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https://github.com/FFmpeg/FFmpeg.git
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2f62a433f2
Lots of video filters use a very simple input or output: An array with a single AVFilterPad whose name is "default" and whose type is AVMEDIA_TYPE_VIDEO; everything else is unset. Given that we never use pointer equality for inputs or outputs*, we can simply use a single AVFilterPad instead of dozens; this even saves .data.rel.ro (8312B here) as well as relocations. *: In fact, several filters (like the filters in vf_lut.c) already use the same outputs; furthermore, ff_filter_alloc() duplicates the input and output pads so that we do not even work with the pads directly. Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
191 lines
5.5 KiB
C
191 lines
5.5 KiB
C
/*
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* Copyright (c) 2002 A'rpi
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* Copyright (C) 2012 Clément Bœsch
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with FFmpeg; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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/**
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* @file
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* libpostproc filter, ported from MPlayer.
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*/
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#include "libavutil/avassert.h"
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#include "libavutil/opt.h"
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#include "internal.h"
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#include "qp_table.h"
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#include "video.h"
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#include "libpostproc/postprocess.h"
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typedef struct PPFilterContext {
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const AVClass *class;
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char *subfilters;
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int mode_id;
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pp_mode *modes[PP_QUALITY_MAX + 1];
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void *pp_ctx;
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} PPFilterContext;
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#define OFFSET(x) offsetof(PPFilterContext, x)
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#define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
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static const AVOption pp_options[] = {
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{ "subfilters", "set postprocess subfilters", OFFSET(subfilters), AV_OPT_TYPE_STRING, {.str="de"}, .flags = FLAGS },
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{ NULL }
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};
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AVFILTER_DEFINE_CLASS(pp);
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static av_cold int pp_init(AVFilterContext *ctx)
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{
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int i;
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PPFilterContext *pp = ctx->priv;
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for (i = 0; i <= PP_QUALITY_MAX; i++) {
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pp->modes[i] = pp_get_mode_by_name_and_quality(pp->subfilters, i);
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if (!pp->modes[i])
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return AVERROR_EXTERNAL;
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}
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pp->mode_id = PP_QUALITY_MAX;
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return 0;
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}
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static int pp_process_command(AVFilterContext *ctx, const char *cmd, const char *args,
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char *res, int res_len, int flags)
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{
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PPFilterContext *pp = ctx->priv;
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if (!strcmp(cmd, "quality")) {
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pp->mode_id = av_clip(strtol(args, NULL, 10), 0, PP_QUALITY_MAX);
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return 0;
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}
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return AVERROR(ENOSYS);
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}
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static const enum AVPixelFormat pix_fmts[] = {
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AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUVJ420P,
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AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUVJ422P,
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AV_PIX_FMT_YUV411P,
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AV_PIX_FMT_GBRP,
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AV_PIX_FMT_YUV444P, AV_PIX_FMT_YUVJ444P,
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AV_PIX_FMT_YUV440P, AV_PIX_FMT_YUVJ440P,
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AV_PIX_FMT_GRAY8,
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AV_PIX_FMT_NONE
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};
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static int pp_config_props(AVFilterLink *inlink)
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{
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int flags = PP_CPU_CAPS_AUTO;
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PPFilterContext *pp = inlink->dst->priv;
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switch (inlink->format) {
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case AV_PIX_FMT_GRAY8:
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case AV_PIX_FMT_YUVJ420P:
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case AV_PIX_FMT_YUV420P: flags |= PP_FORMAT_420; break;
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case AV_PIX_FMT_YUVJ422P:
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case AV_PIX_FMT_YUV422P: flags |= PP_FORMAT_422; break;
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case AV_PIX_FMT_YUV411P: flags |= PP_FORMAT_411; break;
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case AV_PIX_FMT_GBRP:
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case AV_PIX_FMT_YUVJ444P:
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case AV_PIX_FMT_YUV444P: flags |= PP_FORMAT_444; break;
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case AV_PIX_FMT_YUVJ440P:
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case AV_PIX_FMT_YUV440P: flags |= PP_FORMAT_440; break;
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default: av_assert0(0);
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}
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pp->pp_ctx = pp_get_context(inlink->w, inlink->h, flags);
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if (!pp->pp_ctx)
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return AVERROR(ENOMEM);
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return 0;
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}
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static int pp_filter_frame(AVFilterLink *inlink, AVFrame *inbuf)
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{
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AVFilterContext *ctx = inlink->dst;
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PPFilterContext *pp = ctx->priv;
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AVFilterLink *outlink = ctx->outputs[0];
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const int aligned_w = FFALIGN(outlink->w, 8);
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const int aligned_h = FFALIGN(outlink->h, 8);
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AVFrame *outbuf;
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int qstride = 0;
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int8_t *qp_table = NULL;
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int ret;
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outbuf = ff_get_video_buffer(outlink, aligned_w, aligned_h);
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if (!outbuf) {
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av_frame_free(&inbuf);
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return AVERROR(ENOMEM);
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}
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av_frame_copy_props(outbuf, inbuf);
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outbuf->width = inbuf->width;
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outbuf->height = inbuf->height;
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ret = ff_qp_table_extract(inbuf, &qp_table, &qstride, NULL, NULL);
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if (ret < 0) {
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av_frame_free(&inbuf);
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av_frame_free(&outbuf);
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return ret;
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}
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pp_postprocess((const uint8_t **)inbuf->data, inbuf->linesize,
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outbuf->data, outbuf->linesize,
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aligned_w, outlink->h,
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qp_table,
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qstride,
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pp->modes[pp->mode_id],
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pp->pp_ctx,
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outbuf->pict_type | (qp_table ? PP_PICT_TYPE_QP2 : 0));
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av_frame_free(&inbuf);
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av_freep(&qp_table);
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return ff_filter_frame(outlink, outbuf);
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}
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static av_cold void pp_uninit(AVFilterContext *ctx)
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{
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int i;
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PPFilterContext *pp = ctx->priv;
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for (i = 0; i <= PP_QUALITY_MAX; i++)
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pp_free_mode(pp->modes[i]);
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if (pp->pp_ctx)
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pp_free_context(pp->pp_ctx);
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}
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static const AVFilterPad pp_inputs[] = {
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{
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.name = "default",
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.type = AVMEDIA_TYPE_VIDEO,
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.config_props = pp_config_props,
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.filter_frame = pp_filter_frame,
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},
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};
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const AVFilter ff_vf_pp = {
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.name = "pp",
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.description = NULL_IF_CONFIG_SMALL("Filter video using libpostproc."),
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.priv_size = sizeof(PPFilterContext),
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.init = pp_init,
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.uninit = pp_uninit,
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FILTER_INPUTS(pp_inputs),
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FILTER_OUTPUTS(ff_video_default_filterpad),
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FILTER_PIXFMTS_ARRAY(pix_fmts),
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.process_command = pp_process_command,
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.priv_class = &pp_class,
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.flags = AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC,
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};
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