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| 1 : | Isibaar | 3 | /************************************************************************** |
| 2 : | * | ||
| 3 : | * XVID MPEG-4 VIDEO CODEC - Example for encoding and decoding | ||
| 4 : | * | ||
| 5 : | * This program is free software; you can redistribute it and/or modify | ||
| 6 : | * it under the terms of the GNU General Public License as published by | ||
| 7 : | * the Free Software Foundation; either version 2 of the License, or | ||
| 8 : | * (at your option) any later version. | ||
| 9 : | * | ||
| 10 : | * This program is distributed in the hope that it will be useful, | ||
| 11 : | * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| 12 : | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
| 13 : | * GNU General Public License for more details. | ||
| 14 : | * | ||
| 15 : | * You should have received a copy of the GNU General Public License | ||
| 16 : | * along with this program; if not, write to the Free Software | ||
| 17 : | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | ||
| 18 : | * | ||
| 19 : | *************************************************************************/ | ||
| 20 : | |||
| 21 : | /************************************************************************ | ||
| 22 : | * | ||
| 23 : | * Test routine for XviD using the XviD-API | ||
| 24 : | * (C) Christoph Lampert, 2002/01/19 | ||
| 25 : | * | ||
| 26 : | * A sequence of YUV pics in PGM file format is encoded and decoded | ||
| 27 : | * | ||
| 28 : | * The program is plain C and needs no libraries except for libxvidcore, | ||
| 29 : | * so with UN*X you simply compile by | ||
| 30 : | * | ||
| 31 : | * gcc -o xvid_enc_dec xvid_enc_dec.c -lxvidcore | ||
| 32 : | * | ||
| 33 : | * Run without parameters, then PGM input input is read from stdin. | ||
| 34 : | * | ||
| 35 : | * PGM/xvid-output is saved, if corresponding flags are set | ||
| 36 : | * | ||
| 37 : | * input data can be generated e.g. out of MPEG2 with mpeg2dec -o pgmpipe | ||
| 38 : | * | ||
| 39 : | ************************************************************************/ | ||
| 40 : | |||
| 41 : | #include <stdio.h> | ||
| 42 : | #include <stdint.h> | ||
| 43 : | #include <malloc.h> | ||
| 44 : | |||
| 45 : | #include "xvid.h" /* comes with XviD */ | ||
| 46 : | |||
| 47 : | #define ARG_FRAMERATE 25 | ||
| 48 : | #define ARG_BITRATE 900 | ||
| 49 : | |||
| 50 : | int QUALITY =5; | ||
| 51 : | |||
| 52 : | int XDIM=0; | ||
| 53 : | int YDIM=0; // will be set when reading first image | ||
| 54 : | int filenr = 0; | ||
| 55 : | |||
| 56 : | int save_m4v_flag = 0; // save MPEG4-bytestream? | ||
| 57 : | int save_dec_flag = 0; // save decompressed bytestream? | ||
| 58 : | char filepath[256] = "./"; // path where to save output | ||
| 59 : | |||
| 60 : | void *enchandle = NULL; | ||
| 61 : | void *dechandle = NULL; | ||
| 62 : | |||
| 63 : | /*********************************************************************/ | ||
| 64 : | /* Routines for file input/output, nothing specific to XviD */ | ||
| 65 : | /*********************************************************************/ | ||
| 66 : | |||
| 67 : | int read_pgmheader(FILE* handle) | ||
| 68 : | { int bytes,xsize,ysize,depth; | ||
| 69 : | char dummy[2]; | ||
| 70 : | |||
| 71 : | bytes = fread(dummy,1,2,handle); | ||
| 72 : | |||
| 73 : | if ( (bytes < 2) || (dummy[0] != 'P') || (dummy[1] != '5' )) | ||
| 74 : | return 1; | ||
| 75 : | fscanf(handle,"%d %d %d",&xsize,&ysize,&depth); | ||
| 76 : | if ( (xsize > 1440) || (ysize > 2880 ) || (depth != 255) ) | ||
| 77 : | { | ||
| 78 : | fprintf(stderr,"%d %d %d\n",XDIM,YDIM,depth); | ||
| 79 : | return 2; | ||
| 80 : | } | ||
| 81 : | if ( (XDIM==0) || (YDIM==0) ) | ||
| 82 : | { XDIM=xsize; | ||
| 83 : | YDIM=ysize; | ||
| 84 : | } | ||
| 85 : | |||
| 86 : | return 0; | ||
| 87 : | } | ||
| 88 : | |||
| 89 : | int read_pgmdata(FILE* handle, unsigned char *image) | ||
| 90 : | { int i; | ||
| 91 : | char dummy; | ||
| 92 : | |||
| 93 : | unsigned char* buff1_ptr2 = image + XDIM*YDIM; | ||
| 94 : | unsigned char* buff1_ptr3 = image + XDIM*YDIM + XDIM/2*YDIM/2; | ||
| 95 : | |||
| 96 : | fread(image,XDIM,YDIM,stdin); | ||
| 97 : | |||
| 98 : | for (i=0;i<YDIM/2;i++) | ||
| 99 : | { | ||
| 100 : | fread(buff1_ptr2,XDIM/2,1,stdin); | ||
| 101 : | buff1_ptr2 += XDIM/2; | ||
| 102 : | fread(buff1_ptr3,XDIM/2,1,stdin); | ||
| 103 : | buff1_ptr3 += XDIM/2; | ||
| 104 : | } | ||
| 105 : | fread(&dummy,1,1,handle); // should be EOF | ||
| 106 : | return 0; | ||
| 107 : | } | ||
| 108 : | |||
| 109 : | |||
| 110 : | /*********************************************************************/ | ||
| 111 : | /* Routines for encoding: init encoder, frame step, release encoder */ | ||
| 112 : | /*********************************************************************/ | ||
| 113 : | |||
| 114 : | #define FRAMERATE_INCR 1001 | ||
| 115 : | int enc_init() | ||
| 116 : | { | ||
| 117 : | int xerr; | ||
| 118 : | |||
| 119 : | XVID_INIT_PARAM xinit; | ||
| 120 : | XVID_ENC_PARAM xparam; | ||
| 121 : | |||
| 122 : | xinit.cpu_flags = 0; | ||
| 123 : | xvid_init(NULL, 0, &xinit, NULL); | ||
| 124 : | |||
| 125 : | xparam.width = XDIM; | ||
| 126 : | xparam.height = YDIM; | ||
| 127 : | if ((ARG_FRAMERATE - (int)ARG_FRAMERATE) == 0) | ||
| 128 : | { | ||
| 129 : | xparam.fincr = 1; | ||
| 130 : | xparam.fbase = (int)ARG_FRAMERATE; | ||
| 131 : | } | ||
| 132 : | else | ||
| 133 : | { | ||
| 134 : | xparam.fincr = FRAMERATE_INCR; | ||
| 135 : | xparam.fbase = (int)(FRAMERATE_INCR * ARG_FRAMERATE); | ||
| 136 : | } | ||
| 137 : | xparam.bitrate = ARG_BITRATE*1000; | ||
| 138 : | xparam.rc_period = 2000; | ||
| 139 : | xparam.rc_reaction_period = 10; | ||
| 140 : | xparam.rc_reaction_ratio = 20; | ||
| 141 : | xparam.min_quantizer = 1; | ||
| 142 : | xparam.max_quantizer = 31; | ||
| 143 : | xparam.max_key_interval = (int)ARG_FRAMERATE*10; | ||
| 144 : | xparam.motion_search = QUALITY; | ||
| 145 : | xparam.lum_masking = 0; // Luminance Masking is still under development | ||
| 146 : | xparam.quant_type = 0; // 0=h.263, 1=mpeg4 | ||
| 147 : | |||
| 148 : | xerr = xvid_encore(NULL, XVID_ENC_CREATE, &xparam, NULL); | ||
| 149 : | enchandle=xparam.handle; | ||
| 150 : | |||
| 151 : | return xerr; | ||
| 152 : | } | ||
| 153 : | |||
| 154 : | int enc_stop() | ||
| 155 : | { int xerr; | ||
| 156 : | |||
| 157 : | xerr = xvid_encore(enchandle, XVID_ENC_DESTROY, NULL, NULL); | ||
| 158 : | return xerr; | ||
| 159 : | } | ||
| 160 : | |||
| 161 : | int enc_main(unsigned char* image, unsigned char* bitstream, int *streamlength) | ||
| 162 : | { int xerr; | ||
| 163 : | |||
| 164 : | XVID_ENC_FRAME xframe; | ||
| 165 : | XVID_ENC_STATS xstats; | ||
| 166 : | |||
| 167 : | xframe.bitstream = bitstream; | ||
| 168 : | xframe.length = -1; // this is written by the routine | ||
| 169 : | |||
| 170 : | xframe.image = image; | ||
| 171 : | xframe.colorspace = XVID_CSP_YV12; // defined in <xvid.h> | ||
| 172 : | |||
| 173 : | xframe.intra = -1; // let the codec decide between I-frame (1) and P-frame (0) | ||
| 174 : | xframe.quant = 0; | ||
| 175 : | // xframe.quant = QUANTI; // is quant != 0, use a fixed quant (and ignore bitrate) | ||
| 176 : | |||
| 177 : | |||
| 178 : | xerr = xvid_encore(enchandle, XVID_ENC_ENCODE, &xframe, &xstats); | ||
| 179 : | |||
| 180 : | /* enc_result->is_key_frame = xframe.intra; | ||
| 181 : | enc_result->quantizer = xframe.quant; | ||
| 182 : | enc_result->total_bits = xframe.length * 8; | ||
| 183 : | enc_result->motion_bits = xstats.hlength * 8; | ||
| 184 : | enc_result->texture_bits = enc_result->total_bits - enc_result->motion_bits; | ||
| 185 : | */ | ||
| 186 : | |||
| 187 : | /* This is statictical data, e.g. for 2-pass. | ||
| 188 : | If you are not interested in any of this, you can use NULL instead of &xstats | ||
| 189 : | */ | ||
| 190 : | |||
| 191 : | *streamlength = xframe.length; | ||
| 192 : | |||
| 193 : | return xerr; | ||
| 194 : | } | ||
| 195 : | |||
| 196 : | |||
| 197 : | /*********************************************************************/ | ||
| 198 : | /* Routines for decoding: init encoder, frame step, release encoder */ | ||
| 199 : | /*********************************************************************/ | ||
| 200 : | |||
| 201 : | int dec_init() | ||
| 202 : | { | ||
| 203 : | int xerr; | ||
| 204 : | |||
| 205 : | XVID_INIT_PARAM xinit; | ||
| 206 : | XVID_DEC_PARAM xparam; | ||
| 207 : | |||
| 208 : | xinit.cpu_flags = 0; | ||
| 209 : | xvid_init(NULL, 0, &xinit, NULL); | ||
| 210 : | xparam.width = XDIM; | ||
| 211 : | xparam.height = YDIM; | ||
| 212 : | |||
| 213 : | xerr = xvid_decore(NULL, XVID_DEC_CREATE, &xparam, NULL); | ||
| 214 : | dechandle = xparam.handle; | ||
| 215 : | |||
| 216 : | return xerr; | ||
| 217 : | } | ||
| 218 : | |||
| 219 : | int dec_main(unsigned char *m4v_buffer, unsigned char *rgb_buffer, int m4v_size) | ||
| 220 : | { | ||
| 221 : | int xerr; | ||
| 222 : | |||
| 223 : | XVID_DEC_FRAME xframe; | ||
| 224 : | |||
| 225 : | xframe.bitstream = m4v_buffer; | ||
| 226 : | xframe.length = m4v_size; | ||
| 227 : | xframe.image = rgb_buffer; | ||
| 228 : | xframe.stride = XDIM; | ||
| 229 : | xframe.colorspace = XVID_CSP_RGB24; // XVID_CSP_USER is fastest (no memcopy involved) | ||
| 230 : | |||
| 231 : | /* | ||
| 232 : | xframe.colorspace = XVID_CSP_NULL; // use this if you want to skip a frame (no output) | ||
| 233 : | */ | ||
| 234 : | |||
| 235 : | xerr = xvid_decore(dechandle, XVID_DEC_DECODE, &xframe, NULL); | ||
| 236 : | |||
| 237 : | return xerr; | ||
| 238 : | } | ||
| 239 : | |||
| 240 : | int dec_stop() | ||
| 241 : | { | ||
| 242 : | int xerr; | ||
| 243 : | xerr = xvid_decore(dechandle, XVID_DEC_DESTROY, NULL, NULL); | ||
| 244 : | |||
| 245 : | return xerr; | ||
| 246 : | } | ||
| 247 : | |||
| 248 : | |||
| 249 : | /*********************************************************************/ | ||
| 250 : | /* Main program */ | ||
| 251 : | /*********************************************************************/ | ||
| 252 : | |||
| 253 : | int main() | ||
| 254 : | { | ||
| 255 : | unsigned char *divx_buffer = NULL; | ||
| 256 : | unsigned char *yuv_buffer = NULL; | ||
| 257 : | unsigned char *rgb_buffer = NULL; | ||
| 258 : | |||
| 259 : | int status; | ||
| 260 : | int frame_size; | ||
| 261 : | int m4v_size; | ||
| 262 : | |||
| 263 : | char filename[256]; | ||
| 264 : | |||
| 265 : | FILE *filehandle; | ||
| 266 : | |||
| 267 : | /* read YUV in pgm format from stdin */ | ||
| 268 : | if (read_pgmheader(stdin)) | ||
| 269 : | { | ||
| 270 : | printf("Wrong input format, I want YUV encapsulated in PGM\n"); | ||
| 271 : | return 0; | ||
| 272 : | } | ||
| 273 : | |||
| 274 : | /* now we know the sizes, so allocate memory */ | ||
| 275 : | |||
| 276 : | yuv_buffer = (unsigned char *) malloc(XDIM*YDIM); | ||
| 277 : | if (!yuv_buffer) | ||
| 278 : | goto free_all_memory; // goto is one of the most underestimated instructions in C !!! | ||
| 279 : | |||
| 280 : | divx_buffer = (unsigned char *) malloc(XDIM*YDIM*2); // this should really be enough! | ||
| 281 : | if (!divx_buffer) | ||
| 282 : | goto free_all_memory; // actually, every program should contain at least one goto | ||
| 283 : | |||
| 284 : | YDIM = YDIM*2/3; // PGM is YUV 4:2:0 format, so real image height is *2/3 of PGM picture | ||
| 285 : | |||
| 286 : | rgb_buffer = (unsigned char *) malloc(XDIM*YDIM*4); | ||
| 287 : | if (!rgb_buffer) | ||
| 288 : | goto free_all_memory; // but the more, the better! | ||
| 289 : | |||
| 290 : | /*********************************************************************/ | ||
| 291 : | /* DIVX PART Start */ | ||
| 292 : | /*********************************************************************/ | ||
| 293 : | |||
| 294 : | status = enc_init(); | ||
| 295 : | // if (status) | ||
| 296 : | printf("Encore INIT return %d, handle=%lx\n", status, enchandle); | ||
| 297 : | |||
| 298 : | status = dec_init(); | ||
| 299 : | // if (status) | ||
| 300 : | printf("Decore INIT return %d\n", status); | ||
| 301 : | |||
| 302 : | |||
| 303 : | /*********************************************************************/ | ||
| 304 : | /* Main loop */ | ||
| 305 : | /*********************************************************************/ | ||
| 306 : | |||
| 307 : | do | ||
| 308 : | { | ||
| 309 : | status = read_pgmdata(stdin, yuv_buffer); // read PGM data (YUV-format) | ||
| 310 : | if (status) | ||
| 311 : | { | ||
| 312 : | fprintf(stderr, "Couldn't read PGM body: %d\n", status); /* this should not happen */ | ||
| 313 : | continue; | ||
| 314 : | } | ||
| 315 : | |||
| 316 : | /*********************************************************************/ | ||
| 317 : | /* encode and decode this frame */ | ||
| 318 : | /*********************************************************************/ | ||
| 319 : | |||
| 320 : | status = enc_main(yuv_buffer, divx_buffer, &m4v_size); | ||
| 321 : | |||
| 322 : | printf("Frame %5d: encore-ENCODE status %d, m4v-stream length=%7d bytes\n", | ||
| 323 : | filenr, status, m4v_size); | ||
| 324 : | |||
| 325 : | if (save_m4v_flag) | ||
| 326 : | { | ||
| 327 : | sprintf(filename, "%sframe%05d.m4v", filepath, filenr); | ||
| 328 : | filehandle = fopen(filename, "wb"); | ||
| 329 : | fwrite(divx_buffer, m4v_size, 1, filehandle); | ||
| 330 : | fclose(filehandle); | ||
| 331 : | } | ||
| 332 : | |||
| 333 : | status = dec_main(divx_buffer, rgb_buffer, m4v_size); | ||
| 334 : | if (status) | ||
| 335 : | printf("Frame %5d: decore status %d\n",status); | ||
| 336 : | |||
| 337 : | if (save_dec_flag) | ||
| 338 : | { | ||
| 339 : | sprintf(filename, "%sdec%05d.ppm", filepath, filenr); | ||
| 340 : | filehandle=fopen(filename,"wb"); | ||
| 341 : | if (filehandle) | ||
| 342 : | { | ||
| 343 : | fprintf(filehandle,"P6\n"); // rgb24 in PPM format | ||
| 344 : | fprintf(filehandle,"%d %d 255\n",XDIM,YDIM); | ||
| 345 : | fwrite(rgb_buffer,XDIM,YDIM*3,filehandle); | ||
| 346 : | fclose(filehandle); | ||
| 347 : | } | ||
| 348 : | } | ||
| 349 : | |||
| 350 : | filenr++; | ||
| 351 : | status = read_pgmheader(stdin); // if it was the last PGM, stop after it | ||
| 352 : | if (status) | ||
| 353 : | { | ||
| 354 : | fprintf(stderr, "Couldn't read next PGM header: %d\n", status); /* normally, just end of file */ | ||
| 355 : | } | ||
| 356 : | } | ||
| 357 : | while (!status); | ||
| 358 : | |||
| 359 : | /*********************************************************************/ | ||
| 360 : | /* DIVX PART Stop */ | ||
| 361 : | /*********************************************************************/ | ||
| 362 : | |||
| 363 : | dec_stop(); | ||
| 364 : | // if (status) | ||
| 365 : | printf("Encore RELEASE return %d\n", status); | ||
| 366 : | |||
| 367 : | enc_stop(); | ||
| 368 : | // if (status) | ||
| 369 : | printf("Decore RELEASE return %d\n", status); | ||
| 370 : | |||
| 371 : | free_all_memory: | ||
| 372 : | |||
| 373 : | if (rgb_buffer) | ||
| 374 : | free(rgb_buffer); | ||
| 375 : | if (divx_buffer) | ||
| 376 : | free(divx_buffer); | ||
| 377 : | if (yuv_buffer) | ||
| 378 : | free(yuv_buffer); | ||
| 379 : | |||
| 380 : | return 0; | ||
| 381 : | } |
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