void ReplayAudioBufferPlayout::fill_packet(
IOAudioPacket *apkt,
Rational speed
) {
/*
* synthesize enough data for each channel to fill apkt
* note that we don't do any synthesis on channels that do not exist
* in the apkt.
*/
for (channel_data &ch : channel_map) {
while (ch.fifo->fill_samples( ) < apkt->size_samples( )) {
if (ch.channel_no < apkt->channels( )) {
synthesize_samples(ch);
}
ch.pos_offset += speed;
}
if (ch.channel_no < apkt->channels( )) {
ch.fifo->fill_channel(apkt, ch.channel_no);
}
}
}
static OMX_ERRORTYPE
decode_buffer (const void * ap_obj)
{
mp3d_prc_t * p_obj = (mp3d_prc_t *) ap_obj;
unsigned char * p_guardzone = NULL;
int status = 0;
assert (p_obj->p_outhdr_);
/* Check if there is any remaining PCM data from a previous run of the
* decoding loop that needs to be synthesised */
if ((0 != p_obj->next_synth_sample_
&& p_obj->next_synth_sample_ < p_obj->synth_.pcm.length)
&& (p_obj->p_outhdr_->nFilledLen < p_obj->p_outhdr_->nAllocLen))
{
p_obj->next_synth_sample_
= synthesize_samples (p_obj, p_obj->next_synth_sample_);
}
while (p_obj->p_outhdr_)
{
/* The input bucket must be filled if it becomes empty or if
* it's the first execution of the loop.
*/
if ((NULL == p_obj->stream_.buffer
|| MAD_ERROR_BUFLEN == p_obj->stream_.error)
&& p_obj->p_inhdr_ != NULL)
{
size_t read_size = 0;
unsigned char * p_read_start = NULL;
p_obj->remaining_ = 0;
if (p_obj->stream_.next_frame != NULL)
{
p_obj->remaining_
= p_obj->stream_.bufend - p_obj->stream_.next_frame;
memmove (p_obj->in_buff_, p_obj->stream_.next_frame,
p_obj->remaining_);
p_read_start = p_obj->in_buff_ + p_obj->remaining_;
read_size = INPUT_BUFFER_SIZE - p_obj->remaining_;
}
else
{
read_size = INPUT_BUFFER_SIZE;
p_read_start = p_obj->in_buff_;
p_obj->remaining_ = 0;
}
/* Fill-in the buffer. If an error occurs print a message
* and leave the decoding loop. If the end of stream is
* reached we also leave the loop but the return status is
* left untouched.
*/
read_size = read_from_omx_buffer (p_obj, p_read_start, read_size,
p_obj->p_inhdr_);
if (read_size == 0)
{
if ((p_obj->p_inhdr_->nFlags & OMX_BUFFERFLAG_EOS) != 0)
{
TIZ_TRACE (handleOf (p_obj), "end of input stream");
status = 2;
}
else
{
TIZ_TRACE (handleOf (p_obj), "read_size <= 0");
status = 1;
}
break;
}
/* TODO */
/* if(BstdFileEofP (BstdFile)) */
/* { */
/* p_guardzone = p_read_start + read_size; */
/* memset (p_guardzone, 0, MAD_BUFFER_GUARD); */
/* read_size += MAD_BUFFER_GUARD; */
/* } */
/* Pipe the new buffer content to libmad's stream decoder
* facility.
*/
mad_stream_buffer (&p_obj->stream_, p_obj->in_buff_,
read_size + p_obj->remaining_);
p_obj->stream_.error = 0;
}
if (mad_frame_decode (&p_obj->frame_, &p_obj->stream_) == -1)
{
if (MAD_RECOVERABLE (p_obj->stream_.error))
{
if (p_obj->stream_.error != MAD_ERROR_LOSTSYNC
|| p_obj->stream_.this_frame != p_guardzone)
{
TIZ_TRACE (handleOf (p_obj),
"recoverable frame level error (%s)",
mad_stream_errorstr (&p_obj->stream_));
}
continue;
}
else
{
if (p_obj->stream_.error == MAD_ERROR_BUFLEN)
{
if (!p_obj->p_inhdr_)
{
TIZ_TRACE (handleOf (p_obj),
"p_obj->stream_.error==MAD_ERROR_BUFLEN "
"p_obj->p_inhdr_=[NULL]");
break;
}
else
{
TIZ_TRACE (handleOf (p_obj),
"p_obj->stream_.error==MAD_ERROR_BUFLEN "
"p_obj->p_inhdr_=[%p] nFilledLen [%d]",
p_obj->p_inhdr_, p_obj->p_inhdr_->nFilledLen);
continue;
}
}
else
{
TIZ_TRACE (handleOf (p_obj),
"unrecoverable frame level error (%s).",
mad_stream_errorstr (&p_obj->stream_));
status = 2;
break;
}
}
}
/* The characteristics of the stream's first frame is printed The first
* frame is representative of the entire stream.
*/
if (0 == p_obj->frame_count_)
{
store_stream_metadata (p_obj, &(p_obj->frame_.header));
}
p_obj->frame_count_++;
mad_timer_add (&p_obj->timer_, p_obj->frame_.header.duration);
/* Once decoded the frame is synthesized to PCM samples. No errors
* are reported by mad_synth_frame();
*/
mad_synth_frame (&p_obj->synth_, &p_obj->frame_);
p_obj->next_synth_sample_
= synthesize_samples (p_obj, p_obj->next_synth_sample_);
}
(void) status;
/* TODO */
/* if (p_obj->p_outhdr_ != NULL */
/* && p_obj->p_outhdr_->nFilledLen != 0 */
/* && status == 2) */
/* { */
/* const tiz_srv_t *p_parent = ap_obj; */
/* void *p_krn = tiz_get_krn (p_parent->p_hdl_); */
/* p_obj->eos_ = true; */
/* p_obj->p_outhdr_->nFlags |= OMX_BUFFERFLAG_EOS; */
/* TIZ_LOG (TIZ_PRIORITY_TRACE, handleOf (p_obj), */
/* "Releasing output buffer [%p] ..." */
/* "nFilledLen = [%d] OMX_BUFFERFLAG_EOS", */
/* p_obj->p_outhdr_, p_obj->p_outhdr_->nFilledLen); */
/* tiz_krn_release_buffer (tiz_get_krn (handleOf (ap_obj)), 1,
* p_obj->p_outhdr_); */
/* /\* p_obj->p_outhdr_ = NULL; *\/ */
/* } */
return OMX_ErrorNone;
}
