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Allow reading wav files with a 0 bytes RIFF chunk

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This is required in order to read streamed wav files produced by
the libavformat wav muxer.
This commit is contained in:
Martin Storsjo
2014-02-07 14:51:06 +02:00
parent 3951d0a4e5
commit cb19aa7c12
1 changed files with 5 additions and 1 deletions
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6
wavreader.c
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@@ -83,6 +83,10 @@ void* wav_read_open(const char *filename) {
if (feof(wr->wav)) if (feof(wr->wav))
break; break;
length = read_int32(wr); length = read_int32(wr);
if (!length) {
wr->streamed = 1;
length = ~0;
}
if (tag != TAG('R', 'I', 'F', 'F') || length < 4) { if (tag != TAG('R', 'I', 'F', 'F') || length < 4) {
fseek(wr->wav, length, SEEK_CUR); fseek(wr->wav, length, SEEK_CUR);
continue; continue;
@@ -118,7 +122,7 @@ void* wav_read_open(const char *filename) {
} else if (subtag == TAG('d', 'a', 't', 'a')) { } else if (subtag == TAG('d', 'a', 't', 'a')) {
data_pos = ftell(wr->wav); data_pos = ftell(wr->wav);
wr->data_length = sublength; wr->data_length = sublength;
if (!wr->data_length) { if (!wr->data_length || wr->streamed) {
wr->streamed = 1; wr->streamed = 1;
return wr; return wr;
} }