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FFmpeg/libavfilter/vf_chromashift.c

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avfilter: add chromashift filter
2018-11-17 15:04:16 +02:00
/*
* Copyright (c) 2018 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/eval.h"
#include "libavutil/imgutils.h"
#include "libavutil/intreadwrite.h"
#include "libavutil/opt.h"
#include "libavutil/pixdesc.h"
#include "avfilter.h"
#include "formats.h"
#include "internal.h"
#include "video.h"
typedef struct ChromaShiftContext {
const AVClass *class;
int cbh, cbv;
int crh, crv;
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int rh, rv;
int gh, gv;
int bh, bv;
int ah, av;
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int edge;
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int nb_planes;
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int depth;
int height[4];
int width[4];
int linesize[4];
AVFrame *in;
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int is_rgbashift;
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int (*filter_slice)(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs);
} ChromaShiftContext;
static int query_formats(AVFilterContext *ctx)
{
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static const enum AVPixelFormat yuv_pix_fmts[] = {
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AV_PIX_FMT_YUVA444P, AV_PIX_FMT_YUVA422P, AV_PIX_FMT_YUVA420P,
AV_PIX_FMT_YUVJ444P, AV_PIX_FMT_YUVJ440P, AV_PIX_FMT_YUVJ422P,AV_PIX_FMT_YUVJ420P, AV_PIX_FMT_YUVJ411P,
AV_PIX_FMT_YUV444P, AV_PIX_FMT_YUV440P, AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUV411P, AV_PIX_FMT_YUV410P,
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_YUVA420P10, AV_PIX_FMT_YUVA422P10, AV_PIX_FMT_YUVA444P10,
AV_PIX_FMT_YUV420P12, AV_PIX_FMT_YUV422P12, AV_PIX_FMT_YUV444P12, AV_PIX_FMT_YUV440P12,
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AV_PIX_FMT_YUVA422P12, AV_PIX_FMT_YUVA444P12,
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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_YUVA420P16, AV_PIX_FMT_YUVA422P16, AV_PIX_FMT_YUVA444P16,
AV_PIX_FMT_NONE
};
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static const enum AVPixelFormat rgb_pix_fmts[] = {
AV_PIX_FMT_GBRP, AV_PIX_FMT_GBRAP, AV_PIX_FMT_GBRP9,
AV_PIX_FMT_GBRP10, AV_PIX_FMT_GBRP12,
AV_PIX_FMT_GBRP14, AV_PIX_FMT_GBRP16,
AV_PIX_FMT_GBRAP10, AV_PIX_FMT_GBRAP12, AV_PIX_FMT_GBRAP16,
AV_PIX_FMT_NONE
};
const enum AVPixelFormat *pix_fmts;
if (!strcmp(ctx->filter->name, "rgbashift"))
pix_fmts = rgb_pix_fmts;
else
pix_fmts = yuv_pix_fmts;
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avfilter/formats: Factor common function combinations out Several combinations of functions happen quite often in query_format functions; e.g. ff_set_common_formats(ctx, ff_make_format_list(sample_fmts)) is very common. This commit therefore adds functions that are equivalent to commonly used function combinations in order to reduce code duplication. Reviewed-by: Nicolas George <george@nsup.org> Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
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return ff_set_common_formats_from_list(ctx, pix_fmts);
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}
#define DEFINE_SMEAR(depth, type, div) \
static int smear_slice ## depth(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs) \
{ \
ChromaShiftContext *s = ctx->priv; \
AVFrame *in = s->in; \
AVFrame *out = arg; \
const int sulinesize = in->linesize[1] / div; \
const int svlinesize = in->linesize[2] / div; \
const int ulinesize = out->linesize[1] / div; \
const int vlinesize = out->linesize[2] / div; \
const int cbh = s->cbh; \
const int cbv = s->cbv; \
const int crh = s->crh; \
const int crv = s->crv; \
const int h = s->height[1]; \
const int w = s->width[1]; \
const int slice_start = (h * jobnr) / nb_jobs; \
const int slice_end = (h * (jobnr+1)) / nb_jobs; \
const type *su = (const type *)in->data[1]; \
const type *sv = (const type *)in->data[2]; \
type *du = (type *)out->data[1] + slice_start * ulinesize; \
type *dv = (type *)out->data[2] + slice_start * vlinesize; \
\
for (int y = slice_start; y < slice_end; y++) { \
const int duy = av_clip(y - cbv, 0, h-1) * sulinesize; \
const int dvy = av_clip(y - crv, 0, h-1) * svlinesize; \
\
for (int x = 0; x < w; x++) { \
du[x] = su[av_clip(x - cbh, 0, w - 1) + duy]; \
dv[x] = sv[av_clip(x - crh, 0, w - 1) + dvy]; \
} \
\
du += ulinesize; \
dv += vlinesize; \
} \
\
return 0; \
}
DEFINE_SMEAR(8, uint8_t, 1)
DEFINE_SMEAR(16, uint16_t, 2)
#define DEFINE_WRAP(depth, type, div) \
static int wrap_slice ## depth(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs) \
{ \
ChromaShiftContext *s = ctx->priv; \
AVFrame *in = s->in; \
AVFrame *out = arg; \
const int sulinesize = in->linesize[1] / div; \
const int svlinesize = in->linesize[2] / div; \
const int ulinesize = out->linesize[1] / div; \
const int vlinesize = out->linesize[2] / div; \
const int cbh = s->cbh; \
const int cbv = s->cbv; \
const int crh = s->crh; \
const int crv = s->crv; \
const int h = s->height[1]; \
const int w = s->width[1]; \
const int slice_start = (h * jobnr) / nb_jobs; \
const int slice_end = (h * (jobnr+1)) / nb_jobs; \
const type *su = (const type *)in->data[1]; \
const type *sv = (const type *)in->data[2]; \
type *du = (type *)out->data[1] + slice_start * ulinesize; \
type *dv = (type *)out->data[2] + slice_start * vlinesize; \
\
for (int y = slice_start; y < slice_end; y++) { \
int uy = (y - cbv) % h; \
int vy = (y - crv) % h; \
\
if (uy < 0) \
uy += h; \
if (vy < 0) \
vy += h; \
\
for (int x = 0; x < w; x++) { \
int ux = (x - cbh) % w; \
int vx = (x - crh) % w; \
\
if (ux < 0) \
ux += w; \
if (vx < 0) \
vx += w; \
\
du[x] = su[ux + uy * sulinesize]; \
dv[x] = sv[vx + vy * svlinesize]; \
} \
\
du += ulinesize; \
dv += vlinesize; \
} \
\
return 0; \
}
DEFINE_WRAP(8, uint8_t, 1)
DEFINE_WRAP(16, uint16_t, 2)
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#define DEFINE_RGBASMEAR(depth, type, div) \
static int rgbasmear_slice ## depth(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs) \
{ \
ChromaShiftContext *s = ctx->priv; \
AVFrame *in = s->in; \
AVFrame *out = arg; \
const int srlinesize = in->linesize[2] / div; \
const int sglinesize = in->linesize[0] / div; \
const int sblinesize = in->linesize[1] / div; \
const int salinesize = in->linesize[3] / div; \
const int rlinesize = out->linesize[2] / div; \
const int glinesize = out->linesize[0] / div; \
const int blinesize = out->linesize[1] / div; \
const int alinesize = out->linesize[3] / div; \
const int rh = s->rh; \
const int rv = s->rv; \
const int gh = s->gh; \
const int gv = s->gv; \
const int bh = s->bh; \
const int bv = s->bv; \
const int ah = s->ah; \
const int av = s->av; \
const int h = s->height[1]; \
const int w = s->width[1]; \
const int slice_start = (h * jobnr) / nb_jobs; \
const int slice_end = (h * (jobnr+1)) / nb_jobs; \
const type *sr = (const type *)in->data[2]; \
const type *sg = (const type *)in->data[0]; \
const type *sb = (const type *)in->data[1]; \
const type *sa = (const type *)in->data[3]; \
type *dr = (type *)out->data[2] + slice_start * rlinesize; \
type *dg = (type *)out->data[0] + slice_start * glinesize; \
type *db = (type *)out->data[1] + slice_start * blinesize; \
type *da = (type *)out->data[3] + slice_start * alinesize; \
\
for (int y = slice_start; y < slice_end; y++) { \
const int ry = av_clip(y - rv, 0, h-1) * srlinesize; \
const int gy = av_clip(y - gv, 0, h-1) * sglinesize; \
const int by = av_clip(y - bv, 0, h-1) * sblinesize; \
int ay; \
\
for (int x = 0; x < w; x++) { \
dr[x] = sr[av_clip(x - rh, 0, w - 1) + ry]; \
dg[x] = sg[av_clip(x - gh, 0, w - 1) + gy]; \
db[x] = sb[av_clip(x - bh, 0, w - 1) + by]; \
} \
\
dr += rlinesize; \
dg += glinesize; \
db += blinesize; \
\
if (s->nb_planes < 4) \
continue; \
ay = av_clip(y - av, 0, h-1) * salinesize; \
for (int x = 0; x < w; x++) { \
da[x] = sa[av_clip(x - ah, 0, w - 1) + ay]; \
} \
\
da += alinesize; \
} \
\
return 0; \
}
DEFINE_RGBASMEAR(8, uint8_t, 1)
DEFINE_RGBASMEAR(16, uint16_t, 2)
#define DEFINE_RGBAWRAP(depth, type, div) \
static int rgbawrap_slice ## depth(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs) \
{ \
ChromaShiftContext *s = ctx->priv; \
AVFrame *in = s->in; \
AVFrame *out = arg; \
const int srlinesize = in->linesize[2] / div; \
const int sglinesize = in->linesize[0] / div; \
const int sblinesize = in->linesize[1] / div; \
const int salinesize = in->linesize[3] / div; \
const int rlinesize = out->linesize[2] / div; \
const int glinesize = out->linesize[0] / div; \
const int blinesize = out->linesize[1] / div; \
const int alinesize = out->linesize[3] / div; \
const int rh = s->rh; \
const int rv = s->rv; \
const int gh = s->gh; \
const int gv = s->gv; \
const int bh = s->bh; \
const int bv = s->bv; \
const int ah = s->ah; \
const int av = s->av; \
const int h = s->height[1]; \
const int w = s->width[1]; \
const int slice_start = (h * jobnr) / nb_jobs; \
const int slice_end = (h * (jobnr+1)) / nb_jobs; \
const type *sr = (const type *)in->data[2]; \
const type *sg = (const type *)in->data[0]; \
const type *sb = (const type *)in->data[1]; \
const type *sa = (const type *)in->data[3]; \
type *dr = (type *)out->data[2] + slice_start * rlinesize; \
type *dg = (type *)out->data[0] + slice_start * glinesize; \
type *db = (type *)out->data[1] + slice_start * blinesize; \
type *da = (type *)out->data[3] + slice_start * alinesize; \
\
for (int y = slice_start; y < slice_end; y++) { \
int ry = (y - rv) % h; \
int gy = (y - gv) % h; \
int by = (y - bv) % h; \
\
if (ry < 0) \
ry += h; \
if (gy < 0) \
gy += h; \
if (by < 0) \
by += h; \
\
for (int x = 0; x < w; x++) { \
int rx = (x - rh) % w; \
int gx = (x - gh) % w; \
int bx = (x - bh) % w; \
\
if (rx < 0) \
rx += w; \
if (gx < 0) \
gx += w; \
if (bx < 0) \
bx += w; \
dr[x] = sr[rx + ry * srlinesize]; \
dg[x] = sg[gx + gy * sglinesize]; \
db[x] = sb[bx + by * sblinesize]; \
} \
\
dr += rlinesize; \
dg += glinesize; \
db += blinesize; \
\
if (s->nb_planes < 4) \
continue; \
for (int x = 0; x < w; x++) { \
int ax = (x - ah) % w; \
int ay = (x - av) % h; \
\
if (ax < 0) \
ax += w; \
if (ay < 0) \
ay += h; \
da[x] = sa[ax + ay * salinesize]; \
} \
\
da += alinesize; \
} \
\
return 0; \
}
DEFINE_RGBAWRAP(8, uint8_t, 1)
DEFINE_RGBAWRAP(16, uint16_t, 2)
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static int filter_frame(AVFilterLink *inlink, AVFrame *in)
{
AVFilterContext *ctx = inlink->dst;
AVFilterLink *outlink = ctx->outputs[0];
ChromaShiftContext *s = ctx->priv;
AVFrame *out;
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);
s->in = in;
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if (!s->is_rgbashift) {
avfilter/vf_chromashift: remove invalid offset
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av_image_copy_plane(out->data[0],
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out->linesize[0],
in->data[0], in->linesize[0],
s->linesize[0], s->height[0]);
}
avfilter/internal: Factor out executing a filter's execute_func The current way of doing it involves writing the ctx parameter twice. Reviewed-by: Nicolas George <george@nsup.org> Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
2021-08-15 21:33:25 +02:00
ff_filter_execute(ctx, s->filter_slice, out, NULL,
FFMIN3(s->height[1],
s->height[2],
ff_filter_get_nb_threads(ctx)));
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s->in = NULL;
av_frame_free(&in);
return ff_filter_frame(outlink, out);
}
static int config_input(AVFilterLink *inlink)
{
AVFilterContext *ctx = inlink->dst;
ChromaShiftContext *s = ctx->priv;
const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format);
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s->is_rgbashift = !strcmp(ctx->filter->name, "rgbashift");
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s->depth = desc->comp[0].depth;
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s->nb_planes = desc->nb_components;
if (s->is_rgbashift) {
if (s->edge)
s->filter_slice = s->depth > 8 ? rgbawrap_slice16 : rgbawrap_slice8;
else
s->filter_slice = s->depth > 8 ? rgbasmear_slice16 : rgbasmear_slice8;
} else {
if (s->edge)
s->filter_slice = s->depth > 8 ? wrap_slice16 : wrap_slice8;
else
s->filter_slice = s->depth > 8 ? smear_slice16 : smear_slice8;
}
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s->height[1] = s->height[2] = AV_CEIL_RSHIFT(inlink->h, desc->log2_chroma_h);
s->height[0] = s->height[3] = inlink->h;
s->width[1] = s->width[2] = AV_CEIL_RSHIFT(inlink->w, desc->log2_chroma_w);
s->width[0] = s->width[3] = inlink->w;
return av_image_fill_linesizes(s->linesize, inlink->format, inlink->w);
}
avfilter/vf_chromashift: add support for commands
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static int process_command(AVFilterContext *ctx, const char *cmd, const char *args,
char *res, int res_len, int flags)
{
int ret;
ret = ff_filter_process_command(ctx, cmd, args, res, res_len, flags);
if (ret < 0)
return ret;
return config_input(ctx->inputs[0]);
}
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#define OFFSET(x) offsetof(ChromaShiftContext, x)
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#define VFR AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_FILTERING_PARAM | AV_OPT_FLAG_RUNTIME_PARAM
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static const AVOption chromashift_options[] = {
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{ "cbh", "shift chroma-blue horizontally", OFFSET(cbh), AV_OPT_TYPE_INT, {.i64=0}, -255, 255, .flags = VFR },
{ "cbv", "shift chroma-blue vertically", OFFSET(cbv), AV_OPT_TYPE_INT, {.i64=0}, -255, 255, .flags = VFR },
{ "crh", "shift chroma-red horizontally", OFFSET(crh), AV_OPT_TYPE_INT, {.i64=0}, -255, 255, .flags = VFR },
{ "crv", "shift chroma-red vertically", OFFSET(crv), AV_OPT_TYPE_INT, {.i64=0}, -255, 255, .flags = VFR },
{ "edge", "set edge operation", OFFSET(edge), AV_OPT_TYPE_INT, {.i64=0}, 0, 1, .flags = VFR, "edge" },
{ "smear", 0, 0, AV_OPT_TYPE_CONST, {.i64=0}, 0, 0, .flags = VFR, "edge" },
{ "wrap", 0, 0, AV_OPT_TYPE_CONST, {.i64=1}, 0, 0, .flags = VFR, "edge" },
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{ NULL },
};
static const AVFilterPad inputs[] = {
{
.name = "default",
.type = AVMEDIA_TYPE_VIDEO,
.filter_frame = filter_frame,
.config_props = config_input,
},
};
static const AVFilterPad outputs[] = {
{
.name = "default",
.type = AVMEDIA_TYPE_VIDEO,
},
};
AVFILTER_DEFINE_CLASS(chromashift);
avfilter: Constify all AVFilters This is possible now that the next-API is gone. Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com> Signed-off-by: James Almer <jamrial@gmail.com>
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const AVFilter ff_vf_chromashift = {
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.name = "chromashift",
.description = NULL_IF_CONFIG_SMALL("Shift chroma."),
.priv_size = sizeof(ChromaShiftContext),
.priv_class = &chromashift_class,
avfilter/avfilter: Add numbers of (in|out)pads directly to AVFilter Up until now, an AVFilter's lists of input and output AVFilterPads were terminated by a sentinel and the only way to get the length of these lists was by using avfilter_pad_count(). This has two drawbacks: first, sizeof(AVFilterPad) is not negligible (i.e. 64B on 64bit systems); second, getting the size involves a function call instead of just reading the data. This commit therefore changes this. The sentinels are removed and new private fields nb_inputs and nb_outputs are added to AVFilter that contain the number of elements of the respective AVFilterPad array. Given that AVFilter.(in|out)puts are the only arrays of zero-terminated AVFilterPads an API user has access to (AVFilterContext.(in|out)put_pads are not zero-terminated and they already have a size field) the argument to avfilter_pad_count() is always one of these lists, so it just has to find the filter the list belongs to and read said number. This is slower than before, but a replacement function that just reads the internal numbers that users are expected to switch to will be added soon; and furthermore, avfilter_pad_count() is probably never called in hot loops anyway. This saves about 49KiB from the binary; notice that these sentinels are not in .bss despite being zeroed: they are in .data.rel.ro due to the non-sentinels. Reviewed-by: Nicolas George <george@nsup.org> Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
2021-08-12 13:05:31 +02:00
FILTER_OUTPUTS(outputs),
FILTER_INPUTS(inputs),
avfilter: Replace query_formats callback with union of list and callback If one looks at the many query_formats callbacks in existence, one will immediately recognize that there is one type of default callback for video and a slightly different default callback for audio: It is "return ff_set_common_formats_from_list(ctx, pix_fmts);" for video with a filter-specific pix_fmts list. For audio, it is the same with a filter-specific sample_fmts list together with ff_set_common_all_samplerates() and ff_set_common_all_channel_counts(). This commit allows to remove the boilerplate query_formats callbacks by replacing said callback with a union consisting the old callback and pointers for pixel and sample format arrays. For the not uncommon case in which these lists only contain a single entry (besides the sentinel) enum AVPixelFormat and enum AVSampleFormat fields are also added to the union to store them directly in the AVFilter, thereby avoiding a relocation. The state of said union will be contained in a new, dedicated AVFilter field (the nb_inputs and nb_outputs fields have been shrunk to uint8_t in order to create a hole for this new field; this is no problem, as the maximum of all the nb_inputs is four; for nb_outputs it is only two). The state's default value coincides with the earlier default of query_formats being unset, namely that the filter accepts all formats (and also sample rates and channel counts/layouts for audio) provided that these properties agree coincide for all inputs and outputs. By using different union members for audio and video filters the type-unsafety of using the same functions for audio and video lists will furthermore be more confined to formats.c than before. When the new fields are used, they will also avoid allocations: Currently something nearly equivalent to ff_default_query_formats() is called after every successful call to a query_formats callback; yet in the common case that the newly allocated AVFilterFormats are not used at all (namely if there are no free links) these newly allocated AVFilterFormats are freed again without ever being used. Filters no longer using the callback will not exhibit this any more. Reviewed-by: Paul B Mahol <onemda@gmail.com> Reviewed-by: Nicolas George <george@nsup.org> Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
2021-09-27 12:07:35 +02:00
FILTER_QUERY_FUNC(query_formats),
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.flags = AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC | AVFILTER_FLAG_SLICE_THREADS,
avfilter/vf_chromashift: add support for commands
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.process_command = process_command,
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};
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static const AVOption rgbashift_options[] = {
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{ "rh", "shift red horizontally", OFFSET(rh), AV_OPT_TYPE_INT, {.i64=0}, -255, 255, .flags = VFR },
{ "rv", "shift red vertically", OFFSET(rv), AV_OPT_TYPE_INT, {.i64=0}, -255, 255, .flags = VFR },
{ "gh", "shift green horizontally", OFFSET(gh), AV_OPT_TYPE_INT, {.i64=0}, -255, 255, .flags = VFR },
{ "gv", "shift green vertically", OFFSET(gv), AV_OPT_TYPE_INT, {.i64=0}, -255, 255, .flags = VFR },
{ "bh", "shift blue horizontally", OFFSET(bh), AV_OPT_TYPE_INT, {.i64=0}, -255, 255, .flags = VFR },
{ "bv", "shift blue vertically", OFFSET(bv), AV_OPT_TYPE_INT, {.i64=0}, -255, 255, .flags = VFR },
{ "ah", "shift alpha horizontally", OFFSET(ah), AV_OPT_TYPE_INT, {.i64=0}, -255, 255, .flags = VFR },
{ "av", "shift alpha vertically", OFFSET(av), AV_OPT_TYPE_INT, {.i64=0}, -255, 255, .flags = VFR },
{ "edge", "set edge operation", OFFSET(edge), AV_OPT_TYPE_INT, {.i64=0}, 0, 1, .flags = VFR, "edge" },
{ "smear", 0, 0, AV_OPT_TYPE_CONST, {.i64=0}, 0, 0, .flags = VFR, "edge" },
{ "wrap", 0, 0, AV_OPT_TYPE_CONST, {.i64=1}, 0, 0, .flags = VFR, "edge" },
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{ NULL },
};
AVFILTER_DEFINE_CLASS(rgbashift);
avfilter: Constify all AVFilters This is possible now that the next-API is gone. Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com> Signed-off-by: James Almer <jamrial@gmail.com>
2021-04-19 18:33:56 +02:00
const AVFilter ff_vf_rgbashift = {
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.name = "rgbashift",
.description = NULL_IF_CONFIG_SMALL("Shift RGBA."),
.priv_size = sizeof(ChromaShiftContext),
.priv_class = &rgbashift_class,
avfilter/avfilter: Add numbers of (in|out)pads directly to AVFilter Up until now, an AVFilter's lists of input and output AVFilterPads were terminated by a sentinel and the only way to get the length of these lists was by using avfilter_pad_count(). This has two drawbacks: first, sizeof(AVFilterPad) is not negligible (i.e. 64B on 64bit systems); second, getting the size involves a function call instead of just reading the data. This commit therefore changes this. The sentinels are removed and new private fields nb_inputs and nb_outputs are added to AVFilter that contain the number of elements of the respective AVFilterPad array. Given that AVFilter.(in|out)puts are the only arrays of zero-terminated AVFilterPads an API user has access to (AVFilterContext.(in|out)put_pads are not zero-terminated and they already have a size field) the argument to avfilter_pad_count() is always one of these lists, so it just has to find the filter the list belongs to and read said number. This is slower than before, but a replacement function that just reads the internal numbers that users are expected to switch to will be added soon; and furthermore, avfilter_pad_count() is probably never called in hot loops anyway. This saves about 49KiB from the binary; notice that these sentinels are not in .bss despite being zeroed: they are in .data.rel.ro due to the non-sentinels. Reviewed-by: Nicolas George <george@nsup.org> Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
2021-08-12 13:05:31 +02:00
FILTER_OUTPUTS(outputs),
FILTER_INPUTS(inputs),
avfilter: Replace query_formats callback with union of list and callback If one looks at the many query_formats callbacks in existence, one will immediately recognize that there is one type of default callback for video and a slightly different default callback for audio: It is "return ff_set_common_formats_from_list(ctx, pix_fmts);" for video with a filter-specific pix_fmts list. For audio, it is the same with a filter-specific sample_fmts list together with ff_set_common_all_samplerates() and ff_set_common_all_channel_counts(). This commit allows to remove the boilerplate query_formats callbacks by replacing said callback with a union consisting the old callback and pointers for pixel and sample format arrays. For the not uncommon case in which these lists only contain a single entry (besides the sentinel) enum AVPixelFormat and enum AVSampleFormat fields are also added to the union to store them directly in the AVFilter, thereby avoiding a relocation. The state of said union will be contained in a new, dedicated AVFilter field (the nb_inputs and nb_outputs fields have been shrunk to uint8_t in order to create a hole for this new field; this is no problem, as the maximum of all the nb_inputs is four; for nb_outputs it is only two). The state's default value coincides with the earlier default of query_formats being unset, namely that the filter accepts all formats (and also sample rates and channel counts/layouts for audio) provided that these properties agree coincide for all inputs and outputs. By using different union members for audio and video filters the type-unsafety of using the same functions for audio and video lists will furthermore be more confined to formats.c than before. When the new fields are used, they will also avoid allocations: Currently something nearly equivalent to ff_default_query_formats() is called after every successful call to a query_formats callback; yet in the common case that the newly allocated AVFilterFormats are not used at all (namely if there are no free links) these newly allocated AVFilterFormats are freed again without ever being used. Filters no longer using the callback will not exhibit this any more. Reviewed-by: Paul B Mahol <onemda@gmail.com> Reviewed-by: Nicolas George <george@nsup.org> Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
2021-09-27 12:07:35 +02:00
FILTER_QUERY_FUNC(query_formats),
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.flags = AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC | AVFILTER_FLAG_SLICE_THREADS,
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.process_command = process_command,
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};
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