cinelerra-5.0/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 "colormodels.h"
  26 #include "format.inc"
  27 #include "file.h"
  28 #include "filebase.h"
  29 #include "overlayframe.h"
  30 #include "sizes.h"
  31
  32 #include <stdlib.h>
  33 #include <string.h>
  34
  35 FileBase::FileBase(Asset *asset, File *file)
  36 {
  37         this->file = file;
  38         this->asset = asset;
  39         internal_byte_order = get_byte_order();
  40         init_ima4();
  41         reset_parameters();
  42         overlayer = new OverlayFrame;
  43 }
  44
  45 FileBase::~FileBase()
  46 {
  47         close_file();
  48         if(row_pointers_in) delete [] row_pointers_in;
  49         if(row_pointers_out) delete [] row_pointers_out;
  50         if(float_buffer) delete [] float_buffer;
  51         delete overlayer;
  52         delete_ima4();
  53 }
  54
  55 int FileBase::close_file()
  56 {
  57         if(row_pointers_in) delete [] row_pointers_in;
  58         if(row_pointers_out) delete [] row_pointers_out;
  59         if(float_buffer) delete [] float_buffer;
  60
  61
  62         if(pcm_history)
  63         {
  64                 for(int i = 0; i < history_channels; i++)
  65                         delete [] pcm_history[i];
  66                 delete [] pcm_history;
  67         }
  68
  69
  70         close_file_derived();
  71         reset_parameters();
  72         delete_ima4();
  73         return 0;
  74 }
  75
  76 void FileBase::update_pcm_history(int64_t len)
  77 {
  78         decode_start = 0;
  79         decode_len = 0;
  80
  81         if(!pcm_history)
  82         {
  83                 history_channels = asset->channels;
  84                 pcm_history = new double*[history_channels];
  85                 for(int i = 0; i < history_channels; i++)
  86                         pcm_history[i] = new double[HISTORY_MAX];
  87                 history_start = 0;
  88                 history_size = 0;
  89                 history_allocated = HISTORY_MAX;
  90         }
  91
  92
  93 //printf("FileBase::update_pcm_history current_sample=" _LD " history_start=" _LD " history_size=" _LD "\n",
  94 //file->current_sample,
  95 //history_start,
  96 //history_size);
  97 // Restart history.  Don't bother shifting history back.
  98         if(file->current_sample < history_start ||
  99                 file->current_sample > history_start + history_size)
 100         {
 101                 history_size = 0;
 102                 history_start = file->current_sample;
 103                 decode_start = file->current_sample;
 104                 decode_len = len;
 105         }
 106         else
 107 // Shift history forward to make room for new samples
 108         if(file->current_sample > history_start + HISTORY_MAX)
 109         {
 110                 int diff = file->current_sample - (history_start + HISTORY_MAX);
 111                 for(int i = 0; i < asset->channels; i++)
 112                 {
 113                         double *temp = pcm_history[i];
 114                         memcpy(temp, temp + diff, (history_size - diff) * sizeof(double));
 115                 }
 116
 117                 history_start += diff;
 118                 history_size -= diff;
 119
 120 // Decode more data
 121                 decode_start = history_start + history_size;
 122                 decode_len = file->current_sample + len - (history_start + history_size);
 123         }
 124         else
 125 // Starting somewhere in the buffer
 126         {
 127                 decode_start = history_start + history_size;
 128                 decode_len = file->current_sample + len - (history_start + history_size);
 129         }
 130 }
 131
 132 void FileBase::append_history(float **new_data, int len)
 133 {
 134         allocate_history(len);
 135
 136         for(int i = 0; i < history_channels; i++)
 137         {
 138                 double *output = pcm_history[i] + history_size;
 139                 float *input = new_data[i];
 140                 for(int j = 0; j < len; j++)
 141                         *output++ = *input++;
 142         }
 143
 144         history_size += len;
 145         decode_end += len;
 146 }
 147
 148 void FileBase::append_history(short *new_data, int len)
 149 {
 150         allocate_history(len);
 151
 152         for(int i = 0; i < history_channels; i++)
 153         {
 154                 double *output = pcm_history[i] + history_size;
 155                 short *input = new_data + i;
 156                 for(int j = 0; j < len; j++)
 157                 {
 158                         *output++ = (double)*input / 32768;
 159                         input += history_channels;
 160                 }
 161         }
 162
 163         history_size += len;
 164         decode_end += len;
 165 }
 166
 167 void FileBase::read_history(double *dst,
 168         int64_t start_sample,
 169         int channel,
 170         int64_t len)
 171 {
 172         if(start_sample - history_start + len > history_size)
 173                 len = history_size - (start_sample - history_start);
 174 //printf("FileBase::read_history start_sample=" _LD " history_start=" _LD " history_size=" _LD " len=" _LD "\n",
 175 //start_sample, history_start, history_size, len);
 176         double *input = pcm_history[channel] + start_sample - history_start;
 177         for(int i = 0; i < len; i++)
 178         {
 179                 *dst++ = *input++;
 180         }
 181 }
 182
 183 void FileBase::allocate_history(int len)
 184 {
 185         if(history_size + len > history_allocated)
 186         {
 187                 double **temp = new double*[history_channels];
 188
 189                 for(int i = 0; i < history_channels; i++)
 190                 {
 191                         temp[i] = new double[history_size + len];
 192                         memcpy(temp[i], pcm_history[i], history_size * sizeof(double));
 193                         delete [] pcm_history[i];
 194                 }
 195
 196                 delete [] pcm_history;
 197                 pcm_history = temp;
 198                 history_allocated = history_size + len;
 199         }
 200 }
 201
 202 int64_t FileBase::get_history_sample()
 203 {
 204         return history_start + history_size;
 205 }
 206
 207 int FileBase::set_dither()
 208 {
 209         dither = 1;
 210         return 0;
 211 }
 212
 213 int FileBase::reset_parameters()
 214 {
 215         dither = 0;
 216         float_buffer = 0;
 217         row_pointers_in = 0;
 218         row_pointers_out = 0;
 219         prev_buffer_position = -1;
 220         prev_frame_position = -1;
 221         prev_len = 0;
 222         prev_bytes = 0;
 223         prev_track = -1;
 224         prev_layer = -1;
 225         ulawtofloat_table = 0;
 226         floattoulaw_table = 0;
 227         rd = wr = 0;
 228         pcm_history = 0;
 229         history_start = 0;
 230         history_size = 0;
 231         history_allocated = 0;
 232         history_channels = 0;
 233         decode_end = 0;
 234
 235         delete_ulaw_tables();
 236         reset_parameters_derived();
 237         return 0;
 238 }
 239
 240 int FileBase::get_mode(char *mode, int rd, int wr)
 241 {
 242         if(rd && !wr) sprintf(mode, "rb");
 243         else if(!rd && wr) sprintf(mode, "wb");
 244         else if(rd && wr) {
 245                 int exists = 0;
 246                 FILE *stream = fopen(asset->path, "rb");
 247                 if( stream ) {
 248                         exists = 1;
 249                         fclose(stream);
 250                 }
 251                 sprintf(mode, exists ? "rb+" : "wb+");
 252         }
 253         return 0;
 254 }
 255
 256
 257 // ======================================= audio codecs
 258
 259 int FileBase::get_video_buffer(unsigned char **buffer, int depth)
 260 {
 261 // get a raw video buffer for writing or compression by a library
 262         if(!*buffer)
 263         {
 264 // Video compression is entirely done in the library.
 265                 int64_t bytes = asset->width * asset->height * depth;
 266                 *buffer = new unsigned char[bytes];
 267         }
 268         return 0;
 269 }
 270
 271 int FileBase::get_row_pointers(unsigned char *buffer, unsigned char ***pointers, int depth)
 272 {
 273 // This might be fooled if a new VFrame is created at the same address with a different height.
 274         if(*pointers && (*pointers)[0] != &buffer[0])
 275         {
 276                 delete [] *pointers;
 277                 *pointers = 0;
 278         }
 279
 280         if(!*pointers)
 281         {
 282                 *pointers = new unsigned char*[asset->height];
 283                 for(int i = 0; i < asset->height; i++)
 284                 {
 285                         (*pointers)[i] = &buffer[i * asset->width * depth / 8];
 286                 }
 287         }
 288         return 0;
 289 }
 290
 291 int FileBase::match4(const char *in, const char *out)
 292 {
 293         return  in[0] == out[0] && in[1] == out[1] &&
 294                 in[2] == out[2] && in[3] == out[3] ? 1 : 0;
 295 }
 296
 297 int FileBase::search_render_strategies(ArrayList<int>* render_strategies, int render_strategy)
 298 {
 299         for(int i = 0; i < render_strategies->total; i++)
 300                 if(render_strategies->values[i] == render_strategy) return 1;
 301         return 0;
 302 }
 303
 304
 305 int64_t FileBase::base_memory_usage()
 306 {
 307 //printf("FileBase::base_memory_usage %d\n", __LINE__);
 308         return !pcm_history ? 0 :
 309                 history_allocated * history_channels * sizeof(double);
 310 }
 311
 312