mirror of https://git.ffmpeg.org/ffmpeg.git
271 lines
9.4 KiB
C
271 lines
9.4 KiB
C
/*
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* Copyright (c) 2023 Zhao Zhili <zhilizhao@tencent.com>
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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 <VideoToolbox/VideoToolbox.h>
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#include "libavutil/hwcontext.h"
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#include "libavutil/hwcontext_videotoolbox.h"
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#include "libavutil/opt.h"
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#include "libavutil/pixdesc.h"
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#include "internal.h"
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#include "scale_eval.h"
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#include "video.h"
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typedef struct ScaleVtContext {
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AVClass *class;
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VTPixelTransferSessionRef transfer;
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int output_width;
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int output_height;
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char *w_expr;
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char *h_expr;
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enum AVColorPrimaries colour_primaries;
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enum AVColorTransferCharacteristic colour_transfer;
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enum AVColorSpace colour_matrix;
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char *colour_primaries_string;
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char *colour_transfer_string;
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char *colour_matrix_string;
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} ScaleVtContext;
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static av_cold int scale_vt_init(AVFilterContext *avctx)
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{
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ScaleVtContext *s = avctx->priv;
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int ret;
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CFStringRef value;
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ret = VTPixelTransferSessionCreate(kCFAllocatorDefault, &s->transfer);
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if (ret != noErr) {
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av_log(avctx, AV_LOG_ERROR, "transfer session create failed, %d\n", ret);
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return AVERROR_EXTERNAL;
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}
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#define STRING_OPTION(var_name, func_name, default_value) \
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do { \
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if (s->var_name##_string) { \
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int var = av_##func_name##_from_name(s->var_name##_string); \
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if (var < 0) { \
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av_log(avctx, AV_LOG_ERROR, "Invalid %s.\n", #var_name); \
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return AVERROR(EINVAL); \
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} \
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s->var_name = var; \
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} else { \
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s->var_name = default_value; \
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} \
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} while (0)
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STRING_OPTION(colour_primaries, color_primaries, AVCOL_PRI_UNSPECIFIED);
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STRING_OPTION(colour_transfer, color_transfer, AVCOL_TRC_UNSPECIFIED);
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STRING_OPTION(colour_matrix, color_space, AVCOL_SPC_UNSPECIFIED);
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if (s->colour_primaries != AVCOL_PRI_UNSPECIFIED) {
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value = av_map_videotoolbox_color_primaries_from_av(s->colour_primaries);
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if (!value) {
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av_log(avctx, AV_LOG_ERROR,
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"Doesn't support converting to colour primaries %s\n",
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s->colour_primaries_string);
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return AVERROR(ENOTSUP);
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}
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VTSessionSetProperty(s->transfer, kVTPixelTransferPropertyKey_DestinationColorPrimaries, value);
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}
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if (s->colour_transfer != AVCOL_TRC_UNSPECIFIED) {
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value = av_map_videotoolbox_color_trc_from_av(s->colour_transfer);
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if (!value) {
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av_log(avctx, AV_LOG_ERROR,
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"Doesn't support converting to trc %s\n",
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s->colour_transfer_string);
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return AVERROR(ENOTSUP);
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}
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VTSessionSetProperty(s->transfer, kVTPixelTransferPropertyKey_DestinationTransferFunction, value);
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}
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if (s->colour_matrix != AVCOL_SPC_UNSPECIFIED) {
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value = av_map_videotoolbox_color_matrix_from_av(s->colour_matrix);
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if (!value) {
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av_log(avctx, AV_LOG_ERROR,
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"Doesn't support converting to colorspace %s\n",
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s->colour_matrix_string);
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return AVERROR(ENOTSUP);
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}
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VTSessionSetProperty(s->transfer, kVTPixelTransferPropertyKey_DestinationYCbCrMatrix, value);
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}
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return 0;
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}
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static av_cold void scale_vt_uninit(AVFilterContext *avctx)
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{
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ScaleVtContext *s = avctx->priv;
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if (s->transfer) {
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VTPixelTransferSessionInvalidate(s->transfer);
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CFRelease(s->transfer);
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s->transfer = NULL;
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}
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}
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static int scale_vt_filter_frame(AVFilterLink *link, AVFrame *in)
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{
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int ret;
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AVFilterContext *ctx = link->dst;
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ScaleVtContext *s = ctx->priv;
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AVFilterLink *outlink = ctx->outputs[0];
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CVPixelBufferRef src;
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CVPixelBufferRef dst;
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AVFrame *out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
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if (!out) {
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ret = AVERROR(ENOMEM);
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goto fail;
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}
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ret = av_frame_copy_props(out, in);
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if (ret < 0)
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goto fail;
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av_reduce(&out->sample_aspect_ratio.num, &out->sample_aspect_ratio.den,
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(int64_t)in->sample_aspect_ratio.num * outlink->h * link->w,
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(int64_t)in->sample_aspect_ratio.den * outlink->w * link->h,
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INT_MAX);
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if (s->colour_primaries != AVCOL_PRI_UNSPECIFIED)
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out->color_primaries = s->colour_primaries;
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if (s->colour_transfer != AVCOL_TRC_UNSPECIFIED)
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out->color_trc = s->colour_transfer;
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if (s->colour_matrix != AVCOL_SPC_UNSPECIFIED)
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out->colorspace = s->colour_matrix;
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src = (CVPixelBufferRef)in->data[3];
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dst = (CVPixelBufferRef)out->data[3];
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ret = VTPixelTransferSessionTransferImage(s->transfer, src, dst);
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if (ret != noErr) {
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av_log(ctx, AV_LOG_ERROR, "transfer image failed, %d\n", ret);
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ret = AVERROR_EXTERNAL;
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goto fail;
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}
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av_frame_free(&in);
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return ff_filter_frame(outlink, out);
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fail:
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av_frame_free(&in);
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av_frame_free(&out);
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return ret;
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}
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static int scale_vt_config_output(AVFilterLink *outlink)
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{
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int err;
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AVFilterContext *avctx = outlink->src;
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ScaleVtContext *s = avctx->priv;
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AVFilterLink *inlink = outlink->src->inputs[0];
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AVHWFramesContext *hw_frame_ctx_in;
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AVHWFramesContext *hw_frame_ctx_out;
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err = ff_scale_eval_dimensions(s, s->w_expr, s->h_expr, inlink, outlink,
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&s->output_width,
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&s->output_height);
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if (err < 0)
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return err;
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outlink->w = s->output_width;
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outlink->h = s->output_height;
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if (inlink->sample_aspect_ratio.num) {
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AVRational r = {outlink->h * inlink->w, outlink->w * inlink->h};
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outlink->sample_aspect_ratio = av_mul_q(r, inlink->sample_aspect_ratio);
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} else {
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outlink->sample_aspect_ratio = inlink->sample_aspect_ratio;
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}
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hw_frame_ctx_in = (AVHWFramesContext *)inlink->hw_frames_ctx->data;
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av_buffer_unref(&outlink->hw_frames_ctx);
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outlink->hw_frames_ctx = av_hwframe_ctx_alloc(hw_frame_ctx_in->device_ref);
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hw_frame_ctx_out = (AVHWFramesContext *)outlink->hw_frames_ctx->data;
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hw_frame_ctx_out->format = AV_PIX_FMT_VIDEOTOOLBOX;
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hw_frame_ctx_out->sw_format = hw_frame_ctx_in->sw_format;
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hw_frame_ctx_out->width = outlink->w;
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hw_frame_ctx_out->height = outlink->h;
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err = ff_filter_init_hw_frames(avctx, outlink, 1);
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if (err < 0)
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return err;
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err = av_hwframe_ctx_init(outlink->hw_frames_ctx);
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if (err < 0) {
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av_log(avctx, AV_LOG_ERROR,
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"Failed to init videotoolbox frame context, %s\n",
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av_err2str(err));
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return err;
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}
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return 0;
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}
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#define OFFSET(x) offsetof(ScaleVtContext, x)
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#define FLAGS (AV_OPT_FLAG_FILTERING_PARAM | AV_OPT_FLAG_VIDEO_PARAM)
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static const AVOption scale_vt_options[] = {
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{ "w", "Output video width",
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OFFSET(w_expr), AV_OPT_TYPE_STRING, {.str = "iw"}, .flags = FLAGS },
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{ "h", "Output video height",
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OFFSET(h_expr), AV_OPT_TYPE_STRING, {.str = "ih"}, .flags = FLAGS },
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{ "color_matrix", "Output colour matrix coefficient set",
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OFFSET(colour_matrix_string), AV_OPT_TYPE_STRING, { .str = NULL }, .flags = FLAGS },
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{ "color_primaries", "Output colour primaries",
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OFFSET(colour_primaries_string), AV_OPT_TYPE_STRING, { .str = NULL }, .flags = FLAGS },
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{ "color_transfer", "Output colour transfer characteristics",
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OFFSET(colour_transfer_string), AV_OPT_TYPE_STRING, { .str = NULL }, .flags = FLAGS },
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{ NULL },
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};
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AVFILTER_DEFINE_CLASS(scale_vt);
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static const AVFilterPad scale_vt_inputs[] = {
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{
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.name = "default",
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.type = AVMEDIA_TYPE_VIDEO,
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.filter_frame = &scale_vt_filter_frame,
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},
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};
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static const AVFilterPad scale_vt_outputs[] = {
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{
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.name = "default",
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.type = AVMEDIA_TYPE_VIDEO,
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.config_props = &scale_vt_config_output,
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},
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};
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const AVFilter ff_vf_scale_vt = {
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.name = "scale_vt",
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.description = NULL_IF_CONFIG_SMALL("Scale Videotoolbox frames"),
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.priv_size = sizeof(ScaleVtContext),
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.init = scale_vt_init,
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.uninit = scale_vt_uninit,
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FILTER_INPUTS(scale_vt_inputs),
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FILTER_OUTPUTS(scale_vt_outputs),
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FILTER_SINGLE_PIXFMT(AV_PIX_FMT_VIDEOTOOLBOX),
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.priv_class = &scale_vt_class,
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.flags = AVFILTER_FLAG_HWDEVICE,
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.flags_internal = FF_FILTER_FLAG_HWFRAME_AWARE,
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};
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