/*
* Copyright (c) 2004 Ville Saari
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public
* License as published by the Free Software Foundation; either
* version 2 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 General Public License for more details.
*
* You should have received a copy of the GNU 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/avassert.h"
#include "libavutil/imgutils.h"
#include "libavutil/pixdesc.h"
#include "libavutil/opt.h"
#include "avfilter.h"
#include "formats.h"
#include "internal.h"
#include "video.h"
enum PhaseMode {
PROGRESSIVE,
TOP_FIRST,
BOTTOM_FIRST,
TOP_FIRST_ANALYZE,
BOTTOM_FIRST_ANALYZE,
ANALYZE,
FULL_ANALYZE,
AUTO,
AUTO_ANALYZE
};
#define DEPTH 8
#include "phase_template.c"
#undef DEPTH
#define DEPTH 9
#include "phase_template.c"
#undef DEPTH
#define DEPTH 10
#include "phase_template.c"
#undef DEPTH
#define DEPTH 12
#include "phase_template.c"
#undef DEPTH
#define DEPTH 14
#include "phase_template.c"
#undef DEPTH
#define DEPTH 16
#include "phase_template.c"
typedef struct PhaseContext {
const AVClass *class;
int mode; ///<PhaseMode
AVFrame *frame; /* previous frame */
int nb_planes;
int planeheight[4];
int linesize[4];
enum PhaseMode (*analyze_plane)(void *ctx, enum PhaseMode mode, AVFrame *old, AVFrame *new);
} PhaseContext;
#define OFFSET(x) offsetof(PhaseContext, x)
#define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
#define CONST(name, help, val, unit) { name, help, 0, AV_OPT_TYPE_CONST, {.i64=val}, 0, 0, FLAGS, unit }
static const AVOption phase_options[] = {
{ "mode", "set phase mode", OFFSET(mode), AV_OPT_TYPE_INT, {.i64=AUTO_ANALYZE}, PROGRESSIVE, AUTO_ANALYZE, FLAGS, "mode" },
CONST("p", "progressive", PROGRESSIVE, "mode"),
CONST("t", "top first", TOP_FIRST, "mode"),
CONST("b", "bottom first", BOTTOM_FIRST, "mode"),
CONST("T", "top first analyze", TOP_FIRST_ANALYZE, "mode"),
CONST("B", "bottom first analyze", BOTTOM_FIRST_ANALYZE, "mode"),
CONST("u", "analyze", ANALYZE, "mode"),
CONST("U", "full analyze", FULL_ANALYZE, "mode"),
CONST("a", "auto", AUTO, "mode"),
CONST("A", "auto analyze", AUTO_ANALYZE, "mode"),
{ NULL }
};
AVFILTER_DEFINE_CLASS(phase);
static int query_formats(AVFilterContext *ctx)
{
static const enum AVPixelFormat pix_fmts[] = {
AV_PIX_FMT_GRAY8,
AV_PIX_FMT_GRAY9,
AV_PIX_FMT_GRAY10,
AV_PIX_FMT_GRAY12,
AV_PIX_FMT_GRAY14,
AV_PIX_FMT_GRAY16,
AV_PIX_FMT_YUV410P, AV_PIX_FMT_YUV411P,
AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUV422P,
AV_PIX_FMT_YUV440P, AV_PIX_FMT_YUV444P,
AV_PIX_FMT_YUVJ420P, AV_PIX_FMT_YUVJ422P,
AV_PIX_FMT_YUVJ440P, AV_PIX_FMT_YUVJ444P,
AV_PIX_FMT_YUVJ411P,
AV_PIX_FMT_YUV420P9, AV_PIX_FMT_YUV422P9, AV_PIX_FMT_YUV444P9,
AV_PIX_FMT_YUV420P10, AV_PIX_FMT_YUV422P10, AV_PIX_FMT_YUV444P10,
AV_PIX_FMT_YUV440P10,
AV_PIX_FMT_YUV444P12, AV_PIX_FMT_YUV422P12, AV_PIX_FMT_YUV420P12,
AV_PIX_FMT_YUV440P12,
AV_PIX_FMT_YUV444P14, AV_PIX_FMT_YUV422P14, AV_PIX_FMT_YUV420P14,
AV_PIX_FMT_YUV420P16, AV_PIX_FMT_YUV422P16, 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_YUVA420P, AV_PIX_FMT_YUVA422P, AV_PIX_FMT_YUVA444P,
AV_PIX_FMT_YUVA444P9, AV_PIX_FMT_YUVA444P10, AV_PIX_FMT_YUVA444P12, AV_PIX_FMT_YUVA444P16,
AV_PIX_FMT_YUVA422P9, AV_PIX_FMT_YUVA422P10, AV_PIX_FMT_YUVA422P12, AV_PIX_FMT_YUVA422P16,
AV_PIX_FMT_YUVA420P9, AV_PIX_FMT_YUVA420P10, AV_PIX_FMT_YUVA420P16,
AV_PIX_FMT_GBRAP, AV_PIX_FMT_GBRAP10, AV_PIX_FMT_GBRAP12, AV_PIX_FMT_GBRAP16,
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 config_input(AVFilterLink *inlink)
{
PhaseContext *s = inlink->dst->priv;
const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format);
int ret;
switch (desc->comp[0].depth) {
case 8: s->analyze_plane = analyze_plane_8; break;
case 9: s->analyze_plane = analyze_plane_9; break;
case 10: s->analyze_plane = analyze_plane_10; break;
case 12: s->analyze_plane = analyze_plane_12; break;
case 14: s->analyze_plane = analyze_plane_14; break;
case 16: s->analyze_plane = analyze_plane_16; break;
default: av_assert0(0);
};
if ((ret = av_image_fill_linesizes(s->linesize, inlink->format, inlink->w)) < 0)
return ret;
s->planeheight[1] = s->planeheight[2] = AV_CEIL_RSHIFT(inlink->h, desc->log2_chroma_h);
s->planeheight[0] = s->planeheight[3] = inlink->h;
s->nb_planes = av_pix_fmt_count_planes(inlink->format);
return 0;
}
static int filter_frame(AVFilterLink *inlink, AVFrame *in)
{
AVFilterContext *ctx = inlink->dst;
AVFilterLink *outlink = ctx->outputs[0];
PhaseContext *s = ctx->priv;
enum PhaseMode mode;
int plane, top, y;
AVFrame *out;
if (ctx->is_disabled) {
av_frame_free(&s->frame);
/* we keep a reference to the previous frame so the filter can start
* being useful as soon as it's not disabled, avoiding the 1-frame
* delay. */
s->frame = av_frame_clone(in);
return ff_filter_frame(outlink, in);
}
out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
if (!out) {
av_frame_free(&in);
return AVERROR(ENOMEM);
}
av_frame_copy_props(out, in);
if (!s->frame) {
s->frame = in;
mode = PROGRESSIVE;
} else {
mode = s->analyze_plane(ctx, s->mode, s->frame, in);
}
for (plane = 0; plane < s->nb_planes; plane++) {
const uint8_t *buf = s->frame->data[plane];
const uint8_t *from = in->data[plane];
uint8_t *to = out->data[plane];
for (y = 0, top = 1; y < s->planeheight[plane]; y++, top ^= 1) {
memcpy(to, mode == (top ? BOTTOM_FIRST : TOP_FIRST) ? buf : from, s->linesize[plane]);
buf += s->frame->linesize[plane];
from += in->linesize[plane];
to += out->linesize[plane];
}
}
if (in != s->frame)
av_frame_free(&s->frame);
s->frame = in;
return ff_filter_frame(outlink, out);
}
static av_cold void uninit(AVFilterContext *ctx)
{
PhaseContext *s = ctx->priv;
av_frame_free(&s->frame);
}
static const AVFilterPad phase_inputs[] = {
{
.name = "default",
.type = AVMEDIA_TYPE_VIDEO,
.filter_frame = filter_frame,
.config_props = config_input,
},
{ NULL }
};
static const AVFilterPad phase_outputs[] = {
{
.name = "default",
.type = AVMEDIA_TYPE_VIDEO,
},
{ NULL }
};
AVFilter ff_vf_phase = {
.name = "phase",
.description = NULL_IF_CONFIG_SMALL("Phase shift fields."),
.priv_size = sizeof(PhaseContext),
.priv_class = &phase_class,
.uninit = uninit,
.query_formats = query_formats,
.inputs = phase_inputs,
.outputs = phase_outputs,
.flags = AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL,
};