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openalbridge/loaders.c
changeset 2259 ca42efdce3ce
parent 2257 7eb31efcfb9b
child 2260 31756e21c436
equal deleted inserted replaced
2258:3dd028604cfd 2259:ca42efdce3ce 
    19 #include "loaders.h"
 
    19 #include "loaders.h"
 
    20 
    20 
    21 #ifdef __CPLUSPLUS
 
    21 #ifdef __CPLUSPLUS
 
    22 extern "C" {
 
    22 extern "C" {
 
    23 #endif 
    23 #endif 
    24 	
    24     
    25 	int load_wavpcm (const char *filename, ALenum *format, char ** data, ALsizei *bitsize, ALsizei *freq) {
 
    25     int load_wavpcm (const char *filename, ALenum *format, char ** data, ALsizei *bitsize, ALsizei *freq) {
 
    26 		WAV_header_t WAVHeader;
 
    26         WAV_header_t WAVHeader;
 
    27 		FILE *wavfile;
 
    27         FILE *wavfile;
 
    28 		int32_t t;
 
    28         int32_t t;
 
    29 		uint32_t n = 0;
 
    29         uint32_t n = 0;
 
    30 		
    30         
    31 		wavfile = Fopen(filename, "rb");
 
    31         wavfile = Fopen(filename, "rb");
 
    32 		
    32         
    33 		fread(&WAVHeader.ChunkID, sizeof(uint32_t), 1, wavfile);
 
    33         fread(&WAVHeader.ChunkID, sizeof(uint32_t), 1, wavfile);
 
    34 		fread(&WAVHeader.ChunkSize, sizeof(uint32_t), 1, wavfile);
 
    34         fread(&WAVHeader.ChunkSize, sizeof(uint32_t), 1, wavfile);
 
    35 		fread(&WAVHeader.Format, sizeof(uint32_t), 1, wavfile);
 
    35         fread(&WAVHeader.Format, sizeof(uint32_t), 1, wavfile);
 
    36 		
    36         
    37 #ifdef DEBUG
 
    37 #ifdef DEBUG
 
    38 		fprintf(stderr, "ChunkID: %X\n", invert_endianness(WAVHeader.ChunkID));
 
    38         fprintf(stderr, "ChunkID: %X\n", invert_endianness(WAVHeader.ChunkID));
 
    39 		fprintf(stderr, "ChunkSize: %d\n", WAVHeader.ChunkSize);
 
    39         fprintf(stderr, "ChunkSize: %d\n", WAVHeader.ChunkSize);
 
    40 		fprintf(stderr, "Format: %X\n", invert_endianness(WAVHeader.Format));
 
    40         fprintf(stderr, "Format: %X\n", invert_endianness(WAVHeader.Format));
 
    41 #endif
 
    41 #endif
 
    42 		
    42         
    43 		fread(&WAVHeader.Subchunk1ID, sizeof(uint32_t), 1, wavfile);
 
    43         fread(&WAVHeader.Subchunk1ID, sizeof(uint32_t), 1, wavfile);
 
    44 		fread(&WAVHeader.Subchunk1Size, sizeof(uint32_t), 1, wavfile);
 
    44         fread(&WAVHeader.Subchunk1Size, sizeof(uint32_t), 1, wavfile);
 
    45 		fread(&WAVHeader.AudioFormat, sizeof(uint16_t), 1, wavfile);
 
    45         fread(&WAVHeader.AudioFormat, sizeof(uint16_t), 1, wavfile);
 
    46 		fread(&WAVHeader.NumChannels, sizeof(uint16_t), 1, wavfile);
 
    46         fread(&WAVHeader.NumChannels, sizeof(uint16_t), 1, wavfile);
 
    47 		fread(&WAVHeader.SampleRate, sizeof(uint32_t), 1, wavfile);
 
    47         fread(&WAVHeader.SampleRate, sizeof(uint32_t), 1, wavfile);
 
    48 		fread(&WAVHeader.ByteRate, sizeof(uint32_t), 1, wavfile);
 
    48         fread(&WAVHeader.ByteRate, sizeof(uint32_t), 1, wavfile);
 
    49 		fread(&WAVHeader.BlockAlign, sizeof(uint16_t), 1, wavfile);
 
    49         fread(&WAVHeader.BlockAlign, sizeof(uint16_t), 1, wavfile);
 
    50 		fread(&WAVHeader.BitsPerSample, sizeof(uint16_t), 1, wavfile);
 
    50         fread(&WAVHeader.BitsPerSample, sizeof(uint16_t), 1, wavfile);
 
    51 		
    51         
    52 #ifdef DEBUG
 
    52 #ifdef DEBUG
 
    53 		fprintf(stderr, "Subchunk1ID: %X\n", invert_endianness(WAVHeader.Subchunk1ID));
 
    53         fprintf(stderr, "Subchunk1ID: %X\n", invert_endianness(WAVHeader.Subchunk1ID));
 
    54 		fprintf(stderr, "Subchunk1Size: %d\n", WAVHeader.Subchunk1Size);
 
    54         fprintf(stderr, "Subchunk1Size: %d\n", WAVHeader.Subchunk1Size);
 
    55 		fprintf(stderr, "AudioFormat: %d\n", WAVHeader.AudioFormat);
 
    55         fprintf(stderr, "AudioFormat: %d\n", WAVHeader.AudioFormat);
 
    56 		fprintf(stderr, "NumChannels: %d\n", WAVHeader.NumChannels);
 
    56         fprintf(stderr, "NumChannels: %d\n", WAVHeader.NumChannels);
 
    57 		fprintf(stderr, "SampleRate: %d\n", WAVHeader.SampleRate);
 
    57         fprintf(stderr, "SampleRate: %d\n", WAVHeader.SampleRate);
 
    58 		fprintf(stderr, "ByteRate: %d\n", WAVHeader.ByteRate);
 
    58         fprintf(stderr, "ByteRate: %d\n", WAVHeader.ByteRate);
 
    59 		fprintf(stderr, "BlockAlign: %d\n", WAVHeader.BlockAlign);
 
    59         fprintf(stderr, "BlockAlign: %d\n", WAVHeader.BlockAlign);
 
    60 		fprintf(stderr, "BitsPerSample: %d\n", WAVHeader.BitsPerSample);
 
    60         fprintf(stderr, "BitsPerSample: %d\n", WAVHeader.BitsPerSample);
 
    61 #endif
 
    61 #endif
 
    62 		
    62         
    63 		do { /*remove useless header chunks (plenty room for improvements)*/
 
    63         do { /*remove useless header chunks (plenty room for improvements)*/
 
    64 			t = fread(&WAVHeader.Subchunk2ID, sizeof(uint32_t), 1, wavfile);
 
    64             t = fread(&WAVHeader.Subchunk2ID, sizeof(uint32_t), 1, wavfile);
 
    65 			if (invert_endianness(WAVHeader.Subchunk2ID) == 0x64617461)
 
    65             if (invert_endianness(WAVHeader.Subchunk2ID) == 0x64617461)
 
    66 				break;
 
    66                 break;
 
    67 			if (t <= 0) { /*eof*/
 
    67             if (t <= 0) { /*eof*/
 
    68 				fprintf(stderr, "ERROR: wrong WAV header\n");
 
    68                 fprintf(stderr, "ERROR: wrong WAV header\n");
 
    69 				return AL_FALSE;
 
    69                 return AL_FALSE;
 
    70 			}
 
    70             }
 
    71 		} while (1);
 
    71         } while (1);
 
    72 		fread(&WAVHeader.Subchunk2Size, sizeof(uint32_t), 1, wavfile);
 
    72         fread(&WAVHeader.Subchunk2Size, sizeof(uint32_t), 1, wavfile);
 
    73 		
    73         
    74 #ifdef DEBUG
 
    74 #ifdef DEBUG
 
    75 		fprintf(stderr, "Subchunk2ID: %X\n", invert_endianness(WAVHeader.Subchunk2ID));
 
    75         fprintf(stderr, "Subchunk2ID: %X\n", invert_endianness(WAVHeader.Subchunk2ID));
 
    76 		fprintf(stderr, "Subchunk2Size: %d\n", WAVHeader.Subchunk2Size);
 
    76         fprintf(stderr, "Subchunk2Size: %d\n", WAVHeader.Subchunk2Size);
 
    77 #endif
 
    77 #endif
 
    78 		
    78         
    79 		*data = (char*) Malloc (sizeof(char) * WAVHeader.Subchunk2Size);
 
    79         *data = (char*) Malloc (sizeof(char) * WAVHeader.Subchunk2Size);
 
    80 		
    80         
    81 		/*this could be improved*/
 
    81         /*this could be improved*/
 
    82 		do {
 
    82         do {
 
    83 			n += fread(&((*data)[n]), sizeof(uint8_t), 1, wavfile);
 
    83             n += fread(&((*data)[n]), sizeof(uint8_t), 1, wavfile);
 
    84 		} while (n < WAVHeader.Subchunk2Size);
 
    84         } while (n < WAVHeader.Subchunk2Size);
 
    85 		
    85         
    86 		fclose(wavfile);	
    86         fclose(wavfile);	
    87 		
    87         
    88 #ifdef DEBUG
 
    88 #ifdef DEBUG
 
    89 		fprintf(stderr, "Last two bytes of data: %X%X\n", (*data)[n-2], (*data)[n-1]);
 
    89         fprintf(stderr, "Last two bytes of data: %X%X\n", (*data)[n-2], (*data)[n-1]);
 
    90 #endif
 
    90 #endif
 
    91 		
    91         
    92 		/*remaining parameters*/
 
    92         /*remaining parameters*/
 
    93 		/*Valid formats are AL_FORMAT_MONO8, AL_FORMAT_MONO16, AL_FORMAT_STEREO8, and AL_FORMAT_STEREO16*/
 
    93         /*Valid formats are AL_FORMAT_MONO8, AL_FORMAT_MONO16, AL_FORMAT_STEREO8, and AL_FORMAT_STEREO16*/
 
    94 		if (WAVHeader.NumChannels == 1) {
 
    94         if (WAVHeader.NumChannels == 1) {
 
    95 			if (WAVHeader.BitsPerSample == 8)
 
    95             if (WAVHeader.BitsPerSample == 8)
 
    96 				*format = AL_FORMAT_MONO8;
 
    96                 *format = AL_FORMAT_MONO8;
 
    97 			else {
 
    97             else {
 
    98 				if (WAVHeader.BitsPerSample == 16)
 
    98                 if (WAVHeader.BitsPerSample == 16)
 
    99 					*format = AL_FORMAT_MONO16;
 
    99                     *format = AL_FORMAT_MONO16;
 
   100 				else {
 
   100                 else {
 
   101 					fprintf(stderr, "ERROR: wrong WAV header - bitsample value\n");
 
   101                     fprintf(stderr, "ERROR: wrong WAV header - bitsample value\n");
 
   102 					return AL_FALSE;
 
   102                     return AL_FALSE;
 
   103 				}
 
   103                 }
 
   104 			} 
   104             } 
   105 		} else {
 
   105         } else {
 
   106 			if (WAVHeader.NumChannels == 2) {
 
   106             if (WAVHeader.NumChannels == 2) {
 
   107 				if (WAVHeader.BitsPerSample == 8)
 
   107                 if (WAVHeader.BitsPerSample == 8)
 
   108 					*format = AL_FORMAT_STEREO8;
 
   108                     *format = AL_FORMAT_STEREO8;
 
   109 				else {
 
   109                 else {
 
   110 					if (WAVHeader.BitsPerSample == 16)
 
   110                     if (WAVHeader.BitsPerSample == 16)
 
   111 						*format = AL_FORMAT_STEREO16;
 
   111                         *format = AL_FORMAT_STEREO16;
 
   112 					else {
 
   112                     else {
 
   113 						fprintf(stderr, "ERROR: wrong WAV header - bitsample value\n");
 
   113                         fprintf(stderr, "ERROR: wrong WAV header - bitsample value\n");
 
   114 						return AL_FALSE;
 
   114                         return AL_FALSE;
 
   115 					}				
   115                     }				
   116 				}
 
   116                 }
 
   117 			} else {
 
   117             } else {
 
   118 				fprintf(stderr, "ERROR: wrong WAV header - format value\n");
 
   118                 fprintf(stderr, "ERROR: wrong WAV header - format value\n");
 
   119 				return AL_FALSE;
 
   119                 return AL_FALSE;
 
   120 			}
 
   120             }
 
   121 		}
 
   121         }
 
   122 		
   122         
   123 		*bitsize = WAVHeader.Subchunk2Size;
 
   123         *bitsize = WAVHeader.Subchunk2Size;
 
   124 		*freq = WAVHeader.SampleRate;
 
   124         *freq = WAVHeader.SampleRate;
 
   125 		return AL_TRUE;
 
   125         return AL_TRUE;
 
   126 	}
 
   126     }
 
   127 	
   127     
   128     
   128     
   129 	int load_oggvorbis (const char *filename, ALenum *format, char **data, ALsizei *bitsize, ALsizei *freq) {
 
   129     int load_oggvorbis (const char *filename, ALenum *format, char **data, ALsizei *bitsize, ALsizei *freq) {
 
   130 		/*implementation inspired from http://www.devmaster.net/forums/showthread.php?t=1153 */
 
   130         /*implementation inspired from http://www.devmaster.net/forums/showthread.php?t=1153 */
 
   131 		FILE			*oggFile;		/*ogg handle*/
 
   131         FILE		*oggFile;		/*ogg handle*/
 
   132 		OggVorbis_File  oggStream;		/*stream handle*/
 
   132         OggVorbis_File  oggStream;		/*stream handle*/
 
   133 		vorbis_info		*vorbisInfo;	/*some formatting data*/
 
   133         vorbis_info	*vorbisInfo;	/*some formatting data*/
 
   134 		int64_t			pcm_length;		/*length of the decoded data*/
 
   134         int64_t		pcm_length;		/*length of the decoded data*/
 
   135 		int size = 0;
 
   135         int size = 0;
 
   136 		int section, result;
 
   136         int section, result;
 
   137 #ifdef DEBUG
 
   137 #ifdef DEBUG
 
   138 		int i;
 
   138         int i;
 
   139 		vorbis_comment	*vorbisComment;	/*other less useful data*/
 
   139         vorbis_comment	*vorbisComment;	/*other less useful data*/
 
   140 #endif
 
   140 #endif
 
   141 		
   141         
   142 		oggFile = Fopen(filename, "rb");
 
   142         oggFile = Fopen(filename, "rb");
 
   143 		result = ov_open(oggFile, &oggStream, NULL, 0);	/*TODO: check returning value of result*/
 
   143         result = ov_open(oggFile, &oggStream, NULL, 0);	/*TODO: check returning value of result*/
 
   144                 fclose(oggFile);
 
   144         fclose(oggFile);
 
   145             
   145         
   146 		vorbisInfo = ov_info(&oggStream, -1);
 
   146         vorbisInfo = ov_info(&oggStream, -1);
 
   147 		pcm_length = ov_pcm_total(&oggStream, -1) << vorbisInfo->channels;	
   147         pcm_length = ov_pcm_total(&oggStream, -1) << vorbisInfo->channels;	
   148 		
   148         
   149 #ifdef DEBUG
 
   149 #ifdef DEBUG
 
   150 		vorbisComment = ov_comment(&oggStream, -1);
 
   150         vorbisComment = ov_comment(&oggStream, -1);
 
   151 		fprintf(stderr, "Version: %d\n", vorbisInfo->version);
 
   151         fprintf(stderr, "Version: %d\n", vorbisInfo->version);
 
   152 		fprintf(stderr, "Channels: %d\n", vorbisInfo->channels);
 
   152         fprintf(stderr, "Channels: %d\n", vorbisInfo->channels);
 
   153 		fprintf(stderr, "Rate (Hz): %ld\n", vorbisInfo->rate);
 
   153         fprintf(stderr, "Rate (Hz): %ld\n", vorbisInfo->rate);
 
   154 		fprintf(stderr, "Bitrate Upper: %ld\n", vorbisInfo->bitrate_upper);
 
   154         fprintf(stderr, "Bitrate Upper: %ld\n", vorbisInfo->bitrate_upper);
 
   155 		fprintf(stderr, "Bitrate Nominal: %ld\n", vorbisInfo->bitrate_nominal);
 
   155         fprintf(stderr, "Bitrate Nominal: %ld\n", vorbisInfo->bitrate_nominal);
 
   156 		fprintf(stderr, "Bitrate Lower: %ld\n", vorbisInfo->bitrate_lower);
 
   156         fprintf(stderr, "Bitrate Lower: %ld\n", vorbisInfo->bitrate_lower);
 
   157 		fprintf(stderr, "Bitrate Windows: %ld\n", vorbisInfo->bitrate_window);
 
   157         fprintf(stderr, "Bitrate Windows: %ld\n", vorbisInfo->bitrate_window);
 
   158 		fprintf(stderr, "Vendor: %s\n", vorbisComment->vendor);
 
   158         fprintf(stderr, "Vendor: %s\n", vorbisComment->vendor);
 
   159 		fprintf(stderr, "PCM data size: %lld\n", pcm_length);
 
   159         fprintf(stderr, "PCM data size: %lld\n", pcm_length);
 
   160 		fprintf(stderr, "# comment: %d\n", vorbisComment->comments);
 
   160         fprintf(stderr, "# comment: %d\n", vorbisComment->comments);
 
   161 		for (i = 0; i < vorbisComment->comments; i++)
 
   161         for (i = 0; i < vorbisComment->comments; i++)
 
   162 			fprintf(stderr, "\tComment %d: %s\n", i, vorbisComment->user_comments[i]);
 
   162             fprintf(stderr, "\tComment %d: %s\n", i, vorbisComment->user_comments[i]);
 
   163 #endif
 
   163 #endif
 
   164 		
   164         
   165 		/*allocates enough room for the decoded data*/
 
   165         /*allocates enough room for the decoded data*/
 
   166 		*data = (char*) Malloc (sizeof(char) * pcm_length);
 
   166         *data = (char*) Malloc (sizeof(char) * pcm_length);
 
   167 		
   167         
   168 		/*there *should* not be ogg at 8 bits*/
 
   168         /*there *should* not be ogg at 8 bits*/
 
   169 		if (vorbisInfo->channels == 1)
 
   169         if (vorbisInfo->channels == 1)
 
   170 			*format = AL_FORMAT_MONO16;
 
   170             *format = AL_FORMAT_MONO16;
 
   171 		else {
 
   171         else {
 
   172 			if (vorbisInfo->channels == 2)
 
   172             if (vorbisInfo->channels == 2)
 
   173 				*format = AL_FORMAT_STEREO16;
 
   173                 *format = AL_FORMAT_STEREO16;
 
   174 			else {
 
   174             else {
 
   175 				fprintf(stderr, "ERROR: wrong OGG header - channel value (%d)\n", vorbisInfo->channels);
 
   175                 fprintf(stderr, "ERROR: wrong OGG header - channel value (%d)\n", vorbisInfo->channels);
 
   176 				return AL_FALSE;
 
   176                 return AL_FALSE;
 
   177 			}
 
   177             }
 
   178 		}
 
   178         }
 
   179 		
   179         
   180 		while(size < pcm_length) {
 
   180         while(size < pcm_length) {
 
   181 			/*ov_read decodes the ogg stream and storse the pcm in data*/
 
   181             /*ov_read decodes the ogg stream and storse the pcm in data*/
 
   182 			result = ov_read (&oggStream, *data + size, pcm_length - size, 0, 2, 1, &section);
 
   182             result = ov_read (&oggStream, *data + size, pcm_length - size, 0, 2, 1, &section);
 
   183 			if(result > 0) {
 
   183             if(result > 0) {
 
   184 				size += result;
 
   184                 size += result;
 
   185 			} else {
 
   185             } else {
 
   186 				if (result == 0)
 
   186                 if (result == 0)
 
   187 					break;
 
   187                     break;
 
   188 				else { 
   188                 else { 
   189 					fprintf(stderr, "ERROR: end of file from OGG stream\n");
 
   189                     fprintf(stderr, "ERROR: end of file from OGG stream\n");
 
   190 					return AL_FALSE;
 
   190                     return AL_FALSE;
 
   191 				}
 
   191                 }
 
   192 			}
 
   192             }
 
   193 		}
 
   193         }
 
   194 		
   194         
   195 		/*records the last fields*/
 
   195         /*records the last fields*/
 
   196 		*bitsize = size;
 
   196         *bitsize = size;
 
   197 		*freq    = vorbisInfo->rate;
 
   197         *freq    = vorbisInfo->rate;
 
   198             
   198         
   199                 ov_clear (&oggStream);
 
   199         ov_clear (&oggStream);
 
   200 		return AL_TRUE;
 
   200         return AL_TRUE;
 
   201 	}
 
   201     }
 
   202 	
   202     
   203 #ifdef __CPLUSPLUS
 
   203 #ifdef __CPLUSPLUS
 
   204 }
 
   204 }
 
   205 #endif	
   205 #endif
hedgewars