Currently, the amount of padding inserted at the beginning by some audio encoders, is exported through AVCodecContext.delay. However - the term 'delay' is heavily overloaded and can have multiple different meanings even in the case of audio encoding. - this field has entirely different meanings, depending on whether the codec context is used for encoding or decoding (and has yet another different meaning for video), preventing generic handling of the codec context. Therefore, add a new field -- AVCodecContext.initial_padding. It could conceivably be used for decoding as well at a later point.
Showing the changes to libavcodec/audio_frame_queue.c (1 of 22 files). Show all
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| @@ -29,8 +29,8 @@ av_cold void ff_af_queue_init(AVCodecContext *avctx, AudioFrameQueue *afq) · 28 unmodified lines | ||
| 29 | 29 | { |
| 30 | 30 | afq->avctx = avctx; |
| 31 | 31 | afq->next_pts = AV_NOPTS_VALUE; |
| 32 | − afq->remaining_delay = avctx->delay; | |
| 33 | − afq->remaining_samples = avctx->delay; | |
| 32 | + afq->remaining_delay = avctx->initial_padding; | |
| 33 | + afq->remaining_samples = avctx->initial_padding; | |
| 34 | 34 | afq->frame_queue = NULL; |
| 35 | 35 | } |
| 36 | 36 | |