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Diffstat (limited to 'src/multiplexer.cc')
| -rw-r--r-- | src/multiplexer.cc | 495 |
1 files changed, 0 insertions, 495 deletions
diff --git a/src/multiplexer.cc b/src/multiplexer.cc deleted file mode 100644 index 7a8b095..0000000 --- a/src/multiplexer.cc +++ /dev/null @@ -1,495 +0,0 @@ -/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ -/*************************************************************************** - * multiplexer.cc - * - * Wed Aug 31 13:05:18 CEST 2005 - * Copyright 2005 Bent Bisballe Nyeng - * deva@aasimon.org - ****************************************************************************/ - -/* - * This file is part of MIaV. - * - * MIaV 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. - * - * MIaV 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 MIaV; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. - */ - -#include "config.h" -#include "multiplexer.h" - -#include <netinet/in.h> -#include <math.h> - -#include "util.h" - -#define SIZEOF(x) (sizeof(x)-1) - -#define MASK3 0x7 -#define MASK15 0x7FFF -#define TIMECODE32_30(x) ((x >> 30) & MASK3 ) -#define TIMECODE29_15(x) ((x >> 15) & MASK15) -#define TIMECODE14_0(x) ((x >> 0) & MASK15) - -// Audio index lists -/* -static unsigned int frequency_index[4] = {44100, 48000, 32000, 0}; -//static unsigned int slots [4] = {12, 144, 0, 0}; -//static unsigned int slot_index [4] = {144, 144, 144, 0}; -//static unsigned int sample_index [4] = {384, 1152, 0, 0}; -static unsigned int bitrate_index [4][16] = { - {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,0}, // Reserved - {0,32,40,48, 56, 64, 80, 96,112,128,160,192,224,256,320,0}, // Layer III - {0,32,48,56, 64, 80, 96,112,128,160,192,224,256,320,384,0}, // Layer II - {0,32,64,96,128,160,192,224,256,288,320,352,384,416,448,0} // Layer I -}; -static char layer_index[4][12] = { "Reserved", "Layer III", "Layer II", "Layer I" }; -static char mode_index[4][32] = { "Stereo", "Joint Stereo", "Dual Channel", "Single Channel"}; -static char protection_index[2][32] = { "CRC check enabled", "CRC check disabled" }; -*/ -//static unsigned short int syncword = 0xFFF; - -// Video index lists -/* -#define FORBIDDEN -1.0 -#define RESERVED -2.0 -static double picture_rate_index[16] = { - FORBIDDEN, 23.976, 24.0, 25.0, 29.97, 30.0, 50.0, 59.94, 60, - RESERVED, RESERVED, RESERVED, RESERVED, RESERVED, RESERVED, RESERVED -}; -*/ -Multiplexer::Multiplexer(File *f, Multicast *m, Info *i, volatile bool *r, - ThreadSafeQueuePriority *video_q, - ThreadSafeQueuePriority *audio_q) -{ - running = r; - file = f; - multicast = m; - info = i; - - frame[TYPE_VIDEO] = NULL; - written[TYPE_VIDEO] = 0.0; - - frame[TYPE_AUDIO] = NULL; - written[TYPE_AUDIO] = 0.0; - - write_audio_packet = 0; - write_system_header = 0; - - audio_header_read = false; - - queue[TYPE_VIDEO] = video_q; - queue[TYPE_AUDIO] = audio_q; - - SCR = 3904;//0x40010003LL;//0x1E80; - -} - -Multiplexer::~Multiplexer() -{ -} - -int Multiplexer::Write(void* data, int size) -{ - int ret; - - if(multicast && multicast->multicast_audio == true) multicast->Write(data, size); - ret = file->Write(data, size); - - return ret; -} - -int Multiplexer::Write(char* data, int size) -{ - return Write((void*)data, size); -} - -int Multiplexer::Write(unsigned long long int val) -{ - int res; - int written = 0; - unsigned long int *h_u = (unsigned long int *)&val; - unsigned long int *h_l = (unsigned long int *)(((char*)&val) + sizeof(unsigned long int)); - - *h_u = htonl(*h_u); - *h_l = htonl(*h_l); - - if((res = Write((void*)h_l, sizeof(*h_l))) < 0) { - return res; - } - written += res; - - if((res = Write((void*)h_u, sizeof(*h_u))) < 0) { - return res; - } - written += res; - - return written; -} - -int Multiplexer::Write(long long int val) -{ - int res; - int written = 0; - unsigned long int *h_u = (unsigned long int *)&val; - unsigned long int *h_l = (unsigned long int *)(((char*)&val) + sizeof(unsigned long int)); - - *h_u = htonl(*h_u); - *h_l = htonl(*h_l); - - if((res = Write((void*)h_l, sizeof(*h_l))) < 0) { - return res; - } - written += res; - - if((res = Write((void*)h_u, sizeof(*h_u))) < 0) { - return res; - } - written += res; - - return written; -} - -int Multiplexer::Write(long int val) -{ - val = htonl(val); - - return Write((char*)&val, sizeof(val)); -} - -int Multiplexer::Write(unsigned long int val) -{ - val = htonl(val); - - return Write((char*)&val, sizeof(val)); -} - -int Multiplexer::Write(int val) -{ - val = htonl(val); - - return Write((char*)&val, sizeof(val)); -} - -int Multiplexer::Write(unsigned int val) -{ - val = htonl(val); - - return Write((char*)&val, sizeof(val)); -} - -int Multiplexer::Write(short int val) -{ - val = htons(val); - - return Write((char*)&val, sizeof(val)); -} - -int Multiplexer::Write(unsigned short int val) -{ - val = htons(val); - - return Write((char*)&val, sizeof(val)); -} - -Frame *Multiplexer::getFrame(StreamType type) -{ - // info->info("Get %s Frame", type==TYPE_AUDIO?"Audio\0":"Video\0"); - - read[type] = 0; - - Frame *frame = queue[type]->pop(); - - // If we multicast without audio, we better write the raw video stream. - if(type == TYPE_VIDEO && multicast && multicast->multicast_audio == false) - multicast->Write(frame->data, frame->size); - - return frame; -} - -int Multiplexer::read_stream(char *buf, unsigned int size, StreamType type) -{ - unsigned int copied = 0; - - while( copied < size ) { - - // If we read the entire frame, prepare to get a new one - if(frame[type] && read[type] == frame[type]->size) { - delete frame[type]; - frame[type] = NULL; - } - - // If no frame is in the buffer, get one from the queue - if(frame[type] == NULL) frame[type] = getFrame(type); - - // check for end of stream - if( frame[type]->endOfFrameStream == true) { - info->info("endOfFrameStream in Multiplexer %s-stream.", type==TYPE_VIDEO?"video\0":"audio\0"); - return copied; - } - - // If a frame exists in the buffer copy it to the output buffer - // (No frame ocurres when *running is set to false) - if( frame[type] ) { - unsigned int doread = (size - copied) < (frame[type]->size - read[type]) ? - size - copied : (frame[type]->size - read[type]); - - //info->info("Requested: %d. Read: %d. Doread: %d. In buffer %d", size, (*read), doread, (*frame)->size); - - memcpy(buf + copied, frame[type]->data + read[type], doread); - read[type] += doread; - copied += doread; - } - } - - return copied; -} - -bool Multiplexer::packet(StreamType type) -{ - char buf[PACKET_SIZE]; - - // Write data - // info->info("\t\t[%sPacket]", type==TYPE_AUDIO?"Audio\0":"Video\0"); - - unsigned short int framesize = read_stream(buf, PACKET_SIZE, type); - - Write((void*)ISO11172_1::packet_start_code_prefix, SIZEOF(ISO11172_1::packet_start_code_prefix)); - switch(type) { - case TYPE_VIDEO: - Write((void*)ISO11172_1::stream_id_video1, SIZEOF(ISO11172_1::stream_id_video1)); - break; - case TYPE_AUDIO: - Write((void*)ISO11172_1::stream_id_audio1, SIZEOF(ISO11172_1::stream_id_audio1)); - break; - } - - ISO11172_1::packet_header header; - header.marker_bit1 = header.marker_bit2 = header.marker_bit3 = 1; - header.padding = 0x2; // Must be 2 - header.stuffing_byte = 0xFF; - header.packet_length = framesize + sizeof(ISO11172_1::packet_header) - sizeof(short); - header.system_clock_reference1 = TIMECODE32_30(SCR); - header.system_clock_reference2 = TIMECODE29_15(SCR); - header.system_clock_reference3 = TIMECODE14_0(SCR); - Write(*((unsigned long long int*)&header)); - - Write(buf, framesize); - - if(framesize != PACKET_SIZE) return false; - - written[type] += (double)PACKET_SIZE / (double)frame[type]->size;//bitrate; - - return true; -} - -/** - * Create and write a packet - */ -bool Multiplexer::packet() -{ - //info->info("\t\tWritten[A]: %f, Written[V]: %f", written[TYPE_AUDIO], written[TYPE_VIDEO]); - - StreamType type; - /* - // New switching mechanism - if(written[TYPE_AUDIO] < written[TYPE_VIDEO]) { - type = TYPE_AUDIO; - } else { - type = TYPE_VIDEO; - } - */ - - // Newer switching mechanism - if(queue[TYPE_AUDIO]->size() > queue[TYPE_VIDEO]->size()) { - type = TYPE_AUDIO; - } else { - type = TYPE_VIDEO; - } - - - if(!packet(type)) { - // Flush the other stream too... - if(type == TYPE_AUDIO) type = TYPE_VIDEO; - else type = TYPE_AUDIO; - while(packet(type)); - return false; - } - return true; - - /* - // Count this up here, we want audio packets in packet 4, 9, ... NOT 0, 3, ... - - write_audio_packet++; - if(write_audio_packet % AUDIO_PACKET_FREQUENCY == 0) { - packet(TYPE_AUDIO); - } else { - packet(TYPE_VIDEO); - } - */ -} - -/** - * Create and write the system header - */ -void Multiplexer::system_header() -{ - // info->info("\t\t[System Header]"); - - // system_header_start_code (32 bits) - Write((void*)ISO11172_1::system_header_start_code, SIZEOF(ISO11172_1::system_header_start_code)); - - ISO11172_1::system_header header; - - header.marker_bit1 = header.marker_bit2 = header.marker_bit3 = 1; - - header.header_length = 8 - 2 + (NUM_TYPES * 3); - // (sizeof(header) - sizeof(header.header_length)) + - // NUM_TYPES * sizeof(ISO11172_1::stream_description); - header.rate_bound = 3521; // FIXME: Taken from the example! - header.audio_bound = 1; // Only 1 audio stream - header.fixed_flag = 1; // Fixed bitrate (0 indicates vbr) - header.CSPS_flag = 1; // Standarts compliant? (yes: see lame_set_strict_ISO in liblame_wrapper.cc) - header.system_audio_clock_flag = 1; // FIXME: What excactly is this?? - header.system_video_clock_flag = 1; // FIXME: What excactly is this?? - header.video_bound = 1; // Only 1 video stream - header.reserved_byte = 0xFF; // Must be 0xFF - Write(*((unsigned long long int*)&header)); - - ISO11172_1::stream_description audio_stream_description; - audio_stream_description.stream_id = 0xC0; - audio_stream_description.market_bits = 0x3; - audio_stream_description.STD_buffer_bound_scale = 0; // Must be 0 for audio streams - audio_stream_description.STD_buffer_size_bound = 32; // Buffer must be 32 * 128 bytes - Write(*((unsigned long int*)&audio_stream_description)); - - ISO11172_1::stream_description video_stream_description; - video_stream_description.stream_id = 0xE3; - video_stream_description.market_bits = 0x3; - video_stream_description.STD_buffer_bound_scale = 1; // Must be 1 for video streams - video_stream_description.STD_buffer_size_bound = 46; // Buffer must be 32 * 1024 bytes - Write(*((unsigned long int*)&video_stream_description)); -} - -/** - * Create and write a pack - */ -bool Multiplexer::pack() -{ - // info->info("\t[Pack"); - - Write((void*)ISO11172_1::pack_start_code, SIZEOF(ISO11172_1::pack_start_code)); - - ISO11172_1::pack_header header; - // Set marker bits to 1 - header.marker_bit1 = - header.marker_bit2 = - header.marker_bit3 = - header.marker_bit4 = - header.marker_bit5 = 1; - - header.padding = 0x2; - - unsigned int video_data_rate; - unsigned int audio_data_rate; - - if(frame[TYPE_AUDIO]) audio_data_rate = frame[TYPE_AUDIO]->bitrate; - else audio_data_rate = 112000; - - if(frame[TYPE_VIDEO]) video_data_rate = frame[TYPE_VIDEO]->bitrate; - else video_data_rate = 1100000; - - unsigned int Rmux = ISO11172_1::Rmux(video_data_rate, - audio_data_rate, - 20, // packet_header_size, - 12, // pack_header_size, - PACKETS_PER_PACK, // packets_per_pack, - PACKET_SIZE);// packet_data_size) - - header.mux_rate = Rmux; - //0x1B82; - - SCR = ISO11172_1::SCR(SCR, - 12, //pack_header_size, - PACKETS_PER_PACK, //packets_per_pack, - PACKET_SIZE, //packet_data_size, - Rmux); - - // SCR = 0x40010003LL; - - header.system_clock_reference1 = TIMECODE32_30(SCR); - header.system_clock_reference2 = TIMECODE29_15(SCR); - header.system_clock_reference3 = TIMECODE14_0(SCR); - /* - info->info("timecode All: %lld, 1: %lld, 2: %lld, 3: %lld", - SCR, - (unsigned long long int)header.system_clock_reference1, - (unsigned long long int)header.system_clock_reference2, - (unsigned long long int)header.system_clock_reference3 - ); - */ - Write(*((unsigned long long int*)&header)); - - if(write_system_header % SYSTEM_HEADER_FREQUENCY == 0) system_header(); - // Count this up here, we want a system header in pack 0, 5, ... NOT 4, 9, ... - write_system_header++; - - for(int cnt = 0; cnt < PACKETS_PER_PACK; cnt++) - if(!packet()) return false; - - // info->info("\t]"); - - return true; -} - -/** - * - */ -void Multiplexer::iso11172_stream() -{ - // info->info("[iso11172_stream"); - - while(pack()); - - // info->info("]"); - // info->info("[iso11172_end_code]"); - Write((void*)ISO11172_1::end_code, SIZEOF(ISO11172_1::end_code)); - - /* - info->info("false && false = %d", false && false); - info->info("true && false = %d", true && false); - info->info("true && true = %d", true && true); - */ -} - -//#define BYPASS TYPE_VIDEO -//#define BYPASS TYPE_AUDIO -void Multiplexer::multiplex() -{ -#ifdef BYPASS - - int frmsz; - char buf[1024]; - do { - frmsz = read_stream(buf, sizeof(buf), BYPASS); - info->info("Wrote %d bytes", frmsz); - Write(buf, frmsz); - } while(frmsz == sizeof(buf)); - return; - -#else/*BYPASS*/ - - iso11172_stream(); - -#endif/*BYPASS*/ -} |