2002-08-05 00:39:07 +00:00
|
|
|
extern "C" {
|
|
|
|
#include "demux_rtp.h"
|
|
|
|
#include "stheader.h"
|
|
|
|
}
|
|
|
|
|
|
|
|
#include "BasicUsageEnvironment.hh"
|
|
|
|
#include "liveMedia.hh"
|
|
|
|
#include <unistd.h>
|
|
|
|
|
|
|
|
////////// Routines (with C-linkage) that interface between "mplayer"
|
|
|
|
////////// and the "LIVE.COM Streaming Media" libraries:
|
|
|
|
|
|
|
|
extern "C" stream_t* stream_open_sdp(int fd, off_t fileSize,
|
|
|
|
int* file_format) {
|
|
|
|
*file_format = DEMUXER_TYPE_RTP;
|
|
|
|
stream_t* newStream = NULL;
|
|
|
|
do {
|
|
|
|
char* sdpDescription = (char*)malloc(fileSize+1);
|
|
|
|
if (sdpDescription == NULL) break;
|
|
|
|
|
|
|
|
ssize_t numBytesRead = read(fd, sdpDescription, fileSize);
|
|
|
|
if (numBytesRead != fileSize) break;
|
|
|
|
sdpDescription[fileSize] = '\0'; // to be safe
|
|
|
|
|
|
|
|
newStream = (stream_t*)calloc(sizeof (stream_t), 1);
|
|
|
|
if (newStream == NULL) break;
|
|
|
|
|
|
|
|
// Store the SDP description in the 'priv' field, for later use:
|
|
|
|
newStream->priv = sdpDescription;
|
|
|
|
} while (0);
|
|
|
|
return newStream;
|
|
|
|
}
|
|
|
|
|
|
|
|
extern "C" int _rtsp_streaming_seek(int /*fd*/, off_t /*pos*/,
|
|
|
|
streaming_ctrl_t* /*streaming_ctrl*/) {
|
|
|
|
return -1; // For now, we don't handle RTSP stream seeking
|
|
|
|
}
|
|
|
|
|
|
|
|
extern "C" int rtsp_streaming_start(stream_t* stream) {
|
|
|
|
stream->streaming_ctrl->streaming_seek = _rtsp_streaming_seek;
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
// A data structure representing a buffer being read:
|
|
|
|
class ReadBufferQueue; // forward
|
|
|
|
class ReadBuffer {
|
|
|
|
public:
|
|
|
|
ReadBuffer(ReadBufferQueue* ourQueue, demux_packet_t* dp);
|
|
|
|
virtual ~ReadBuffer();
|
|
|
|
Boolean enqueue();
|
|
|
|
|
|
|
|
demux_packet_t* dp() const { return fDP; }
|
|
|
|
ReadBufferQueue* ourQueue() { return fOurQueue; }
|
|
|
|
|
|
|
|
ReadBuffer* next;
|
|
|
|
private:
|
|
|
|
demux_packet_t* fDP;
|
|
|
|
ReadBufferQueue* fOurQueue;
|
|
|
|
};
|
|
|
|
|
|
|
|
class ReadBufferQueue {
|
|
|
|
public:
|
|
|
|
ReadBufferQueue(MediaSubsession* subsession, demuxer_t* demuxer,
|
|
|
|
char const* tag);
|
|
|
|
virtual ~ReadBufferQueue();
|
|
|
|
|
|
|
|
ReadBuffer* dequeue();
|
|
|
|
|
|
|
|
FramedSource* readSource() const { return fReadSource; }
|
|
|
|
demuxer_t* ourDemuxer() const { return fOurDemuxer; }
|
|
|
|
char const* tag() const { return fTag; }
|
|
|
|
|
|
|
|
ReadBuffer* head;
|
|
|
|
ReadBuffer* tail;
|
|
|
|
char blockingFlag; // used to implement synchronous reads
|
|
|
|
unsigned counter; // used for debugging
|
|
|
|
private:
|
|
|
|
FramedSource* fReadSource;
|
|
|
|
demuxer_t* fOurDemuxer;
|
|
|
|
char const* fTag; // used for debugging
|
|
|
|
};
|
|
|
|
|
|
|
|
// A structure of RTP-specific state, kept so that we can cleanly
|
|
|
|
// reclaim it:
|
|
|
|
typedef struct RTPState {
|
|
|
|
char const* sdpDescription;
|
|
|
|
RTSPClient* rtspClient;
|
|
|
|
MediaSession* mediaSession;
|
|
|
|
ReadBufferQueue* audioBufferQueue;
|
|
|
|
ReadBufferQueue* videoBufferQueue;
|
|
|
|
int isMPEG; // TRUE for MPEG audio, video, or transport streams
|
|
|
|
};
|
|
|
|
|
|
|
|
extern "C" void demux_open_rtp(demuxer_t* demuxer) {
|
|
|
|
do {
|
|
|
|
TaskScheduler* scheduler = BasicTaskScheduler::createNew();
|
|
|
|
if (scheduler == NULL) break;
|
|
|
|
UsageEnvironment* env = BasicUsageEnvironment::createNew(*scheduler);
|
|
|
|
if (env == NULL) break;
|
|
|
|
|
|
|
|
RTSPClient* rtspClient = NULL;
|
|
|
|
int isMPEG = 0;
|
|
|
|
|
|
|
|
// Look at the stream's 'priv' field to see if we were initiated
|
|
|
|
// via a SDP description:
|
|
|
|
char* sdpDescription = (char*)(demuxer->stream->priv);
|
|
|
|
if (sdpDescription == NULL) {
|
|
|
|
// We weren't given a SDP description directly, so assume that
|
|
|
|
// we were give a RTSP URL
|
|
|
|
char const* url = demuxer->stream->streaming_ctrl->url->url;
|
|
|
|
|
|
|
|
extern int verbose;
|
|
|
|
rtspClient = RTSPClient::createNew(*env, verbose);
|
|
|
|
if (rtspClient == NULL) {
|
|
|
|
fprintf(stderr, "Failed to create RTSP client: %s\n",
|
|
|
|
env->getResultMsg());
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
sdpDescription = rtspClient->describeURL(url);
|
|
|
|
if (sdpDescription == NULL) {
|
|
|
|
fprintf(stderr, "Failed to get a SDP description from URL \"%s\": %s\n",
|
|
|
|
url, env->getResultMsg());
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
// Now that we have a SDP description, create a MediaSession from it:
|
|
|
|
MediaSession* mediaSession = MediaSession::createNew(*env, sdpDescription);
|
|
|
|
if (mediaSession == NULL) break;
|
|
|
|
|
|
|
|
// Create RTP receivers (sources) for each subsession:
|
|
|
|
MediaSubsessionIterator iter(*mediaSession);
|
|
|
|
MediaSubsession* subsession;
|
|
|
|
MediaSubsession* audioSubsession = NULL;
|
|
|
|
MediaSubsession* videoSubsession = NULL;
|
|
|
|
while ((subsession = iter.next()) != NULL) {
|
|
|
|
// Ignore any subsession that's not audio or video:
|
|
|
|
if (strcmp(subsession->mediumName(), "audio") == 0) {
|
|
|
|
audioSubsession = subsession;
|
|
|
|
} else if (strcmp(subsession->mediumName(), "video") == 0) {
|
|
|
|
videoSubsession = subsession;
|
|
|
|
} else {
|
|
|
|
continue;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (!subsession->initiate()) {
|
|
|
|
fprintf(stderr, "Failed to initiate \"%s/%s\" RTP subsession: %s\n", subsession->mediumName(), subsession->codecName(), env->getResultMsg());
|
|
|
|
} else {
|
|
|
|
fprintf(stderr, "Initiated \"%s/%s\" RTP subsession\n", subsession->mediumName(), subsession->codecName());
|
|
|
|
|
|
|
|
if (rtspClient != NULL) {
|
|
|
|
// Issue RTSP "SETUP" and "PLAY" commands on the chosen subsession:
|
|
|
|
if (!rtspClient->setupMediaSubsession(*subsession)) break;
|
|
|
|
if (!rtspClient->playMediaSubsession(*subsession)) break;
|
|
|
|
}
|
|
|
|
|
|
|
|
// Now that the subsession is ready to be read, do additional
|
|
|
|
// mplayer-specific initialization on it:
|
|
|
|
if (subsession == videoSubsession) {
|
|
|
|
// Create a dummy video stream header
|
|
|
|
// to make the main mplayer code happy:
|
|
|
|
sh_video_t* sh_video = new_sh_video(demuxer,0);
|
2002-08-14 21:56:31 +00:00
|
|
|
BITMAPINFOHEADER* bih
|
|
|
|
= (BITMAPINFOHEADER*)calloc(1,sizeof(BITMAPINFOHEADER));
|
|
|
|
bih->biSize = sizeof(BITMAPINFOHEADER);
|
|
|
|
sh_video->bih = bih;
|
2002-08-05 00:39:07 +00:00
|
|
|
demux_stream_t* d_video = demuxer->video;
|
|
|
|
d_video->sh = sh_video; sh_video->ds = d_video;
|
|
|
|
|
2002-08-14 21:56:31 +00:00
|
|
|
// Map known video MIME types to the BITMAPINFOHEADER parameters
|
|
|
|
// that this program uses. (Note that not all types need all
|
|
|
|
// of the parameters to be set.)
|
2002-08-05 00:39:07 +00:00
|
|
|
if (strcmp(subsession->codecName(), "MPV") == 0 ||
|
|
|
|
strcmp(subsession->codecName(), "MP1S") == 0 ||
|
|
|
|
strcmp(subsession->codecName(), "MP2T") == 0) {
|
|
|
|
isMPEG = 1;
|
|
|
|
} else if (strcmp(subsession->codecName(), "H263") == 0 ||
|
|
|
|
strcmp(subsession->codecName(), "H263-1998") == 0) {
|
2002-08-14 21:56:31 +00:00
|
|
|
bih->biCompression = sh_video->format
|
|
|
|
= mmioFOURCC('H','2','6','3');
|
2002-08-05 00:39:07 +00:00
|
|
|
} else if (strcmp(subsession->codecName(), "H261") == 0) {
|
2002-08-14 21:56:31 +00:00
|
|
|
bih->biCompression = sh_video->format
|
|
|
|
= mmioFOURCC('H','2','6','1');
|
2002-08-05 00:39:07 +00:00
|
|
|
} else {
|
|
|
|
fprintf(stderr,
|
|
|
|
"Unknown mplayer format code for MIME type \"video/%s\"\n",
|
|
|
|
subsession->codecName());
|
|
|
|
}
|
|
|
|
} else if (subsession == audioSubsession) {
|
|
|
|
// Create a dummy audio stream header
|
|
|
|
// to make the main mplayer code happy:
|
|
|
|
sh_audio_t* sh_audio = new_sh_audio(demuxer,0);
|
2002-08-14 21:56:31 +00:00
|
|
|
WAVEFORMATEX* wf = (WAVEFORMATEX*)calloc(1,sizeof(WAVEFORMATEX));
|
|
|
|
sh_audio->wf = wf;
|
2002-08-05 00:39:07 +00:00
|
|
|
demux_stream_t* d_audio = demuxer->audio;
|
|
|
|
d_audio->sh = sh_audio; sh_audio->ds = d_audio;
|
|
|
|
|
2002-08-14 21:56:31 +00:00
|
|
|
// Map known audio MIME types to the WAVEFORMATEX parameters
|
|
|
|
// that this program uses. (Note that not all types need all
|
|
|
|
// of the parameters to be set.)
|
|
|
|
wf->nSamplesPerSec
|
|
|
|
= subsession->rtpSource()->timestampFrequency(); // by default
|
2002-08-05 00:39:07 +00:00
|
|
|
if (strcmp(subsession->codecName(), "MPA") == 0 ||
|
|
|
|
strcmp(subsession->codecName(), "MPA-ROBUST") == 0 ||
|
|
|
|
strcmp(subsession->codecName(), "X-MP3-DRAFT-00") == 0) {
|
2002-08-14 21:56:31 +00:00
|
|
|
wf->wFormatTag = sh_audio->format = 0x55;
|
|
|
|
// Note: 0x55 is for layer III, but should work for I,II also
|
|
|
|
wf->nSamplesPerSec = 0; // sample rate is deduced from the data
|
2002-08-05 00:39:07 +00:00
|
|
|
} else if (strcmp(subsession->codecName(), "AC3") == 0) {
|
2002-08-14 21:56:31 +00:00
|
|
|
wf->wFormatTag = sh_audio->format = 0x2000;
|
|
|
|
wf->nSamplesPerSec = 0; // sample rate is deduced from the data
|
2002-08-05 00:39:07 +00:00
|
|
|
} else if (strcmp(subsession->codecName(), "PCMU") == 0) {
|
2002-08-14 21:56:31 +00:00
|
|
|
wf->wFormatTag = sh_audio->format = 0x7;
|
|
|
|
wf->nChannels = 1;
|
|
|
|
wf->nAvgBytesPerSec = 8000;
|
|
|
|
wf->nBlockAlign = 1;
|
|
|
|
wf->wBitsPerSample = 8;
|
|
|
|
wf->cbSize = 0;
|
2002-08-05 00:39:07 +00:00
|
|
|
} else if (strcmp(subsession->codecName(), "PCMA") == 0) {
|
2002-08-14 21:56:31 +00:00
|
|
|
wf->wFormatTag = sh_audio->format = 0x6;
|
|
|
|
wf->nChannels = 1;
|
|
|
|
wf->nAvgBytesPerSec = 8000;
|
|
|
|
wf->nBlockAlign = 1;
|
|
|
|
wf->wBitsPerSample = 8;
|
|
|
|
wf->cbSize = 0;
|
2002-08-05 00:39:07 +00:00
|
|
|
} else if (strcmp(subsession->codecName(), "GSM") == 0) {
|
2002-08-14 21:56:31 +00:00
|
|
|
wf->wFormatTag = sh_audio->format = 0x31;
|
|
|
|
wf->nChannels = 1;
|
|
|
|
wf->nAvgBytesPerSec = 1650;
|
|
|
|
wf->nBlockAlign = 33;
|
|
|
|
wf->wBitsPerSample = 16;
|
|
|
|
wf->cbSize = 0;
|
2002-08-05 00:39:07 +00:00
|
|
|
} else {
|
|
|
|
fprintf(stderr,
|
|
|
|
"Unknown mplayer format code for MIME type \"audio/%s\"\n",
|
|
|
|
subsession->codecName());
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
// Hack: Create a 'RTPState' structure containing the state that
|
|
|
|
// we just created, and store it in the demuxer's 'priv' field:
|
|
|
|
RTPState* rtpState = new RTPState;
|
|
|
|
rtpState->sdpDescription = sdpDescription;
|
|
|
|
rtpState->rtspClient = rtspClient;
|
|
|
|
rtpState->mediaSession = mediaSession;
|
|
|
|
rtpState->audioBufferQueue
|
|
|
|
= new ReadBufferQueue(audioSubsession, demuxer, "audio");
|
|
|
|
rtpState->videoBufferQueue
|
|
|
|
= new ReadBufferQueue(videoSubsession, demuxer, "video");
|
|
|
|
rtpState->isMPEG = isMPEG;
|
|
|
|
|
|
|
|
demuxer->priv = rtpState;
|
|
|
|
} while (0);
|
|
|
|
}
|
|
|
|
|
|
|
|
extern "C" int demux_is_mpeg_rtp_stream(demuxer_t* demuxer) {
|
|
|
|
// Get the RTP state that was stored in the demuxer's 'priv' field:
|
|
|
|
RTPState* rtpState = (RTPState*)(demuxer->priv);
|
|
|
|
return rtpState->isMPEG;
|
|
|
|
}
|
|
|
|
|
|
|
|
static Boolean deliverBufferIfAvailable(ReadBufferQueue* bufferQueue,
|
|
|
|
demux_stream_t* ds); // forward
|
|
|
|
|
|
|
|
extern "C" int demux_rtp_fill_buffer(demuxer_t* demuxer, demux_stream_t* ds) {
|
|
|
|
// Get a filled-in "demux_packet" from the RTP source, and deliver it.
|
|
|
|
// Note that this is called as a synchronous read operation, so it needs
|
|
|
|
// to block in the (hopefully infrequent) case where no packet is
|
|
|
|
// immediately available.
|
|
|
|
|
|
|
|
// Begin by finding the buffer queue that we want to read from:
|
|
|
|
// (Get this from the RTP state, which we stored in
|
|
|
|
// the demuxer's 'priv' field)
|
|
|
|
RTPState* rtpState = (RTPState*)(demuxer->priv);
|
|
|
|
ReadBufferQueue* bufferQueue = NULL;
|
|
|
|
if (ds == demuxer->video) {
|
|
|
|
bufferQueue = rtpState->videoBufferQueue;
|
|
|
|
} else if (ds == demuxer->audio) {
|
|
|
|
bufferQueue = rtpState->audioBufferQueue;
|
|
|
|
} else {
|
|
|
|
fprintf(stderr, "demux_rtp_fill_buffer: internal error: unknown stream\n");
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (bufferQueue == NULL || bufferQueue->readSource() == NULL) {
|
|
|
|
fprintf(stderr, "demux_rtp_fill_buffer failed: no appropriate RTP subsession has been set up\n");
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
// Check whether there's a full buffer to deliver to the client:
|
|
|
|
bufferQueue->blockingFlag = 0;
|
|
|
|
while (!deliverBufferIfAvailable(bufferQueue, ds)) {
|
|
|
|
// Because we weren't able to deliver a buffer to the client immediately,
|
|
|
|
// block myself until one comes available:
|
|
|
|
TaskScheduler& scheduler
|
|
|
|
= bufferQueue->readSource()->envir().taskScheduler();
|
|
|
|
scheduler.blockMyself(&bufferQueue->blockingFlag);
|
|
|
|
}
|
|
|
|
|
|
|
|
if (demuxer->stream->eof) return 0; // source stream has closed down
|
|
|
|
return 1;
|
|
|
|
}
|
|
|
|
|
|
|
|
extern "C" void demux_close_rtp(demuxer_t* demuxer) {
|
|
|
|
// Reclaim all RTP-related state:
|
|
|
|
|
|
|
|
// Get the RTP state that was stored in the demuxer's 'priv' field:
|
|
|
|
RTPState* rtpState = (RTPState*)(demuxer->priv);
|
|
|
|
UsageEnvironment* env = NULL;
|
|
|
|
TaskScheduler* scheduler = NULL;
|
|
|
|
if (rtpState->mediaSession != NULL) {
|
|
|
|
env = &(rtpState->mediaSession->envir());
|
|
|
|
scheduler = &(env->taskScheduler());
|
|
|
|
}
|
|
|
|
Medium::close(rtpState->mediaSession);
|
|
|
|
Medium::close(rtpState->rtspClient);
|
|
|
|
delete rtpState->audioBufferQueue;
|
|
|
|
delete rtpState->videoBufferQueue;
|
|
|
|
delete rtpState->sdpDescription;
|
|
|
|
delete rtpState;
|
|
|
|
|
|
|
|
delete env; delete scheduler;
|
|
|
|
}
|
|
|
|
|
|
|
|
////////// Extra routines that help implement the above interface functions:
|
|
|
|
|
|
|
|
static void scheduleNewBufferRead(ReadBufferQueue* bufferQueue); // forward
|
|
|
|
|
|
|
|
static Boolean deliverBufferIfAvailable(ReadBufferQueue* bufferQueue,
|
|
|
|
demux_stream_t* ds) {
|
|
|
|
Boolean deliveredBuffer = False;
|
|
|
|
ReadBuffer* readBuffer = bufferQueue->dequeue();
|
|
|
|
if (readBuffer != NULL) {
|
|
|
|
// Append the packet to the reader's DS stream:
|
|
|
|
ds_add_packet(ds, readBuffer->dp());
|
|
|
|
deliveredBuffer = True;
|
|
|
|
}
|
|
|
|
|
|
|
|
// Arrange to read a new packet into this queue:
|
|
|
|
scheduleNewBufferRead(bufferQueue);
|
|
|
|
|
|
|
|
return deliveredBuffer;
|
|
|
|
}
|
|
|
|
|
|
|
|
static void afterReading(void* clientData, unsigned frameSize,
|
|
|
|
struct timeval presentationTime); // forward
|
|
|
|
static void onSourceClosure(void* clientData); // forward
|
|
|
|
|
|
|
|
static void scheduleNewBufferRead(ReadBufferQueue* bufferQueue) {
|
|
|
|
if (bufferQueue->readSource()->isCurrentlyAwaitingData()) return;
|
|
|
|
// a read from this source is already in progress
|
|
|
|
|
|
|
|
// Allocate a new packet buffer, and arrange to read into it:
|
|
|
|
unsigned const bufferSize = 30000; // >= the largest conceivable RTP packet
|
|
|
|
demux_packet_t* dp = new_demux_packet(bufferSize);
|
|
|
|
if (dp == NULL) return;
|
|
|
|
ReadBuffer* readBuffer = new ReadBuffer(bufferQueue, dp);
|
|
|
|
|
|
|
|
// Schedule the read operation:
|
|
|
|
bufferQueue->readSource()->getNextFrame(dp->buffer, bufferSize,
|
|
|
|
afterReading, readBuffer,
|
|
|
|
onSourceClosure, readBuffer);
|
|
|
|
}
|
|
|
|
|
|
|
|
static void afterReading(void* clientData, unsigned frameSize,
|
|
|
|
struct timeval /*presentationTime*/) {
|
|
|
|
ReadBuffer* readBuffer = (ReadBuffer*)clientData;
|
|
|
|
ReadBufferQueue* bufferQueue = readBuffer->ourQueue();
|
|
|
|
demuxer_t* demuxer = bufferQueue->ourDemuxer();
|
|
|
|
|
|
|
|
if (frameSize > 0) demuxer->stream->eof = 0;
|
|
|
|
|
|
|
|
demux_packet_t* dp = readBuffer->dp();
|
|
|
|
dp->len = frameSize;
|
|
|
|
dp->pts = 0;
|
|
|
|
dp->pos = demuxer->filepos;
|
|
|
|
demuxer->filepos += frameSize;
|
|
|
|
if (!readBuffer->enqueue()) {
|
|
|
|
// The queue is full, so discard the buffer:
|
|
|
|
delete readBuffer;
|
|
|
|
}
|
|
|
|
|
|
|
|
// Signal any pending 'blockMyself()' call on this queue:
|
|
|
|
bufferQueue->blockingFlag = ~0;
|
|
|
|
|
|
|
|
// Finally, arrange to do another read, if appropriate
|
|
|
|
scheduleNewBufferRead(bufferQueue);
|
|
|
|
}
|
|
|
|
|
|
|
|
static void onSourceClosure(void* clientData) {
|
|
|
|
ReadBuffer* readBuffer = (ReadBuffer*)clientData;
|
|
|
|
ReadBufferQueue* bufferQueue = readBuffer->ourQueue();
|
|
|
|
demuxer_t* demuxer = bufferQueue->ourDemuxer();
|
|
|
|
|
|
|
|
demuxer->stream->eof = 1;
|
|
|
|
|
|
|
|
// Signal any pending 'blockMyself()' call on this queue:
|
|
|
|
bufferQueue->blockingFlag = ~0;
|
|
|
|
}
|
|
|
|
|
|
|
|
////////// "ReadBuffer" and "ReadBufferQueue" implementation:
|
|
|
|
|
|
|
|
#define MAX_QUEUE_SIZE 5
|
|
|
|
|
|
|
|
ReadBuffer::ReadBuffer(ReadBufferQueue* ourQueue, demux_packet_t* dp)
|
|
|
|
: next(NULL), fDP(dp), fOurQueue(ourQueue) {
|
|
|
|
}
|
|
|
|
|
|
|
|
Boolean ReadBuffer::enqueue() {
|
|
|
|
if (fOurQueue->counter >= MAX_QUEUE_SIZE) {
|
|
|
|
// This queue is full. Clear out an old entry from it, so that
|
|
|
|
// this new one will fit:
|
|
|
|
while (fOurQueue->counter >= MAX_QUEUE_SIZE) {
|
|
|
|
delete fOurQueue->dequeue();
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
// Add ourselves to the tail of our queue:
|
|
|
|
if (fOurQueue->tail == NULL) {
|
|
|
|
fOurQueue->head = this;
|
|
|
|
} else {
|
|
|
|
fOurQueue->tail->next = this;
|
|
|
|
}
|
|
|
|
fOurQueue->tail = this;
|
|
|
|
++fOurQueue->counter;
|
|
|
|
|
|
|
|
return True;
|
|
|
|
}
|
|
|
|
|
|
|
|
ReadBuffer::~ReadBuffer() {
|
|
|
|
free_demux_packet(fDP);
|
|
|
|
delete next;
|
|
|
|
}
|
|
|
|
|
|
|
|
ReadBufferQueue::ReadBufferQueue(MediaSubsession* subsession,
|
|
|
|
demuxer_t* demuxer, char const* tag)
|
|
|
|
: head(NULL), tail(NULL), counter(0),
|
|
|
|
fReadSource(subsession == NULL ? NULL : subsession->readSource()),
|
|
|
|
fOurDemuxer(demuxer), fTag(strdup(tag)) {
|
|
|
|
}
|
|
|
|
|
|
|
|
ReadBufferQueue::~ReadBufferQueue() {
|
|
|
|
delete head;
|
|
|
|
delete fTag;
|
|
|
|
}
|
|
|
|
|
|
|
|
ReadBuffer* ReadBufferQueue::dequeue() {
|
|
|
|
ReadBuffer* readBuffer = head;
|
|
|
|
if (readBuffer != NULL) {
|
|
|
|
head = readBuffer->next;
|
|
|
|
if (head == NULL) tail = NULL;
|
|
|
|
--counter;
|
|
|
|
readBuffer->next = NULL;
|
|
|
|
}
|
|
|
|
return readBuffer;
|
|
|
|
}
|