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https://github.com/FFmpeg/FFmpeg.git
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790f793844
There are lots of files that don't need it: The number of object files that actually need it went down from 2011 to 884 here. Keep it for external users in order to not cause breakages. Also improve the other headers a bit while just at it. Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
144 lines
4.5 KiB
C
144 lines
4.5 KiB
C
/*
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* Videotoolbox hardware acceleration for VP9
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*
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* copyright (c) 2021 rcombs
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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 "libavutil/mem.h"
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#include "vt_internal.h"
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#include "libavutil/avassert.h"
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#include "libavutil/avutil.h"
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#include "libavutil/frame.h"
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#include "libavutil/hwcontext.h"
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#include "libavutil/intreadwrite.h"
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#include "libavutil/pixdesc.h"
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#include "decode.h"
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#include "hwaccel_internal.h"
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#include "internal.h"
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#include "vp9shared.h"
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enum VPX_CHROMA_SUBSAMPLING
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{
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VPX_SUBSAMPLING_420_VERTICAL = 0,
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VPX_SUBSAMPLING_420_COLLOCATED_WITH_LUMA = 1,
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VPX_SUBSAMPLING_422 = 2,
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VPX_SUBSAMPLING_444 = 3,
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};
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static int get_vpx_chroma_subsampling(enum AVPixelFormat pixel_format,
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enum AVChromaLocation chroma_location)
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{
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int chroma_w, chroma_h;
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if (av_pix_fmt_get_chroma_sub_sample(pixel_format, &chroma_w, &chroma_h) == 0) {
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if (chroma_w == 1 && chroma_h == 1) {
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return (chroma_location == AVCHROMA_LOC_LEFT)
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? VPX_SUBSAMPLING_420_VERTICAL
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: VPX_SUBSAMPLING_420_COLLOCATED_WITH_LUMA;
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} else if (chroma_w == 1 && chroma_h == 0) {
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return VPX_SUBSAMPLING_422;
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} else if (chroma_w == 0 && chroma_h == 0) {
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return VPX_SUBSAMPLING_444;
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}
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}
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return -1;
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}
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CFDataRef ff_videotoolbox_vpcc_extradata_create(AVCodecContext *avctx)
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{
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const VP9SharedContext *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;
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uint8_t *vt_extradata;
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int subsampling = get_vpx_chroma_subsampling(avctx->sw_pix_fmt, avctx->chroma_sample_location);
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vt_extradata_size = 1 + 3 + 6 + 2;
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vt_extradata = av_malloc(vt_extradata_size);
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if (subsampling < 0)
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return NULL;
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if (!vt_extradata)
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return NULL;
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p = vt_extradata;
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*p++ = 1; /* version */
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AV_WB24(p + 1, 0); /* flags */
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p += 3;
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*p++ = h->h.profile;
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*p++ = avctx->level;
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*p++ = (h->h.bpp << 4) | (subsampling << 1) | (avctx->color_range == AVCOL_RANGE_JPEG);
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*p++ = avctx->color_primaries;
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*p++ = avctx->color_trc;
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*p++ = avctx->colorspace;
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AV_WB16(p + 0, 0);
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p += 2;
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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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static int videotoolbox_vp9_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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return 0;
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}
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static int videotoolbox_vp9_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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return ff_videotoolbox_buffer_copy(vtctx, buffer, size);
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}
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static int videotoolbox_vp9_end_frame(AVCodecContext *avctx)
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{
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const VP9SharedContext *h = avctx->priv_data;
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AVFrame *frame = h->frames[CUR_FRAME].tf.f;
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return ff_videotoolbox_common_end_frame(avctx, frame);
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}
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const FFHWAccel ff_vp9_videotoolbox_hwaccel = {
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.p.name = "vp9_videotoolbox",
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.p.type = AVMEDIA_TYPE_VIDEO,
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.p.id = AV_CODEC_ID_VP9,
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.p.pix_fmt = AV_PIX_FMT_VIDEOTOOLBOX,
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.alloc_frame = ff_videotoolbox_alloc_frame,
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.start_frame = videotoolbox_vp9_start_frame,
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.decode_slice = videotoolbox_vp9_decode_slice,
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.end_frame = videotoolbox_vp9_end_frame,
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.frame_params = ff_videotoolbox_frame_params,
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.init = ff_videotoolbox_common_init,
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.uninit = ff_videotoolbox_uninit,
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.priv_data_size = sizeof(VTContext),
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};
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