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);
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);
}
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);
}
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;