+++ /dev/null
-
-/*
- * CINELERRA
- * Copyright (C) 2008 Adam Williams <broadcast at earthling dot net>
- *
- * 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 "condition.h"
-#include "iec61883input.h"
-#include "language.h"
-#include "mutex.h"
-#include "vframe.h"
-
-#include <errno.h>
-#include <fcntl.h>
-#include <sys/ioctl.h>
-#include <sys/mman.h>
-#include <stdio.h>
-#include <string.h>
-#include <unistd.h>
-
-#define INPUT_SAMPLES 131072
-#define BUFFER_TIMEOUT 500000
-
-
-IEC61883Input::IEC61883Input()
- : Thread(1, 1, 0)
-{
- frame = 0;
- handle = 0;
- fd = 0;
- buffer = 0;
- buffer_valid = 0;
- input_buffer = 0;
- done = 0;
- total_buffers = 0;
- current_inbuffer = 0;
- current_outbuffer = 0;
- buffer_size = 0;
- audio_buffer = 0;
- audio_samples = 0;
- video_lock = 0;
- audio_lock = 0;
- buffer_lock = 0;
- decoder = 0;
-}
-
-IEC61883Input::~IEC61883Input()
-{
-// Driver crashes if it isn't stopped before cancelling the thread.
-// May still crash during the cancel though.
-
- if(Thread::running())
- {
- done = 1;
- Thread::join();
- }
-
- if(buffer)
- {
- for(int i = 0; i < total_buffers; i++)
- delete [] buffer[i];
- delete [] buffer;
- delete [] buffer_valid;
- }
-
- if(input_buffer)
- munmap(input_buffer, total_buffers * buffer_size);
-
- if(audio_buffer)
- {
- delete [] audio_buffer;
- }
-
- if(decoder)
- {
- dv_delete(decoder);
- }
-
- if(video_lock) delete video_lock;
- if(audio_lock) delete audio_lock;
- if(buffer_lock) delete buffer_lock;
- if(frame) iec61883_dv_fb_close(frame);
- if(handle) raw1394_destroy_handle(handle);
-}
-
-static int write_frame_static(unsigned char *data, int len, int complete, void *ptr)
-{
- IEC61883Input *input = (IEC61883Input*)ptr;
- return input->write_frame(data, len, complete);
-}
-
-
-
-int IEC61883Input::open(int port,
- int channel,
- int length,
- int channels,
- int samplerate,
- int bits,
- int w,
- int h)
-{
- this->port = port;
- this->channel = channel;
- this->length = length;
- this->channels = channels;
- this->samplerate = samplerate;
- this->bits = bits;
- this->w = w;
- this->h = h;
- is_pal = (h == 576);
- buffer_size = is_pal ? DV_PAL_SIZE : DV_NTSC_SIZE;
- total_buffers = length;
-
-
-// Initialize grabbing
- if(!handle)
- {
- handle = raw1394_new_handle_on_port(port);
- if(handle)
- {
- frame = iec61883_dv_fb_init(handle, write_frame_static, (void *)this);
- if(frame)
- {
- if(!iec61883_dv_fb_start(frame, channel))
- {
- fd = raw1394_get_fd(handle);
- }
- }
- }
-
- buffer = new char*[total_buffers];
- buffer_valid = new int[total_buffers];
- bzero(buffer_valid, sizeof(int) * total_buffers);
- for(int i = 0; i < total_buffers; i++)
- {
- buffer[i] = new char[DV_PAL_SIZE];
- }
-
-
- audio_buffer = new char[INPUT_SAMPLES * 2 * channels];
-
- audio_lock = new Condition(0, "IEC61883Input::audio_lock");
- video_lock = new Condition(0, "IEC61883Input::video_lock");
- buffer_lock = new Mutex("IEC61883Input::buffer_lock");
-
- decoder = dv_new();
-
- Thread::start();
- }
-
- if(!handle || !frame || !fd) return 1;
-
- return 0;
-}
-
-
-void IEC61883Input::run()
-{
- while(!done && handle)
- {
- struct timeval tv;
- fd_set rfds;
- FD_ZERO(&rfds);
- FD_SET(fd, &rfds);
- tv.tv_sec = 0;
- tv.tv_usec = 20000;
- if(select(fd + 1, &rfds, 0, 0, &tv) > 0)
- {
- raw1394_loop_iterate(handle);
- }
- }
-
-}
-
-
-
-
-
-
-
-
-int IEC61883Input::write_frame(unsigned char *data, int len, int complete)
-{
- if(!complete) printf(_("write_frame: incomplete frame received.\n"));
-
- buffer_lock->lock("IEC61883Input write_frame 1");
-
-// Get a buffer to transfer to
- char *dst = 0;
- int is_overflow = 0;
- if(!buffer_valid[current_inbuffer])
- dst = buffer[current_inbuffer];
- else
- is_overflow = 1;
-
- char *src = (char*)(data);
-// static FILE *test = 0;
-// if(!test) test = fopen("/tmp/test", "w");
-// fwrite(src, buffer_size, 1, test);
-
-// Export the video
- if(dst)
- {
- memcpy(dst, src, len);
- buffer_valid[current_inbuffer] = 1;
- video_lock->unlock();
- }
-
-
-// Extract the audio
- if(audio_samples < INPUT_SAMPLES - 2048)
- {
- int audio_result = dv_read_audio(decoder,
- (unsigned char*)audio_buffer +
- audio_samples * 2 * 2,
- (unsigned char*)src,
- len,
- channels,
- bits);
- int real_freq = decoder->decoder->audio->frequency;
- if (real_freq == 32000)
- {
-// do in-place _FAST_ && _SIMPLE_ upsampling to 48khz
-// i also think user should get a warning that his material is effectively 32khz
-// we take 16bit samples for both channels in one 32bit int
- int *twosample = (int*) (audio_buffer + audio_samples * 2 * 2);
- int from = audio_result - 1;
- int new_result = audio_result * 48000 / real_freq;
- for (int to = new_result - 1; to >=0; to--)
- {
- if ((to % 3) == 0 || (to % 3) == 1) from --;
- twosample[to] = twosample[from];
- }
- audio_result = new_result;
- }
-
-
- audio_samples += audio_result;
-
-// Export the audio
- audio_lock->unlock();
- }
-
-// Advance buffer
- if(!is_overflow)
- increment_counter(¤t_inbuffer);
-
-
- buffer_lock->unlock();
- return 0;
-}
-
-
-
-
-
-
-
-void IEC61883Input::increment_counter(int *counter)
-{
- (*counter)++;
- if(*counter >= total_buffers) *counter = 0;
-}
-
-void IEC61883Input::decrement_counter(int *counter)
-{
- (*counter)--;
- if(*counter < 0) *counter = total_buffers - 1;
-}
-
-
-
-int IEC61883Input::read_video(VFrame *data)
-{
- int result = 0;
-
-// Take over buffer table
- buffer_lock->lock("IEC61883Input::read_video 1");
-// Wait for buffer with timeout
- while(!buffer_valid[current_outbuffer] && !result)
- {
- buffer_lock->unlock();
- result = video_lock->timed_lock(BUFFER_TIMEOUT, "IEC61883Input::read_video 2");
- buffer_lock->lock("IEC61883Input::read_video 3");
- }
-
-// Copy frame
- if(buffer_valid[current_outbuffer])
- {
- data->allocate_compressed_data(buffer_size);
- data->set_compressed_size(buffer_size);
- memcpy(data->get_data(), buffer[current_outbuffer], buffer_size);
- buffer_valid[current_outbuffer] = 0;
- increment_counter(¤t_outbuffer);
- }
-
- buffer_lock->unlock();
- return result;
-}
-
-
-
-
-int IEC61883Input::read_audio(char *data, int samples)
-{
- int result = 0;
- int timeout = (int64_t)samples * (int64_t)1000000 * (int64_t)2 / (int64_t)samplerate;
- if(timeout < 500000) timeout = 500000;
-
-// Take over buffer table
- buffer_lock->lock("IEC61883Input::read_audio 1");
-// Wait for buffer with timeout
- while(audio_samples < samples && !result)
- {
- buffer_lock->unlock();
- result = audio_lock->timed_lock(timeout, "IEC61883Input::read_audio 2");
- buffer_lock->lock("IEC61883Input::read_audio 3");
- }
-
- if(audio_samples >= samples)
- {
- memcpy(data, audio_buffer, samples * bits * channels / 8);
- memcpy(audio_buffer,
- audio_buffer + samples * bits * channels / 8,
- (audio_samples - samples) * bits * channels / 8);
- audio_samples -= samples;
- }
-
- buffer_lock->unlock();
- return result;
-}
-
-
-
-
-
projects / goodguy / history.git / blobdiff