diff options
Diffstat (limited to 'example1.c')
| -rw-r--r-- | example1.c | 23 |
1 files changed, 9 insertions, 14 deletions
| @@ -4,9 +4,8 @@ | |||
| 4 | #include "minisdl_audio.h" | 4 | #include "minisdl_audio.h" |
| 5 | 5 | ||
| 6 | //This is a minimal SoundFont with a single loopin saw-wave sample/instrument/preset (484 bytes) | 6 | //This is a minimal SoundFont with a single loopin saw-wave sample/instrument/preset (484 bytes) |
| 7 | const static unsigned char MinimalSoundFont[] = | 7 | const static unsigned char MinimalSoundFont[] = { |
| 8 | { | 8 | #define TEN0 0,0,0,0,0,0,0,0,0,0 |
| 9 | #define TEN0 0,0,0,0,0,0,0,0,0,0 | ||
| 10 | 'R','I','F','F',220,1,0,0,'s','f','b','k', | 9 | 'R','I','F','F',220,1,0,0,'s','f','b','k', |
| 11 | 'L','I','S','T',88,1,0,0,'p','d','t','a', | 10 | 'L','I','S','T',88,1,0,0,'p','d','t','a', |
| 12 | 'p','h','d','r',76,TEN0,TEN0,TEN0,TEN0,0,0,0,0,TEN0,0,0,0,0,0,0,0,255,0,255,0,1,TEN0,0,0,0, | 11 | 'p','h','d','r',76,TEN0,TEN0,TEN0,TEN0,0,0,0,0,TEN0,0,0,0,0,0,0,0,255,0,255,0,1,TEN0,0,0,0, |
| @@ -16,15 +15,14 @@ const static unsigned char MinimalSoundFont[] = | |||
| 16 | 'i','g','e','n',12,0,0,0,54,0,1,0,53,0,0,0,0,0,0,0, | 15 | 'i','g','e','n',12,0,0,0,54,0,1,0,53,0,0,0,0,0,0,0, |
| 17 | 's','h','d','r',92,TEN0,TEN0,0,0,0,0,0,0,0,50,0,0,0,0,0,0,0,49,0,0,0,34,86,0,0,60,0,0,0,1,TEN0,TEN0,TEN0,TEN0,0,0,0,0,0,0,0, | 16 | 's','h','d','r',92,TEN0,TEN0,0,0,0,0,0,0,0,50,0,0,0,0,0,0,0,49,0,0,0,34,86,0,0,60,0,0,0,1,TEN0,TEN0,TEN0,TEN0,0,0,0,0,0,0,0, |
| 18 | 'L','I','S','T',112,0,0,0,'s','d','t','a','s','m','p','l',100,0,0,0,86,0,119,3,31,7,147,10,43,14,169,17,58,21,189,24,73,28,204,31,73,35,249,38,46,42,71,46,250,48,150,53,242,55,126,60,151,63,108,66,126,72,207, | 17 | 'L','I','S','T',112,0,0,0,'s','d','t','a','s','m','p','l',100,0,0,0,86,0,119,3,31,7,147,10,43,14,169,17,58,21,189,24,73,28,204,31,73,35,249,38,46,42,71,46,250,48,150,53,242,55,126,60,151,63,108,66,126,72,207, |
| 19 | 70,86,83,100,72,74,100,163,39,241,163,59,175,59,179,9,179,134,187,6,186,2,194,5,194,15,200,6,202,96,206,159,209,35,213,213,216,45,220,221,223,76,227,221,230,91,234,242,237,105,241,8,245,118,248,32,252 | 18 | 70,86,83,100,72,74,100,163,39,241,163,59,175,59,179,9,179,134,187,6,186,2,194,5,194,15,200,6,202,96,206,159,209,35,213,213,216,45,220,221,223,76,227,221,230,91,234,242,237,105,241,8,245,118,248,32,252 |
| 20 | }; | 19 | }; |
| 21 | 20 | ||
| 22 | // Holds the global instance pointer | 21 | // Holds the global instance pointer |
| 23 | static tsf* g_TinySoundFont; | 22 | static tsf* g_TinySoundFont; |
| 24 | 23 | ||
| 25 | // Callback function called by the audio thread | 24 | // Callback function called by the audio thread |
| 26 | static void AudioCallback(void* data, Uint8 *stream, int len) | 25 | static void AudioCallback(void* data, Uint8 *stream, int len) { |
| 27 | { | ||
| 28 | // Note we don't do any thread concurrency control here because in this | 26 | // Note we don't do any thread concurrency control here because in this |
| 29 | // example all notes are started before the audio playback begins. | 27 | // example all notes are started before the audio playback begins. |
| 30 | // If you do play notes while the audio thread renders output you | 28 | // If you do play notes while the audio thread renders output you |
| @@ -33,8 +31,7 @@ static void AudioCallback(void* data, Uint8 *stream, int len) | |||
| 33 | tsf_render_short(g_TinySoundFont, (short*)stream, SampleCount, 0); | 31 | tsf_render_short(g_TinySoundFont, (short*)stream, SampleCount, 0); |
| 34 | } | 32 | } |
| 35 | 33 | ||
| 36 | int main(int argc, char *argv[]) | 34 | int main(int argc, char *argv[]) { |
| 37 | { | ||
| 38 | // Define the desired audio output format we request | 35 | // Define the desired audio output format we request |
| 39 | SDL_AudioSpec OutputAudioSpec; | 36 | SDL_AudioSpec OutputAudioSpec; |
| 40 | OutputAudioSpec.freq = 44100; | 37 | OutputAudioSpec.freq = 44100; |
| @@ -44,16 +41,14 @@ int main(int argc, char *argv[]) | |||
| 44 | OutputAudioSpec.callback = AudioCallback; | 41 | OutputAudioSpec.callback = AudioCallback; |
| 45 | 42 | ||
| 46 | // Initialize the audio system | 43 | // Initialize the audio system |
| 47 | if (SDL_AudioInit(NULL) < 0) | 44 | if (SDL_AudioInit(NULL) < 0) { |
| 48 | { | ||
| 49 | fprintf(stderr, "Could not initialize audio hardware or driver\n"); | 45 | fprintf(stderr, "Could not initialize audio hardware or driver\n"); |
| 50 | return 1; | 46 | return 1; |
| 51 | } | 47 | } |
| 52 | 48 | ||
| 53 | // Load the SoundFont from the memory block | 49 | // Load the SoundFont from the memory block |
| 54 | g_TinySoundFont = tsf_load_memory(MinimalSoundFont, sizeof(MinimalSoundFont)); | 50 | g_TinySoundFont = tsf_load_memory(MinimalSoundFont, sizeof(MinimalSoundFont)); |
| 55 | if (!g_TinySoundFont) | 51 | if (!g_TinySoundFont) { |
| 56 | { | ||
| 57 | fprintf(stderr, "Could not load soundfont\n"); | 52 | fprintf(stderr, "Could not load soundfont\n"); |
| 58 | return 1; | 53 | return 1; |
| 59 | } | 54 | } |
| @@ -66,8 +61,7 @@ int main(int argc, char *argv[]) | |||
| 66 | tsf_note_on(g_TinySoundFont, 0, 52, 1.0f); //E2 | 61 | tsf_note_on(g_TinySoundFont, 0, 52, 1.0f); //E2 |
| 67 | 62 | ||
| 68 | // Request the desired audio output format | 63 | // Request the desired audio output format |
| 69 | if (SDL_OpenAudio(&OutputAudioSpec, NULL) < 0) | 64 | if (SDL_OpenAudio(&OutputAudioSpec, NULL) < 0) { |
| 70 | { | ||
| 71 | fprintf(stderr, "Could not open the audio hardware or the desired audio output format\n"); | 65 | fprintf(stderr, "Could not open the audio hardware or the desired audio output format\n"); |
| 72 | return 1; | 66 | return 1; |
| 73 | } | 67 | } |
| @@ -84,3 +78,4 @@ int main(int argc, char *argv[]) | |||
| 84 | // because the process ends here. | 78 | // because the process ends here. |
| 85 | return 0; | 79 | return 0; |
| 86 | } | 80 | } |
| 81 | |||
