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Use ff_rm_codec_tags[] in RM muxer. This, incidentally, also allows muxing

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other audio codecs rather than only AC-3, so add some code that makes
word byte-swapping only happen for AC-3, not for all audio codecs.

Patch by Francesco Lavra <francescolavra interfree it>.

Originally committed as revision 23361 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Francesco Lavra 2010-05-28 18:21:25 +00:00 committed by Ronald S. Bultje
parent 74e8ccad4c
commit cff87f0404
1 changed files with 16 additions and 3 deletions
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19
libavformat/rmenc.c
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@ -60,7 +60,7 @@ static void put_str8(ByteIOContext *s, const char *tag)
}
}
static void rv10_write_header(AVFormatContext *ctx,
static int rv10_write_header(AVFormatContext *ctx,
int data_size, int index_pos)
{
RMMuxContext *rm = ctx->priv_data;
@ -225,7 +225,13 @@ static void rv10_write_header(AVFormatContext *ctx,
put_be32(s, 0x10); /* unknown */
put_be16(s, stream->enc->channels);
put_str8(s, "Int0"); /* codec name */
put_str8(s, "dnet"); /* codec name */
if (stream->enc->codec_tag) {
put_byte(s, 4); /* tag length */
put_le32(s, stream->enc->codec_tag);
} else {
av_log(ctx, AV_LOG_ERROR, "Invalid codec tag\n");
return -1;
}
put_be16(s, 0); /* title length */
put_be16(s, 0); /* author length */
put_be16(s, 0); /* copyright length */
@ -270,6 +276,7 @@ static void rv10_write_header(AVFormatContext *ctx,
put_be32(s, nb_packets); /* number of packets */
put_be32(s,0); /* next data header */
return 0;
}
static void write_packet_header(AVFormatContext *ctx, StreamInfo *stream,
@ -330,7 +337,8 @@ static int rm_write_header(AVFormatContext *s)
}
}
rv10_write_header(s, 0, 0);
if (rv10_write_header(s, 0, 0))
return AVERROR_INVALIDDATA;
put_flush_packet(s->pb);
return 0;
}
@ -348,12 +356,16 @@ static int rm_write_audio(AVFormatContext *s, const uint8_t *buf, int size, int
write_packet_header(s, stream, size, !!(flags & AV_PKT_FLAG_KEY));
if (stream->enc->codec_id == CODEC_ID_AC3) {
/* for AC-3, the words seem to be reversed */
for(i=0;i<size;i+=2) {
buf1[i] = buf[i+1];
buf1[i+1] = buf[i];
}
put_buffer(pb, buf1, size);
} else {
put_buffer(pb, buf, size);
}
put_flush_packet(pb);
stream->nb_frames++;
av_free(buf1);
@ -456,4 +468,5 @@ AVOutputFormat rm_muxer = {
rm_write_header,
rm_write_packet,
rm_write_trailer,
.codec_tag= (const AVCodecTag* const []){ff_rm_codec_tags, 0},
};