diff -r a501f5ec7b34 -r 0f5961910e27 misc/libopenalbridge/loaders.c --- a/misc/libopenalbridge/loaders.c Tue Jul 16 11:14:27 2013 +0200 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000 @@ -1,238 +0,0 @@ -/* -* OpenAL Bridge - a simple portable library for OpenAL interface -* Copyright (c) 2009 Vittorio Giovara -* -* This program is free software; you can redistribute it and/or modify -* it under the terms of the GNU Lesser General Public License as published by -* the Free Software Foundation; version 2 of the License -* -* This program is distributed in the hope that it will be useful, -* but WITHOUT ANY WARRANTY; without even the implied warranty of -* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -* GNU Lesser General Public License for more details. -* -* You should have received a copy of the GNU Lesser General Public License -* along with this program; if not, write to the Free Software -* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA -*/ - -#include "loaders.h" -#include "wrappers.h" -#include "vorbis/vorbisfile.h" -#include "openalbridge_t.h" - - -int load_wavpcm (const char *filename, ALenum *format, char **data, ALsizei *bitsize, ALsizei *freq) { - WAV_header_t WAVHeader; - FILE *wavfile; - int32_t t; - uint32_t n = 0; - uint8_t sub0, sub1, sub2, sub3; - - wavfile = Fopen(filename, "rb"); - - fread(&WAVHeader.ChunkID, sizeof(uint32_t), 1, wavfile); /*RIFF*/ - fread(&WAVHeader.ChunkSize, sizeof(uint32_t), 1, wavfile); - fread(&WAVHeader.Format, sizeof(uint32_t), 1, wavfile); /*WAVE*/ - -#ifdef DEBUG - fprintf(stderr, "ChunkID: %X\n", ENDIAN_BIG_32(WAVHeader.ChunkID)); - fprintf(stderr, "ChunkSize: %d\n", ENDIAN_LITTLE_32(WAVHeader.ChunkSize)); - fprintf(stderr, "Format: %X\n", ENDIAN_BIG_32(WAVHeader.Format)); -#endif - - fread(&WAVHeader.Subchunk1ID, sizeof(uint32_t), 1, wavfile); /*fmt */ - fread(&WAVHeader.Subchunk1Size, sizeof(uint32_t), 1, wavfile); - fread(&WAVHeader.AudioFormat, sizeof(uint16_t), 1, wavfile); - fread(&WAVHeader.NumChannels, sizeof(uint16_t), 1, wavfile); - fread(&WAVHeader.SampleRate, sizeof(uint32_t), 1, wavfile); - fread(&WAVHeader.ByteRate, sizeof(uint32_t), 1, wavfile); - fread(&WAVHeader.BlockAlign, sizeof(uint16_t), 1, wavfile); - fread(&WAVHeader.BitsPerSample, sizeof(uint16_t), 1, wavfile); - -#ifdef DEBUG - fprintf(stderr, "Subchunk1ID: %X\n", ENDIAN_BIG_32(WAVHeader.Subchunk1ID)); - fprintf(stderr, "Subchunk1Size: %d\n", ENDIAN_LITTLE_32(WAVHeader.Subchunk1Size)); - fprintf(stderr, "AudioFormat: %d\n", ENDIAN_LITTLE_16(WAVHeader.AudioFormat)); - fprintf(stderr, "NumChannels: %d\n", ENDIAN_LITTLE_16(WAVHeader.NumChannels)); - fprintf(stderr, "SampleRate: %d\n", ENDIAN_LITTLE_32(WAVHeader.SampleRate)); - fprintf(stderr, "ByteRate: %d\n", ENDIAN_LITTLE_32(WAVHeader.ByteRate)); - fprintf(stderr, "BlockAlign: %d\n", ENDIAN_LITTLE_16(WAVHeader.BlockAlign)); - fprintf(stderr, "BitsPerSample: %d\n", ENDIAN_LITTLE_16(WAVHeader.BitsPerSample)); -#endif - - /*remove useless header chunks by looking for the WAV_HEADER_SUBCHUNK2ID integer */ - do { - t = fread(&sub0, sizeof(uint8_t), 1, wavfile); - if(sub0 == 0x64) { - t = fread(&sub1, sizeof(uint8_t), 1, wavfile); - if(sub1 == 0x61) { - t = fread(&sub2, sizeof(uint8_t), 1, wavfile); - if(sub2 == 0x74) { - t = fread(&sub3, sizeof(uint8_t), 1, wavfile); - if(sub3 == 0x61) { - WAVHeader.Subchunk2ID = WAV_HEADER_SUBCHUNK2ID; - break; - } - } - } - } - - if (t <= 0) { - // eof - fprintf(stderr,"(Bridge Error) - wrong WAV header\n"); - return -1; - } - } while (1); - - fread(&WAVHeader.Subchunk2Size, sizeof(uint32_t), 1, wavfile); - -#ifdef DEBUG - fprintf(stderr, "Subchunk2ID: %X\n", ENDIAN_LITTLE_32(WAVHeader.Subchunk2ID)); - fprintf(stderr, "Subchunk2Size: %d\n", ENDIAN_LITTLE_32(WAVHeader.Subchunk2Size)); -#endif - - *data = (char*) Malloc (sizeof(char) * ENDIAN_LITTLE_32(WAVHeader.Subchunk2Size)); - - /*read the actual sound data*/ - do { - n += fread(&((*data)[n]), sizeof(uint8_t), 4, wavfile); - } while (n < ENDIAN_LITTLE_32(WAVHeader.Subchunk2Size)); - - fclose(wavfile); - -#ifdef DEBUG - fprintf(stderr,"(Bridge Info) - WAV data loaded\n"); -#endif - - /*set parameters for OpenAL*/ - /*Valid formats are AL_FORMAT_MONO8, AL_FORMAT_MONO16, AL_FORMAT_STEREO8, and AL_FORMAT_STEREO16*/ - if (ENDIAN_LITTLE_16(WAVHeader.NumChannels) == 1) { - if (ENDIAN_LITTLE_16(WAVHeader.BitsPerSample) == 8) - *format = AL_FORMAT_MONO8; - else { - if (ENDIAN_LITTLE_16(WAVHeader.BitsPerSample) == 16) - *format = AL_FORMAT_MONO16; - else { - fprintf(stderr,"(Bridge Error) - wrong WAV header [bitsample value]\n"); - return -2; - } - } - } else { - if (ENDIAN_LITTLE_16(WAVHeader.NumChannels) == 2) { - if (ENDIAN_LITTLE_16(WAVHeader.BitsPerSample) == 8) - *format = AL_FORMAT_STEREO8; - else { - if (ENDIAN_LITTLE_16(WAVHeader.BitsPerSample) == 16) - *format = AL_FORMAT_STEREO16; - else { - fprintf(stderr,"(Bridge Error) - wrong WAV header [bitsample value]\n"); - return -2; - } - } - } else { - fprintf(stderr,"(Bridge Error) - wrong WAV header [format value]\n"); - return -2; - } - } - - *bitsize = ENDIAN_LITTLE_32(WAVHeader.Subchunk2Size); - *freq = ENDIAN_LITTLE_32(WAVHeader.SampleRate); - return 0; -} - - -int load_oggvorbis (const char *filename, ALenum *format, char **data, ALsizei *bitsize, ALsizei *freq) { - /*implementation inspired from http://www.devmaster.net/forums/showthread.php?t=1153 */ - - /*ogg handle*/ - FILE *oggFile; - /*stream handle*/ - OggVorbis_File oggStream; - /*some formatting data*/ - vorbis_info *vorbisInfo; - /*length of the decoded data*/ - int64_t pcm_length; - /*other vars*/ - int section, result, size, endianness; -#ifdef DEBUG - int i; - /*other less useful data*/ - vorbis_comment *vorbisComment; -#endif - - oggFile = Fopen(filename, "rb"); - result = ov_open_callbacks(oggFile, &oggStream, NULL, 0, OV_CALLBACKS_DEFAULT); - if (result < 0) { - fprintf(stderr,"(Bridge Error) - ov_open_callbacks() failed with %X\n", result); - ov_clear(&oggStream); - return -1; - } - - /*load OGG header and determine the decoded data size*/ - vorbisInfo = ov_info(&oggStream, -1); - pcm_length = ov_pcm_total(&oggStream, -1) << vorbisInfo->channels; - -#ifdef DEBUG - vorbisComment = ov_comment(&oggStream, -1); - fprintf(stderr, "Version: %d\n", vorbisInfo->version); - fprintf(stderr, "Channels: %d\n", vorbisInfo->channels); - fprintf(stderr, "Rate (Hz): %ld\n", vorbisInfo->rate); - fprintf(stderr, "Bitrate Upper: %ld\n", vorbisInfo->bitrate_upper); - fprintf(stderr, "Bitrate Nominal: %ld\n", vorbisInfo->bitrate_nominal); - fprintf(stderr, "Bitrate Lower: %ld\n", vorbisInfo->bitrate_lower); - fprintf(stderr, "Bitrate Windows: %ld\n", vorbisInfo->bitrate_window); - fprintf(stderr, "Vendor: %s\n", vorbisComment->vendor); - fprintf(stderr, "PCM data size: %lld\n", pcm_length); - fprintf(stderr, "# comment: %d\n", vorbisComment->comments); - for (i = 0; i < vorbisComment->comments; i++) - fprintf(stderr, "\tComment %d: %s\n", i, vorbisComment->user_comments[i]); -#endif - - /*allocates enough room for the decoded data*/ - *data = (char*) Malloc (sizeof(char) * pcm_length); - - /*there *should* not be ogg at 8 bits*/ - if (vorbisInfo->channels == 1) - *format = AL_FORMAT_MONO16; - else { - if (vorbisInfo->channels == 2) - *format = AL_FORMAT_STEREO16; - else { - fprintf(stderr,"(Bridge Error) - wrong OGG header [channel %d]\n", vorbisInfo->channels); - ov_clear(&oggStream); - return -2; - } - } - - size = 0; -#ifdef __LITTLE_ENDIAN__ - endianness = 0; -#elif __BIG_ENDIAN__ - endianness = 1; -#endif - while (size < pcm_length) { - /*ov_read decodes the ogg stream and storse the pcm in data*/ - result = ov_read (&oggStream, *data + size, pcm_length - size, endianness, 2, 1, §ion); - if (result > 0) { - size += result; - } else { - if (result == 0) - break; - else { - fprintf(stderr,"(Bridge Error) - End of file from OGG stream\n"); - ov_clear(&oggStream); - return -3; - } - } - } - - /*set the last fields*/ - *bitsize = size; - *freq = vorbisInfo->rate; - - /*cleaning time (ov_clear also closes file handler)*/ - ov_clear(&oggStream); - - return 0; -}