1 /* public domain */
5 #define AUDIO_CAP "win-int"
19     wfx->nChannels = as->nchannels;  in waveformat_from_audio_settings()
20     wfx->nSamplesPerSec = as->freq;  in waveformat_from_audio_settings()
21     wfx->nAvgBytesPerSec = as->freq << (as->nchannels == 2);  in waveformat_from_audio_settings()
22     wfx->nBlockAlign = 1 << (as->nchannels == 2);  in waveformat_from_audio_settings()
23     wfx->cbSize = 0;  in waveformat_from_audio_settings()
25     switch (as->fmt) {  in waveformat_from_audio_settings()
28         wfx->wFormatTag = WAVE_FORMAT_PCM;  in waveformat_from_audio_settings()
29         wfx->wBitsPerSample = 8;  in waveformat_from_audio_settings()
34         wfx->wFormatTag = WAVE_FORMAT_PCM;  in waveformat_from_audio_settings()
35         wfx->wBitsPerSample = 16;  in waveformat_from_audio_settings()
36         wfx->nAvgBytesPerSec <<= 1;  in waveformat_from_audio_settings()
37         wfx->nBlockAlign <<= 1;  in waveformat_from_audio_settings()
42         wfx->wFormatTag = WAVE_FORMAT_PCM;  in waveformat_from_audio_settings()
43         wfx->wBitsPerSample = 32;  in waveformat_from_audio_settings()
44         wfx->nAvgBytesPerSec <<= 2;  in waveformat_from_audio_settings()
45         wfx->nBlockAlign <<= 2;  in waveformat_from_audio_settings()
49         wfx->wFormatTag = WAVE_FORMAT_IEEE_FLOAT;  in waveformat_from_audio_settings()
50         wfx->wBitsPerSample = 32;  in waveformat_from_audio_settings()
51         wfx->nAvgBytesPerSec <<= 2;  in waveformat_from_audio_settings()
52         wfx->nBlockAlign <<= 2;  in waveformat_from_audio_settings()
56         dolog("Internal logic error: Bad audio format %d\n", as->fmt);  in waveformat_from_audio_settings()
57         return -1;  in waveformat_from_audio_settings()
66     if (!wfx->nSamplesPerSec) {  in waveformat_to_audio_settings()
68         return -1;  in waveformat_to_audio_settings()
70     as->freq = wfx->nSamplesPerSec;  in waveformat_to_audio_settings()
72     switch (wfx->nChannels) {  in waveformat_to_audio_settings()
74         as->nchannels = 1;  in waveformat_to_audio_settings()
78         as->nchannels = 2;  in waveformat_to_audio_settings()
84             wfx->nChannels  in waveformat_to_audio_settings()
86         return -1;  in waveformat_to_audio_settings()
89     if (wfx->wFormatTag == WAVE_FORMAT_PCM) {  in waveformat_to_audio_settings()
90         switch (wfx->wBitsPerSample) {  in waveformat_to_audio_settings()
92             as->fmt = AUDIO_FORMAT_U8;  in waveformat_to_audio_settings()
96             as->fmt = AUDIO_FORMAT_S16;  in waveformat_to_audio_settings()
100             as->fmt = AUDIO_FORMAT_S32;  in waveformat_to_audio_settings()
106                   wfx->wBitsPerSample);  in waveformat_to_audio_settings()
107             return -1;  in waveformat_to_audio_settings()
109     } else if (wfx->wFormatTag == WAVE_FORMAT_IEEE_FLOAT) {  in waveformat_to_audio_settings()
110         switch (wfx->wBitsPerSample) {  in waveformat_to_audio_settings()
112             as->fmt = AUDIO_FORMAT_F32;  in waveformat_to_audio_settings()
118                   wfx->wBitsPerSample);  in waveformat_to_audio_settings()
119             return -1;  in waveformat_to_audio_settings()
124               wfx->wFormatTag);  in waveformat_to_audio_settings()
125         return -1;  in waveformat_to_audio_settings()