DSP_DecodeG711

Syntax


void DSP_DecodeG711(void *dst, const void *src, u32 len, DSPAudioCodecMode mode);

dst	Buffer that stores converted 16-bit PCM data. The specified buffer has the same restrictions as a 16-bit DMA transfer. See Note below for more details.
src	Buffer that holds 8-bit A-law or 8-bit µ-law source data to convert. The specified buffer has the same restrictions as a 16-bit DMA transfer. See Note below for more details.
len	Number of samples to convert.
mode	Encoding to be converted. Select either `DSP_AUDIO_CODEC_MODE_G711_ALAW` or `DSP_AUDIO_CODEC_MODE_G711_ULAW`.

None.

Decodes G.711-encoded PCM samples. You can use either the DSP_WaitForG711 or DSP_TryWaitForG711 function to confirm that processing is complete.

You must use the DSP_LoadG711 function to load the G.711 component before using this function.
The buffers specified for the transfer source and destination must all satisfy the same conditions as 16-bit DMA transfers.
- Addresses must be 16-bit aligned.
- Buffers holding the pre-conversion source data to be processed by the DSP must be cached in advance.
- Before the post-conversion buffer obtained from the DSP is accessed, the cache must be invalidated.

2008/02/21 Initial version.

CONFIDENTIAL