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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/*
* RTVideoRec Realtime video recoder and encoder for Linux
*
* Copyright (C) 2004 Bent Bisballe
* Copyright (C) 2004 B. Stultiens
* Copyright (C) 2004 Koen Otter and Glenn van der Meyden
*
* This program 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.
*
* This program 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 this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <config.h>
#ifdef USE_GUI
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <errno.h>
#include <libraw1394/raw1394.h>
#include "decoder.h"
#include "debug.h"
Decoder::Decoder(Error* err,
sem_t *gencode_sem,
sem_t *gplayer_sem,
Queue<DVFrame> *gencode_queue,
Queue<FFFrame> *gplayer_queue,
pthread_mutex_t *gmutex,
volatile int *grunning)
{
errobj = err;
encode_sem = gencode_sem;
player_sem = gplayer_sem;
encode_queue = gencode_queue;
player_queue = gplayer_queue;
mutex = gmutex;
running = grunning;
AVCodec *dec_codec;
// Find ffmpeg-dv-codec
if(!(dec_codec = avcodec_find_decoder(CODEC_ID_DVVIDEO))) {
errobj->pushError("Unable to find codec.");
return;
}
// Initialize ffmpeg-dv-codec
if(avcodec_open(&dvcodec, dec_codec) < 0) {
errobj->pushError("Error while opening codec for input stream.");
return;
}
}
Decoder::~Decoder()
{
avcodec_close(&dvcodec);
}
static int raw_reader( raw1394handle_t handle, int channel, size_t length, quadlet_t *data )
{
static char *framedata = NULL;
// Only process packets with reasonable length.
if ( length > 16 )
{
unsigned char * p = ( unsigned char* ) & data[ 3 ];
int section_type = p[ 0 ] >> 5; // section type is in bits 5 - 7
int dif_sequence = p[ 1 ] >> 4; // dif sequence number is in bits 4 - 7
int dif_block = p[ 2 ];
if ( section_type == 0 && dif_sequence == 0 )
{
if ( framedata != NULL )
{
raw1394_set_userdata(handle, (void *)framedata);
framedata = NULL;
}
}
if(!framedata)
{
framedata = (char *)malloc(DVPACKAGE_SIZE); // dvframe.h
if(!framedata)
{
// We're fucked
exit(1);
}
}
switch ( section_type )
{
case 0: // 1 Header block
// p[3] |= 0x80; // hack to force PAL data
memcpy( framedata + dif_sequence * 150 * 80, p, 480 );
break;
case 1: // 2 Subcode blocks
memcpy( framedata + dif_sequence * 150 * 80 + ( 1 + dif_block ) * 80, p, 480 );
break;
case 2: // 3 VAUX blocks
memcpy( framedata + dif_sequence * 150 * 80 + ( 3 + dif_block ) * 80, p, 480 );
break;
case 3: // 9 Audio blocks interleaved with video
memcpy( framedata + dif_sequence * 150 * 80 + ( 6 + dif_block * 16 ) * 80, p, 480 );
break;
case 4: // 135 Video blocks interleaved with audio
memcpy( framedata + dif_sequence * 150 * 80 + ( 7 + ( dif_block / 15 ) + dif_block ) * 80, p, 480 );
break;
default: // we can´t handle any other data
break;
}
}
return 0;
}
void Decoder::decode()
{
// FIXME: Read port and channel data from config.
int port = 0;
int channel = 63;
int n_ports;
struct raw1394_portinfo pinf[ 16 ];
raw1394handle_t handle;
// Get handle to firewire channels
handle = raw1394_new_handle();
if(!handle) {
fprintf( stderr, "raw1394 - failed to get handle: %s.\n", strerror( errno ) );
exit( EXIT_FAILURE );
}
// how many adapters are hook in?
if((n_ports = raw1394_get_port_info(handle, pinf, 16)) < 0 ) {
fprintf( stderr, "raw1394 - failed to get port info: %s.\n", strerror( errno ) );
raw1394_destroy_handle( handle );
exit( EXIT_FAILURE );
}
// Tell raw1394 which host adapter to use
if(raw1394_set_port(handle, port) < 0 ) {
errobj->pushError("Error while opening codec for input stream.");
fprintf( stderr, "raw1394 - failed to set set port: %s.\n", strerror( errno ) );
exit( EXIT_FAILURE );
}
raw1394_set_iso_handler( handle, channel, raw_reader); // 63 is default channel... sucks.
raw1394_set_userdata( handle, ( void* ) NULL);
raw1394_start_iso_rcv( handle, channel);
while(*running) {
AVPacket pkt;
uint8_t *ptr;
int len;
SDL_Event user_event;
while(1) {
raw1394_loop_iterate(handle);
pkt.data = (uint8_t *)raw1394_get_userdata(handle);
if(pkt.data) {
raw1394_set_userdata(handle, NULL);
break;
}
}
printf("1"); fflush(stdout);
len = pkt.size = DVPACKAGE_SIZE;
ptr = pkt.data;
pkt.stream_index = 0;
// NOTE: we only decode video, we only need the data from stream_index 0
// (stream 0: video, stream 1: audio)
// while(pkt.stream_index == 0 && len > 0) {
int ret;
int got_picture;
// buf_t *buf = buf_alloc();
FFFrame *fff = new FFFrame(); ALLOC(fff, "FFFrame in decode");
memset(fff->frame, 0 , sizeof(AVFrame));
//DVFrame *dvf = new DVFrame(); ALLOC(dvf, "DVFrame in decode");
// dvf->type = DVF_VIDEO;
// memcpy(dvf->frame, ptr, len);
printf("2"); fflush(stdout);
ret = avcodec_decode_video(&dvcodec, fff->frame, &got_picture, ptr, len);
printf("3"); fflush(stdout);
if(ret < 0) {
errobj->pushError("Error while decoding stream.");
return;
}
printf("4"); fflush(stdout);
pthread_mutex_lock(mutex);
// encode_queue->push(dvf);
player_queue->push(fff);
pthread_mutex_unlock(mutex);
printf("5"); fflush(stdout);
sem_post(encode_sem);
user_event.type = SDL_USEREVENT;
user_event.user.code = 0;
user_event.user.data1 = NULL;
user_event.user.data2 = NULL;
printf("6"); fflush(stdout);
SDL_PushEvent(&user_event);
printf("7"); fflush(stdout);
free(ptr);
printf("8"); fflush(stdout);
}
printf("9"); fflush(stdout);
/* Kick the others so they wake up with empty queues */
sem_post(encode_sem);
pthread_exit(NULL);
}
void Decoder::run() {
decode();
}
#endif /*USE_GUI*/
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