File size: 5,547 Bytes
8ead80b |
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 |
/*
* Copyright (c) 2009 Stefano Sabatini
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <stdio.h>
#include "libavutil/channel_layout.h"
#include "libavutil/mem.h"
#include "libavutil/pixdesc.h"
#include "libavutil/samplefmt.h"
#define FF_INTERNAL_FIELDS 1
#include "libavfilter/framequeue.h"
#include "libavfilter/avfilter.h"
#include "libavfilter/formats.h"
#include "libavfilter/internal.h"
static void print_formats_internal(AVFilterLink **links, const AVFilterPad *pads,
unsigned nb, size_t fmts_cfg_offset,
const char *inout_string)
{
for (unsigned i = 0; i < nb; i++) {
const AVFilterLink *const link = links[i];
const AVFilterFormatsConfig *const cfg = (AVFilterFormatsConfig*)((const char*)link + fmts_cfg_offset);
const char *pad_name = avfilter_pad_get_name(pads, i);
if (link->type == AVMEDIA_TYPE_VIDEO) {
const AVFilterFormats *const fmts = cfg->formats;
for (unsigned j = 0; fmts && j < fmts->nb_formats; j++) {
printf("%s[%u] %s: fmt:%s\n",
inout_string, i, pad_name,
av_get_pix_fmt_name(fmts->formats[j]));
}
} else if (link->type == AVMEDIA_TYPE_AUDIO) {
const AVFilterFormats *const fmts = cfg->formats;
const AVFilterChannelLayouts *const layouts = cfg->channel_layouts;
for (unsigned j = 0; fmts && j < fmts->nb_formats; j++)
printf("%s[%u] %s: fmt:%s\n",
inout_string, i, pad_name,
av_get_sample_fmt_name(fmts->formats[j]));
for (unsigned j = 0; layouts && j < layouts->nb_channel_layouts; j++) {
char buf[256];
av_channel_layout_describe(&layouts->channel_layouts[j], buf, sizeof(buf));
printf("%s[%u] %s: chlayout:%s\n",
inout_string, i, pad_name, buf);
}
}
}
}
static void print_formats(AVFilterContext *filter_ctx)
{
print_formats_internal(filter_ctx->inputs, filter_ctx->input_pads,
filter_ctx->nb_inputs,
offsetof(AVFilterLink, outcfg), "INPUT");
print_formats_internal(filter_ctx->outputs, filter_ctx->output_pads,
filter_ctx->nb_outputs,
offsetof(AVFilterLink, incfg), "OUTPUT");
}
int main(int argc, char **argv)
{
const AVFilter *filter;
AVFilterContext *filter_ctx;
AVFilterGraph *graph_ctx;
const char *filter_name;
const char *filter_args = NULL;
int i;
int ret = 0;
av_log_set_level(AV_LOG_DEBUG);
if (argc < 2) {
fprintf(stderr, "Missing filter name as argument\n");
return 1;
}
filter_name = argv[1];
if (argc > 2)
filter_args = argv[2];
/* allocate graph */
graph_ctx = avfilter_graph_alloc();
if (!graph_ctx)
return 1;
/* get a corresponding filter and open it */
if (!(filter = avfilter_get_by_name(filter_name))) {
fprintf(stderr, "Unrecognized filter with name '%s'\n", filter_name);
return 1;
}
/* open filter and add it to the graph */
if (!(filter_ctx = avfilter_graph_alloc_filter(graph_ctx, filter, filter_name))) {
fprintf(stderr, "Impossible to open filter with name '%s'\n",
filter_name);
return 1;
}
if (avfilter_init_str(filter_ctx, filter_args) < 0) {
fprintf(stderr, "Impossible to init filter '%s' with arguments '%s'\n",
filter_name, filter_args);
return 1;
}
/* create a link for each of the input pads */
for (i = 0; i < filter_ctx->nb_inputs; i++) {
AVFilterLink *link = av_mallocz(sizeof(AVFilterLink));
if (!link) {
fprintf(stderr, "Unable to allocate memory for filter input link\n");
ret = 1;
goto fail;
}
link->type = avfilter_pad_get_type(filter_ctx->input_pads, i);
filter_ctx->inputs[i] = link;
}
for (i = 0; i < filter_ctx->nb_outputs; i++) {
AVFilterLink *link = av_mallocz(sizeof(AVFilterLink));
if (!link) {
fprintf(stderr, "Unable to allocate memory for filter output link\n");
ret = 1;
goto fail;
}
link->type = avfilter_pad_get_type(filter_ctx->output_pads, i);
filter_ctx->outputs[i] = link;
}
if (filter->formats_state == FF_FILTER_FORMATS_QUERY_FUNC)
ret = filter->formats.query_func(filter_ctx);
else
ret = ff_default_query_formats(filter_ctx);
print_formats(filter_ctx);
fail:
avfilter_free(filter_ctx);
avfilter_graph_free(&graph_ctx);
fflush(stdout);
return ret;
}
|