diff options
Diffstat (limited to 'libavformat/rawenc.c')
| -rw-r--r-- | libavformat/rawenc.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/libavformat/rawenc.c b/libavformat/rawenc.c index e59f1ae95e..d65c7c7909 100644 --- a/libavformat/rawenc.c +++ b/libavformat/rawenc.c @@ -56,6 +56,25 @@ AVOutputFormat ff_ac3_muxer = { #endif #if CONFIG_ADX_MUXER + +static int adx_write_trailer(AVFormatContext *s) +{ + AVIOContext *pb = s->pb; + AVCodecContext *avctx = s->streams[0]->codec; + + if (pb->seekable) { + int64_t file_size = avio_tell(pb); + uint64_t sample_count = (file_size - 36) / avctx->channels / 18 * 32; + if (sample_count <= UINT32_MAX) { + avio_seek(pb, 12, SEEK_SET); + avio_wb32(pb, sample_count); + avio_seek(pb, file_size, SEEK_SET); + } + } + + return 0; +} + AVOutputFormat ff_adx_muxer = { .name = "adx", .long_name = NULL_IF_CONFIG_SMALL("CRI ADX"), @@ -64,6 +83,7 @@ AVOutputFormat ff_adx_muxer = { .video_codec = AV_CODEC_ID_NONE, .write_header = force_one_stream, .write_packet = ff_raw_write_packet, + .write_trailer = adx_write_trailer, .flags = AVFMT_NOTIMESTAMPS, }; #endif |