tools/lavfi-showfiltfmts.c
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00001 /*
00002  * Copyright (c) 2009 Stefano Sabatini
00003  *
00004  * This file is part of FFmpeg.
00005  *
00006  * FFmpeg is free software; you can redistribute it and/or
00007  * modify it under the terms of the GNU Lesser General Public
00008  * License as published by the Free Software Foundation; either
00009  * version 2.1 of the License, or (at your option) any later version.
00010  *
00011  * FFmpeg is distributed in the hope that it will be useful,
00012  * but WITHOUT ANY WARRANTY; without even the implied warranty of
00013  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00014  * Lesser General Public License for more details.
00015  *
00016  * You should have received a copy of the GNU Lesser General Public
00017  * License along with FFmpeg; if not, write to the Free Software
00018  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
00019  */
00020 
00021 #include "libavformat/avformat.h"
00022 #include "libavutil/pixdesc.h"
00023 #include "libavutil/samplefmt.h"
00024 #include "libavfilter/avfilter.h"
00025 
00026 static void print_formats(AVFilterContext *filter_ctx)
00027 {
00028     int i, j;
00029 
00030 #define PRINT_FMTS(inout, outin, INOUT)                                 \
00031     for (i = 0; i < filter_ctx->inout##put_count; i++) {                     \
00032         if (filter_ctx->inout##puts[i]->type == AVMEDIA_TYPE_VIDEO) {   \
00033             AVFilterFormats *fmts =                                     \
00034                 filter_ctx->inout##puts[i]->outin##_formats;            \
00035             for (j = 0; j < fmts->format_count; j++)                    \
00036                 if(av_get_pix_fmt_name(fmts->formats[j]))               \
00037                 printf(#INOUT "PUT[%d] %s: fmt:%s\n",                   \
00038                        i, filter_ctx->filter->inout##puts[i].name,      \
00039                        av_get_pix_fmt_name(fmts->formats[j]));          \
00040         } else if (filter_ctx->inout##puts[i]->type == AVMEDIA_TYPE_AUDIO) { \
00041             AVFilterFormats *fmts;                                      \
00042                                                                         \
00043             fmts = filter_ctx->inout##puts[i]->outin##_formats;         \
00044             for (j = 0; j < fmts->format_count; j++)                    \
00045                 printf(#INOUT "PUT[%d] %s: fmt:%s\n",                   \
00046                        i, filter_ctx->filter->inout##puts[i].name,      \
00047                        av_get_sample_fmt_name(fmts->formats[j]));       \
00048                                                                         \
00049             fmts = filter_ctx->inout##puts[i]->outin##_chlayouts;       \
00050             for (j = 0; j < fmts->format_count; j++) {                  \
00051                 char buf[256];                                          \
00052                 av_get_channel_layout_string(buf, sizeof(buf), -1,      \
00053                                              fmts->formats[j]);         \
00054                 printf(#INOUT "PUT[%d] %s: chlayout:%s\n",              \
00055                        i, filter_ctx->filter->inout##puts[i].name, buf); \
00056             }                                                           \
00057                                                                         \
00058             fmts = filter_ctx->inout##puts[i]->outin##_packing;         \
00059             for (j = 0; j < fmts->format_count; j++) {                  \
00060                 printf(#INOUT "PUT[%d] %s: packing:%s\n",               \
00061                        i, filter_ctx->filter->inout##puts[i].name,      \
00062                        fmts->formats[j] == AVFILTER_PACKED ?            \
00063                                            "packed" : "planar");        \
00064             }                                                           \
00065         }                                                               \
00066     }                                                                   \
00067 
00068     PRINT_FMTS(in,  out, IN);
00069     PRINT_FMTS(out, in,  OUT);
00070 }
00071 
00072 int main(int argc, char **argv)
00073 {
00074     AVFilter *filter;
00075     AVFilterContext *filter_ctx;
00076     const char *filter_name;
00077     const char *filter_args = NULL;
00078     int i;
00079 
00080     av_log_set_level(AV_LOG_DEBUG);
00081 
00082     if (!argv[1]) {
00083         fprintf(stderr, "Missing filter name as argument\n");
00084         return 1;
00085     }
00086 
00087     filter_name = argv[1];
00088     if (argv[2])
00089         filter_args = argv[2];
00090 
00091     avfilter_register_all();
00092 
00093     /* get a corresponding filter and open it */
00094     if (!(filter = avfilter_get_by_name(filter_name))) {
00095         fprintf(stderr, "Unrecognized filter with name '%s'\n", filter_name);
00096         return 1;
00097     }
00098 
00099     if (avfilter_open(&filter_ctx, filter, NULL) < 0) {
00100         fprintf(stderr, "Inpossible to open filter with name '%s'\n",
00101                 filter_name);
00102         return 1;
00103     }
00104     if (avfilter_init_filter(filter_ctx, filter_args, NULL) < 0) {
00105         fprintf(stderr, "Impossible to init filter '%s' with arguments '%s'\n",
00106                 filter_name, filter_args);
00107         return 1;
00108     }
00109 
00110     /* create a link for each of the input pads */
00111     for (i = 0; i < filter_ctx->input_count; i++) {
00112         AVFilterLink *link = av_mallocz(sizeof(AVFilterLink));
00113         link->type = filter_ctx->filter->inputs[i].type;
00114         filter_ctx->inputs[i] = link;
00115     }
00116     for (i = 0; i < filter_ctx->output_count; i++) {
00117         AVFilterLink *link = av_mallocz(sizeof(AVFilterLink));
00118         link->type = filter_ctx->filter->outputs[i].type;
00119         filter_ctx->outputs[i] = link;
00120     }
00121 
00122     if (filter->query_formats)
00123         filter->query_formats(filter_ctx);
00124     else
00125         avfilter_default_query_formats(filter_ctx);
00126 
00127     print_formats(filter_ctx);
00128 
00129     avfilter_free(filter_ctx);
00130     fflush(stdout);
00131     return 0;
00132 }