
|
||
decoder_spec, // Dictionary of extension
|
||
&cm_fmt_desc);
|
||
|
||
if (status)
|
||
return NULL;
|
||
|
||
return cm_fmt_desc;
|
||
}
|
||
|
||
static CFDictionaryRef videotoolbox_buffer_attributes_create(int width,
|
||
int height,
|
||
OSType pix_fmt)
|
||
{
|
||
CFMutableDictionaryRef buffer_attributes;
|
||
CFMutableDictionaryRef io_surface_properties;
|
||
CFNumberRef cv_pix_fmt;
|
||
CFNumberRef w;
|
||
CFNumberRef h;
|
||
|
||
w = CFNumberCreate(kCFAllocatorDefault, kCFNumberSInt32Type, &width);
|
||
h = CFNumberCreate(kCFAllocatorDefault, kCFNumberSInt32Type, &height);
|
||
cv_pix_fmt = CFNumberCreate(kCFAllocatorDefault, kCFNumberSInt32Type, &pix_fmt);
|
||
|
||
buffer_attributes = CFDictionaryCreateMutable(kCFAllocatorDefault,
|
||
4,
|
||
&kCFTypeDictionaryKeyCallBacks,
|
||
&kCFTypeDictionaryValueCallBacks);
|
||
io_surface_properties = CFDictionaryCreateMutable(kCFAllocatorDefault,
|
||
0,
|
||
&kCFTypeDictionaryKeyCallBacks,
|
||
&kCFTypeDictionaryValueCallBacks);
|
||
|
||
if (pix_fmt)
|
||
CFDictionarySetValue(buffer_attributes, kCVPixelBufferPixelFormatTypeKey, cv_pix_fmt);
|
||
CFDictionarySetValue(buffer_attributes, kCVPixelBufferIOSurfacePropertiesKey, io_surface_properties);
|
||
CFDictionarySetValue(buffer_attributes, kCVPixelBufferWidthKey, w);
|
||
CFDictionarySetValue(buffer_attributes, kCVPixelBufferHeightKey, h);
|
||
#if TARGET_OS_IPHONE
|
||
CFDictionarySetValue(buffer_attributes, kCVPixelBufferOpenGLESCompatibilityKey, kCFBooleanTrue);
|
||
#else
|
||
CFDictionarySetValue(buffer_attributes, kCVPixelBufferIOSurfaceOpenGLTextureCompatibilityKey, kCFBooleanTrue);
|
||
#endif
|
||
|
||
CFRelease(io_surface_properties);
|
||
CFRelease(cv_pix_fmt);
|
||
CFRelease(w);
|
||
CFRelease(h);
|
||
|
||
return buffer_attributes;
|
||
}
|
||
|
||
static CFDictionaryRef videotoolbox_decoder_config_create(CMVideoCodecType codec_type,
|
||
AVCodecContext *avctx)
|
||
{
|
||
CFMutableDictionaryRef config_info = CFDictionaryCreateMutable(kCFAllocatorDefault,
|
||
0,
|
||
&kCFTypeDictionaryKeyCallBacks,
|
||
&kCFTypeDictionaryValueCallBacks);
|
||
|
||
CFDictionarySetValue(config_info,
|
||
codec_type == kCMVideoCodecType_HEVC ?
|
||
kVTVideoDecoderSpecification_EnableHardwareAcceleratedVideoDecoder :
|
||
kVTVideoDecoderSpecification_RequireHardwareAcceleratedVideoDecoder,
|
||
kCFBooleanTrue);
|
||
|
||
CFMutableDictionaryRef avc_info;
|
||
CFDataRef data = NULL;
|
||
|
||
avc_info = CFDictionaryCreateMutable(kCFAllocatorDefault,
|
||
1,
|
||
&kCFTypeDictionaryKeyCallBacks,
|
||
&kCFTypeDictionaryValueCallBacks);
|
||
|
||
switch (codec_type) {
|
||
case kCMVideoCodecType_MPEG4Video :
|
||
if (avctx->extradata_size)
|
||
data = videotoolbox_esds_extradata_create(avctx);
|
||
if (data)
|
||
CFDictionarySetValue(avc_info, CFSTR("esds"), data);
|
||
break;
|
||
case kCMVideoCodecType_H264 :
|
||
data = ff_videotoolbox_avcc_extradata_create(avctx);
|
||
if (data)
|
||
CFDictionarySetValue(avc_info, CFSTR("avcC"), data);
|
||
break;
|
||
case kCMVideoCodecType_HEVC :
|
||
data = ff_videotoolbox_hvcc_extradata_create(avctx);
|
||
if (data)
|
||
CFDictionarySetValue(avc_info, CFSTR("hvcC"), data);
|
||
break;
|
||
default:
|
||
break;
|
||
}
|
||
|
||
CFDictionarySetValue(config_info,
|
||
kCMFormatDescriptionExtension_SampleDescriptionExtensionAtoms,
|
||
avc_info);
|
||
|
||
if (data)
|
||
CFRelease(data);
|
||
|
||
CFRelease(avc_info);
|
||
return config_info;
|
||
}
|
||
|
||
static int videotoolbox_start(AVCodecContext *avctx)
|
||
{
|
||
AVVideotoolboxContext *videotoolbox = videotoolbox_get_context(avctx);
|
||
OSStatus status;
|
||
VTDecompressionOutputCallbackRecord decoder_cb;
|
||
CFDictionaryRef decoder_spec;
|
||
CFDictionaryRef buf_attr;
|
||
|
||
if (!videotoolbox) {
|
||
av_log(avctx, AV_LOG_ERROR, "hwaccel context is not set\n");
|
||
return -1;
|
||
}
|
||
|
||
switch( avctx->codec_id ) {
|
||
case AV_CODEC_ID_H263 :
|
||
videotoolbox->cm_codec_type = kCMVideoCodecType_H263;
|
||
break;
|
||
case AV_CODEC_ID_H264 :
|
||
videotoolbox->cm_codec_type = kCMVideoCodecType_H264;
|
||
break;
|
||
case AV_CODEC_ID_HEVC :
|
||
videotoolbox->cm_codec_type = kCMVideoCodecType_HEVC;
|
||
break;
|
||
case AV_CODEC_ID_MPEG1VIDEO :
|
||
videotoolbox->cm_codec_type = kCMVideoCodecType_MPEG1Video;
|
||
break;
|
||
case AV_CODEC_ID_MPEG2VIDEO :
|
||
videotoolbox->cm_codec_type = kCMVideoCodecType_MPEG2Video;
|
||
break;
|
||
case AV_CODEC_ID_MPEG4 :
|
||
videotoolbox->cm_codec_type = kCMVideoCodecType_MPEG4Video;
|
||
break;
|
||
default :
|
||
break;
|
||
}
|
||
|
||
decoder_spec = videotoolbox_decoder_config_create(videotoolbox->cm_codec_type, avctx);
|
||
|
||
if (!decoder_spec) {
|
||
av_log(avctx, AV_LOG_ERROR, "decoder specification creation failed\n");
|
||
return -1;
|
||
}
|
||
|
||
videotoolbox->cm_fmt_desc = videotoolbox_format_desc_create(videotoolbox->cm_codec_type,
|
||
decoder_spec,
|
||
avctx->width,
|
||
avctx->height);
|
||
if (!videotoolbox->cm_fmt_desc) {
|
||
if (decoder_spec)
|
||
CFRelease(decoder_spec);
|
||
|
||
av_log(avctx, AV_LOG_ERROR, "format description creation failed\n");
|
||
return -1;
|
||
}
|
||
|
||
buf_attr = videotoolbox_buffer_attributes_create(avctx->width,
|
||
avctx->height,
|
||
videotoolbox->cv_pix_fmt_type);
|
||
|
||
decoder_cb.decompressionOutputCallback = videotoolbox_decoder_callback;
|
||
decoder_cb.decompressionOutputRefCon = avctx;
|
||
|
||
status = VTDecompressionSessionCreate(NULL, // allocator
|
||
videotoolbox->cm_fmt_desc, // videoFormatDescription
|
||
decoder_spec, // videoDecoderSpecification
|
||
buf_attr, // destinationImageBufferAttributes
|
||
&decoder_cb, // outputCallback
|
||
&videotoolbox->session); // decompressionSessionOut
|
||
|
||
if (decoder_spec)
|
||
CFRelease(decoder_spec);
|
||
if (buf_attr)
|
||
CFRelease(buf_attr);
|
||
|
||
switch (status) {
|
||
case kVTVideoDecoderNotAvailableNowErr:
|
||
av_log(avctx, AV_LOG_VERBOSE, "VideoToolbox session not available.\n");
|
||
return AVERROR(ENOSYS);
|
||
case kVTVideoDecoderUnsupportedDataFormatErr:
|
||
av_log(avctx, AV_LOG_VERBOSE, "VideoToolbox does not support this format.\n");
|
||
return AVERROR(ENOSYS);
|
||
case kVTCouldNotFindVideoDecoderErr:
|
||
av_log(avctx, AV_LOG_VERBOSE, "VideoToolbox decoder for this format not found.\n");
|
||
return AVERROR(ENOSYS);
|
||
case kVTVideoDecoderMalfunctionErr:
|
||
av_log(avctx, AV_LOG_VERBOSE, "VideoToolbox malfunction.\n");
|
||
return AVERROR(EINVAL);
|
||
case kVTVideoDecoderBadDataErr:
|
||
av_log(avctx, AV_LOG_VERBOSE, "VideoToolbox reported invalid data.\n");
|
||
return AVERROR_INVALIDDATA;
|
||
case 0:
|
||
return 0;
|
||
default:
|
||
av_log(avctx, AV_LOG_VERBOSE, "Unknown VideoToolbox session creation error %d\n", (int)status);
|
||
return AVERROR_UNKNOWN;
|
||
}
|
||
}
|
||
|
||
static void videotoolbox_stop(AVCodecContext *avctx)
|
||
{
|
||
AVVideotoolboxContext *videotoolbox = videotoolbox_get_context(avctx);
|
||
if (!videotoolbox)
|
||
return;
|
||
|
||
if (videotoolbox->cm_fmt_desc) {
|
||
CFRelease(videotoolbox->cm_fmt_desc);
|
||
videotoolbox->cm_fmt_desc = NULL;
|
||
}
|
||
|
||
if (videotoolbox->session) {
|
||
VTDecompressionSessionInvalidate(videotoolbox->session);
|
||
CFRelease(videotoolbox->session);
|
||
videotoolbox->session = NULL;
|
||
}
|
||
}
|
||
|
||
static const char *videotoolbox_error_string(OSStatus status)
|
||
{
|
||
switch (status) {
|
||
case kVTVideoDecoderBadDataErr:
|
||
return "bad data";
|
||
case kVTVideoDecoderMalfunctionErr:
|
||
return "decoder malfunction";
|
||
case kVTInvalidSessionErr:
|
||
return "invalid session";
|
||
}
|
||
return "unknown";
|
||
}
|
||
|
||
static int videotoolbox_common_end_frame(AVCodecContext *avctx, AVFrame *frame)
|
||
{
|
||
OSStatus status;
|
||
AVVideotoolboxContext *videotoolbox = videotoolbox_get_context(avctx);
|
||
VTContext *vtctx = avctx->internal->hwaccel_priv_data;
|
||
|
||
frame->crop_right = 0;
|
||
frame->crop_left = 0;
|
||
frame->crop_top = 0;
|
||
frame->crop_bottom = 0;
|
||
|
||
if (vtctx->reconfig_needed == true) {
|
||
vtctx->reconfig_needed = false;
|
||
av_log(avctx, AV_LOG_VERBOSE, "VideoToolbox decoder needs reconfig, restarting..\n");
|
||
videotoolbox_stop(avctx);
|
||
if (videotoolbox_start(avctx) != 0) {
|
||
return AVERROR_EXTERNAL;
|
||
}
|
||
}
|
||
|
||
if (!videotoolbox->session || !vtctx->bitstream || !vtctx->bitstream_size)
|
||
return AVERROR_INVALIDDATA;
|
||
|
||
status = videotoolbox_session_decode_frame(avctx);
|
||
if (status != noErr) {
|
||
if (status == kVTVideoDecoderMalfunctionErr || status == kVTInvalidSessionErr)
|
||
vtctx->reconfig_needed = true;
|
||
av_log(avctx, AV_LOG_ERROR, "Failed to decode frame (%s, %d)\n", videotoolbox_error_string(status), (int)status);
|
||
return AVERROR_UNKNOWN;
|
||
}
|
||
|
||
if (!vtctx->frame) {
|
||
vtctx->reconfig_needed = true;
|
||
return AVERROR_UNKNOWN;
|
||
}
|
||
|
||
return videotoolbox_buffer_create(avctx, frame);
|
||
}
|
||
|
||
static int videotoolbox_h264_end_frame(AVCodecContext *avctx)
|
||
{
|
||
H264Context *h = avctx->priv_data;
|
||
AVFrame *frame = h->cur_pic_ptr->f;
|
||
VTContext *vtctx = avctx->internal->hwaccel_priv_data;
|
||
int ret = videotoolbox_common_end_frame(avctx, frame);
|
||
vtctx->bitstream_size = 0;
|
||
return ret;
|
||
}
|
||
|
||
static int videotoolbox_hevc_start_frame(AVCodecContext *avctx,
|
||
const uint8_t *buffer,
|
||
uint32_t size)
|
||
{
|
||
return 0;
|
||
}
|
||
|
||
static int videotoolbox_hevc_decode_slice(AVCodecContext *avctx,
|
||
const uint8_t *buffer,
|
||
uint32_t size)
|
||
{
|
||
return videotoolbox_common_decode_slice(avctx, buffer, size);
|
||
}
|
||
|
||
|
||
static int videotoolbox_hevc_decode_params(AVCodecContext *avctx,
|
||
int type,
|
||
const uint8_t *buffer,
|
||
uint32_t size)
|
||
{
|
||
return videotoolbox_common_decode_slice(avctx, buffer, size);
|
||
}
|
||
|
||
static int videotoolbox_hevc_end_frame(AVCodecContext *avctx)
|
||
{
|
||
HEVCContext *h = avctx->priv_data;
|
||
AVFrame *frame = h->ref->frame;
|
||
VTContext *vtctx = avctx->internal->hwaccel_priv_data;
|
||
|
||
h->output_frame->crop_right = 0;
|
||
h->output_frame->crop_left = 0;
|
||
h->output_frame->crop_top = 0;
|
||
h->output_frame->crop_bottom = 0;
|
||
|
||
int ret = videotoolbox_common_end_frame(avctx, frame);
|
||
vtctx->bitstream_size = 0;
|
||
return ret;
|
||
}
|
||
|
||
static int videotoolbox_mpeg_start_frame(AVCodecContext *avctx,
|
||
const uint8_t *buffer,
|
||
uint32_t size)
|
||
{
|
||
VTContext *vtctx = avctx->internal->hwaccel_priv_data;
|
||
|
||
return videotoolbox_buffer_copy(vtctx, buffer, size);
|
||
}
|
||
|
||
static int videotoolbox_mpeg_decode_slice(AVCodecContext *avctx,
|
||
const uint8_t *buffer,
|
||
uint32_t size)
|
||
{
|
||
return 0;
|
||
}
|
||
|
||
static int videotoolbox_mpeg_end_frame(AVCodecContext *avctx)
|
||
{
|
||
MpegEncContext *s = avctx->priv_data;
|
||
AVFrame *frame = s->current_picture_ptr->f;
|
||
|
||
return videotoolbox_common_end_frame(avctx, frame);
|
||
}
|
||
|
||
static int videotoolbox_uninit(AVCodecContext *avctx)
|
||
{
|
||
VTContext *vtctx = avctx->internal->hwaccel_priv_data;
|
||
if (!vtctx)
|
||
return 0;
|
||
|
||
ff_videotoolbox_uninit(avctx);
|
||
|
||
if (vtctx->vt_ctx)
|
||
videotoolbox_stop(avctx);
|
||
|
||
av_buffer_unref(&vtctx->cached_hw_frames_ctx);
|
||
av_freep(&vtctx->vt_ctx);
|
||
|
||
return 0;
|
||
}
|
||
|
||
static int videotoolbox_common_init(AVCodecContext *avctx)
|
||
{
|
||
VTContext *vtctx = avctx->internal->hwaccel_priv_data;
|
||
AVHWFramesContext *hw_frames;
|
||
int err;
|
||
|
||
// Old API - do nothing.
|
||
if (avctx->hwaccel_context)
|
||
return 0;
|
||
|
||
if (!avctx->hw_frames_ctx && !avctx->hw_device_ctx) {
|
||
av_log(avctx, AV_LOG_ERROR,
|
||
"Either hw_frames_ctx or hw_device_ctx must be set.\n");
|
||
return AVERROR(EINVAL);
|
||
}
|
||
|
||
vtctx->vt_ctx = av_videotoolbox_alloc_context();
|
||
if (!vtctx->vt_ctx) {
|
||
err = AVERROR(ENOMEM);
|
||
goto fail;
|
||
}
|
||
|
||
if (avctx->hw_frames_ctx) {
|
||
hw_frames = (AVHWFramesContext*)avctx->hw_frames_ctx->data;
|
||
} else {
|
||
avctx->hw_frames_ctx = av_hwframe_ctx_alloc(avctx->hw_device_ctx);
|
||
if (!avctx->hw_frames_ctx) {
|
||
err = AVERROR(ENOMEM);
|
||
goto fail;
|
||
}
|
||
|
||
hw_frames = (AVHWFramesContext*)avctx->hw_frames_ctx->data;
|
||
hw_frames->format = AV_PIX_FMT_VIDEOTOOLBOX;
|
||
hw_frames->sw_format = AV_PIX_FMT_NV12; // same as av_videotoolbox_alloc_context()
|
||
hw_frames->width = avctx->width;
|
||
hw_frames->height = avctx->height;
|
||
|
||
err = av_hwframe_ctx_init(avctx->hw_frames_ctx);
|
||
if (err < 0) {
|
||
av_buffer_unref(&avctx->hw_frames_ctx);
|
||
goto fail;
|
||
}
|
||
}
|
||
|
||
vtctx->cached_hw_frames_ctx = av_buffer_ref(avctx->hw_frames_ctx);
|
||
if (!vtctx->cached_hw_frames_ctx) {
|
||
err = AVERROR(ENOMEM);
|
||
goto fail;
|
||
}
|
||
|
||
vtctx->vt_ctx->cv_pix_fmt_type =
|
||
av_map_videotoolbox_format_from_pixfmt(hw_frames->sw_format);
|
||
if (!vtctx->vt_ctx->cv_pix_fmt_type) {
|
||
av_log(avctx, AV_LOG_ERROR, "Unknown sw_format.\n");
|
||
err = AVERROR(EINVAL);
|
||
goto fail;
|
||
}
|
||
|
||
err = videotoolbox_start(avctx);
|
||
if (err < 0)
|
||
goto fail;
|
||
|
||
return 0;
|
||
|
||
fail:
|
||
videotoolbox_uninit(avctx);
|
||
return err;
|
||
}
|
||
|
||
static int videotoolbox_frame_params(AVCodecContext *avctx,
|
||
AVBufferRef *hw_frames_ctx)
|
||
{
|
||
AVHWFramesContext *frames_ctx = (AVHWFramesContext*)hw_frames_ctx->data;
|
||
|
||
frames_ctx->format = AV_PIX_FMT_VIDEOTOOLBOX;
|
||
frames_ctx->width = avctx->coded_width;
|
||
frames_ctx->height = avctx->coded_height;
|
||
frames_ctx->sw_format = AV_PIX_FMT_NV12;
|
||
|
||
return 0;
|
||
}
|
||
|
||
const AVHWAccel ff_h263_videotoolbox_hwaccel = {
|
||
.name = "h263_videotoolbox",
|
||
.type = AVMEDIA_TYPE_VIDEO,
|
||
.id = AV_CODEC_ID_H263,
|
||
.pix_fmt = AV_PIX_FMT_VIDEOTOOLBOX,
|
||
.alloc_frame = ff_videotoolbox_alloc_frame,
|
||
.start_frame = videotoolbox_mpeg_start_frame,
|
||
.decode_slice = videotoolbox_mpeg_decode_slice,
|
||
.end_frame = videotoolbox_mpeg_end_frame,
|
||
.frame_params = videotoolbox_frame_params,
|
||
.init = videotoolbox_common_init,
|
||
.uninit = videotoolbox_uninit,
|
||
.priv_data_size = sizeof(VTContext),
|
||
};
|
||
|
||
const AVHWAccel ff_hevc_videotoolbox_hwaccel = {
|
||
.name = "hevc_videotoolbox",
|
||
.type = AVMEDIA_TYPE_VIDEO,
|
||
.id = AV_CODEC_ID_HEVC,
|
||
.pix_fmt = AV_PIX_FMT_VIDEOTOOLBOX,
|
||
.alloc_frame = ff_videotoolbox_alloc_frame,
|
||
.start_frame = videotoolbox_hevc_start_frame,
|
||
.decode_slice = videotoolbox_hevc_decode_slice,
|
||
.decode_params = videotoolbox_hevc_decode_params,
|
||
.end_frame = videotoolbox_hevc_end_frame,
|
||
.frame_params = videotoolbox_frame_params,
|
||
.init = videotoolbox_common_init,
|
||
.uninit = ff_videotoolbox_uninit,
|
||
.priv_data_size = sizeof(VTContext),
|
||
};
|
||
|
||
const AVHWAccel ff_h264_videotoolbox_hwaccel = {
|
||
.name = "h264_videotoolbox",
|
||
.type = AVMEDIA_TYPE_VIDEO,
|
||
.id = AV_CODEC_ID_H264,
|
||
.pix_fmt = AV_PIX_FMT_VIDEOTOOLBOX,
|
||
.alloc_frame = ff_videotoolbox_alloc_frame,
|
||
.start_frame = ff_videotoolbox_h264_start_frame,
|
||
.decode_slice = ff_videotoolbox_h264_decode_slice,
|
||
.decode_params = videotoolbox_h264_decode_params,
|
||
.end_frame = videotoolbox_h264_end_frame,
|
||
.frame_params = videotoolbox_frame_params,
|
||
.init = videotoolbox_common_init,
|
||
.uninit = videotoolbox_uninit,
|
||
.priv_data_size = sizeof(VTContext),
|
||
};
|
||
|
||
const AVHWAccel ff_mpeg1_videotoolbox_hwaccel = {
|
||
.name = "mpeg1_videotoolbox",
|
||
.type = AVMEDIA_TYPE_VIDEO,
|
||
.id = AV_CODEC_ID_MPEG1VIDEO,
|
||
.pix_fmt = AV_PIX_FMT_VIDEOTOOLBOX,
|
||
.alloc_frame = ff_videotoolbox_alloc_frame,
|
||
.start_frame = videotoolbox_mpeg_start_frame,
|
||
.decode_slice = videotoolbox_mpeg_decode_slice,
|
||
.end_frame = videotoolbox_mpeg_end_frame,
|
||
.frame_params = videotoolbox_frame_params,
|
||
.init = videotoolbox_common_init,
|
||
.uninit = videotoolbox_uninit,
|
||
.priv_data_size = sizeof(VTContext),
|
||
};
|
||
|
||
const AVHWAccel ff_mpeg2_videotoolbox_hwaccel = {
|
||
.name = "mpeg2_videotoolbox",
|
||
.type = AVMEDIA_TYPE_VIDEO,
|
||
.id = AV_CODEC_ID_MPEG2VIDEO,
|
||
.pix_fmt = AV_PIX_FMT_VIDEOTOOLBOX,
|
||
.alloc_frame = ff_videotoolbox_alloc_frame,
|
||
.start_frame = videotoolbox_mpeg_start_frame,
|
||
.decode_slice = videotoolbox_mpeg_decode_slice,
|
||
.end_frame = videotoolbox_mpeg_end_frame,
|
||
.frame_params = videotoolbox_frame_params,
|
||
.init = videotoolbox_common_init,
|
||
.uninit = videotoolbox_uninit,
|
||
.priv_data_size = sizeof(VTContext),
|
||
};
|
||
|
||
const AVHWAccel ff_mpeg4_videotoolbox_hwaccel = {
|
||
.name = "mpeg4_videotoolbox",
|
||
.type = AVMEDIA_TYPE_VIDEO,
|
||
.id = AV_CODEC_ID_MPEG4,
|
||
.pix_fmt = AV_PIX_FMT_VIDEOTOOLBOX,
|
||
.alloc_frame = ff_videotoolbox_alloc_frame,
|
||
.start_frame = videotoolbox_mpeg_start_frame,
|
||
.decode_slice = videotoolbox_mpeg_decode_slice,
|
||
.end_frame = videotoolbox_mpeg_end_frame,
|
||
.frame_params = videotoolbox_frame_params,
|
||
.init = videotoolbox_common_init,
|
||
.uninit = videotoolbox_uninit,
|
||
.priv_data_size = sizeof(VTContext),
|
||
};
|
||
|
||
AVVideotoolboxContext *av_videotoolbox_alloc_context(void)
|
||
{
|
||
AVVideotoolboxContext *ret = av_mallocz(sizeof(*ret));
|
||
|
||
if (ret) {
|
||
ret->output_callback = videotoolbox_decoder_callback;
|
||
ret->cv_pix_fmt_type = kCVPixelFormatType_420YpCbCr8BiPlanarVideoRange;
|
||
}
|
||
|
||
return ret;
|
||
}
|
||
|
||
int av_videotoolbox_default_init(AVCodecContext *avctx)
|
||
{
|
||
return av_videotoolbox_default_init2(avctx, NULL);
|
||
}
|
||
|
||
int av_videotoolbox_default_init2(AVCodecContext *avctx, AVVideotoolboxContext *vtctx)
|
||
{
|
||
avctx->hwaccel_context = vtctx ?: av_videotoolbox_alloc_context();
|
||
if (!avctx->hwaccel_context)
|
||
return AVERROR(ENOMEM);
|
||
return videotoolbox_start(avctx);
|
||
}
|
||
|
||
void av_videotoolbox_default_free(AVCodecContext *avctx)
|
||
{
|
||
|
||
videotoolbox_stop(avctx);
|
||
av_freep(&avctx->hwaccel_context);
|
||
}
|
||
#endif /* CONFIG_VIDEOTOOLBOX */
|