static void pick_format(AVFilterLink *link)
{
if (!link || !link->in_formats)
return;
link->in_formats->format_count = 1;
link->format = link->in_formats->formats[0];
avfilter_formats_unref(&link->in_formats);
avfilter_formats_unref(&link->out_formats);
}
static int query_formats(AVFilterContext *ctx)
{
AVFilterFormats *formats;
enum PixelFormat pix_fmt;
int ret;
/** accept any input pixel format that is not hardware accelerated, not
* a bitstream format, and does not have vertically sub-sampled chroma */
if (ctx->inputs[0]) {
formats = NULL;
for (pix_fmt = 0; pix_fmt < PIX_FMT_NB; pix_fmt++)
if (!( av_pix_fmt_descriptors[pix_fmt].flags & PIX_FMT_HWACCEL
|| av_pix_fmt_descriptors[pix_fmt].flags & PIX_FMT_BITSTREAM)
&& av_pix_fmt_descriptors[pix_fmt].nb_components
&& !av_pix_fmt_descriptors[pix_fmt].log2_chroma_h
&& (ret = avfilter_add_format(&formats, pix_fmt)) < 0) {
avfilter_formats_unref(&formats);
return ret;
}
avfilter_formats_ref(formats, &ctx->inputs[0]->out_formats);
avfilter_formats_ref(formats, &ctx->outputs[0]->in_formats);
}
return 0;
}
void avfilter_free(AVFilterContext *filter)
{
int i;
AVFilterLink *link;
if (!filter)
return;
if (filter->filter->uninit)
filter->filter->uninit(filter);
for (i = 0; i < filter->input_count; i++) {
if ((link = filter->inputs[i])) {
if (link->src)
link->src->outputs[link->srcpad - link->src->output_pads] = NULL;
avfilter_formats_unref(&link->in_formats);
avfilter_formats_unref(&link->out_formats);
avfilter_formats_unref(&link->in_samplerates);
avfilter_formats_unref(&link->out_samplerates);
ff_channel_layouts_unref(&link->in_channel_layouts);
ff_channel_layouts_unref(&link->out_channel_layouts);
}
avfilter_link_free(&link);
}
for (i = 0; i < filter->output_count; i++) {
if ((link = filter->outputs[i])) {
if (link->dst)
link->dst->inputs[link->dstpad - link->dst->input_pads] = NULL;
avfilter_formats_unref(&link->in_formats);
avfilter_formats_unref(&link->out_formats);
avfilter_formats_unref(&link->in_samplerates);
avfilter_formats_unref(&link->out_samplerates);
ff_channel_layouts_unref(&link->in_channel_layouts);
ff_channel_layouts_unref(&link->out_channel_layouts);
}
avfilter_link_free(&link);
}
av_freep(&filter->name);
av_freep(&filter->input_pads);
av_freep(&filter->output_pads);
av_freep(&filter->inputs);
av_freep(&filter->outputs);
av_freep(&filter->priv);
while(filter->command_queue){
ff_command_queue_pop(filter);
}
av_free(filter);
}
static int pick_format(AVFilterLink *link)
{
if (!link || !link->in_formats)
return 0;
link->in_formats->format_count = 1;
link->format = link->in_formats->formats[0];
if (link->type == AVMEDIA_TYPE_AUDIO) {
if (!link->in_samplerates->format_count) {
av_log(link->src, AV_LOG_ERROR, "Cannot select sample rate for"
" the link between filters %s and %s.\n", link->src->name,
link->dst->name);
return AVERROR(EINVAL);
}
link->in_samplerates->format_count = 1;
link->sample_rate = link->in_samplerates->formats[0];
if (!link->in_channel_layouts->nb_channel_layouts) {
av_log(link->src, AV_LOG_ERROR, "Cannot select channel layout for"
"the link between filters %s and %s.\n", link->src->name,
link->dst->name);
return AVERROR(EINVAL);
}
link->in_channel_layouts->nb_channel_layouts = 1;
link->channel_layout = link->in_channel_layouts->channel_layouts[0];
}
avfilter_formats_unref(&link->in_formats);
avfilter_formats_unref(&link->out_formats);
avfilter_formats_unref(&link->in_samplerates);
avfilter_formats_unref(&link->out_samplerates);
ff_channel_layouts_unref(&link->in_channel_layouts);
ff_channel_layouts_unref(&link->out_channel_layouts);
return 0;
}
static void pick_format(AVFilterLink *link)
{
if (!link || !link->in_formats)
return;
link->in_formats->format_count = 1;
link->format = link->in_formats->formats[0];
avfilter_formats_unref(&link->in_formats);
avfilter_formats_unref(&link->out_formats);
if (link->type == AVMEDIA_TYPE_AUDIO) {
link->in_chlayouts->format_count = 1;
link->channel_layout = link->in_chlayouts->formats[0];
avfilter_formats_unref(&link->in_chlayouts);
avfilter_formats_unref(&link->out_chlayouts);
link->in_packing->format_count = 1;
link->planar = link->in_packing->formats[0] == AVFILTER_PLANAR;
avfilter_formats_unref(&link->in_packing);
avfilter_formats_unref(&link->out_packing);
}
}
