mirror of https://github.com/mpv-player/mpv
173 lines
4.6 KiB
C
173 lines
4.6 KiB
C
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/*
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* NuppelVideo 0.05 file parser
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* for MPlayer
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* by Panagiotis Issaris <takis@lumumba.luc.ac.be>
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*
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* Reworked by alex
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include "config.h"
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#include "mp_msg.h"
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#include "help_mp.h"
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#include "stream.h"
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#include "demuxer.h"
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#include "stheader.h"
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#include "nuppelvideo.h"
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//#include "RTjpegN.h"
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//#include "minilzo.h"
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struct nuv_signature
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{
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char finfo[12]; /* "NuppelVideo" + \0 */
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char version[5]; /* "0.05" + \0 */
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};
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void demux_seek_nuv ( demuxer_t *demuxer, float rel_seek_secs, int flags )
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{
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}
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int demux_nuv_fill_buffer ( demuxer_t *demuxer )
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{
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struct rtframeheader rtjpeg_frameheader;
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int orig_pos;
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orig_pos = stream_tell ( demuxer->stream );
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if (stream_read ( demuxer->stream, (char*)& rtjpeg_frameheader, sizeof ( rtjpeg_frameheader ) ) < sizeof(rtjpeg_frameheader))
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return 0; /* EOF */
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#if 0
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printf("NUV frame read: %c packetlength: %d orig: %d new: %d\n", rtjpeg_frameheader.frametype,rtjpeg_frameheader.packetlength, orig_pos, orig_pos+rtjpeg_frameheader.packetlength);
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#endif
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/* Skip Seekpoint, Text and Sync for now */
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if ((rtjpeg_frameheader.frametype == 'R') ||
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(rtjpeg_frameheader.frametype == 'T') ||
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(rtjpeg_frameheader.frametype == 'S'))
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return 1;
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if (((rtjpeg_frameheader.frametype == 'D') &&
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(rtjpeg_frameheader.comptype == 'R')) ||
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(rtjpeg_frameheader.frametype == 'V'))
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{
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/* put RTjpeg tables, Video info to video buffer */
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stream_seek ( demuxer->stream, orig_pos );
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ds_read_packet ( demuxer->video, demuxer->stream, rtjpeg_frameheader.packetlength + 12,
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rtjpeg_frameheader.timecode / 1000, orig_pos, 0 );
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}
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/* copy PCM only */
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if (demuxer->audio && (rtjpeg_frameheader.frametype == 'A') &&
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(rtjpeg_frameheader.comptype == '0'))
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{
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/* put Audio to audio buffer */
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stream_seek ( demuxer->stream, orig_pos );
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ds_read_packet ( demuxer->audio, demuxer->stream, rtjpeg_frameheader.packetlength + 12,
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rtjpeg_frameheader.timecode / 1000, orig_pos, 0 );
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}
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return 1;
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}
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demuxer_t* demux_open_nuv ( demuxer_t* demuxer )
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{
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sh_video_t *sh_video = NULL;
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sh_audio_t *sh_audio = NULL;
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struct rtfileheader rtjpeg_fileheader;
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struct rtframeheader rtjpeg_frameheader;
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unsigned long int tbls[128];
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int bytes_read;
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/* Go to the start */
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stream_reset(demuxer->stream);
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stream_seek(demuxer->stream, 0);
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stream_read ( demuxer->stream, (char*)& rtjpeg_fileheader, sizeof(rtjpeg_fileheader) );
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/* no video */
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if (rtjpeg_fileheader.videoblocks == 0)
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{
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printf("No video blocks in file\n");
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return NULL;
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}
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/* Create a new video stream header */
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sh_video = new_sh_video ( demuxer, 0 );
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/* Make sure the demuxer knows about the new video stream header
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* (even though new_sh_video() ought to take care of it)
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*/
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demuxer->video->sh = sh_video;
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/* Make sure that the video demuxer stream header knows about its
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* parent video demuxer stream (this is getting wacky), or else
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* video_read_properties() will choke
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*/
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sh_video->ds = demuxer->video;
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/* Custom fourcc for internal MPlayer use */
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sh_video->format = mmioFOURCC('N', 'U', 'V', '1');
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sh_video->disp_w = rtjpeg_fileheader.width;
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sh_video->disp_h = rtjpeg_fileheader.height;
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sh_video->aspect = rtjpeg_fileheader.aspect;
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/* Get the FPS */
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sh_video->fps = rtjpeg_fileheader.fps;
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sh_video->frametime = 1 / sh_video->fps;
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#if 0
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if (rtjpeg_fileheader.audioblocks != 0)
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{
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sh_audio = new_sh_audio(demuxer, 0);
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demuxer->audio->sh = sh_audio;
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sh_audio->ds = demuxer->audio;
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sh_audio->format = 0x1;
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sh_audio->channels = 2;
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sh_audio->samplerate = 44100;
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sh_audio->wf = malloc(sizeof(WAVEFORMATEX));
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memset(sh_audio->wf, 0, sizeof(WAVEFORMATEX));
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sh_audio->wf->wFormatTag = sh_audio->format;
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sh_audio->wf->nChannels = sh_audio->channels;
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sh_audio->wf->wBitsPerSample = 16;
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sh_audio->wf->nSamplesPerSec = sh_audio->samplerate;
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sh_audio->wf->nAvgBytesPerSec = sh_audio->wf->nChannels*
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sh_audio->wf->wBitsPerSample*sh_audio->wf->nSamplesPerSec/8;
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sh_audio->wf->nBlockAlign = sh_audio->channels * 2;
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sh_audio->wf->cbSize = 0;
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}
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#endif
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return demuxer;
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}
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int nuv_check_file ( demuxer_t* demuxer )
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{
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struct nuv_signature ns;
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/* Store original position */
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int orig_pos = stream_tell(demuxer->stream);
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mp_msg ( MSGT_DEMUX, MSGL_V, "Checking for NuppelVideo\n" );
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stream_read(demuxer->stream,(char*)&ns,sizeof(ns));
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if ( strncmp ( ns.finfo, "NuppelVideo", 12 ) )
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return 0; /* Not a NuppelVideo file */
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if ( strncmp ( ns.version, "0.05", 5 ) )
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return 0; /* Wrong version NuppelVideo file */
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/* Return to original position */
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stream_seek ( demuxer->stream, orig_pos );
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return 1;
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}
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