1 |
/*===========================================================================* |
2 |
* iframe.c * |
3 |
* * |
4 |
* Procedures concerned with the I-frame encoding * |
5 |
* * |
6 |
* EXPORTED PROCEDURES: * |
7 |
* GenIFrame * |
8 |
* SetSlicesPerFrame * |
9 |
* SetBlocksPerSlice * |
10 |
* SetIQScale * |
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* GetIQScale * |
12 |
* ResetIFrameStats * |
13 |
* ShowIFrameSummary * |
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* EstimateSecondsPerIFrame * |
15 |
* EncodeYDC * |
16 |
* EncodeCDC * |
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* time_elapsed * |
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* * |
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*===========================================================================*/ |
20 |
|
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/* |
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* Copyright (c) 1995 The Regents of the University of California. |
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* All rights reserved. |
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* |
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* Permission to use, copy, modify, and distribute this software and its |
26 |
* documentation for any purpose, without fee, and without written agreement is |
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* hereby granted, provided that the above copyright notice and the following |
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* two paragraphs appear in all copies of this software. |
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* |
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* IN NO EVENT SHALL THE UNIVERSITY OF CALIFORNIA BE LIABLE TO ANY PARTY FOR |
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* DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES ARISING OUT |
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* OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF THE UNIVERSITY OF |
33 |
* CALIFORNIA HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
34 |
* |
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* THE UNIVERSITY OF CALIFORNIA SPECIFICALLY DISCLAIMS ANY WARRANTIES, |
36 |
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY |
37 |
* AND FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS |
38 |
* ON AN "AS IS" BASIS, AND THE UNIVERSITY OF CALIFORNIA HAS NO OBLIGATION TO |
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* PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. |
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*/ |
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|
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/* |
43 |
* $Header: /n/picasso/project/mpeg/mpeg_dist/mpeg_encode/RCS/iframe.c,v 1.23 1995/08/14 22:29:49 smoot Exp $ |
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* $Log: iframe.c,v $ |
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* Revision 1.23 1995/08/14 22:29:49 smoot |
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* changed inits in BlockComputeSNR so sgi compiler would be happy |
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* |
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* Revision 1.22 1995/08/07 21:50:51 smoot |
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* spacing |
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* simplified some code |
51 |
* added Laplace stuff |
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* minor error check bug in alloc |
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* |
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* Revision 1.21 1995/06/21 22:24:25 smoot |
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* added CalcDistortion (TUNEing) |
56 |
* fixed timeing stuff for ANSI |
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* fixed specifics bug |
58 |
* |
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* Revision 1.20 1995/05/02 21:59:43 smoot |
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* fixed BlockComputeSNR bugs |
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* |
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* Revision 1.19 1995/04/24 23:02:50 smoot |
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* Fixed BlockComputeSNR for Linux and others |
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* |
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* Revision 1.18 1995/04/14 23:08:02 smoot |
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* reorganized to ease rate control experimentation |
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* |
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* Revision 1.17 1995/02/24 23:49:38 smoot |
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* added support for Specifics file version 2 |
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* |
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* Revision 1.16 1995/01/30 20:02:34 smoot |
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* cleanup, killed a couple warnings |
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* |
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* Revision 1.15 1995/01/30 19:49:17 smoot |
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* cosmetic |
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* |
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* Revision 1.14 1995/01/23 02:49:34 darryl |
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* initialized variable |
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* |
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* Revision 1.13 1995/01/19 23:08:30 eyhung |
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* Changed copyrights |
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* |
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* Revision 1.12 1995/01/16 08:01:34 eyhung |
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* Added realQuiet |
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* |
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* Revision 1.11 1994/12/07 00:40:36 smoot |
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* Added seperate P and B search ranges |
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* |
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* Revision 1.10 1994/11/14 22:30:30 smoot |
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* Merged specifics and rate control |
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* |
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* Revision 1.9 1994/11/01 05:00:48 darryl |
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* with rate control changes added |
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* |
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* Revision 2.2 1994/10/31 00:06:07 darryl |
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* version before, hopefully, final changes |
97 |
* |
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* Revision 2.1 1994/10/24 22:03:01 darryl |
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* put in preliminary experiments code |
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* |
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* Revision 2.0 1994/10/24 02:38:04 darryl |
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* will be adding the experiment stuff. |
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* |
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* Revision 1.1 1994/09/27 00:15:24 darryl |
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* Initial revision |
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* |
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* Revision 1.8 1994/03/15 00:27:11 keving |
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* nothing |
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* |
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* Revision 1.7 1993/12/22 19:19:01 keving |
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* nothing |
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* |
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* Revision 1.6 1993/07/22 22:23:43 keving |
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* nothing |
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* |
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* Revision 1.5 1993/06/30 20:06:09 keving |
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* nothing |
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* |
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* Revision 1.4 1993/06/03 21:08:08 keving |
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* nothing |
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* |
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* Revision 1.3 1993/03/04 22:24:06 keving |
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* nothing |
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* |
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* Revision 1.2 1993/02/19 18:10:02 keving |
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* nothing |
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* |
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* Revision 1.1 1993/02/18 22:56:39 keving |
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* nothing |
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* |
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* |
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*/ |
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|
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|
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/*==============* |
136 |
* HEADER FILES * |
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*==============*/ |
138 |
|
139 |
|
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#ifdef CLOCKS_PER_SEC |
141 |
#include <times.h> |
142 |
#else |
143 |
#include <sys/times.h> |
144 |
#endif |
145 |
|
146 |
#include <sys/param.h> |
147 |
#include "all.h" |
148 |
#include "mtypes.h" |
149 |
#include "frames.h" |
150 |
#include "prototypes.h" |
151 |
#include "mpeg.h" |
152 |
#include "param.h" |
153 |
#include "mheaders.h" |
154 |
#include "fsize.h" |
155 |
#include "parallel.h" |
156 |
#include "postdct.h" |
157 |
#include "rate.h" |
158 |
#include "opts.h" |
159 |
|
160 |
/*==================* |
161 |
* STATIC VARIABLES * |
162 |
*==================*/ |
163 |
|
164 |
static int lastNumBits = 0; |
165 |
static int lastIFrame = 0; |
166 |
static int numBlocks = 0; |
167 |
static int numBits; |
168 |
static int numFrames = 0; |
169 |
static int numFrameBits = 0; |
170 |
static int32 totalTime = 0; |
171 |
static float totalSNR = 0.0; |
172 |
static float totalPSNR = 0.0; |
173 |
|
174 |
static int lengths[256] = { |
175 |
0, 1, 2, 2, 3, 3, 3, 3, /* 0 - 7 */ |
176 |
4, 4, 4, 4, 4, 4, 4, 4, /* 8 - 15 */ |
177 |
5, 5, 5, 5, 5, 5, 5, 5, /* 16 - 31 */ |
178 |
5, 5, 5, 5, 5, 5, 5, 5, |
179 |
6, 6, 6, 6, 6, 6, 6, 6, /* 32 - 63 */ |
180 |
6, 6, 6, 6, 6, 6, 6, 6, |
181 |
6, 6, 6, 6, 6, 6, 6, 6, |
182 |
6, 6, 6, 6, 6, 6, 6, 6, |
183 |
7, 7, 7, 7, 7, 7, 7, 7, /* 64 - 127 */ |
184 |
7, 7, 7, 7, 7, 7, 7, 7, |
185 |
7, 7, 7, 7, 7, 7, 7, 7, |
186 |
7, 7, 7, 7, 7, 7, 7, 7, |
187 |
7, 7, 7, 7, 7, 7, 7, 7, |
188 |
7, 7, 7, 7, 7, 7, 7, 7, |
189 |
7, 7, 7, 7, 7, 7, 7, 7, |
190 |
7, 7, 7, 7, 7, 7, 7, 7, |
191 |
8, 8, 8, 8, 8, 8, 8, 8, |
192 |
8, 8, 8, 8, 8, 8, 8, 8, |
193 |
8, 8, 8, 8, 8, 8, 8, 8, |
194 |
8, 8, 8, 8, 8, 8, 8, 8, |
195 |
8, 8, 8, 8, 8, 8, 8, 8, |
196 |
8, 8, 8, 8, 8, 8, 8, 8, |
197 |
8, 8, 8, 8, 8, 8, 8, 8, |
198 |
8, 8, 8, 8, 8, 8, 8, 8, |
199 |
8, 8, 8, 8, 8, 8, 8, 8, |
200 |
8, 8, 8, 8, 8, 8, 8, 8, |
201 |
8, 8, 8, 8, 8, 8, 8, 8, |
202 |
8, 8, 8, 8, 8, 8, 8, 8, |
203 |
8, 8, 8, 8, 8, 8, 8, 8, |
204 |
8, 8, 8, 8, 8, 8, 8, 8, |
205 |
8, 8, 8, 8, 8, 8, 8, 8, |
206 |
8, 8, 8, 8, 8, 8, 8, 8 |
207 |
}; |
208 |
|
209 |
|
210 |
/*==================* |
211 |
* GLOBAL VARIABLES * |
212 |
*==================*/ |
213 |
|
214 |
int qscaleI; |
215 |
int slicesPerFrame; |
216 |
int blocksPerSlice; |
217 |
int fCodeI, fCodeP, fCodeB; |
218 |
boolean printSNR = FALSE; |
219 |
boolean printMSE = FALSE; |
220 |
boolean decodeRefFrames = FALSE; |
221 |
Block **dct=NULL, **dctr=NULL, **dctb=NULL; |
222 |
dct_data_type **dct_data; /* used in p/bframe.c */ |
223 |
int TIME_RATE; |
224 |
|
225 |
|
226 |
/*=====================* |
227 |
* EXPORTED PROCEDURES * |
228 |
*=====================*/ |
229 |
extern void PrintItoIBitRate _ANSI_ARGS_((int numBits, int frameNum)); |
230 |
|
231 |
/*===============================* |
232 |
* INTERNAL PROCEDURE prototypes * |
233 |
*===============================*/ |
234 |
void AllocDctBlocks _ANSI_ARGS_((void )); |
235 |
int SetFCodeHelper _ANSI_ARGS_((int sr)); |
236 |
void CalcDistortion _ANSI_ARGS_((MpegFrame *current, int y, int x)); |
237 |
|
238 |
int |
239 |
SetFCodeHelper(SR) |
240 |
int SR; |
241 |
{ |
242 |
int range,fCode; |
243 |
|
244 |
if ( pixelFullSearch ) { |
245 |
range = SR; |
246 |
} else { |
247 |
range = SR*2; |
248 |
} |
249 |
|
250 |
if ( range < 256 ) { |
251 |
if ( range < 64 ) { |
252 |
if ( range < 32 ) { |
253 |
fCode = 1; |
254 |
} else { |
255 |
fCode = 2; |
256 |
} |
257 |
} else { |
258 |
if ( range < 128 ) { |
259 |
fCode = 3; |
260 |
} else { |
261 |
fCode = 4; |
262 |
} |
263 |
} |
264 |
} else { |
265 |
if ( range < 1024 ) { |
266 |
if ( range < 512 ) { |
267 |
fCode = 5; |
268 |
} else { |
269 |
fCode = 6; |
270 |
} |
271 |
} else { |
272 |
if ( range < 2048 ) { |
273 |
fCode = 7; |
274 |
} else { |
275 |
fprintf(stderr, "ERROR: INVALID SEARCH RANGE!!!\n"); |
276 |
exit(1); |
277 |
} |
278 |
} |
279 |
} |
280 |
return fCode; |
281 |
} |
282 |
|
283 |
/*===========================================================================* |
284 |
* |
285 |
* SetFCode |
286 |
* |
287 |
* set the forward_f_code and backward_f_code according to the search |
288 |
* range. Must be called AFTER pixelFullSearch and searchRange have |
289 |
* been initialized. Irrelevant for I-frames, but computation is |
290 |
* negligible (done only once, as well) |
291 |
* |
292 |
* RETURNS: nothing |
293 |
* |
294 |
* SIDE EFFECTS: fCodeI,fCodeP,fCodeB |
295 |
* |
296 |
*===========================================================================*/ |
297 |
void |
298 |
SetFCode() |
299 |
{ |
300 |
fCodeI = SetFCodeHelper(1); /* GenIFrame ignores value */ |
301 |
fCodeP = SetFCodeHelper(searchRangeP); |
302 |
fCodeB = SetFCodeHelper(searchRangeB); |
303 |
} |
304 |
|
305 |
/*===========================================================================* |
306 |
* |
307 |
* SetSlicesPerFrame |
308 |
* |
309 |
* set the number of slices per frame |
310 |
* |
311 |
* RETURNS: nothing |
312 |
* |
313 |
* SIDE EFFECTS: slicesPerFrame |
314 |
* |
315 |
*===========================================================================*/ |
316 |
void |
317 |
SetSlicesPerFrame(number) |
318 |
int number; |
319 |
{ |
320 |
slicesPerFrame = number; |
321 |
} |
322 |
|
323 |
|
324 |
/*===========================================================================* |
325 |
* |
326 |
* SetBlocksPerSlice |
327 |
* |
328 |
* set the number of blocks per slice, based on slicesPerFrame |
329 |
* |
330 |
* RETURNS: nothing |
331 |
* |
332 |
* SIDE EFFECTS: blocksPerSlice |
333 |
* |
334 |
*===========================================================================*/ |
335 |
void |
336 |
SetBlocksPerSlice() |
337 |
{ |
338 |
int totalBlocks; |
339 |
|
340 |
totalBlocks = (Fsize_y>>4)*(Fsize_x>>4); |
341 |
|
342 |
if ( slicesPerFrame > totalBlocks ) { |
343 |
blocksPerSlice = 1; |
344 |
} else { |
345 |
blocksPerSlice = totalBlocks/slicesPerFrame; |
346 |
} |
347 |
} |
348 |
|
349 |
|
350 |
/*===========================================================================* |
351 |
* |
352 |
* SetIQScale |
353 |
* |
354 |
* set the I-frame Q-scale |
355 |
* |
356 |
* RETURNS: nothing |
357 |
* |
358 |
* SIDE EFFECTS: qscaleI |
359 |
* |
360 |
*===========================================================================*/ |
361 |
void |
362 |
SetIQScale(qI) |
363 |
int qI; |
364 |
{ |
365 |
qscaleI = qI; |
366 |
} |
367 |
|
368 |
/*===========================================================================* |
369 |
* |
370 |
* GetIQScale |
371 |
* |
372 |
* Get the I-frame Q-scale |
373 |
* |
374 |
* RETURNS: the Iframe Qscale |
375 |
* |
376 |
* SIDE EFFECTS: none |
377 |
* |
378 |
*===========================================================================*/ |
379 |
int |
380 |
GetIQScale() |
381 |
{ |
382 |
return qscaleI; |
383 |
} |
384 |
|
385 |
/*===========================================================================* |
386 |
* |
387 |
* GenIFrame |
388 |
* |
389 |
* generate an I-frame; appends result to bb |
390 |
* |
391 |
* RETURNS: I-frame appended to bb |
392 |
* |
393 |
* SIDE EFFECTS: none |
394 |
* |
395 |
*===========================================================================*/ |
396 |
void |
397 |
GenIFrame(bb, current) |
398 |
BitBucket *bb; |
399 |
MpegFrame *current; |
400 |
{ |
401 |
register int x, y; |
402 |
register int index; |
403 |
FlatBlock fb[6]; |
404 |
Block dec[6]; |
405 |
int32 y_dc_pred, cr_dc_pred, cb_dc_pred; |
406 |
int totalBits; |
407 |
int totalFrameBits; |
408 |
int32 startTime, endTime; |
409 |
float snr[3], psnr[3]; |
410 |
int mbAddress; |
411 |
int QScale; |
412 |
BlockMV *info; /* Not used in Iframes, but nice to pass in anyway */ |
413 |
int bitstreamMode, newQScale; |
414 |
int rc_blockStart=0; |
415 |
|
416 |
if (dct==NULL) AllocDctBlocks(); |
417 |
if (collect_quant) {fprintf(collect_quant_fp, "# I\n");} |
418 |
|
419 |
/* set-up for statistics */ |
420 |
numFrames++; |
421 |
totalFrameBits = bb->cumulativeBits; |
422 |
if ( ( ! childProcess) && showBitRatePerFrame ) { |
423 |
if ( lastNumBits == 0 ) { |
424 |
lastNumBits = bb->cumulativeBits; |
425 |
lastIFrame = current->id; |
426 |
} else { |
427 |
/* ASSUMES 30 FRAMES PER SECOND */ |
428 |
|
429 |
if (! realQuiet) { |
430 |
fprintf(stdout, "I-to-I (frames %5d to %5d) bitrate: %8d\n", |
431 |
lastIFrame, current->id-1, |
432 |
((bb->cumulativeBits-lastNumBits)*30)/ |
433 |
(current->id-lastIFrame)); |
434 |
} |
435 |
|
436 |
fprintf(bitRateFile, "I-to-I (frames %5d to %5d) bitrate: %8d\n", |
437 |
lastIFrame, current->id-1, |
438 |
((bb->cumulativeBits-lastNumBits)*30)/ |
439 |
(current->id-lastIFrame)); |
440 |
lastNumBits = bb->cumulativeBits; |
441 |
lastIFrame = current->id; |
442 |
} |
443 |
} |
444 |
|
445 |
startTime = time_elapsed(); |
446 |
|
447 |
Frame_AllocBlocks(current); |
448 |
BlockifyFrame(current); |
449 |
|
450 |
DBG_PRINT(("Generating iframe\n")); |
451 |
QScale = GetIQScale(); |
452 |
/* Allocate bits for this frame for rate control purposes */ |
453 |
bitstreamMode = getRateMode(); |
454 |
if (bitstreamMode == FIXED_RATE) { |
455 |
targetRateControl(current); |
456 |
} |
457 |
|
458 |
Mhead_GenPictureHeader(bb, I_FRAME, current->id, fCodeI); |
459 |
/* Check for Qscale change */ |
460 |
if (specificsOn) { |
461 |
newQScale = SpecLookup(current->id, 0, 0 /* junk */, &info, QScale); |
462 |
if (newQScale != -1) { |
463 |
QScale = newQScale; |
464 |
} |
465 |
/* check for slice */ |
466 |
newQScale = SpecLookup(current->id, 1, 1, &info, QScale); |
467 |
if (newQScale != -1) { |
468 |
QScale = newQScale; |
469 |
} |
470 |
} |
471 |
Mhead_GenSliceHeader(bb, 1, QScale, NULL, 0); |
472 |
|
473 |
if ( referenceFrame == DECODED_FRAME ) { |
474 |
Frame_AllocDecoded(current, TRUE); |
475 |
} else if ( printSNR ) { |
476 |
Frame_AllocDecoded(current, FALSE); |
477 |
} |
478 |
|
479 |
y_dc_pred = cr_dc_pred = cb_dc_pred = 128; |
480 |
totalBits = bb->cumulativeBits; |
481 |
mbAddress = 0; |
482 |
|
483 |
/* DCT the macroblocks */ |
484 |
for (y = 0; y < (Fsize_y >> 3); y += 2) { |
485 |
for (x = 0; x < (Fsize_x >> 3); x += 2) { |
486 |
if (collect_quant && (collect_quant_detailed & 1)) fprintf(collect_quant_fp, "l\n"); |
487 |
if (DoLaplace) {LaplaceCnum = 0;} |
488 |
mp_fwd_dct_block2(current->y_blocks[y][x], dct[y][x]); |
489 |
mp_fwd_dct_block2(current->y_blocks[y][x+1], dct[y][x+1]); |
490 |
mp_fwd_dct_block2(current->y_blocks[y+1][x], dct[y+1][x]); |
491 |
mp_fwd_dct_block2(current->y_blocks[y+1][x+1], dct[y+1][x+1]); |
492 |
if (collect_quant && (collect_quant_detailed & 1)) fprintf(collect_quant_fp, "c\n"); |
493 |
if (DoLaplace) {LaplaceCnum = 1;} |
494 |
mp_fwd_dct_block2(current->cb_blocks[y>>1][x>>1], dctb[y>>1][x>>1]); |
495 |
if (DoLaplace) {LaplaceCnum = 2;} |
496 |
mp_fwd_dct_block2(current->cr_blocks[y>>1][x>>1], dctr[y>>1][x>>1]); |
497 |
}} |
498 |
|
499 |
if (DoLaplace) { |
500 |
extern void CalcLambdas(); |
501 |
CalcLambdas(); |
502 |
} |
503 |
|
504 |
for (y = 0; y < (Fsize_y >> 3); y += 2) { |
505 |
for (x = 0; x < (Fsize_x >> 3); x += 2) { |
506 |
/* Check for Qscale change */ |
507 |
if (specificsOn) { |
508 |
newQScale = SpecLookup(current->id, 2, mbAddress, &info, QScale); |
509 |
if (newQScale != -1) { |
510 |
QScale = newQScale; |
511 |
} |
512 |
} |
513 |
|
514 |
/* Determine if new Qscale needed for Rate Control purposes */ |
515 |
if (bitstreamMode == FIXED_RATE) { |
516 |
rc_blockStart = bb->cumulativeBits; |
517 |
newQScale = needQScaleChange(qscaleI, |
518 |
current->y_blocks[y][x], |
519 |
current->y_blocks[y][x+1], |
520 |
current->y_blocks[y+1][x], |
521 |
current->y_blocks[y+1][x+1]); |
522 |
if (newQScale > 0) { |
523 |
QScale = newQScale; |
524 |
} |
525 |
} |
526 |
|
527 |
if ( (mbAddress % blocksPerSlice == 0) && (mbAddress != 0) ) { |
528 |
/* create a new slice */ |
529 |
if (specificsOn) { |
530 |
/* Make sure no slice Qscale change */ |
531 |
newQScale = SpecLookup(current->id,1,mbAddress/blocksPerSlice, &info, QScale); |
532 |
if (newQScale != -1) QScale = newQScale; |
533 |
} |
534 |
Mhead_GenSliceEnder(bb); |
535 |
Mhead_GenSliceHeader(bb, 1+(y>>1), QScale, NULL, 0); |
536 |
y_dc_pred = cr_dc_pred = cb_dc_pred = 128; |
537 |
|
538 |
GEN_I_BLOCK(I_FRAME, current, bb, 1+(x>>1), QScale); |
539 |
} else { |
540 |
GEN_I_BLOCK(I_FRAME, current, bb, 1, QScale); |
541 |
} |
542 |
|
543 |
if (WriteDistortionNumbers) { |
544 |
CalcDistortion(current, y, x); |
545 |
} |
546 |
|
547 |
if ( decodeRefFrames ) { |
548 |
/* now, reverse the DCT transform */ |
549 |
LaplaceCnum = 0; |
550 |
for ( index = 0; index < 6; index++ ) { |
551 |
if (!DoLaplace) { |
552 |
Mpost_UnQuantZigBlock(fb[index], dec[index], QScale, TRUE); |
553 |
} else { |
554 |
if (index == 4) {LaplaceCnum = 1;} |
555 |
if (index == 5) {LaplaceCnum = 2;} |
556 |
Mpost_UnQuantZigBlockLaplace(fb[index], dec[index], QScale, TRUE); |
557 |
} |
558 |
mpeg_jrevdct((int16 *)dec[index]); |
559 |
} |
560 |
|
561 |
/* now, unblockify */ |
562 |
BlockToData(current->decoded_y, dec[0], y, x); |
563 |
BlockToData(current->decoded_y, dec[1], y, x+1); |
564 |
BlockToData(current->decoded_y, dec[2], y+1, x); |
565 |
BlockToData(current->decoded_y, dec[3], y+1, x+1); |
566 |
BlockToData(current->decoded_cb, dec[4], y>>1, x>>1); |
567 |
BlockToData(current->decoded_cr, dec[5], y>>1, x>>1); |
568 |
} |
569 |
|
570 |
numBlocks++; |
571 |
mbAddress++; |
572 |
/* Rate Control */ |
573 |
if (bitstreamMode == FIXED_RATE) { |
574 |
incMacroBlockBits(bb->cumulativeBits - rc_blockStart); |
575 |
rc_blockStart = bb->cumulativeBits; |
576 |
MB_RateOut(TYPE_IFRAME); |
577 |
} |
578 |
} |
579 |
} |
580 |
|
581 |
if ( printSNR ) { |
582 |
BlockComputeSNR(current,snr,psnr); |
583 |
totalSNR += snr[0]; |
584 |
totalPSNR += psnr[0]; |
585 |
} |
586 |
|
587 |
if ( (referenceFrame == DECODED_FRAME) && NonLocalRefFrame(current->id) ) { |
588 |
if ( remoteIO ) { |
589 |
SendDecodedFrame(current); |
590 |
} else { |
591 |
WriteDecodedFrame(current); |
592 |
} |
593 |
|
594 |
/* now, tell decode server it is ready */ |
595 |
NotifyDecodeServerReady(current->id); |
596 |
} |
597 |
|
598 |
numBits += (bb->cumulativeBits-totalBits); |
599 |
|
600 |
DBG_PRINT(("End of frame\n")); |
601 |
|
602 |
Mhead_GenSliceEnder(bb); |
603 |
/* Rate Control */ |
604 |
if (bitstreamMode == FIXED_RATE) { |
605 |
updateRateControl(TYPE_IFRAME); |
606 |
} |
607 |
|
608 |
endTime = time_elapsed(); |
609 |
totalTime += (endTime-startTime); |
610 |
|
611 |
numFrameBits += (bb->cumulativeBits-totalFrameBits); |
612 |
|
613 |
if ( ( ! childProcess) && showBitRatePerFrame ) { |
614 |
/* ASSUMES 30 FRAMES PER SECOND */ |
615 |
fprintf(bitRateFile, "%5d\t%8d\n", current->id, |
616 |
30*(bb->cumulativeBits-totalFrameBits)); |
617 |
} |
618 |
|
619 |
if ( (! childProcess) && frameSummary && (! realQuiet) ) { |
620 |
|
621 |
/* ASSUMES 30 FRAMES PER SECOND */ |
622 |
fprintf(stdout, "FRAME %d (I): %ld seconds (%d bits/s output)\n", |
623 |
current->id, (long)((endTime-startTime)/TIME_RATE), |
624 |
30*(bb->cumulativeBits-totalFrameBits)); |
625 |
if ( printSNR ) { |
626 |
fprintf(stdout, "FRAME %d: SNR: %.1f\t%.1f\t%.1f\tPSNR: %.1f\t%.1f\t%.1f\n", |
627 |
current->id, snr[0], snr[1], snr[2], |
628 |
psnr[0], psnr[1], psnr[2]); |
629 |
} |
630 |
} |
631 |
} |
632 |
|
633 |
|
634 |
/*===========================================================================* |
635 |
* |
636 |
* ResetIFrameStats |
637 |
* |
638 |
* reset the I-frame statistics |
639 |
* |
640 |
* RETURNS: nothing |
641 |
* |
642 |
* SIDE EFFECTS: none |
643 |
* |
644 |
*===========================================================================*/ |
645 |
void |
646 |
ResetIFrameStats() |
647 |
{ |
648 |
numBlocks = 0; |
649 |
numBits = 0; |
650 |
numFrames = 0; |
651 |
numFrameBits = 0; |
652 |
totalTime = 0; |
653 |
} |
654 |
|
655 |
|
656 |
/*===========================================================================* |
657 |
* |
658 |
* ShowIFrameSummary |
659 |
* |
660 |
* prints out statistics on all I-frames |
661 |
* |
662 |
* RETURNS: time taken for I-frames (in seconds) |
663 |
* |
664 |
* SIDE EFFECTS: none |
665 |
* |
666 |
*===========================================================================*/ |
667 |
float |
668 |
ShowIFrameSummary(inputFrameBits, totalBits, fpointer) |
669 |
int inputFrameBits; |
670 |
int32 totalBits; |
671 |
FILE *fpointer; |
672 |
{ |
673 |
if ( numFrames == 0 ) { |
674 |
return 0.0; |
675 |
} |
676 |
|
677 |
fprintf(fpointer, "-------------------------\n"); |
678 |
fprintf(fpointer, "*****I FRAME SUMMARY*****\n"); |
679 |
fprintf(fpointer, "-------------------------\n"); |
680 |
|
681 |
fprintf(fpointer, " Blocks: %5d (%6d bits) (%5d bpb)\n", |
682 |
numBlocks, numBits, numBits/numBlocks); |
683 |
fprintf(fpointer, " Frames: %5d (%6d bits) (%5d bpf) (%2.1f%% of total)\n", |
684 |
numFrames, numFrameBits, numFrameBits/numFrames, |
685 |
100.0*(float)numFrameBits/(float)totalBits); |
686 |
fprintf(fpointer, " Compression: %3d:1 (%9.4f bpp)\n", |
687 |
numFrames*inputFrameBits/numFrameBits, |
688 |
24.0*(float)numFrameBits/(float)(numFrames*inputFrameBits)); |
689 |
if ( printSNR ) |
690 |
fprintf(fpointer, " Avg Y SNR/PSNR: %.1f %.1f\n", |
691 |
totalSNR/(float)numFrames, totalPSNR/(float)numFrames); |
692 |
if ( totalTime == 0 ) { |
693 |
fprintf(fpointer, " Seconds: NONE\n"); |
694 |
} else { |
695 |
fprintf(fpointer, " Seconds: %9ld (%9.4f fps) (%9ld pps) (%9ld mps)\n", |
696 |
(long)(totalTime/TIME_RATE), |
697 |
(float)((float)(TIME_RATE*numFrames)/(float)totalTime), |
698 |
(long)((float)TIME_RATE*(float)numFrames*(float)inputFrameBits/(24.0*(float)totalTime)), |
699 |
(long)((float)TIME_RATE*(float)numFrames*(float)inputFrameBits/(256.0*24.0*(float)totalTime))); |
700 |
} |
701 |
|
702 |
return (float)totalTime/(float)TIME_RATE; |
703 |
} |
704 |
|
705 |
|
706 |
/*===========================================================================* |
707 |
* |
708 |
* EstimateSecondsPerIFrame |
709 |
* |
710 |
* estimates the number of seconds required per I-frame |
711 |
* |
712 |
* RETURNS: seconds (floating point value) |
713 |
* |
714 |
* SIDE EFFECTS: none |
715 |
* |
716 |
*===========================================================================*/ |
717 |
float |
718 |
EstimateSecondsPerIFrame() |
719 |
{ |
720 |
return (float)totalTime/((float)TIME_RATE*(float)numFrames); |
721 |
} |
722 |
|
723 |
|
724 |
/*===========================================================================* |
725 |
* |
726 |
* EncodeYDC |
727 |
* |
728 |
* Encode the DC portion of a DCT of a luminance block |
729 |
* |
730 |
* RETURNS: result appended to bb |
731 |
* |
732 |
* SIDE EFFECTS: updates pred_term |
733 |
* |
734 |
*===========================================================================*/ |
735 |
void |
736 |
EncodeYDC(dc_term, pred_term, bb) |
737 |
int32 dc_term; |
738 |
int32 *pred_term; |
739 |
BitBucket *bb; |
740 |
{ |
741 |
/* see Table B.5a -- MPEG-I doc */ |
742 |
static int codes[9] = { |
743 |
0x4, 0x0, 0x1, 0x5, 0x6, 0xe, 0x1e, 0x3e, 0x7e |
744 |
}; |
745 |
static int codeLengths[9] = { |
746 |
3, 2, 2, 3, 3, 4, 5, 6, 7 |
747 |
}; |
748 |
int ydiff, ydiff_abs; |
749 |
int length; |
750 |
|
751 |
ydiff = (dc_term - (*pred_term)); |
752 |
if (ydiff > 255) { |
753 |
#ifdef BLEAH |
754 |
fprintf(stdout, "TRUNCATED\n"); |
755 |
#endif |
756 |
ydiff = 255; |
757 |
} else if (ydiff < -255) { |
758 |
#ifdef BLEAH |
759 |
fprintf(stdout, "TRUNCATED\n"); |
760 |
#endif |
761 |
ydiff = -255; |
762 |
} |
763 |
|
764 |
ydiff_abs = ABS(ydiff); |
765 |
length = lengths[ydiff_abs]; |
766 |
Bitio_Write(bb, codes[length], codeLengths[length]); |
767 |
if ( length != 0 ) { |
768 |
if ( ydiff > 0 ) { |
769 |
Bitio_Write(bb, ydiff_abs, length); |
770 |
} else { |
771 |
Bitio_Write(bb, ~ydiff_abs, length); |
772 |
} |
773 |
} |
774 |
|
775 |
(*pred_term) += ydiff; |
776 |
} |
777 |
|
778 |
|
779 |
/*===========================================================================* |
780 |
* |
781 |
* EncodeCDC |
782 |
* |
783 |
* Encode the DC portion of a DCT of a chrominance block |
784 |
* |
785 |
* RETURNS: result appended to bb |
786 |
* |
787 |
* SIDE EFFECTS: updates pred_term |
788 |
* |
789 |
*===========================================================================*/ |
790 |
void |
791 |
EncodeCDC(dc_term, pred_term, bb) |
792 |
int32 dc_term; |
793 |
int32 *pred_term; |
794 |
BitBucket *bb; |
795 |
{ |
796 |
/* see Table B.5b -- MPEG-I doc */ |
797 |
static int codes[9] = { |
798 |
0x0, 0x1, 0x2, 0x6, 0xe, 0x1e, 0x3e, 0x7e, 0xfe |
799 |
}; |
800 |
static int codeLengths[9] = { |
801 |
2, 2, 2, 3, 4, 5, 6, 7, 8 |
802 |
}; |
803 |
int cdiff, cdiff_abs; |
804 |
int length; |
805 |
|
806 |
cdiff = (dc_term - (*pred_term)); |
807 |
if (cdiff > 255) { |
808 |
#ifdef BLEAH |
809 |
fprintf(stdout, "TRUNCATED\n"); |
810 |
#endif |
811 |
cdiff = 255; |
812 |
} else if (cdiff < -255) { |
813 |
#ifdef BLEAH |
814 |
fprintf(stdout, "TRUNCATED\n"); |
815 |
#endif |
816 |
cdiff = -255; |
817 |
} |
818 |
|
819 |
cdiff_abs = ABS(cdiff); |
820 |
length = lengths[cdiff_abs]; |
821 |
Bitio_Write(bb, codes[length], codeLengths[length]); |
822 |
if ( length != 0 ) { |
823 |
if ( cdiff > 0 ) { |
824 |
Bitio_Write(bb, cdiff_abs, length); |
825 |
} else { |
826 |
Bitio_Write(bb, ~cdiff_abs, length); |
827 |
} |
828 |
} |
829 |
|
830 |
(*pred_term) += cdiff; |
831 |
} |
832 |
|
833 |
|
834 |
void |
835 |
BlockComputeSNR(current, snr, psnr) |
836 |
MpegFrame *current; |
837 |
float snr[]; |
838 |
float psnr[]; |
839 |
{ |
840 |
register int32 tempInt; |
841 |
register int y, x; |
842 |
int32 varDiff[3]; |
843 |
double ratio[3]; |
844 |
double total[3]; |
845 |
register uint8 **origY=current->orig_y, **origCr=current->orig_cr, |
846 |
**origCb=current->orig_cb; |
847 |
register uint8 **newY=current->decoded_y, **newCr=current->decoded_cr, |
848 |
**newCb=current->decoded_cb; |
849 |
static int32 **SignalY, **NoiseY; |
850 |
static int32 **SignalCb, **NoiseCb; |
851 |
static int32 **SignalCr, **NoiseCr; |
852 |
static short ySize[3], xSize[3]; |
853 |
static boolean needs_init=TRUE; |
854 |
|
855 |
/* Init */ |
856 |
if (needs_init) { |
857 |
int ysz = (Fsize_y>>3) * sizeof(int32 *); |
858 |
int xsz = (Fsize_x>>3); |
859 |
|
860 |
needs_init = FALSE; |
861 |
for (y=0; y<3; y++) { |
862 |
varDiff[y] = ratio[y] = total[y] = 0.0; |
863 |
} |
864 |
ySize[0]=Fsize_y; xSize[0]=Fsize_x; |
865 |
ySize[1]=Fsize_y>>1; xSize[1]=Fsize_x>>1; |
866 |
ySize[2]=Fsize_y>>1; xSize[2]=Fsize_x>>1; |
867 |
SignalY = (int32 **) malloc(ysz); |
868 |
NoiseY = (int32 **) malloc(ysz); |
869 |
SignalCb = (int32 **) malloc(ysz); |
870 |
NoiseCb = (int32 **) malloc(ysz); |
871 |
SignalCr = (int32 **) malloc(ysz); |
872 |
NoiseCr = (int32 **) malloc(ysz); |
873 |
if (SignalY == NULL || NoiseY == NULL || SignalCr == NULL || |
874 |
NoiseCb == NULL || SignalCb == NULL || NoiseCr == NULL) { |
875 |
fprintf(stderr, "Out of memory in BlockComputeSNR\n"); |
876 |
exit(-1); |
877 |
} |
878 |
for (y = 0; y < ySize[0]>>3; y++) { |
879 |
SignalY[y] = (int32 *) calloc(xsz,4); |
880 |
SignalCr[y] = (int32 *) calloc(xsz,4); |
881 |
SignalCb[y] = (int32 *) calloc(xsz,4); |
882 |
NoiseY[y] = (int32 *) calloc(xsz,4); |
883 |
NoiseCr[y] = (int32 *) calloc(xsz,4); |
884 |
NoiseCb[y] = (int32 *) calloc(xsz,4); |
885 |
} |
886 |
} else { |
887 |
for (y = 0; y < ySize[0]>>3; y++) { |
888 |
memset((char *) &NoiseY[y][0], 0, (xSize[0]>>3) * 4); |
889 |
memset((char *) &SignalY[y][0], 0, (xSize[0]>>3) * 4); |
890 |
memset((char *) &NoiseCb[y][0], 0, (xSize[0]>>3) * 4); |
891 |
memset((char *) &NoiseCr[y][0], 0, (xSize[0]>>3) * 4); |
892 |
memset((char *) &SignalCb[y][0], 0, (xSize[0]>>3) * 4); |
893 |
memset((char *) &SignalCr[y][0], 0, (xSize[0]>>3) * 4); |
894 |
} |
895 |
} |
896 |
|
897 |
/* find all the signal and noise */ |
898 |
for (y = 0; y < ySize[0]; y++) { |
899 |
for (x = 0; x < xSize[0]; x++) { |
900 |
tempInt = (origY[y][x] - newY[y][x]); |
901 |
NoiseY[y>>4][x>>4] += tempInt*tempInt; |
902 |
total[0] += (double)abs(tempInt); |
903 |
tempInt = origY[y][x]; |
904 |
SignalY[y>>4][x>>4] += tempInt*tempInt; |
905 |
}} |
906 |
for (y = 0; y < ySize[1]; y++) { |
907 |
for (x = 0; x < xSize[1]; x ++) { |
908 |
tempInt = (origCb[y][x] - newCb[y][x]); |
909 |
NoiseCb[y>>3][x>>3] += tempInt*tempInt; |
910 |
total[1] += (double)abs(tempInt); |
911 |
tempInt = origCb[y][x]; |
912 |
SignalCb[y>>3][x>>3] += tempInt*tempInt; |
913 |
tempInt = (origCr[y][x]-newCr[y][x]); |
914 |
NoiseCr[y>>3][x>>3] += tempInt*tempInt; |
915 |
total[2] += (double)abs(tempInt); |
916 |
tempInt = origCr[y][x]; |
917 |
SignalCr[y>>3][x>>3] += tempInt*tempInt; |
918 |
}} |
919 |
|
920 |
/* Now sum up that noise */ |
921 |
for(y=0; y<Fsize_y>>4; y++){ |
922 |
for(x=0; x<Fsize_x>>4; x++){ |
923 |
varDiff[0] += NoiseY[y][x]; |
924 |
varDiff[1] += NoiseCb[y][x]; |
925 |
varDiff[2] += NoiseCr[y][x]; |
926 |
if (printMSE) printf("%4d ",(int)(NoiseY[y][x]/256.0)); |
927 |
} |
928 |
if (printMSE) puts(""); |
929 |
} |
930 |
|
931 |
/* Now look at those ratios! */ |
932 |
for(y=0; y<Fsize_y>>4; y++){ |
933 |
for(x=0; x<Fsize_x>>4; x++){ |
934 |
ratio[0] += (double)SignalY[y][x]/(double)varDiff[0]; |
935 |
ratio[1] += (double)SignalCb[y][x]/(double)varDiff[1]; |
936 |
ratio[2] += (double)SignalCr[y][x]/(double)varDiff[2]; |
937 |
}} |
938 |
|
939 |
for (x=0; x<3; x++) { |
940 |
snr[x] = 10.0*log10(ratio[x]); |
941 |
psnr[x] = 20.0*log10(255.0/sqrt((double)varDiff[x]/(double)(ySize[x]*xSize[x]))); |
942 |
|
943 |
if (! realQuiet) { |
944 |
fprintf(stdout, "Mean error[%1d]: %f\n", x, total[x]/(double)(xSize[x]*ySize[x])); |
945 |
} |
946 |
|
947 |
} |
948 |
} |
949 |
|
950 |
void |
951 |
WriteDecodedFrame(frame) |
952 |
MpegFrame *frame; |
953 |
{ |
954 |
FILE *fpointer; |
955 |
char fileName[256]; |
956 |
int width, height; |
957 |
register int y; |
958 |
|
959 |
/* need to save decoded frame to disk because it might be accessed |
960 |
by another process */ |
961 |
|
962 |
width = Fsize_x; |
963 |
height = Fsize_y; |
964 |
|
965 |
sprintf(fileName, "%s.decoded.%d", outputFileName, frame->id); |
966 |
|
967 |
if (!realQuiet) { |
968 |
fprintf(stdout, "Outputting to %s\n", fileName); |
969 |
fflush(stdout); |
970 |
} |
971 |
|
972 |
fpointer = fopen(fileName, "wb"); |
973 |
|
974 |
for ( y = 0; y < height; y++ ) { |
975 |
fwrite(frame->decoded_y[y], 1, width, fpointer); |
976 |
} |
977 |
|
978 |
for (y = 0; y < (height >> 1); y++) { /* U */ |
979 |
fwrite(frame->decoded_cb[y], 1, width >> 1, fpointer); |
980 |
} |
981 |
|
982 |
for (y = 0; y < (height >> 1); y++) { /* V */ |
983 |
fwrite(frame->decoded_cr[y], 1, width >> 1, fpointer); |
984 |
} |
985 |
fflush(fpointer); |
986 |
fclose(fpointer); |
987 |
} |
988 |
|
989 |
|
990 |
void |
991 |
PrintItoIBitRate(numBits, frameNum) |
992 |
int numBits; |
993 |
int frameNum; |
994 |
{ |
995 |
if ( ( ! childProcess) && showBitRatePerFrame ) { |
996 |
/* ASSUMES 30 FRAMES PER SECOND */ |
997 |
|
998 |
if (! realQuiet) { |
999 |
fprintf(stdout, "I-to-I (frames %5d to %5d) bitrate: %8d\n", |
1000 |
lastIFrame, frameNum-1, |
1001 |
((numBits-lastNumBits)*30)/ |
1002 |
(frameNum-lastIFrame)); |
1003 |
} |
1004 |
|
1005 |
fprintf(bitRateFile, "I-to-I (frames %5d to %5d) bitrate: %8d\n", |
1006 |
lastIFrame, frameNum-1, |
1007 |
((numBits-lastNumBits)*30)/ |
1008 |
(frameNum-lastIFrame)); |
1009 |
} |
1010 |
} |
1011 |
|
1012 |
|
1013 |
/*===========================================================================* |
1014 |
* |
1015 |
* AllocDctBlocks |
1016 |
* |
1017 |
* allocate memory for dct blocks |
1018 |
* |
1019 |
* RETURNS: nothing |
1020 |
* |
1021 |
* SIDE EFFECTS: creates dct, dctr, dctb |
1022 |
* |
1023 |
*===========================================================================*/ |
1024 |
void |
1025 |
AllocDctBlocks() |
1026 |
{ |
1027 |
int dctx, dcty; |
1028 |
int i; |
1029 |
|
1030 |
dctx = Fsize_x / DCTSIZE; |
1031 |
dcty = Fsize_y / DCTSIZE; |
1032 |
|
1033 |
dct = (Block **) malloc(sizeof(Block *) * dcty); |
1034 |
ERRCHK(dct, "malloc"); |
1035 |
for (i = 0; i < dcty; i++) { |
1036 |
dct[i] = (Block *) malloc(sizeof(Block) * dctx); |
1037 |
ERRCHK(dct[i], "malloc"); |
1038 |
} |
1039 |
|
1040 |
dct_data = (dct_data_type **) malloc(sizeof(dct_data_type *) * dcty); |
1041 |
ERRCHK(dct_data, "malloc"); |
1042 |
for (i = 0; i < dcty; i++) { |
1043 |
dct_data[i] = (dct_data_type *) malloc(sizeof(dct_data_type) * dctx); |
1044 |
ERRCHK(dct[i], "malloc"); |
1045 |
} |
1046 |
|
1047 |
dctr = (Block **) malloc(sizeof(Block *) * (dcty >> 1)); |
1048 |
dctb = (Block **) malloc(sizeof(Block *) * (dcty >> 1)); |
1049 |
ERRCHK(dctr, "malloc"); |
1050 |
ERRCHK(dctb, "malloc"); |
1051 |
for (i = 0; i < (dcty >> 1); i++) { |
1052 |
dctr[i] = (Block *) malloc(sizeof(Block) * (dctx >> 1)); |
1053 |
dctb[i] = (Block *) malloc(sizeof(Block) * (dctx >> 1)); |
1054 |
ERRCHK(dctr[i], "malloc"); |
1055 |
ERRCHK(dctb[i], "malloc"); |
1056 |
} |
1057 |
} |
1058 |
|
1059 |
|
1060 |
/*======================================================================* |
1061 |
* |
1062 |
* time_elapsed |
1063 |
* |
1064 |
* Handle different time systems on different machines |
1065 |
* |
1066 |
* RETURNS number of seconds process time used |
1067 |
* |
1068 |
*======================================================================*/ |
1069 |
int32 time_elapsed() |
1070 |
{ |
1071 |
#ifdef CLOCKS_PER_SEC |
1072 |
/* ANSI C */ |
1073 |
TIME_RATE = CLOCKS_PER_SEC; |
1074 |
return (int32) clock(); |
1075 |
#else |
1076 |
struct tms timeBuffer; |
1077 |
TIME_RATE = 60; |
1078 |
times(&timeBuffer); |
1079 |
return timeBuffer.tms_utime + timeBuffer.tms_stime; |
1080 |
#endif |
1081 |
} |
1082 |
|
1083 |
|
1084 |
void |
1085 |
CalcDistortion(current, y, x) |
1086 |
MpegFrame *current; |
1087 |
int y,x; |
1088 |
{ |
1089 |
|
1090 |
int qscale, distort=0; |
1091 |
Block decblk; |
1092 |
FlatBlock fblk; |
1093 |
int datarate = 0; |
1094 |
|
1095 |
for (qscale = 1; qscale < 32; qscale ++) { |
1096 |
distort = 0; |
1097 |
datarate = 0; |
1098 |
Mpost_QuantZigBlock(dct[y][x], fblk, qscale, TRUE); |
1099 |
Mpost_UnQuantZigBlock(fblk, decblk, qscale, TRUE); |
1100 |
if (collect_distortion_detailed) datarate += CalcRLEHuffLength(fblk); |
1101 |
mpeg_jrevdct((int16 *)decblk); |
1102 |
distort += mse(current->y_blocks[y][x], decblk); |
1103 |
|
1104 |
Mpost_QuantZigBlock(dct[y][x+1], fblk, qscale, TRUE); |
1105 |
Mpost_UnQuantZigBlock(fblk, decblk, qscale, TRUE); |
1106 |
if (collect_distortion_detailed) datarate += CalcRLEHuffLength(fblk); |
1107 |
mpeg_jrevdct((int16 *)decblk); |
1108 |
distort += mse(current->y_blocks[y][x+1], decblk); |
1109 |
|
1110 |
Mpost_QuantZigBlock(dct[y+1][x], fblk, qscale, TRUE); |
1111 |
Mpost_UnQuantZigBlock(fblk, decblk, qscale, TRUE); |
1112 |
if (collect_distortion_detailed) datarate += CalcRLEHuffLength(fblk); |
1113 |
mpeg_jrevdct((int16 *)decblk); |
1114 |
distort += mse(current->y_blocks[y+1][x], decblk); |
1115 |
|
1116 |
Mpost_QuantZigBlock(dct[y+1][x+1], fblk, qscale, TRUE); |
1117 |
Mpost_UnQuantZigBlock(fblk, decblk, qscale, TRUE); |
1118 |
if (collect_distortion_detailed) datarate += CalcRLEHuffLength(fblk); |
1119 |
mpeg_jrevdct((int16 *)decblk); |
1120 |
distort += mse(current->y_blocks[y+1][x+1], decblk); |
1121 |
|
1122 |
Mpost_QuantZigBlock(dctb[y >> 1][x >> 1], fblk, qscale, TRUE); |
1123 |
Mpost_UnQuantZigBlock(fblk, decblk, qscale, TRUE); |
1124 |
if (collect_distortion_detailed) datarate += CalcRLEHuffLength(fblk); |
1125 |
mpeg_jrevdct((int16 *)decblk); |
1126 |
distort += mse(current->cb_blocks[y>>1][x>>1], decblk); |
1127 |
|
1128 |
Mpost_QuantZigBlock(dctr[y >> 1][x >> 1], fblk, qscale, TRUE); |
1129 |
Mpost_UnQuantZigBlock(fblk, decblk, qscale, TRUE); |
1130 |
if (collect_distortion_detailed) datarate += CalcRLEHuffLength(fblk); |
1131 |
mpeg_jrevdct((int16 *)decblk); |
1132 |
distort += mse(current->cr_blocks[y >> 1][x >> 1], decblk); |
1133 |
|
1134 |
if (!collect_distortion_detailed) { |
1135 |
fprintf(distortion_fp, "\t%d\n", distort); |
1136 |
} else if (collect_distortion_detailed == 1) { |
1137 |
fprintf(distortion_fp, "\t%d\t%d\n", distort, datarate); |
1138 |
} else { |
1139 |
fprintf(fp_table_rate[qscale-1], "%d\n", datarate); |
1140 |
fprintf(fp_table_dist[qscale-1], "%d\n", distort); |
1141 |
} |
1142 |
} |
1143 |
} |