mirror of
https://github.com/mpv-player/mpv
synced 2024-12-24 15:52:25 +00:00
16793d27a7
Did not work for me, but reason is unclear. This at least moves things one step step closer to working git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@19421 b3059339-0415-0410-9bf9-f77b7e298cf2
275 lines
11 KiB
C++
275 lines
11 KiB
C++
////////// Codec-specific routines used to interface between "MPlayer"
|
|
////////// and the "LIVE555 Streaming Media" libraries:
|
|
|
|
#include "demux_rtp_internal.h"
|
|
extern "C" {
|
|
#include "stheader.h"
|
|
}
|
|
|
|
static void
|
|
needVideoFrameRate(demuxer_t* demuxer, MediaSubsession* subsession); // forward
|
|
static Boolean
|
|
parseQTState_video(QuickTimeGenericRTPSource::QTState const& qtState,
|
|
unsigned& fourcc); // forward
|
|
static Boolean
|
|
parseQTState_audio(QuickTimeGenericRTPSource::QTState const& qtState,
|
|
unsigned& fourcc, unsigned& numChannels); // forward
|
|
|
|
void rtpCodecInitialize_video(demuxer_t* demuxer,
|
|
MediaSubsession* subsession,
|
|
unsigned& flags) {
|
|
flags = 0;
|
|
// Create a dummy video stream header
|
|
// to make the main MPlayer code happy:
|
|
sh_video_t* sh_video = new_sh_video(demuxer,0);
|
|
BITMAPINFOHEADER* bih
|
|
= (BITMAPINFOHEADER*)calloc(1,sizeof(BITMAPINFOHEADER));
|
|
bih->biSize = sizeof(BITMAPINFOHEADER);
|
|
sh_video->bih = bih;
|
|
demux_stream_t* d_video = demuxer->video;
|
|
d_video->sh = sh_video; sh_video->ds = d_video;
|
|
|
|
// 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.)
|
|
if (strcmp(subsession->codecName(), "MPV") == 0) {
|
|
flags |= RTPSTATE_IS_MPEG12_VIDEO;
|
|
} else if (strcmp(subsession->codecName(), "MP1S") == 0 ||
|
|
strcmp(subsession->codecName(), "MP2T") == 0) {
|
|
flags |= RTPSTATE_IS_MPEG12_VIDEO|RTPSTATE_IS_MULTIPLEXED;
|
|
} else if (strcmp(subsession->codecName(), "H263") == 0 ||
|
|
strcmp(subsession->codecName(), "H263-1998") == 0) {
|
|
bih->biCompression = sh_video->format
|
|
= mmioFOURCC('H','2','6','3');
|
|
needVideoFrameRate(demuxer, subsession);
|
|
} else if (strcmp(subsession->codecName(), "H264") == 0) {
|
|
bih->biCompression = sh_video->format
|
|
= mmioFOURCC('H','2','6','4');
|
|
needVideoFrameRate(demuxer, subsession);
|
|
} else if (strcmp(subsession->codecName(), "H261") == 0) {
|
|
bih->biCompression = sh_video->format
|
|
= mmioFOURCC('H','2','6','1');
|
|
needVideoFrameRate(demuxer, subsession);
|
|
} else if (strcmp(subsession->codecName(), "JPEG") == 0) {
|
|
bih->biCompression = sh_video->format
|
|
= mmioFOURCC('M','J','P','G');
|
|
needVideoFrameRate(demuxer, subsession);
|
|
} else if (strcmp(subsession->codecName(), "MP4V-ES") == 0) {
|
|
bih->biCompression = sh_video->format
|
|
= mmioFOURCC('m','p','4','v');
|
|
// For the codec to work correctly, it may need a 'VOL Header' to be
|
|
// inserted at the front of the data stream. Construct this from the
|
|
// "config" MIME parameter, which was present (hopefully) in the
|
|
// session's SDP description:
|
|
unsigned configLen;
|
|
unsigned char* configData
|
|
= parseGeneralConfigStr(subsession->fmtp_config(), configLen);
|
|
insertRTPData(demuxer, demuxer->video, configData, configLen);
|
|
needVideoFrameRate(demuxer, subsession);
|
|
} else if (strcmp(subsession->codecName(), "X-QT") == 0 ||
|
|
strcmp(subsession->codecName(), "X-QUICKTIME") == 0) {
|
|
// QuickTime generic RTP format, as described in
|
|
// http://developer.apple.com/quicktime/icefloe/dispatch026.html
|
|
|
|
// We can't initialize this stream until we've received the first packet
|
|
// that has QuickTime "sdAtom" information in the header. So, keep
|
|
// reading packets until we get one:
|
|
unsigned char* packetData; unsigned packetDataLen; float pts;
|
|
QuickTimeGenericRTPSource* qtRTPSource
|
|
= (QuickTimeGenericRTPSource*)(subsession->rtpSource());
|
|
unsigned fourcc;
|
|
do {
|
|
if (!awaitRTPPacket(demuxer, demuxer->video,
|
|
packetData, packetDataLen, pts)) {
|
|
return;
|
|
}
|
|
} while (!parseQTState_video(qtRTPSource->qtState, fourcc));
|
|
|
|
bih->biCompression = sh_video->format = fourcc;
|
|
} else {
|
|
fprintf(stderr,
|
|
"Unknown MPlayer format code for MIME type \"video/%s\"\n",
|
|
subsession->codecName());
|
|
}
|
|
}
|
|
|
|
void rtpCodecInitialize_audio(demuxer_t* demuxer,
|
|
MediaSubsession* subsession,
|
|
unsigned& flags) {
|
|
flags = 0;
|
|
// Create a dummy audio stream header
|
|
// to make the main MPlayer code happy:
|
|
sh_audio_t* sh_audio = new_sh_audio(demuxer,0);
|
|
WAVEFORMATEX* wf = (WAVEFORMATEX*)calloc(1,sizeof(WAVEFORMATEX));
|
|
sh_audio->wf = wf;
|
|
demux_stream_t* d_audio = demuxer->audio;
|
|
d_audio->sh = sh_audio; sh_audio->ds = d_audio;
|
|
|
|
wf->nChannels = subsession->numChannels();
|
|
|
|
// 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
|
|
if (strcmp(subsession->codecName(), "MPA") == 0 ||
|
|
strcmp(subsession->codecName(), "MPA-ROBUST") == 0 ||
|
|
strcmp(subsession->codecName(), "X-MP3-DRAFT-00") == 0) {
|
|
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
|
|
} else if (strcmp(subsession->codecName(), "AC3") == 0) {
|
|
wf->wFormatTag = sh_audio->format = 0x2000;
|
|
wf->nSamplesPerSec = 0; // sample rate is deduced from the data
|
|
} else if (strcmp(subsession->codecName(), "L16") == 0) {
|
|
wf->wFormatTag = sh_audio->format = 0x736f7774; // "twos"
|
|
wf->nBlockAlign = 1;
|
|
wf->wBitsPerSample = 16;
|
|
wf->cbSize = 0;
|
|
} else if (strcmp(subsession->codecName(), "L8") == 0) {
|
|
wf->wFormatTag = sh_audio->format = 0x20776172; // "raw "
|
|
wf->nBlockAlign = 1;
|
|
wf->wBitsPerSample = 8;
|
|
wf->cbSize = 0;
|
|
} else if (strcmp(subsession->codecName(), "PCMU") == 0) {
|
|
wf->wFormatTag = sh_audio->format = 0x7;
|
|
wf->nAvgBytesPerSec = 8000;
|
|
wf->nBlockAlign = 1;
|
|
wf->wBitsPerSample = 8;
|
|
wf->cbSize = 0;
|
|
} else if (strcmp(subsession->codecName(), "PCMA") == 0) {
|
|
wf->wFormatTag = sh_audio->format = 0x6;
|
|
wf->nAvgBytesPerSec = 8000;
|
|
wf->nBlockAlign = 1;
|
|
wf->wBitsPerSample = 8;
|
|
wf->cbSize = 0;
|
|
} else if (strcmp(subsession->codecName(), "GSM") == 0) {
|
|
wf->wFormatTag = sh_audio->format = mmioFOURCC('a','g','s','m');
|
|
wf->nAvgBytesPerSec = 1650;
|
|
wf->nBlockAlign = 33;
|
|
wf->wBitsPerSample = 16;
|
|
wf->cbSize = 0;
|
|
} else if (strcmp(subsession->codecName(), "QCELP") == 0) {
|
|
wf->wFormatTag = sh_audio->format = mmioFOURCC('Q','c','l','p');
|
|
wf->nAvgBytesPerSec = 1750;
|
|
wf->nBlockAlign = 35;
|
|
wf->wBitsPerSample = 16;
|
|
wf->cbSize = 0;
|
|
} else if (strcmp(subsession->codecName(), "MP4A-LATM") == 0) {
|
|
wf->wFormatTag = sh_audio->format = mmioFOURCC('m','p','4','a');
|
|
// For the codec to work correctly, it needs "AudioSpecificConfig"
|
|
// data, which is parsed from the "StreamMuxConfig" string that
|
|
// was present (hopefully) in the SDP description:
|
|
unsigned codecdata_len;
|
|
sh_audio->codecdata
|
|
= parseStreamMuxConfigStr(subsession->fmtp_config(),
|
|
codecdata_len);
|
|
sh_audio->codecdata_len = codecdata_len;
|
|
} else if (strcmp(subsession->codecName(), "MPEG4-GENERIC") == 0) {
|
|
wf->wFormatTag = sh_audio->format = mmioFOURCC('m','p','4','a');
|
|
// For the codec to work correctly, it needs "AudioSpecificConfig"
|
|
// data, which was present (hopefully) in the SDP description:
|
|
unsigned codecdata_len;
|
|
sh_audio->codecdata
|
|
= parseGeneralConfigStr(subsession->fmtp_config(),
|
|
codecdata_len);
|
|
sh_audio->codecdata_len = codecdata_len;
|
|
} else if (strcmp(subsession->codecName(), "X-QT") == 0 ||
|
|
strcmp(subsession->codecName(), "X-QUICKTIME") == 0) {
|
|
// QuickTime generic RTP format, as described in
|
|
// http://developer.apple.com/quicktime/icefloe/dispatch026.html
|
|
|
|
// We can't initialize this stream until we've received the first packet
|
|
// that has QuickTime "sdAtom" information in the header. So, keep
|
|
// reading packets until we get one:
|
|
unsigned char* packetData; unsigned packetDataLen; float pts;
|
|
QuickTimeGenericRTPSource* qtRTPSource
|
|
= (QuickTimeGenericRTPSource*)(subsession->rtpSource());
|
|
unsigned fourcc, numChannels;
|
|
do {
|
|
if (!awaitRTPPacket(demuxer, demuxer->audio,
|
|
packetData, packetDataLen, pts)) {
|
|
return;
|
|
}
|
|
} while (!parseQTState_audio(qtRTPSource->qtState, fourcc, numChannels));
|
|
|
|
wf->wFormatTag = sh_audio->format = fourcc;
|
|
wf->nChannels = numChannels;
|
|
} else {
|
|
fprintf(stderr,
|
|
"Unknown MPlayer format code for MIME type \"audio/%s\"\n",
|
|
subsession->codecName());
|
|
}
|
|
}
|
|
|
|
static void needVideoFrameRate(demuxer_t* demuxer,
|
|
MediaSubsession* subsession) {
|
|
// For some codecs, MPlayer's decoding software can't (or refuses to :-)
|
|
// figure out the frame rate by itself, so (unless the user specifies
|
|
// it manually, using "-fps") we figure it out ourselves here, using the
|
|
// presentation timestamps in successive packets,
|
|
extern float force_fps; if (force_fps != 0.0) return; // user used "-fps"
|
|
|
|
demux_stream_t* d_video = demuxer->video;
|
|
sh_video_t* sh_video = (sh_video_t*)(d_video->sh);
|
|
|
|
// If we already know the subsession's video frame rate, use it:
|
|
int fps = (int)(subsession->videoFPS());
|
|
if (fps != 0) {
|
|
sh_video->fps = fps;
|
|
return;
|
|
}
|
|
|
|
// Keep looking at incoming frames until we see two with different,
|
|
// non-zero "pts" timestamps:
|
|
unsigned char* packetData; unsigned packetDataLen;
|
|
float lastPTS = 0.0, curPTS;
|
|
unsigned const maxNumFramesToWaitFor = 300;
|
|
for (unsigned i = 0; i < maxNumFramesToWaitFor; ++i) {
|
|
if (!awaitRTPPacket(demuxer, d_video, packetData, packetDataLen, curPTS)) {
|
|
break;
|
|
}
|
|
|
|
if (curPTS > lastPTS && lastPTS != 0.0) {
|
|
// Use the difference between these two "pts"s to guess the frame rate.
|
|
// (should really check that there were no missing frames inbetween)#####
|
|
// Guess the frame rate as an integer. If it's not, use "-fps" instead.
|
|
fps = (int)(1/(curPTS-lastPTS) + 0.5); // rounding
|
|
fprintf(stderr, "demux_rtp: Guessed the video frame rate as %d frames-per-second.\n\t(If this is wrong, use the \"-fps <frame-rate>\" option instead.)\n", fps);
|
|
sh_video->fps = fps;
|
|
return;
|
|
}
|
|
lastPTS = curPTS;
|
|
}
|
|
fprintf(stderr, "demux_rtp: Failed to guess the video frame rate\n");
|
|
}
|
|
|
|
static Boolean
|
|
parseQTState_video(QuickTimeGenericRTPSource::QTState const& qtState,
|
|
unsigned& fourcc) {
|
|
// qtState's "sdAtom" field is supposed to contain a QuickTime video
|
|
// 'sample description' atom. This atom's name is the 'fourcc' that we want:
|
|
char const* sdAtom = qtState.sdAtom;
|
|
if (sdAtom == NULL || qtState.sdAtomSize < 2*4) return False;
|
|
|
|
fourcc = *(unsigned*)(&sdAtom[4]); // put in host order
|
|
return True;
|
|
}
|
|
|
|
static Boolean
|
|
parseQTState_audio(QuickTimeGenericRTPSource::QTState const& qtState,
|
|
unsigned& fourcc, unsigned& numChannels) {
|
|
// qtState's "sdAtom" field is supposed to contain a QuickTime audio
|
|
// 'sample description' atom. This atom's name is the 'fourcc' that we want.
|
|
// Also, the top half of the 5th word following the atom name should
|
|
// contain the number of channels ("numChannels") that we want:
|
|
char const* sdAtom = qtState.sdAtom;
|
|
if (sdAtom == NULL || qtState.sdAtomSize < 7*4) return False;
|
|
|
|
fourcc = *(unsigned*)(&sdAtom[4]); // put in host order
|
|
|
|
char const* word7Ptr = &sdAtom[6*4];
|
|
numChannels = (word7Ptr[0]<<8)|(word7Ptr[1]);
|
|
return True;
|
|
}
|