|
|
|
@ -34,9 +34,9 @@ bool WavDecoderPlugin::canDecode(File* src) {
|
|
|
|
|
bool res = false;
|
|
|
|
|
src->openRO();
|
|
|
|
|
if (src->read(header, 4) != 4 || memcmp(header, "RIFF",4) != 0 ) goto close;
|
|
|
|
|
src->seek(8);
|
|
|
|
|
src->lseek(8);
|
|
|
|
|
if (src->read(header, 4) != 4 || memcmp(header, "WAVE",4) != 0 ) goto close;
|
|
|
|
|
src->seek(20);
|
|
|
|
|
src->lseek(20);
|
|
|
|
|
if (src->read(header, 2) != 2 || memcmp(header, "\x01\0",2) != 0 ) goto close;
|
|
|
|
|
res = true;
|
|
|
|
|
close:
|
|
|
|
@ -77,11 +77,11 @@ bool WavDecoder::openFile(File* src) {
|
|
|
|
|
|
|
|
|
|
// Get format information
|
|
|
|
|
unsigned char buffer[4];
|
|
|
|
|
src->seek(4);
|
|
|
|
|
src->lseek(4);
|
|
|
|
|
src->read((char*)buffer, 4); // size of stream
|
|
|
|
|
d->length = buffer[0] + buffer[1]*256 + buffer[2] * (1<<16) + buffer[3] * (1<<24) + 8;
|
|
|
|
|
|
|
|
|
|
src->seek(16);
|
|
|
|
|
src->lseek(16);
|
|
|
|
|
src->read((char*)buffer, 4); // should really be 16
|
|
|
|
|
d->pos = 20 + buffer[0] + buffer[1]*256;
|
|
|
|
|
if (buffer[2] != 0 || buffer[3] != 0) goto invalid;
|
|
|
|
@ -99,7 +99,7 @@ bool WavDecoder::openFile(File* src) {
|
|
|
|
|
src->read((char*)buffer, 4);
|
|
|
|
|
d->config.sample_rate = buffer[0] + buffer[1]*256 + buffer[2] * (1<<16) + buffer[3] * (1<<24);
|
|
|
|
|
|
|
|
|
|
src->seek(34);
|
|
|
|
|
src->lseek(34);
|
|
|
|
|
src->read((char*)buffer, 2);
|
|
|
|
|
d->config.sample_width = buffer[0] + buffer[1]*256;
|
|
|
|
|
|
|
|
|
@ -108,7 +108,7 @@ bool WavDecoder::openFile(File* src) {
|
|
|
|
|
if (d->config.sample_rate > 200000) goto invalid;
|
|
|
|
|
|
|
|
|
|
find_data:
|
|
|
|
|
src->seek(d->pos);
|
|
|
|
|
src->lseek(d->pos);
|
|
|
|
|
src->read((char*)buffer, 4);
|
|
|
|
|
if (memcmp(buffer, "data", 4) != 0)
|
|
|
|
|
if (memcmp(buffer, "clm ", 4) != 0)
|
|
|
|
@ -119,7 +119,7 @@ find_data:
|
|
|
|
|
goto find_data;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
src->seek(d->pos+8); // start of data
|
|
|
|
|
src->lseek(d->pos+8); // start of data
|
|
|
|
|
d->position = 0;
|
|
|
|
|
d->valid = true;
|
|
|
|
|
// 1024 samples:
|
|
|
|
@ -219,7 +219,7 @@ bool WavDecoder::seek(long pos) {
|
|
|
|
|
long sample_pos = (pos * byterate) / 1000;
|
|
|
|
|
long byte_pos = sample_pos * samplesize;
|
|
|
|
|
if (byte_pos+44 >= d->length) return false;
|
|
|
|
|
if (!d->src->seek(byte_pos+44)) return false;
|
|
|
|
|
if (!d->src->lseek(byte_pos+44)) return false;
|
|
|
|
|
d->pos = byte_pos + 44;
|
|
|
|
|
return true;
|
|
|
|
|
}
|
|
|
|
|