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| author | Anssi Hannula <anssi.hannula@iki.fi> | 2011-10-28 13:43:13 +0300 |
|---|---|---|
| committer | Anssi Hannula <anssi.hannula@iki.fi> | 2011-10-30 15:43:19 +0200 |
| commit | ab9c00b992c4d077815ccaf981b58f2ee3c9a00c (patch) | |
| tree | 9be7efe1170cc725398d9a2007c4747e76a4351d | |
| parent | 3c32a941b76a88f385c794823ee2c45e82ea1737 (diff) | |
| download | ffmpeg-ab9c00b992c4d077815ccaf981b58f2ee3c9a00c.tar.gz | |
spdifenc: use special alignment for DTS-HD length_code
Align IEC 61937 length_code for DTS-HD so that
(length_code & 0xf) == 0x8. This is reportedly needed with some
receivers.
Signed-off-by: Anssi Hannula <anssi.hannula@iki.fi>
| -rw-r--r-- | libavformat/spdifenc.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/libavformat/spdifenc.c b/libavformat/spdifenc.c index 53aa27c446..05b3879d45 100644 --- a/libavformat/spdifenc.c +++ b/libavformat/spdifenc.c @@ -220,7 +220,10 @@ static int spdif_header_dts4(AVFormatContext *s, AVPacket *pkt, int core_size, } ctx->out_bytes = sizeof(dtshd_start_code) + 2 + pkt_size; - ctx->length_code = ctx->out_bytes; + + /* Align so that (length_code & 0xf) == 0x8. This is reportedly needed + * with some receivers, but the exact requirement is unconfirmed. */ + ctx->length_code = FFALIGN(ctx->out_bytes + 0x8, 0x10) - 0x8; av_fast_malloc(&ctx->hd_buf, &ctx->hd_buf_size, ctx->out_bytes); if (!ctx->hd_buf) |