git.sesse.net Git - ffmpeg/blob - libavfilter/filtfmts.c

   1 /*
   2  * Copyright (c) 2009 Stefano Sabatini
   3  *
   4  * This file is part of FFmpeg.
   5  *
   6  * FFmpeg is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * FFmpeg is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with FFmpeg; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  19  */
  20
  21 #include <stdio.h>
  22
  23 #include "libavformat/avformat.h"
  24 #include "libavutil/pixdesc.h"
  25 #include "libavutil/samplefmt.h"
  26 #include "libavfilter/avfilter.h"
  27 #include "libavfilter/formats.h"
  28
  29 #undef fprintf
  30 #undef printf
  31
  32 static void print_formats(AVFilterContext *filter_ctx)
  33 {
  34     int i, j;
  35
  36 #define PRINT_FMTS(inout, outin, INOUT)                                 \
  37     for (i = 0; i < filter_ctx->inout##put_count; i++) {                     \
  38         if (filter_ctx->inout##puts[i]->type == AVMEDIA_TYPE_VIDEO) {   \
  39             AVFilterFormats *fmts =                                     \
  40                 filter_ctx->inout##puts[i]->outin##_formats;            \
  41             for (j = 0; j < fmts->format_count; j++)                    \
  42                 if(av_get_pix_fmt_name(fmts->formats[j]))               \
  43                 printf(#INOUT "PUT[%d] %s: fmt:%s\n",                   \
  44                        i, filter_ctx->filter->inout##puts[i].name,      \
  45                        av_get_pix_fmt_name(fmts->formats[j]));          \
  46         } else if (filter_ctx->inout##puts[i]->type == AVMEDIA_TYPE_AUDIO) { \
  47             AVFilterFormats *fmts;                                      \
  48                                                                         \
  49             fmts = filter_ctx->inout##puts[i]->outin##_formats;         \
  50             for (j = 0; j < fmts->format_count; j++)                    \
  51                 printf(#INOUT "PUT[%d] %s: fmt:%s\n",                   \
  52                        i, filter_ctx->filter->inout##puts[i].name,      \
  53                        av_get_sample_fmt_name(fmts->formats[j]));       \
  54                                                                         \
  55             fmts = filter_ctx->inout##puts[i]->outin##_channel_layouts; \
  56             for (j = 0; j < fmts->format_count; j++) {                  \
  57                 char buf[256];                                          \
  58                 av_get_channel_layout_string(buf, sizeof(buf), -1,      \
  59                                              fmts->formats[j]);         \
  60                 printf(#INOUT "PUT[%d] %s: chlayout:%s\n",              \
  61                        i, filter_ctx->filter->inout##puts[i].name, buf); \
  62             }                                                           \
  63         }                                                               \
  64     }                                                                   \
  65
  66     PRINT_FMTS(in,  out, IN);
  67     PRINT_FMTS(out, in,  OUT);
  68 }
  69
  70 int main(int argc, char **argv)
  71 {
  72     AVFilter *filter;
  73     AVFilterContext *filter_ctx;
  74     const char *filter_name;
  75     const char *filter_args = NULL;
  76     int i;
  77
  78     av_log_set_level(AV_LOG_DEBUG);
  79
  80     if (!argv[1]) {
  81         fprintf(stderr, "Missing filter name as argument\n");
  82         return 1;
  83     }
  84
  85     filter_name = argv[1];
  86     if (argv[2])
  87         filter_args = argv[2];
  88
  89     avfilter_register_all();
  90
  91     /* get a corresponding filter and open it */
  92     if (!(filter = avfilter_get_by_name(filter_name))) {
  93         fprintf(stderr, "Unrecognized filter with name '%s'\n", filter_name);
  94         return 1;
  95     }
  96
  97     if (avfilter_open(&filter_ctx, filter, NULL) < 0) {
  98         fprintf(stderr, "Impossible to open filter with name '%s'\n",
  99                 filter_name);
 100         return 1;
 101     }
 102     if (avfilter_init_filter(filter_ctx, filter_args, NULL) < 0) {
 103         fprintf(stderr, "Impossible to init filter '%s' with arguments '%s'\n",
 104                 filter_name, filter_args);
 105         return 1;
 106     }
 107
 108     /* create a link for each of the input pads */
 109     for (i = 0; i < filter_ctx->input_count; i++) {
 110         AVFilterLink *link = av_mallocz(sizeof(AVFilterLink));
 111         link->type = filter_ctx->filter->inputs[i].type;
 112         filter_ctx->inputs[i] = link;
 113     }
 114     for (i = 0; i < filter_ctx->output_count; i++) {
 115         AVFilterLink *link = av_mallocz(sizeof(AVFilterLink));
 116         link->type = filter_ctx->filter->outputs[i].type;
 117         filter_ctx->outputs[i] = link;
 118     }
 119
 120     if (filter->query_formats)
 121         filter->query_formats(filter_ctx);
 122     else
 123         ff_default_query_formats(filter_ctx);
 124
 125     print_formats(filter_ctx);
 126
 127     avfilter_free(filter_ctx);
 128     fflush(stdout);
 129     return 0;
 130 }