Only works if packed headers are supported, where we can know the
output before generating the first frame.
---
If this is wanted when packed headers aren't supported, we will need a
different approach because we can't know what the output will be until the
first frame is written.
libavcodec/vaapi_encode.c | 21 +++++++++++++++++++++
1 file changed, 21 insertions(+)
diff --git a/libavcodec/vaapi_encode.c b/libavcodec/vaapi_encode.c
index b600a00..d0afb10 100644
--- a/libavcodec/vaapi_encode.c
+++ b/libavcodec/vaapi_encode.c
@@ -1399,6 +1399,27 @@ av_cold int ff_vaapi_encode_init(AVCodecContext *avctx)
// where it actually overlaps properly, though.)
ctx->issue_mode = ISSUE_MODE_MAXIMISE_THROUGHPUT;
+ if (ctx->va_packed_headers & VA_ENC_PACKED_HEADER_SEQUENCE &&
+ ctx->codec->write_sequence_header) {
+ char data[MAX_PARAM_BUFFER_SIZE];
+ size_t bit_len = 8 * sizeof(data);
+
+ err = ctx->codec->write_sequence_header(avctx, data, &bit_len);
+ if (err < 0) {
+ av_log(avctx, AV_LOG_ERROR, "Failed to write sequence header "
+ "for extradata: %d.\n", err);
+ // Don't write extradata.
+ } else {
+ avctx->extradata_size = bit_len / 8;
+ avctx->extradata = av_mallocz(avctx->extradata_size);
+ if (avctx->extradata) {
+ memcpy(avctx->extradata, data, avctx->extradata_size);
+ } else {
+ avctx->extradata_size = 0;
+ }
+ }
+ }
+
return 0;
fail:
--
2.9.3
_______________________________________________
libav-devel mailing list
libav-devel@libav.org
https://lists.libav.org/mailman/listinfo/libav-devel
