git.sesse.net Git - ffmpeg/blob - tools/lavfi-showfiltfmts.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 "libavformat/avformat.h"
  22 #include "libavutil/pixdesc.h"
  23 #include "libavutil/samplefmt.h"
  24 #include "libavfilter/avfilter.h"
  25
  26 static void print_formats(AVFilterContext *filter_ctx)
  27 {
  28     int i, j;
  29
  30 #define PRINT_FMTS(inout, outin, INOUT)                                 \
  31     for (i = 0; i < filter_ctx->inout##put_count; i++) {                     \
  32         if (filter_ctx->inout##puts[i]->type == AVMEDIA_TYPE_VIDEO) {   \
  33             AVFilterFormats *fmts =                                     \
  34                 filter_ctx->inout##puts[i]->outin##_formats;            \
  35             for (j = 0; j < fmts->format_count; j++)                    \
  36                 if(av_get_pix_fmt_name(fmts->formats[j]))               \
  37                 printf(#INOUT "PUT[%d] %s: fmt:%s\n",                   \
  38                        i, filter_ctx->filter->inout##puts[i].name,      \
  39                        av_get_pix_fmt_name(fmts->formats[j]));          \
  40         } else if (filter_ctx->inout##puts[i]->type == AVMEDIA_TYPE_AUDIO) { \
  41             AVFilterFormats *fmts;                                      \
  42                                                                         \
  43             fmts = filter_ctx->inout##puts[i]->outin##_formats;         \
  44             for (j = 0; j < fmts->format_count; j++)                    \
  45                 printf(#INOUT "PUT[%d] %s: fmt:%s\n",                   \
  46                        i, filter_ctx->filter->inout##puts[i].name,      \
  47                        av_get_sample_fmt_name(fmts->formats[j]));       \
  48                                                                         \
  49             fmts = filter_ctx->inout##puts[i]->outin##_channel_layouts; \
  50             for (j = 0; j < fmts->format_count; j++) {                  \
  51                 char buf[256];                                          \
  52                 av_get_channel_layout_string(buf, sizeof(buf), -1,      \
  53                                              fmts->formats[j]);         \
  54                 printf(#INOUT "PUT[%d] %s: chlayout:%s\n",              \
  55                        i, filter_ctx->filter->inout##puts[i].name, buf); \
  56             }                                                           \
  57         }                                                               \
  58     }                                                                   \
  59
  60     PRINT_FMTS(in,  out, IN);
  61     PRINT_FMTS(out, in,  OUT);
  62 }
  63
  64 int main(int argc, char **argv)
  65 {
  66     AVFilter *filter;
  67     AVFilterContext *filter_ctx;
  68     const char *filter_name;
  69     const char *filter_args = NULL;
  70     int i;
  71
  72     av_log_set_level(AV_LOG_DEBUG);
  73
  74     if (!argv[1]) {
  75         fprintf(stderr, "Missing filter name as argument\n");
  76         return 1;
  77     }
  78
  79     filter_name = argv[1];
  80     if (argv[2])
  81         filter_args = argv[2];
  82
  83     avfilter_register_all();
  84
  85     /* get a corresponding filter and open it */
  86     if (!(filter = avfilter_get_by_name(filter_name))) {
  87         fprintf(stderr, "Unrecognized filter with name '%s'\n", filter_name);
  88         return 1;
  89     }
  90
  91     if (avfilter_open(&filter_ctx, filter, NULL) < 0) {
  92         fprintf(stderr, "Impossible to open filter with name '%s'\n",
  93                 filter_name);
  94         return 1;
  95     }
  96     if (avfilter_init_filter(filter_ctx, filter_args, NULL) < 0) {
  97         fprintf(stderr, "Impossible to init filter '%s' with arguments '%s'\n",
  98                 filter_name, filter_args);
  99         return 1;
 100     }
 101
 102     /* create a link for each of the input pads */
 103     for (i = 0; i < filter_ctx->input_count; i++) {
 104         AVFilterLink *link = av_mallocz(sizeof(AVFilterLink));
 105         link->type = filter_ctx->filter->inputs[i].type;
 106         filter_ctx->inputs[i] = link;
 107     }
 108     for (i = 0; i < filter_ctx->output_count; i++) {
 109         AVFilterLink *link = av_mallocz(sizeof(AVFilterLink));
 110         link->type = filter_ctx->filter->outputs[i].type;
 111         filter_ctx->outputs[i] = link;
 112     }
 113
 114     if (filter->query_formats)
 115         filter->query_formats(filter_ctx);
 116     else
 117         avfilter_default_query_formats(filter_ctx);
 118
 119     print_formats(filter_ctx);
 120
 121     avfilter_free(filter_ctx);
 122     fflush(stdout);
 123     return 0;
 124 }