avcodec/libx265: apply lavc maxrate, bufsize & rc_init_occupancy

CLI options -maxrate, -bufsize and -rc_init_occupancy can now be picked
up by the x265 wrapper.  Min. rc init has to be 1001 to avoid x265
setting it to vbv-bufsize.

1 files changed, 8 insertions, 0 deletions

diff --git a/libavcodec/libx265.c b/libavcodec/libx265.c
index bb457dfe5a..27c90b323f 100644
--- a/libavcodec/libx265.c
+++ b/libavcodec/libx265.c
@@ -205,6 +205,9 @@ static av_cold int libx265_encode_init(AVCodecContext *avctx)
         ctx->params->rc.rateControlMode = X265_RC_ABR;
     }
 
+    ctx->params->rc.vbvBufferSize = avctx->rc_buffer_size / 1000;
+    ctx->params->rc.vbvMaxBitrate = avctx->rc_max_rate    / 1000;
+
     if (!(avctx->flags & AV_CODEC_FLAG_GLOBAL_HEADER))
         ctx->params->bRepeatHeaders = 1;
 
@@ -233,6 +236,11 @@ static av_cold int libx265_encode_init(AVCodecContext *avctx)
         }
     }
 
+    if (ctx->params->rc.vbvBufferSize && avctx->rc_initial_buffer_occupancy > 1000 &&
+        ctx->params->rc.vbvBufferInit == 0.9) {
+        ctx->params->rc.vbvBufferInit = (float)avctx->rc_initial_buffer_occupancy / 1000;
+    }
+
     if (ctx->profile) {
         if (ctx->api->param_apply_profile(ctx->params, ctx->profile) < 0) {
             int i;