-/**
- * Get the number of samples of an audio frame. Return -1 on error.
- */
-int ff_get_audio_frame_size(AVCodecContext *enc, int size, int mux)
-{
- int frame_size;
-
- if ((frame_size = av_get_audio_frame_duration(enc, size)) > 0)
- return frame_size;
-
- //For WMA we currently have no other means to calculate duration thus we
- //do it here by assuming CBR, which is true for all known cases.
- if (!mux && enc->bit_rate>0 && size>0 && enc->sample_rate>0 && enc->block_align>1) {
- if (enc->codec_id == AV_CODEC_ID_WMAV1 || enc->codec_id == AV_CODEC_ID_WMAV2)
- return ((int64_t)size * 8 * enc->sample_rate) / enc->bit_rate;
- }
-
- return -1;
-}
-