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avfiltergraph: make the AVFilterInOut alloc/free API public

Browse Source 
This is required for letting applications to create and destroy
AVFilterInOut structs in a convenient way.

Signed-off-by: Anton Khirnov <anton@khirnov.net>
This commit is contained in:
Stefano Sabatini 2011-06-11 15:30:46 +02:00 committed by Anton Khirnov
parent 12e7e1d03e
commit 91d3cbe0fd
6 changed files with 42 additions and 20 deletions
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4
avconv.c
View File

@ -592,8 +592,8 @@ static int configure_video_filters(InputStream *ist, OutputStream *ost)
ost->graph->scale_sws_opts = av_strdup(args);
if (ost->avfilter) {
AVFilterInOut *outputs = av_malloc(sizeof(AVFilterInOut));
AVFilterInOut *inputs = av_malloc(sizeof(AVFilterInOut));
AVFilterInOut *outputs = avfilter_inout_alloc();
AVFilterInOut *inputs = avfilter_inout_alloc();
outputs->name = av_strdup("in");
outputs->filter_ctx = last_filter;

4
avplay.c
View File

@ -1716,8 +1716,8 @@ static int configure_video_filters(AVFilterGraph *graph, VideoState *is, const c
return ret;
if (vfilters) {
AVFilterInOut *outputs = av_malloc(sizeof(AVFilterInOut));
AVFilterInOut *inputs = av_malloc(sizeof(AVFilterInOut));
AVFilterInOut *outputs = avfilter_inout_alloc();
AVFilterInOut *inputs = avfilter_inout_alloc();
outputs->name = av_strdup("in");
outputs->filter_ctx = filt_src;

4
doc/APIchanges
View File

@ -12,6 +12,10 @@ libavutil: 2011-04-18
API changes, most recent first:
2012-xx-xx - xxxxxxx - lavfi 2.16.0 - avfiltergraph.h
Add avfilter_graph_parse2(), avfilter_inout_alloc() and
avfilter_inout_free() functions.
2012-xx-xx - xxxxxxx - lavu 51.27.0 - samplefmt.h
Add av_get_packed_sample_fmt() and av_get_planar_sample_fmt()

13
libavfilter/avfiltergraph.h
View File

@ -111,6 +111,19 @@ typedef struct AVFilterInOut {
struct AVFilterInOut *next;
} AVFilterInOut;
/**
* Allocate a single AVFilterInOut entry.
* Must be freed with avfilter_inout_free().
* @return allocated AVFilterInOut on success, NULL on failure.
*/
AVFilterInOut *avfilter_inout_alloc(void);
/**
* Free the supplied list of AVFilterInOut and set *inout to NULL.
* If *inout is NULL, do nothing.
*/
void avfilter_inout_free(AVFilterInOut **inout);
/**
* Add a graph described by a string to a graph.
*

35
libavfilter/graphparser.c
View File

@ -170,13 +170,18 @@ static int parse_filter(AVFilterContext **filt_ctx, const char **buf, AVFilterGr
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;
}
}
@ -431,9 +436,9 @@ int avfilter_graph_parse2(AVFilterGraph *graph, const char *filters,
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);
avfilter_inout_free(&open_inputs);
avfilter_inout_free(&open_outputs);
avfilter_inout_free(&curr_inputs);
*inputs = NULL;
*outputs = NULL;
@ -467,7 +472,7 @@ int avfilter_graph_parse(AVFilterGraph *graph, const char *filters,
continue;
ret = avfilter_link(match->filter_ctx, match->pad_idx,
cur->filter_ctx, cur->pad_idx);
free_inout(match);
avfilter_inout_free(&match);
if (ret < 0)
goto fail;
}
@ -487,7 +492,7 @@ int avfilter_graph_parse(AVFilterGraph *graph, const char *filters,
continue;
ret = avfilter_link(cur->filter_ctx, cur->pad_idx,
match->filter_ctx, match->pad_idx);
free_inout(match);
avfilter_inout_free(&match);
if (ret < 0)
goto fail;
}
@ -498,9 +503,9 @@ int avfilter_graph_parse(AVFilterGraph *graph, const char *filters,
avfilter_free(graph->filters[graph->filter_count - 1]);
av_freep(&graph->filters);
}
free_inout(inputs);
free_inout(outputs);
free_inout(open_inputs);
free_inout(open_outputs);
avfilter_inout_free(&inputs);
avfilter_inout_free(&outputs);
avfilter_inout_free(&open_inputs);
avfilter_inout_free(&open_outputs);
return ret;
}

2
libavfilter/version.h
View File

@ -29,7 +29,7 @@
#include "libavutil/avutil.h"
#define LIBAVFILTER_VERSION_MAJOR 2
#define LIBAVFILTER_VERSION_MINOR 15
#define LIBAVFILTER_VERSION_MINOR 16
#define LIBAVFILTER_VERSION_MICRO 0
#define LIBAVFILTER_VERSION_INT AV_VERSION_INT(LIBAVFILTER_VERSION_MAJOR, \