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use AV_RB32, swf_mp3_info may be replaced with mpa_decoder_header

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Originally committed as revision 8123 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Alex Beregszaszi 2007-02-25 14:13:12 +00:00
parent adcec46a83
commit 950d94ad3b
1 changed files with 1 additions and 2 deletions
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3
libavformat/swf.c
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@ -118,8 +118,7 @@ static const int sBitsPerSlot[3] = {
static int swf_mp3_info(void *data, int *byteSize, int *samplesPerFrame, int *sampleRate, int *isMono )
{
uint8_t *dataTmp = (uint8_t *)data;
uint32_t header = ( (uint32_t)dataTmp[0] << 24 ) | ( (uint32_t)dataTmp[1] << 16 ) | ( (uint32_t)dataTmp[2] << 8 ) | (uint32_t)dataTmp[3];
uint32_t header = AV_RB32(data);
int layerID = 3 - ((header >> 17) & 0x03);
int bitRateID = ((header >> 12) & 0x0f);
int sampleRateID = ((header >> 10) & 0x03);