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authorChris Robinson <[email protected]>2010-11-21 06:54:41 -0800
committerChris Robinson <[email protected]>2010-11-21 06:54:41 -0800
commit57a03bc2b5a63e95d96bcfd46abd26b02400574c (patch)
tree20346361d41c176fbebeeffc40eab314b4a331f1 /Alc/wave.c
parenta7b4e0b5c5eefb8476836aad094035bd0a5cbcd5 (diff)
Use helpers to write 16- and 32-bit values
Diffstat (limited to 'Alc/wave.c')
-rw-r--r--Alc/wave.c85
1 files changed, 32 insertions, 53 deletions
diff --git a/Alc/wave.c b/Alc/wave.c
index efe58f92..1f25d7f2 100644
--- a/Alc/wave.c
+++ b/Alc/wave.c
@@ -63,6 +63,22 @@ static const ALuint channel_masks[] = {
0x1 | 0x2 | 0x4 | 0x8 | 0x10 | 0x20 | 0x200 | 0x400, /* 7.1 */
};
+
+static void fwrite16le(ALushort val, FILE *f)
+{
+ fputc(val&0xff, f);
+ fputc((val>>8)&0xff, f);
+}
+
+static void fwrite32le(ALuint val, FILE *f)
+{
+ fputc(val&0xff, f);
+ fputc((val>>8)&0xff, f);
+ fputc((val>>16)&0xff, f);
+ fputc((val>>24)&0xff, f);
+}
+
+
static ALuint WaveProc(ALvoid *ptr)
{
ALCdevice *pDevice = (ALCdevice*)ptr;
@@ -182,7 +198,7 @@ static void wave_close_playback(ALCdevice *device)
static ALCboolean wave_reset_playback(ALCdevice *device)
{
wave_data *data = (wave_data*)device->ExtraData;
- ALuint channels, bits, i;
+ ALuint channels, bits;
size_t val;
fseek(data->f, 0, SEEK_SET);
@@ -207,62 +223,36 @@ static ALCboolean wave_reset_playback(ALCdevice *device)
}
fprintf(data->f, "RIFF");
- fputc(0xFF, data->f); // 'RIFF' header len; filled in at close
- fputc(0xFF, data->f);
- fputc(0xFF, data->f);
- fputc(0xFF, data->f);
+ fwrite32le(0xFFFFFFFF, data->f); // 'RIFF' header len; filled in at close
fprintf(data->f, "WAVE");
fprintf(data->f, "fmt ");
- fputc(40, data->f); // 'fmt ' header len; 40 bytes for EXTENSIBLE
- fputc(0, data->f);
- fputc(0, data->f);
- fputc(0, data->f);
+ fwrite32le(40, data->f); // 'fmt ' header len; 40 bytes for EXTENSIBLE
+
// 16-bit val, format type id (extensible: 0xFFFE)
- fputc(0xFE, data->f);
- fputc(0xFF, data->f);
+ fwrite16le(0xFFFE, data->f);
// 16-bit val, channel count
- fputc(channels&0xff, data->f);
- fputc((channels>>8)&0xff, data->f);
+ fwrite16le(channels, data->f);
// 32-bit val, frequency
- fputc(device->Frequency&0xff, data->f);
- fputc((device->Frequency>>8)&0xff, data->f);
- fputc((device->Frequency>>16)&0xff, data->f);
- fputc((device->Frequency>>24)&0xff, data->f);
+ fwrite32le(device->Frequency, data->f);
// 32-bit val, bytes per second
- i = device->Frequency * channels * bits / 8;
- fputc(i&0xff, data->f);
- fputc((i>>8)&0xff, data->f);
- fputc((i>>16)&0xff, data->f);
- fputc((i>>24)&0xff, data->f);
+ fwrite32le(device->Frequency * channels * bits / 8, data->f);
// 16-bit val, frame size
- i = channels * bits / 8;
- fputc(i&0xff, data->f);
- fputc((i>>8)&0xff, data->f);
+ fwrite16le(channels * bits / 8, data->f);
// 16-bit val, bits per sample
- fputc(bits&0xff, data->f);
- fputc((bits>>8)&0xff, data->f);
+ fwrite16le(bits, data->f);
// 16-bit val, extra byte count
- fputc(22, data->f);
- fputc(0, data->f);
+ fwrite16le(22, data->f);
// 16-bit val, valid bits per sample
- fputc(bits&0xff, data->f);
- fputc((bits>>8)&0xff, data->f);
+ fwrite16le(bits, data->f);
// 32-bit val, channel mask
- i = channel_masks[channels];
- fputc(i&0xff, data->f);
- fputc((i>>8)&0xff, data->f);
- fputc((i>>16)&0xff, data->f);
- fputc((i>>24)&0xff, data->f);
+ fwrite32le(channel_masks[channels], data->f);
// 16 byte GUID, sub-type format
val = fwrite(((bits==32) ? SUBTYPE_FLOAT : SUBTYPE_PCM), 1, 16, data->f);
fprintf(data->f, "data");
- fputc(0xFF, data->f); // 'data' header len; filled in at close
- fputc(0xFF, data->f);
- fputc(0xFF, data->f);
- fputc(0xFF, data->f);
+ fwrite32le(0xFFFFFFFF, data->f); // 'data' header len; filled in at close
if(ferror(data->f))
{
@@ -316,20 +306,9 @@ static void wave_stop_playback(ALCdevice *device)
{
dataLen = size - data->DataStart;
if(fseek(data->f, data->DataStart-4, SEEK_SET) == 0)
- {
- fputc(dataLen&0xff, data->f); // 'data' header len
- fputc((dataLen>>8)&0xff, data->f);
- fputc((dataLen>>16)&0xff, data->f);
- fputc((dataLen>>24)&0xff, data->f);
- }
+ fwrite32le(dataLen, data->f); // 'data' header len
if(fseek(data->f, 4, SEEK_SET) == 0)
- {
- size -= 8;
- fputc(size&0xff, data->f); // 'WAVE' header len
- fputc((size>>8)&0xff, data->f);
- fputc((size>>16)&0xff, data->f);
- fputc((size>>24)&0xff, data->f);
- }
+ fwrite32le(size-8, data->f); // 'WAVE' header len
}
}