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Add support for 32-bit PCM sample data

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raysan5
2017-01-15 01:25:09 +01:00
parent 53457e4664
commit 6d6659205c
1 changed files with 14 additions and 5 deletions
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19
src/audio.c
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@ -21,7 +21,7 @@
* *
* Some design decisions: * Some design decisions:
* Support only up to two channels: MONO and STEREO (for additional channels, AL_EXT_MCFORMATS) * Support only up to two channels: MONO and STEREO (for additional channels, AL_EXT_MCFORMATS)
* Support only the following sample sizes: 8bit PCM and 16bit PCM (for additional size, AL_EXT_FLOAT32) * Support only the following sample sizes: 8bit PCM, 16bit PCM, 32-bit float PCM (using AL_EXT_FLOAT32)
* *
* Many thanks to Joshua Reisenauer (github: @kd7tck) for the following additions: * Many thanks to Joshua Reisenauer (github: @kd7tck) for the following additions:
* XM audio module support (jar_xm) * XM audio module support (jar_xm)
@ -98,6 +98,15 @@
// In case of music-stalls, just increase this number // In case of music-stalls, just increase this number
#define AUDIO_BUFFER_SIZE 4096 // PCM data samples (i.e. 16bit, Mono: 8Kb) #define AUDIO_BUFFER_SIZE 4096 // PCM data samples (i.e. 16bit, Mono: 8Kb)
// Support uncompressed PCM data in 32-bit float IEEE format
// NOTE: This definition is included in "AL/alext.h", but some OpenAL implementations
// could not provide the extensions header (Android), so its defined here
#if !defined(AL_EXT_float32)
#define AL_EXT_float32 1
#define AL_FORMAT_MONO_FLOAT32 0x10010
#define AL_FORMAT_STEREO_FLOAT32 0x10011
#endif
//---------------------------------------------------------------------------------- //----------------------------------------------------------------------------------
// Types and Structures Definition // Types and Structures Definition
//---------------------------------------------------------------------------------- //----------------------------------------------------------------------------------
@ -284,7 +293,7 @@ Sound LoadSoundFromWave(Wave wave)
{ {
case 8: format = AL_FORMAT_MONO8; break; case 8: format = AL_FORMAT_MONO8; break;
case 16: format = AL_FORMAT_MONO16; break; case 16: format = AL_FORMAT_MONO16; break;
case 32: //format = AL_FORMAT_MONO_FLOAT32; break; // Requires OpenAL extension: AL_EXT_FLOAT32 case 32: format = AL_FORMAT_MONO_FLOAT32; break; // Requires OpenAL extension: AL_EXT_FLOAT32
default: TraceLog(WARNING, "Wave sample size not supported: %i", wave.sampleSize); break; default: TraceLog(WARNING, "Wave sample size not supported: %i", wave.sampleSize); break;
} }
} }
@ -294,7 +303,7 @@ Sound LoadSoundFromWave(Wave wave)
{ {
case 8: format = AL_FORMAT_STEREO8; break; case 8: format = AL_FORMAT_STEREO8; break;
case 16: format = AL_FORMAT_STEREO16; break; case 16: format = AL_FORMAT_STEREO16; break;
case 32: //format = AL_FORMAT_STEREO_FLOAT32; break; // Requires OpenAL extension: AL_EXT_FLOAT32 case 32: format = AL_FORMAT_STEREO_FLOAT32; break; // Requires OpenAL extension: AL_EXT_FLOAT32
default: TraceLog(WARNING, "Wave sample size not supported: %i", wave.sampleSize); break; default: TraceLog(WARNING, "Wave sample size not supported: %i", wave.sampleSize); break;
} }
} }
@ -863,7 +872,7 @@ AudioStream InitAudioStream(unsigned int sampleRate, unsigned int sampleSize, un
{ {
case 8: stream.format = AL_FORMAT_MONO8; break; case 8: stream.format = AL_FORMAT_MONO8; break;
case 16: stream.format = AL_FORMAT_MONO16; break; case 16: stream.format = AL_FORMAT_MONO16; break;
case 32: //stream.format = AL_FORMAT_MONO_FLOAT32; break; // Requires OpenAL extension: AL_EXT_FLOAT32 case 32: stream.format = AL_FORMAT_MONO_FLOAT32; break; // Requires OpenAL extension: AL_EXT_FLOAT32
default: TraceLog(WARNING, "Init audio stream: Sample size not supported: %i", sampleSize); break; default: TraceLog(WARNING, "Init audio stream: Sample size not supported: %i", sampleSize); break;
} }
} }
@ -873,7 +882,7 @@ AudioStream InitAudioStream(unsigned int sampleRate, unsigned int sampleSize, un
{ {
case 8: stream.format = AL_FORMAT_STEREO8; break; case 8: stream.format = AL_FORMAT_STEREO8; break;
case 16: stream.format = AL_FORMAT_STEREO16; break; case 16: stream.format = AL_FORMAT_STEREO16; break;
case 32: //stream.format = AL_FORMAT_STEREO_FLOAT32; break; // Requires OpenAL extension: AL_EXT_FLOAT32 case 32: stream.format = AL_FORMAT_STEREO_FLOAT32; break; // Requires OpenAL extension: AL_EXT_FLOAT32
default: TraceLog(WARNING, "Init audio stream: Sample size not supported: %i", sampleSize); break; default: TraceLog(WARNING, "Init audio stream: Sample size not supported: %i", sampleSize); break;
} }
} }