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https://github.com/FFmpeg/FFmpeg.git
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9747219958
If videotoolbox_common_end_frame failed, then the AVFrame was returned to the API user with the dummy buffer (in AVFrame.buf[0]) still set, and the decode call indicating success. These "half-set" AVFrames with dummy buffer are a videotoolbox specific hack, because the decoder requires an allocated AVFrame for its internal logic. Videotoolbox on the other hand allocates its frame itself internally, and outputs it only on end_frame. At this point, the dummy buffer is replaced with the real frame (unless decoding fails).
702 lines
24 KiB
C
702 lines
24 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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#if CONFIG_VIDEOTOOLBOX
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# include "videotoolbox.h"
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#else
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# include "vda.h"
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#endif
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#include "vda_vt_internal.h"
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#include "libavutil/avutil.h"
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#include "bytestream.h"
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#include "h264.h"
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#include "mpegvideo.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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#define VIDEOTOOLBOX_ESDS_EXTRADATA_PADDING 12
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static void videotoolbox_buffer_release(void *opaque, uint8_t *data)
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{
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CVPixelBufferRef cv_buffer = (CVImageBufferRef)data;
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CVPixelBufferRelease(cv_buffer);
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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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int ff_videotoolbox_alloc_frame(AVCodecContext *avctx, AVFrame *frame)
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{
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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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frame->buf[0] = av_buffer_alloc(1);
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if (!frame->buf[0])
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return AVERROR(ENOMEM);
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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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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 + 3 + h->sps.data_size + 4 + h->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->sps.data[0]); /* profile */
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AV_W8(p + 2, h->sps.data[1]); /* profile compat */
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AV_W8(p + 3, h->sps.data[2]); /* 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->sps.data_size + 1);
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AV_W8(p + 8, NAL_SPS | (3 << 5)); // NAL unit header
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memcpy(p + 9, h->sps.data, h->sps.data_size);
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p += 9 + h->sps.data_size;
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AV_W8(p + 0, 1); /* number of pps */
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AV_WB16(p + 1, h->pps.data_size + 1);
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AV_W8(p + 3, NAL_PPS | (3 << 5)); // NAL unit header
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memcpy(p + 4, h->pps.data, h->pps.data_size);
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p += 4 + h->pps.data_size;
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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_buffer_create(VTContext *vtctx, AVFrame *frame)
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{
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av_buffer_unref(&frame->buf[0]);
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frame->buf[0] = av_buffer_create((uint8_t*)vtctx->frame,
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sizeof(vtctx->frame),
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videotoolbox_buffer_release,
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NULL,
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AV_BUFFER_FLAG_READONLY);
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if (!frame->buf[0]) {
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return AVERROR(ENOMEM);
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}
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frame->data[3] = (uint8_t*)vtctx->frame;
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vtctx->frame = NULL;
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return 0;
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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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vtctx->bitstream_size = 0;
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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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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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VTContext *vtctx = avctx->internal->hwaccel_priv_data;
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H264Context *h = avctx->priv_data;
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void *tmp;
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if (h->is_avc == 1)
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return 0;
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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_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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#if CONFIG_VIDEOTOOLBOX
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static void videotoolbox_write_mp4_descr_length(PutByteContext *pb, int length)
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{
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int i;
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uint8_t b;
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for (i = 3; i >= 0; i--) {
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b = (length >> (i * 7)) & 0x7F;
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if (i != 0)
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b |= 0x80;
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bytestream2_put_byteu(pb, b);
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}
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}
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static CFDataRef videotoolbox_esds_extradata_create(AVCodecContext *avctx)
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{
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CFDataRef data;
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uint8_t *rw_extradata;
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PutByteContext pb;
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int full_size = 3 + 5 + 13 + 5 + avctx->extradata_size + 3;
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// ES_DescrTag data + DecoderConfigDescrTag + data + DecSpecificInfoTag + size + SLConfigDescriptor
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int config_size = 13 + 5 + avctx->extradata_size;
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int s;
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if (!(rw_extradata = av_mallocz(full_size + VIDEOTOOLBOX_ESDS_EXTRADATA_PADDING)))
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return NULL;
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bytestream2_init_writer(&pb, rw_extradata, full_size + VIDEOTOOLBOX_ESDS_EXTRADATA_PADDING);
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bytestream2_put_byteu(&pb, 0); // version
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bytestream2_put_ne24(&pb, 0); // flags
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// elementary stream descriptor
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bytestream2_put_byteu(&pb, 0x03); // ES_DescrTag
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videotoolbox_write_mp4_descr_length(&pb, full_size);
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bytestream2_put_ne16(&pb, 0); // esid
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bytestream2_put_byteu(&pb, 0); // stream priority (0-32)
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// decoder configuration descriptor
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bytestream2_put_byteu(&pb, 0x04); // DecoderConfigDescrTag
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videotoolbox_write_mp4_descr_length(&pb, config_size);
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bytestream2_put_byteu(&pb, 32); // object type indication. 32 = AV_CODEC_ID_MPEG4
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bytestream2_put_byteu(&pb, 0x11); // stream type
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bytestream2_put_ne24(&pb, 0); // buffer size
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bytestream2_put_ne32(&pb, 0); // max bitrate
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bytestream2_put_ne32(&pb, 0); // avg bitrate
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// decoder specific descriptor
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bytestream2_put_byteu(&pb, 0x05); ///< DecSpecificInfoTag
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videotoolbox_write_mp4_descr_length(&pb, avctx->extradata_size);
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bytestream2_put_buffer(&pb, avctx->extradata, avctx->extradata_size);
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// SLConfigDescriptor
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bytestream2_put_byteu(&pb, 0x06); // SLConfigDescrTag
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bytestream2_put_byteu(&pb, 0x01); // length
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bytestream2_put_byteu(&pb, 0x02); //
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s = bytestream2_size_p(&pb);
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data = CFDataCreate(kCFAllocatorDefault, rw_extradata, s);
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av_freep(&rw_extradata);
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return data;
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}
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static CMSampleBufferRef videotoolbox_sample_buffer_create(CMFormatDescriptionRef fmt_desc,
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void *buffer,
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int size)
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{
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OSStatus status;
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CMBlockBufferRef block_buf;
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CMSampleBufferRef sample_buf;
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block_buf = NULL;
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sample_buf = NULL;
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status = CMBlockBufferCreateWithMemoryBlock(kCFAllocatorDefault,// structureAllocator
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buffer, // memoryBlock
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size, // blockLength
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kCFAllocatorNull, // blockAllocator
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NULL, // customBlockSource
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0, // offsetToData
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size, // dataLength
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0, // flags
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&block_buf);
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if (!status) {
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status = CMSampleBufferCreate(kCFAllocatorDefault, // allocator
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block_buf, // dataBuffer
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TRUE, // dataReady
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0, // makeDataReadyCallback
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0, // makeDataReadyRefcon
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fmt_desc, // formatDescription
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1, // numSamples
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0, // numSampleTimingEntries
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NULL, // sampleTimingArray
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0, // numSampleSizeEntries
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NULL, // sampleSizeArray
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&sample_buf);
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}
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if (block_buf)
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CFRelease(block_buf);
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return sample_buf;
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}
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static void videotoolbox_decoder_callback(void *opaque,
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void *sourceFrameRefCon,
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OSStatus status,
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VTDecodeInfoFlags flags,
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CVImageBufferRef image_buffer,
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CMTime pts,
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CMTime duration)
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{
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AVCodecContext *avctx = opaque;
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VTContext *vtctx = avctx->internal->hwaccel_priv_data;
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if (vtctx->frame) {
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CVPixelBufferRelease(vtctx->frame);
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vtctx->frame = NULL;
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}
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if (!image_buffer) {
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av_log(NULL, AV_LOG_DEBUG, "vt decoder cb: output image buffer is null\n");
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return;
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}
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vtctx->frame = CVPixelBufferRetain(image_buffer);
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}
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static OSStatus videotoolbox_session_decode_frame(AVCodecContext *avctx)
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{
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OSStatus status;
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CMSampleBufferRef sample_buf;
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AVVideotoolboxContext *videotoolbox = avctx->hwaccel_context;
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VTContext *vtctx = avctx->internal->hwaccel_priv_data;
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sample_buf = videotoolbox_sample_buffer_create(videotoolbox->cm_fmt_desc,
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vtctx->bitstream,
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vtctx->bitstream_size);
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if (!sample_buf)
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return -1;
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status = VTDecompressionSessionDecodeFrame(videotoolbox->session,
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sample_buf,
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0, // decodeFlags
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NULL, // sourceFrameRefCon
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0); // infoFlagsOut
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if (status == noErr)
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status = VTDecompressionSessionWaitForAsynchronousFrames(videotoolbox->session);
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CFRelease(sample_buf);
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return status;
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}
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static int videotoolbox_common_end_frame(AVCodecContext *avctx, AVFrame *frame)
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{
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int status;
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AVVideotoolboxContext *videotoolbox = avctx->hwaccel_context;
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VTContext *vtctx = avctx->internal->hwaccel_priv_data;
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av_buffer_unref(&frame->buf[0]);
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if (!videotoolbox->session || !vtctx->bitstream)
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return AVERROR_INVALIDDATA;
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status = videotoolbox_session_decode_frame(avctx);
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if (status) {
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av_log(avctx, AV_LOG_ERROR, "Failed to decode frame (%d)\n", status);
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return AVERROR_UNKNOWN;
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}
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if (!vtctx->frame)
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return AVERROR_UNKNOWN;
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return ff_videotoolbox_buffer_create(vtctx, frame);
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}
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static int videotoolbox_h264_end_frame(AVCodecContext *avctx)
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{
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H264Context *h = avctx->priv_data;
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AVFrame *frame = h->cur_pic_ptr->f;
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return videotoolbox_common_end_frame(avctx, frame);
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}
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static int videotoolbox_mpeg_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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return videotoolbox_buffer_copy(vtctx, buffer, size);
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}
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static int videotoolbox_mpeg_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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return 0;
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}
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static int videotoolbox_mpeg_end_frame(AVCodecContext *avctx)
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{
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MpegEncContext *s = avctx->priv_data;
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AVFrame *frame = s->current_picture_ptr->f;
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return videotoolbox_common_end_frame(avctx, frame);
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}
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static CFDictionaryRef videotoolbox_decoder_config_create(CMVideoCodecType codec_type,
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AVCodecContext *avctx)
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{
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CFMutableDictionaryRef config_info = CFDictionaryCreateMutable(kCFAllocatorDefault,
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1,
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&kCFTypeDictionaryKeyCallBacks,
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&kCFTypeDictionaryValueCallBacks);
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CFDictionarySetValue(config_info,
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kVTVideoDecoderSpecification_RequireHardwareAcceleratedVideoDecoder,
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kCFBooleanTrue);
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if (avctx->extradata_size) {
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CFMutableDictionaryRef avc_info;
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CFDataRef data = NULL;
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avc_info = CFDictionaryCreateMutable(kCFAllocatorDefault,
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1,
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&kCFTypeDictionaryKeyCallBacks,
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&kCFTypeDictionaryValueCallBacks);
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switch (codec_type) {
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case kCMVideoCodecType_MPEG4Video :
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data = videotoolbox_esds_extradata_create(avctx);
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if (data)
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CFDictionarySetValue(avc_info, CFSTR("esds"), data);
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break;
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case kCMVideoCodecType_H264 :
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data = ff_videotoolbox_avcc_extradata_create(avctx);
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if (data)
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CFDictionarySetValue(avc_info, CFSTR("avcC"), data);
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break;
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default:
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break;
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}
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CFDictionarySetValue(config_info,
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kCMFormatDescriptionExtension_SampleDescriptionExtensionAtoms,
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avc_info);
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if (data)
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CFRelease(data);
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CFRelease(avc_info);
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}
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return config_info;
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}
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static CFDictionaryRef videotoolbox_buffer_attributes_create(int width,
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int height,
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OSType pix_fmt)
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{
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CFMutableDictionaryRef buffer_attributes;
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CFMutableDictionaryRef io_surface_properties;
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CFNumberRef cv_pix_fmt;
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CFNumberRef w;
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CFNumberRef h;
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w = CFNumberCreate(kCFAllocatorDefault, kCFNumberSInt32Type, &width);
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h = CFNumberCreate(kCFAllocatorDefault, kCFNumberSInt32Type, &height);
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cv_pix_fmt = CFNumberCreate(kCFAllocatorDefault, kCFNumberSInt32Type, &pix_fmt);
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buffer_attributes = CFDictionaryCreateMutable(kCFAllocatorDefault,
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4,
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&kCFTypeDictionaryKeyCallBacks,
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&kCFTypeDictionaryValueCallBacks);
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io_surface_properties = CFDictionaryCreateMutable(kCFAllocatorDefault,
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0,
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&kCFTypeDictionaryKeyCallBacks,
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&kCFTypeDictionaryValueCallBacks);
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CFDictionarySetValue(buffer_attributes, kCVPixelBufferPixelFormatTypeKey, cv_pix_fmt);
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CFDictionarySetValue(buffer_attributes, kCVPixelBufferIOSurfacePropertiesKey, io_surface_properties);
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CFDictionarySetValue(buffer_attributes, kCVPixelBufferWidthKey, w);
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CFDictionarySetValue(buffer_attributes, kCVPixelBufferHeightKey, h);
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CFRelease(io_surface_properties);
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CFRelease(cv_pix_fmt);
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CFRelease(w);
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CFRelease(h);
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return buffer_attributes;
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}
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static CMVideoFormatDescriptionRef videotoolbox_format_desc_create(CMVideoCodecType codec_type,
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CFDictionaryRef decoder_spec,
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int width,
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int height)
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{
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CMFormatDescriptionRef cm_fmt_desc;
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OSStatus status;
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status = CMVideoFormatDescriptionCreate(kCFAllocatorDefault,
|
|
codec_type,
|
|
width,
|
|
height,
|
|
decoder_spec, // Dictionary of extension
|
|
&cm_fmt_desc);
|
|
|
|
if (status)
|
|
return NULL;
|
|
|
|
return cm_fmt_desc;
|
|
}
|
|
|
|
static int videotoolbox_default_init(AVCodecContext *avctx)
|
|
{
|
|
AVVideotoolboxContext *videotoolbox = avctx->hwaccel_context;
|
|
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_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);
|
|
|
|
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:
|
|
case kVTVideoDecoderUnsupportedDataFormatErr:
|
|
return AVERROR(ENOSYS);
|
|
case kVTVideoDecoderMalfunctionErr:
|
|
return AVERROR(EINVAL);
|
|
case kVTVideoDecoderBadDataErr :
|
|
return AVERROR_INVALIDDATA;
|
|
case 0:
|
|
return 0;
|
|
default:
|
|
return AVERROR_UNKNOWN;
|
|
}
|
|
}
|
|
|
|
static void videotoolbox_default_free(AVCodecContext *avctx)
|
|
{
|
|
AVVideotoolboxContext *videotoolbox = avctx->hwaccel_context;
|
|
|
|
if (videotoolbox) {
|
|
if (videotoolbox->cm_fmt_desc)
|
|
CFRelease(videotoolbox->cm_fmt_desc);
|
|
|
|
if (videotoolbox->session)
|
|
VTDecompressionSessionInvalidate(videotoolbox->session);
|
|
}
|
|
}
|
|
|
|
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,
|
|
.uninit = ff_videotoolbox_uninit,
|
|
.priv_data_size = sizeof(VTContext),
|
|
};
|
|
|
|
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,
|
|
.end_frame = videotoolbox_h264_end_frame,
|
|
.uninit = ff_videotoolbox_uninit,
|
|
.priv_data_size = sizeof(VTContext),
|
|
};
|
|
|
|
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,
|
|
.uninit = ff_videotoolbox_uninit,
|
|
.priv_data_size = sizeof(VTContext),
|
|
};
|
|
|
|
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,
|
|
.uninit = ff_videotoolbox_uninit,
|
|
.priv_data_size = sizeof(VTContext),
|
|
};
|
|
|
|
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,
|
|
.uninit = ff_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_default_init(avctx);
|
|
}
|
|
|
|
void av_videotoolbox_default_free(AVCodecContext *avctx)
|
|
{
|
|
|
|
videotoolbox_default_free(avctx);
|
|
av_freep(&avctx->hwaccel_context);
|
|
}
|
|
#endif /* CONFIG_VIDEOTOOLBOX */
|