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/*
* Copyright (c) 2002 A'rpi
* Copyright (C) 2012 Clément Bœsch
*
* 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.
*/
/**
* @file
* libpostproc filter, ported from MPlayer.
*/
#include "libavutil/avassert.h"
#include "libavutil/mem.h"
#include "libavutil/opt.h"
#include "filters.h"
#include "qp_table.h"
#include "video.h"
#include "libpostproc/postprocess.h"
typedef struct PPFilterContext {
const AVClass *class;
char *subfilters;
int mode_id;
pp_mode *modes[PP_QUALITY_MAX + 1];
void *pp_ctx;
} PPFilterContext;
#define OFFSET(x) offsetof(PPFilterContext, x)
#define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
static const AVOption pp_options[] = {
{ "subfilters", "set postprocess subfilters", OFFSET(subfilters), AV_OPT_TYPE_STRING, {.str="de"}, .flags = FLAGS },
{ NULL }
};
AVFILTER_DEFINE_CLASS(pp);
static av_cold int pp_init(AVFilterContext *ctx)
{
int i;
PPFilterContext *pp = ctx->priv;
for (i = 0; i <= PP_QUALITY_MAX; i++) {
pp->modes[i] = pp_get_mode_by_name_and_quality(pp->subfilters, i);
if (!pp->modes[i])
return AVERROR_EXTERNAL;
}
pp->mode_id = PP_QUALITY_MAX;
return 0;
}
static int pp_process_command(AVFilterContext *ctx, const char *cmd, const char *args,
char *res, int res_len, int flags)
{
PPFilterContext *pp = ctx->priv;
if (!strcmp(cmd, "quality")) {
pp->mode_id = av_clip(strtol(args, NULL, 10), 0, PP_QUALITY_MAX);
return 0;
}
return AVERROR(ENOSYS);
}
static const enum AVPixelFormat pix_fmts[] = {
AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUVJ420P,
AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUVJ422P,
AV_PIX_FMT_YUV411P,
AV_PIX_FMT_GBRP,
AV_PIX_FMT_YUV444P, AV_PIX_FMT_YUVJ444P,
AV_PIX_FMT_YUV440P, AV_PIX_FMT_YUVJ440P,
AV_PIX_FMT_GRAY8,
AV_PIX_FMT_NONE
};
static int pp_config_props(AVFilterLink *inlink)
{
int flags = PP_CPU_CAPS_AUTO;
PPFilterContext *pp = inlink->dst->priv;
switch (inlink->format) {
case AV_PIX_FMT_GRAY8:
case AV_PIX_FMT_YUVJ420P:
case AV_PIX_FMT_YUV420P: flags |= PP_FORMAT_420; break;
case AV_PIX_FMT_YUVJ422P:
case AV_PIX_FMT_YUV422P: flags |= PP_FORMAT_422; break;
case AV_PIX_FMT_YUV411P: flags |= PP_FORMAT_411; break;
case AV_PIX_FMT_GBRP:
case AV_PIX_FMT_YUVJ444P:
case AV_PIX_FMT_YUV444P: flags |= PP_FORMAT_444; break;
case AV_PIX_FMT_YUVJ440P:
case AV_PIX_FMT_YUV440P: flags |= PP_FORMAT_440; break;
default: av_assert0(0);
}
pp->pp_ctx = pp_get_context(inlink->w, inlink->h, flags);
if (!pp->pp_ctx)
return AVERROR(ENOMEM);
return 0;
}
static int pp_filter_frame(AVFilterLink *inlink, AVFrame *inbuf)
{
AVFilterContext *ctx = inlink->dst;
PPFilterContext *pp = ctx->priv;
AVFilterLink *outlink = ctx->outputs[0];
const int aligned_w = FFALIGN(outlink->w, 8);
const int aligned_h = FFALIGN(outlink->h, 8);
AVFrame *outbuf;
int qstride = 0;
int8_t *qp_table = NULL;
int ret;
outbuf = ff_get_video_buffer(outlink, aligned_w, aligned_h);
if (!outbuf) {
av_frame_free(&inbuf);
return AVERROR(ENOMEM);
}
av_frame_copy_props(outbuf, inbuf);
outbuf->width = inbuf->width;
outbuf->height = inbuf->height;
ret = ff_qp_table_extract(inbuf, &qp_table, &qstride, NULL, NULL);
if (ret < 0) {
av_frame_free(&inbuf);
av_frame_free(&outbuf);
return ret;
}
pp_postprocess((const uint8_t **)inbuf->data, inbuf->linesize,
outbuf->data, outbuf->linesize,
aligned_w, outlink->h,
qp_table,
qstride,
pp->modes[pp->mode_id],
pp->pp_ctx,
outbuf->pict_type | (qp_table ? PP_PICT_TYPE_QP2 : 0));
av_frame_free(&inbuf);
av_freep(&qp_table);
return ff_filter_frame(outlink, outbuf);
}
static av_cold void pp_uninit(AVFilterContext *ctx)
{
int i;
PPFilterContext *pp = ctx->priv;
for (i = 0; i <= PP_QUALITY_MAX; i++)
pp_free_mode(pp->modes[i]);
if (pp->pp_ctx)
pp_free_context(pp->pp_ctx);
}
static const AVFilterPad pp_inputs[] = {
{
.name = "default",
.type = AVMEDIA_TYPE_VIDEO,
.config_props = pp_config_props,
.filter_frame = pp_filter_frame,
},
};
const AVFilter ff_vf_pp = {
.name = "pp",
.description = NULL_IF_CONFIG_SMALL("Filter video using libpostproc."),
.priv_size = sizeof(PPFilterContext),
.init = pp_init,
.uninit = pp_uninit,
FILTER_INPUTS(pp_inputs),
FILTER_OUTPUTS(ff_video_default_filterpad),
FILTER_PIXFMTS_ARRAY(pix_fmts),
.process_command = pp_process_command,
.priv_class = &pp_class,
.flags = AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC,
};
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