diff options
Diffstat (limited to 'libmpdemux/demux_lmlm4.c')
| -rw-r--r-- | libmpdemux/demux_lmlm4.c | 385 |
1 files changed, 0 insertions, 385 deletions
diff --git a/libmpdemux/demux_lmlm4.c b/libmpdemux/demux_lmlm4.c deleted file mode 100644 index 739343cdb4..0000000000 --- a/libmpdemux/demux_lmlm4.c +++ /dev/null @@ -1,385 +0,0 @@ -/* - * LMLM4 MPEG4 Compression Card stream & file parser - * Copyright (C) 2003 Maxim Yevtyushkin <max@linuxmedialabs.com> - * based on SMJPEG file parser by Alex Beregszaszi - * - * 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 <stdio.h> -#include <stdlib.h> -#include <unistd.h> -#include <string.h> /* strtok */ - -#include "config.h" -#include "mp_msg.h" - -#include "stream/stream.h" -#include "demuxer.h" -#include "stheader.h" - -typedef struct FrameInfo -{ - ssize_t frameSize; - ssize_t paddingSize; - int frameType; - int channelNo; -} FrameInfo; - -#define FRAMETYPE_I 0 -#define FRAMETYPE_P 1 -#define FRAMETYPE_B 2 -#define FRAMETYPE_AUDIO_MPEG1L2 4 -#define FRAMETYPE_AUDIO_ULAW 5 -#define FRAMETYPE_AUDIO_ADPCM 6 - -#define PACKET_BLOCK_SIZE 0x00000200 -#define PACKET_BLOCK_LAST 0x000001FF -#define PACKET_BLOCK_MASK 0xFFFFFE00 - -#define MAX_PACKET_SIZE 1048576 // 1 Mb - -#define STREAM_START_CODE_SIZE 4 - -/* -// codes in MSB first -static unsigned int start_code [] = -{ - 0xB0010000, // VISUAL_OBJECT_SEQUENCE_START_CODE - 0xB6010000, // VOP_START_CODE - 0x04C4FDFF, // MPEG1LAYERII_START_CODE - 0x00000000 // end of start codes list -}; -*/ - -static int imeHeaderValid(FrameInfo *frame) -{ - if ( frame->channelNo > 7 || - frame->frameSize > MAX_PACKET_SIZE || frame->frameSize <= 0) - { - mp_msg(MSGT_DEMUX, MSGL_V, - "Invalid packet in LMLM4 stream: ch=%d size=%zd\n", - frame->channelNo, frame->frameSize); - return 0; - } - switch (frame->frameType) { - case FRAMETYPE_I: - case FRAMETYPE_P: - case FRAMETYPE_B: - case FRAMETYPE_AUDIO_MPEG1L2: - case FRAMETYPE_AUDIO_ULAW: - case FRAMETYPE_AUDIO_ADPCM: - break; - default: - mp_msg(MSGT_DEMUX, MSGL_V, "Invalid packet in LMLM4 stream (wrong packet type %d)\n", frame->frameType); - return 0; - } - return 1; -} - -/* -int searchMPEG4Stream(demuxer_t* demuxer, IME6400Header *imeHeader) -{ - void *data; - ssize_t imeHeaderSize = sizeof(IME6400Header); - ssize_t dataSize = sizeof(IME6400Header) * 3; - ssize_t ptr = imeHeaderSize * 2; - int errNo, startCodeNo; - off_t pos; - - data = malloc(dataSize); - - imeHeaderSwap(imeHeader); - memcpy(data + imeHeaderSize, imeHeader, imeHeaderSize); - -// printHex(data + imeHeaderSize, imeHeaderSize); - - while ((errNo = stream_read(demuxer->stream, data + imeHeaderSize * 2 , imeHeaderSize)) == imeHeaderSize) - { -// printHex(data + imeHeaderSize * 2, imeHeaderSize); - - pos = stream_tell(demuxer->stream); - while (dataSize - ptr >= STREAM_START_CODE_SIZE) { - startCodeNo = 0; - while (start_code[startCodeNo]) - { - if (memcmp(&start_code[startCodeNo], data + ptr, STREAM_START_CODE_SIZE) == 0) // start code match - { - memcpy(imeHeader, data + ptr - imeHeaderSize, imeHeaderSize); - imeHeaderSwap(imeHeader); - if (imeHeaderValid(imeHeader)) - { - stream_seek(demuxer->stream, pos - (dataSize - ptr)); - free(data); - return 0; - } - } - startCodeNo++; - } - ptr++; - } - memcpy(data,data + imeHeaderSize, imeHeaderSize * 2); - ptr -= imeHeaderSize; - } - - free(data); - return errNo; -} -*/ - -static int getFrame(demuxer_t *demuxer, FrameInfo *frameInfo) -{ - unsigned int packetSize; - - frameInfo->channelNo = stream_read_word(demuxer->stream); - frameInfo->frameType = stream_read_word(demuxer->stream); - packetSize=stream_read_dword(demuxer->stream); - - if(stream_eof(demuxer->stream)){ - frameInfo->frameSize = 0; - return 0; - } - - frameInfo->frameSize = packetSize - 8; //sizeof(IME6400Header); - frameInfo->paddingSize = (packetSize & PACKET_BLOCK_LAST) ? PACKET_BLOCK_SIZE - (packetSize & PACKET_BLOCK_LAST) : 0; - - mp_msg(MSGT_DEMUX, MSGL_DBG2, "typ: %d chan: %d size: %zd pad: %zd\n", - frameInfo->frameType, - frameInfo->channelNo, - frameInfo->frameSize, - frameInfo->paddingSize); - - if(!imeHeaderValid(frameInfo)){ - // skip this packet - stream_skip(demuxer->stream,PACKET_BLOCK_SIZE-8); - frameInfo->frameSize = 0; - return -1; - } - - return 1; -} - -static int lmlm4_check_file(demuxer_t* demuxer) -{ - FrameInfo frameInfo; - unsigned int first; - - mp_msg(MSGT_DEMUX, MSGL_V, "Checking for LMLM4 Stream Format\n"); - - if(getFrame(demuxer, &frameInfo)!=1){ - mp_msg(MSGT_DEMUX, MSGL_V, "LMLM4 Stream Format not found\n"); - return 0; - } - first=stream_read_dword(demuxer->stream); - stream_skip(demuxer->stream,-12); - - mp_msg(MSGT_DEMUXER,MSGL_V,"LMLM4: first=0x%08X\n",first); - - switch(frameInfo.frameType){ - case FRAMETYPE_AUDIO_MPEG1L2: - if( (first & 0xffe00000) != 0xffe00000 ){ - mp_msg(MSGT_DEMUXER,MSGL_V,"LMLM4: not mpeg audio\n"); - return 0; - } - if((4-((first>>17)&3))!=2){ - mp_msg(MSGT_DEMUXER,MSGL_V,"LMLM4: not layer-2\n"); - return 0; - } - if(((first>>10)&0x3)==3){ - mp_msg(MSGT_DEMUXER,MSGL_V,"LMLM4: invalid audio sampelrate\n"); - return 0; - } - mp_msg(MSGT_DEMUXER,MSGL_V,"LMLM4: first packet is audio, header checks OK!\n"); - break; - // TODO: add checks for video header too, for case of disabled audio - } - - -// stream_reset(demuxer->stream); - mp_msg(MSGT_DEMUX, MSGL_V, "LMLM4 Stream Format found\n"); - - return DEMUXER_TYPE_LMLM4; -} - -static int video = 0; -static int frames= 0; - -// return value: -// 0 = EOF or no stream found -// 1 = successfully read a packet -static int demux_lmlm4_fill_buffer(demuxer_t *demux, demux_stream_t *ds) -{ - FrameInfo frameInfo; - double pts; - int id=1; - int ret; - -//hdr: - demux->filepos = stream_tell(demux->stream); - mp_msg(MSGT_DEMUX, MSGL_DBG2, "fpos = %"PRId64"\n", (int64_t)demux->filepos); - - ret=getFrame(demux, &frameInfo); - if(ret<=0) return ret; // EOF/error - - pts=demux->video->sh ? frames*((sh_video_t*)(demux->video->sh))->frametime : 0; - - switch(frameInfo.frameType){ - case FRAMETYPE_AUDIO_MPEG1L2: - mp_dbg(MSGT_DEMUX, MSGL_DBG2, "Audio Packet\n"); - if (!video) - { - stream_skip(demux->stream, frameInfo.frameSize + frameInfo.paddingSize); - mp_msg(MSGT_DEMUX, MSGL_V, "Skip Audio Packet\n"); - return -1; //goto hdr; - } - if(demux->audio->id==-1){ - if(!demux->a_streams[id]) new_sh_audio(demux,id); - demux->audio->id=id; - demux->audio->sh=demux->a_streams[id]; - ((sh_audio_t*)(demux->audio->sh))->format=0x50; // mpeg audio layer 1/2 - } - if(demux->audio->id==id) - ds_read_packet(demux->audio, demux->stream, frameInfo.frameSize, - pts, demux->filepos, 0); - else - stream_skip(demux->stream,frameInfo.frameSize); - break; - case FRAMETYPE_I: - if (!video) { - video = 1; - mp_dbg(MSGT_DEMUX, MSGL_DBG2, "First Video Packet\n"); - } - case FRAMETYPE_P: - frames=(frames+1)&(1024*1024-1); // wrap around at 4 hrs to avoid inaccurate float calculations - if (!video) - { - stream_skip(demux->stream, frameInfo.frameSize + frameInfo.paddingSize); - mp_msg(MSGT_DEMUX, MSGL_V, "Skip Video P Packet\n"); - return -1; //goto hdr; - } - mp_dbg(MSGT_DEMUX, MSGL_DBG2, "Video Packet\n"); - if(demux->video->id==-1){ - if(!demux->v_streams[id]) new_sh_video(demux,id); - demux->video->id=id; - demux->video->sh=demux->v_streams[id]; - ((sh_video_t*)(demux->video->sh))->format=0x10000004; // mpeg4-ES - } - if(demux->video->id==id) - ds_read_packet(demux->video, demux->stream, frameInfo.frameSize, - pts, demux->filepos, 0); - break; - default: - stream_skip(demux->stream,frameInfo.frameSize); - } - - stream_skip(demux->stream, frameInfo.paddingSize); - - return 1; -} - -static demuxer_t* demux_open_lmlm4(demuxer_t* demuxer){ - sh_audio_t *sh_audio=NULL; - sh_video_t *sh_video=NULL; - -#if 0 - sh_video_t* sh_video; - sh_audio_t* sh_audio; - unsigned int htype = 0, hleng; - int i = 0; - - sh_video = new_sh_video(demuxer, 0); - demuxer->video->sh = sh_video; - sh_video->ds = demuxer->video; - sh_video->disp_w = 640; - sh_video->disp_h = 480; - sh_video->format = mmioFOURCC('D','I','V','X'); - - sh_video->bih = calloc(1, sizeof(*sh_video->bih)); - - /* these are false values */ - sh_video->bih->biSize = 40; - sh_video->bih->biWidth = sh_video->disp_w; - sh_video->bih->biHeight = sh_video->disp_h; - sh_video->bih->biPlanes = 3; - sh_video->bih->biBitCount = 16; - sh_video->bih->biCompression = sh_video->format; - sh_video->bih->biSizeImage = sh_video->disp_w*sh_video->disp_h; - - sh_audio = new_sh_audio(demuxer, 0); - demuxer->audio->sh = sh_audio; - sh_audio->ds = demuxer->audio; - - sh_audio->wf = calloc(1, sizeof(*sh_audio->wf)); - - sh_audio->samplerate = 48000; - sh_audio->wf->wBitsPerSample = 16; - sh_audio->channels = 2; - sh_audio->format = 0x50; - sh_audio->wf->wFormatTag = sh_audio->format; - sh_audio->wf->nChannels = sh_audio->channels; - sh_audio->wf->nSamplesPerSec = sh_audio->samplerate; - sh_audio->wf->nAvgBytesPerSec = sh_audio->wf->nChannels* - sh_audio->wf->wBitsPerSample*sh_audio->wf->nSamplesPerSec/8; - sh_audio->wf->nBlockAlign = sh_audio->channels *2; - sh_audio->wf->cbSize = 0; - -#endif - - demuxer->seekable = 0; - - if(!ds_fill_buffer(demuxer->video)){ - mp_msg(MSGT_DEMUXER, MSGL_INFO, "LMLM4: %s", - mp_gtext("No video stream found.\n")); - demuxer->video->sh=NULL; - } else { - sh_video=demuxer->video->sh;sh_video->ds=demuxer->video; - } - if(demuxer->audio->id!=-2) { - if(!ds_fill_buffer(demuxer->audio)){ - mp_msg(MSGT_DEMUXER, MSGL_INFO, "LMLM4: %s", - mp_gtext("No audio stream found -> no sound.\n")); - demuxer->audio->sh=NULL; - } else { - sh_audio=demuxer->audio->sh;sh_audio->ds=demuxer->audio; - } - } - - return demuxer; -} - -static void demux_close_lmlm4(demuxer_t *demuxer) -{ -// printf("Close LMLM4 Stream\n"); - return; -} - - -const demuxer_desc_t demuxer_desc_lmlm4 = { - "LMLM4 MPEG4 Compression Card stream demuxer", - "lmlm4", - "RAW LMLM4", - "Maxim Yevtyushkin", - "", - DEMUXER_TYPE_LMLM4, - 0, // unsafe autodetect - lmlm4_check_file, - demux_lmlm4_fill_buffer, - demux_open_lmlm4, - demux_close_lmlm4, - NULL, - NULL -}; |