forked from FFmpeg/FFmpeg
/
vf_yuvrangeconv.c
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/
vf_yuvrangeconv.c
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/*
* Copyright (c) 2014 Coffey
*
* 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/eval.h"
#include "libavutil/opt.h"
#include "libavutil/pixdesc.h"
#include "libavutil/pixfmt.h"
#include "avfilter.h"
#include "formats.h"
#include "internal.h"
#include "video.h"
enum YUVRangeConvMode {
MODE_Y,
MODE_CB,
MODE_CR,
MODE_A,
MODE_FULL,
MODE_MPEG,
MODE_THROUGH,
MODE_NB,
};
typedef struct {
const AVClass *class;
enum YUVRangeConvMode mode;
int il, ih, ol, oh;
int chroma_w, chroma_h;
uint8_t lut[4][256];
uint8_t lut_mtof[4][256];
uint8_t lut_ftom[4][256];
int compare;
int autodetect;
} YUVRangeConvContext;
#define OFFSET(x) offsetof(YUVRangeConvContext, x)
#define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
static const AVOption yuvrangeconv_options[] = {
{ "mode", "select mode", OFFSET(mode), AV_OPT_TYPE_INT, {.i64=MODE_FULL}, 0, MODE_NB-1, FLAGS, "mode"},
{ "y", "convert y", 0, AV_OPT_TYPE_CONST, {.i64=MODE_Y}, .flags=FLAGS, .unit="mode"},
{ "u", "convert Cb", 0, AV_OPT_TYPE_CONST, {.i64=MODE_CB}, .flags=FLAGS, .unit="mode"},
{ "v", "convert Cr", 0, AV_OPT_TYPE_CONST, {.i64=MODE_CR}, .flags=FLAGS, .unit="mode"},
{ "a", "convert alpha", 0, AV_OPT_TYPE_CONST, {.i64=MODE_A}, .flags=FLAGS, .unit="mode"},
{ "cb", "convert Cb", 0, AV_OPT_TYPE_CONST, {.i64=MODE_CB}, .flags=FLAGS, .unit="mode"},
{ "cr", "convert Cr", 0, AV_OPT_TYPE_CONST, {.i64=MODE_CR}, .flags=FLAGS, .unit="mode"},
{ "full", "mpeg to full range", 0, AV_OPT_TYPE_CONST, {.i64=MODE_FULL}, .flags=FLAGS, .unit="mode"},
{ "jpeg", "mpeg to full range", 0, AV_OPT_TYPE_CONST, {.i64=MODE_FULL}, .flags=FLAGS, .unit="mode"},
{ "mpeg", "full to mpeg range", 0, AV_OPT_TYPE_CONST, {.i64=MODE_MPEG}, .flags=FLAGS, .unit="mode"},
{ "tv", "full to mpeg range", 0, AV_OPT_TYPE_CONST, {.i64=MODE_MPEG}, .flags=FLAGS, .unit="mode"},
{ "through", "no convert", 0, AV_OPT_TYPE_CONST, {.i64=MODE_THROUGH}, .flags=FLAGS, .unit="mode"},
{ "il", "input min", OFFSET(il), AV_OPT_TYPE_INT, {.i64=0}, 0, 255, FLAGS},
{ "ih", "input max", OFFSET(ih), AV_OPT_TYPE_INT, {.i64=255}, 0, 255, FLAGS},
{ "ol", "output min", OFFSET(ol), AV_OPT_TYPE_INT, {.i64=0}, 0, 255, FLAGS},
{ "oh", "output max", OFFSET(oh), AV_OPT_TYPE_INT, {.i64=255}, 0, 255, FLAGS},
{ "compare", "compare effect", OFFSET(compare), AV_OPT_TYPE_INT, {.i64=0}, 0, 1, FLAGS},
{ "autodetect", "convert by auto detect" , OFFSET(autodetect), AV_OPT_TYPE_INT, {.i64=0}, 0, 1, FLAGS},
{ NULL }
};
AVFILTER_DEFINE_CLASS(yuvrangeconv);
static int config_props_input(AVFilterLink *inlink)
{
YUVRangeConvContext *rc = inlink->dst->priv;
const AVPixFmtDescriptor *pixdesc;
// get width, height of chroma plane
pixdesc = av_pix_fmt_desc_get(inlink->format);
rc->chroma_w = AV_CEIL_RSHIFT(inlink->w, pixdesc->log2_chroma_w);
rc->chroma_h = AV_CEIL_RSHIFT(inlink->h, pixdesc->log2_chroma_h);
// alias:
// 'yuvrangeconv=full:1' same as 'yuvrangeconv=full:autodetect=1'
// 'yuvrangeconv=mpeg:1' same as 'yuvrangeconv=mpeg:autodetect=1'
if (((rc->mode == MODE_MPEG) || (rc->mode == MODE_FULL)) && rc->il)
rc->autodetect = 1;
// make lookup table
for (int i = 0; i < 256 ; i++ ) {
int32_t y;
rc->lut[0][i] = (uint8_t)i;
rc->lut[1][i] = (uint8_t)i;
rc->lut[2][i] = (uint8_t)i;
rc->lut[3][i] = (uint8_t)i;
if (rc->mode == MODE_Y || rc->mode == MODE_CB || rc->mode == MODE_CR || rc->mode == MODE_A) {
int32_t din, dout;
din = rc->ih - rc->il;
dout = rc->oh - rc->ol;
if(din) {
if ((i < rc->il) && (rc->il < rc->ih)) y = rc->ol;
else if ((i > rc->il) && (rc->il > rc->ih)) y = rc->ol;
else if ((i < rc->ih) && (rc->il > rc->ih)) y = rc->oh;
else if ((i > rc->ih) && (rc->il < rc->ih)) y = rc->oh;
else y = rc->ol + (((i - rc->il) * dout) + (din / 2) ) / din;
} else {
y = (i < rc->il) ? rc->ol : rc->oh;
}
if (y > 255) y = 255;
if (y < 0) y = 0;
if (rc->mode == MODE_Y)
rc->lut[0][i] = (uint8_t)y;
if (rc->mode == MODE_CB)
rc->lut[1][i] = (uint8_t)y;
if (rc->mode == MODE_CR)
rc->lut[2][i] = (uint8_t)y;
if (rc->mode == MODE_A)
rc->lut[3][i] = (uint8_t)y;
}
// mpeg range (Y16-235, CbCr16-240) to full range (0-255)
y = (((i - 16) * 255) + 110) / 219;
if (y > 255) y = 255;
if (y < 0) y = 0;
rc->lut_mtof[0][i] = (uint8_t)y; // lumi
y = (((i - 128) * 128) + (112 * 128) + 56) / 112;
if (y > 255) y = 255;
if (y < 0) y = 0;
rc->lut_mtof[1][i] = (uint8_t)y; // chroma
rc->lut_mtof[2][i] = (uint8_t)y; // chroma
rc->lut_mtof[3][i] = (uint8_t)i; // alpha
// full range (0-255) to mpeg range (Y16-235, CbCr16-240)
y = (((i * 219) + 128) / 255) + 16;
if (y > 235) y = 235;
if (y < 16) y = 16;
rc->lut_ftom[0][i] = (uint8_t)y; // lumi
y = ( ((i - 128) * 112 ) + (128 * 128) + 64) / 128;
if (y > 240) y = 240;
if (y < 16) y = 16;
rc->lut_ftom[1][i] = (uint8_t)y; // chroma
rc->lut_ftom[2][i] = (uint8_t)y; // chroma
rc->lut_ftom[3][i] = (uint8_t)i; // alpha
}
return 0;
}
static int query_formats(AVFilterContext *ctx)
{
static const enum AVPixelFormat pix_fmts[] = {
AV_PIX_FMT_YUV444P, AV_PIX_FMT_YUV422P,
AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUV411P,
AV_PIX_FMT_YUV410P, AV_PIX_FMT_YUV440P,
AV_PIX_FMT_YUVA444P, AV_PIX_FMT_YUVA422P,
AV_PIX_FMT_YUVA420P,
AV_PIX_FMT_NONE
};
AVFilterFormats *fmts_list = ff_make_format_list(pix_fmts);
if (!fmts_list)
return AVERROR(ENOMEM);
return ff_set_common_formats(ctx, fmts_list);
}
static int filter_frame(AVFilterLink *inlink, AVFrame *inpic)
{
YUVRangeConvContext *rc = inlink->dst->priv;
AVFilterLink *outlink = inlink->dst->outputs[0];
enum AVColorRange color_range;
AVFrame *outpic;
int direct = 0;
if (av_frame_is_writable(inpic)) {
direct = 1;
outpic = inpic;
} else {
outpic = ff_get_video_buffer(outlink, outlink->w, outlink->h);
if (!outpic) {
av_frame_free(&inpic);
return AVERROR(ENOMEM);
}
av_frame_copy_props(outpic, inpic);
}
color_range = av_frame_get_color_range(inpic);
for (int plane = 0; plane < 4; plane++) {
uint8_t *src, *dst;
uint8_t *lut;
int w, h, wc;
int src_linesize, dst_linesize;
lut = rc->lut[plane];
if (rc->autodetect) {
if ((rc->mode == MODE_MPEG) && (color_range != AVCOL_RANGE_MPEG))
lut = rc->lut_ftom[plane];
else if ((rc->mode == MODE_FULL) && (color_range == AVCOL_RANGE_MPEG))
lut = rc->lut_mtof[plane];
} else {
if (rc->mode == MODE_MPEG)
lut = rc->lut_ftom[plane];
else if (rc->mode == MODE_FULL)
lut = rc->lut_mtof[plane];
}
if (inpic->data[plane]) {
src = inpic->data[plane];
dst = outpic->data[plane];
src_linesize = inpic->linesize[plane];
dst_linesize = outpic->linesize[plane];
if ((plane == 1) || (plane == 2)) { // chroma Cb or Cr
w = rc->chroma_w;
h = rc->chroma_h;
} else { // luminance or alpah(if available)
w = inlink->w;
h = inlink->h;
}
if (rc->compare) { wc = w; w = w/2; }
while (h--) {
for (int i = 0; i < w; i++)
dst[i] = lut[src[i]];
if (rc->compare && !direct) {
for (int i = w; i < wc; i++)
dst[i] = src[i];
}
src += src_linesize;
dst += dst_linesize;
}
}
}
if (!direct)
av_frame_free(&inpic);
return ff_filter_frame(outlink, outpic);
}
static const AVFilterPad yuvrangeconv_inputs[] = {
{
.name = "default",
.type = AVMEDIA_TYPE_VIDEO,
.filter_frame = filter_frame,
.config_props = config_props_input,
},
{ NULL }
};
static const AVFilterPad yuvrangeconv_outputs[] = {
{
.name = "default",
.type = AVMEDIA_TYPE_VIDEO,
},
{ NULL }
};
AVFilter ff_vf_yuvrangeconv = {
.name = "yuvrangeconv",
.description = NULL_IF_CONFIG_SMALL("YUV range converter."),
.priv_size = sizeof(YUVRangeConvContext),
.query_formats = query_formats,
.inputs = yuvrangeconv_inputs,
.outputs = yuvrangeconv_outputs,
.priv_class = &yuvrangeconv_class,
};