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/* |
* Copyright (c) 2013 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/avassert.h" |
#include "libavutil/avstring.h" |
#include "libavutil/imgutils.h" |
#include "libavutil/opt.h" |
#include "libavutil/pixdesc.h" |
#include "avfilter.h" |
#include "internal.h" |
#include "framesync.h" |
|
typedef struct InputParam { |
int depth[4]; |
int nb_planes; |
int planewidth[4]; |
int planeheight[4]; |
} InputParam; |
|
typedef struct MergePlanesContext { |
const AVClass *class; |
int64_t mapping; |
const enum AVPixelFormat out_fmt; |
int nb_inputs; |
int nb_planes; |
int planewidth[4]; |
int planeheight[4]; |
int map[4][2]; |
const AVPixFmtDescriptor *outdesc; |
|
FFFrameSync fs; |
FFFrameSyncIn fsin[3]; /* must be immediately after fs */ |
} MergePlanesContext; |
|
#define OFFSET(x) offsetof(MergePlanesContext, x) |
#define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM |
static const AVOption mergeplanes_options[] = { |
{ "mapping", "set input to output plane mapping", OFFSET(mapping), AV_OPT_TYPE_INT, {.i64=0}, 0, 0x33333333, FLAGS }, |
{ "format", "set output pixel format", OFFSET(out_fmt), AV_OPT_TYPE_PIXEL_FMT, {.i64=AV_PIX_FMT_YUVA444P}, .flags=FLAGS }, |
{ NULL } |
}; |
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AVFILTER_DEFINE_CLASS(mergeplanes); |
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static int filter_frame(AVFilterLink *inlink, AVFrame *in) |
{ |
MergePlanesContext *s = inlink->dst->priv; |
return ff_framesync_filter_frame(&s->fs, inlink, in); |
} |
|
static av_cold int init(AVFilterContext *ctx) |
{ |
MergePlanesContext *s = ctx->priv; |
int64_t m = s->mapping; |
int i, ret; |
|
s->outdesc = av_pix_fmt_desc_get(s->out_fmt); |
if (!(s->outdesc->flags & AV_PIX_FMT_FLAG_PLANAR) || |
s->outdesc->nb_components < 2) { |
av_log(ctx, AV_LOG_ERROR, "Only planar formats with more than one component are supported.\n"); |
return AVERROR(EINVAL); |
} |
s->nb_planes = av_pix_fmt_count_planes(s->out_fmt); |
|
for (i = s->nb_planes - 1; i >= 0; i--) { |
s->map[i][0] = m & 0xf; |
m >>= 4; |
s->map[i][1] = m & 0xf; |
m >>= 4; |
|
if (s->map[i][0] > 3 || s->map[i][1] > 3) { |
av_log(ctx, AV_LOG_ERROR, "Mapping with out of range input and/or plane number.\n"); |
return AVERROR(EINVAL); |
} |
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s->nb_inputs = FFMAX(s->nb_inputs, s->map[i][1] + 1); |
} |
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av_assert0(s->nb_inputs && s->nb_inputs <= 4); |
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for (i = 0; i < s->nb_inputs; i++) { |
AVFilterPad pad = { 0 }; |
|
pad.type = AVMEDIA_TYPE_VIDEO; |
pad.name = av_asprintf("in%d", i); |
if (!pad.name) |
return AVERROR(ENOMEM); |
pad.filter_frame = filter_frame; |
|
if ((ret = ff_insert_inpad(ctx, i, &pad)) < 0){ |
av_freep(&pad.name); |
return ret; |
} |
} |
|
return 0; |
} |
|
static int query_formats(AVFilterContext *ctx) |
{ |
MergePlanesContext *s = ctx->priv; |
AVFilterFormats *formats = NULL; |
int i; |
|
s->outdesc = av_pix_fmt_desc_get(s->out_fmt); |
for (i = 0; i < AV_PIX_FMT_NB; i++) { |
const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(i); |
if (desc->comp[0].depth_minus1 == s->outdesc->comp[0].depth_minus1 && |
av_pix_fmt_count_planes(i) == desc->nb_components) |
ff_add_format(&formats, i); |
} |
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for (i = 0; i < s->nb_inputs; i++) |
ff_formats_ref(formats, &ctx->inputs[i]->out_formats); |
|
formats = NULL; |
ff_add_format(&formats, s->out_fmt); |
ff_formats_ref(formats, &ctx->outputs[0]->in_formats); |
|
return 0; |
} |
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static int process_frame(FFFrameSync *fs) |
{ |
AVFilterContext *ctx = fs->parent; |
AVFilterLink *outlink = ctx->outputs[0]; |
MergePlanesContext *s = fs->opaque; |
AVFrame *in[4] = { NULL }; |
AVFrame *out; |
int i, ret; |
|
for (i = 0; i < s->nb_inputs; i++) { |
if ((ret = ff_framesync_get_frame(&s->fs, i, &in[i], 0)) < 0) |
return ret; |
} |
|
out = ff_get_video_buffer(outlink, outlink->w, outlink->h); |
if (!out) |
return AVERROR(ENOMEM); |
out->pts = av_rescale_q(s->fs.pts, s->fs.time_base, outlink->time_base); |
|
for (i = 0; i < s->nb_planes; i++) { |
const int input = s->map[i][1]; |
const int plane = s->map[i][0]; |
|
av_image_copy_plane(out->data[i], out->linesize[i], |
in[input]->data[plane], in[input]->linesize[plane], |
s->planewidth[i], s->planeheight[i]); |
} |
|
return ff_filter_frame(outlink, out); |
} |
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static int config_output(AVFilterLink *outlink) |
{ |
AVFilterContext *ctx = outlink->src; |
MergePlanesContext *s = ctx->priv; |
InputParam inputsp[4]; |
FFFrameSyncIn *in; |
int i; |
|
ff_framesync_init(&s->fs, ctx, s->nb_inputs); |
in = s->fs.in; |
s->fs.opaque = s; |
s->fs.on_event = process_frame; |
|
outlink->w = ctx->inputs[0]->w; |
outlink->h = ctx->inputs[0]->h; |
outlink->time_base = ctx->inputs[0]->time_base; |
outlink->frame_rate = ctx->inputs[0]->frame_rate; |
outlink->sample_aspect_ratio = ctx->inputs[0]->sample_aspect_ratio; |
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s->planewidth[1] = |
s->planewidth[2] = FF_CEIL_RSHIFT(outlink->w, s->outdesc->log2_chroma_w); |
s->planewidth[0] = |
s->planewidth[3] = outlink->w; |
s->planeheight[1] = |
s->planeheight[2] = FF_CEIL_RSHIFT(outlink->h, s->outdesc->log2_chroma_h); |
s->planeheight[0] = |
s->planeheight[3] = outlink->h; |
|
for (i = 0; i < s->nb_inputs; i++) { |
InputParam *inputp = &inputsp[i]; |
AVFilterLink *inlink = ctx->inputs[i]; |
const AVPixFmtDescriptor *indesc = av_pix_fmt_desc_get(inlink->format); |
int j; |
|
if (outlink->sample_aspect_ratio.num != inlink->sample_aspect_ratio.num || |
outlink->sample_aspect_ratio.den != inlink->sample_aspect_ratio.den) { |
av_log(ctx, AV_LOG_ERROR, "input #%d link %s SAR %d:%d " |
"does not match output link %s SAR %d:%d\n", |
i, ctx->input_pads[i].name, |
inlink->sample_aspect_ratio.num, |
inlink->sample_aspect_ratio.den, |
ctx->output_pads[0].name, |
outlink->sample_aspect_ratio.num, |
outlink->sample_aspect_ratio.den); |
return AVERROR(EINVAL); |
} |
|
inputp->planewidth[1] = |
inputp->planewidth[2] = FF_CEIL_RSHIFT(inlink->w, indesc->log2_chroma_w); |
inputp->planewidth[0] = |
inputp->planewidth[3] = inlink->w; |
inputp->planeheight[1] = |
inputp->planeheight[2] = FF_CEIL_RSHIFT(inlink->h, indesc->log2_chroma_h); |
inputp->planeheight[0] = |
inputp->planeheight[3] = inlink->h; |
inputp->nb_planes = av_pix_fmt_count_planes(inlink->format); |
|
for (j = 0; j < inputp->nb_planes; j++) |
inputp->depth[j] = indesc->comp[j].depth_minus1 + 1; |
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in[i].time_base = inlink->time_base; |
in[i].sync = 1; |
in[i].before = EXT_STOP; |
in[i].after = EXT_STOP; |
} |
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for (i = 0; i < s->nb_planes; i++) { |
const int input = s->map[i][1]; |
const int plane = s->map[i][0]; |
InputParam *inputp = &inputsp[input]; |
|
if (plane + 1 > inputp->nb_planes) { |
av_log(ctx, AV_LOG_ERROR, "input %d does not have %d plane\n", |
input, plane); |
goto fail; |
} |
if (s->outdesc->comp[i].depth_minus1 + 1 != inputp->depth[plane]) { |
av_log(ctx, AV_LOG_ERROR, "output plane %d depth %d does not " |
"match input %d plane %d depth %d\n", |
i, s->outdesc->comp[i].depth_minus1 + 1, |
input, plane, inputp->depth[plane]); |
goto fail; |
} |
if (s->planewidth[i] != inputp->planewidth[plane]) { |
av_log(ctx, AV_LOG_ERROR, "output plane %d width %d does not " |
"match input %d plane %d width %d\n", |
i, s->planewidth[i], |
input, plane, inputp->planewidth[plane]); |
goto fail; |
} |
if (s->planeheight[i] != inputp->planeheight[plane]) { |
av_log(ctx, AV_LOG_ERROR, "output plane %d height %d does not " |
"match input %d plane %d height %d\n", |
i, s->planeheight[i], |
input, plane, inputp->planeheight[plane]); |
goto fail; |
} |
} |
|
return ff_framesync_configure(&s->fs); |
fail: |
return AVERROR(EINVAL); |
} |
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static int request_frame(AVFilterLink *outlink) |
{ |
MergePlanesContext *s = outlink->src->priv; |
return ff_framesync_request_frame(&s->fs, outlink); |
} |
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static av_cold void uninit(AVFilterContext *ctx) |
{ |
MergePlanesContext *s = ctx->priv; |
int i; |
|
ff_framesync_uninit(&s->fs); |
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for (i = 0; i < ctx->nb_inputs; i++) |
av_freep(&ctx->input_pads[i].name); |
} |
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static const AVFilterPad mergeplanes_outputs[] = { |
{ |
.name = "default", |
.type = AVMEDIA_TYPE_VIDEO, |
.config_props = config_output, |
.request_frame = request_frame, |
}, |
{ NULL } |
}; |
|
AVFilter avfilter_vf_mergeplanes = { |
.name = "mergeplanes", |
.description = NULL_IF_CONFIG_SMALL("Merge planes."), |
.priv_size = sizeof(MergePlanesContext), |
.priv_class = &mergeplanes_class, |
.init = init, |
.uninit = uninit, |
.query_formats = query_formats, |
.inputs = NULL, |
.outputs = mergeplanes_outputs, |
.flags = AVFILTER_FLAG_DYNAMIC_INPUTS, |
}; |