static int compat_decode(AVCodecContext *avctx, AVFrame *frame, int *got_frame, const AVPacket *pkt) { AVCodecInternal *avci = avctx->internal; int ret; av_assert0(avci->compat_decode_consumed == 0); *got_frame = 0; avci->compat_decode = 1; if (avci->compat_decode_partial_size > 0 && avci->compat_decode_partial_size != pkt->size) { av_log(avctx, AV_LOG_ERROR, "Got unexpected packet size after a partial decode\n"); ret = AVERROR(EINVAL); goto finish; } if (!avci->compat_decode_partial_size) { ret = avcodec_send_packet(avctx, pkt); if (ret == AVERROR_EOF) ret = 0; else if (ret == AVERROR(EAGAIN)) { /* we fully drain all the output in each decode call, so this should not * ever happen */ ret = AVERROR_BUG; goto finish; } else if (ret < 0) goto finish; } while (ret >= 0) { ret = avcodec_receive_frame(avctx, frame); if (ret < 0) { if (ret == AVERROR(EAGAIN) || ret == AVERROR_EOF) ret = 0; goto finish; } if (frame != avci->compat_decode_frame) { if (!avctx->refcounted_frames) { ret = unrefcount_frame(avci, frame); if (ret < 0) goto finish; } *got_frame = 1; frame = avci->compat_decode_frame; } else { if (!avci->compat_decode_warned) { av_log(avctx, AV_LOG_WARNING, "The deprecated avcodec_decode_* " "API cannot return all the frames for this decoder. " "Some frames will be dropped. Update your code to the " "new decoding API to fix this.\n"); avci->compat_decode_warned = 1; } } if (avci->draining || (!avctx->codec->bsfs && avci->compat_decode_consumed < pkt->size)) break; } finish: if (ret == 0) { /* if there are any bsfs then assume full packet is always consumed */ if (avctx->codec->bsfs) ret = pkt->size; else ret = FFMIN(avci->compat_decode_consumed, pkt->size); } avci->compat_decode_consumed = 0; avci->compat_decode_partial_size = (ret >= 0) ? pkt->size - ret : 0; return ret; }