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Use the correct default channel mapping for FLAC.

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This commit is contained in:
David Reid
2018-02-21 20:08:55 +10:00
parent 48dd8a318a
commit f89fbe04c5
1 changed files with 112 additions and 57 deletions
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mini_al.h
+112 -57
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@@ -11393,6 +11393,39 @@ mal_decoder_config mal_decoder_config_init_copy(const mal_decoder_config* pConfi
return config;
}
mal_result mal_decoder__init_dsp(mal_decoder* pDecoder, const mal_decoder_config* pConfig, mal_dsp_read_proc onRead)
{
mal_assert(pDecoder != NULL);
// Output format.
if (pConfig->outputFormat == mal_format_unknown) {
pDecoder->outputFormat = pDecoder->internalFormat;
} else {
pDecoder->outputFormat = pConfig->outputFormat;
}
if (pConfig->outputChannels == 0) {
pDecoder->outputChannels = pDecoder->internalChannels;
} else {
pDecoder->outputChannels = pConfig->outputChannels;
}
if (pConfig->outputSampleRate == 0) {
pDecoder->outputSampleRate = pDecoder->internalSampleRate;
} else {
pDecoder->outputSampleRate = pConfig->outputSampleRate;
}
mal_copy_memory(pDecoder->outputChannelMap, pConfig->outputChannelMap, sizeof(pConfig->outputChannelMap));
// DSP.
mal_dsp_config dspConfig = mal_dsp_config_init(pDecoder->internalFormat, pDecoder->internalChannels, pDecoder->internalSampleRate, pDecoder->outputFormat, pDecoder->outputChannels, pDecoder->outputSampleRate);
mal_copy_memory(dspConfig.channelMapIn, pDecoder->internalChannelMap, sizeof(pDecoder->internalChannelMap));
mal_copy_memory(dspConfig.channelMapOut, pDecoder->outputChannelMap, sizeof(pDecoder->outputChannelMap));
return mal_dsp_init(&dspConfig, onRead, pDecoder, &pDecoder->dsp);
}
// WAV
#ifdef dr_wav_h
#define MAL_HAS_WAV
@@ -11509,34 +11542,7 @@ mal_result mal_decoder_init_wav__internal(const mal_decoder_config* pConfig, mal
pDecoder->internalSampleRate = pWav->sampleRate;
mal_get_default_device_config_channel_map(pDecoder->internalChannels, pDecoder->internalChannelMap); // For WAV files we are currently making an assumption on the channel map.
// Output format.
if (pConfig->outputFormat == mal_format_unknown) {
pDecoder->outputFormat = pDecoder->internalFormat;
} else {
pDecoder->outputFormat = pConfig->outputFormat;
}
if (pConfig->outputChannels == 0) {
pDecoder->outputChannels = pDecoder->internalChannels;
} else {
pDecoder->outputChannels = pConfig->outputChannels;
}
if (pConfig->outputSampleRate == 0) {
pDecoder->outputSampleRate = pDecoder->internalSampleRate;
} else {
pDecoder->outputSampleRate = pConfig->outputSampleRate;
}
mal_copy_memory(pDecoder->outputChannelMap, pConfig->outputChannelMap, sizeof(pConfig->outputChannelMap));
// DSP.
mal_dsp_config dspConfig = mal_dsp_config_init(pDecoder->internalFormat, pDecoder->internalChannels, pDecoder->internalSampleRate, pDecoder->outputFormat, pDecoder->outputChannels, pDecoder->outputSampleRate);
mal_copy_memory(dspConfig.channelMapIn, pDecoder->internalChannelMap, sizeof(pDecoder->internalChannelMap));
mal_copy_memory(dspConfig.channelMapOut, pDecoder->outputChannelMap, sizeof(pDecoder->outputChannelMap));
mal_result result = mal_dsp_init(&dspConfig, mal_decoder_internal_on_read_frames__wav, pDecoder, &pDecoder->dsp);
mal_result result = mal_decoder__init_dsp(pDecoder, pConfig, mal_decoder_internal_on_read_frames__wav);
if (result != MAL_SUCCESS) {
drwav_close(pWav);
return result;
@@ -11550,6 +11556,82 @@ mal_result mal_decoder_init_wav__internal(const mal_decoder_config* pConfig, mal
#ifdef dr_flac_h
#define MAL_HAS_FLAC
static void mal_get_flac_channel_map(mal_uint32 channels, mal_uint8 channelMap[MAL_MAX_CHANNELS])
{
switch (channels) {
case 1:
{
channelMap[0] = MAL_CHANNEL_MONO;
} break;
case 2:
{
channelMap[0] = MAL_CHANNEL_LEFT;
channelMap[1] = MAL_CHANNEL_RIGHT;
} break;
case 3:
{
channelMap[0] = MAL_CHANNEL_LEFT;
channelMap[1] = MAL_CHANNEL_RIGHT;
channelMap[2] = MAL_CHANNEL_MONO;
} break;
case 4:
{
channelMap[0] = MAL_CHANNEL_FRONT_LEFT;
channelMap[1] = MAL_CHANNEL_FRONT_RIGHT;
channelMap[2] = MAL_CHANNEL_BACK_LEFT;
channelMap[3] = MAL_CHANNEL_BACK_RIGHT;
} break;
case 5:
{
channelMap[0] = MAL_CHANNEL_FRONT_LEFT;
channelMap[1] = MAL_CHANNEL_FRONT_RIGHT;
channelMap[2] = MAL_CHANNEL_FRONT_CENTER;
channelMap[3] = MAL_CHANNEL_BACK_LEFT;
channelMap[4] = MAL_CHANNEL_BACK_RIGHT;
} break;
case 6:
{
channelMap[0] = MAL_CHANNEL_FRONT_LEFT;
channelMap[1] = MAL_CHANNEL_FRONT_RIGHT;
channelMap[2] = MAL_CHANNEL_FRONT_CENTER;
channelMap[3] = MAL_CHANNEL_LFE;
channelMap[4] = MAL_CHANNEL_BACK_LEFT;
channelMap[5] = MAL_CHANNEL_BACK_RIGHT;
} break;
case 7:
{
channelMap[0] = MAL_CHANNEL_FRONT_LEFT;
channelMap[1] = MAL_CHANNEL_FRONT_RIGHT;
channelMap[2] = MAL_CHANNEL_FRONT_CENTER;
channelMap[3] = MAL_CHANNEL_LFE;
channelMap[4] = MAL_CHANNEL_BACK_CENTER;
channelMap[5] = MAL_CHANNEL_SIDE_LEFT;
channelMap[6] = MAL_CHANNEL_SIDE_RIGHT;
} break;
case 8:
{
channelMap[0] = MAL_CHANNEL_FRONT_LEFT;
channelMap[1] = MAL_CHANNEL_FRONT_RIGHT;
channelMap[2] = MAL_CHANNEL_FRONT_CENTER;
channelMap[3] = MAL_CHANNEL_LFE;
channelMap[4] = MAL_CHANNEL_BACK_LEFT;
channelMap[5] = MAL_CHANNEL_BACK_RIGHT;
channelMap[6] = MAL_CHANNEL_SIDE_LEFT;
channelMap[7] = MAL_CHANNEL_SIDE_RIGHT;
} break;
}
// Should never get here because FLAC has a maximum of 8 channels. In any case, just set the channel map to all zeros.
mal_zero_memory(channelMap, sizeof(channelMap));
}
static size_t mal_decoder_internal_on_read__flac(void* pUserData, void* pBufferOut, size_t bytesToRead)
{
mal_decoder* pDecoder = (mal_decoder*)pUserData;
@@ -11621,36 +11703,9 @@ mal_result mal_decoder_init_flac__internal(const mal_decoder_config* pConfig, ma
pDecoder->internalFormat = mal_format_s32;
pDecoder->internalChannels = pFlac->channels;
pDecoder->internalSampleRate = pFlac->sampleRate;
mal_get_default_device_config_channel_map(pDecoder->internalChannels, pDecoder->internalChannelMap); // TODO: The channel order is well defined by FLAC. Fix this.
mal_get_flac_channel_map(pDecoder->internalChannels, pDecoder->internalChannelMap);
// Output format.
if (pConfig->outputFormat == mal_format_unknown) {
pDecoder->outputFormat = pDecoder->internalFormat;
} else {
pDecoder->outputFormat = pConfig->outputFormat;
}
if (pConfig->outputChannels == 0) {
pDecoder->outputChannels = pDecoder->internalChannels;
} else {
pDecoder->outputChannels = pConfig->outputChannels;
}
if (pConfig->outputSampleRate == 0) {
pDecoder->outputSampleRate = pDecoder->internalSampleRate;
} else {
pDecoder->outputSampleRate = pConfig->outputSampleRate;
}
mal_copy_memory(pDecoder->outputChannelMap, pConfig->outputChannelMap, sizeof(pConfig->outputChannelMap));
// DSP.
mal_dsp_config dspConfig = mal_dsp_config_init(pDecoder->internalFormat, pDecoder->internalChannels, pDecoder->internalSampleRate, pDecoder->outputFormat, pDecoder->outputChannels, pDecoder->outputSampleRate);
mal_copy_memory(dspConfig.channelMapIn, pDecoder->internalChannelMap, sizeof(pDecoder->internalChannelMap));
mal_copy_memory(dspConfig.channelMapOut, pDecoder->outputChannelMap, sizeof(pDecoder->outputChannelMap));
mal_result result = mal_dsp_init(&dspConfig, mal_decoder_internal_on_read_frames__flac, pDecoder, &pDecoder->dsp);
mal_result result = mal_decoder__init_dsp(pDecoder, pConfig, mal_decoder_internal_on_read_frames__flac);
if (result != MAL_SUCCESS) {
drflac_close(pFlac);
return result;