* Copyright (c) 2008 Vitor Sessak
* Copyright (c) 2007 Bobby Bingham
*
- * This file is part of Libav.
+ * This file is part of FFmpeg.
*
- * Libav is free software; you can redistribute it and/or
+ * 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.
*
- * Libav is distributed in the hope that it will be useful,
+ * 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 Libav; if not, write to the Free Software
+ * License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
char tmp_args[256];
int ret;
- snprintf(inst_name, sizeof(inst_name), "Parsed filter %d %s", index, filt_name);
+ snprintf(inst_name, sizeof(inst_name), "Parsed_%s_%d", filt_name, index);
filt = avfilter_get_by_name(filt_name);
return ret;
}
-static void free_inout(AVFilterInOut *head)
+AVFilterInOut *avfilter_inout_alloc(void)
{
- while (head) {
- AVFilterInOut *next = head->next;
- av_free(head->name);
- av_free(head);
- head = next;
+ return av_mallocz(sizeof(AVFilterInOut));
+}
+
+void avfilter_inout_free(AVFilterInOut **inout)
+{
+ while (*inout) {
+ AVFilterInOut *next = (*inout)->next;
+ av_freep(&(*inout)->name);
+ av_freep(inout);
+ *inout = next;
}
}
}
int avfilter_graph_parse(AVFilterGraph *graph, const char *filters,
- AVFilterInOut *open_inputs,
- AVFilterInOut *open_outputs, void *log_ctx)
+ AVFilterInOut **open_inputs_ptr, AVFilterInOut **open_outputs_ptr,
+ void *log_ctx)
{
- int index = 0, ret;
+ int index = 0, ret = 0;
char chr = 0;
AVFilterInOut *curr_inputs = NULL;
+ AVFilterInOut *open_inputs = open_inputs_ptr ? *open_inputs_ptr : NULL;
+ AVFilterInOut *open_outputs = open_outputs_ptr ? *open_outputs_ptr : NULL;
do {
AVFilterContext *filter;
filters += strspn(filters, WHITESPACES);
if ((ret = parse_inputs(&filters, &curr_inputs, &open_outputs, log_ctx)) < 0)
- goto fail;
+ goto end;
if ((ret = parse_filter(&filter, &filters, graph, index, log_ctx)) < 0)
- goto fail;
+ goto end;
if (filter->input_count == 1 && !curr_inputs && !index) {
- /* First input can be omitted if it is "[in]" */
+ /* First input pad, assume it is "[in]" if not specified */
const char *tmp = "[in]";
if ((ret = parse_inputs(&tmp, &curr_inputs, &open_outputs, log_ctx)) < 0)
- goto fail;
+ goto end;
}
if ((ret = link_filter_inouts(filter, &curr_inputs, &open_inputs, log_ctx)) < 0)
- goto fail;
+ goto end;
if ((ret = parse_outputs(&filters, &curr_inputs, &open_inputs, &open_outputs,
log_ctx)) < 0)
- goto fail;
+ goto end;
filters += strspn(filters, WHITESPACES);
chr = *filters++;
"Invalid filterchain containing an unlabelled output pad: \"%s\"\n",
filterchain);
ret = AVERROR(EINVAL);
- goto fail;
+ goto end;
}
index++;
} while (chr == ',' || chr == ';');
"Unable to parse graph description substring: \"%s\"\n",
filters - 1);
ret = AVERROR(EINVAL);
- goto fail;
+ goto end;
}
- if (open_inputs && !strcmp(open_inputs->name, "out") && curr_inputs) {
- /* Last output can be omitted if it is "[out]" */
+ if (curr_inputs) {
+ /* Last output pad, assume it is "[out]" if not specified */
const char *tmp = "[out]";
if ((ret = parse_outputs(&tmp, &curr_inputs, &open_inputs, &open_outputs,
log_ctx)) < 0)
- goto fail;
+ goto end;
}
- return 0;
-
- fail:
- for (; graph->filter_count > 0; graph->filter_count--)
- avfilter_free(graph->filters[graph->filter_count - 1]);
- av_freep(&graph->filters);
- free_inout(open_inputs);
- free_inout(open_outputs);
- free_inout(curr_inputs);
+end:
+ /* clear open_in/outputs only if not passed as parameters */
+ if (open_inputs_ptr) *open_inputs_ptr = open_inputs;
+ else avfilter_inout_free(&open_inputs);
+ if (open_outputs_ptr) *open_outputs_ptr = open_outputs;
+ else avfilter_inout_free(&open_outputs);
+ avfilter_inout_free(&curr_inputs);
+
+ if (ret < 0) {
+ for (; graph->filter_count > 0; graph->filter_count--)
+ avfilter_free(graph->filters[graph->filter_count - 1]);
+ av_freep(&graph->filters);
+ }
return ret;
}