On 15.12.2024 23:41, Michael Niedermayer wrote:
Hi Timo
On Thu, Dec 12, 2024 at 08:55:31PM +0100, Timo Rothenpieler wrote:
---
libavformat/flvenc.c | 96 ++++++++++++++++++++++----------------------
1 file changed, 47 insertions(+), 49 deletions(-)
diff --git a/libavformat/flvenc.c b/libavformat/flvenc.c
index 21e2bca5be..fbe5416353 100644
--- a/libavformat/flvenc.c
+++ b/libavformat/flvenc.c
@@ -493,6 +493,45 @@ static void write_metadata(AVFormatContext *s, unsigned
int ts)
avio_wb32(pb, flv->metadata_totalsize + 11);
}
+static void write_codec_fourcc(AVIOContext *pb, enum AVCodecID codec_id)
+{
+ switch (codec_id) {
+ case AV_CODEC_ID_AAC:
+ avio_write(pb, "mp4a", 4);
+ return;
+ case AV_CODEC_ID_OPUS:
+ avio_write(pb, "Opus", 4);
+ return;
+ case AV_CODEC_ID_FLAC:
+ avio_write(pb, "fLaC", 4);
+ return;
+ case AV_CODEC_ID_MP3:
+ avio_write(pb, ".mp3", 4);
+ return;
+ case AV_CODEC_ID_AC3:
+ avio_write(pb, "ac-3", 4);
+ return;
+ case AV_CODEC_ID_EAC3:
+ avio_write(pb, "ec-3", 4);
+ return;
+ case AV_CODEC_ID_H264:
+ avio_write(pb, "avc1", 4);
+ return;
+ case AV_CODEC_ID_HEVC:
+ avio_write(pb, "hvc1", 4);
+ return;
+ case AV_CODEC_ID_AV1:
+ avio_write(pb, "av01", 4);
+ return;
+ case AV_CODEC_ID_VP9:
+ avio_write(pb, "vp09", 4);
+ return;
+ default:
+ av_log(NULL, AV_LOG_ERROR, "Invalid codec FourCC write requested.\n");
+ av_assert0(0);
+ }
+}
from the commit message i would have thought i would see something
similar to ff_codec_bmp_tags[]
such a table is more compact and can be used in both directions
I implemented it like this since it's in the hot path of the muxer, and
iterating over an array seems a bit unnecessary there.
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