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