diff options
| -rw-r--r-- | src/main.c | 2 | ||||
| -rw-r--r-- | src/task.c | 26 | ||||
| -rw-r--r-- | tools/aif2pcm/main.c | 27 |
3 files changed, 33 insertions, 22 deletions
diff --git a/src/main.c b/src/main.c index f0ad4ce94..992d23ead 100644 --- a/src/main.c +++ b/src/main.c @@ -298,7 +298,7 @@ void InitIntrHandlers(void) REG_IME = 1; - EnableInterrupts(0x1); + EnableInterrupts(INTR_FLAG_VBLANK); } void SetVBlankCallback(IntrCallback callback) diff --git a/src/task.c b/src/task.c index a97496009..3a3ddadfd 100644 --- a/src/task.c +++ b/src/task.c @@ -136,32 +136,20 @@ void TaskDummy(u8 taskId) { } -#define TASK_DATA_OP(taskId, offset, op) \ -{ \ - u32 tasksAddr = (u32)gTasks; \ - u32 addr = taskId * sizeof(struct Task) + offset; \ - u32 dataAddr = tasksAddr + offsetof(struct Task, data); \ - addr += dataAddr; \ - op; \ -} - void SetTaskFuncWithFollowupFunc(u8 taskId, TaskFunc func, TaskFunc followupFunc) { - TASK_DATA_OP(taskId, 28, *((u16 *)addr) = (u32)followupFunc) - TASK_DATA_OP(taskId, 30, *((u16 *)addr) = (u32)followupFunc >> 16) + u8 followupFuncIndex = NUM_TASK_DATA - 2; // Should be const. + + gTasks[taskId].data[followupFuncIndex] = (s16)((u32)followupFunc); + gTasks[taskId].data[followupFuncIndex + 1] = (s16)((u32)followupFunc >> 16); // Store followupFunc as two half-words in the data array. gTasks[taskId].func = func; } void SwitchTaskToFollowupFunc(u8 taskId) { - s32 func; - - gTasks[taskId].func = NULL; - - TASK_DATA_OP(taskId, 28, func = *((u16 *)addr)) - TASK_DATA_OP(taskId, 30, func |= *((s16 *)addr) << 16) + u8 followupFuncIndex = NUM_TASK_DATA - 2; // Should be const. - gTasks[taskId].func = (TaskFunc)func; + gTasks[taskId].func = (TaskFunc)((u16)(gTasks[taskId].data[followupFuncIndex]) | (gTasks[taskId].data[followupFuncIndex + 1] << 16)); } bool8 FuncIsActiveTask(TaskFunc func) @@ -183,7 +171,7 @@ u8 FindTaskIdByFunc(TaskFunc func) if (gTasks[i].isActive == TRUE && gTasks[i].func == func) return (u8)i; - return 0xFF; + return TAIL_SENTINEL; // No task was found. } u8 GetTaskCount(void) diff --git a/tools/aif2pcm/main.c b/tools/aif2pcm/main.c index cd5ac4a50..3dad6fcf8 100644 --- a/tools/aif2pcm/main.c +++ b/tools/aif2pcm/main.c @@ -351,6 +351,12 @@ const int gDeltaEncodingTable[] = { -64, -49, -36, -25, -16, -9, -4, -1, }; +#define POSITIVE_DELTAS_START 0 +#define POSITIVE_DELTAS_END 8 + +#define NEGATIVE_DELTAS_START 8 +#define NEGATIVE_DELTAS_END 16 + struct Bytes *delta_decompress(struct Bytes *delta, unsigned int expected_length) { struct Bytes *pcm = malloc(sizeof(struct Bytes)); @@ -418,15 +424,32 @@ struct Bytes *delta_decompress(struct Bytes *delta, unsigned int expected_length return pcm; } +#define U8_TO_S8(value) ((value) < 128 ? (value) : (value) - 256) +#define ABS(value) ((value) >= 0 ? (value) : -(value)) + int get_delta_index(uint8_t sample, uint8_t prev_sample) { int best_error = INT_MAX; int best_index = -1; + int delta_table_start_index; + int delta_table_end_index; + int sample_signed = U8_TO_S8(sample); + int prev_sample_signed = U8_TO_S8(prev_sample); + + // if we're going up (or equal), only choose positive deltas + if (prev_sample_signed <= sample_signed) { + delta_table_start_index = POSITIVE_DELTAS_START; + delta_table_end_index = POSITIVE_DELTAS_END; + } else { + delta_table_start_index = NEGATIVE_DELTAS_START; + delta_table_end_index = NEGATIVE_DELTAS_END; + } - for (int i = 0; i < 16; i++) + for (int i = delta_table_start_index; i < delta_table_end_index; i++) { uint8_t new_sample = prev_sample + gDeltaEncodingTable[i]; - int error = sample > new_sample ? sample - new_sample : new_sample - sample; + int new_sample_signed = U8_TO_S8(new_sample); + int error = ABS(new_sample_signed - sample_signed); if (error < best_error) { |