diff --git a/libavfilter/audio.c b/libavfilter/audio.c index a18be89293..5996f607b2 100644 --- a/libavfilter/audio.c +++ b/libavfilter/audio.c @@ -27,6 +27,9 @@ #include "avfilter.h" #include "internal.h" +#define BUFFER_ALIGN 0 + + AVFrame *ff_null_get_audio_buffer(AVFilterLink *link, int nb_samples) { return ff_get_audio_buffer(link->dst->outputs[0], nb_samples); @@ -34,29 +37,48 @@ AVFrame *ff_null_get_audio_buffer(AVFilterLink *link, int nb_samples) AVFrame *ff_default_get_audio_buffer(AVFilterLink *link, int nb_samples) { - AVFrame *frame = av_frame_alloc(); + AVFrame *frame = NULL; int channels = link->channels; - int ret; av_assert0(channels == av_get_channel_layout_nb_channels(link->channel_layout) || !av_get_channel_layout_nb_channels(link->channel_layout)); + if (!link->frame_pool) { + link->frame_pool = ff_frame_pool_audio_init(av_buffer_allocz, channels, + nb_samples, link->format, BUFFER_ALIGN); + if (!link->frame_pool) + return NULL; + } else { + int pool_channels = 0; + int pool_nb_samples = 0; + int pool_align = 0; + enum AVSampleFormat pool_format = AV_SAMPLE_FMT_NONE; + + if (ff_frame_pool_get_audio_config(link->frame_pool, + &pool_channels, &pool_nb_samples, + &pool_format, &pool_align) < 0) { + return NULL; + } + + if (pool_channels != channels || pool_nb_samples < nb_samples || + pool_format != link->format || pool_align != BUFFER_ALIGN) { + + ff_frame_pool_uninit((FFFramePool **)&link->frame_pool); + link->frame_pool = ff_frame_pool_audio_init(av_buffer_allocz, channels, + nb_samples, link->format, BUFFER_ALIGN); + if (!link->frame_pool) + return NULL; + } + } + + frame = ff_frame_pool_get(link->frame_pool); if (!frame) return NULL; - frame->nb_samples = nb_samples; - frame->format = link->format; - av_frame_set_channels(frame, link->channels); + frame->nb_samples = nb_samples; frame->channel_layout = link->channel_layout; - frame->sample_rate = link->sample_rate; - ret = av_frame_get_buffer(frame, 0); - if (ret < 0) { - av_frame_free(&frame); - return NULL; - } - - av_samples_set_silence(frame->extended_data, 0, nb_samples, channels, - link->format); + frame->sample_rate = link->sample_rate; + av_samples_set_silence(frame->extended_data, 0, nb_samples, channels, link->format); return frame; }