yading@10: /*
yading@10:  * Copyright (c) 2002 A'rpi
yading@10:  * Copyright (C) 2012 Clément Bœsch
yading@10:  *
yading@10:  * This file is part of FFmpeg.
yading@10:  *
yading@10:  * FFmpeg is free software; you can redistribute it and/or modify
yading@10:  * it under the terms of the GNU General Public License as published by
yading@10:  * the Free Software Foundation; either version 2 of the License, or
yading@10:  * (at your option) any later version.
yading@10:  *
yading@10:  * FFmpeg is distributed in the hope that it will be useful,
yading@10:  * but WITHOUT ANY WARRANTY; without even the implied warranty of
yading@10:  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
yading@10:  * GNU General Public License for more details.
yading@10:  *
yading@10:  * You should have received a copy of the GNU General Public License along
yading@10:  * with FFmpeg; if not, write to the Free Software Foundation, Inc.,
yading@10:  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
yading@10:  */
yading@10: 
yading@10: /**
yading@10:  * @file
yading@10:  * libpostproc filter, ported from MPlayer.
yading@10:  */
yading@10: 
yading@10: #include "libavutil/avassert.h"
yading@10: #include "libavutil/opt.h"
yading@10: #include "internal.h"
yading@10: 
yading@10: #include "libpostproc/postprocess.h"
yading@10: 
yading@10: typedef struct {
yading@10:     const AVClass *class;
yading@10:     char *subfilters;
yading@10:     int mode_id;
yading@10:     pp_mode *modes[PP_QUALITY_MAX + 1];
yading@10:     void *pp_ctx;
yading@10: } PPFilterContext;
yading@10: 
yading@10: #define OFFSET(x) offsetof(PPFilterContext, x)
yading@10: #define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
yading@10: static const AVOption pp_options[] = {
yading@10:     { "subfilters", "set postprocess subfilters", OFFSET(subfilters), AV_OPT_TYPE_STRING, {.str="de"}, .flags = FLAGS },
yading@10:     { NULL }
yading@10: };
yading@10: 
yading@10: AVFILTER_DEFINE_CLASS(pp);
yading@10: 
yading@10: static av_cold int pp_init(AVFilterContext *ctx)
yading@10: {
yading@10:     int i;
yading@10:     PPFilterContext *pp = ctx->priv;
yading@10: 
yading@10:     for (i = 0; i <= PP_QUALITY_MAX; i++) {
yading@10:         pp->modes[i] = pp_get_mode_by_name_and_quality(pp->subfilters, i);
yading@10:         if (!pp->modes[i])
yading@10:             return AVERROR_EXTERNAL;
yading@10:     }
yading@10:     pp->mode_id = PP_QUALITY_MAX;
yading@10:     return 0;
yading@10: }
yading@10: 
yading@10: static int pp_process_command(AVFilterContext *ctx, const char *cmd, const char *args,
yading@10:                               char *res, int res_len, int flags)
yading@10: {
yading@10:     PPFilterContext *pp = ctx->priv;
yading@10: 
yading@10:     if (!strcmp(cmd, "quality")) {
yading@10:         pp->mode_id = av_clip(strtol(args, NULL, 10), 0, PP_QUALITY_MAX);
yading@10:         return 0;
yading@10:     }
yading@10:     return AVERROR(ENOSYS);
yading@10: }
yading@10: 
yading@10: static int pp_query_formats(AVFilterContext *ctx)
yading@10: {
yading@10:     static const enum PixelFormat pix_fmts[] = {
yading@10:         AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUVJ420P,
yading@10:         AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUVJ422P,
yading@10:         AV_PIX_FMT_YUV411P,
yading@10:         AV_PIX_FMT_YUV444P, AV_PIX_FMT_YUVJ444P,
yading@10:         AV_PIX_FMT_NONE
yading@10:     };
yading@10:     ff_set_common_formats(ctx, ff_make_format_list(pix_fmts));
yading@10:     return 0;
yading@10: }
yading@10: 
yading@10: static int pp_config_props(AVFilterLink *inlink)
yading@10: {
yading@10:     int flags = PP_CPU_CAPS_AUTO;
yading@10:     PPFilterContext *pp = inlink->dst->priv;
yading@10: 
yading@10:     switch (inlink->format) {
yading@10:     case AV_PIX_FMT_YUVJ420P:
yading@10:     case AV_PIX_FMT_YUV420P: flags |= PP_FORMAT_420; break;
yading@10:     case AV_PIX_FMT_YUVJ422P:
yading@10:     case AV_PIX_FMT_YUV422P: flags |= PP_FORMAT_422; break;
yading@10:     case AV_PIX_FMT_YUV411P: flags |= PP_FORMAT_411; break;
yading@10:     case AV_PIX_FMT_YUVJ444P:
yading@10:     case AV_PIX_FMT_YUV444P: flags |= PP_FORMAT_444; break;
yading@10:     default: av_assert0(0);
yading@10:     }
yading@10: 
yading@10:     pp->pp_ctx = pp_get_context(inlink->w, inlink->h, flags);
yading@10:     if (!pp->pp_ctx)
yading@10:         return AVERROR(ENOMEM);
yading@10:     return 0;
yading@10: }
yading@10: 
yading@10: static int pp_filter_frame(AVFilterLink *inlink, AVFrame *inbuf)
yading@10: {
yading@10:     AVFilterContext *ctx = inlink->dst;
yading@10:     PPFilterContext *pp = ctx->priv;
yading@10:     AVFilterLink *outlink = ctx->outputs[0];
yading@10:     const int aligned_w = FFALIGN(outlink->w, 8);
yading@10:     const int aligned_h = FFALIGN(outlink->h, 8);
yading@10:     AVFrame *outbuf;
yading@10:     int qstride, qp_type;
yading@10:     int8_t *qp_table ;
yading@10: 
yading@10:     outbuf = ff_get_video_buffer(outlink, aligned_w, aligned_h);
yading@10:     if (!outbuf) {
yading@10:         av_frame_free(&inbuf);
yading@10:         return AVERROR(ENOMEM);
yading@10:     }
yading@10:     av_frame_copy_props(outbuf, inbuf);
yading@10:     qp_table = av_frame_get_qp_table(inbuf, &qstride, &qp_type);
yading@10: 
yading@10:     pp_postprocess((const uint8_t **)inbuf->data, inbuf->linesize,
yading@10:                    outbuf->data,                 outbuf->linesize,
yading@10:                    aligned_w, outlink->h,
yading@10:                    qp_table,
yading@10:                    qstride,
yading@10:                    pp->modes[pp->mode_id],
yading@10:                    pp->pp_ctx,
yading@10:                    outbuf->pict_type | (qp_type ? PP_PICT_TYPE_QP2 : 0));
yading@10: 
yading@10:     av_frame_free(&inbuf);
yading@10:     return ff_filter_frame(outlink, outbuf);
yading@10: }
yading@10: 
yading@10: static av_cold void pp_uninit(AVFilterContext *ctx)
yading@10: {
yading@10:     int i;
yading@10:     PPFilterContext *pp = ctx->priv;
yading@10: 
yading@10:     for (i = 0; i <= PP_QUALITY_MAX; i++)
yading@10:         pp_free_mode(pp->modes[i]);
yading@10:     if (pp->pp_ctx)
yading@10:         pp_free_context(pp->pp_ctx);
yading@10: }
yading@10: 
yading@10: static const AVFilterPad pp_inputs[] = {
yading@10:     {
yading@10:         .name         = "default",
yading@10:         .type         = AVMEDIA_TYPE_VIDEO,
yading@10:         .config_props = pp_config_props,
yading@10:         .filter_frame = pp_filter_frame,
yading@10:     },
yading@10:     { NULL }
yading@10: };
yading@10: 
yading@10: static const AVFilterPad pp_outputs[] = {
yading@10:     {
yading@10:         .name = "default",
yading@10:         .type = AVMEDIA_TYPE_VIDEO,
yading@10:     },
yading@10:     { NULL }
yading@10: };
yading@10: 
yading@10: AVFilter avfilter_vf_pp = {
yading@10:     .name            = "pp",
yading@10:     .description     = NULL_IF_CONFIG_SMALL("Filter video using libpostproc."),
yading@10:     .priv_size       = sizeof(PPFilterContext),
yading@10:     .init            = pp_init,
yading@10:     .uninit          = pp_uninit,
yading@10:     .query_formats   = pp_query_formats,
yading@10:     .inputs          = pp_inputs,
yading@10:     .outputs         = pp_outputs,
yading@10:     .process_command = pp_process_command,
yading@10:     .priv_class      = &pp_class,
yading@10: 
yading@10: };