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OSS: Update to the new device info system.

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This commit is contained in:
David Reid
2026-01-15 16:54:02 +10:00
parent cfed5b09a6
commit e0e26b5535
1 changed files with 29 additions and 45 deletions
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miniaudio.h
+28 -44
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@@ -39380,7 +39380,8 @@ static void ma_context_add_native_data_format__oss(ma_context* pContext, oss_aud
{
unsigned int minChannels;
unsigned int maxChannels;
unsigned int iRate;
unsigned int minSampleRate;
unsigned int maxSampleRate;
MA_ASSERT(pContext != NULL);
MA_ASSERT(pAudioInfo != NULL);
@@ -39388,44 +39389,13 @@ static void ma_context_add_native_data_format__oss(ma_context* pContext, oss_aud
(void)pContext;
/* If we support all channels we just report 0. */
minChannels = ma_clamp(pAudioInfo->min_channels, MA_MIN_CHANNELS, MA_MAX_CHANNELS);
maxChannels = ma_clamp(pAudioInfo->max_channels, MA_MIN_CHANNELS, MA_MAX_CHANNELS);
/*
OSS has this annoying thing where sample rates can be reported in two ways. We prefer explicitness,
which OSS has in the form of nrates/rates, however there are times where nrates can be 0, in which
case we'll need to use min_rate and max_rate and report only standard rates.
*/
if (pAudioInfo->nrates > 0) {
for (iRate = 0; iRate < pAudioInfo->nrates; iRate += 1) {
unsigned int rate = pAudioInfo->rates[iRate];
minSampleRate = ma_clamp(pAudioInfo->min_rate, ma_standard_sample_rate_min, ma_standard_sample_rate_max);
maxSampleRate = ma_clamp(pAudioInfo->max_rate, ma_standard_sample_rate_min, ma_standard_sample_rate_max);
if (minChannels == MA_MIN_CHANNELS && maxChannels == MA_MAX_CHANNELS) {
ma_device_info_add_native_data_format(pDeviceInfo, format, 0, rate, 0); /* Set the channel count to 0 to indicate that all channel counts are supported. */
} else {
unsigned int iChannel;
for (iChannel = minChannels; iChannel <= maxChannels; iChannel += 1) {
ma_device_info_add_native_data_format(pDeviceInfo, format, iChannel, rate, 0);
}
}
}
} else {
for (iRate = 0; iRate < ma_countof(ma_standard_sample_rates); iRate += 1) {
ma_uint32 standardRate = ma_standard_sample_rates[iRate];
if (standardRate >= (ma_uint32)pAudioInfo->min_rate && standardRate <= (ma_uint32)pAudioInfo->max_rate) {
if (minChannels == MA_MIN_CHANNELS && maxChannels == MA_MAX_CHANNELS) {
ma_device_info_add_native_data_format(pDeviceInfo, format, 0, standardRate, 0); /* Set the channel count to 0 to indicate that all channel counts are supported. */
} else {
unsigned int iChannel;
for (iChannel = minChannels; iChannel <= maxChannels; iChannel += 1) {
ma_device_info_add_native_data_format(pDeviceInfo, format, iChannel, standardRate, 0);
}
}
}
}
}
ma_device_info_add_native_data_format_2(pDeviceInfo, format, minChannels, maxChannels, minSampleRate, maxSampleRate);
}
#endif
@@ -39458,31 +39428,45 @@ static ma_result ma_context_add_native_data_format_legacy__oss(ma_context* pCont
formatWant = ma_format_to_oss(format);
formatHave = formatWant;
if (ioctl(fdDevice, SNDCTL_DSP_SETFMT, &formatHave) >= 0 && formatHave == formatWant) {
int minChannels = 0x7FFFFFFF;
int maxChannels = 0;
int minSampleRate = 0x7FFFFFFF;
int maxSampleRate = 0;
for (iChannel = 0; iChannel < maxChannelCount; iChannel += 1) {
int channelsWant = iChannel + 1;
int channelsHave = channelsWant;
ma_uint32 iSampleRate;
if (ioctl(fdDevice, SNDCTL_DSP_CHANNELS, &channelsHave) >= 0 && channelsHave == channelsWant) {
/* The device supports this channel count. */
if (ioctl(fdDevice, SNDCTL_DSP_CHANNELS, &channelsHave) >= 0) {
if (minChannels > channelsHave) {
minChannels = channelsHave;
}
if (maxChannels < channelsHave) {
maxChannels = channelsHave;
}
for (iSampleRate = 0; iSampleRate < ma_countof(ma_standard_sample_rates); iSampleRate += 1) {
int sampleRateWant = (int)ma_standard_sample_rates[iSampleRate];
int sampleRateHave = sampleRateWant;
if (ioctl(fdDevice, SNDCTL_DSP_SPEED, &sampleRateHave) >= 0 && sampleRateHave == sampleRateWant) {
/* Our format/channels/rate trio are supported. We can add this to the device info. */
ma_device_info_add_native_data_format(pDeviceInfo, format, channelsHave, sampleRateHave, 0);
if (ioctl(fdDevice, SNDCTL_DSP_SPEED, &sampleRateHave) >= 0) {
if (minSampleRate > sampleRateHave) {
minSampleRate = sampleRateHave;
}
if (maxSampleRate < sampleRateHave) {
maxSampleRate = sampleRateHave;
}
ioctl(fdDevice, SNDCTL_DSP_SPEED, &originalRate);
} else {
/* Sample rate not supported. */
}
}
ioctl(fdDevice, SNDCTL_DSP_CHANNELS, &originalChannels);
} else {
/* The channel count is not supported. */
}
}
ma_device_info_add_native_data_format_2(pDeviceInfo, format, minChannels, maxChannels, minSampleRate, maxSampleRate);
} else {
/* The format is not supported. */
return MA_ERROR;