/*
* Create the compression buffer, and fill it with the CTF and string
* table data. We flush the compression state between the two so the
* dictionary used for the string tables won't be polluted with values
* that made sense for the CTF data.
*/
static caddr_t
write_compressed_buffer(ctf_header_t *h, ctf_buf_t *buf, size_t *resszp)
{
resbuf_t resbuf;
resbuf.rb_size = RES_BUF_CHUNK_SIZE;
resbuf.rb_base = xmalloc(resbuf.rb_size);
bcopy(h, resbuf.rb_base, sizeof (ctf_header_t));
resbuf.rb_ptr = resbuf.rb_base + sizeof (ctf_header_t);
compress_start(&resbuf);
(void) compress_buffer(buf->ctb_base, buf->ctb_ptr - buf->ctb_base,
&resbuf);
compress_flush(&resbuf, Z_FULL_FLUSH);
(void) strtab_write(&buf->ctb_strtab, compress_buffer, &resbuf);
compress_end(&resbuf);
*resszp = (resbuf.rb_ptr - resbuf.rb_base);
return (resbuf.rb_base);
}
int AudioALSAPlaybackHandlerOffload::process_write()
{
while(1)
{
int32_t consumed;
if(mDecBsbufRemain < mDecHandler->BsbufferSize() && mDecPcmbufRemain < mWritebytes)
return OFFLOAD_WRITE_EMPTY;
if(mDecPcmbufRemain >= mWritebytes)
{
memcpy(offload_stream.tmpBuffer, mDecPcmbuf, mWritebytes);
mDecPcmbufRemain -= mWritebytes;
memmove(mDecPcmbuf, mDecPcmbuf+mWritebytes, mDecPcmbufRemain);
// stereo to mono for speaker
if (mStreamAttributeSource->audio_format == AUDIO_FORMAT_PCM_16_BIT) // AudioMixer will perform stereo to mono when 32-bit
{
doStereoToMonoConversionIfNeed(offload_stream.tmpBuffer, mWritebytes);
}
// post processing (can handle both Q1P16 and Q1P31 by audio_format_t)
void *pBufferAfterPostProcessing = NULL;
uint32_t bytesAfterPostProcessing = 0;
doPostProcessing(offload_stream.tmpBuffer, mWritebytes, &pBufferAfterPostProcessing, &bytesAfterPostProcessing);
// SRC
void *pBufferAfterBliSrc = NULL;
uint32_t bytesAfterBliSrc = 0;
doBliSrc(pBufferAfterPostProcessing, bytesAfterPostProcessing, &pBufferAfterBliSrc, &bytesAfterBliSrc);
// bit conversion
void *pBufferAfterBitConvertion = NULL;
uint32_t bytesAfterBitConvertion = 0;
doBitConversion(pBufferAfterBliSrc, bytesAfterBliSrc, &pBufferAfterBitConvertion, &bytesAfterBitConvertion);
int *ptr32;
int ptr32_temp, ptr32_cnt;
ptr32 = (int*)pBufferAfterBitConvertion;
#if 0
for(ptr32_cnt = 0; ptr32_cnt<(bytesAfterBitConvertion>>2); ptr32_cnt++)
{
ptr32_temp = *ptr32;
*ptr32 = ptr32_temp<<8;
*ptr32++;
}
#endif
// data pending
void *pBufferAfterPending = NULL;
uint32_t bytesAfterpending = 0;
dodataPending(pBufferAfterBitConvertion, bytesAfterBitConvertion, &pBufferAfterPending, &bytesAfterpending);
// pcm dump
WritePcmDumpData(pBufferAfterPending, bytesAfterpending);
//int retval = compress_write(mComprStream, offload_stream.tmpBuffer, mWritebytes);
int retval = compress_write(mComprStream, pBufferAfterPending, bytesAfterpending);
if (retval < 0)
{
ALOGE("%s(), compress_write() error, retval = %d, %s", __FUNCTION__, retval, compress_get_error(mComprStream));
}
else
{
if(!mReady)
{
mReady = true;
if( offload_stream.offload_state == OFFLOAD_STATE_IDLE)
offload_stream.offload_state = OFFLOAD_STATE_PLAYING;
compress_nonblock(mComprStream, 1);
compress_start(mComprStream);
}
}
#if 0
if( compress_blockwrite(mComprStream) != 0)
ALOGE("%s(), compress_blockwrite() error= %s", __FUNCTION__, compress_get_error(mComprStream));
#endif
return OFFLOAD_WRITE_REMAIN;
}
ALOGV("%s(),Decode+ %x, %x ", __FUNCTION__, mDecBsbufRemain, mDecPcmbufRemain);
if(mDecBsbufRemain >= mDecHandler->BsbufferSize())
consumed = mDecHandler->DecodeAudio( mDecBsbuf, mDecPcmbuf+mDecPcmbufRemain, mDecBsbufRemain);
if(consumed < 0)
{
ALOGD("%s(), Decoder return error:%x", __FUNCTION__, consumed);
}
else
{
mDecBsbufRemain -= consumed;
memmove(mDecBsbuf, mDecBsbuf + consumed, mDecBsbufRemain);
mDecPcmbufRemain += mDecHandler->PcmbufferSize();
}
ALOGD("%s(),Decode- %x, %x", __FUNCTION__, mDecBsbufRemain, mDecPcmbufRemain);
}