Function avcodec_default_get_buffer2

libavcodec/get_buffer.c:253–291

}

int avcodec_default_get_buffer2(AVCodecContext *avctx, AVFrame *frame, int flags)
{
    int ret;

    if (avctx->hw_frames_ctx) {
        ret = av_hwframe_get_buffer(avctx->hw_frames_ctx, frame, 0);
        if (ret == AVERROR(ENOMEM)) {
            AVHWFramesContext *frames_ctx =
                (AVHWFramesContext*)avctx->hw_frames_ctx->data;
            if (frames_ctx->initial_pool_size > 0 &&
                !avctx->internal->warned_on_failed_allocation_from_fixed_pool) {
                av_log(avctx, AV_LOG_WARNING, "Failed to allocate a %s/%s "
                       "frame from a fixed pool of hardware frames.\n",
                       av_get_pix_fmt_name(frames_ctx->format),
                       av_get_pix_fmt_name(frames_ctx->sw_format));
                av_log(avctx, AV_LOG_WARNING, "Consider setting "
                       "extra_hw_frames to a larger value "
                       "(currently set to %d, giving a pool size of %d).\n",
                       avctx->extra_hw_frames, frames_ctx->initial_pool_size);
                avctx->internal->warned_on_failed_allocation_from_fixed_pool = 1;
            }
        }
        frame->width  = avctx->coded_width;
        frame->height = avctx->coded_height;
        return ret;
    }

    if ((ret = update_frame_pool(avctx, frame)) < 0)
        return ret;

    switch (avctx->codec_type) {
    case AVMEDIA_TYPE_VIDEO:
        return video_get_buffer(avctx, frame);
    case AVMEDIA_TYPE_AUDIO:
        return audio_get_buffer(avctx, frame);
    default:
        return -1;
    }
}