/**
* \brief init feeder
* \param audec pointer to audec
* \return 0 on success otherwise -1 if an error occurred
*/
int feeder_init(aml_audio_dec_t *audec)
{
int ret;
dsp_operations_t *dsp_ops;
dsp_ops = &audec->adsp_ops;
audec->format = get_audio_format();
if (audec->format == ADEC_AUDIO_FORMAT_UNKNOWN) {
adec_print("Unknown audio format!");
return -1;
}
ret = audiodsp_init(dsp_ops);
if (ret) {
adec_print("audio dsp init failed!");
return -1;
}
ret = audiodsp_start(audec);
if (ret == 0) {
dsp_ops->dsp_on = 1;
dsp_ops->dsp_read = audiodsp_stream_read;
dsp_ops->get_cur_pts = audiodsp_get_pts;
dsp_ops->get_cur_pcrscr = audiodsp_get_pcrscr;
dsp_ops->set_cur_apts = audiodsp_set_apts;
} else {
audiodsp_release(dsp_ops);
dsp_ops->dsp_on = 0;
dsp_ops->dsp_read = NULL;
dsp_ops->get_cur_pts = NULL;
dsp_ops->get_cur_pcrscr = NULL;
/* TODO: amport init */
}
return ret;
}
int mgcp_transcoding_setup(struct mgcp_endpoint *endp,
struct mgcp_rtp_end *dst_end,
struct mgcp_rtp_end *src_end)
{
struct mgcp_process_rtp_state *state;
enum audio_format src_fmt, dst_fmt;
const struct mgcp_rtp_codec *src_codec = &src_end->codec;
const struct mgcp_rtp_codec *dst_codec = &dst_end->codec;
/* cleanup first */
if (dst_end->rtp_process_data) {
talloc_free(dst_end->rtp_process_data);
dst_end->rtp_process_data = NULL;
}
if (!src_end)
return 0;
src_fmt = get_audio_format(src_codec);
dst_fmt = get_audio_format(dst_codec);
LOGP(DMGCP, LOGL_ERROR,
"Checking transcoding: %s (%d) -> %s (%d)\n",
src_codec->subtype_name, src_codec->payload_type,
dst_codec->subtype_name, dst_codec->payload_type);
if (src_fmt == AF_INVALID || dst_fmt == AF_INVALID) {
if (!src_codec->subtype_name || !dst_codec->subtype_name)
/* Not enough info, do nothing */
return 0;
if (strcmp(src_codec->subtype_name, dst_codec->subtype_name) == 0)
/* Nothing to do */
return 0;
LOGP(DMGCP, LOGL_ERROR,
"Cannot transcode: %s codec not supported (%s -> %s).\n",
src_fmt != AF_INVALID ? "destination" : "source",
src_codec->audio_name, dst_codec->audio_name);
return -EINVAL;
}
if (src_codec->rate && dst_codec->rate && src_codec->rate != dst_codec->rate) {
LOGP(DMGCP, LOGL_ERROR,
"Cannot transcode: rate conversion (%d -> %d) not supported.\n",
src_codec->rate, dst_codec->rate);
return -EINVAL;
}
state = talloc_zero(endp->tcfg->cfg, struct mgcp_process_rtp_state);
talloc_set_destructor(state, processing_state_destructor);
dst_end->rtp_process_data = state;
state->src_fmt = src_fmt;
switch (state->src_fmt) {
case AF_L16:
case AF_S16:
state->src_frame_size = 80 * sizeof(short);
state->src_samples_per_frame = 80;
break;
case AF_GSM:
state->src_frame_size = sizeof(gsm_frame);
state->src_samples_per_frame = 160;
state->src.gsm_handle = gsm_create();
if (!state->src.gsm_handle) {
LOGP(DMGCP, LOGL_ERROR,
"Failed to initialize GSM decoder.\n");
return -EINVAL;
}
break;
#ifdef HAVE_BCG729
case AF_G729:
state->src_frame_size = 10;
state->src_samples_per_frame = 80;
state->src.g729_dec = initBcg729DecoderChannel();
if (!state->src.g729_dec) {
LOGP(DMGCP, LOGL_ERROR,
"Failed to initialize G.729 decoder.\n");
return -EINVAL;
}
break;
#endif
case AF_PCMA:
state->src_frame_size = 80;
state->src_samples_per_frame = 80;
break;
default:
break;
}
state->dst_fmt = dst_fmt;
switch (state->dst_fmt) {
case AF_L16:
case AF_S16:
state->dst_frame_size = 80*sizeof(short);
state->dst_samples_per_frame = 80;
break;
case AF_GSM:
state->dst_frame_size = sizeof(gsm_frame);
state->dst_samples_per_frame = 160;
state->dst.gsm_handle = gsm_create();
if (!state->dst.gsm_handle) {
LOGP(DMGCP, LOGL_ERROR,
"Failed to initialize GSM encoder.\n");
return -EINVAL;
}
break;
#ifdef HAVE_BCG729
case AF_G729:
state->dst_frame_size = 10;
state->dst_samples_per_frame = 80;
state->dst.g729_enc = initBcg729EncoderChannel();
if (!state->dst.g729_enc) {
LOGP(DMGCP, LOGL_ERROR,
"Failed to initialize G.729 decoder.\n");
return -EINVAL;
}
break;
#endif
case AF_PCMA:
state->dst_frame_size = 80;
state->dst_samples_per_frame = 80;
break;
default:
break;
}
if (dst_end->force_output_ptime)
state->dst_packet_duration = mgcp_rtp_packet_duration(endp, dst_end);
LOGP(DMGCP, LOGL_INFO,
"Initialized RTP processing on: 0x%x "
"conv: %d (%d, %d, %s) -> %d (%d, %d, %s)\n",
ENDPOINT_NUMBER(endp),
src_fmt, src_codec->payload_type, src_codec->rate, src_end->fmtp_extra,
dst_fmt, dst_codec->payload_type, dst_codec->rate, dst_end->fmtp_extra);
return 0;
}
status_t
OggTobiasSeekable::GetStreamInfo(int64 *frameCount, bigtime_t *duration,
media_format *format)
{
TRACE("OggTobiasSeekable::GetStreamInfo\n");
status_t result = B_OK;
ogg_packet packet;
// get header packet
if (GetHeaderPackets().size() < 1) {
result = GetPacket(&packet);
if (result != B_OK) {
return result;
}
SaveHeaderPacket(packet);
}
packet = GetHeaderPackets()[0];
if (!packet.b_o_s) {
return B_ERROR; // first packet was not beginning of stream
}
// parse header packet
if (packet.bytes < 1+(signed)sizeof(tobias_stream_header)) {
return B_ERROR;
}
void * data = &(packet.packet[1]);
tobias_stream_header * header = (tobias_stream_header *)data;
if (strcmp(header->streamtype, "video") == 0) {
result = get_video_format(header, format);
if (result != B_OK) {
return result;
}
} else if (strcmp(header->streamtype, "audio") == 0) {
result = get_audio_format(header, format);
if (result != B_OK) {
return result;
}
} else if (strcmp(header->streamtype, "text") == 0) {
result = get_text_format(header, format);
if (result != B_OK) {
return result;
}
} else {
*frameCount = 0;
// unknown streamtype
return B_BAD_VALUE;
}
// get comment packet
if (GetHeaderPackets().size() < 2) {
result = GetPacket(&packet);
if (result != B_OK) {
return result;
}
SaveHeaderPacket(packet);
}
format->SetMetaData((void*)&GetHeaderPackets(),sizeof(GetHeaderPackets()));
fMediaFormat = *format;
fMicrosecPerFrame = header->time_unit / 10.0;
fFrameRate = header->samples_per_unit * 1000000.0 / fMicrosecPerFrame;
// TODO: count the frames in the first page.. somehow.. :-/
int64 frames = 0;
ogg_page page;
// read the first page
result = ReadPage(&page);
if (result != B_OK) {
return result;
}
int64 fFirstGranulepos = ogg_page_granulepos(&page);
TRACE("OggVorbisSeekable::GetStreamInfo: first granulepos: %lld\n", fFirstGranulepos);
// read our last page
off_t last = inherited::Seek(GetLastPagePosition(), SEEK_SET);
if (last < 0) {
return last;
}
result = ReadPage(&page);
if (result != B_OK) {
return result;
}
int64 last_granulepos = ogg_page_granulepos(&page);
// seek back to the start
int64 frame = 0;
bigtime_t time = 0;
result = Seek(B_MEDIA_SEEK_TO_TIME, &frame, &time);
if (result != B_OK) {
return result;
}
// compute frame count and duration from sample count
frames = last_granulepos - fFirstGranulepos;
*frameCount = frames;
*duration = (long long)((1000000LL * frames) / (double)fFrameRate);
return B_OK;
}
