*/
static int link_filter(AVFilterContext *src, int srcpad,
AVFilterContext *dst, int dstpad,
- AVClass *log_ctx)
+ void *log_ctx)
{
int ret;
if ((ret = avfilter_link(src, srcpad, dst, dstpad))) {
* @return a pointer (that need to be freed after use) to the name
* between parenthesis
*/
-static char *parse_link_name(const char **buf, AVClass *log_ctx)
+static char *parse_link_name(const char **buf, void *log_ctx)
{
const char *start = *buf;
char *name;
* Create an instance of a filter, initialize and insert it in the
* filtergraph in *ctx.
*
+ * @param filt_ctx put here a filter context in case of successful creation and configuration, NULL otherwise.
* @param ctx the filtergraph context
- * @param put here a filter context in case of successful creation and configuration, NULL otherwise.
* @param index an index which is supposed to be unique for each filter instance added to the filtergraph
* @param filt_name the name of the filter to create
* @param args the arguments provided to the filter during its initialization
* @return 0 in case of success, a negative AVERROR code otherwise
*/
static int create_filter(AVFilterContext **filt_ctx, AVFilterGraph *ctx, int index,
- const char *filt_name, const char *args, AVClass *log_ctx)
+ const char *filt_name, const char *args, void *log_ctx)
{
AVFilter *filt;
char inst_name[30];
* corresponding filter instance which is added to graph with
* create_filter().
*
+ * @param filt_ctx Pointer that is set to the created and configured filter
+ * context on success, set to NULL on failure.
* @param filt_ctx put here a pointer to the created filter context on
* success, NULL otherwise
* @param buf pointer to the buffer to parse, *buf will be updated to
* @return 0 in case of success, a negative AVERROR code otherwise
*/
static int parse_filter(AVFilterContext **filt_ctx, const char **buf, AVFilterGraph *graph,
- int index, AVClass *log_ctx)
+ int index, void *log_ctx)
{
char *opts = NULL;
char *name = av_get_token(buf, "=,;[\n");
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;
}
}
static int link_filter_inouts(AVFilterContext *filt_ctx,
AVFilterInOut **curr_inputs,
- AVFilterInOut **open_inputs, AVClass *log_ctx)
+ AVFilterInOut **open_inputs, void *log_ctx)
{
int pad = filt_ctx->input_count, ret;
}
static int parse_inputs(const char **buf, AVFilterInOut **curr_inputs,
- AVFilterInOut **open_outputs, AVClass *log_ctx)
+ AVFilterInOut **open_outputs, void *log_ctx)
{
int pad = 0;
static int parse_outputs(const char **buf, AVFilterInOut **curr_inputs,
AVFilterInOut **open_inputs,
- AVFilterInOut **open_outputs, AVClass *log_ctx)
+ AVFilterInOut **open_outputs, void *log_ctx)
{
int ret, pad = 0;
}
int avfilter_graph_parse(AVFilterGraph *graph, const char *filters,
- AVFilterInOut *open_inputs,
- AVFilterInOut *open_outputs, AVClass *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;
}
projects / ffmpeg / blobdiff