FFmpeg/libavfilter/vf_premultiply.c
Michael Niedermayer 7d1b1b660b avfilter/vf_premultiply: remove redundant semicolons
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
2016-12-02 19:37:00 +01:00

410 lines
13 KiB
C

/*
* Copyright (c) 2016 Paul B Mahol
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "libavutil/imgutils.h"
#include "libavutil/pixdesc.h"
#include "libavutil/opt.h"
#include "avfilter.h"
#include "formats.h"
#include "framesync.h"
#include "internal.h"
#include "video.h"
typedef struct PreMultiplyContext {
const AVClass *class;
int width[4], height[4];
int nb_planes;
int planes;
int half, depth, offset;
FFFrameSync fs;
void (*premultiply[4])(const uint8_t *msrc, const uint8_t *asrc,
uint8_t *dst,
ptrdiff_t mlinesize, ptrdiff_t alinesize,
ptrdiff_t dlinesize,
int w, int h,
int half, int shift, int offset);
} PreMultiplyContext;
#define OFFSET(x) offsetof(PreMultiplyContext, x)
#define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
static const AVOption premultiply_options[] = {
{ NULL }
};
AVFILTER_DEFINE_CLASS(premultiply);
static int query_formats(AVFilterContext *ctx)
{
static const enum AVPixelFormat pix_fmts[] = {
AV_PIX_FMT_YUV444P, AV_PIX_FMT_YUVJ444P,
AV_PIX_FMT_YUV444P9, AV_PIX_FMT_YUV444P10,
AV_PIX_FMT_YUV444P12, AV_PIX_FMT_YUV444P14,
AV_PIX_FMT_YUV444P16,
AV_PIX_FMT_GBRP, AV_PIX_FMT_GBRP9, AV_PIX_FMT_GBRP10,
AV_PIX_FMT_GBRP12, AV_PIX_FMT_GBRP14, AV_PIX_FMT_GBRP16,
AV_PIX_FMT_GRAY8, AV_PIX_FMT_GRAY10, AV_PIX_FMT_GRAY12, AV_PIX_FMT_GRAY16,
AV_PIX_FMT_NONE
};
return ff_set_common_formats(ctx, ff_make_format_list(pix_fmts));
}
static void premultiply8(const uint8_t *msrc, const uint8_t *asrc,
uint8_t *dst,
ptrdiff_t mlinesize, ptrdiff_t alinesize,
ptrdiff_t dlinesize,
int w, int h,
int half, int shift, int offset)
{
int x, y;
for (y = 0; y < h; y++) {
for (x = 0; x < w; x++) {
dst[x] = ((msrc[x] * (((asrc[x] >> 1) & 1) + asrc[x])) + 128) >> 8;
}
dst += dlinesize;
msrc += mlinesize;
asrc += alinesize;
}
}
static void premultiply8yuv(const uint8_t *msrc, const uint8_t *asrc,
uint8_t *dst,
ptrdiff_t mlinesize, ptrdiff_t alinesize,
ptrdiff_t dlinesize,
int w, int h,
int half, int shift, int offset)
{
int x, y;
for (y = 0; y < h; y++) {
for (x = 0; x < w; x++) {
dst[x] = ((((msrc[x] - 128) * (((asrc[x] >> 1) & 1) + asrc[x]))) >> 8) + 128;
}
dst += dlinesize;
msrc += mlinesize;
asrc += alinesize;
}
}
static void premultiply8offset(const uint8_t *msrc, const uint8_t *asrc,
uint8_t *dst,
ptrdiff_t mlinesize, ptrdiff_t alinesize,
ptrdiff_t dlinesize,
int w, int h,
int half, int shift, int offset)
{
int x, y;
for (y = 0; y < h; y++) {
for (x = 0; x < w; x++) {
dst[x] = ((((msrc[x] - offset) * (((asrc[x] >> 1) & 1) + asrc[x])) + 128) >> 8) + offset;
}
dst += dlinesize;
msrc += mlinesize;
asrc += alinesize;
}
}
static void premultiply16(const uint8_t *mmsrc, const uint8_t *aasrc,
uint8_t *ddst,
ptrdiff_t mlinesize, ptrdiff_t alinesize,
ptrdiff_t dlinesize,
int w, int h,
int half, int shift, int offset)
{
const uint16_t *msrc = (const uint16_t *)mmsrc;
const uint16_t *asrc = (const uint16_t *)aasrc;
uint16_t *dst = (uint16_t *)ddst;
int x, y;
for (y = 0; y < h; y++) {
for (x = 0; x < w; x++) {
dst[x] = ((msrc[x] * (((asrc[x] >> 1) & 1) + asrc[x])) + half) >> shift;
}
dst += dlinesize / 2;
msrc += mlinesize / 2;
asrc += alinesize / 2;
}
}
static void premultiply16yuv(const uint8_t *mmsrc, const uint8_t *aasrc,
uint8_t *ddst,
ptrdiff_t mlinesize, ptrdiff_t alinesize,
ptrdiff_t dlinesize,
int w, int h,
int half, int shift, int offset)
{
const uint16_t *msrc = (const uint16_t *)mmsrc;
const uint16_t *asrc = (const uint16_t *)aasrc;
uint16_t *dst = (uint16_t *)ddst;
int x, y;
for (y = 0; y < h; y++) {
for (x = 0; x < w; x++) {
dst[x] = ((((msrc[x] - half) * (((asrc[x] >> 1) & 1) + asrc[x]))) >> shift) + half;
}
dst += dlinesize / 2;
msrc += mlinesize / 2;
asrc += alinesize / 2;
}
}
static void premultiply16offset(const uint8_t *mmsrc, const uint8_t *aasrc,
uint8_t *ddst,
ptrdiff_t mlinesize, ptrdiff_t alinesize,
ptrdiff_t dlinesize,
int w, int h,
int half, int shift, int offset)
{
const uint16_t *msrc = (const uint16_t *)mmsrc;
const uint16_t *asrc = (const uint16_t *)aasrc;
uint16_t *dst = (uint16_t *)ddst;
int x, y;
for (y = 0; y < h; y++) {
for (x = 0; x < w; x++) {
dst[x] = ((((msrc[x] - offset) * (((asrc[x] >> 1) & 1) + asrc[x])) + half) >> shift) + offset;
}
dst += dlinesize / 2;
msrc += mlinesize / 2;
asrc += alinesize / 2;
}
}
static int process_frame(FFFrameSync *fs)
{
AVFilterContext *ctx = fs->parent;
PreMultiplyContext *s = fs->opaque;
AVFilterLink *outlink = ctx->outputs[0];
AVFrame *out, *base, *alpha;
int ret;
if ((ret = ff_framesync_get_frame(&s->fs, 0, &base, 0)) < 0 ||
(ret = ff_framesync_get_frame(&s->fs, 1, &alpha, 0)) < 0)
return ret;
if (ctx->is_disabled) {
out = av_frame_clone(base);
if (!out)
return AVERROR(ENOMEM);
} else {
int p, full, limited;
out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
if (!out)
return AVERROR(ENOMEM);
av_frame_copy_props(out, base);
full = base->color_range == AVCOL_RANGE_JPEG;
limited = base->color_range == AVCOL_RANGE_MPEG;
switch (outlink->format) {
case AV_PIX_FMT_YUV444P:
s->premultiply[0] = full ? premultiply8 : premultiply8offset;
s->premultiply[1] = premultiply8yuv;
s->premultiply[2] = premultiply8yuv;
break;
case AV_PIX_FMT_YUVJ444P:
s->premultiply[0] = premultiply8;
s->premultiply[1] = premultiply8yuv;
s->premultiply[2] = premultiply8yuv;
break;
case AV_PIX_FMT_GBRP:
s->premultiply[0] = limited ? premultiply8offset : premultiply8;
s->premultiply[1] = limited ? premultiply8offset : premultiply8;
s->premultiply[2] = limited ? premultiply8offset : premultiply8;
break;
case AV_PIX_FMT_YUV444P9:
case AV_PIX_FMT_YUV444P10:
case AV_PIX_FMT_YUV444P12:
case AV_PIX_FMT_YUV444P14:
case AV_PIX_FMT_YUV444P16:
s->premultiply[0] = full ? premultiply16 : premultiply16offset;
s->premultiply[1] = premultiply16yuv;
s->premultiply[2] = premultiply16yuv;
break;
case AV_PIX_FMT_GBRP9:
case AV_PIX_FMT_GBRP10:
case AV_PIX_FMT_GBRP12:
case AV_PIX_FMT_GBRP14:
case AV_PIX_FMT_GBRP16:
s->premultiply[0] = limited ? premultiply16offset : premultiply16;
s->premultiply[1] = limited ? premultiply16offset : premultiply16;
s->premultiply[2] = limited ? premultiply16offset : premultiply16;
break;
case AV_PIX_FMT_GRAY8:
s->premultiply[0] = limited ? premultiply8offset : premultiply8;
break;
case AV_PIX_FMT_GRAY10:
case AV_PIX_FMT_GRAY12:
case AV_PIX_FMT_GRAY16:
s->premultiply[0] = limited ? premultiply16offset : premultiply16;
break;
}
for (p = 0; p < s->nb_planes; p++) {
s->premultiply[p](base->data[p], alpha->data[0],
out->data[p],
base->linesize[p], alpha->linesize[0],
out->linesize[p],
s->width[p], s->height[p],
s->half, s->depth, s->offset);
}
}
out->pts = av_rescale_q(base->pts, s->fs.time_base, outlink->time_base);
return ff_filter_frame(outlink, out);
}
static int config_input(AVFilterLink *inlink)
{
AVFilterContext *ctx = inlink->dst;
PreMultiplyContext *s = ctx->priv;
const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format);
int vsub, hsub;
s->nb_planes = av_pix_fmt_count_planes(inlink->format);
hsub = desc->log2_chroma_w;
vsub = desc->log2_chroma_h;
s->height[1] = s->height[2] = AV_CEIL_RSHIFT(inlink->h, vsub);
s->height[0] = s->height[3] = inlink->h;
s->width[1] = s->width[2] = AV_CEIL_RSHIFT(inlink->w, hsub);
s->width[0] = s->width[3] = inlink->w;
s->depth = desc->comp[0].depth;
s->half = (1 << s->depth) / 2;
s->offset = 16 << (s->depth - 8);
return 0;
}
static int config_output(AVFilterLink *outlink)
{
AVFilterContext *ctx = outlink->src;
PreMultiplyContext *s = ctx->priv;
AVFilterLink *base = ctx->inputs[0];
AVFilterLink *alpha = ctx->inputs[1];
FFFrameSyncIn *in;
int ret;
if (base->format != alpha->format) {
av_log(ctx, AV_LOG_ERROR, "inputs must be of same pixel format\n");
return AVERROR(EINVAL);
}
if (base->w != alpha->w ||
base->h != alpha->h) {
av_log(ctx, AV_LOG_ERROR, "First input link %s parameters "
"(size %dx%d) do not match the corresponding "
"second input link %s parameters (%dx%d) ",
ctx->input_pads[0].name, base->w, base->h,
ctx->input_pads[1].name, alpha->w, alpha->h);
return AVERROR(EINVAL);
}
outlink->w = base->w;
outlink->h = base->h;
outlink->time_base = base->time_base;
outlink->sample_aspect_ratio = base->sample_aspect_ratio;
outlink->frame_rate = base->frame_rate;
if ((ret = ff_framesync_init(&s->fs, ctx, 2)) < 0)
return ret;
in = s->fs.in;
in[0].time_base = base->time_base;
in[1].time_base = alpha->time_base;
in[0].sync = 1;
in[0].before = EXT_STOP;
in[0].after = EXT_INFINITY;
in[1].sync = 1;
in[1].before = EXT_STOP;
in[1].after = EXT_INFINITY;
s->fs.opaque = s;
s->fs.on_event = process_frame;
return ff_framesync_configure(&s->fs);
}
static int filter_frame(AVFilterLink *inlink, AVFrame *buf)
{
PreMultiplyContext *s = inlink->dst->priv;
return ff_framesync_filter_frame(&s->fs, inlink, buf);
}
static int request_frame(AVFilterLink *outlink)
{
PreMultiplyContext *s = outlink->src->priv;
return ff_framesync_request_frame(&s->fs, outlink);
}
static av_cold void uninit(AVFilterContext *ctx)
{
PreMultiplyContext *s = ctx->priv;
ff_framesync_uninit(&s->fs);
}
static const AVFilterPad premultiply_inputs[] = {
{
.name = "main",
.type = AVMEDIA_TYPE_VIDEO,
.filter_frame = filter_frame,
.config_props = config_input,
},
{
.name = "alpha",
.type = AVMEDIA_TYPE_VIDEO,
.filter_frame = filter_frame,
},
{ NULL }
};
static const AVFilterPad premultiply_outputs[] = {
{
.name = "default",
.type = AVMEDIA_TYPE_VIDEO,
.config_props = config_output,
.request_frame = request_frame,
},
{ NULL }
};
AVFilter ff_vf_premultiply = {
.name = "premultiply",
.description = NULL_IF_CONFIG_SMALL("PreMultiply first stream with first plane of second stream."),
.priv_size = sizeof(PreMultiplyContext),
.uninit = uninit,
.query_formats = query_formats,
.inputs = premultiply_inputs,
.outputs = premultiply_outputs,
.priv_class = &premultiply_class,
.flags = AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL,
};