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Make configure_filters() return a meaningful error code rather than 

always -1.

Originally committed as revision 24903 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Stefano Sabatini 2010-08-24 15:48:11 +00:00
parent b3c1652b82
commit 4ddf0d2915
1 changed files with 31 additions and 32 deletions
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63
ffmpeg.c
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@ -407,20 +407,21 @@ static int configure_filters(AVInputStream *ist, AVOutputStream *ost)
AVCodecContext *codec = ost->st->codec;
AVCodecContext *icodec = ist->st->codec;
char args[255];
int ret;
graph = av_mallocz(sizeof(AVFilterGraph));
if (avfilter_open(&ist->input_video_filter, avfilter_get_by_name("buffer"), "src") < 0)
return -1;
if (avfilter_open(&ist->out_video_filter, &output_filter, "out") < 0)
return -1;
if ((ret = avfilter_open(&ist->input_video_filter, avfilter_get_by_name("buffer"), "src")) < 0)
return ret;
if ((ret = avfilter_open(&ist->out_video_filter, &output_filter, "out")) < 0)
return ret;
snprintf(args, 255, "%d:%d:%d", ist->st->codec->width,
ist->st->codec->height, ist->st->codec->pix_fmt);
if (avfilter_init_filter(ist->input_video_filter, args, NULL))
return -1;
if (avfilter_init_filter(ist->out_video_filter, NULL, &codec->pix_fmt))
return -1;
if ((ret = avfilter_init_filter(ist->input_video_filter, args, NULL)) < 0)
return ret;
if ((ret = avfilter_init_filter(ist->out_video_filter, NULL, &codec->pix_fmt)) < 0)
return ret;
/* add input and output filters to the overall graph */
avfilter_graph_add_filter(graph, ist->input_video_filter);
@ -432,13 +433,12 @@ static int configure_filters(AVInputStream *ist, AVOutputStream *ost)
snprintf(args, 255, "%d:%d:%d:%d", ost->leftBand, ost->topBand,
codec->width,
codec->height);
avfilter_open(&filter, avfilter_get_by_name("crop"), NULL);
if (!filter)
return -1;
if (avfilter_init_filter(filter, args, NULL))
return -1;
if (avfilter_link(last_filter, 0, filter, 0))
return -1;
if ((ret = avfilter_open(&filter, avfilter_get_by_name("crop"), NULL)) < 0)
return ret;
if ((ret = avfilter_init_filter(filter, args, NULL)) < 0)
return ret;
if ((ret = avfilter_link(last_filter, 0, filter, 0)) < 0)
return ret;
last_filter = filter;
avfilter_graph_add_filter(graph, last_filter);
}
@ -450,13 +450,12 @@ static int configure_filters(AVInputStream *ist, AVOutputStream *ost)
codec->width,
codec->height,
(int)av_get_int(sws_opts, "sws_flags", NULL));
avfilter_open(&filter, avfilter_get_by_name("scale"), NULL);
if (!filter)
return -1;
if (avfilter_init_filter(filter, args, NULL))
return -1;
if (avfilter_link(last_filter, 0, filter, 0))
return -1;
if ((ret = avfilter_open(&filter, avfilter_get_by_name("scale"), NULL)) < 0)
return ret;
if ((ret = avfilter_init_filter(filter, args, NULL)) < 0)
return ret;
if ((ret = avfilter_link(last_filter, 0, filter, 0)) < 0)
return ret;
last_filter = filter;
avfilter_graph_add_filter(graph, last_filter);
}
@ -478,21 +477,21 @@ static int configure_filters(AVInputStream *ist, AVOutputStream *ost)
inputs->pad_idx = 0;
inputs->next = NULL;
if (avfilter_graph_parse(graph, vfilters, inputs, outputs, NULL) < 0)
return -1;
if ((ret = avfilter_graph_parse(graph, vfilters, inputs, outputs, NULL)) < 0)
return ret;
av_freep(&vfilters);
} else {
if (avfilter_link(last_filter, 0, ist->out_video_filter, 0) < 0)
return -1;
if ((ret = avfilter_link(last_filter, 0, ist->out_video_filter, 0)) < 0)
return ret;
}
/* configure all the filter links */
if (avfilter_graph_check_validity(graph, NULL))
return -1;
if (avfilter_graph_config_formats(graph, NULL))
return -1;
if (avfilter_graph_config_links(graph, NULL))
return -1;
if ((ret = avfilter_graph_check_validity(graph, NULL)) < 0)
return ret;
if ((ret = avfilter_graph_config_formats(graph, NULL)) < 0)
return ret;
if ((ret = avfilter_graph_config_links(graph, NULL)) < 0)
return ret;
codec->width = ist->out_video_filter->inputs[0]->w;
codec->height = ist->out_video_filter->inputs[0]->h;