int main(int argc, char **argv)
{
AVFilter *filter;
AVFilterContext *filter_ctx;
const char *filter_name;
const char *filter_args = NULL;
int i;
av_log_set_level(AV_LOG_DEBUG);
if (!argv[1]) {
fprintf(stderr, "Missing filter name as argument\n");
return 1;
}
filter_name = argv[1];
if (argv[2])
filter_args = argv[2];
avfilter_register_all();
/* 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;
}
if (avfilter_open(&filter_ctx, filter, NULL) < 0) {
fprintf(stderr, "Impossible to open filter with name '%s'\n",
filter_name);
return 1;
}
if (avfilter_init_filter(filter_ctx, filter_args, NULL) < 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->input_count; i++) {
AVFilterLink *link = av_mallocz(sizeof(AVFilterLink));
link->type = filter_ctx->filter->inputs[i].type;
filter_ctx->inputs[i] = link;
}
for (i = 0; i < filter_ctx->output_count; i++) {
AVFilterLink *link = av_mallocz(sizeof(AVFilterLink));
link->type = filter_ctx->filter->outputs[i].type;
filter_ctx->outputs[i] = link;
}
if (filter->query_formats)
filter->query_formats(filter_ctx);
else
avfilter_default_query_formats(filter_ctx);
print_formats(filter_ctx);
avfilter_free(filter_ctx);
fflush(stdout);
return 0;
}
int main(int argc, char **argv)
{
AVFilter *filter;
AVFilterContext *filter_ctx;
const char *filter_name;
const char *filter_args = NULL;
int i, j;
av_log_set_level(AV_LOG_DEBUG);
if (!argv[1]) {
fprintf(stderr, "Missing filter name as argument\n");
return 1;
}
filter_name = argv[1];
if (argv[2])
filter_args = argv[2];
avfilter_register_all();
/* 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;
}
if (avfilter_open(&filter_ctx, filter, NULL) < 0) {
fprintf(stderr, "Inpossible to open filter with name '%s'\n", filter_name);
return 1;
}
if (avfilter_init_filter(filter_ctx, filter_args, NULL) < 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->input_count; i++) {
AVFilterLink *link = av_mallocz(sizeof(AVFilterLink));
link->type = filter_ctx->filter->inputs[i].type;
filter_ctx->inputs[i] = link;
}
for (i = 0; i < filter_ctx->output_count; i++) {
AVFilterLink *link = av_mallocz(sizeof(AVFilterLink));
link->type = filter_ctx->filter->outputs[i].type;
filter_ctx->outputs[i] = link;
}
if (filter->query_formats)
filter->query_formats(filter_ctx);
else
avfilter_default_query_formats(filter_ctx);
/* print the supported formats in input */
for (i = 0; i < filter_ctx->input_count; i++) {
AVFilterFormats *fmts = filter_ctx->inputs[i]->out_formats;
for (j = 0; j < fmts->format_count; j++)
printf("INPUT[%d] %s: %s\n",
i, filter_ctx->filter->inputs[i].name,
av_pix_fmt_descriptors[fmts->formats[j]].name);
}
/* print the supported formats in output */
for (i = 0; i < filter_ctx->output_count; i++) {
AVFilterFormats *fmts = filter_ctx->outputs[i]->in_formats;
for (j = 0; j < fmts->format_count; j++)
printf("OUTPUT[%d] %s: %s\n",
i, filter_ctx->filter->outputs[i].name,
av_pix_fmt_descriptors[fmts->formats[j]].name);
}
avfilter_destroy(filter_ctx);
fflush(stdout);
return 0;
}
