cinelerra-5.1/cinelerra/filebase.C

   1
   2 /*
   3  * CINELERRA
   4  * Copyright (C) 2008 Adam Williams <broadcast at earthling dot net>
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, write to the Free Software
  18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19  *
  20  */
  21
  22 #include "asset.h"
  23 #include "assets.h"
  24 #include "byteorder.h"
  25 #include "bccmodels.h"
  26 #include "file.h"
  27 #include "filebase.h"
  28 #include "overlayframe.h"
  29 #include "sizes.h"
  30
  31 #include <stdlib.h>
  32 #include <string.h>
  33
  34 FileBase::FileBase(Asset *asset, File *file)
  35 {
  36         this->file = file;
  37         this->asset = asset;
  38         internal_byte_order = get_byte_order();
  39         reset_parameters();
  40         overlayer = new OverlayFrame;
  41 }
  42
  43 FileBase::~FileBase()
  44 {
  45         close_file();
  46         if(row_pointers_in) delete [] row_pointers_in;
  47         if(row_pointers_out) delete [] row_pointers_out;
  48         if(float_buffer) delete [] float_buffer;
  49         delete overlayer;
  50 }
  51
  52 int FileBase::close_file()
  53 {
  54         if(row_pointers_in) delete [] row_pointers_in;
  55         if(row_pointers_out) delete [] row_pointers_out;
  56         if(float_buffer) delete [] float_buffer;
  57
  58
  59         if(pcm_history)
  60         {
  61                 for(int i = 0; i < history_channels; i++)
  62                         delete [] pcm_history[i];
  63                 delete [] pcm_history;
  64         }
  65
  66
  67         close_file_derived();
  68         reset_parameters();
  69         return 0;
  70 }
  71
  72 void FileBase::update_pcm_history(int64_t len)
  73 {
  74         decode_start = 0;
  75         decode_len = 0;
  76
  77         if(!pcm_history)
  78         {
  79                 history_channels = asset->channels;
  80                 pcm_history = new double*[history_channels];
  81                 for(int i = 0; i < history_channels; i++)
  82                         pcm_history[i] = new double[HISTORY_MAX];
  83                 history_start = 0;
  84                 history_size = 0;
  85                 history_allocated = HISTORY_MAX;
  86         }
  87
  88
  89 //printf("FileBase::update_pcm_history current_sample=%jd history_start=%jd history_size=%jd\n",
  90 //file->current_sample,
  91 //history_start,
  92 //history_size);
  93 // Restart history.  Don't bother shifting history back.
  94         if(file->current_sample < history_start ||
  95                 file->current_sample > history_start + history_size)
  96         {
  97                 history_size = 0;
  98                 history_start = file->current_sample;
  99                 decode_start = file->current_sample;
 100                 decode_len = len;
 101         }
 102         else
 103 // Shift history forward to make room for new samples
 104         if(file->current_sample > history_start + HISTORY_MAX)
 105         {
 106                 int diff = file->current_sample - (history_start + HISTORY_MAX);
 107                 for(int i = 0; i < asset->channels; i++)
 108                 {
 109                         double *temp = pcm_history[i];
 110                         memcpy(temp, temp + diff, (history_size - diff) * sizeof(double));
 111                 }
 112
 113                 history_start += diff;
 114                 history_size -= diff;
 115
 116 // Decode more data
 117                 decode_start = history_start + history_size;
 118                 decode_len = file->current_sample + len - (history_start + history_size);
 119         }
 120         else
 121 // Starting somewhere in the buffer
 122         {
 123                 decode_start = history_start + history_size;
 124                 decode_len = file->current_sample + len - (history_start + history_size);
 125         }
 126 }
 127
 128 void FileBase::append_history(float **new_data, int len)
 129 {
 130         allocate_history(len);
 131
 132         for(int i = 0; i < history_channels; i++)
 133         {
 134                 double *output = pcm_history[i] + history_size;
 135                 float *input = new_data[i];
 136                 for(int j = 0; j < len; j++)
 137                         *output++ = *input++;
 138         }
 139
 140         history_size += len;
 141         decode_end += len;
 142 }
 143
 144 void FileBase::append_history(short *new_data, int len)
 145 {
 146         allocate_history(len);
 147
 148         for(int i = 0; i < history_channels; i++)
 149         {
 150                 double *output = pcm_history[i] + history_size;
 151                 short *input = new_data + i;
 152                 for(int j = 0; j < len; j++)
 153                 {
 154                         *output++ = (double)*input / 32768;
 155                         input += history_channels;
 156                 }
 157         }
 158
 159         history_size += len;
 160         decode_end += len;
 161 }
 162
 163 void FileBase::read_history(double *dst,
 164         int64_t start_sample,
 165         int channel,
 166         int64_t len)
 167 {
 168         if(start_sample - history_start + len > history_size)
 169                 len = history_size - (start_sample - history_start);
 170 //printf("FileBase::read_history start_sample=%jd history_start=%jd history_size=%jd len=%jd\n",
 171 //start_sample, history_start, history_size, len);
 172         double *input = pcm_history[channel] + start_sample - history_start;
 173         for(int i = 0; i < len; i++)
 174         {
 175                 *dst++ = *input++;
 176         }
 177 }
 178
 179 void FileBase::allocate_history(int len)
 180 {
 181         if(history_size + len > history_allocated)
 182         {
 183                 double **temp = new double*[history_channels];
 184
 185                 for(int i = 0; i < history_channels; i++)
 186                 {
 187                         temp[i] = new double[history_size + len];
 188                         memcpy(temp[i], pcm_history[i], history_size * sizeof(double));
 189                         delete [] pcm_history[i];
 190                 }
 191
 192                 delete [] pcm_history;
 193                 pcm_history = temp;
 194                 history_allocated = history_size + len;
 195         }
 196 }
 197
 198 int64_t FileBase::get_history_sample()
 199 {
 200         return history_start + history_size;
 201 }
 202
 203 int FileBase::set_dither()
 204 {
 205         dither = 1;
 206         return 0;
 207 }
 208
 209 void FileBase::reset_parameters()
 210 {
 211         dither = 0;
 212         float_buffer = 0;
 213         row_pointers_in = 0;
 214         row_pointers_out = 0;
 215         prev_buffer_position = -1;
 216         prev_frame_position = -1;
 217         prev_len = 0;
 218         prev_bytes = 0;
 219         prev_track = -1;
 220         prev_layer = -1;
 221         ulawtofloat_table = 0;
 222         floattoulaw_table = 0;
 223         rd = wr = 0;
 224         pcm_history = 0;
 225         history_start = 0;
 226         history_size = 0;
 227         history_allocated = 0;
 228         history_channels = 0;
 229         decode_end = 0;
 230
 231         delete_ulaw_tables();
 232         reset_parameters_derived();
 233 }
 234
 235 void FileBase::get_mode(char *mode, int rd, int wr)
 236 {
 237         if(rd && !wr) sprintf(mode, "rb");
 238         else if(!rd && wr) sprintf(mode, "wb");
 239         else if(rd && wr) {
 240                 int exists = 0;
 241                 FILE *stream = fopen(asset->path, "rb");
 242                 if( stream ) {
 243                         exists = 1;
 244                         fclose(stream);
 245                 }
 246                 sprintf(mode, exists ? "rb+" : "wb+");
 247         }
 248 }
 249
 250
 251 // ======================================= audio codecs
 252
 253 int FileBase::get_video_buffer(unsigned char **buffer, int depth)
 254 {
 255 // get a raw video buffer for writing or compression by a library
 256         if(!*buffer)
 257         {
 258 // Video compression is entirely done in the library.
 259                 int64_t bytes = asset->width * asset->height * depth;
 260                 *buffer = new unsigned char[bytes];
 261         }
 262         return 0;
 263 }
 264
 265 int FileBase::get_row_pointers(unsigned char *buffer, unsigned char ***pointers, int depth)
 266 {
 267 // This might be fooled if a new VFrame is created at the same address with a different height.
 268         if(*pointers && (*pointers)[0] != &buffer[0])
 269         {
 270                 delete [] *pointers;
 271                 *pointers = 0;
 272         }
 273
 274         if(!*pointers)
 275         {
 276                 *pointers = new unsigned char*[asset->height];
 277                 for(int i = 0; i < asset->height; i++)
 278                 {
 279                         (*pointers)[i] = &buffer[i * asset->width * depth / 8];
 280                 }
 281         }
 282         return 0;
 283 }
 284
 285 int FileBase::match4(const char *in, const char *out)
 286 {
 287         return  in[0] == out[0] && in[1] == out[1] &&
 288                 in[2] == out[2] && in[3] == out[3] ? 1 : 0;
 289 }
 290
 291 int FileBase::search_render_strategies(ArrayList<int>* render_strategies, int render_strategy)
 292 {
 293         for(int i = 0; i < render_strategies->total; i++)
 294                 if(render_strategies->values[i] == render_strategy) return 1;
 295         return 0;
 296 }
 297
 298
 299 int64_t FileBase::base_memory_usage()
 300 {
 301 //printf("FileBase::base_memory_usage %d\n", __LINE__);
 302         return !pcm_history ? 0 :
 303                 history_allocated * history_channels * sizeof(double);
 304 }
 305
 306