mirror/miniaudio
1
0
Fork 0
mirror of https://github.com/mackron/miniaudio.git synced 2026-04-22 00:06:59 +02:00
Code Issues Packages Projects Releases Wiki Activity

Minor changes to data converter in preparation for future work.

Browse Source
This commit is contained in:
David Reid
2021-08-04 20:42:23 +10:00
parent 961223b50c
commit ecfac57bed
1 changed files with 46 additions and 45 deletions
Download Patch File Download Diff File Expand all files Collapse all files
miniaudio.h
+46 -45
View File
@@ -3689,7 +3689,7 @@ typedef struct
ma_channel channelMapOut[MA_MAX_CHANNELS];
ma_dither_mode ditherMode;
ma_channel_mix_mode channelMixMode;
float channelWeights[MA_MAX_CHANNELS][MA_MAX_CHANNELS]; /* [in][out]. Only used when channelMixMode is set to ma_channel_mix_mode_custom_weights. */
float** ppChannelWeights; /* [in][out]. Only used when mixingMode is set to ma_channel_mix_mode_custom_weights. */
ma_bool32 allowDynamicSampleRate;
ma_resampler_config resampling;
} ma_data_converter_config;
@@ -3710,7 +3710,13 @@ typedef enum
typedef struct
{
ma_data_converter_config config;
ma_format formatIn;
ma_format formatOut;
ma_uint32 channelsIn;
ma_uint32 channelsOut;
ma_uint32 sampleRateIn;
ma_uint32 sampleRateOut;
ma_dither_mode ditherMode;
ma_data_converter_execution_path executionPath; /* The execution path the data converter will follow when processing. */
ma_channel_converter channelConverter;
ma_resampler resampler;
@@ -45907,9 +45913,14 @@ static ma_format ma_data_converter_config_get_mid_format(const ma_data_converter
static ma_channel_converter_config ma_channel_converter_config_init_from_data_converter_config(const ma_data_converter_config* pConfig)
{
ma_channel_converter_config channelConverterConfig;
MA_ASSERT(pConfig != NULL);
return ma_channel_converter_config_init(ma_data_converter_config_get_mid_format(pConfig), pConfig->channelsIn, pConfig->channelMapIn, pConfig->channelsOut, pConfig->channelMapOut, pConfig->channelMixMode);
channelConverterConfig = ma_channel_converter_config_init(ma_data_converter_config_get_mid_format(pConfig), pConfig->channelsIn, pConfig->channelMapIn, pConfig->channelsOut, pConfig->channelMapOut, pConfig->channelMixMode);
channelConverterConfig.ppWeights = pConfig->ppChannelWeights;
return channelConverterConfig;
}
static ma_resampler_config ma_resampler_config_init_from_data_converter_config(const ma_data_converter_config* pConfig)
@@ -46025,7 +46036,13 @@ MA_API ma_result ma_data_converter_init_preallocated(const ma_data_converter_con
pConverter->_pHeap = pHeap;
MA_ZERO_MEMORY(pHeap, heapLayout.sizeInBytes);
pConverter->config = *pConfig;
pConverter->formatIn = pConfig->formatIn;
pConverter->formatOut = pConfig->formatOut;
pConverter->channelsIn = pConfig->channelsIn;
pConverter->channelsOut = pConfig->channelsOut;
pConverter->sampleRateIn = pConfig->sampleRateIn;
pConverter->sampleRateOut = pConfig->sampleRateOut;
pConverter->ditherMode = pConfig->ditherMode;
/*
Determine if resampling is required. We need to do this so we can determine an appropriate
@@ -46038,18 +46055,7 @@ MA_API ma_result ma_data_converter_init_preallocated(const ma_data_converter_con
/* Channel converter. We always initialize this, but we check if it configures itself as a passthrough to determine whether or not it's needed. */
{
ma_uint32 iChannelIn;
ma_uint32 iChannelOut;
ma_channel_converter_config channelConverterConfig;
channelConverterConfig = ma_channel_converter_config_init_from_data_converter_config(pConfig);
/* Channel weights. */
for (iChannelIn = 0; iChannelIn < pConverter->config.channelsIn; iChannelIn += 1) {
for (iChannelOut = 0; iChannelOut < pConverter->config.channelsOut; iChannelOut += 1) {
channelConverterConfig.weights[iChannelIn][iChannelOut] = pConverter->config.channelWeights[iChannelIn][iChannelOut];
}
}
ma_channel_converter_config channelConverterConfig = ma_channel_converter_config_init_from_data_converter_config(pConfig);
result = ma_channel_converter_init_preallocated(&channelConverterConfig, ma_offset_ptr(pHeap, heapLayout.channelConverterOffset), &pConverter->channelConverter);
if (result != MA_SUCCESS) {
@@ -46063,11 +46069,6 @@ MA_API ma_result ma_data_converter_init_preallocated(const ma_data_converter_con
}
/* Always enable dynamic sample rates if the input sample rate is different because we're always going to need a resampler in this case anyway. */
if (pConverter->config.allowDynamicSampleRate == MA_FALSE) {
pConverter->config.allowDynamicSampleRate = pConverter->config.sampleRateIn != pConverter->config.sampleRateOut;
}
/* Resampler. */
if (isResamplingRequired) {
ma_resampler_config resamplerConfig = ma_resampler_config_init_from_data_converter_config(pConfig);
@@ -46084,7 +46085,7 @@ MA_API ma_result ma_data_converter_init_preallocated(const ma_data_converter_con
/* We can simplify pre- and post-format conversion if we have neither channel conversion nor resampling. */
if (pConverter->hasChannelConverter == MA_FALSE && pConverter->hasResampler == MA_FALSE) {
/* We have neither channel conversion nor resampling so we'll only need one of pre- or post-format conversion, or none if the input and output formats are the same. */
if (pConverter->config.formatIn == pConverter->config.formatOut) {
if (pConverter->formatIn == pConverter->formatOut) {
/* The formats are the same so we can just pass through. */
pConverter->hasPreFormatConversion = MA_FALSE;
pConverter->hasPostFormatConversion = MA_FALSE;
@@ -46095,10 +46096,10 @@ MA_API ma_result ma_data_converter_init_preallocated(const ma_data_converter_con
}
} else {
/* We have a channel converter and/or resampler so we'll need channel conversion based on the mid format. */
if (pConverter->config.formatIn != midFormat) {
if (pConverter->formatIn != midFormat) {
pConverter->hasPreFormatConversion = MA_TRUE;
}
if (pConverter->config.formatOut != midFormat) {
if (pConverter->formatOut != midFormat) {
pConverter->hasPostFormatConversion = MA_TRUE;
}
}
@@ -46116,7 +46117,7 @@ MA_API ma_result ma_data_converter_init_preallocated(const ma_data_converter_con
if (pConverter->isPassthrough) {
pConverter->executionPath = ma_data_converter_execution_path_passthrough;
} else {
if (pConverter->config.channelsIn < pConverter->config.channelsOut) {
if (pConverter->channelsIn < pConverter->channelsOut) {
/* Do resampling first, if necessary. */
MA_ASSERT(pConverter->hasChannelConverter == MA_TRUE);
@@ -46216,9 +46217,9 @@ static ma_result ma_data_converter_process_pcm_frames__passthrough(ma_data_conve
if (pFramesOut != NULL) {
if (pFramesIn != NULL) {
ma_copy_memory_64(pFramesOut, pFramesIn, frameCount * ma_get_bytes_per_frame(pConverter->config.formatOut, pConverter->config.channelsOut));
ma_copy_memory_64(pFramesOut, pFramesIn, frameCount * ma_get_bytes_per_frame(pConverter->formatOut, pConverter->channelsOut));
} else {
ma_zero_memory_64(pFramesOut, frameCount * ma_get_bytes_per_frame(pConverter->config.formatOut, pConverter->config.channelsOut));
ma_zero_memory_64(pFramesOut, frameCount * ma_get_bytes_per_frame(pConverter->formatOut, pConverter->channelsOut));
}
}
@@ -46254,9 +46255,9 @@ static ma_result ma_data_converter_process_pcm_frames__format_only(ma_data_conve
if (pFramesOut != NULL) {
if (pFramesIn != NULL) {
ma_convert_pcm_frames_format(pFramesOut, pConverter->config.formatOut, pFramesIn, pConverter->config.formatIn, frameCount, pConverter->config.channelsIn, pConverter->config.ditherMode);
ma_convert_pcm_frames_format(pFramesOut, pConverter->formatOut, pFramesIn, pConverter->formatIn, frameCount, pConverter->channelsIn, pConverter->ditherMode);
} else {
ma_zero_memory_64(pFramesOut, frameCount * ma_get_bytes_per_frame(pConverter->config.formatOut, pConverter->config.channelsOut));
ma_zero_memory_64(pFramesOut, frameCount * ma_get_bytes_per_frame(pConverter->formatOut, pConverter->channelsOut));
}
}
@@ -46303,13 +46304,13 @@ static ma_result ma_data_converter_process_pcm_frames__resample_with_format_conv
ma_uint64 frameCountOutThisIteration;
if (pFramesIn != NULL) {
pFramesInThisIteration = ma_offset_ptr(pFramesIn, framesProcessedIn * ma_get_bytes_per_frame(pConverter->config.formatIn, pConverter->config.channelsIn));
pFramesInThisIteration = ma_offset_ptr(pFramesIn, framesProcessedIn * ma_get_bytes_per_frame(pConverter->formatIn, pConverter->channelsIn));
} else {
pFramesInThisIteration = NULL;
}
if (pFramesOut != NULL) {
pFramesOutThisIteration = ma_offset_ptr(pFramesOut, framesProcessedOut * ma_get_bytes_per_frame(pConverter->config.formatOut, pConverter->config.channelsOut));
pFramesOutThisIteration = ma_offset_ptr(pFramesOut, framesProcessedOut * ma_get_bytes_per_frame(pConverter->formatOut, pConverter->channelsOut));
} else {
pFramesOutThisIteration = NULL;
}
@@ -46331,7 +46332,7 @@ static ma_result ma_data_converter_process_pcm_frames__resample_with_format_conv
}
if (pFramesInThisIteration != NULL) {
ma_convert_pcm_frames_format(pTempBufferIn, pConverter->resampler.format, pFramesInThisIteration, pConverter->config.formatIn, frameCountInThisIteration, pConverter->config.channelsIn, pConverter->config.ditherMode);
ma_convert_pcm_frames_format(pTempBufferIn, pConverter->resampler.format, pFramesInThisIteration, pConverter->formatIn, frameCountInThisIteration, pConverter->channelsIn, pConverter->ditherMode);
} else {
MA_ZERO_MEMORY(pTempBufferIn, sizeof(pTempBufferIn));
}
@@ -46372,7 +46373,7 @@ static ma_result ma_data_converter_process_pcm_frames__resample_with_format_conv
/* If we are doing a post format conversion we need to do that now. */
if (pConverter->hasPostFormatConversion) {
if (pFramesOutThisIteration != NULL) {
ma_convert_pcm_frames_format(pFramesOutThisIteration, pConverter->config.formatOut, pTempBufferOut, pConverter->resampler.format, frameCountOutThisIteration, pConverter->resampler.channels, pConverter->config.ditherMode);
ma_convert_pcm_frames_format(pFramesOutThisIteration, pConverter->formatOut, pTempBufferOut, pConverter->resampler.format, frameCountOutThisIteration, pConverter->resampler.channels, pConverter->ditherMode);
}
}
@@ -46449,13 +46450,13 @@ static ma_result ma_data_converter_process_pcm_frames__channels_only(ma_data_con
ma_uint64 frameCountThisIteration;
if (pFramesIn != NULL) {
pFramesInThisIteration = ma_offset_ptr(pFramesIn, framesProcessed * ma_get_bytes_per_frame(pConverter->config.formatIn, pConverter->config.channelsIn));
pFramesInThisIteration = ma_offset_ptr(pFramesIn, framesProcessed * ma_get_bytes_per_frame(pConverter->formatIn, pConverter->channelsIn));
} else {
pFramesInThisIteration = NULL;
}
if (pFramesOut != NULL) {
pFramesOutThisIteration = ma_offset_ptr(pFramesOut, framesProcessed * ma_get_bytes_per_frame(pConverter->config.formatOut, pConverter->config.channelsOut));
pFramesOutThisIteration = ma_offset_ptr(pFramesOut, framesProcessed * ma_get_bytes_per_frame(pConverter->formatOut, pConverter->channelsOut));
} else {
pFramesOutThisIteration = NULL;
}
@@ -46477,7 +46478,7 @@ static ma_result ma_data_converter_process_pcm_frames__channels_only(ma_data_con
}
if (pFramesInThisIteration != NULL) {
ma_convert_pcm_frames_format(pTempBufferIn, pConverter->channelConverter.format, pFramesInThisIteration, pConverter->config.formatIn, frameCountThisIteration, pConverter->config.channelsIn, pConverter->config.ditherMode);
ma_convert_pcm_frames_format(pTempBufferIn, pConverter->channelConverter.format, pFramesInThisIteration, pConverter->formatIn, frameCountThisIteration, pConverter->channelsIn, pConverter->ditherMode);
} else {
MA_ZERO_MEMORY(pTempBufferIn, sizeof(pTempBufferIn));
}
@@ -46511,7 +46512,7 @@ static ma_result ma_data_converter_process_pcm_frames__channels_only(ma_data_con
/* If we are doing a post format conversion we need to do that now. */
if (pConverter->hasPostFormatConversion) {
if (pFramesOutThisIteration != NULL) {
ma_convert_pcm_frames_format(pFramesOutThisIteration, pConverter->config.formatOut, pTempBufferOut, pConverter->channelConverter.format, frameCountThisIteration, pConverter->channelConverter.channelsOut, pConverter->config.ditherMode);
ma_convert_pcm_frames_format(pFramesOutThisIteration, pConverter->formatOut, pTempBufferOut, pConverter->channelConverter.format, frameCountThisIteration, pConverter->channelConverter.channelsOut, pConverter->ditherMode);
}
}
@@ -46574,10 +46575,10 @@ static ma_result ma_data_converter_process_pcm_frames__resample_first(ma_data_co
void* pChannelsBufferOut;
if (pFramesIn != NULL) {
pRunningFramesIn = ma_offset_ptr(pFramesIn, framesProcessedIn * ma_get_bytes_per_frame(pConverter->config.formatIn, pConverter->config.channelsIn));
pRunningFramesIn = ma_offset_ptr(pFramesIn, framesProcessedIn * ma_get_bytes_per_frame(pConverter->formatIn, pConverter->channelsIn));
}
if (pFramesOut != NULL) {
pRunningFramesOut = ma_offset_ptr(pFramesOut, framesProcessedOut * ma_get_bytes_per_frame(pConverter->config.formatOut, pConverter->config.channelsOut));
pRunningFramesOut = ma_offset_ptr(pFramesOut, framesProcessedOut * ma_get_bytes_per_frame(pConverter->formatOut, pConverter->channelsOut));
}
/* Run input data through the resampler and output it to the temporary buffer. */
@@ -46626,7 +46627,7 @@ static ma_result ma_data_converter_process_pcm_frames__resample_first(ma_data_co
if (pConverter->hasPreFormatConversion) {
if (pFramesIn != NULL) {
ma_convert_pcm_frames_format(pTempBufferIn, pConverter->resampler.format, pRunningFramesIn, pConverter->config.formatIn, frameCountInThisIteration, pConverter->config.channelsIn, pConverter->config.ditherMode);
ma_convert_pcm_frames_format(pTempBufferIn, pConverter->resampler.format, pRunningFramesIn, pConverter->formatIn, frameCountInThisIteration, pConverter->channelsIn, pConverter->ditherMode);
pResampleBufferIn = pTempBufferIn;
} else {
pResampleBufferIn = NULL;
@@ -46659,7 +46660,7 @@ static ma_result ma_data_converter_process_pcm_frames__resample_first(ma_data_co
/* Finally we do post format conversion. */
if (pConverter->hasPostFormatConversion) {
ma_convert_pcm_frames_format(pRunningFramesOut, pConverter->config.formatOut, pChannelsBufferOut, pConverter->channelConverter.format, frameCountOutThisIteration, pConverter->channelConverter.channelsOut, pConverter->config.ditherMode);
ma_convert_pcm_frames_format(pRunningFramesOut, pConverter->formatOut, pChannelsBufferOut, pConverter->channelConverter.format, frameCountOutThisIteration, pConverter->channelConverter.channelsOut, pConverter->ditherMode);
}
}
@@ -46730,10 +46731,10 @@ static ma_result ma_data_converter_process_pcm_frames__channels_first(ma_data_co
void* pResampleBufferOut;
if (pFramesIn != NULL) {
pRunningFramesIn = ma_offset_ptr(pFramesIn, framesProcessedIn * ma_get_bytes_per_frame(pConverter->config.formatIn, pConverter->config.channelsIn));
pRunningFramesIn = ma_offset_ptr(pFramesIn, framesProcessedIn * ma_get_bytes_per_frame(pConverter->formatIn, pConverter->channelsIn));
}
if (pFramesOut != NULL) {
pRunningFramesOut = ma_offset_ptr(pFramesOut, framesProcessedOut * ma_get_bytes_per_frame(pConverter->config.formatOut, pConverter->config.channelsOut));
pRunningFramesOut = ma_offset_ptr(pFramesOut, framesProcessedOut * ma_get_bytes_per_frame(pConverter->formatOut, pConverter->channelsOut));
}
/*
@@ -46790,7 +46791,7 @@ static ma_result ma_data_converter_process_pcm_frames__channels_first(ma_data_co
/* Pre format conversion. */
if (pConverter->hasPreFormatConversion) {
if (pRunningFramesIn != NULL) {
ma_convert_pcm_frames_format(pTempBufferIn, pConverter->channelConverter.format, pRunningFramesIn, pConverter->config.formatIn, frameCountInThisIteration, pConverter->config.channelsIn, pConverter->config.ditherMode);
ma_convert_pcm_frames_format(pTempBufferIn, pConverter->channelConverter.format, pRunningFramesIn, pConverter->formatIn, frameCountInThisIteration, pConverter->channelsIn, pConverter->ditherMode);
pChannelsBufferIn = pTempBufferIn;
} else {
pChannelsBufferIn = NULL;
@@ -46823,7 +46824,7 @@ static ma_result ma_data_converter_process_pcm_frames__channels_first(ma_data_co
/* Post format conversion. */
if (pConverter->hasPostFormatConversion) {
if (pRunningFramesOut != NULL) {
ma_convert_pcm_frames_format(pRunningFramesOut, pConverter->config.formatOut, pResampleBufferOut, pConverter->resampler.format, frameCountOutThisIteration, pConverter->config.channelsOut, pConverter->config.ditherMode);
ma_convert_pcm_frames_format(pRunningFramesOut, pConverter->formatOut, pResampleBufferOut, pConverter->resampler.format, frameCountOutThisIteration, pConverter->channelsOut, pConverter->ditherMode);
}
}