Merge commit '03afb62e83516141ba999536fc97575faefb98af'

* commit '03afb62e83516141ba999536fc97575faefb98af':
  libvpxenc: export CPB props side data

Merged-by: Hendrik Leppkes <h.leppkes@gmail.com>

libavcodec/libvpxenc.c

@@ -375,6 +375,7 @@ static av_cold int vpx_init(AVCodecContext *avctx,
     struct vpx_codec_enc_cfg enccfg = { 0 };
     struct vpx_codec_enc_cfg enccfg_alpha;
     vpx_codec_flags_t flags = (avctx->flags & AV_CODEC_FLAG_PSNR) ? VPX_CODEC_USE_PSNR : 0;
+    AVCPBProperties *cpb_props;
     int res;
     vpx_img_fmt_t img_fmt = VPX_IMG_FMT_I420;
 #if CONFIG_LIBVPX_VP9_ENCODER
@@ -631,6 +632,18 @@ static av_cold int vpx_init(AVCodecContext *avctx,
         vpx_img_wrap(&ctx->rawimg_alpha, VPX_IMG_FMT_I420, avctx->width, avctx->height, 1,
                      (unsigned char*)1);
 
+    cpb_props = ff_add_cpb_side_data(avctx);
+    if (!cpb_props)
+        return AVERROR(ENOMEM);
+
+    if (enccfg.rc_end_usage == VPX_CBR ||
+        enccfg.g_pass != VPX_RC_ONE_PASS) {
+        cpb_props->max_bitrate = avctx->rc_max_rate;
+        cpb_props->min_bitrate = avctx->rc_min_rate;
+        cpb_props->avg_bitrate = avctx->bit_rate;
+    }
+    cpb_props->buffer_size = avctx->rc_buffer_size;
+
     return 0;
 }