mirror of
https://github.com/love2d/megasource.git
synced 2026-08-19 20:20:11 +02:00
Update OpenAL-soft to 1.23.1-bc7cb17.
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@@ -37,19 +37,31 @@
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#include "common/alhelpers.h"
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#include "win_main_utf8.h"
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enum FormatType {
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Int16,
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Float,
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IMA4,
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MSADPCM
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};
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/* LoadBuffer loads the named audio file into an OpenAL buffer object, and
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* returns the new buffer ID.
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*/
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static ALuint LoadSound(const char *filename)
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{
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enum FormatType sample_format = Int16;
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ALint byteblockalign = 0;
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ALint splblockalign = 0;
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sf_count_t num_frames;
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ALenum err, format;
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ALuint buffer;
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ALsizei num_bytes;
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SNDFILE *sndfile;
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SF_INFO sfinfo;
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short *membuf;
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sf_count_t num_frames;
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ALsizei num_bytes;
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ALuint buffer;
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void *membuf;
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/* Open the audio file and check that it's usable. */
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sndfile = sf_open(filename, SFM_READ, &sfinfo);
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@@ -58,28 +70,151 @@ static ALuint LoadSound(const char *filename)
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fprintf(stderr, "Could not open audio in %s: %s\n", filename, sf_strerror(sndfile));
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return 0;
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}
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if(sfinfo.frames < 1 || sfinfo.frames > (sf_count_t)(INT_MAX/sizeof(short))/sfinfo.channels)
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if(sfinfo.frames < 1)
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{
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fprintf(stderr, "Bad sample count in %s (%" PRId64 ")\n", filename, sfinfo.frames);
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sf_close(sndfile);
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return 0;
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}
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/* Get the sound format, and figure out the OpenAL format */
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/* Detect a suitable format to load. Formats like Vorbis and Opus use float
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* natively, so load as float to avoid clipping when possible. Formats
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* larger than 16-bit can also use float to preserve a bit more precision.
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*/
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switch((sfinfo.format&SF_FORMAT_SUBMASK))
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{
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case SF_FORMAT_PCM_24:
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case SF_FORMAT_PCM_32:
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case SF_FORMAT_FLOAT:
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case SF_FORMAT_DOUBLE:
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case SF_FORMAT_VORBIS:
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case SF_FORMAT_OPUS:
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case SF_FORMAT_ALAC_20:
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case SF_FORMAT_ALAC_24:
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case SF_FORMAT_ALAC_32:
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case 0x0080/*SF_FORMAT_MPEG_LAYER_I*/:
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case 0x0081/*SF_FORMAT_MPEG_LAYER_II*/:
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case 0x0082/*SF_FORMAT_MPEG_LAYER_III*/:
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if(alIsExtensionPresent("AL_EXT_FLOAT32"))
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sample_format = Float;
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break;
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case SF_FORMAT_IMA_ADPCM:
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/* ADPCM formats require setting a block alignment as specified in the
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* file, which needs to be read from the wave 'fmt ' chunk manually
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* since libsndfile doesn't provide it in a format-agnostic way.
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*/
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if(sfinfo.channels <= 2 && (sfinfo.format&SF_FORMAT_TYPEMASK) == SF_FORMAT_WAV
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&& alIsExtensionPresent("AL_EXT_IMA4")
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&& alIsExtensionPresent("AL_SOFT_block_alignment"))
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sample_format = IMA4;
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break;
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case SF_FORMAT_MS_ADPCM:
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if(sfinfo.channels <= 2 && (sfinfo.format&SF_FORMAT_TYPEMASK) == SF_FORMAT_WAV
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&& alIsExtensionPresent("AL_SOFT_MSADPCM")
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&& alIsExtensionPresent("AL_SOFT_block_alignment"))
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sample_format = MSADPCM;
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break;
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}
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if(sample_format == IMA4 || sample_format == MSADPCM)
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{
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/* For ADPCM, lookup the wave file's "fmt " chunk, which is a
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* WAVEFORMATEX-based structure for the audio format.
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*/
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SF_CHUNK_INFO inf = { "fmt ", 4, 0, NULL };
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SF_CHUNK_ITERATOR *iter = sf_get_chunk_iterator(sndfile, &inf);
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/* If there's an issue getting the chunk or block alignment, load as
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* 16-bit and have libsndfile do the conversion.
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*/
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if(!iter || sf_get_chunk_size(iter, &inf) != SF_ERR_NO_ERROR || inf.datalen < 14)
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sample_format = Int16;
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else
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{
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ALubyte *fmtbuf = calloc(inf.datalen, 1);
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inf.data = fmtbuf;
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if(sf_get_chunk_data(iter, &inf) != SF_ERR_NO_ERROR)
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sample_format = Int16;
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else
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{
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/* Read the nBlockAlign field, and convert from bytes- to
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* samples-per-block (verifying it's valid by converting back
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* and comparing to the original value).
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*/
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byteblockalign = fmtbuf[12] | (fmtbuf[13]<<8);
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if(sample_format == IMA4)
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{
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splblockalign = (byteblockalign/sfinfo.channels - 4)/4*8 + 1;
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if(splblockalign < 1
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|| ((splblockalign-1)/2 + 4)*sfinfo.channels != byteblockalign)
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sample_format = Int16;
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}
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else
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{
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splblockalign = (byteblockalign/sfinfo.channels - 7)*2 + 2;
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if(splblockalign < 2
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|| ((splblockalign-2)/2 + 7)*sfinfo.channels != byteblockalign)
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sample_format = Int16;
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}
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}
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free(fmtbuf);
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}
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}
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if(sample_format == Int16)
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{
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splblockalign = 1;
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byteblockalign = sfinfo.channels * 2;
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}
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else if(sample_format == Float)
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{
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splblockalign = 1;
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byteblockalign = sfinfo.channels * 4;
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}
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/* Figure out the OpenAL format from the file and desired sample type. */
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format = AL_NONE;
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if(sfinfo.channels == 1)
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format = AL_FORMAT_MONO16;
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{
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if(sample_format == Int16)
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format = AL_FORMAT_MONO16;
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else if(sample_format == Float)
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format = AL_FORMAT_MONO_FLOAT32;
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else if(sample_format == IMA4)
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format = AL_FORMAT_MONO_IMA4;
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else if(sample_format == MSADPCM)
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format = AL_FORMAT_MONO_MSADPCM_SOFT;
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}
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else if(sfinfo.channels == 2)
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format = AL_FORMAT_STEREO16;
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{
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if(sample_format == Int16)
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format = AL_FORMAT_STEREO16;
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else if(sample_format == Float)
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format = AL_FORMAT_STEREO_FLOAT32;
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else if(sample_format == IMA4)
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format = AL_FORMAT_STEREO_IMA4;
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else if(sample_format == MSADPCM)
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format = AL_FORMAT_STEREO_MSADPCM_SOFT;
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}
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else if(sfinfo.channels == 3)
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{
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if(sf_command(sndfile, SFC_WAVEX_GET_AMBISONIC, NULL, 0) == SF_AMBISONIC_B_FORMAT)
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format = AL_FORMAT_BFORMAT2D_16;
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{
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if(sample_format == Int16)
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format = AL_FORMAT_BFORMAT2D_16;
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else if(sample_format == Float)
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format = AL_FORMAT_BFORMAT2D_FLOAT32;
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}
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}
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else if(sfinfo.channels == 4)
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{
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if(sf_command(sndfile, SFC_WAVEX_GET_AMBISONIC, NULL, 0) == SF_AMBISONIC_B_FORMAT)
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format = AL_FORMAT_BFORMAT3D_16;
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{
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if(sample_format == Int16)
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format = AL_FORMAT_BFORMAT3D_16;
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else if(sample_format == Float)
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format = AL_FORMAT_BFORMAT3D_FLOAT32;
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}
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}
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if(!format)
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{
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@@ -88,10 +223,27 @@ static ALuint LoadSound(const char *filename)
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return 0;
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}
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/* Decode the whole audio file to a buffer. */
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membuf = malloc((size_t)(sfinfo.frames * sfinfo.channels) * sizeof(short));
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if(sfinfo.frames/splblockalign > (sf_count_t)(INT_MAX/byteblockalign))
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{
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fprintf(stderr, "Too many samples in %s (%" PRId64 ")\n", filename, sfinfo.frames);
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sf_close(sndfile);
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return 0;
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}
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num_frames = sf_readf_short(sndfile, membuf, sfinfo.frames);
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/* Decode the whole audio file to a buffer. */
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membuf = malloc((size_t)(sfinfo.frames / splblockalign * byteblockalign));
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if(sample_format == Int16)
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num_frames = sf_readf_short(sndfile, membuf, sfinfo.frames);
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else if(sample_format == Float)
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num_frames = sf_readf_float(sndfile, membuf, sfinfo.frames);
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else
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{
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sf_count_t count = sfinfo.frames / splblockalign * byteblockalign;
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num_frames = sf_read_raw(sndfile, membuf, count);
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if(num_frames > 0)
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num_frames = num_frames / byteblockalign * splblockalign;
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}
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if(num_frames < 1)
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{
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free(membuf);
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@@ -99,19 +251,24 @@ static ALuint LoadSound(const char *filename)
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fprintf(stderr, "Failed to read samples in %s (%" PRId64 ")\n", filename, num_frames);
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return 0;
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}
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num_bytes = (ALsizei)(num_frames * sfinfo.channels) * (ALsizei)sizeof(short);
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num_bytes = (ALsizei)(num_frames / splblockalign * byteblockalign);
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printf("Loading: %s (%s, %dhz)\n", filename, FormatName(format), sfinfo.samplerate);
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fflush(stdout);
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/* Buffer the audio data into a new buffer object, then free the data and
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* close the file.
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*/
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buffer = 0;
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alGenBuffers(1, &buffer);
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if(splblockalign > 1)
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alBufferi(buffer, AL_UNPACK_BLOCK_ALIGNMENT_SOFT, splblockalign);
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alBufferData(buffer, format, membuf, num_bytes, sfinfo.samplerate);
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free(membuf);
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sf_close(sndfile);
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/* Check if an error occured, and clean up if so. */
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/* Check if an error occurred, and clean up if so. */
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err = alGetError();
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if(err != AL_NO_ERROR)
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{
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