0,0 → 1,335 |
/* |
* 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/avstring.h" |
#include "libavutil/imgutils.h" |
#include "libavutil/opt.h" |
#include "libavutil/pixdesc.h" |
#include "avfilter.h" |
#include "drawutils.h" |
#include "internal.h" |
|
#define PLANE_R 0x01 |
#define PLANE_G 0x02 |
#define PLANE_B 0x04 |
#define PLANE_A 0x08 |
#define PLANE_Y 0x10 |
#define PLANE_U 0x20 |
#define PLANE_V 0x40 |
|
typedef struct { |
const AVClass *class; |
int requested_planes; |
int map[4]; |
int linesize[4]; |
int is_packed_rgb; |
int depth; |
int step; |
} ExtractPlanesContext; |
|
#define OFFSET(x) offsetof(ExtractPlanesContext, x) |
#define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM |
static const AVOption extractplanes_options[] = { |
{ "planes", "set planes", OFFSET(requested_planes), AV_OPT_TYPE_FLAGS, {.i64=1}, 1, 0xff, FLAGS, "flags"}, |
{ "y", "set luma plane", 0, AV_OPT_TYPE_CONST, {.i64=PLANE_Y}, 0, 0, FLAGS, "flags"}, |
{ "u", "set u plane", 0, AV_OPT_TYPE_CONST, {.i64=PLANE_U}, 0, 0, FLAGS, "flags"}, |
{ "v", "set v plane", 0, AV_OPT_TYPE_CONST, {.i64=PLANE_V}, 0, 0, FLAGS, "flags"}, |
{ "r", "set red plane", 0, AV_OPT_TYPE_CONST, {.i64=PLANE_R}, 0, 0, FLAGS, "flags"}, |
{ "g", "set green plane", 0, AV_OPT_TYPE_CONST, {.i64=PLANE_G}, 0, 0, FLAGS, "flags"}, |
{ "b", "set blue plane", 0, AV_OPT_TYPE_CONST, {.i64=PLANE_B}, 0, 0, FLAGS, "flags"}, |
{ "a", "set alpha plane", 0, AV_OPT_TYPE_CONST, {.i64=PLANE_A}, 0, 0, FLAGS, "flags"}, |
{ NULL } |
}; |
|
AVFILTER_DEFINE_CLASS(extractplanes); |
|
static int query_formats(AVFilterContext *ctx) |
{ |
static const enum AVPixelFormat in_pixfmts[] = { |
AV_PIX_FMT_YUV410P, |
AV_PIX_FMT_YUV411P, |
AV_PIX_FMT_YUV440P, |
AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUVA420P, |
AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUVA422P, |
AV_PIX_FMT_YUVJ420P, AV_PIX_FMT_YUVJ422P, |
AV_PIX_FMT_YUVJ440P, AV_PIX_FMT_YUVJ444P, |
AV_PIX_FMT_YUV444P, AV_PIX_FMT_YUVA444P, |
AV_PIX_FMT_YUV420P16LE, AV_PIX_FMT_YUVA420P16LE, |
AV_PIX_FMT_YUV420P16BE, AV_PIX_FMT_YUVA420P16BE, |
AV_PIX_FMT_YUV422P16LE, AV_PIX_FMT_YUVA422P16LE, |
AV_PIX_FMT_YUV422P16BE, AV_PIX_FMT_YUVA422P16BE, |
AV_PIX_FMT_YUV444P16LE, AV_PIX_FMT_YUVA444P16LE, |
AV_PIX_FMT_YUV444P16BE, AV_PIX_FMT_YUVA444P16BE, |
AV_PIX_FMT_GRAY8, AV_PIX_FMT_GRAY8A, |
AV_PIX_FMT_GRAY16LE, AV_PIX_FMT_GRAY16BE, |
AV_PIX_FMT_RGB24, AV_PIX_FMT_BGR24, |
AV_PIX_FMT_RGBA, AV_PIX_FMT_BGRA, |
AV_PIX_FMT_ARGB, AV_PIX_FMT_ABGR, |
AV_PIX_FMT_RGB48LE, AV_PIX_FMT_BGR48LE, |
AV_PIX_FMT_RGB48BE, AV_PIX_FMT_BGR48BE, |
AV_PIX_FMT_RGBA64LE, AV_PIX_FMT_BGRA64LE, |
AV_PIX_FMT_RGBA64BE, AV_PIX_FMT_BGRA64BE, |
AV_PIX_FMT_GBRP, AV_PIX_FMT_GBRAP, |
AV_PIX_FMT_GBRP16LE, AV_PIX_FMT_GBRP16BE, |
AV_PIX_FMT_GBRAP16LE, AV_PIX_FMT_GBRAP16BE, |
AV_PIX_FMT_NONE, |
}; |
static const enum AVPixelFormat out8_pixfmts[] = { AV_PIX_FMT_GRAY8, AV_PIX_FMT_NONE }; |
static const enum AVPixelFormat out16le_pixfmts[] = { AV_PIX_FMT_GRAY16LE, AV_PIX_FMT_NONE }; |
static const enum AVPixelFormat out16be_pixfmts[] = { AV_PIX_FMT_GRAY16BE, AV_PIX_FMT_NONE }; |
const enum AVPixelFormat *out_pixfmts; |
const AVPixFmtDescriptor *desc; |
AVFilterFormats *avff; |
int i, depth = 0, be = 0; |
|
if (!ctx->inputs[0]->in_formats || |
!ctx->inputs[0]->in_formats->nb_formats) { |
return AVERROR(EAGAIN); |
} |
|
if (!ctx->inputs[0]->out_formats) |
ff_formats_ref(ff_make_format_list(in_pixfmts), &ctx->inputs[0]->out_formats); |
|
avff = ctx->inputs[0]->in_formats; |
desc = av_pix_fmt_desc_get(avff->formats[0]); |
depth = desc->comp[0].depth_minus1; |
be = desc->flags & AV_PIX_FMT_FLAG_BE; |
for (i = 1; i < avff->nb_formats; i++) { |
desc = av_pix_fmt_desc_get(avff->formats[i]); |
if (depth != desc->comp[0].depth_minus1 || |
be != (desc->flags & AV_PIX_FMT_FLAG_BE)) { |
return AVERROR(EAGAIN); |
} |
} |
|
if (depth == 7) |
out_pixfmts = out8_pixfmts; |
else if (be) |
out_pixfmts = out16be_pixfmts; |
else |
out_pixfmts = out16le_pixfmts; |
|
for (i = 0; i < ctx->nb_outputs; i++) |
ff_formats_ref(ff_make_format_list(out_pixfmts), &ctx->outputs[i]->in_formats); |
return 0; |
} |
|
static int config_input(AVFilterLink *inlink) |
{ |
AVFilterContext *ctx = inlink->dst; |
ExtractPlanesContext *e = ctx->priv; |
const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format); |
int plane_avail, ret, i; |
uint8_t rgba_map[4]; |
|
plane_avail = ((desc->flags & AV_PIX_FMT_FLAG_RGB) ? PLANE_R|PLANE_G|PLANE_B : |
PLANE_Y | |
((desc->nb_components > 2) ? PLANE_U|PLANE_V : 0)) | |
((desc->flags & AV_PIX_FMT_FLAG_ALPHA) ? PLANE_A : 0); |
if (e->requested_planes & ~plane_avail) { |
av_log(ctx, AV_LOG_ERROR, "Requested planes not available.\n"); |
return AVERROR(EINVAL); |
} |
if ((ret = av_image_fill_linesizes(e->linesize, inlink->format, inlink->w)) < 0) |
return ret; |
|
e->depth = (desc->comp[0].depth_minus1 + 1) >> 3; |
e->step = av_get_padded_bits_per_pixel(desc) >> 3; |
e->is_packed_rgb = !(desc->flags & AV_PIX_FMT_FLAG_PLANAR); |
if (desc->flags & AV_PIX_FMT_FLAG_RGB) { |
ff_fill_rgba_map(rgba_map, inlink->format); |
for (i = 0; i < 4; i++) |
e->map[i] = rgba_map[e->map[i]]; |
} |
|
return 0; |
} |
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static int config_output(AVFilterLink *outlink) |
{ |
AVFilterContext *ctx = outlink->src; |
AVFilterLink *inlink = ctx->inputs[0]; |
ExtractPlanesContext *e = ctx->priv; |
const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format); |
const int output = outlink->srcpad - ctx->output_pads; |
|
if (e->map[output] == 1 || e->map[output] == 2) { |
outlink->h = FF_CEIL_RSHIFT(inlink->h, desc->log2_chroma_h); |
outlink->w = FF_CEIL_RSHIFT(inlink->w, desc->log2_chroma_w); |
} |
|
return 0; |
} |
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static void extract_from_packed(uint8_t *dst, int dst_linesize, |
const uint8_t *src, int src_linesize, |
int width, int height, |
int depth, int step, int comp) |
{ |
int x, y; |
|
for (y = 0; y < height; y++) { |
switch (depth) { |
case 1: |
for (x = 0; x < width; x++) |
dst[x] = src[x * step + comp]; |
break; |
case 2: |
for (x = 0; x < width; x++) { |
dst[x * 2 ] = src[x * step + comp * 2 ]; |
dst[x * 2 + 1] = src[x * step + comp * 2 + 1]; |
} |
break; |
} |
dst += dst_linesize; |
src += src_linesize; |
} |
} |
|
static int filter_frame(AVFilterLink *inlink, AVFrame *frame) |
{ |
AVFilterContext *ctx = inlink->dst; |
ExtractPlanesContext *e = ctx->priv; |
int i, eof = 0, ret = 0; |
|
for (i = 0; i < ctx->nb_outputs; i++) { |
AVFilterLink *outlink = ctx->outputs[i]; |
const int idx = e->map[i]; |
AVFrame *out; |
|
if (outlink->closed) |
continue; |
|
out = ff_get_video_buffer(outlink, outlink->w, outlink->h); |
if (!out) { |
ret = AVERROR(ENOMEM); |
break; |
} |
av_frame_copy_props(out, frame); |
|
if (e->is_packed_rgb) { |
extract_from_packed(out->data[0], out->linesize[0], |
frame->data[0], frame->linesize[0], |
outlink->w, outlink->h, |
e->depth, |
e->step, idx); |
} else { |
av_image_copy_plane(out->data[0], out->linesize[0], |
frame->data[idx], frame->linesize[idx], |
e->linesize[idx], outlink->h); |
} |
|
ret = ff_filter_frame(outlink, out); |
if (ret == AVERROR_EOF) |
eof++; |
else if (ret < 0) |
break; |
} |
av_frame_free(&frame); |
|
if (eof == ctx->nb_outputs) |
ret = AVERROR_EOF; |
else if (ret == AVERROR_EOF) |
ret = 0; |
return ret; |
} |
|
static av_cold int init(AVFilterContext *ctx) |
{ |
ExtractPlanesContext *e = ctx->priv; |
int planes = (e->requested_planes & 0xf) | (e->requested_planes >> 4); |
int i; |
|
for (i = 0; i < 4; i++) { |
char *name; |
AVFilterPad pad = { 0 }; |
|
if (!(planes & (1 << i))) |
continue; |
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name = av_asprintf("out%d", ctx->nb_outputs); |
if (!name) |
return AVERROR(ENOMEM); |
e->map[ctx->nb_outputs] = i; |
pad.name = name; |
pad.type = AVMEDIA_TYPE_VIDEO; |
pad.config_props = config_output; |
|
ff_insert_outpad(ctx, ctx->nb_outputs, &pad); |
} |
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return 0; |
} |
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static av_cold void uninit(AVFilterContext *ctx) |
{ |
int i; |
|
for (i = 0; i < ctx->nb_outputs; i++) |
av_freep(&ctx->output_pads[i].name); |
} |
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static const AVFilterPad extractplanes_inputs[] = { |
{ |
.name = "default", |
.type = AVMEDIA_TYPE_VIDEO, |
.filter_frame = filter_frame, |
.config_props = config_input, |
}, |
{ NULL } |
}; |
|
AVFilter avfilter_vf_extractplanes = { |
.name = "extractplanes", |
.description = NULL_IF_CONFIG_SMALL("Extract planes as grayscale frames."), |
.priv_size = sizeof(ExtractPlanesContext), |
.priv_class = &extractplanes_class, |
.init = init, |
.uninit = uninit, |
.query_formats = query_formats, |
.inputs = extractplanes_inputs, |
.outputs = NULL, |
.flags = AVFILTER_FLAG_DYNAMIC_OUTPUTS, |
}; |
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#if CONFIG_ALPHAEXTRACT_FILTER |
|
static av_cold int init_alphaextract(AVFilterContext *ctx) |
{ |
ExtractPlanesContext *e = ctx->priv; |
|
e->requested_planes = PLANE_A; |
|
return init(ctx); |
} |
|
AVFilter avfilter_vf_alphaextract = { |
.name = "alphaextract", |
.description = NULL_IF_CONFIG_SMALL("Extract an alpha channel as a " |
"grayscale image component."), |
.priv_size = sizeof(ExtractPlanesContext), |
.init = init_alphaextract, |
.uninit = uninit, |
.query_formats = query_formats, |
.inputs = extractplanes_inputs, |
.outputs = NULL, |
.flags = AVFILTER_FLAG_DYNAMIC_OUTPUTS, |
}; |
#endif /* CONFIG_ALPHAEXTRACT_FILTER */ |