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Patch #1189084 by David Bryant.

Browse source 
Wv2wav bug fixes.


git-svn-id: svn://svn.rockbox.org/rockbox/trunk@6440 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Thom Johansen 2005-05-08 17:10:01 +00:00
parent 69212c5f2f
commit a1483e6e1d
1 changed files with 27 additions and 16 deletions
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43
apps/plugins/wv2wav.c
View file

@ -32,7 +32,7 @@ static file_info_struct file_info;
static long temp_buffer [BUFFER_SIZE];
/* Reformat samples from longs in processor's native endian mode to
little-endian data with (possibly) less than 4 bytes / sample. */
little-endian data with 2 bytes / sample. */
uchar* format_samples (int bps, uchar *dst, long *src, ulong samcnt)
{
long temp;
@ -41,7 +41,10 @@ uchar* format_samples (int bps, uchar *dst, long *src, ulong samcnt)
{
case 1:
while (samcnt--)
*dst++ = *src++ + 128;
{
*dst++ = (uchar)(temp = (*src++ << 8));
*dst++ = (uchar)(temp >> 8);
}
break;
@ -57,9 +60,8 @@ uchar* format_samples (int bps, uchar *dst, long *src, ulong samcnt)
case 3:
while (samcnt--)
{
*dst++ = (uchar)(temp = *src++);
*dst++ = (uchar)(temp = (*src++ >> 8));
*dst++ = (uchar)(temp >> 8);
*dst++ = (uchar)(temp >> 16);
}
break;
@ -67,10 +69,8 @@ uchar* format_samples (int bps, uchar *dst, long *src, ulong samcnt)
case 4:
while (samcnt--)
{
*dst++ = (uchar)(temp = *src++);
*dst++ = (uchar)(temp = (*src++ >> 16));
*dst++ = (uchar)(temp >> 8);
*dst++ = (uchar)(temp >> 16);
*dst++ = (uchar)(temp >> 24);
}
break;
@ -83,7 +83,6 @@ uchar* format_samples (int bps, uchar *dst, long *src, ulong samcnt)
void wvpack_decode_data(file_info_struct* file_info, int samples_to_decode, WavpackContext **wpc)
{
int bps = WavpackGetBytesPerSample(*wpc);
/* nothing to decode */
if (!samples_to_decode)
{
@ -98,9 +97,20 @@ void wvpack_decode_data(file_info_struct* file_info, int samples_to_decode, Wavp
/* update some infos */
file_info->current_sample += samples_unpacked;
format_samples (bps, (uchar *) temp_buffer, temp_buffer, samples_unpacked *= file_info->channels);
/* for now, convert mono to stereo here, in place */
if (WavpackGetReducedChannels (*wpc) == 1) {
long *dst = temp_buffer + (samples_unpacked * 2);
long *src = temp_buffer + samples_unpacked;
long count = samples_unpacked;
rb->write(file_info->outfile, temp_buffer, samples_unpacked * bps);
while (count--) {
*--dst = *--src;
*--dst = *src;
}
}
format_samples (bps, (uchar *) temp_buffer, temp_buffer, samples_unpacked * file_info->channels);
rb->write(file_info->outfile, temp_buffer, samples_unpacked * 4);
}
}
@ -118,7 +128,7 @@ long Read(void* buffer, long size)
}
else
{
memcpy(buffer, &filebuf[file_info.curpos], (file_info.filesize-1-file_info.curpos));
memcpy(buffer, &filebuf[file_info.curpos], file_info.filesize-file_info.curpos);
file_info.curpos = file_info.filesize;
}
@ -151,10 +161,10 @@ enum plugin_status plugin_start(struct plugin_api* api, void* file)
return PLUGIN_ERROR;
}
/* grap/set some infos */
file_info.channels = WavpackGetReducedChannels(wpc);
/* grap/set some infos (forcing some to temp values) */
file_info.channels = 2;
file_info.total_samples = WavpackGetNumSamples(wpc);
file_info.bitspersample = WavpackGetBitsPerSample(wpc);
file_info.bitspersample = 16;
file_info.samplerate = WavpackGetSampleRate(wpc);
file_info.current_sample = 0;
@ -175,8 +185,10 @@ enum plugin_status plugin_start(struct plugin_api* api, void* file)
}
}
close_wav(&file_info);
/* do some last checks */
if ((WavpackGetNumSamples (wpc) != (ulong) -1) && (file_info.total_samples != WavpackGetNumSamples (wpc)))
if ((WavpackGetNumSamples (wpc) != (ulong) -1) && (file_info.current_sample != WavpackGetNumSamples (wpc)))
{
rb->splash(HZ*2, true, "incorrect number of samples!");
return PLUGIN_ERROR;
@ -187,7 +199,6 @@ enum plugin_status plugin_start(struct plugin_api* api, void* file)
return PLUGIN_ERROR;
}
close_wav(&file_info);
rb->splash(HZ*2, true, "FINISHED!");
return PLUGIN_OK;