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Remove some unnecessary members from ma_decoder.

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This commit is contained in:
David Reid
2021-07-01 17:40:59 +10:00
parent fd0c441423
commit 00baf2f622
1 changed files with 65 additions and 32 deletions
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miniaudio.h
+65 -32
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@@ -6155,14 +6155,10 @@ struct ma_decoder
ma_decoder_seek_proc onSeek;
ma_decoder_tell_proc onTell;
void* pUserData;
ma_uint64 readPointerInPCMFrames; /* In output sample rate. Used for keeping track of how many frames are available for decoding. */
ma_format internalFormat;
ma_uint32 internalChannels;
ma_uint32 internalSampleRate;
ma_channel internalChannelMap[MA_MAX_CHANNELS];
ma_format outputFormat;
ma_uint32 outputChannels;
ma_uint32 outputSampleRate;
ma_uint64 readPointerInPCMFrames; /* In output sample rate. Used for keeping track of how many frames are available for decoding. */
ma_format outputFormat;
ma_uint32 outputChannels;
ma_uint32 outputSampleRate;
ma_channel outputChannelMap[MA_MAX_CHANNELS];
ma_data_converter converter; /* <-- Data conversion is achieved by running frames through this. */
ma_allocation_callbacks allocationCallbacks;
@@ -46749,37 +46745,56 @@ MA_API ma_decoder_config ma_decoder_config_init_copy(const ma_decoder_config* pC
static ma_result ma_decoder__init_data_converter(ma_decoder* pDecoder, const ma_decoder_config* pConfig)
{
ma_result result;
ma_data_converter_config converterConfig;
ma_format internalFormat;
ma_uint32 internalChannels;
ma_uint32 internalSampleRate;
ma_channel internalChannelMap[MA_MAX_CHANNELS];
MA_ASSERT(pDecoder != NULL);
MA_ASSERT(pConfig != NULL);
result = ma_data_source_get_data_format(pDecoder->pBackend, &internalFormat, &internalChannels, &internalSampleRate);
if (result != MA_SUCCESS) {
return result; /* Failed to retrieve the internal data format. */
}
/* Channel map needs to be retrieved separately. */
if (pDecoder->pBackendVTable != NULL && pDecoder->pBackendVTable->onGetChannelMap != NULL) {
pDecoder->pBackendVTable->onGetChannelMap(pDecoder->pBackendUserData, pDecoder->pBackend, internalChannelMap, ma_countof(internalChannelMap));
} else {
ma_get_standard_channel_map(ma_standard_channel_map_default, ma_min(internalChannels, ma_countof(internalChannelMap)), internalChannelMap);
}
/* Make sure we're not asking for too many channels. */
if (pConfig->channels > MA_MAX_CHANNELS) {
return MA_INVALID_ARGS;
}
/* The internal channels should have already been validated at a higher level, but we'll do it again explicitly here for safety. */
if (pDecoder->internalChannels > MA_MAX_CHANNELS) {
if (internalChannels > MA_MAX_CHANNELS) {
return MA_INVALID_ARGS;
}
/* Output format. */
if (pConfig->format == ma_format_unknown) {
pDecoder->outputFormat = pDecoder->internalFormat;
pDecoder->outputFormat = internalFormat;
} else {
pDecoder->outputFormat = pConfig->format;
}
if (pConfig->channels == 0) {
pDecoder->outputChannels = pDecoder->internalChannels;
pDecoder->outputChannels = internalChannels;
} else {
pDecoder->outputChannels = pConfig->channels;
}
if (pConfig->sampleRate == 0) {
pDecoder->outputSampleRate = pDecoder->internalSampleRate;
pDecoder->outputSampleRate = internalSampleRate;
} else {
pDecoder->outputSampleRate = pConfig->sampleRate;
}
@@ -46792,11 +46807,11 @@ static ma_result ma_decoder__init_data_converter(ma_decoder* pDecoder, const ma_
converterConfig = ma_data_converter_config_init(
pDecoder->internalFormat, pDecoder->outputFormat,
pDecoder->internalChannels, pDecoder->outputChannels,
pDecoder->internalSampleRate, pDecoder->outputSampleRate
internalFormat, pDecoder->outputFormat,
internalChannels, pDecoder->outputChannels,
internalSampleRate, pDecoder->outputSampleRate
);
ma_channel_map_copy(converterConfig.channelMapIn, pDecoder->internalChannelMap, pDecoder->internalChannels);
ma_channel_map_copy(converterConfig.channelMapIn, internalChannelMap, internalChannels);
ma_channel_map_copy(converterConfig.channelMapOut, pDecoder->outputChannelMap, pDecoder->outputChannels);
converterConfig.channelMixMode = pConfig->channelMixMode;
converterConfig.ditherMode = pConfig->ditherMode;
@@ -46861,15 +46876,6 @@ static ma_result ma_decoder_init_from_vtable(const ma_decoding_backend_vtable* p
pDecoder->pBackendVTable = pVTable;
pDecoder->pBackendUserData = pConfig->pCustomBackendUserData;
/* Internal format/channels/rate. */
ma_data_source_get_data_format(pDecoder->pBackend, &pDecoder->internalFormat, &pDecoder->internalChannels, &pDecoder->internalSampleRate);
/* Internal channel map. For now we need to use a separate vtable API for this, but later on we'll add this to ma_data_source_get_data_format(). */
if (pVTable->onGetChannelMap == NULL || pVTable->onGetChannelMap(pDecoder->pBackendUserData, pDecoder->pBackend, pDecoder->internalChannelMap, ma_countof(pDecoder->internalChannelMap)) != MA_SUCCESS) {
/* Failed to retrieve the channel map. Assume default. */
ma_get_standard_channel_map(ma_standard_channel_map_default, ma_min(pDecoder->internalChannels, ma_countof(pDecoder->internalChannelMap)), pDecoder->internalChannelMap);
}
return MA_SUCCESS;
}
@@ -49716,8 +49722,14 @@ static ma_result ma_decoder__postinit(const ma_decoder_config* pConfig, ma_decod
ma_result result = MA_SUCCESS;
/* Basic validation in case the internal decoder supports different limits to miniaudio. */
if (pDecoder->internalChannels < MA_MIN_CHANNELS || pDecoder->internalChannels > MA_MAX_CHANNELS) {
result = MA_INVALID_DATA;
{
/* TODO: Remove this block once we remove MA_MIN_CHANNELS and MA_MAX_CHANNELS. */
ma_uint32 internalChannels;
ma_data_source_get_data_format(pDecoder->pBackend, NULL, &internalChannels, NULL);
if (internalChannels < MA_MIN_CHANNELS || internalChannels > MA_MAX_CHANNELS) {
result = MA_INVALID_DATA;
}
}
if (result == MA_SUCCESS) {
@@ -50873,14 +50885,21 @@ MA_API ma_uint64 ma_decoder_get_length_in_pcm_frames(ma_decoder* pDecoder)
}
if (pDecoder->pBackend != NULL) {
ma_result result;
ma_uint64 nativeLengthInPCMFrames;
ma_uint32 internalSampleRate;
ma_data_source_get_length_in_pcm_frames(pDecoder->pBackend, &nativeLengthInPCMFrames);
if (pDecoder->internalSampleRate == pDecoder->outputSampleRate) {
result = ma_data_source_get_data_format(pDecoder->pBackend, NULL, NULL, &internalSampleRate);
if (result != MA_SUCCESS) {
return 0; /* Failed to retrieve the internal sample rate. */
}
if (internalSampleRate == pDecoder->outputSampleRate) {
return nativeLengthInPCMFrames;
} else {
return ma_calculate_frame_count_after_resampling(pDecoder->outputSampleRate, pDecoder->internalSampleRate, nativeLengthInPCMFrames);
return ma_calculate_frame_count_after_resampling(pDecoder->outputSampleRate, internalSampleRate, nativeLengthInPCMFrames);
}
}
@@ -50914,13 +50933,21 @@ MA_API ma_uint64 ma_decoder_read_pcm_frames(ma_decoder* pDecoder, void* pFramesO
result = ma_data_source_read_pcm_frames(pDecoder->pBackend, NULL, frameCount, &totalFramesReadOut, MA_FALSE);
} else {
/* Slow path. Need to run everything through the data converter. */
ma_format internalFormat;
ma_uint32 internalChannels;
totalFramesReadOut = 0;
totalFramesReadIn = 0;
pRunningFramesOut = pFramesOut;
result = ma_data_source_get_data_format(pDecoder->pBackend, &internalFormat, &internalChannels, NULL);
if (result != MA_SUCCESS) {
return 0; /* Failed to retrieve the internal format and channel count. */
}
while (totalFramesReadOut < frameCount) {
ma_uint8 pIntermediaryBuffer[MA_DATA_CONVERTER_STACK_BUFFER_SIZE]; /* In internal format. */
ma_uint64 intermediaryBufferCap = sizeof(pIntermediaryBuffer) / ma_get_bytes_per_frame(pDecoder->internalFormat, pDecoder->internalChannels);
ma_uint64 intermediaryBufferCap = sizeof(pIntermediaryBuffer) / ma_get_bytes_per_frame(internalFormat, internalChannels);
ma_uint64 framesToReadThisIterationIn;
ma_uint64 framesReadThisIterationIn;
ma_uint64 framesToReadThisIterationOut;
@@ -50982,11 +51009,17 @@ MA_API ma_result ma_decoder_seek_to_pcm_frame(ma_decoder* pDecoder, ma_uint64 fr
if (pDecoder->pBackend != NULL) {
ma_result result;
ma_uint64 internalFrameIndex;
ma_uint32 internalSampleRate;
if (pDecoder->internalSampleRate == pDecoder->outputSampleRate) {
result = ma_data_source_get_data_format(pDecoder->pBackend, NULL, NULL, &internalSampleRate);
if (result != MA_SUCCESS) {
return result; /* Failed to retrieve the internal sample rate. */
}
if (internalSampleRate == pDecoder->outputSampleRate) {
internalFrameIndex = frameIndex;
} else {
internalFrameIndex = ma_calculate_frame_count_after_resampling(pDecoder->internalSampleRate, pDecoder->outputSampleRate, frameIndex);
internalFrameIndex = ma_calculate_frame_count_after_resampling(internalSampleRate, pDecoder->outputSampleRate, frameIndex);
}
result = ma_data_source_seek_to_pcm_frame(pDecoder->pBackend, internalFrameIndex);