|
1 /* |
|
2 * OpenAL Bridge - a simple portable library for OpenAL interface |
|
3 * Copyright (c) 2009 Vittorio Giovara <vittorio.giovara@gmail.com> |
|
4 * |
|
5 * This program is free software; you can redistribute it and/or modify |
|
6 * it under the terms of the GNU Lesser General Public License as published by |
|
7 * the Free Software Foundation; version 2 of the License |
|
8 * |
|
9 * This program is distributed in the hope that it will be useful, |
|
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of |
|
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
|
12 * GNU Lesser General Public License for more details. |
|
13 * |
|
14 * You should have received a copy of the GNU Lesser General Public License |
|
15 * along with this program; if not, write to the Free Software |
|
16 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA |
|
17 */ |
|
18 |
|
19 #include "loaders.h" |
|
20 #include "wrappers.h" |
|
21 #include "vorbis/vorbisfile.h" |
|
22 |
|
23 #ifdef __CPLUSPLUS |
|
24 extern "C" { |
|
25 #endif |
|
26 |
|
27 int load_wavpcm (const char *filename, ALenum *format, char ** data, ALsizei *bitsize, ALsizei *freq) { |
|
28 WAV_header_t WAVHeader; |
|
29 FILE *wavfile; |
|
30 int32_t t; |
|
31 uint32_t n = 0; |
|
32 uint8_t sub0, sub1, sub2, sub3; |
|
33 |
|
34 wavfile = Fopen(filename, "rb"); |
|
35 |
|
36 fread(&WAVHeader.ChunkID, sizeof(uint32_t), 1, wavfile); /*RIFF*/ |
|
37 fread(&WAVHeader.ChunkSize, sizeof(uint32_t), 1, wavfile); |
|
38 fread(&WAVHeader.Format, sizeof(uint32_t), 1, wavfile); /*WAVE*/ |
|
39 |
|
40 #ifdef DEBUG |
|
41 fprintf(stderr, "ChunkID: %X\n", ENDIAN_BIG_32(WAVHeader.ChunkID)); |
|
42 fprintf(stderr, "ChunkSize: %d\n", ENDIAN_LITTLE_32(WAVHeader.ChunkSize)); |
|
43 fprintf(stderr, "Format: %X\n", ENDIAN_BIG_32(WAVHeader.Format)); |
|
44 #endif |
|
45 |
|
46 fread(&WAVHeader.Subchunk1ID, sizeof(uint32_t), 1, wavfile); /*fmt */ |
|
47 fread(&WAVHeader.Subchunk1Size, sizeof(uint32_t), 1, wavfile); |
|
48 fread(&WAVHeader.AudioFormat, sizeof(uint16_t), 1, wavfile); |
|
49 fread(&WAVHeader.NumChannels, sizeof(uint16_t), 1, wavfile); |
|
50 fread(&WAVHeader.SampleRate, sizeof(uint32_t), 1, wavfile); |
|
51 fread(&WAVHeader.ByteRate, sizeof(uint32_t), 1, wavfile); |
|
52 fread(&WAVHeader.BlockAlign, sizeof(uint16_t), 1, wavfile); |
|
53 fread(&WAVHeader.BitsPerSample, sizeof(uint16_t), 1, wavfile); |
|
54 |
|
55 #ifdef DEBUG |
|
56 fprintf(stderr, "Subchunk1ID: %X\n", ENDIAN_BIG_32(WAVHeader.Subchunk1ID)); |
|
57 fprintf(stderr, "Subchunk1Size: %d\n", ENDIAN_LITTLE_32(WAVHeader.Subchunk1Size)); |
|
58 fprintf(stderr, "AudioFormat: %d\n", ENDIAN_LITTLE_16(WAVHeader.AudioFormat)); |
|
59 fprintf(stderr, "NumChannels: %d\n", ENDIAN_LITTLE_16(WAVHeader.NumChannels)); |
|
60 fprintf(stderr, "SampleRate: %d\n", ENDIAN_LITTLE_32(WAVHeader.SampleRate)); |
|
61 fprintf(stderr, "ByteRate: %d\n", ENDIAN_LITTLE_32(WAVHeader.ByteRate)); |
|
62 fprintf(stderr, "BlockAlign: %d\n", ENDIAN_LITTLE_16(WAVHeader.BlockAlign)); |
|
63 fprintf(stderr, "BitsPerSample: %d\n", ENDIAN_LITTLE_16(WAVHeader.BitsPerSample)); |
|
64 #endif |
|
65 |
|
66 /*remove useless header chunks by looking for the WAV_HEADER_SUBCHUNK2ID integer */ |
|
67 do { |
|
68 t = fread(&sub0, sizeof(uint8_t), 1, wavfile); |
|
69 if(sub0 == 0x64) { |
|
70 t = fread(&sub1, sizeof(uint8_t), 1, wavfile); |
|
71 if(sub1 == 0x61) { |
|
72 t = fread(&sub2, sizeof(uint8_t), 1, wavfile); |
|
73 if(sub2 == 0x74) { |
|
74 t = fread(&sub3, sizeof(uint8_t), 1, wavfile); |
|
75 if(sub3 == 0x61) { |
|
76 WAVHeader.Subchunk2ID = WAV_HEADER_SUBCHUNK2ID; |
|
77 break; |
|
78 } |
|
79 } |
|
80 } |
|
81 } |
|
82 |
|
83 if (t <= 0) { |
|
84 /*eof*/ |
|
85 errno = EILSEQ; |
|
86 err_ret("(%s) ERROR - wrong WAV header", prog); |
|
87 return AL_FALSE; |
|
88 } |
|
89 } while (1); |
|
90 |
|
91 fread(&WAVHeader.Subchunk2Size, sizeof(uint32_t), 1, wavfile); |
|
92 |
|
93 #ifdef DEBUG |
|
94 fprintf(stderr, "Subchunk2ID: %X\n", ENDIAN_LITTLE_32(WAVHeader.Subchunk2ID)); |
|
95 fprintf(stderr, "Subchunk2Size: %d\n", ENDIAN_LITTLE_32(WAVHeader.Subchunk2Size)); |
|
96 #endif |
|
97 |
|
98 *data = (char*) Malloc (sizeof(char) * ENDIAN_LITTLE_32(WAVHeader.Subchunk2Size)); |
|
99 |
|
100 /*read the actual sound data*/ |
|
101 do { |
|
102 n += fread(&((*data)[n]), sizeof(uint8_t), 4, wavfile); |
|
103 } while (n < ENDIAN_LITTLE_32(WAVHeader.Subchunk2Size)); |
|
104 |
|
105 fclose(wavfile); |
|
106 |
|
107 #ifdef DEBUG |
|
108 err_msg("(%s) INFO - WAV data loaded", prog); |
|
109 #endif |
|
110 |
|
111 /*set parameters for OpenAL*/ |
|
112 /*Valid formats are AL_FORMAT_MONO8, AL_FORMAT_MONO16, AL_FORMAT_STEREO8, and AL_FORMAT_STEREO16*/ |
|
113 if (ENDIAN_LITTLE_16(WAVHeader.NumChannels) == 1) { |
|
114 if (ENDIAN_LITTLE_16(WAVHeader.BitsPerSample) == 8) |
|
115 *format = AL_FORMAT_MONO8; |
|
116 else { |
|
117 if (ENDIAN_LITTLE_16(WAVHeader.BitsPerSample) == 16) |
|
118 *format = AL_FORMAT_MONO16; |
|
119 else { |
|
120 errno = EILSEQ; |
|
121 err_ret("(%s) ERROR - wrong WAV header [bitsample value]", prog); |
|
122 return AL_FALSE; |
|
123 } |
|
124 } |
|
125 } else { |
|
126 if (ENDIAN_LITTLE_16(WAVHeader.NumChannels) == 2) { |
|
127 if (ENDIAN_LITTLE_16(WAVHeader.BitsPerSample) == 8) |
|
128 *format = AL_FORMAT_STEREO8; |
|
129 else { |
|
130 if (ENDIAN_LITTLE_16(WAVHeader.BitsPerSample) == 16) |
|
131 *format = AL_FORMAT_STEREO16; |
|
132 else { |
|
133 errno = EILSEQ; |
|
134 err_ret("(%s) ERROR - wrong WAV header [bitsample value]", prog); |
|
135 return AL_FALSE; |
|
136 } |
|
137 } |
|
138 } else { |
|
139 errno = EILSEQ; |
|
140 err_ret("(%s) ERROR - wrong WAV header [format value]", prog); |
|
141 return AL_FALSE; |
|
142 } |
|
143 } |
|
144 |
|
145 *bitsize = ENDIAN_LITTLE_32(WAVHeader.Subchunk2Size); |
|
146 *freq = ENDIAN_LITTLE_32(WAVHeader.SampleRate); |
|
147 return AL_TRUE; |
|
148 } |
|
149 |
|
150 |
|
151 int load_oggvorbis (const char *filename, ALenum *format, char **data, ALsizei *bitsize, ALsizei *freq) { |
|
152 /*implementation inspired from http://www.devmaster.net/forums/showthread.php?t=1153 */ |
|
153 |
|
154 /*stream handle*/ |
|
155 OggVorbis_File oggStream; |
|
156 /*some formatting data*/ |
|
157 vorbis_info *vorbisInfo; |
|
158 /*length of the decoded data*/ |
|
159 int64_t pcm_length; |
|
160 /*other vars*/ |
|
161 int section, result, size, endianness; |
|
162 #ifdef DEBUG |
|
163 int i; |
|
164 /*other less useful data*/ |
|
165 vorbis_comment *vorbisComment; |
|
166 #endif |
|
167 |
|
168 result = ov_fopen((char*) filename, &oggStream); |
|
169 if (result < 0) { |
|
170 errno = EINVAL; |
|
171 err_ret("(%s) ERROR - ov_fopen() failed with %X", prog, result); |
|
172 ov_clear(&oggStream); |
|
173 return AL_FALSE; |
|
174 } |
|
175 |
|
176 /*load OGG header and determine the decoded data size*/ |
|
177 vorbisInfo = ov_info(&oggStream, -1); |
|
178 pcm_length = ov_pcm_total(&oggStream, -1) << vorbisInfo->channels; |
|
179 |
|
180 #ifdef DEBUG |
|
181 vorbisComment = ov_comment(&oggStream, -1); |
|
182 fprintf(stderr, "Version: %d\n", vorbisInfo->version); |
|
183 fprintf(stderr, "Channels: %d\n", vorbisInfo->channels); |
|
184 fprintf(stderr, "Rate (Hz): %ld\n", vorbisInfo->rate); |
|
185 fprintf(stderr, "Bitrate Upper: %ld\n", vorbisInfo->bitrate_upper); |
|
186 fprintf(stderr, "Bitrate Nominal: %ld\n", vorbisInfo->bitrate_nominal); |
|
187 fprintf(stderr, "Bitrate Lower: %ld\n", vorbisInfo->bitrate_lower); |
|
188 fprintf(stderr, "Bitrate Windows: %ld\n", vorbisInfo->bitrate_window); |
|
189 fprintf(stderr, "Vendor: %s\n", vorbisComment->vendor); |
|
190 fprintf(stderr, "PCM data size: %lld\n", pcm_length); |
|
191 fprintf(stderr, "# comment: %d\n", vorbisComment->comments); |
|
192 for (i = 0; i < vorbisComment->comments; i++) |
|
193 fprintf(stderr, "\tComment %d: %s\n", i, vorbisComment->user_comments[i]); |
|
194 #endif |
|
195 |
|
196 /*allocates enough room for the decoded data*/ |
|
197 *data = (char*) Malloc (sizeof(char) * pcm_length); |
|
198 |
|
199 /*there *should* not be ogg at 8 bits*/ |
|
200 if (vorbisInfo->channels == 1) |
|
201 *format = AL_FORMAT_MONO16; |
|
202 else { |
|
203 if (vorbisInfo->channels == 2) |
|
204 *format = AL_FORMAT_STEREO16; |
|
205 else { |
|
206 errno = EILSEQ; |
|
207 err_ret("(%s) ERROR - wrong OGG header [channel %d]", prog, vorbisInfo->channels); |
|
208 ov_clear(&oggStream); |
|
209 return AL_FALSE; |
|
210 } |
|
211 } |
|
212 |
|
213 size = 0; |
|
214 #ifdef __LITTLE_ENDIAN__ |
|
215 endianness = 0; |
|
216 #elif __BIG_ENDIAN__ |
|
217 endianness = 1; |
|
218 #endif |
|
219 while (size < pcm_length) { |
|
220 /*ov_read decodes the ogg stream and storse the pcm in data*/ |
|
221 result = ov_read (&oggStream, *data + size, pcm_length - size, endianness, 2, 1, §ion); |
|
222 if (result > 0) { |
|
223 size += result; |
|
224 } else { |
|
225 if (result == 0) |
|
226 break; |
|
227 else { |
|
228 errno = EILSEQ; |
|
229 err_ret("(%s) ERROR - End of file from OGG stream", prog); |
|
230 ov_clear(&oggStream); |
|
231 return AL_FALSE; |
|
232 } |
|
233 } |
|
234 } |
|
235 |
|
236 /*set the last fields*/ |
|
237 *bitsize = size; |
|
238 *freq = vorbisInfo->rate; |
|
239 |
|
240 /*cleaning time*/ |
|
241 ov_clear(&oggStream); |
|
242 |
|
243 return AL_TRUE; |
|
244 } |
|
245 |
|
246 #ifdef __CPLUSPLUS |
|
247 } |
|
248 #endif |