Mercurial > SDL_sound_CoreAudio

comparison decoders/raw.c @ 306:c97be6e1bd27

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Added framework for Sound_Seek() support.
author Ryan C. Gordon <icculus@icculus.org>
date Sun, 21 Apr 2002 18:39:47 +0000
parents c9772a9f5271
children cbb15ecf423a
comparison
equal deleted inserted replaced
305:c345a40a8a99 306:c97be6e1bd27
58 static void RAW_quit(void); 58 static void RAW_quit(void);
59 static int RAW_open(Sound_Sample *sample, const char *ext); 59 static int RAW_open(Sound_Sample *sample, const char *ext);
60 static void RAW_close(Sound_Sample *sample); 60 static void RAW_close(Sound_Sample *sample);
61 static Uint32 RAW_read(Sound_Sample *sample); 61 static Uint32 RAW_read(Sound_Sample *sample);
62 static int RAW_rewind(Sound_Sample *sample); 62 static int RAW_rewind(Sound_Sample *sample);
63 static int RAW_seek(Sound_Sample *sample, Uint32 ms);
63 64
64 static const char *extensions_raw[] = { "RAW", NULL }; 65 static const char *extensions_raw[] = { "RAW", NULL };
65 const Sound_DecoderFunctions __Sound_DecoderFunctions_RAW = 66 const Sound_DecoderFunctions __Sound_DecoderFunctions_RAW =
66 { 67 {
67 { 68 {
74 RAW_init, /* init() method */ 75 RAW_init, /* init() method */
75 RAW_quit, /* quit() method */ 76 RAW_quit, /* quit() method */
76 RAW_open, /* open() method */ 77 RAW_open, /* open() method */
77 RAW_close, /* close() method */ 78 RAW_close, /* close() method */
78 RAW_read, /* read() method */ 79 RAW_read, /* read() method */
79 RAW_rewind /* rewind() method */ 80 RAW_rewind, /* rewind() method */
81 RAW_seek /* seek() method */
80 }; 82 };
81 83
82 84
83 static int RAW_init(void) 85 static int RAW_init(void)
84 { 86 {
121 123
122 /* 124 /*
123 * We never convert raw samples; what you ask for is what you get. 125 * We never convert raw samples; what you ask for is what you get.
124 */ 126 */
125 memcpy(&sample->actual, &sample->desired, sizeof (Sound_AudioInfo)); 127 memcpy(&sample->actual, &sample->desired, sizeof (Sound_AudioInfo));
126 sample->flags = SOUND_SAMPLEFLAG_NONE; 128 sample->flags = SOUND_SAMPLEFLAG_CANSEEK;
127 129
128 return(1); /* we'll handle this data. */ 130 return(1); /* we'll handle this data. */
129 } /* RAW_open */ 131 } /* RAW_open */
130 132
131 133
168 BAIL_IF_MACRO(SDL_RWseek(internal->rw, 0, SEEK_SET) != 0, ERR_IO_ERROR, 0); 170 BAIL_IF_MACRO(SDL_RWseek(internal->rw, 0, SEEK_SET) != 0, ERR_IO_ERROR, 0);
169 return(1); 171 return(1);
170 } /* RAW_rewind */ 172 } /* RAW_rewind */
171 173
172 174
175 static int RAW_seek(Sound_Sample *sample, Uint32 ms)
176 {
177 Sound_SampleInternal *internal = (Sound_SampleInternal *) sample->opaque;
178 int pos = (int) __Sound_convertMsToBytePos(&sample->actual, ms);
179 int err = (SDL_RWseek(internal->rw, pos, SEEK_SET) != pos);
180 BAIL_IF_MACRO(err, ERR_IO_ERROR, 0);
181 return(1);
182 } /* RAW_seek */
183
184
173 #endif /* SOUND_SUPPORTS_RAW */ 185 #endif /* SOUND_SUPPORTS_RAW */
174 186
175 187
176 /* end of raw.c ... */ 188 /* end of raw.c ... */
177 189