/*
* rtp_check_payload - this is called after receiving packets, but before a
* m_rtp_byte_stream is selected.
*/
void CPlayerMedia::rtp_check_payload (void)
{
// note wmay - 3/16/2005 - need to push in text here.
// we'll only every allow 1 type to be read, so we'll be able to
// set up the interface directly.
bool try_bytestream_buffering = false;
if (get_sync_type() == TIMED_TEXT_SYNC) {
determine_payload_type_from_rtp();
// set the buffer time to 0, so we can pass buffering immediately
m_rtp_byte_stream->set_rtp_buffer_time(0);
try_bytestream_buffering = true;
} else {
if (m_head != NULL) {
/*
* Make sure that the payload type is the same
*/
if (m_head->rtp_pak_pt == m_tail->rtp_pak_pt) {
// we either want only 1 possible protocol, or at least
// 10 packets of the same consecutively. 10 is arbitrary.
if (m_media_info->fmt_list->next == NULL ||
m_rtp_queue_len > 10) {
if (determine_payload_type_from_rtp() == FALSE) {
clear_rtp_packets();
} else {
// call this function again so we begin the buffering check
// right away - better than a go-to.
try_bytestream_buffering = true;
}
}
} else {
clear_rtp_packets();
}
}
}
// if we've set the rtp bytestream, immediately try and see if they are done
// buffering; if so, start the decode task moving.
if (try_bytestream_buffering) {
if (m_rtp_byte_stream->check_buffering() != 0) {
m_rtp_buffering = 1;
start_decoding();
}
}
}
/*
* Main decode thread.
*/
int CPlayerMedia::decode_thread (void)
{
// uint32_t msec_per_frame = 0;
int ret = 0;
int thread_stop = 0, decoding = 0;
uint32_t decode_skipped_frames = 0;
frame_timestamp_t ourtime, lasttime;
// Tell bytestream we're starting the next frame - they'll give us
// the time.
uint8_t *frame_buffer;
uint32_t frame_len;
void *ud = NULL;
uint32_t frames_decoded;
uint64_t start_decode_time = 0;
uint64_t last_decode_time = 0;
bool have_start_time = false;
bool have_frame_ts = false;
bool found_out_of_range_ts = false;
uint64_t bytes_decoded;
lasttime.msec_timestamp = 0;
frames_decoded = 0;
bytes_decoded = 0;
while (thread_stop == 0) {
// waiting here for decoding or thread stop
ret = SDL_SemWait(m_decode_thread_sem);
#ifdef DEBUG_DECODE
media_message(LOG_DEBUG, "%s Decode thread awake",
get_name());
#endif
parse_decode_message(thread_stop, decoding);
if (decoding == 1) {
// We've been told to start decoding - if we don't have a codec,
// create one
m_sync->set_wait_sem(m_decode_thread_sem);
if (m_plugin == NULL) {
switch (m_sync_type) {
case VIDEO_SYNC:
create_video_plugin(NULL,
STREAM_TYPE_RTP,
NULL,
-1,
-1,
m_media_fmt,
NULL,
m_user_data,
m_user_data_size);
break;
case AUDIO_SYNC:
create_audio_plugin(NULL,
STREAM_TYPE_RTP,
NULL,
-1,
-1,
m_media_fmt,
NULL,
m_user_data,
m_user_data_size);
break;
case TIMED_TEXT_SYNC:
create_text_plugin(NULL,
STREAM_TYPE_RTP,
NULL,
m_media_fmt,
m_user_data,
m_user_data_size);
break;
}
if (m_plugin_data == NULL) {
m_plugin = NULL;
} else {
media_message(LOG_DEBUG, "Starting %s codec from decode thread",
m_plugin->c_name);
}
}
if (m_plugin != NULL) {
m_plugin->c_do_pause(m_plugin_data);
} else {
while (thread_stop == 0 && decoding) {
SDL_Delay(100);
if (m_rtp_byte_stream) {
m_rtp_byte_stream->flush_rtp_packets();
}
parse_decode_message(thread_stop, decoding);
}
}
}
/*
* this is our main decode loop
*/
#ifdef DEBUG_DECODE
media_message(LOG_DEBUG, "%s Into decode loop", get_name());
#endif
while ((thread_stop == 0) && decoding) {
parse_decode_message(thread_stop, decoding);
if (thread_stop != 0)
continue;
if (decoding == 0) {
m_plugin->c_do_pause(m_plugin_data);
have_frame_ts = false;
continue;
}
if (m_byte_stream->eof()) {
media_message(LOG_INFO, "%s hit eof", get_name());
if (m_sync) m_sync->set_eof();
decoding = 0;
continue;
}
if (m_byte_stream->have_frame() == false) {
// Indicate that we're waiting, and wait for a message from RTP
// task.
wait_on_bytestream();
continue;
}
frame_buffer = NULL;
bool have_frame;
memset(&ourtime, 0, sizeof(ourtime));
have_frame = m_byte_stream->start_next_frame(&frame_buffer,
&frame_len,
&ourtime,
&ud);
if (have_frame == false) continue;
/*
* If we're decoding video, see if we're playing - if so, check
* if we've fallen significantly behind the audio
*/
if (get_sync_type() == VIDEO_SYNC &&
(m_parent->get_session_state() == SESSION_PLAYING) &&
have_frame_ts) {
int64_t ts_diff = ourtime.msec_timestamp - lasttime.msec_timestamp;
if (ts_diff > TO_D64(1000) ||
ts_diff < TO_D64(-1000)) {
// out of range timestamp - we'll want to not skip here
found_out_of_range_ts = true;
media_message(LOG_INFO, "found out of range ts "U64" last "U64" "D64,
ourtime.msec_timestamp,
lasttime.msec_timestamp,
ts_diff);
} else {
uint64_t current_time = m_parent->get_playing_time();
if (found_out_of_range_ts) {
ts_diff = current_time - ourtime.msec_timestamp;
if (ts_diff > TO_D64(0) && ts_diff < TO_D64(5000)) {
found_out_of_range_ts = false;
media_message(LOG_INFO,
"ts back in playing range "U64" "D64,
ourtime.msec_timestamp, ts_diff);
}
} else {
// regular time
if (current_time >= ourtime.msec_timestamp) {
media_message(LOG_INFO,
"Candidate for skip decode "U64" our "U64,
current_time, ourtime.msec_timestamp);
// If the bytestream can skip ahead, let's do so
if (m_byte_stream->can_skip_frame() != 0) {
int ret;
int hassync;
int count;
current_time += 200;
count = 0;
// Skip up to the current time + 200 msec
ud = NULL;
do {
if (ud != NULL) free(ud);
frame_buffer = NULL;
ret = m_byte_stream->skip_next_frame(&ourtime,
&hassync,
&frame_buffer,
&frame_len,
&ud);
decode_skipped_frames++;
} while (ret != 0 &&
!m_byte_stream->eof() &&
current_time > ourtime.msec_timestamp);
if (m_byte_stream->eof() || ret == 0) continue;
media_message(LOG_INFO, "Skipped ahead "U64 " to "U64,
current_time - 200, ourtime.msec_timestamp);
/*
* Ooh - fun - try to match to the next sync value - if not,
* 15 frames
*/
do {
if (ud != NULL) free(ud);
ret = m_byte_stream->skip_next_frame(&ourtime,
&hassync,
&frame_buffer,
&frame_len,
&ud);
if (hassync < 0) {
uint64_t diff = ourtime.msec_timestamp - current_time;
if (diff > TO_U64(200)) {
hassync = 1;
}
}
decode_skipped_frames++;
count++;
} while (ret != 0 &&
hassync <= 0 &&
count < 30 &&
!m_byte_stream->eof());
if (m_byte_stream->eof() || ret == 0) continue;
#ifdef DEBUG_DECODE
media_message(LOG_INFO,
"Matched ahead - count %d, sync %d time "U64,
count, hassync, ourtime.msec_timestamp);
#endif
}
}
} // end regular time
}
}
lasttime = ourtime;
have_frame_ts = true;
#ifdef DEBUG_DECODE
media_message(LOG_DEBUG, "Decoding %s frame " U64, get_name(),
ourtime.msec_timestamp);
#endif
if (frame_buffer != NULL && frame_len != 0) {
int sync_frame;
ret = m_plugin->c_decode_frame(m_plugin_data,
&ourtime,
m_streaming,
&sync_frame,
frame_buffer,
frame_len,
ud);
#ifdef DEBUG_DECODE
media_message(LOG_DEBUG, "Decoding %s frame return %d",
get_name(), ret);
#endif
if (ret > 0) {
frames_decoded++;
if (have_start_time == false) {
have_start_time = true;
start_decode_time = ourtime.msec_timestamp;
}
last_decode_time = ourtime.msec_timestamp;
m_byte_stream->used_bytes_for_frame(ret);
bytes_decoded += ret;
} else {
m_byte_stream->used_bytes_for_frame(frame_len);
}
}
}
// calculate frame rate for session
}
if (is_audio() == false)
media_message(LOG_NOTICE, "Video decoder skipped %u frames",
decode_skipped_frames);
if (last_decode_time > start_decode_time) {
double fps, bps;
double secs;
uint64_t total_time = last_decode_time - start_decode_time;
secs = UINT64_TO_DOUBLE(total_time);
secs /= 1000.0;
#if 0
media_message(LOG_DEBUG, "last time "U64" first "U64,
last_decode_time, start_decode_time);
#endif
fps = frames_decoded;
fps /= secs;
bps = UINT64_TO_DOUBLE(bytes_decoded);
bps *= 8.0 / secs;
media_message(LOG_NOTICE, "%s - bytes "U64", seconds %g, fps %g bps %g",
get_name(),
bytes_decoded, secs,
fps, bps);
}
if (m_plugin) {
m_plugin->c_close(m_plugin_data);
m_plugin_data = NULL;
}
return (0);
}
