diff options
Diffstat (limited to 'libmpdemux/demux_rtp_codec.cpp')
| -rw-r--r-- | libmpdemux/demux_rtp_codec.cpp | 426 |
1 files changed, 0 insertions, 426 deletions
diff --git a/libmpdemux/demux_rtp_codec.cpp b/libmpdemux/demux_rtp_codec.cpp deleted file mode 100644 index cb21e6b633..0000000000 --- a/libmpdemux/demux_rtp_codec.cpp +++ /dev/null @@ -1,426 +0,0 @@ -/* - * 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_context3(NULL); - // 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; -} |