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avfilter: Support both syntaxes for the scale filter

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This commit is contained in:
Luca Barbato 2015-09-10 17:05:56 +02:00 committed by Vittorio Giovara
parent c7247eb7fe
commit 285fe5b098
1 changed files with 38 additions and 5 deletions
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43
libavfilter/graphparser.c
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@ -81,6 +81,41 @@ static char *parse_link_name(const char **buf, void *log_ctx)
return name;
}
#define TMP_ARGS_SIZE 256
static void append_sws_flags(const char **args, const char *sws_opts, char *tmp)
{
int nb_opts = 0;
const char *separator = ":";
const char *opt = *args;
if (strstr(*args, "flags"))
return;
if (strstr(*args, "="))
separator = ":flags=";
while ((opt = strstr(opt, ":")) && *opt) {
av_log(NULL, AV_LOG_INFO, "opts '%s' \n", opt);
if (nb_opts > 2) {
return;
}
nb_opts++;
opt++;
}
opt = strstr(sws_opts, "flags=");
if (opt && strlen(opt) > 6)
opt += 6;
else
opt = sws_opts;
snprintf(tmp, TMP_ARGS_SIZE, "%s%s%s",
*args, separator, opt);
*args = tmp;
}
/**
* Create an instance of a filter, initialize and insert it in the
* filtergraph in *ctx.
@ -98,7 +133,7 @@ static int create_filter(AVFilterContext **filt_ctx, AVFilterGraph *ctx, int ind
{
AVFilter *filt;
char inst_name[30];
char tmp_args[256];
char tmp_args[TMP_ARGS_SIZE];
int ret;
snprintf(inst_name, sizeof(inst_name), "Parsed filter %d %s", index, filt_name);
@ -118,11 +153,9 @@ static int create_filter(AVFilterContext **filt_ctx, AVFilterGraph *ctx, int ind
return AVERROR(ENOMEM);
}
if (!strcmp(filt_name, "scale") && args && !strstr(args, "flags") &&
if (!strcmp(filt_name, "scale") && args &&
ctx->scale_sws_opts) {
snprintf(tmp_args, sizeof(tmp_args), "%s:%s",
args, ctx->scale_sws_opts);
args = tmp_args;
append_sws_flags(&args, ctx->scale_sws_opts, tmp_args);
}
ret = avfilter_init_str(*filt_ctx, args);