From 6177c7efe1748f9d89def83c9e792a7fa23526e7 Mon Sep 17 00:00:00 2001
From: Aurelien Jacobs <aurel@gnuage.org>
Date: Thu, 1 Nov 2007 17:50:05 +0000
Subject: [PATCH] remove useless initialization to 0 of adx context
Originally committed as revision 10899 to svn://svn.ffmpeg.org/ffmpeg/trunk
---
libavcodec/adx.c | 18 +-----------------
libavformat/mpeg.c | 12 +++++++++++-
2 files changed, 12 insertions(+), 18 deletions(-)
diff --git a/libavcodec/adx.c b/libavcodec/adx.c
index 2b44b89f98d..4b4165a7dbb 100644
--- a/libavcodec/adx.c
+++ b/libavcodec/adx.c
@@ -176,7 +176,6 @@ static int adx_encode_header(AVCodecContext *avctx,unsigned char *buf,size_t buf
return 0x20+4;
}
-static int adx_decode_init(AVCodecContext *avctx);
static int adx_encode_init(AVCodecContext *avctx)
{
if (avctx->channels > 2)
@@ -189,7 +188,6 @@ static int adx_encode_init(AVCodecContext *avctx)
// avctx->bit_rate = avctx->sample_rate*avctx->channels*18*8/32;
av_log(avctx, AV_LOG_DEBUG, "adx encode init\n");
- adx_decode_init(avctx);
return 0;
}
@@ -284,20 +282,6 @@ static int adx_decode_header(AVCodecContext *avctx,const unsigned char *buf,size
return offset;
}
-static int adx_decode_init(AVCodecContext * avctx)
-{
- ADXContext *c = avctx->priv_data;
-
-// printf("adx_decode_init\n"); fflush(stdout);
- c->prev[0].s1 = 0;
- c->prev[0].s2 = 0;
- c->prev[1].s1 = 0;
- c->prev[1].s2 = 0;
- c->header_parsed = 0;
- c->in_temp = 0;
- return 0;
-}
-
#if 0
static void dump(unsigned char *buf,size_t len)
{
@@ -391,7 +375,7 @@ AVCodec adpcm_adx_decoder = {
CODEC_TYPE_AUDIO,
CODEC_ID_ADPCM_ADX,
sizeof(ADXContext),
- adx_decode_init,
+ NULL,
NULL,
NULL,
adx_decode_frame,
diff --git a/libavformat/mpeg.c b/libavformat/mpeg.c
index 0f8270a4fcb..b23845f2fc3 100644
--- a/libavformat/mpeg.c
+++ b/libavformat/mpeg.c
@@ -85,15 +85,25 @@ static int mpegps_probe(AVProbeData *p)
typedef struct MpegDemuxContext {
int32_t header_state;
unsigned char psm_es_type[256];
+ int sofdec;
} MpegDemuxContext;
static int mpegps_read_header(AVFormatContext *s,
AVFormatParameters *ap)
{
MpegDemuxContext *m = s->priv_data;
+ uint8_t buffer[8192];
+ char *p;
+
m->header_state = 0xff;
s->ctx_flags |= AVFMTCTX_NOHEADER;
+ get_buffer(&s->pb, buffer, sizeof(buffer));
+ if ((p=memchr(buffer, 'S', sizeof(buffer))))
+ if (!memcmp(p, "Sofdec", 6))
+ m->sofdec = 1;
+ url_fseek(&s->pb, -sizeof(buffer), SEEK_CUR);
+
/* no need to do more */
return 0;
}
@@ -427,7 +437,7 @@ static int mpegps_read_packet(AVFormatContext *s,
type = CODEC_TYPE_VIDEO;
} else if (startcode >= 0x1c0 && startcode <= 0x1df) {
type = CODEC_TYPE_AUDIO;
- codec_id = CODEC_ID_MP2;
+ codec_id = m->sofdec ? CODEC_ID_ADPCM_ADX : CODEC_ID_MP2;
} else if (startcode >= 0x80 && startcode <= 0x87) {
type = CODEC_TYPE_AUDIO;
codec_id = CODEC_ID_AC3;
--
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