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Split openLinks linked list into openInputs and openOutputs 

Commited in SoC by Vitor Sessak on 2008-05-24 17:20:09

Originally committed as revision 13360 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Vitor Sessak 2008-05-24 20:42:34 +00:00
parent 64fbf5e263
commit e2b5fdaf11
2 changed files with 23 additions and 41 deletions
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55
libavfilter/graphparser.c
View File

@ -212,7 +212,7 @@ static void insert_inout(AVFilterInOut **inouts, AVFilterInOut *element)
static int link_filter_inouts(AVFilterContext *filter,
AVFilterInOut **currInputs,
AVFilterInOut **openLinks, AVClass *log_ctx)
AVFilterInOut **openInputs, AVClass *log_ctx)
{
int pad = filter->input_count;
@ -249,7 +249,6 @@ static int link_filter_inouts(AVFilterContext *filter,
pad = filter->output_count;
while(pad--) {
AVFilterInOut *currlinkn = av_mallocz(sizeof(AVFilterInOut));
currlinkn->type = LinkTypeOut;
currlinkn->filter = filter;
currlinkn->pad_idx = pad;
insert_inout(currInputs, currlinkn);
@ -259,7 +258,7 @@ static int link_filter_inouts(AVFilterContext *filter,
}
static int parse_inputs(const char **buf, AVFilterInOut **currInputs,
AVFilterInOut **openLinks, AVClass *log_ctx)
AVFilterInOut **openOutputs, AVClass *log_ctx)
{
int pad = 0;
@ -270,23 +269,15 @@ static int parse_inputs(const char **buf, AVFilterInOut **currInputs,
if(!name)
return -1;
/* First check if the label is not in the openLinks list */
match = extract_inout(name, openLinks);
/* First check if the label is not in the openOutputs list */
match = extract_inout(name, openOutputs);
if(match) {
/* A label of a open link. Make it one of the inputs of the next
filter */
if(match->type != LinkTypeOut) {
av_log(log_ctx, AV_LOG_ERROR,
"Label \"%s\" appears twice as input!\n", match->name);
return -1;
}
av_free(name);
} else {
/* Not in the list, so add it as an input */
match = av_mallocz(sizeof(AVFilterInOut));
match->name = name;
match->type = LinkTypeIn;
match->pad_idx = pad;
}
@ -300,7 +291,8 @@ static int parse_inputs(const char **buf, AVFilterInOut **currInputs,
}
static int parse_outputs(const char **buf, AVFilterInOut **currInputs,
AVFilterInOut **openLinks, AVClass *log_ctx)
AVFilterInOut **openInputs,
AVFilterInOut **openOutputs, AVClass *log_ctx)
{
int pad = 0;
@ -314,17 +306,10 @@ static int parse_outputs(const char **buf, AVFilterInOut **currInputs,
if(!name)
return -1;
/* First check if the label is not in the openLinks list */
match = extract_inout(name, openLinks);
/* First check if the label is not in the openInputs list */
match = extract_inout(name, openInputs);
if(match) {
/* A label of a open link. Link it. */
if(match->type != LinkTypeIn) {
av_log(log_ctx, AV_LOG_ERROR,
"Label \"%s\" appears twice as output!\n", match->name);
return -1;
}
if(link_filter(input->filter, input->pad_idx,
match->filter, match->pad_idx, log_ctx) < 0)
return -1;
@ -333,9 +318,7 @@ static int parse_outputs(const char **buf, AVFilterInOut **currInputs,
av_free(match);
av_free(input);
} else {
/* Not in the list, so add the first input as a openLink */
input->next = *openLinks;
input->type = LinkTypeOut;
/* Not in the list, so add the first input as a openOutput */
input->name = name;
insert_inout(openOutputs, input);
}
@ -347,7 +330,8 @@ static int parse_outputs(const char **buf, AVFilterInOut **currInputs,
}
int avfilter_parse_graph(AVFilterGraph *graph, const char *filters,
AVFilterInOut *openLinks, AVClass *log_ctx)
AVFilterInOut *openInputs,
AVFilterInOut *openOutputs, AVClass *log_ctx)
{
int index = 0;
char chr = 0;
@ -358,7 +342,7 @@ int avfilter_parse_graph(AVFilterGraph *graph, const char *filters,
AVFilterContext *filter;
filters += consume_whitespace(filters);
if(parse_inputs(&filters, &currInputs, &openLinks, log_ctx) < 0)
if(parse_inputs(&filters, &currInputs, &openOutputs, log_ctx) < 0)
goto fail;
filter = parse_filter(&filters, graph, index, log_ctx);
@ -369,14 +353,15 @@ int avfilter_parse_graph(AVFilterGraph *graph, const char *filters,
if(filter->input_count == 1 && !currInputs && !index) {
/* First input can be ommitted if it is "[in]" */
const char *tmp = "[in]";
if(parse_inputs(&tmp, &currInputs, &openLinks, log_ctx))
if(parse_inputs(&tmp, &currInputs, &openOutputs, log_ctx) < 0)
goto fail;
}
if(link_filter_inouts(filter, &currInputs, &openLinks, log_ctx) < 0)
if(link_filter_inouts(filter, &currInputs, &openInputs, log_ctx) < 0)
goto fail;
if(parse_outputs(&filters, &currInputs, &openLinks, log_ctx))
if(parse_outputs(&filters, &currInputs, &openInputs, &openOutputs,
log_ctx) < 0)
goto fail;
filters += consume_whitespace(filters);
@ -391,10 +376,11 @@ int avfilter_parse_graph(AVFilterGraph *graph, const char *filters,
index++;
} while(chr == ',' || chr == ';');
if(openLinks && !strcmp(openLinks->name, "out") && currInputs) {
if(openInputs && !strcmp(openInputs->name, "out") && currInputs) {
/* Last output can be ommitted if it is "[out]" */
const char *tmp = "[out]";
if(parse_outputs(&tmp, &currInputs, &openLinks, log_ctx) < 0)
if(parse_outputs(&tmp, &currInputs, &openInputs,
&openOutputs, log_ctx) < 0)
goto fail;
}
@ -402,7 +388,8 @@ int avfilter_parse_graph(AVFilterGraph *graph, const char *filters,
fail:
avfilter_destroy_graph(graph);
free_inout(openLinks);
free_inout(openInputs);
free_inout(openOutputs);
free_inout(currInputs);
return -1;
}

9
libavfilter/graphparser.h
View File

@ -25,16 +25,10 @@
#include "avfilter.h"
#include "avfiltergraph.h"
enum LinkType {
LinkTypeIn,
LinkTypeOut,
};
/**
* A linked-list of the inputs/outputs of the filter chain.
*/
typedef struct AVFilterInOut {
enum LinkType type;
const char *name;
AVFilterContext *filter;
int pad_idx;
@ -51,6 +45,7 @@ typedef struct AVFilterInOut {
* @return zero on success, -1 on error
*/
int avfilter_parse_graph(AVFilterGraph *graph, const char *filters,
AVFilterInOut *inouts, AVClass *log_ctx);
AVFilterInOut *inputs, AVFilterInOut *outputs,
AVClass *log_ctx);
#endif /* FFMPEG_GRAPHPARSER_H */