/**
* @brief Starts Audio streaming.
* @param idx: File index
* @retval Audio error
*/
AUDIO_ErrorTypeDef AUDIO_Start(uint8_t idx)
{
uint32_t bytesread;
if(MTP_GetWavObjectNumber() > idx)
{
AUDIO_GetFileInfo(idx, &wav_info);
BSP_AUDIO_OUT_SetFrequency(wav_info.SampleRate);
buffer_ctl.offset = BUFFER_OFFSET_NONE;
if(MTP_GetData(idx,
44,
AUDIO_BUFFER_SIZE,
&buffer_ctl.buff[0],
&bytesread) == 0)
{
audio_state = AUDIO_STATE_PLAY;
BSP_LCD_DisplayStringAt(250, LINE(14), (uint8_t *)" [PLAY ]", LEFT_MODE);
{
if(bytesread != 0)
{
BSP_AUDIO_OUT_Play((uint16_t*)&buffer_ctl.buff[0], AUDIO_BUFFER_SIZE);
buffer_ctl.fptr = bytesread;
return AUDIO_ERROR_NONE;
}
}
}
}
return AUDIO_ERROR_IO;
}
/**
* @brief Starts Audio streaming.
* @param idx: File index
* @retval Audio error
*/
AUDIO_ErrorTypeDef AUDIO_Start(uint8_t idx)
{
uint32_t bytesread;
if((FileList.ptr > idx) && (BSP_SD_IsDetected()))
{
f_close(&wav_file);
AUDIO_GetFileInfo(idx, &wav_info);
audio_state = AUDIO_STATE_CONFIG;
/* Set Frequency */
USBH_AUDIO_SetFrequency(&hUSBHost,
wav_info.SampleRate,
wav_info.NbrChannels,
wav_info.BitPerSample);
/* Fill whole buffer at first time */
if(f_read(&wav_file,
&buffer_ctl.buff[0],
AUDIO_BLOCK_SIZE * AUDIO_BLOCK_NBR,
(void *)&bytesread) == FR_OK)
{
if(bytesread != 0)
{
return AUDIO_ERROR_NONE;
}
}
buffer_ctl.in_ptr = 0;
}
return AUDIO_ERROR_IO;
}
/**
* @brief Starts Audio streaming.
* @param idx: File index
* @retval Audio error
*/
AUDIO_ErrorTypeDef AUDIO_Start(uint8_t idx)
{
uint32_t bytesread;
f_close(&WavFile);
if(AUDIO_GetWavObjectNumber() > idx)
{
AUDIO_GetFileInfo(idx, &WaveFormat);
/*Adjust the Audio frequency */
AUDIO_WavePlayerInit(WaveFormat.SampleRate);
BufferCtl.offset = BUFFER_OFFSET_NONE;
/* Get Data from USB Flash Disk */
f_lseek(&WavFile, 0);
/* Fill whole buffer at first time */
if(f_read(&WavFile,
&BufferCtl.buff[0],
AUDIO_BUFFER_SIZE,
(void *)&bytesread) == FR_OK)
{
AudioState = AUDIO_STATE_PLAY;
BSP_LCD_DisplayStringAt(250, LINE(14), (uint8_t *)" [PLAY ]", LEFT_MODE);
{
if(bytesread != 0)
{
BSP_AUDIO_OUT_Play((uint16_t*)&BufferCtl.buff[0], AUDIO_BUFFER_SIZE);
BufferCtl.fptr = bytesread;
return AUDIO_ERROR_NONE;
}
}
}
}
return AUDIO_ERROR_IO;
}
