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  1. /*
  2.  * Copyright (c) 2002 A'rpi
  3.  * Copyright (C) 2012 Clément Bœsch
  4.  *
  5.  * This file is part of FFmpeg.
  6.  *
  7.  * FFmpeg is free software; you can redistribute it and/or modify
  8.  * it under the terms of the GNU General Public License as published by
  9.  * the Free Software Foundation; either version 2 of the License, or
  10.  * (at your option) any later version.
  11.  *
  12.  * FFmpeg is distributed in the hope that it will be useful,
  13.  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14.  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15.  * GNU General Public License for more details.
  16.  *
  17.  * You should have received a copy of the GNU General Public License along
  18.  * with FFmpeg; if not, write to the Free Software Foundation, Inc.,
  19.  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  20.  */
  21.  
  22. /**
  23.  * @file
  24.  * libpostproc filter, ported from MPlayer.
  25.  */
  26.  
  27. #include "libavutil/avassert.h"
  28. #include "libavutil/opt.h"
  29. #include "internal.h"
  30.  
  31. #include "libpostproc/postprocess.h"
  32.  
  33. typedef struct {
  34.     const AVClass *class;
  35.     char *subfilters;
  36.     int mode_id;
  37.     pp_mode *modes[PP_QUALITY_MAX + 1];
  38.     void *pp_ctx;
  39. } PPFilterContext;
  40.  
  41. #define OFFSET(x) offsetof(PPFilterContext, x)
  42. #define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
  43. static const AVOption pp_options[] = {
  44.     { "subfilters", "set postprocess subfilters", OFFSET(subfilters), AV_OPT_TYPE_STRING, {.str="de"}, .flags = FLAGS },
  45.     { NULL }
  46. };
  47.  
  48. AVFILTER_DEFINE_CLASS(pp);
  49.  
  50. static av_cold int pp_init(AVFilterContext *ctx)
  51. {
  52.     int i;
  53.     PPFilterContext *pp = ctx->priv;
  54.  
  55.     for (i = 0; i <= PP_QUALITY_MAX; i++) {
  56.         pp->modes[i] = pp_get_mode_by_name_and_quality(pp->subfilters, i);
  57.         if (!pp->modes[i])
  58.             return AVERROR_EXTERNAL;
  59.     }
  60.     pp->mode_id = PP_QUALITY_MAX;
  61.     return 0;
  62. }
  63.  
  64. static int pp_process_command(AVFilterContext *ctx, const char *cmd, const char *args,
  65.                               char *res, int res_len, int flags)
  66. {
  67.     PPFilterContext *pp = ctx->priv;
  68.  
  69.     if (!strcmp(cmd, "quality")) {
  70.         pp->mode_id = av_clip(strtol(args, NULL, 10), 0, PP_QUALITY_MAX);
  71.         return 0;
  72.     }
  73.     return AVERROR(ENOSYS);
  74. }
  75.  
  76. static int pp_query_formats(AVFilterContext *ctx)
  77. {
  78.     static const enum PixelFormat pix_fmts[] = {
  79.         AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUVJ420P,
  80.         AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUVJ422P,
  81.         AV_PIX_FMT_YUV411P,
  82.         AV_PIX_FMT_YUV444P, AV_PIX_FMT_YUVJ444P,
  83.         AV_PIX_FMT_NONE
  84.     };
  85.     ff_set_common_formats(ctx, ff_make_format_list(pix_fmts));
  86.     return 0;
  87. }
  88.  
  89. static int pp_config_props(AVFilterLink *inlink)
  90. {
  91.     int flags = PP_CPU_CAPS_AUTO;
  92.     PPFilterContext *pp = inlink->dst->priv;
  93.  
  94.     switch (inlink->format) {
  95.     case AV_PIX_FMT_YUVJ420P:
  96.     case AV_PIX_FMT_YUV420P: flags |= PP_FORMAT_420; break;
  97.     case AV_PIX_FMT_YUVJ422P:
  98.     case AV_PIX_FMT_YUV422P: flags |= PP_FORMAT_422; break;
  99.     case AV_PIX_FMT_YUV411P: flags |= PP_FORMAT_411; break;
  100.     case AV_PIX_FMT_YUVJ444P:
  101.     case AV_PIX_FMT_YUV444P: flags |= PP_FORMAT_444; break;
  102.     default: av_assert0(0);
  103.     }
  104.  
  105.     pp->pp_ctx = pp_get_context(inlink->w, inlink->h, flags);
  106.     if (!pp->pp_ctx)
  107.         return AVERROR(ENOMEM);
  108.     return 0;
  109. }
  110.  
  111. static int pp_filter_frame(AVFilterLink *inlink, AVFrame *inbuf)
  112. {
  113.     AVFilterContext *ctx = inlink->dst;
  114.     PPFilterContext *pp = ctx->priv;
  115.     AVFilterLink *outlink = ctx->outputs[0];
  116.     const int aligned_w = FFALIGN(outlink->w, 8);
  117.     const int aligned_h = FFALIGN(outlink->h, 8);
  118.     AVFrame *outbuf;
  119.     int qstride, qp_type;
  120.     int8_t *qp_table ;
  121.  
  122.     outbuf = ff_get_video_buffer(outlink, aligned_w, aligned_h);
  123.     if (!outbuf) {
  124.         av_frame_free(&inbuf);
  125.         return AVERROR(ENOMEM);
  126.     }
  127.     av_frame_copy_props(outbuf, inbuf);
  128.     outbuf->width  = inbuf->width;
  129.     outbuf->height = inbuf->height;
  130.     qp_table = av_frame_get_qp_table(inbuf, &qstride, &qp_type);
  131.  
  132.     pp_postprocess((const uint8_t **)inbuf->data, inbuf->linesize,
  133.                    outbuf->data,                 outbuf->linesize,
  134.                    aligned_w, outlink->h,
  135.                    qp_table,
  136.                    qstride,
  137.                    pp->modes[pp->mode_id],
  138.                    pp->pp_ctx,
  139.                    outbuf->pict_type | (qp_type ? PP_PICT_TYPE_QP2 : 0));
  140.  
  141.     av_frame_free(&inbuf);
  142.     return ff_filter_frame(outlink, outbuf);
  143. }
  144.  
  145. static av_cold void pp_uninit(AVFilterContext *ctx)
  146. {
  147.     int i;
  148.     PPFilterContext *pp = ctx->priv;
  149.  
  150.     for (i = 0; i <= PP_QUALITY_MAX; i++)
  151.         pp_free_mode(pp->modes[i]);
  152.     if (pp->pp_ctx)
  153.         pp_free_context(pp->pp_ctx);
  154. }
  155.  
  156. static const AVFilterPad pp_inputs[] = {
  157.     {
  158.         .name         = "default",
  159.         .type         = AVMEDIA_TYPE_VIDEO,
  160.         .config_props = pp_config_props,
  161.         .filter_frame = pp_filter_frame,
  162.     },
  163.     { NULL }
  164. };
  165.  
  166. static const AVFilterPad pp_outputs[] = {
  167.     {
  168.         .name = "default",
  169.         .type = AVMEDIA_TYPE_VIDEO,
  170.     },
  171.     { NULL }
  172. };
  173.  
  174. AVFilter avfilter_vf_pp = {
  175.     .name            = "pp",
  176.     .description     = NULL_IF_CONFIG_SMALL("Filter video using libpostproc."),
  177.     .priv_size       = sizeof(PPFilterContext),
  178.     .init            = pp_init,
  179.     .uninit          = pp_uninit,
  180.     .query_formats   = pp_query_formats,
  181.     .inputs          = pp_inputs,
  182.     .outputs         = pp_outputs,
  183.     .process_command = pp_process_command,
  184.     .priv_class      = &pp_class,
  185.     .flags           = AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC,
  186. };
  187.