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