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authormalc <av1474@comtv.ru>2009-10-10 01:13:41 +0400
committermalc <av1474@comtv.ru>2009-10-10 01:18:24 +0400
commitd56316388d09c976ba2ac2ab67a400f98a11116f (patch)
tree3e46a425c5d9f4fbaead918bc07aa7bf59e53cef /audio/dsoundaudio.c
parentad323081aa0e20d3d573ea64e88a893d576c05e0 (diff)
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Windows Waveform Audio driver (no ADC support yet)
Signed-off-by: malc <av1474@comtv.ru>
Diffstat (limited to 'audio/dsoundaudio.c')
-rw-r--r--audio/dsoundaudio.c97
1 files changed, 2 insertions, 95 deletions
diff --git a/audio/dsoundaudio.c b/audio/dsoundaudio.c
index 5b255ac..e547955 100644
--- a/audio/dsoundaudio.c
+++ b/audio/dsoundaudio.c
@@ -37,6 +37,8 @@
#include <objbase.h>
#include <dsound.h>
+#include "audio_win_int.h"
+
/* #define DEBUG_DSOUND */
static struct {
@@ -304,101 +306,6 @@ static int dsound_restore_out (LPDIRECTSOUNDBUFFER dsb)
return -1;
}
-static int waveformat_from_audio_settings (WAVEFORMATEX *wfx,
- struct audsettings *as)
-{
- memset (wfx, 0, sizeof (*wfx));
-
- wfx->wFormatTag = WAVE_FORMAT_PCM;
- wfx->nChannels = as->nchannels;
- wfx->nSamplesPerSec = as->freq;
- wfx->nAvgBytesPerSec = as->freq << (as->nchannels == 2);
- wfx->nBlockAlign = 1 << (as->nchannels == 2);
- wfx->cbSize = 0;
-
- switch (as->fmt) {
- case AUD_FMT_S8:
- case AUD_FMT_U8:
- wfx->wBitsPerSample = 8;
- break;
-
- case AUD_FMT_S16:
- case AUD_FMT_U16:
- wfx->wBitsPerSample = 16;
- wfx->nAvgBytesPerSec <<= 1;
- wfx->nBlockAlign <<= 1;
- break;
-
- case AUD_FMT_S32:
- case AUD_FMT_U32:
- wfx->wBitsPerSample = 32;
- wfx->nAvgBytesPerSec <<= 2;
- wfx->nBlockAlign <<= 2;
- break;
-
- default:
- dolog ("Internal logic error: Bad audio format %d\n", as->freq);
- return -1;
- }
-
- return 0;
-}
-
-static int waveformat_to_audio_settings (WAVEFORMATEX *wfx,
- struct audsettings *as)
-{
- if (wfx->wFormatTag != WAVE_FORMAT_PCM) {
- dolog ("Invalid wave format, tag is not PCM, but %d\n",
- wfx->wFormatTag);
- return -1;
- }
-
- if (!wfx->nSamplesPerSec) {
- dolog ("Invalid wave format, frequency is zero\n");
- return -1;
- }
- as->freq = wfx->nSamplesPerSec;
-
- switch (wfx->nChannels) {
- case 1:
- as->nchannels = 1;
- break;
-
- case 2:
- as->nchannels = 2;
- break;
-
- default:
- dolog (
- "Invalid wave format, number of channels is not 1 or 2, but %d\n",
- wfx->nChannels
- );
- return -1;
- }
-
- switch (wfx->wBitsPerSample) {
- case 8:
- as->fmt = AUD_FMT_U8;
- break;
-
- case 16:
- as->fmt = AUD_FMT_S16;
- break;
-
- case 32:
- as->fmt = AUD_FMT_S32;
- break;
-
- default:
- dolog ("Invalid wave format, bits per sample is not "
- "8, 16 or 32, but %d\n",
- wfx->wBitsPerSample);
- return -1;
- }
-
- return 0;
-}
-
#include "dsound_template.h"
#define DSBTYPE_IN
#include "dsound_template.h"