// ------------------------------------------------------
// Convert a selection into a whole sample
int Sample_Crop(int32 range_start, int32 range_end)
{
int32 i;
short *NewBuffer[2];
char nc;
long p_s;
long cropsize = (range_end - range_start);
if(cropsize)
{
Stop_Current_Instrument();
AUDIO_Stop();
nc = Sample_Channels[Current_Instrument][Current_Instrument_Split];
NewBuffer[0] = (short *) malloc(cropsize * 2 + 8);
if(!NewBuffer[0]) return 0;
memset(NewBuffer[0], 0, cropsize * 2 + 8);
if(nc == 2)
{
NewBuffer[1] = (short *) malloc(cropsize * 2 + 8);
if(!NewBuffer[1])
{
free(NewBuffer[0]);
return 0;
}
memset(NewBuffer[1], 0, cropsize * 2 + 8);
}
p_s = 0;
// Copy the selection
for(i = range_start; i < range_end; i++)
{
*(NewBuffer[0] + p_s) = *(RawSamples[Current_Instrument][0][Current_Instrument_Split] + i);
if(nc == 2) *(NewBuffer[1] + p_s) = *(RawSamples[Current_Instrument][1][Current_Instrument_Split] + i);
p_s++;
}
// Set the new buffer as current sample
if(RawSamples[Current_Instrument][0][Current_Instrument_Split]) free(RawSamples[Current_Instrument][0][Current_Instrument_Split]);
RawSamples[Current_Instrument][0][Current_Instrument_Split] = NewBuffer[0];
Player_WL[Current_Instrument][Current_Instrument_Split] = NewBuffer[0];
if(nc == 2)
{
if(RawSamples[Current_Instrument][1][Current_Instrument_Split]) free(RawSamples[Current_Instrument][1][Current_Instrument_Split]);
RawSamples[Current_Instrument][1][Current_Instrument_Split] = NewBuffer[1];
Player_WR[Current_Instrument][Current_Instrument_Split] = NewBuffer[1];
}
Sample_Length[Current_Instrument][Current_Instrument_Split] = cropsize;
Status_Box("Crop done.");
AUDIO_Play();
return 1;
}
return 0;
}
/**
* @brief Changes the selection mode.
* @param select_mode: Selection mode
* @retval None
*/
static void AUDIO_ChangeSelectMode(AUDIO_DEMO_SelectMode select_mode)
{
if(select_mode == AUDIO_SELECT_MENU)
{
AUDIO_SelectItem(AUDIO_main_menu, 0x00);
LCD_LOG_UpdateDisplay();
AudioDemo.state = AUDIO_DEMO_IDLE;
AUDIO_Stop();
}
else if(select_mode == AUDIO_PLAYBACK_CONTROL)
{
LCD_ClearTextZone();
AUDIO_SelectItem(AUDIO_main_menu, 0xFF);
}
AudioSeletMode = select_mode;
AudioDemo.select = 0;
}
/**
* @brief EXTI line detection callbacks.
* @param GPIO_Pin: Specifies the pins connected EXTI line
* @retval None
*/
void HAL_GPIO_EXTI_Callback(uint16_t GPIO_Pin)
{
static JOYState_TypeDef JoyState = JOY_NONE;
static uint32_t debounce_time = 0;
if(GPIO_Pin == GPIO_PIN_2)
{
/* Get the Joystick State */
JoyState = BSP_JOY_GetState();
/* Clear joystick interrupt pending bits */
BSP_IO_ITClear(JOY_ALL_PINS);
if(mtp_select_mode == MTP_SELECT_MENU)
{
MTP_MenuProbeKey(JoyState);
switch(JoyState)
{
case JOY_LEFT:
LCD_LOG_ScrollBack();
break;
case JOY_RIGHT:
LCD_LOG_ScrollForward();
break;
default:
break;
}
}
else if(mtp_select_mode == MTP_PLAYBACK_CONTROL)
{
AUDIO_PlaybackProbeKey(JoyState);
}
}
if(mtp_demo.state == MTP_DEMO_PLAYBACK)
{
if(GPIO_Pin == KEY_BUTTON_PIN)
{
/* Prevent debounce effect for user key */
if((HAL_GetTick() - debounce_time) > 50)
{
debounce_time = HAL_GetTick();
}
else
{
return;
}
/* Change the selection type */
if(mtp_select_mode == MTP_SELECT_MENU)
{
MTP_ChangeSelectMode(MTP_PLAYBACK_CONTROL);
}
else if(mtp_select_mode == MTP_PLAYBACK_CONTROL)
{
AUDIO_Stop();
}
}
}
}
// ------------------------------------------------------
// Insert zeroes into a sample the length of the selection buffer
int Sample_InsertZero(int32 range_start, int32 range_end)
{
int32 i;
short *NewBuffer[2];
char nc;
long p_s;
long cutsize = range_end - range_start;
long newsize = Sample_Length[Current_Instrument][Current_Instrument_Split] + cutsize;
if(cutsize)
{
Stop_Current_Instrument();
AUDIO_Stop();
nc = Sample_Channels[Current_Instrument][Current_Instrument_Split];
// Allocate the destination buffer(s)
// (We need to clear the second one as the back buffer may not be stereo).
NewBuffer[0] = (short *) malloc(newsize * 2 + 8);
if(!NewBuffer[0]) return 0;
memset(NewBuffer[0], 0, newsize * 2 + 8);
if(nc == 2)
{
NewBuffer[1] = (short *) malloc(newsize * 2 + 8);
if(!NewBuffer[1])
{
free(NewBuffer[0]);
return 0;
}
memset(NewBuffer[1], 0, newsize * 2 + 8);
}
p_s = 0;
if(range_start > 0)
{
// Copy the original data into the new buffer
for(i = 0; i < range_start; i++)
{
*(NewBuffer[0] + p_s) = *(RawSamples[Current_Instrument][0][Current_Instrument_Split] + i);
if(nc == 2) *(NewBuffer[1] + p_s) = *(RawSamples[Current_Instrument][1][Current_Instrument_Split] + i);
p_s++;
}
}
// Skip a buffer of the selection's size
p_s += cutsize;
if((Sample_Length[Current_Instrument][Current_Instrument_Split] - range_start) > 0)
{
// Add the rest of the original data
for(i = range_start; i < (int32) Sample_Length[Current_Instrument][Current_Instrument_Split]; i++)
{
*(NewBuffer[0] + p_s) = *(RawSamples[Current_Instrument][0][Current_Instrument_Split] + i);
if(nc == 2) *(NewBuffer[1] + p_s) = *(RawSamples[Current_Instrument][1][Current_Instrument_Split] + i);
p_s++;
}
}
// Set the new buffer as current sample
if(RawSamples[Current_Instrument][0][Current_Instrument_Split]) free(RawSamples[Current_Instrument][0][Current_Instrument_Split]);
RawSamples[Current_Instrument][0][Current_Instrument_Split] = NewBuffer[0];
Player_WL[Current_Instrument][Current_Instrument_Split] = NewBuffer[0];
if(nc == 2)
{
if(RawSamples[Current_Instrument][1][Current_Instrument_Split]) free(RawSamples[Current_Instrument][1][Current_Instrument_Split]);
RawSamples[Current_Instrument][1][Current_Instrument_Split] = NewBuffer[1];
Player_WR[Current_Instrument][Current_Instrument_Split] = NewBuffer[1];
}
Sample_Length[Current_Instrument][Current_Instrument_Split] = newsize;
Status_Box("Duplicate done.");
AUDIO_Play();
return 1;
}
return 0;
}
// ------------------------------------------------------
// Cut part of a sample
int Sample_Cut(int32 range_start, int32 range_end, int do_copy)
{
int32 i;
short *NewBuffer[2];
char nc;
long p_s;
long cutsize = (range_end - range_start);
long newsize = Sample_Length[Current_Instrument][Current_Instrument_Split] - cutsize;
if(newsize)
{
Stop_Current_Instrument();
AUDIO_Stop();
nc = Sample_Channels[Current_Instrument][Current_Instrument_Split];
// Allocate the wav with the minus the block to cut
NewBuffer[0] = (short *) malloc(newsize * 2 + 8);
if(!NewBuffer[0]) return 0;
memset(NewBuffer[0], 0, newsize * 2 + 8);
if(nc == 2)
{
NewBuffer[1] = (short *) malloc(newsize * 2 + 8);
if(!NewBuffer[1])
{
free(NewBuffer[0]);
return 0;
}
memset(NewBuffer[1], 0, newsize * 2 + 8);
}
if(do_copy)
{
if(!Sample_Copy(range_start, range_end))
{
free(NewBuffer[1]);
free(NewBuffer[0]);
return 0;
}
}
p_s = 0;
if(range_start > 0)
{
// Copy the data located before the range start
for(i = 0; i < range_start; i++)
{
*(NewBuffer[0] + p_s) = *(RawSamples[Current_Instrument][0][Current_Instrument_Split] + i);
if(nc == 2) *(NewBuffer[1] + p_s) = *(RawSamples[Current_Instrument][1][Current_Instrument_Split] + i);
p_s++;
}
}
if((Sample_Length[Current_Instrument][Current_Instrument_Split] - range_end) > 0)
{
// Add the data located after the range end
for(i = range_end; i < (int32) Sample_Length[Current_Instrument][Current_Instrument_Split]; i++)
{
*(NewBuffer[0] + p_s) = *(RawSamples[Current_Instrument][0][Current_Instrument_Split] + i);
if(nc == 2) *(NewBuffer[1] + p_s) = *(RawSamples[Current_Instrument][1][Current_Instrument_Split] + i);
p_s++;
}
}
// Set the new buffer as current sample
if(RawSamples[Current_Instrument][0][Current_Instrument_Split]) free(RawSamples[Current_Instrument][0][Current_Instrument_Split]);
RawSamples[Current_Instrument][0][Current_Instrument_Split] = NewBuffer[0];
Player_WL[Current_Instrument][Current_Instrument_Split] = NewBuffer[0];
if(nc == 2)
{
if(RawSamples[Current_Instrument][1][Current_Instrument_Split]) free(RawSamples[Current_Instrument][1][Current_Instrument_Split]);
RawSamples[Current_Instrument][1][Current_Instrument_Split] = NewBuffer[1];
Player_WR[Current_Instrument][Current_Instrument_Split] = NewBuffer[1];
}
Sample_Length[Current_Instrument][Current_Instrument_Split] = newsize;
Status_Box("Cut done.");
AUDIO_Play();
return 1;
}
else
{
if(do_copy)
{
Status_Box("You cannot cut entire sample, use 'delete' on instrument instead.");
}
else
{
Status_Box("You cannot zap entire sample, use 'delete' on instrument instead.");
}
return 0;
}
}