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Split ac3 byte swapping into a separate function. 

Patch by Ronald S. Bultje: rsbultje gmail com
Original thread: Re: [FFmpeg-devel] [PATCH 4/6] rmdec.c: rm_ac3_swap_bytes()
Date: 11/05/2007 09:27 PM

Originally committed as revision 10964 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Ronald S. Bultje 2007-11-08 15:52:53 +00:00 committed by Benoit Fouet
parent d4d1b5fbde
commit 5c470b910e
1 changed files with 17 additions and 10 deletions
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27
libavformat/rmdec.c
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@ -535,6 +535,21 @@ static int rm_assemble_video_frame(AVFormatContext *s, RMContext *rm, AVPacket *
return 1;
}
static inline void
rm_ac3_swap_bytes (AVStream *st, AVPacket *pkt)
{
uint8_t *ptr;
int j;
if (st->codec->codec_id == CODEC_ID_AC3) {
ptr = pkt->data;
for (j=0;j<pkt->size;j+=2) {
FFSWAP(int, ptr[0], ptr[1]);
ptr += 2;
}
}
}
static int
ff_rm_parse_packet (AVFormatContext *s, AVStream *st, int len, AVPacket *pkt,
int *seq, int *flags, int64_t *timestamp)
@ -658,9 +673,8 @@ static int rm_read_packet(AVFormatContext *s, AVPacket *pkt)
RMContext *rm = s->priv_data;
ByteIOContext *pb = &s->pb;
AVStream *st;
int i, len, j;
int i, len;
int64_t timestamp, pos;
uint8_t *ptr;
int flags;
if (rm->audio_pkt_cnt) {
@ -710,14 +724,7 @@ resync:
}
}
/* for AC3, needs to swap bytes */
if (st->codec->codec_id == CODEC_ID_AC3) {
ptr = pkt->data;
for(j=0;j<pkt->size;j+=2) {
FFSWAP(int, ptr[0], ptr[1]);
ptr += 2;
}
}
rm_ac3_swap_bytes(st, pkt);
return 0;
}