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mpc: return more meaningful error codes.

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This commit is contained in:
Anton Khirnov 2012-07-29 22:19:35 +02:00
parent 782e64fbe1
commit 263dbe9d95
1 changed files with 8 additions and 8 deletions
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16
libavformat/mpc.c
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@ -59,17 +59,17 @@ static int mpc_read_header(AVFormatContext *s)
if(avio_rl24(s->pb) != MKTAG('M', 'P', '+', 0)){
av_log(s, AV_LOG_ERROR, "Not a Musepack file\n");
return -1;
return AVERROR_INVALIDDATA;
}
c->ver = avio_r8(s->pb);
if(c->ver != 0x07 && c->ver != 0x17){
av_log(s, AV_LOG_ERROR, "Can demux Musepack SV7, got version %02X\n", c->ver);
return -1;
return AVERROR_INVALIDDATA;
}
c->fcount = avio_rl32(s->pb);
if((int64_t)c->fcount * sizeof(MPCFrame) >= UINT_MAX){
av_log(s, AV_LOG_ERROR, "Too many frames, seeking is not possible\n");
return -1;
return AVERROR_INVALIDDATA;
}
if(c->fcount){
c->frames = av_malloc(c->fcount * sizeof(MPCFrame));
@ -122,7 +122,7 @@ static int mpc_read_packet(AVFormatContext *s, AVPacket *pkt)
int64_t pos;
if (c->curframe >= c->fcount && c->fcount)
return -1;
return AVERROR_EOF;
if(c->curframe != c->lastframe + 1){
avio_seek(s->pb, c->frames[c->curframe].pos, SEEK_SET);
@ -151,8 +151,8 @@ static int mpc_read_packet(AVFormatContext *s, AVPacket *pkt)
}
c->curbits = (curbits + size2) & 0x1F;
if (av_new_packet(pkt, size) < 0)
return AVERROR(EIO);
if ((ret = av_new_packet(pkt, size)) < 0)
return ret;
pkt->data[0] = curbits;
pkt->data[1] = (c->curframe > c->fcount) && c->fcount;
@ -166,7 +166,7 @@ static int mpc_read_packet(AVFormatContext *s, AVPacket *pkt)
avio_seek(s->pb, -4, SEEK_CUR);
if(ret < size){
av_free_packet(pkt);
return AVERROR(EIO);
return ret < 0 ? ret : AVERROR(EIO);
}
pkt->size = ret + 4;
@ -214,7 +214,7 @@ static int mpc_read_seek(AVFormatContext *s, int stream_index, int64_t timestamp
ret = av_read_frame(s, pkt);
if (ret < 0){
c->curframe = lastframe;
return -1;
return ret;
}
av_free_packet(pkt);
}