mirror of
https://git.videolan.org/git/ffmpeg.git
synced 2024-08-25 19:01:51 +02:00
421 lines
14 KiB
C
421 lines
14 KiB
C
/*
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* Copyright (c) 2016 Paul B Mahol
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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 "libavutil/imgutils.h"
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#include "libavutil/pixdesc.h"
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#include "libavutil/opt.h"
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#include "avfilter.h"
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#include "formats.h"
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#include "framesync.h"
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#include "internal.h"
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#include "video.h"
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typedef struct PreMultiplyContext {
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const AVClass *class;
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int width[4], height[4];
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int linesize[4];
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int nb_planes;
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int planes;
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int half, depth, offset;
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FFFrameSync fs;
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void (*premultiply[4])(const uint8_t *msrc, const uint8_t *asrc,
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uint8_t *dst,
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ptrdiff_t mlinesize, ptrdiff_t alinesize,
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ptrdiff_t dlinesize,
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int w, int h,
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int half, int shift, int offset);
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} PreMultiplyContext;
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#define OFFSET(x) offsetof(PreMultiplyContext, x)
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#define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
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static const AVOption premultiply_options[] = {
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{ "planes", "set planes", OFFSET(planes), AV_OPT_TYPE_INT, {.i64=0xF}, 0, 0xF, FLAGS },
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{ NULL }
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};
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AVFILTER_DEFINE_CLASS(premultiply);
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static int query_formats(AVFilterContext *ctx)
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{
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static const enum AVPixelFormat pix_fmts[] = {
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AV_PIX_FMT_YUV444P, AV_PIX_FMT_YUVJ444P,
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AV_PIX_FMT_YUV444P9, AV_PIX_FMT_YUV444P10,
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AV_PIX_FMT_YUV444P12, AV_PIX_FMT_YUV444P14,
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AV_PIX_FMT_YUV444P16,
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AV_PIX_FMT_GBRP, AV_PIX_FMT_GBRP9, AV_PIX_FMT_GBRP10,
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AV_PIX_FMT_GBRP12, AV_PIX_FMT_GBRP14, AV_PIX_FMT_GBRP16,
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AV_PIX_FMT_GRAY8, AV_PIX_FMT_GRAY10, AV_PIX_FMT_GRAY12, AV_PIX_FMT_GRAY16,
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AV_PIX_FMT_NONE
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};
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return ff_set_common_formats(ctx, ff_make_format_list(pix_fmts));
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}
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static void premultiply8(const uint8_t *msrc, const uint8_t *asrc,
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uint8_t *dst,
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ptrdiff_t mlinesize, ptrdiff_t alinesize,
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ptrdiff_t dlinesize,
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int w, int h,
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int half, int shift, int offset)
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{
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int x, y;
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for (y = 0; y < h; y++) {
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for (x = 0; x < w; x++) {
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dst[x] = ((msrc[x] * (((asrc[x] >> 1) & 1) + asrc[x])) + 128) >> 8;
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}
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dst += dlinesize;
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msrc += mlinesize;
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asrc += alinesize;
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}
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}
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static void premultiply8yuv(const uint8_t *msrc, const uint8_t *asrc,
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uint8_t *dst,
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ptrdiff_t mlinesize, ptrdiff_t alinesize,
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ptrdiff_t dlinesize,
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int w, int h,
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int half, int shift, int offset)
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{
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int x, y;
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for (y = 0; y < h; y++) {
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for (x = 0; x < w; x++) {
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dst[x] = ((((msrc[x] - 128) * (((asrc[x] >> 1) & 1) + asrc[x]))) >> 8) + 128;
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}
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dst += dlinesize;
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msrc += mlinesize;
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asrc += alinesize;
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}
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}
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static void premultiply8offset(const uint8_t *msrc, const uint8_t *asrc,
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uint8_t *dst,
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ptrdiff_t mlinesize, ptrdiff_t alinesize,
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ptrdiff_t dlinesize,
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int w, int h,
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int half, int shift, int offset)
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{
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int x, y;
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for (y = 0; y < h; y++) {
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for (x = 0; x < w; x++) {
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dst[x] = ((((msrc[x] - offset) * (((asrc[x] >> 1) & 1) + asrc[x])) + 128) >> 8) + offset;
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}
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dst += dlinesize;
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msrc += mlinesize;
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asrc += alinesize;
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}
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}
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static void premultiply16(const uint8_t *mmsrc, const uint8_t *aasrc,
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uint8_t *ddst,
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ptrdiff_t mlinesize, ptrdiff_t alinesize,
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ptrdiff_t dlinesize,
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int w, int h,
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int half, int shift, int offset)
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{
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const uint16_t *msrc = (const uint16_t *)mmsrc;
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const uint16_t *asrc = (const uint16_t *)aasrc;
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uint16_t *dst = (uint16_t *)ddst;
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int x, y;
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for (y = 0; y < h; y++) {
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for (x = 0; x < w; x++) {
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dst[x] = ((msrc[x] * (((asrc[x] >> 1) & 1) + asrc[x])) + half) >> shift;
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}
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dst += dlinesize / 2;
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msrc += mlinesize / 2;
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asrc += alinesize / 2;
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}
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}
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static void premultiply16yuv(const uint8_t *mmsrc, const uint8_t *aasrc,
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uint8_t *ddst,
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ptrdiff_t mlinesize, ptrdiff_t alinesize,
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ptrdiff_t dlinesize,
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int w, int h,
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int half, int shift, int offset)
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{
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const uint16_t *msrc = (const uint16_t *)mmsrc;
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const uint16_t *asrc = (const uint16_t *)aasrc;
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uint16_t *dst = (uint16_t *)ddst;
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int x, y;
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for (y = 0; y < h; y++) {
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for (x = 0; x < w; x++) {
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dst[x] = ((((msrc[x] - half) * (((asrc[x] >> 1) & 1) + asrc[x]))) >> shift) + half;
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}
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dst += dlinesize / 2;
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msrc += mlinesize / 2;
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asrc += alinesize / 2;
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}
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}
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static void premultiply16offset(const uint8_t *mmsrc, const uint8_t *aasrc,
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uint8_t *ddst,
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ptrdiff_t mlinesize, ptrdiff_t alinesize,
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ptrdiff_t dlinesize,
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int w, int h,
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int half, int shift, int offset)
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{
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const uint16_t *msrc = (const uint16_t *)mmsrc;
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const uint16_t *asrc = (const uint16_t *)aasrc;
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uint16_t *dst = (uint16_t *)ddst;
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int x, y;
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for (y = 0; y < h; y++) {
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for (x = 0; x < w; x++) {
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dst[x] = ((((msrc[x] - offset) * (((asrc[x] >> 1) & 1) + asrc[x])) + half) >> shift) + offset;
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}
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dst += dlinesize / 2;
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msrc += mlinesize / 2;
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asrc += alinesize / 2;
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}
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}
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static int process_frame(FFFrameSync *fs)
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{
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AVFilterContext *ctx = fs->parent;
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PreMultiplyContext *s = fs->opaque;
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AVFilterLink *outlink = ctx->outputs[0];
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AVFrame *out, *base, *alpha;
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int ret;
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if ((ret = ff_framesync_get_frame(&s->fs, 0, &base, 0)) < 0 ||
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(ret = ff_framesync_get_frame(&s->fs, 1, &alpha, 0)) < 0)
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return ret;
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if (ctx->is_disabled) {
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out = av_frame_clone(base);
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if (!out)
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return AVERROR(ENOMEM);
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} else {
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int p, full, limited;
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out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
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if (!out)
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return AVERROR(ENOMEM);
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av_frame_copy_props(out, base);
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full = base->color_range == AVCOL_RANGE_JPEG;
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limited = base->color_range == AVCOL_RANGE_MPEG;
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switch (outlink->format) {
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case AV_PIX_FMT_YUV444P:
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s->premultiply[0] = full ? premultiply8 : premultiply8offset;
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s->premultiply[1] = premultiply8yuv;
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s->premultiply[2] = premultiply8yuv;
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break;
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case AV_PIX_FMT_YUVJ444P:
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s->premultiply[0] = premultiply8;
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s->premultiply[1] = premultiply8yuv;
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s->premultiply[2] = premultiply8yuv;
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break;
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case AV_PIX_FMT_GBRP:
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s->premultiply[0] = limited ? premultiply8offset : premultiply8;
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s->premultiply[1] = limited ? premultiply8offset : premultiply8;
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s->premultiply[2] = limited ? premultiply8offset : premultiply8;
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break;
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case AV_PIX_FMT_YUV444P9:
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case AV_PIX_FMT_YUV444P10:
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case AV_PIX_FMT_YUV444P12:
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case AV_PIX_FMT_YUV444P14:
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case AV_PIX_FMT_YUV444P16:
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s->premultiply[0] = full ? premultiply16 : premultiply16offset;
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s->premultiply[1] = premultiply16yuv;
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s->premultiply[2] = premultiply16yuv;
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break;
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case AV_PIX_FMT_GBRP9:
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case AV_PIX_FMT_GBRP10:
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case AV_PIX_FMT_GBRP12:
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case AV_PIX_FMT_GBRP14:
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case AV_PIX_FMT_GBRP16:
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s->premultiply[0] = limited ? premultiply16offset : premultiply16;
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s->premultiply[1] = limited ? premultiply16offset : premultiply16;
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s->premultiply[2] = limited ? premultiply16offset : premultiply16;
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break;
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case AV_PIX_FMT_GRAY8:
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s->premultiply[0] = limited ? premultiply8offset : premultiply8;
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break;
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case AV_PIX_FMT_GRAY10:
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case AV_PIX_FMT_GRAY12:
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case AV_PIX_FMT_GRAY16:
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s->premultiply[0] = limited ? premultiply16offset : premultiply16;
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break;
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}
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for (p = 0; p < s->nb_planes; p++) {
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if (!((1 << p) & s->planes)) {
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av_image_copy_plane(out->data[p], out->linesize[p], base->data[p], base->linesize[p],
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s->linesize[p], s->height[p]);
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continue;
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}
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s->premultiply[p](base->data[p], alpha->data[0],
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out->data[p],
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base->linesize[p], alpha->linesize[0],
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out->linesize[p],
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s->width[p], s->height[p],
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s->half, s->depth, s->offset);
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}
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}
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out->pts = av_rescale_q(base->pts, s->fs.time_base, outlink->time_base);
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return ff_filter_frame(outlink, out);
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}
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static int config_input(AVFilterLink *inlink)
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{
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AVFilterContext *ctx = inlink->dst;
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PreMultiplyContext *s = ctx->priv;
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const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format);
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int vsub, hsub, ret;
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s->nb_planes = av_pix_fmt_count_planes(inlink->format);
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if ((ret = av_image_fill_linesizes(s->linesize, inlink->format, inlink->w)) < 0)
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return ret;
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hsub = desc->log2_chroma_w;
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vsub = desc->log2_chroma_h;
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s->height[1] = s->height[2] = AV_CEIL_RSHIFT(inlink->h, vsub);
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s->height[0] = s->height[3] = inlink->h;
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s->width[1] = s->width[2] = AV_CEIL_RSHIFT(inlink->w, hsub);
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s->width[0] = s->width[3] = inlink->w;
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s->depth = desc->comp[0].depth;
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s->half = (1 << s->depth) / 2;
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s->offset = 16 << (s->depth - 8);
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return 0;
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}
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static int config_output(AVFilterLink *outlink)
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{
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AVFilterContext *ctx = outlink->src;
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PreMultiplyContext *s = ctx->priv;
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AVFilterLink *base = ctx->inputs[0];
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AVFilterLink *alpha = ctx->inputs[1];
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FFFrameSyncIn *in;
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int ret;
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if (base->format != alpha->format) {
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av_log(ctx, AV_LOG_ERROR, "inputs must be of same pixel format\n");
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return AVERROR(EINVAL);
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}
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if (base->w != alpha->w ||
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base->h != alpha->h) {
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av_log(ctx, AV_LOG_ERROR, "First input link %s parameters "
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"(size %dx%d) do not match the corresponding "
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"second input link %s parameters (%dx%d) ",
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ctx->input_pads[0].name, base->w, base->h,
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ctx->input_pads[1].name, alpha->w, alpha->h);
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return AVERROR(EINVAL);
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}
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outlink->w = base->w;
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outlink->h = base->h;
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outlink->time_base = base->time_base;
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outlink->sample_aspect_ratio = base->sample_aspect_ratio;
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outlink->frame_rate = base->frame_rate;
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if ((ret = ff_framesync_init(&s->fs, ctx, 2)) < 0)
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return ret;
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in = s->fs.in;
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in[0].time_base = base->time_base;
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in[1].time_base = alpha->time_base;
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in[0].sync = 1;
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in[0].before = EXT_STOP;
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in[0].after = EXT_INFINITY;
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in[1].sync = 1;
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in[1].before = EXT_STOP;
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in[1].after = EXT_INFINITY;
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s->fs.opaque = s;
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s->fs.on_event = process_frame;
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return ff_framesync_configure(&s->fs);
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}
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static int filter_frame(AVFilterLink *inlink, AVFrame *buf)
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{
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PreMultiplyContext *s = inlink->dst->priv;
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return ff_framesync_filter_frame(&s->fs, inlink, buf);
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}
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static int request_frame(AVFilterLink *outlink)
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{
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PreMultiplyContext *s = outlink->src->priv;
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return ff_framesync_request_frame(&s->fs, outlink);
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}
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static av_cold void uninit(AVFilterContext *ctx)
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{
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PreMultiplyContext *s = ctx->priv;
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ff_framesync_uninit(&s->fs);
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}
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static const AVFilterPad premultiply_inputs[] = {
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{
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.name = "main",
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.type = AVMEDIA_TYPE_VIDEO,
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.filter_frame = filter_frame,
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.config_props = config_input,
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},
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{
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.name = "alpha",
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.type = AVMEDIA_TYPE_VIDEO,
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.filter_frame = filter_frame,
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},
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{ NULL }
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};
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static const AVFilterPad premultiply_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 = config_output,
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.request_frame = request_frame,
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},
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{ NULL }
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};
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AVFilter ff_vf_premultiply = {
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.name = "premultiply",
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.description = NULL_IF_CONFIG_SMALL("PreMultiply first stream with first plane of second stream."),
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.priv_size = sizeof(PreMultiplyContext),
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.uninit = uninit,
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.query_formats = query_formats,
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.inputs = premultiply_inputs,
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.outputs = premultiply_outputs,
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.priv_class = &premultiply_class,
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.flags = AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL,
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};
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