/* AVOptions: */
int dtshd_rate;
int dtshd_fallback;
+#define SPDIF_FLAG_BIGENDIAN 0x01
+ int spdif_flags;
/// function, which generates codec dependent header information.
/// Sets data_type and pkt_offset, and length_code, out_bytes, out_buf if necessary
} IEC61937Context;
static const AVOption options[] = {
+{ "spdif_flags", "IEC 61937 encapsulation flags", offsetof(IEC61937Context, spdif_flags), FF_OPT_TYPE_FLAGS, 0, 0, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, "spdif_flags" },
+{ "be", "output in big-endian format (for use as s16be)", 0, FF_OPT_TYPE_CONST, SPDIF_FLAG_BIGENDIAN, 0, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, "spdif_flags" },
{ "dtshd_rate", "mux complete DTS frames in HD mode at the specified IEC958 rate (in Hz, default 0=disabled)", offsetof(IEC61937Context, dtshd_rate), FF_OPT_TYPE_INT, 0, 0, 768000, AV_OPT_FLAG_ENCODING_PARAM },
{ "dtshd_fallback_time", "min secs to strip HD for after an overflow (-1: till the end, default 60)", offsetof(IEC61937Context, dtshd_fallback), FF_OPT_TYPE_INT, 60, -1, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM },
{ NULL },
return 0;
}
+static av_always_inline void spdif_put_16(IEC61937Context *ctx,
+ ByteIOContext *pb, unsigned int val)
+{
+ if (ctx->spdif_flags & SPDIF_FLAG_BIGENDIAN)
+ put_be16(pb, val);
+ else
+ put_le16(pb, val);
+}
+
static int spdif_write_packet(struct AVFormatContext *s, AVPacket *pkt)
{
IEC61937Context *ctx = s->priv_data;
}
if (ctx->use_preamble) {
- put_le16(s->pb, SYNCWORD1); //Pa
- put_le16(s->pb, SYNCWORD2); //Pb
- put_le16(s->pb, ctx->data_type); //Pc
- put_le16(s->pb, ctx->length_code);//Pd
+ spdif_put_16(ctx, s->pb, SYNCWORD1); //Pa
+ spdif_put_16(ctx, s->pb, SYNCWORD2); //Pb
+ spdif_put_16(ctx, s->pb, ctx->data_type); //Pc
+ spdif_put_16(ctx, s->pb, ctx->length_code);//Pd
}
- if (HAVE_BIGENDIAN ^ ctx->extra_bswap) {
+ if (ctx->extra_bswap ^ (ctx->spdif_flags & SPDIF_FLAG_BIGENDIAN)) {
put_buffer(s->pb, ctx->out_buf, ctx->out_bytes & ~1);
} else {
av_fast_malloc(&ctx->buffer, &ctx->buffer_size, ctx->out_bytes + FF_INPUT_BUFFER_PADDING_SIZE);
put_buffer(s->pb, ctx->buffer, ctx->out_bytes & ~1);
}
+ /* a final lone byte has to be MSB aligned */
if (ctx->out_bytes & 1)
- put_be16(s->pb, ctx->out_buf[ctx->out_bytes - 1]);
+ spdif_put_16(ctx, s->pb, ctx->out_buf[ctx->out_bytes - 1] << 8);
put_nbyte(s->pb, 0, padding);