mirror of
https://github.com/mpv-player/mpv
synced 2024-12-09 08:29:42 +00:00
2e1cdcb9e6
Remove support for building the player without libavcodec and libavformat. These libraries are now always required.
427 lines
17 KiB
C++
427 lines
17 KiB
C++
/*
|
|
* codec-specific routines used to interface between MPlayer
|
|
* and the "LIVE555 Streaming Media" libraries
|
|
*
|
|
* This file is part of MPlayer.
|
|
*
|
|
* MPlayer is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* MPlayer is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License along
|
|
* with MPlayer; if not, write to the Free Software Foundation, Inc.,
|
|
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
|
|
*/
|
|
|
|
#include "demux_rtp_internal.h"
|
|
extern "C" {
|
|
#include <limits.h>
|
|
#include <math.h>
|
|
#include "stheader.h"
|
|
#include "libavutil/base64.h"
|
|
}
|
|
|
|
AVCodecParserContext * h264parserctx;
|
|
AVCodecContext *avcctx;
|
|
|
|
// Copied from vlc
|
|
static unsigned char* parseH264ConfigStr( char const* configStr,
|
|
unsigned int& configSize )
|
|
{
|
|
|
|
char *dup, *psz;
|
|
int i, i_records = 1;
|
|
|
|
if( configSize )
|
|
configSize = 0;
|
|
if( configStr == NULL || *configStr == '\0' )
|
|
return NULL;
|
|
psz = dup = strdup( configStr );
|
|
|
|
/* Count the number of comma's */
|
|
for( psz = dup; *psz != '\0'; ++psz )
|
|
{
|
|
if( *psz == ',')
|
|
{
|
|
++i_records;
|
|
*psz = '\0';
|
|
}
|
|
}
|
|
|
|
unsigned char *cfg = new unsigned char[5 * strlen(dup)];
|
|
psz = dup;
|
|
for( i = 0; i < i_records; i++ )
|
|
{
|
|
|
|
cfg[configSize++] = 0x00;
|
|
cfg[configSize++] = 0x00;
|
|
cfg[configSize++] = 0x01;
|
|
configSize += av_base64_decode( (uint8_t*)&cfg[configSize],
|
|
psz,
|
|
5 * strlen(dup) - 3 );
|
|
|
|
psz += strlen(psz)+1;
|
|
}
|
|
free( dup );
|
|
|
|
return cfg;
|
|
}
|
|
|
|
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
|
|
|
|
static BITMAPINFOHEADER * insertVideoExtradata(BITMAPINFOHEADER *bih,
|
|
unsigned char * extraData,
|
|
unsigned size)
|
|
{
|
|
BITMAPINFOHEADER * original = bih;
|
|
if (!size || size > INT_MAX - sizeof(BITMAPINFOHEADER))
|
|
return bih;
|
|
bih = (BITMAPINFOHEADER*)realloc(bih, sizeof(BITMAPINFOHEADER) + size);
|
|
if (!bih)
|
|
return original;
|
|
bih->biSize = sizeof(BITMAPINFOHEADER) + size;
|
|
memcpy(bih+1, extraData, size);
|
|
return bih;
|
|
}
|
|
|
|
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(), "H263-2000") == 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');
|
|
unsigned int configLen = 0;
|
|
unsigned char* configData
|
|
= parseH264ConfigStr(subsession->fmtp_spropparametersets(), configLen);
|
|
sh_video->bih = bih = insertVideoExtradata(bih, configData, configLen);
|
|
int fooLen;
|
|
const uint8_t* fooData;
|
|
h264parserctx = av_parser_init(CODEC_ID_H264);
|
|
avcctx = avcodec_alloc_context();
|
|
// Pass the config to the parser
|
|
h264parserctx->parser->parser_parse(h264parserctx, avcctx,
|
|
&fooData, &fooLen, configData, configLen);
|
|
delete[] configData;
|
|
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);
|
|
sh_video->bih = bih = insertVideoExtradata(bih, 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;
|
|
bih->biWidth = qtRTPSource->qtState.width;
|
|
bih->biHeight = qtRTPSource->qtState.height;
|
|
if (qtRTPSource->qtState.sdAtomSize > 83)
|
|
bih->biBitCount = qtRTPSource->qtState.sdAtom[83];
|
|
uint8_t *pos = (uint8_t*)qtRTPSource->qtState.sdAtom + 86;
|
|
uint8_t *endpos = (uint8_t*)qtRTPSource->qtState.sdAtom
|
|
+ qtRTPSource->qtState.sdAtomSize;
|
|
while (pos+8 < endpos) {
|
|
unsigned atomLength = pos[0]<<24 | pos[1]<<16 | pos[2]<<8 | pos[3];
|
|
if (atomLength == 0 || atomLength > endpos-pos) break;
|
|
if (((!memcmp(pos+4, "avcC", 4) && fourcc==mmioFOURCC('a','v','c','1')) ||
|
|
!memcmp(pos+4, "esds", 4) ||
|
|
(!memcmp(pos+4, "SMI ", 4) && fourcc==mmioFOURCC('S','V','Q','3'))) &&
|
|
atomLength > 8) {
|
|
sh_video->bih = bih =
|
|
insertVideoExtradata(bih, pos+8, atomLength-8);
|
|
break;
|
|
}
|
|
pos += atomLength;
|
|
}
|
|
needVideoFrameRate(demuxer, subsession);
|
|
} 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;
|
|
d_audio->id = sh_audio->aid;
|
|
|
|
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(), "AMR") == 0) {
|
|
wf->wFormatTag = sh_audio->format = mmioFOURCC('s','a','m','r');
|
|
} else if (strcmp(subsession->codecName(), "AMR-WB") == 0) {
|
|
wf->wFormatTag = sh_audio->format = mmioFOURCC('s','a','w','b');
|
|
} 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;
|
|
//faad doesn't understand LATM's data length field, so omit it
|
|
((MPEG4LATMAudioRTPSource*)subsession->rtpSource())->omitLATMDataLengthField();
|
|
} 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;
|
|
|
|
if (qtRTPSource->qtState.sdAtomSize > 33) {
|
|
wf->wBitsPerSample = qtRTPSource->qtState.sdAtom[27];
|
|
wf->nSamplesPerSec = qtRTPSource->qtState.sdAtom[32]<<8|qtRTPSource->qtState.sdAtom[33];
|
|
}
|
|
uint8_t *pos = (uint8_t*)qtRTPSource->qtState.sdAtom + 52;
|
|
uint8_t *endpos = (uint8_t*)qtRTPSource->qtState.sdAtom
|
|
+ qtRTPSource->qtState.sdAtomSize;
|
|
while (pos+8 < endpos) {
|
|
unsigned atomLength = pos[0]<<24 | pos[1]<<16 | pos[2]<<8 | pos[3];
|
|
if (atomLength == 0 || atomLength > endpos-pos) break;
|
|
if (!memcmp(pos+4, "wave", 4) && fourcc==mmioFOURCC('Q','D','M','2') &&
|
|
atomLength > 8 &&
|
|
atomLength <= INT_MAX) {
|
|
sh_audio->codecdata = (unsigned char*) malloc(atomLength-8);
|
|
if (sh_audio->codecdata) {
|
|
memcpy(sh_audio->codecdata, pos+8, atomLength-8);
|
|
sh_audio->codecdata_len = atomLength-8;
|
|
}
|
|
break;
|
|
}
|
|
pos += atomLength;
|
|
}
|
|
} 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 double 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;
|
|
sh_video->frametime = 1.0f/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;
|
|
int lastfps = 0;
|
|
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/fabs(curPTS-lastPTS) + 0.5); // rounding
|
|
if (fps == lastfps) {
|
|
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;
|
|
sh_video->frametime=1.0f/fps;
|
|
return;
|
|
}
|
|
if (fps>lastfps) lastfps = fps;
|
|
}
|
|
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;
|
|
}
|