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r999: maintainers added to README_en.
[cinelerra_cv/mob.git] / quicktime / fastjpg.c
bloba765a9774cb8b6b98616d977a75c866b5efd7f7a
1 #include "fastjpg.h"
2 #include "fastjpgmacro.h"
3
4 /* JPEG decoder from XAnim which ended up 10% slower than libjpeg */
5
6 /* JPEG MARKERS */
7 #define M_SOF0 0xc0
8 #define M_SOF1 0xc1
9 #define M_SOF2 0xc2
10 #define M_SOF3 0xc3
11 #define M_SOF5 0xc5
12 #define M_SOF6 0xc6
13 #define M_SOF7 0xc7
14 #define M_JPG 0xc8
15 #define M_SOF9 0xc9
16 #define M_SOF10 0xca
17 #define M_SOF11 0xcb
18 #define M_SOF13 0xcd
19 #define M_SOF14 0xce
20 #define M_SOF15 0xcf
21 #define M_DHT 0xc4
22 #define M_DAC 0xcc
23 #define M_RST0 0xd0
24 #define M_RST1 0xd1
25 #define M_RST2 0xd2
26 #define M_RST3 0xd3
27 #define M_RST4 0xd4
28 #define M_RST5 0xd5
29 #define M_RST6 0xd6
30 #define M_RST7 0xd7
31 #define M_SOI 0xd8
32 #define M_EOI 0xd9
33 #define M_SOS 0xda
34 #define M_DQT 0xdb
35 #define M_DNL 0xdc
36 #define M_DRI 0xdd
37 #define M_DHP 0xde
38 #define M_EXP 0xdf
39 #define M_APP0 0xe0
40 #define M_APP1 0xe1
41 #define M_APP2 0xe2
42 #define M_APP3 0xe3
43 #define M_APP4 0xe4
44 #define M_APP5 0xe5
45 #define M_APP6 0xe6
46 #define M_APP7 0xe7
47 #define M_APP8 0xe8
48 #define M_APP9 0xe9
49 #define M_APP10 0xea
50 #define M_APP11 0xeb
51 #define M_APP12 0xec
52 #define M_APP13 0xed
53 #define M_APP14 0xee
54 #define M_APP15 0xef
55 #define M_JPG0 0xf0
56 #define M_JPG13 0xfd
57 #define M_COM 0xfe
58 #define M_TEM 0x01
59 #define M_ERROR 0x100
60
61 static long JJ_ZAG[DCTSIZE2 + 16] =
62 {
63 0, 1, 8, 16, 9, 2, 3, 10,
64 17, 24, 32, 25, 18, 11, 4, 5,
65 12, 19, 26, 33, 40, 48, 41, 34,
66 27, 20, 13, 6, 7, 14, 21, 28,
67 35, 42, 49, 56, 57, 50, 43, 36,
68 29, 22, 15, 23, 30, 37, 44, 51,
69 58, 59, 52, 45, 38, 31, 39, 46,
70 53, 60, 61, 54, 47, 55, 62, 63,
71 0, 0, 0, 0, 0, 0, 0, 0, /* extra entries in case k>63 below */
72 0, 0, 0, 0, 0, 0, 0, 0
73 };
74
75 static char std_luminance_quant_tbl[64] = {
76 16, 11, 12, 14, 12, 10, 16, 14,
77 13, 14, 18, 17, 16, 19, 24, 40,
78 26, 24, 22, 22, 24, 49, 35, 37,
79 29, 40, 58, 51, 61, 60, 57, 51,
80 56, 55, 64, 72, 92, 78, 64, 68,
81 87, 69, 55, 56, 80, 109, 81, 87,
82 95, 98, 103, 104, 103, 62, 77, 113,
83 121, 112, 100, 120, 92, 101, 103, 99
84 };
85
86 static char std_chrominance_quant_tbl[64] = {
87 17, 18, 18, 24, 21, 24, 47, 26,
88 26, 47, 99, 66, 56, 66, 99, 99,
89 99, 99, 99, 99, 99, 99, 99, 99,
90 99, 99, 99, 99, 99, 99, 99, 99,
91 99, 99, 99, 99, 99, 99, 99, 99,
92 99, 99, 99, 99, 99, 99, 99, 99,
93 99, 99, 99, 99, 99, 99, 99, 99,
94 99, 99, 99, 99, 99, 99, 99, 99
95 };
96
97 int quicktime_fastjpg_skip(quicktime_jpeg_t *jpeg_info, long len)
98 {
99 if(len > jpeg_info->chunk_size)
100 jpeg_info->chunk += jpeg_info->chunk_size;
101 else
102 jpeg_info->chunk += len;
103
104 return 0;
105 }
106
107 int quicktime_fastjpg_readbyte(quicktime_jpeg_t *jpeg_info)
108 {
109 if(jpeg_info->chunk_size > 0)
110 {
111 jpeg_info->chunk_size--;
112 return *(jpeg_info->chunk++);
113 }
114 else
115 return 0;
116 }
117
118 int quicktime_fastjpg_readint16(quicktime_jpeg_t *jpeg_info)
119 {
120 if(jpeg_info->chunk_size > 1)
121 {
122 jpeg_info->chunk_size -= 2;
123 jpeg_info->chunk += 2;
124 return ((int)jpeg_info->chunk[-2] << 8) | (unsigned char)jpeg_info->chunk[-1];
125 }
126 else
127 return 0;
128 }
129
130 int quicktime_fastjpg_readint32(quicktime_jpeg_t *jpeg_info)
131 {
132 if(jpeg_info->chunk_size > 3)
133 {
134 jpeg_info->chunk_size -= 4;
135 return (((unsigned long)*(jpeg_info->chunk++) << 24) |
136 ((unsigned long)*(jpeg_info->chunk++) << 16) |
137 ((unsigned long)*(jpeg_info->chunk++) << 8) |
138 ((unsigned long)*(jpeg_info->chunk++)));
139 }
140 else
141 return 0;
142 }
143
144 int quicktime_fastjpg_eof(quicktime_jpeg_t *jpeg_info)
145 {
146 if(jpeg_info->chunk_size > 0)
147 return 0;
148 else
149 return 1;
150 }
151
152 int quicktime_fastjpg_init_limittable(quicktime_jpeg_t *jpeg_info)
153 {
154 unsigned char *table;
155 int i;
156
157 jpeg_info->jpg_samp_limit = (unsigned char *)malloc((5 * (MAXJSAMPLE + 1) + CENTERJSAMPLE));
158 jpeg_info->byte_limit = jpeg_info->jpg_samp_limit + MAXJSAMPLE + 1;
159
160 /* create negative subscripts for simple table */
161 table = jpeg_info->jpg_samp_limit + MAXJSAMPLE + 1;
162
163 /* First segment of "simple" table: limit[x] = 0 for x < 0 */
164 memset(table - (MAXJSAMPLE + 1), 0, (MAXJSAMPLE + 1));
165
166 /* Main part of "simple" table: limit[x] = x */
167 for(i = 0; i <= MAXJSAMPLE; i++) table[i] = (unsigned char)i;
168
169 /* Point to where post-IDCT table starts */
170 table += CENTERJSAMPLE;
171
172 /* End of simple table, rest of first half of post-IDCT table */
173
174 for(i = CENTERJSAMPLE; i < 2 * (MAXJSAMPLE + 1); i++) table[i] = MAXJSAMPLE;
175
176 /* Second half of post-IDCT table */
177 memset(table + (2 * (MAXJSAMPLE + 1)), 0, (2 * (MAXJSAMPLE + 1) - CENTERJSAMPLE));
178 memcpy(table + (4 * (MAXJSAMPLE + 1) - CENTERJSAMPLE),
179 (char*)(jpeg_info->jpg_samp_limit + (MAXJSAMPLE + 1)), CENTERJSAMPLE);
180 }
181
182 int quicktime_fastjpg_init_yuv(quicktime_jpeg_t *jpeg_info)
183 {
184 long i;
185 float t_ub, t_vr, t_ug, t_vg;
186 float t2_ub, t2_vr, t2_ug, t2_vg;
187
188 jpeg_info->yuvtabs.YUV_Y_tab = (long*)malloc(256 * sizeof(long));
189 jpeg_info->yuvtabs.YUV_UB_tab = (long*)malloc(256 * sizeof(long));
190 jpeg_info->yuvtabs.YUV_VR_tab = (long*)malloc(256 * sizeof(long));
191 jpeg_info->yuvtabs.YUV_UG_tab = (long*)malloc(256 * sizeof(long));
192 jpeg_info->yuvtabs.YUV_VG_tab = (long*)malloc(256 * sizeof(long));
193
194 t_ub = (1.77200 / 2.0) * (float)(1 << 6) + 0.5;
195 t_vr = (1.40200 / 2.0) * (float)(1 << 6) + 0.5;
196 t_ug = (0.34414 / 2.0) * (float)(1 << 6) + 0.5;
197 t_vg = (0.71414 / 2.0) * (float)(1 << 6) + 0.5;
198 t2_ub = (1.4 * 1.77200 / 2.0) * (float)(1 << 6) + 0.5;
199 t2_vr = (1.4 * 1.40200 / 2.0) * (float)(1 << 6) + 0.5;
200 t2_ug = (1.4 * 0.34414 / 2.0) * (float)(1 << 6) + 0.5;
201 t2_vg = (1.4 * 0.71414 / 2.0) * (float)(1 << 6) + 0.5;
202
203 for(i = 0; i < 256; i++)
204 {
205 float x = (float)(2 * i - 255);
206
207 jpeg_info->yuvtabs.YUV_UB_tab[i] = (long)(( t_ub * x) + (1 << 5));
208 jpeg_info->yuvtabs.YUV_VR_tab[i] = (long)(( t_vr * x) + (1 << 5));
209 jpeg_info->yuvtabs.YUV_UG_tab[i] = (long)((-t_ug * x));
210 jpeg_info->yuvtabs.YUV_VG_tab[i] = (long)((-t_vg * x) + (1 << 5));
211 jpeg_info->yuvtabs.YUV_Y_tab[i] = (long)((i << 6) | (i >> 2));
212 }
213 return 0;
214 }
215
216 int quicktime_fastjpg_init(quicktime_jpeg_t *jpeg_info)
217 {
218 int i;
219 for(i = 0; i < TOTAL_QUANT_TBLS; i++) jpeg_info->quant_tables[i] = 0;
220 quicktime_fastjpg_init_limittable(jpeg_info);
221 jpeg_info->mjpg_kludge = 0;
222 jpeg_info->jpg_std_DHT_flag = 0;
223 jpeg_info->mjpa_info.valid = 0;
224 jpeg_info->yuvbufs.allocated = 0;
225 jpeg_info->yuvbufs.ybuf = 0;
226 jpeg_info->yuvbufs.ubuf = 0;
227 jpeg_info->yuvbufs.vbuf = 0;
228 quicktime_fastjpg_init_yuv(jpeg_info);
229 return 0;
230 }
231
232 int quicktime_fastjpg_deleteMCU(quicktime_jpeg_t *jpeg_info)
233 {
234 if(jpeg_info->yuvbufs.allocated)
235 {
236 free(jpeg_info->yuvbufs.ybuf);
237 free(jpeg_info->yuvbufs.ubuf);
238 free(jpeg_info->yuvbufs.vbuf);
239 }
240 jpeg_info->yuvbufs.ybuf = 0;
241 jpeg_info->yuvbufs.ubuf = 0;
242 jpeg_info->yuvbufs.vbuf = 0;
243
244 return 0;
245 }
246
247
248 int quicktime_fastjpg_delete(quicktime_jpeg_t *jpeg_info)
249 {
250 int i;
251 for(i = 0; i < TOTAL_QUANT_TBLS; i++)
252 if(jpeg_info->quant_tables[i])
253 {
254 free(jpeg_info->quant_tables[i]);
255 jpeg_info->quant_tables[i] = 0;
256 }
257
258 if(jpeg_info->jpg_samp_limit)
259 {
260 free(jpeg_info->jpg_samp_limit);
261 jpeg_info->jpg_samp_limit = 0;
262 }
263
264 quicktime_fastjpg_deleteMCU(jpeg_info);
265
266 free(jpeg_info->yuvtabs.YUV_Y_tab);
267 free(jpeg_info->yuvtabs.YUV_UB_tab);
268 free(jpeg_info->yuvtabs.YUV_VR_tab);
269 free(jpeg_info->yuvtabs.YUV_UG_tab);
270 free(jpeg_info->yuvtabs.YUV_VG_tab);
271 }
272
273 int quicktime_fastjpg_resethuffman(quicktime_jpeg_t *jpeg_info)
274 {
275 jpeg_info->jpg_comps[0].dc = 0;
276 jpeg_info->jpg_comps[1].dc = 0;
277 jpeg_info->jpg_comps[2].dc = 0;
278 jpeg_info->jpg_h_bbuf = 0; /* clear huffman bit buffer */
279 jpeg_info->jpg_h_bnum = 0;
280 }
281
282 int quicktime_fastjpg_buildhuffman(quicktime_jpeg_t *jpeg_info,
283 quicktime_jpeg_huffman *htable,
284 unsigned char *hbits,
285 unsigned char *hvals)
286 {
287 unsigned long clen, num_syms, p, i, si, code, lookbits;
288 unsigned long l, ctr;
289 unsigned char huffsize[257];
290 unsigned long huffcode[257];
291
292 /*** generate code lengths for each symbol */
293 num_syms = 0;
294 for(clen = 1; clen <= 16; clen++)
295 {
296 for(i = 1; i <= (unsigned long)(hbits[clen]); i++)
297 huffsize[num_syms++] = (unsigned char)(clen);
298 }
299 huffsize[num_syms] = 0;
300
301 /*** generate codes */
302 code = 0;
303 si = huffsize[0];
304 p = 0;
305 while(huffsize[p])
306 {
307 while(((unsigned long)huffsize[p]) == si)
308 {
309 huffcode[p++] = code;
310 code++;
311 }
312 code <<= 1;
313 si++;
314 }
315
316 /* Init mincode/maxcode/valptr arrays */
317 p = 0;
318 for(l = 1; l <= 16; l++)
319 {
320 if (htable->bits[l])
321 {
322 htable->valptr[l] = p; /* huffval[] index of 1st symbol of code length l */
323 htable->mincode[l] = huffcode[p]; /* minimum code of length l */
324 p += (unsigned long)(htable->bits[l]);
325 htable->maxcode[l] = huffcode[p-1]; /* maximum code of length l */
326 }
327 else
328 {
329 htable->valptr[l] = 0; /* not needed */
330 htable->mincode[l] = 0; /* not needed */
331 htable->maxcode[l] = 0; /* WAS -1; */ /* -1 if no codes of this length */
332 }
333 }
334 htable->maxcode[17] = 0xFFFFFL; /* ensures huff_DECODE terminates */
335
336
337 /* Init huffman cache */
338 memset((char *)htable->cache, 0, ((1 << HUFF_LOOKAHEAD) * sizeof(unsigned int16_t)));
339 p = 0;
340 for (l = 1; l <= HUFF_LOOKAHEAD; l++)
341 {
342 for (i = 1; i <= (unsigned long) htable->bits[l]; i++, p++)
343 {
344 int16_t the_code = (unsigned int16_t)((l << 8) | htable->vals[p]);
345
346 /* l = current code's length, p = its index in huffcode[] & huffval[]. */
347 /* Generate left-justified code followed by all possible bit sequences */
348
349 lookbits = huffcode[p] << (HUFF_LOOKAHEAD - l);
350 for(ctr = 1 << (HUFF_LOOKAHEAD - l); ctr > 0; ctr--)
351 {
352 htable->cache[lookbits] = the_code;
353 lookbits++;
354 }
355 }
356 }
357 }
358
359 int quicktime_fastjpg_buildstdhuffman(quicktime_jpeg_t *jpeg_info)
360 {
361 long ttt, len;
362 quicktime_jpeg_huffman *htable;
363 unsigned char *hbits, *Sbits;
364 unsigned char *hvals, *Svals;
365
366 static unsigned char dc_luminance_bits[] =
367 { /* 0-base */ 0, 0, 1, 5, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0 };
368 static unsigned char dc_luminance_vals[] =
369 { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11 };
370
371 static unsigned char dc_chrominance_bits[] =
372 { /* 0-base */ 0, 0, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0 };
373 static unsigned char dc_chrominance_vals[] =
374 { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11 };
375
376 static unsigned char ac_luminance_bits[] =
377 { /* 0-base */ 0, 0, 2, 1, 3, 3, 2, 4, 3, 5, 5, 4, 4, 0, 0, 1, 0x7d };
378 static unsigned char ac_luminance_vals[] =
379 { 0x01, 0x02, 0x03, 0x00, 0x04, 0x11, 0x05, 0x12,
380 0x21, 0x31, 0x41, 0x06, 0x13, 0x51, 0x61, 0x07,
381 0x22, 0x71, 0x14, 0x32, 0x81, 0x91, 0xa1, 0x08,
382 0x23, 0x42, 0xb1, 0xc1, 0x15, 0x52, 0xd1, 0xf0,
383 0x24, 0x33, 0x62, 0x72, 0x82, 0x09, 0x0a, 0x16,
384 0x17, 0x18, 0x19, 0x1a, 0x25, 0x26, 0x27, 0x28,
385 0x29, 0x2a, 0x34, 0x35, 0x36, 0x37, 0x38, 0x39,
386 0x3a, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48, 0x49,
387 0x4a, 0x53, 0x54, 0x55, 0x56, 0x57, 0x58, 0x59,
388 0x5a, 0x63, 0x64, 0x65, 0x66, 0x67, 0x68, 0x69,
389 0x6a, 0x73, 0x74, 0x75, 0x76, 0x77, 0x78, 0x79,
390 0x7a, 0x83, 0x84, 0x85, 0x86, 0x87, 0x88, 0x89,
391 0x8a, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97, 0x98,
392 0x99, 0x9a, 0xa2, 0xa3, 0xa4, 0xa5, 0xa6, 0xa7,
393 0xa8, 0xa9, 0xaa, 0xb2, 0xb3, 0xb4, 0xb5, 0xb6,
394 0xb7, 0xb8, 0xb9, 0xba, 0xc2, 0xc3, 0xc4, 0xc5,
395 0xc6, 0xc7, 0xc8, 0xc9, 0xca, 0xd2, 0xd3, 0xd4,
396 0xd5, 0xd6, 0xd7, 0xd8, 0xd9, 0xda, 0xe1, 0xe2,
397 0xe3, 0xe4, 0xe5, 0xe6, 0xe7, 0xe8, 0xe9, 0xea,
398 0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7, 0xf8,
399 0xf9, 0xfa };
400
401 static unsigned char ac_chrominance_bits[] =
402 { /* 0-base */ 0, 0, 2, 1, 2, 4, 4, 3, 4, 7, 5, 4, 4, 0, 1, 2, 0x77 };
403 static unsigned char ac_chrominance_vals[] =
404 { 0x00, 0x01, 0x02, 0x03, 0x11, 0x04, 0x05, 0x21,
405 0x31, 0x06, 0x12, 0x41, 0x51, 0x07, 0x61, 0x71,
406 0x13, 0x22, 0x32, 0x81, 0x08, 0x14, 0x42, 0x91,
407 0xa1, 0xb1, 0xc1, 0x09, 0x23, 0x33, 0x52, 0xf0,
408 0x15, 0x62, 0x72, 0xd1, 0x0a, 0x16, 0x24, 0x34,
409 0xe1, 0x25, 0xf1, 0x17, 0x18, 0x19, 0x1a, 0x26,
410 0x27, 0x28, 0x29, 0x2a, 0x35, 0x36, 0x37, 0x38,
411 0x39, 0x3a, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48,
412 0x49, 0x4a, 0x53, 0x54, 0x55, 0x56, 0x57, 0x58,
413 0x59, 0x5a, 0x63, 0x64, 0x65, 0x66, 0x67, 0x68,
414 0x69, 0x6a, 0x73, 0x74, 0x75, 0x76, 0x77, 0x78,
415 0x79, 0x7a, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87,
416 0x88, 0x89, 0x8a, 0x92, 0x93, 0x94, 0x95, 0x96,
417 0x97, 0x98, 0x99, 0x9a, 0xa2, 0xa3, 0xa4, 0xa5,
418 0xa6, 0xa7, 0xa8, 0xa9, 0xaa, 0xb2, 0xb3, 0xb4,
419 0xb5, 0xb6, 0xb7, 0xb8, 0xb9, 0xba, 0xc2, 0xc3,
420 0xc4, 0xc5, 0xc6, 0xc7, 0xc8, 0xc9, 0xca, 0xd2,
421 0xd3, 0xd4, 0xd5, 0xd6, 0xd7, 0xd8, 0xd9, 0xda,
422 0xe2, 0xe3, 0xe4, 0xe5, 0xe6, 0xe7, 0xe8, 0xe9,
423 0xea, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7, 0xf8,
424 0xf9, 0xfa };
425
426 for(ttt = 0; ttt < 4; ttt++)
427 {
428 unsigned long index = ttt & 1;
429 unsigned long i, count;
430
431 if (ttt <= 1) /* DC tables */
432 {
433 htable = &(jpeg_info->jpg_dc_huff[index]);
434 hbits = jpeg_info->jpg_dc_huff[index].bits;
435 hvals = jpeg_info->jpg_dc_huff[index].vals;
436 if(index == 0)
437 {
438 Sbits = dc_luminance_bits;
439 Svals = dc_luminance_vals;
440 }
441 else
442 {
443 Sbits = dc_chrominance_bits;
444 Svals = dc_chrominance_vals;
445 }
446 }
447 else /* AC tables */
448 {
449 htable = &(jpeg_info->jpg_ac_huff[index]);
450 hbits = jpeg_info->jpg_ac_huff[index].bits;
451 hvals = jpeg_info->jpg_ac_huff[index].vals;
452 if(index == 0)
453 {
454 Sbits = ac_luminance_bits;
455 Svals = ac_luminance_vals;
456 }
457 else
458 {
459 Sbits = ac_chrominance_bits;
460 Svals = ac_chrominance_vals;
461 }
462 }
463 hbits[0] = 0;
464 count = 0;
465 for(i = 1; i <= 16; i++)
466 {
467 hbits[i] = Sbits[i];
468 count += hbits[i];
469 }
470 len -= 17;
471 if(count > 256)
472 {
473 printf("quicktime_fastjpg_buildstdhuffman: STD DHT bad count %d\n", count);
474 return 1;
475 }
476
477 for(i = 0; i < count; i++) hvals[i] = Svals[i];
478 len -= count;
479
480 quicktime_fastjpg_buildhuffman(jpeg_info,
481 htable,
482 hbits,
483 hvals);
484 }
485 jpeg_info->jpg_std_DHT_flag = 1;
486 return 0;
487 }
488
489 int quicktime_fastjpg_buildstdDQT(quicktime_jpeg_t *jpeg_info, long scale)
490 {
491 long i, tbl_num;
492 long *quant_table;
493 unsigned int *table;
494 unsigned int std_luminance_quant_tbl[DCTSIZE2] =
495 {
496 16, 11, 10, 16, 24, 40, 51, 61,
497 12, 12, 14, 19, 26, 58, 60, 55,
498 14, 13, 16, 24, 40, 57, 69, 56,
499 14, 17, 22, 29, 51, 87, 80, 62,
500 18, 22, 37, 56, 68, 109, 103, 77,
501 24, 35, 55, 64, 81, 104, 113, 92,
502 49, 64, 78, 87, 103, 121, 120, 101,
503 72, 92, 95, 98, 112, 100, 103, 99
504 };
505 unsigned int std_chrominance_quant_tbl[DCTSIZE2] =
506 {
507 17, 18, 24, 47, 99, 99, 99, 99,
508 18, 21, 26, 66, 99, 99, 99, 99,
509 24, 26, 56, 99, 99, 99, 99, 99,
510 47, 66, 99, 99, 99, 99, 99, 99,
511 99, 99, 99, 99, 99, 99, 99, 99,
512 99, 99, 99, 99, 99, 99, 99, 99,
513 99, 99, 99, 99, 99, 99, 99, 99,
514 99, 99, 99, 99, 99, 99, 99, 99
515 };
516
517 tbl_num = 0;
518 for(tbl_num = 0; tbl_num <= 1; tbl_num++)
519 {
520 if(jpeg_info->quant_tables[tbl_num] == 0)
521 {
522 jpeg_info->quant_tables[tbl_num] = (long*)malloc(64 * sizeof(long));
523 }
524
525 if (tbl_num == 0)
526 table = std_luminance_quant_tbl;
527 else
528 table = std_chrominance_quant_tbl;
529 quant_table = jpeg_info->quant_tables[tbl_num];
530
531 for (i = 0; i < DCTSIZE2; i++)
532 {
533 long tmp;
534 tmp = ((long)table[i] * scale + 50L) / 100L;
535 if(tmp <= 0) tmp = 1;
536 if(tmp > 255) tmp = 255;
537 quant_table[i] = (long)tmp;
538 }
539 }
540 return 0;
541 }
542
543 int quicktime_fastjpg_get_marker(quicktime_jpeg_t *jpeg_info)
544 {
545 int c, done = 0; /* 1 - completion 2 - error */
546
547 while(!done)
548 {
549 c = quicktime_fastjpg_readbyte(jpeg_info);
550 /* look for FF */
551 while(c != 0xFF)
552 {
553 if(quicktime_fastjpg_eof(jpeg_info)) done = 2;
554 c = quicktime_fastjpg_readbyte(jpeg_info);
555 }
556
557 /* now we've got 1 0xFF, keep reading until not 0xFF */
558 do
559 {
560 if(quicktime_fastjpg_eof(jpeg_info)) done = 2;
561 c = quicktime_fastjpg_readbyte(jpeg_info);
562 }while (c == 0xFF);
563
564 /* not a 00 or FF */
565 if (c != 0) done = 1;
566 }
567
568 if(done == 1)
569 return c;
570 else
571 return 0;
572 }
573
574 int quicktime_fastjpg_skip_marker(quicktime_jpeg_t *jpeg_info)
575 {
576 long len, tmp;
577 len = quicktime_fastjpg_readint16(jpeg_info);
578 len -= 2;
579 if(len <= 0) return 1;
580 if(quicktime_fastjpg_eof(jpeg_info)) return 1;
581 while(len--) quicktime_fastjpg_readbyte(jpeg_info);
582 return 0;
583 }
584
585 int quicktime_fastjpg_check_for_marker(quicktime_jpeg_t *jpeg_info)
586 {
587 if(jpeg_info->marker) return(jpeg_info->marker);
588 if(jpeg_info->chunk_size < 2) return(0);
589 if((jpeg_info->chunk[0] == 0xff) && (jpeg_info->chunk[1] != 0x00))
590 {
591 jpeg_info->marker = jpeg_info->chunk[1];
592 {
593 if(jpeg_info->jpg_h_bnum)
594 {
595 printf("quicktime_fastjpg_check_for_marker: check marker positive - lost %d bits\n",
596 jpeg_info->jpg_h_bnum);
597 }
598 }
599 jpeg_info->jpg_h_bnum = 0;
600 jpeg_info->jpg_h_bbuf = 0;
601 jpeg_info->chunk += 2;
602 jpeg_info->chunk_size -= 2;
603 }
604 return(jpeg_info->marker);
605 }
606
607 int quicktime_fastjpg_readSOI(quicktime_jpeg_t *jpeg_info)
608 {
609 jpeg_info->jpg_rst_interval = 0;
610 return 0;
611 }
612
613 int quicktime_fastjpg_readSOF(quicktime_jpeg_t *jpeg_info)
614 {
615 int result = 0;
616 int len, i, c;
617 quicktime_jpeg_comp_header *comp;
618
619 len = quicktime_fastjpg_readint16(jpeg_info);
620 if(jpeg_info->mjpg_kludge)
621 len -= 6;
622 else
623 len -= 8;
624
625 jpeg_info->jpg_dprec = quicktime_fastjpg_readbyte(jpeg_info);
626 jpeg_info->jpg_height = quicktime_fastjpg_readint16(jpeg_info);
627 jpeg_info->jpg_width = quicktime_fastjpg_readint16(jpeg_info);
628 jpeg_info->jpg_num_comps = quicktime_fastjpg_readbyte(jpeg_info);
629
630 for(i = 0; i < jpeg_info->jpg_num_comps; i++)
631 {
632 if(i > MAX_COMPS)
633 comp = &(jpeg_info->jpg_comps[DUMMY_COMP]);
634 else
635 comp = &(jpeg_info->jpg_comps[i]);
636
637 comp->id = quicktime_fastjpg_readbyte(jpeg_info);
638 comp->hvsample = quicktime_fastjpg_readbyte(jpeg_info);
639 comp->qtbl_num = quicktime_fastjpg_readbyte(jpeg_info);
640 }
641 return(quicktime_fastjpg_eof(jpeg_info));
642 }
643
644 int quicktime_fastjpg_readSOS(quicktime_jpeg_t *jpeg_info)
645 {
646 int len, i, j;
647 int comp_id, htbl_num;
648 int jpg_Ss, jpg_Se, jpg_AhAl;
649
650 len = quicktime_fastjpg_readint16(jpeg_info);
651 jpeg_info->jpg_comps_in_scan = quicktime_fastjpg_readbyte(jpeg_info);
652
653 for(i = 0; i < jpeg_info->jpg_comps_in_scan; i++)
654 {
655 quicktime_jpeg_comp_header *comp = 0;
656 comp_id = quicktime_fastjpg_readbyte(jpeg_info);
657 for(j = 0; j < jpeg_info->jpg_num_comps; )
658 {
659 comp = &(jpeg_info->jpg_comps[j]);
660 if(comp->id == comp_id) break;
661 j++;
662 }
663
664 if (j > jpeg_info->jpg_num_comps)
665 {
666 printf("quicktime_fastjpg_readSOS: bad id %x", comp_id);
667 return 1;
668 }
669
670 htbl_num = quicktime_fastjpg_readbyte(jpeg_info);
671 comp->dc_htbl_num = (htbl_num >> 4) & 0x0f;
672 comp->ac_htbl_num = (htbl_num ) & 0x0f;
673 }
674 jpg_Ss = quicktime_fastjpg_readbyte(jpeg_info);
675 jpg_Se = quicktime_fastjpg_readbyte(jpeg_info);
676 jpg_AhAl = quicktime_fastjpg_readbyte(jpeg_info);
677 return(quicktime_fastjpg_eof(jpeg_info));
678 }
679
680 int quicktime_fastjpg_readDHT(quicktime_jpeg_t *jpeg_info)
681 {
682 int len, i, index, count;
683 unsigned long result = 1;
684 quicktime_jpeg_huffman *htable;
685 unsigned char *hbits;
686 unsigned char *hvals;
687
688 jpeg_info->jpg_std_DHT_flag = 0;
689 len = quicktime_fastjpg_readint16(jpeg_info);
690
691 if(jpeg_info->mjpg_kludge) len += 2;
692
693 len -= 2;
694
695 if(quicktime_fastjpg_eof(jpeg_info)) return 1;
696
697 while(len > 0)
698 {
699 index = quicktime_fastjpg_readbyte(jpeg_info);
700 len--;
701 /* Test indexes */
702 if (index & 0x10) /* AC Table */
703 {
704 index &= 0x0f;
705 if (index >= TOTAL_HUFF_TBLS) break;
706 htable = &(jpeg_info->jpg_ac_huff[index]);
707 hbits = jpeg_info->jpg_ac_huff[index].bits;
708 hvals = jpeg_info->jpg_ac_huff[index].vals;
709 }
710 else /* DC Table */
711 {
712 index &= 0x0f;
713 if (index >= TOTAL_HUFF_TBLS) break;
714 htable = &(jpeg_info->jpg_dc_huff[index]);
715 hbits = jpeg_info->jpg_dc_huff[index].bits;
716 hvals = jpeg_info->jpg_dc_huff[index].vals;
717 }
718
719 hbits[0] = 0;
720 count = 0;
721
722 if(len < 16) break;
723 for (i = 1; i <= 16; i++)
724 {
725 hbits[i] = quicktime_fastjpg_readbyte(jpeg_info);
726 count += hbits[i];
727 }
728 len -= 16;
729
730 if(count > 256)
731 {
732 printf("quicktime_fastjpg_readDHT: DHT bad count %d using default.\n", count);
733 break;
734 }
735
736 if(len < count)
737 {
738 printf("quicktime_fastjpg_readDHT: DHT count(%d) > len(%d).\n", count, len);
739 break;
740 }
741
742 for(i = 0; i < count; i++) hvals[i] = quicktime_fastjpg_readbyte(jpeg_info);
743 len -= count;
744
745 quicktime_fastjpg_buildhuffman(jpeg_info, htable, hbits, hvals);
746 result = 0;
747 }
748
749 if(result)
750 {
751 /* Something is roached, but what the heck, try default DHT instead */
752 while(len > 0)
753 {
754 len--;
755 quicktime_fastjpg_readbyte(jpeg_info);
756 }
757 quicktime_fastjpg_buildstdhuffman(jpeg_info);
758 result = 0;
759 }
760
761 return result;
762 }
763
764 int quicktime_fastjpg_readDQT(quicktime_jpeg_t *jpeg_info)
765 {
766 long len;
767 len = quicktime_fastjpg_readint16(jpeg_info);
768 if(!jpeg_info->mjpg_kludge) len -= 2;
769
770 while(len > 0)
771 {
772 long i, tbl_num, prec;
773 long *quant_table;
774
775 tbl_num = quicktime_fastjpg_readbyte(jpeg_info);
776 len -= 1;
777
778 prec = (tbl_num >> 4) & 0x0f;
779 prec = (prec)?(2 * DCTSIZE2) : (DCTSIZE2); /* 128 or 64 */
780 tbl_num &= 0x0f;
781 if (tbl_num > 4)
782 {
783 printf("quicktime_fastjpg_readDQT: bad DQT tnum %x\n", tbl_num);
784 return 1;
785 }
786
787 if(jpeg_info->quant_tables[tbl_num] == 0)
788 {
789 jpeg_info->quant_tables[tbl_num] = (long *)malloc(64 * sizeof(long));
790 }
791 len -= prec;
792
793 if(quicktime_fastjpg_eof(jpeg_info)) return 1;
794 quant_table = jpeg_info->quant_tables[tbl_num];
795 if(prec == 128)
796 {
797 unsigned long tmp;
798 for(i = 0; i < DCTSIZE2; i++)
799 {
800 tmp = quicktime_fastjpg_readint16(jpeg_info);
801 quant_table[JJ_ZAG[i]] = (long)tmp;
802 }
803 }
804 else
805 {
806 unsigned long tmp;
807 for(i = 0; i < DCTSIZE2; i++)
808 {
809 tmp = quicktime_fastjpg_readbyte(jpeg_info);
810 quant_table[JJ_ZAG[i]] = (long)tmp;
811 }
812 }
813 }
814 return 0;
815 }
816
817 int quicktime_fastjpg_readAPPX(quicktime_jpeg_t *jpeg_info)
818 {
819 long len;
820 len = quicktime_fastjpg_readint32(jpeg_info);
821 len -= 2;
822 if(len > 4)
823 {
824 unsigned long first;
825 first = quicktime_fastjpg_readint32(jpeg_info);
826 len -= 4;
827 /* if (first == 0x41564931) /* AVI1 */ */
828 /* { */
829 /* int interleave; */
830 /* interleave = quicktime_fastjpg_readbyte(jpeg_info); */
831 /* len--; */
832 /* avi_jpeg_info.valid = 1; */
833 /* avi_jpeg_info.ileave = interleave; */
834 /* } */
835 /* else */
836 if(len > (0x28 - 4)) /* Maybe APPLE MJPEG A */
837 {
838 unsigned long jid;
839 jid = quicktime_fastjpg_readint32(jpeg_info);
840 len -= 4;
841 if(jid == JPEG_APP1_MJPA)
842 {
843 jpeg_info->mjpa_info.valid = 1;
844 jpeg_info->mjpa_info.field_sz = quicktime_fastjpg_readint32(jpeg_info);
845 jpeg_info->mjpa_info.pad_field_sz = quicktime_fastjpg_readint32(jpeg_info);
846 jpeg_info->mjpa_info.next_off = quicktime_fastjpg_readint32(jpeg_info);
847 jpeg_info->mjpa_info.quant_off = quicktime_fastjpg_readint32(jpeg_info);
848 jpeg_info->mjpa_info.huff_off = quicktime_fastjpg_readint32(jpeg_info);
849 jpeg_info->mjpa_info.image_off = quicktime_fastjpg_readint32(jpeg_info);
850 jpeg_info->mjpa_info.scan_off = quicktime_fastjpg_readint32(jpeg_info);
851 jpeg_info->mjpa_info.data_off = quicktime_fastjpg_readint32(jpeg_info);
852 len -= 32;
853 }
854 }
855 }
856 if(len) quicktime_fastjpg_skip(jpeg_info, len);
857 return 0;
858 }
859
860 int quicktime_fastjpg_readDRI(quicktime_jpeg_t *jpeg_info)
861 {
862 long len;
863 len = quicktime_fastjpg_readint16(jpeg_info);
864 jpeg_info->jpg_rst_interval = quicktime_fastjpg_readint16(jpeg_info);
865 return 0;
866
867 }
868
869 int quicktime_fastjpg_readEOI(quicktime_jpeg_t *jpeg_info)
870 {
871 while(jpeg_info->marker = quicktime_fastjpg_get_marker(jpeg_info))
872 {
873 if(jpeg_info->marker == M_EOI)
874 {
875 jpeg_info->jpg_saw_EOI = 1;
876 return 1;
877 }
878 }
879 return 0;
880 }
881
882
883
884
885 int quicktime_fastjpg_read_markers(quicktime_jpeg_t *jpeg_info)
886 {
887 int done = 0; /* 1 = completion 2 = error */
888
889 while(!done)
890 {
891 if(!(jpeg_info->marker = quicktime_fastjpg_get_marker(jpeg_info)))
892 done = 2;
893 else
894 {
895 /*printf("quicktime_fastjpg_read_markers %x\n", jpeg_info->marker); */
896 switch(jpeg_info->marker)
897 {
898 case M_SOI:
899 if(quicktime_fastjpg_readSOI(jpeg_info)) done = 2;
900 else
901 jpeg_info->jpg_saw_SOI = 1;
902 break;
903
904 case M_SOF0:
905 case M_SOF1:
906 case M_SOF2:
907 if(quicktime_fastjpg_readSOF(jpeg_info)) done = 2;
908 else
909 jpeg_info->jpg_saw_SOF = 1;
910 break;
911
912 /* Not yet supported */
913 case M_SOF3:
914 case M_SOF5:
915 case M_SOF6:
916 case M_SOF7:
917 case M_SOF9:
918 case M_SOF10:
919 case M_SOF11:
920 case M_SOF13:
921 case M_SOF14:
922 case M_SOF15:
923 done = 2;
924 break;
925
926 case M_SOS:
927 if(quicktime_fastjpg_readSOS(jpeg_info)) done = 2;
928 else
929 {
930 jpeg_info->jpg_saw_SOS = 1;
931 jpeg_info->jpg_nxt_rst_num = 0;
932 done = 1;
933 }
934 break;
935
936 case M_DHT:
937 if(quicktime_fastjpg_readDHT(jpeg_info)) done = 2;
938 else
939 jpeg_info->jpg_saw_DHT = 1;
940 break;
941
942 case M_DQT:
943 if(quicktime_fastjpg_readDQT(jpeg_info)) done = 2;
944 else
945 jpeg_info->jpg_saw_DQT = 1;
946 break;
947
948 case M_DRI:
949 if(quicktime_fastjpg_readDRI(jpeg_info)) done = 2;
950 break;
951
952 case M_COM:
953 {
954 /* Comment */
955 int len;
956 len = quicktime_fastjpg_readint16(jpeg_info);
957 len -= 2;
958
959 while(len > 0)
960 {
961 quicktime_fastjpg_readbyte(jpeg_info); len--;
962 }
963 }
964 break;
965
966 case M_APP0:
967 case M_APP1:
968 if(quicktime_fastjpg_readAPPX(jpeg_info)) done = 2;
969 break;
970
971 case M_EOI:
972 printf("quicktime_fastjpg_read_markers: reached EOI without data\n");
973 done = 2;
974 break;
975
976 case M_RST0: /* these are all parameterless */
977 case M_RST1:
978 case M_RST2:
979 case M_RST3:
980 case M_RST4:
981 case M_RST5:
982 case M_RST6:
983 case M_RST7:
984 case M_TEM:
985 break;
986
987 default:
988 printf("quicktime_fastjpg_read_markers: unknown marker %x\n", jpeg_info->marker);
989 if(quicktime_fastjpg_skip_marker(jpeg_info)) done = 2;
990 break;
991 } /* end of switch */
992 }
993 }
994 if(done == 2) return 1; else return 0;
995 }
996
997 int quicktime_fastjpg_initMCU(quicktime_jpeg_t *jpeg_info,
998 int width,
999 int height,
1000 int full_flag)
1001 {
1002 int twidth = (width + 15) / 16;
1003 int theight = (height + 15) / 16;
1004 if(theight & 1) theight++;
1005
1006 if(full_flag)
1007 twidth *= (theight << 2);
1008 else
1009 twidth <<= 2; /* four dct's deep */
1010
1011 if(!jpeg_info->yuvbufs.allocated)
1012 {
1013 jpeg_info->yuvbufs.allocated = 1;
1014 jpeg_info->yuvbufs.ybuf = (unsigned char*)malloc(twidth * DCTSIZE2);
1015 jpeg_info->yuvbufs.ubuf = (unsigned char*)malloc(twidth * DCTSIZE2);
1016 jpeg_info->yuvbufs.vbuf = (unsigned char*)malloc(twidth * DCTSIZE2);
1017 }
1018 }
1019
1020 int quicktime_fastjpg_skip_to_next_rst(quicktime_jpeg_t *jpeg_info)
1021 {
1022 unsigned long d, last_ff = 0;
1023 jpeg_info->jpg_h_bnum = 0;
1024 jpeg_info->jpg_h_bbuf = 0;
1025 while(jpeg_info->chunk_size)
1026 {
1027 d = *(jpeg_info->chunk++);
1028 jpeg_info->chunk_size--;
1029 if(last_ff)
1030 {
1031 if((d != 0) && (d != 0xff)) return d;
1032 }
1033 last_ff = (d == 0xff) ? 1 : 0;
1034 }
1035 return M_EOI;
1036 }
1037
1038 /* clears dctbuf to zeroes.
1039 * fills from huffman encode stream
1040 */
1041 int quicktime_fastjpg_huffparse(quicktime_jpeg_t *jpeg_info,
1042 quicktime_jpeg_comp_header *comp,
1043 int16_t *dct_buf,
1044 unsigned long *qtab,
1045 unsigned char *OBuf)
1046 {
1047 unsigned long tmp_, tmp__, hcode_, t1_, shift_, minbits_;
1048 long i, dcval, level;
1049 unsigned long size, run, tmp, coeff;
1050 quicktime_jpeg_huffman *huff_hdr = &(jpeg_info->jpg_dc_huff[comp->dc_htbl_num]);
1051 unsigned int16_t *huff_tbl = huff_hdr->cache;
1052 unsigned char *rnglimit = jpeg_info->jpg_samp_limit + (CENTERJSAMPLE + MAXJSAMPLE + 1);
1053 unsigned long c_cnt, pos = 0;
1054
1055 QUICKTIME_FASTJPG_HUFF_DECODE(huff_hdr, huff_tbl, jpeg_info->jpg_h_bnum, jpeg_info->jpg_h_bbuf, size);
1056
1057 if(size)
1058 {
1059 unsigned long bits;
1060 QUICKTIME_FASTJPG_GET_BITS(size, jpeg_info->jpg_h_bnum, jpeg_info->jpg_h_bbuf, bits);
1061 dcval = QUICKTIME_FASTJPG_HUFF_EXTEND(bits, size);
1062 comp->dc += dcval;
1063 }
1064 dcval = comp->dc;
1065
1066 /* clear rest of dct buffer */
1067 memset((char *)(dct_buf), 0, (DCTSIZE2 * sizeof(int16_t)));
1068 dcval *= (long)qtab[0];
1069 dct_buf[0] = (int16_t)dcval;
1070 c_cnt = 0;
1071
1072 huff_hdr = &(jpeg_info->jpg_ac_huff[comp->ac_htbl_num]);
1073 huff_tbl = huff_hdr->cache;
1074 for(i = 1; i < 64; )
1075 {
1076 QUICKTIME_FASTJPG_HUFF_DECODE(huff_hdr, huff_tbl, jpeg_info->jpg_h_bnum, jpeg_info->jpg_h_bbuf, tmp);
1077 size = tmp & 0x0f;
1078 run = (tmp >> 4) & 0x0f; /* leading zeroes */
1079
1080 if(size)
1081 {
1082 i += run; /* skip zeroes */
1083 QUICKTIME_FASTJPG_GET_BITS(size, jpeg_info->jpg_h_bnum, jpeg_info->jpg_h_bbuf, level);
1084 coeff = (long)QUICKTIME_FASTJPG_HUFF_EXTEND(level, size);
1085 pos = JJ_ZAG[i];
1086 coeff *= (long)qtab[pos];
1087 if(coeff)
1088 {
1089 c_cnt++;
1090 dct_buf[pos] = (int16_t)(coeff);
1091 }
1092 i++;
1093 }
1094 else
1095 {
1096 if(run != 15) break; /* EOB */
1097 i += 16;
1098 }
1099 }
1100
1101 if(c_cnt) quicktime_rev_dct(dct_buf, OBuf, rnglimit);
1102 else
1103 {
1104 register unsigned char *op = OBuf;
1105 register int jj = 8;
1106 int16_t v = *dct_buf;
1107 register unsigned char dc;
1108
1109 v = (v < 0) ? ((v - 3) >> 3) : ((v + 4) >> 3);
1110 dc = rnglimit[(int)(v & RANGE_MASK)];
1111 while(jj--)
1112 {
1113 op[0] = op[1] = op[2] = op[3] = op[4] = op[5] = op[6] = op[7] = dc;
1114 op += 8;
1115 }
1116 }
1117 return 0;
1118 }
1119
1120
1121 int quicktime_fastjpg_MCU411111_to_RGB(QUICKTIME_MCU_ARGS)
1122 {
1123 QUICKTIME_MCU_VARS
1124 QUICKTIME_MCU111111_MID_VARS
1125 QUICKTIME_MCU_INNER_VARS
1126
1127 while(frame_height > 0)
1128 {
1129 yptr = ybuf;
1130 uptr = ubuf;
1131 vptr = vbuf;
1132 for(yi = 0; yi < 8; yi++)
1133 {
1134 QUICKTIME_MCU111111_MID_DECL;
1135 if(frame_height <= 0) return 0;
1136 while(xi--)
1137 {
1138 QUICKTIME_MCU_INNER_INIT;
1139 QUICKTIME_MCU_YUV_TO_RGB(YTab[*yp++], cr, cg, cb, ip);
1140 QUICKTIME_MCU_YUV_TO_RGB(YTab[*yp++], cr, cg, cb, ip);
1141 QUICKTIME_MCU_YUV_TO_RGB(YTab[*yp++], cr, cg, cb, ip);
1142 QUICKTIME_MCU_YUV_TO_RGB(YTab[*yp++], cr, cg, cb, ip);
1143 QUICKTIME_MCU4H_INNER_TAIL(56, 56);
1144 }
1145 yptr += 8;
1146 uptr += 8;
1147 vptr += 8;
1148 frame_height--;
1149 row_pointers += interlaced ? 2 : 1;
1150 }
1151 ybuf += mcu_row_size << 2;
1152 ubuf += mcu_row_size;
1153 vbuf += mcu_row_size;
1154 }
1155 }
1156
1157 int quicktime_fastjpg_decode_411111(quicktime_jpeg_t *jpeg_info,
1158 unsigned char **output_rows,
1159 int jpeg_width,
1160 int jpeg_height,
1161 int interlaced,
1162 int row_offset,
1163 int frame_width,
1164 int frame_height)
1165 {
1166 long x, mcu_cols, mcu_rows;
1167 long *qtab0, *qtab1, *qtab2;
1168 unsigned char *Ybuf, *Ubuf, *Vbuf;
1169 unsigned long rst_count;
1170 unsigned long rst_skip = 0;
1171 unsigned long orow_size = frame_width * 3 * (interlaced ? 2 : 1);
1172
1173 if(interlaced) frame_height >>= 1;
1174 frame_width += 3;
1175 frame_width >>= 2; /* 4h */
1176 qtab0 = jpeg_info->quant_tables[jpeg_info->jpg_comps[0].qtbl_num];
1177 qtab1 = jpeg_info->quant_tables[jpeg_info->jpg_comps[1].qtbl_num];
1178 qtab2 = jpeg_info->quant_tables[jpeg_info->jpg_comps[2].qtbl_num];
1179
1180 mcu_cols = (jpeg_width + 31) / 32;
1181 mcu_rows = (jpeg_height + 7) / 8;
1182 jpeg_info->marker = 0x00;
1183
1184 rst_count = jpeg_info->jpg_rst_interval;
1185 output_rows += row_offset;
1186 while(mcu_rows--)
1187 {
1188 Ybuf = jpeg_info->yuvbufs.ybuf;
1189 Ubuf = jpeg_info->yuvbufs.ubuf;
1190 Vbuf = jpeg_info->yuvbufs.vbuf;
1191 x = mcu_cols;
1192 while(x--)
1193 {
1194 if(rst_skip)
1195 {
1196 rst_skip--;
1197 memset(Ybuf, 0, (DCTSIZE2 << 2));
1198 memset(Ubuf, 0x80, DCTSIZE2);
1199 memset(Vbuf, 0x80, DCTSIZE2);
1200 Ybuf += (DCTSIZE2 << 2);
1201 Ubuf += DCTSIZE2;
1202 Vbuf += DCTSIZE2;
1203 }
1204 else
1205 {
1206 QUICKTIME_FASTJPG_HANDLE_RST(jpeg_info->jpg_rst_interval, rst_count);
1207
1208 /* Y0 Y1 Y2 Y3 U V */
1209 quicktime_fastjpg_huffparse(jpeg_info, &(jpeg_info->jpg_comps[0]), jpeg_info->jpg_dct_buf, qtab0, Ybuf); Ybuf += DCTSIZE2;
1210 quicktime_fastjpg_huffparse(jpeg_info, &(jpeg_info->jpg_comps[0]), jpeg_info->jpg_dct_buf, qtab0, Ybuf); Ybuf += DCTSIZE2;
1211 quicktime_fastjpg_huffparse(jpeg_info, &(jpeg_info->jpg_comps[0]), jpeg_info->jpg_dct_buf, qtab0, Ybuf); Ybuf += DCTSIZE2;
1212 quicktime_fastjpg_huffparse(jpeg_info, &(jpeg_info->jpg_comps[0]), jpeg_info->jpg_dct_buf, qtab0, Ybuf); Ybuf += DCTSIZE2;
1213 quicktime_fastjpg_huffparse(jpeg_info, &(jpeg_info->jpg_comps[1]), jpeg_info->jpg_dct_buf, qtab1, Ubuf); Ubuf += DCTSIZE2;
1214 quicktime_fastjpg_huffparse(jpeg_info, &(jpeg_info->jpg_comps[2]), jpeg_info->jpg_dct_buf, qtab2, Vbuf); Vbuf += DCTSIZE2;
1215
1216 if(jpeg_info->marker == 0)
1217 jpeg_info->marker = quicktime_fastjpg_check_for_marker(jpeg_info);
1218 QUICKTIME_FASTJPG_TEST_MARKER;
1219 }
1220 } /* end of mcu_cols */
1221
1222 quicktime_fastjpg_MCU411111_to_RGB(jpeg_info,
1223 output_rows,
1224 frame_width,
1225 (frame_height < 8 ? frame_height : 8),
1226 (mcu_cols * DCTSIZE2),
1227 orow_size,
1228 &(jpeg_info->yuvbufs),
1229 interlaced);
1230 frame_height -= 8;
1231 output_rows += interlaced ? 16 : 8;
1232 } /* end of mcu_rows */
1233
1234 if(jpeg_info->marker)
1235 {
1236 jpeg_info->jpg_h_bbuf = 0;
1237 jpeg_info->jpg_h_bnum = 0;
1238 }
1239 return 0;
1240 }
1241
1242 int quicktime_fastjpg_MCU221111_to_RGB(QUICKTIME_MCU_ARGS)
1243 {
1244 QUICKTIME_MCU_VARS
1245 QUICKTIME_MCU221111_MID_VARS
1246 QUICKTIME_MCU_INNER_VARS
1247
1248 while(frame_height > 0)
1249 {
1250 yptr = ybuf;
1251 uptr = ubuf;
1252 vptr = vbuf;
1253 for(yi = 0; yi < 8; yi++)
1254 {
1255 QUICKTIME_MCU221111_MID_DECL;
1256 while(xi--)
1257 {
1258 QUICKTIME_MCU_INNER_INIT;
1259 QUICKTIME_MCU_YUV_TO_RGB(YTab[yp[8]], cr, cg, cb, ip1);
1260 QUICKTIME_MCU_YUV_TO_RGB(YTab[*yp++], cr, cg, cb, ip0);
1261 QUICKTIME_MCU_YUV_TO_RGB(YTab[yp[8]], cr, cg, cb, ip1);
1262 QUICKTIME_MCU_YUV_TO_RGB(YTab[*yp++], cr, cg, cb, ip0);
1263 QUICKTIME_MCU2H_INNER_TAIL(56, 184);
1264 }
1265 yptr += 16;
1266 uptr += 8;
1267 vptr += 8;
1268 frame_height -= 2;
1269 }
1270 ybuf += mcu_row_size << 2;
1271 ubuf += mcu_row_size;
1272 vbuf += mcu_row_size;
1273 }
1274 }
1275
1276 int quicktime_fastjpg_decode_221111(quicktime_jpeg_t *jpeg_info,
1277 unsigned char **output_rows,
1278 int jpeg_width,
1279 int jpeg_height,
1280 int interlaced,
1281 int row_offset,
1282 int frame_width,
1283 int frame_height)
1284 {
1285 long x, mcu_cols, mcu_rows;
1286 long *qtab0, *qtab1, *qtab2;
1287 unsigned char *Ybuf, *Ubuf, *Vbuf;
1288 unsigned long rst_count;
1289 unsigned long rst_skip = 0;
1290 unsigned long orow_size = frame_width * 3 * (interlaced ? 2 : 1);
1291
1292 if(interlaced) frame_height >>= 1;
1293 frame_width += 1;
1294 frame_width >>= 1; /* 2h */
1295 qtab0 = jpeg_info->quant_tables[jpeg_info->jpg_comps[0].qtbl_num];
1296 qtab1 = jpeg_info->quant_tables[jpeg_info->jpg_comps[1].qtbl_num];
1297 qtab2 = jpeg_info->quant_tables[jpeg_info->jpg_comps[2].qtbl_num];
1298
1299 mcu_cols = (jpeg_width + 15) / 16;
1300 mcu_rows = (jpeg_height + 15) / 16;
1301 jpeg_info->marker = 0x00;
1302
1303 rst_count = jpeg_info->jpg_rst_interval;
1304 output_rows += row_offset;
1305 while(mcu_rows--)
1306 {
1307 Ybuf = jpeg_info->yuvbufs.ybuf;
1308 Ubuf = jpeg_info->yuvbufs.ubuf;
1309 Vbuf = jpeg_info->yuvbufs.vbuf;
1310 x = mcu_cols;
1311 while(x--)
1312 {
1313 if(rst_skip)
1314 {
1315 rst_skip--;
1316 memset(Ybuf, 0, (DCTSIZE2 << 2));
1317 memset(Ubuf, 0x80, DCTSIZE2);
1318 memset(Vbuf, 0x80, DCTSIZE2);
1319 Ybuf += (DCTSIZE2 << 2);
1320 Ubuf += DCTSIZE2;
1321 Vbuf += DCTSIZE2;
1322 }
1323 else
1324 {
1325 QUICKTIME_FASTJPG_HANDLE_RST(jpeg_info->jpg_rst_interval, rst_count);
1326
1327 /* Y0 Y1 Y2 Y3 U V */
1328 quicktime_fastjpg_huffparse(jpeg_info, &(jpeg_info->jpg_comps[0]), jpeg_info->jpg_dct_buf, qtab0, Ybuf); Ybuf += DCTSIZE2;
1329 quicktime_fastjpg_huffparse(jpeg_info, &(jpeg_info->jpg_comps[0]), jpeg_info->jpg_dct_buf, qtab0, Ybuf); Ybuf += DCTSIZE2;
1330 quicktime_fastjpg_huffparse(jpeg_info, &(jpeg_info->jpg_comps[0]), jpeg_info->jpg_dct_buf, qtab0, Ybuf); Ybuf += DCTSIZE2;
1331 quicktime_fastjpg_huffparse(jpeg_info, &(jpeg_info->jpg_comps[0]), jpeg_info->jpg_dct_buf, qtab0, Ybuf); Ybuf += DCTSIZE2;
1332 quicktime_fastjpg_huffparse(jpeg_info, &(jpeg_info->jpg_comps[1]), jpeg_info->jpg_dct_buf, qtab1, Ubuf); Ubuf += DCTSIZE2;
1333 quicktime_fastjpg_huffparse(jpeg_info, &(jpeg_info->jpg_comps[2]), jpeg_info->jpg_dct_buf, qtab2, Vbuf); Vbuf += DCTSIZE2;
1334
1335 if(jpeg_info->marker == 0)
1336 jpeg_info->marker = quicktime_fastjpg_check_for_marker(jpeg_info);
1337 QUICKTIME_FASTJPG_TEST_MARKER;
1338 }
1339 } /* end of mcu_cols */
1340
1341 quicktime_fastjpg_MCU221111_to_RGB(jpeg_info,
1342 output_rows,
1343 frame_width,
1344 (frame_height < 16 ? frame_height : 16),
1345 (mcu_cols * DCTSIZE2),
1346 orow_size,
1347 &(jpeg_info->yuvbufs),
1348 interlaced);
1349 frame_height -= 16;
1350 output_rows += interlaced ? 32 : 16;
1351 } /* end of mcu_rows */
1352
1353 if(jpeg_info->marker)
1354 {
1355 jpeg_info->jpg_h_bbuf = 0;
1356 jpeg_info->jpg_h_bnum = 0;
1357 }
1358 return 0;
1359 }
1360
1361 int quicktime_fastjpg_double_mcu(unsigned char *ptr, int mcus)
1362 {
1363 unsigned char *sblk, *dblk;
1364 int blks = mcus * 8;
1365 int flag = 0;
1366
1367 sblk = ptr + (blks * 8) - 8;
1368 dblk = ptr + (blks * 16) - 8;
1369 while(blks--)
1370 {
1371 dblk[7] = dblk[6] = sblk[7];
1372 dblk[5] = dblk[4] = sblk[6];
1373 dblk[3] = dblk[2] = sblk[5];
1374 dblk[1] = dblk[0] = sblk[4];
1375 dblk -= 64;
1376 dblk[7] = dblk[6] = sblk[3];
1377 dblk[5] = dblk[4] = sblk[2];
1378 dblk[3] = dblk[2] = sblk[1];
1379 dblk[1] = dblk[0] = sblk[0];
1380 flag++;
1381 if(flag >= 8)
1382 {
1383 flag = 0;
1384 dblk -= 8;
1385 }
1386 else
1387 {
1388 dblk += 56;
1389 }
1390 sblk -= 8;
1391 }
1392 }
1393
1394 int quicktime_fastjpg_MCU211111_to_RGB(QUICKTIME_MCU_ARGS)
1395 {
1396 QUICKTIME_MCU_VARS
1397 QUICKTIME_MCU111111_MID_VARS
1398 QUICKTIME_MCU_INNER_VARS
1399
1400 while(frame_height > 0)
1401 {
1402 yptr = ybuf;
1403 uptr = ubuf;
1404 vptr = vbuf;
1405 for(yi = 0; yi < 8; yi++)
1406 {
1407 QUICKTIME_MCU111111_MID_DECL;
1408 if(frame_height <= 0) return;
1409 while(xi--)
1410 {
1411 QUICKTIME_MCU_INNER_INIT;
1412 QUICKTIME_MCU_YUV_TO_RGB(YTab[*yp++], cr, cg, cb, ip);
1413 QUICKTIME_MCU_YUV_TO_RGB(YTab[*yp++], cr, cg, cb, ip);
1414 QUICKTIME_MCU2H_INNER_TAIL(56, 56);
1415 }
1416 yptr += 8;
1417 uptr += 8;
1418 vptr += 8;
1419 frame_height -= 2;
1420 row_pointers += interlaced ? 2 : 1;
1421 }
1422 ybuf += mcu_row_size << 1;
1423 ubuf += mcu_row_size;
1424 vbuf += mcu_row_size;
1425 }
1426 }
1427
1428 int quicktime_fastjpg_decode_211111(quicktime_jpeg_t *jpeg_info,
1429 unsigned char **output_rows,
1430 int jpeg_width,
1431 int jpeg_height,
1432 int interlaced,
1433 int row_offset,
1434 int frame_width,
1435 int frame_height)
1436 {
1437 long x, mcu_cols, mcu_rows;
1438 long *qtab0, *qtab1, *qtab2;
1439 unsigned char *Ybuf, *Ubuf, *Vbuf;
1440 unsigned long rst_count;
1441 unsigned long rst_skip = 0;
1442 unsigned long orow_size = frame_width * 3 * (interlaced ? 2 : 1);
1443
1444 if(interlaced) frame_height >>= 1;
1445 frame_width += 1;
1446 frame_width >>= 1; /* 2h */
1447 qtab0 = jpeg_info->quant_tables[jpeg_info->jpg_comps[0].qtbl_num];
1448 qtab1 = jpeg_info->quant_tables[jpeg_info->jpg_comps[1].qtbl_num];
1449 qtab2 = jpeg_info->quant_tables[jpeg_info->jpg_comps[2].qtbl_num];
1450
1451 mcu_cols = (jpeg_width + 15) / 16;
1452 mcu_rows = (jpeg_height + 7) / 8;
1453 jpeg_info->marker = 0x00;
1454
1455 rst_count = jpeg_info->jpg_rst_interval;
1456 output_rows += row_offset;
1457 while(mcu_rows--)
1458 {
1459 Ybuf = jpeg_info->yuvbufs.ybuf;
1460 Ubuf = jpeg_info->yuvbufs.ubuf;
1461 Vbuf = jpeg_info->yuvbufs.vbuf;
1462 x = mcu_cols;
1463 while(x--)
1464 {
1465 if(rst_skip)
1466 {
1467 rst_skip--;
1468 memset(Ybuf, 0, (DCTSIZE2 << 1));
1469 memset(Ubuf, 0x80, DCTSIZE2);
1470 memset(Vbuf, 0x80, DCTSIZE2);
1471 Ybuf += (DCTSIZE2 << 1);
1472 Ubuf += DCTSIZE2;
1473 Vbuf += DCTSIZE2;
1474 }
1475 else
1476 {
1477 QUICKTIME_FASTJPG_HANDLE_RST(jpeg_info->jpg_rst_interval, rst_count);
1478
1479 quicktime_fastjpg_huffparse(jpeg_info, &(jpeg_info->jpg_comps[0]), jpeg_info->jpg_dct_buf, qtab0, Ybuf); Ybuf += DCTSIZE2;
1480 quicktime_fastjpg_huffparse(jpeg_info, &(jpeg_info->jpg_comps[0]), jpeg_info->jpg_dct_buf, qtab0, Ybuf); Ybuf += DCTSIZE2;
1481 quicktime_fastjpg_huffparse(jpeg_info, &(jpeg_info->jpg_comps[1]), jpeg_info->jpg_dct_buf, qtab1, Ubuf); Ubuf += DCTSIZE2;
1482 quicktime_fastjpg_huffparse(jpeg_info, &(jpeg_info->jpg_comps[2]), jpeg_info->jpg_dct_buf, qtab2, Vbuf); Vbuf += DCTSIZE2;
1483
1484 if(jpeg_info->marker == 0)
1485 jpeg_info->marker = quicktime_fastjpg_check_for_marker(jpeg_info);
1486 QUICKTIME_FASTJPG_TEST_MARKER;
1487 }
1488 } /* end of mcu_cols */
1489
1490 /* NOTE: imagex already >> 1 above */
1491 if(jpeg_width <= frame_width)
1492 {
1493 quicktime_fastjpg_double_mcu(jpeg_info->yuvbufs.ybuf, (mcu_cols << 1));
1494 quicktime_fastjpg_double_mcu(jpeg_info->yuvbufs.ubuf, mcu_cols);
1495 quicktime_fastjpg_double_mcu(jpeg_info->yuvbufs.vbuf, mcu_cols);
1496 }
1497
1498 quicktime_fastjpg_MCU211111_to_RGB(jpeg_info,
1499 output_rows,
1500 frame_width,
1501 (frame_height < 8 ? frame_height : 8),
1502 ((mcu_cols << 1) * DCTSIZE2),
1503 orow_size,
1504 &(jpeg_info->yuvbufs),
1505 interlaced);
1506
1507 frame_height -= 8;
1508 output_rows += interlaced ? 16 : 8;
1509 } /* end of mcu_rows */
1510
1511 if(jpeg_info->marker)
1512 {
1513 jpeg_info->jpg_h_bbuf = 0;
1514 jpeg_info->jpg_h_bnum = 0;
1515 }
1516 return 0;
1517 }
1518
1519 int quicktime_fastjpg_MCU111111_to_RGB(QUICKTIME_MCU_ARGS)
1520 {
1521 QUICKTIME_MCU_VARS
1522 QUICKTIME_MCU111111_MID_VARS
1523 QUICKTIME_MCU_INNER_VARS
1524
1525 while(frame_height > 0)
1526 {
1527 yptr = ybuf;
1528 uptr = ubuf;
1529 vptr = vbuf;
1530 for(yi = 0; yi < 8; yi++)
1531 {
1532 QUICKTIME_MCU111111_MID_DECL;
1533 if(frame_height <= 0) return;
1534 while(xi--)
1535 {
1536 QUICKTIME_MCU_INNER_INIT;
1537 QUICKTIME_MCU_YUV_TO_RGB(YTab[*yp++], cr, cg, cb, ip);
1538 QUICKTIME_MCU1H_INNER_TAIL(56);
1539 }
1540 yptr += 8;
1541 uptr += 8;
1542 vptr += 8;
1543 frame_height--;
1544 row_pointers += interlaced ? 2 : 1;
1545 }
1546 ybuf += mcu_row_size;
1547 ubuf += mcu_row_size;
1548 vbuf += mcu_row_size;
1549 }
1550 }
1551
1552 int quicktime_fastjpg_decode_111111(quicktime_jpeg_t *jpeg_info,
1553 unsigned char **output_rows,
1554 int jpeg_width,
1555 int jpeg_height,
1556 int interlaced,
1557 int row_offset,
1558 int frame_width,
1559 int frame_height,
1560 int grey)
1561 {
1562 long x, mcu_cols, mcu_rows;
1563 long *qtab0, *qtab1, *qtab2;
1564 unsigned char *Ybuf, *Ubuf, *Vbuf;
1565 unsigned long rst_count;
1566 unsigned long rst_skip = 0;
1567 unsigned long orow_size = frame_width * 3 * (interlaced ? 2 : 1);
1568
1569 if(interlaced) frame_height >>= 1;
1570 qtab0 = jpeg_info->quant_tables[jpeg_info->jpg_comps[0].qtbl_num];
1571 qtab1 = jpeg_info->quant_tables[jpeg_info->jpg_comps[1].qtbl_num];
1572 qtab2 = jpeg_info->quant_tables[jpeg_info->jpg_comps[2].qtbl_num];
1573
1574 mcu_cols = (jpeg_width + 7) / 8;
1575 mcu_rows = (jpeg_height + 7) / 8;
1576 jpeg_info->marker = 0x00;
1577
1578 rst_count = jpeg_info->jpg_rst_interval;
1579 output_rows += row_offset;
1580 while(mcu_rows--)
1581 {
1582 Ybuf = jpeg_info->yuvbufs.ybuf;
1583 Ubuf = jpeg_info->yuvbufs.ubuf;
1584 Vbuf = jpeg_info->yuvbufs.vbuf;
1585 x = mcu_cols;
1586 while(x--)
1587 {
1588 if(rst_skip)
1589 {
1590 rst_skip--;
1591
1592 if(Ybuf != jpeg_info->yuvbufs.ybuf)
1593 {
1594 unsigned char *prev;
1595 prev = Ybuf - DCTSIZE2;
1596 memcpy(Ybuf, prev, DCTSIZE2);
1597 Ybuf += DCTSIZE2;
1598 prev = Ubuf - DCTSIZE2;
1599 memcpy(Ubuf, prev, DCTSIZE2);
1600 prev = Vbuf - DCTSIZE2;
1601 memcpy(Vbuf, prev, DCTSIZE2);
1602 Ubuf += DCTSIZE2;
1603 Vbuf += DCTSIZE2;
1604 }
1605 else
1606 {
1607 memset(Ybuf, 0, DCTSIZE2);
1608 Ybuf += DCTSIZE2;
1609 memset(Ubuf, 0x80, DCTSIZE2);
1610 memset(Vbuf, 0x80, DCTSIZE2);
1611 Ubuf += DCTSIZE2;
1612 Vbuf += DCTSIZE2;
1613 }
1614 }
1615 else
1616 {
1617 QUICKTIME_FASTJPG_HANDLE_RST(jpeg_info->jpg_rst_interval, rst_count);
1618
1619 quicktime_fastjpg_huffparse(jpeg_info, &(jpeg_info->jpg_comps[0]), jpeg_info->jpg_dct_buf, qtab0, Ybuf); Ybuf += DCTSIZE2;
1620 quicktime_fastjpg_huffparse(jpeg_info, &(jpeg_info->jpg_comps[1]), jpeg_info->jpg_dct_buf, qtab1, Ubuf); Ubuf += DCTSIZE2;
1621 quicktime_fastjpg_huffparse(jpeg_info, &(jpeg_info->jpg_comps[2]), jpeg_info->jpg_dct_buf, qtab2, Vbuf); Vbuf += DCTSIZE2;
1622
1623 if(jpeg_info->marker == 0)
1624 jpeg_info->marker = quicktime_fastjpg_check_for_marker(jpeg_info);
1625 QUICKTIME_FASTJPG_TEST_MARKER;
1626 }
1627 } /* end of mcu_cols */
1628
1629 /* NOTE: imagex already >> 1 above */
1630 quicktime_fastjpg_MCU111111_to_RGB(jpeg_info,
1631 output_rows,
1632 frame_width,
1633 (frame_height < 8 ? frame_height : 8),
1634 (mcu_cols * DCTSIZE2),
1635 orow_size,
1636 &(jpeg_info->yuvbufs),
1637 interlaced);
1638
1639 frame_height -= 8;
1640 output_rows += interlaced ? 16 : 8;
1641 } /* end of mcu_rows */
1642
1643 if(jpeg_info->marker)
1644 {
1645 jpeg_info->jpg_h_bbuf = 0;
1646 jpeg_info->jpg_h_bnum = 0;
1647 }
1648 return 0;
1649 }
1650
1651 int quicktime_fastjpg_decode(unsigned char *chunk,
1652 long chunk_size,
1653 unsigned char **output_rows,
1654 quicktime_jpeg_t *jpeg_info,
1655 int frame_width,
1656 int frame_height,
1657 int interlaced)
1658 {
1659 int base_y, row_offset;
1660 int ijpeg = 0;
1661 int result = 0;
1662 jpeg_info->mjpa_info.valid = 0;
1663
1664 jpeg_info->chunk = chunk;
1665 jpeg_info->chunk_size = chunk_size;
1666
1667 for(base_y = 0; base_y < (interlaced ? 2 : 1); base_y++)
1668 {
1669 /* Reset structures */
1670 jpeg_info->jpg_saw_EOI = 0;
1671 jpeg_info->jpg_saw_SOI = jpeg_info->jpg_saw_SOF = jpeg_info->jpg_saw_SOS = jpeg_info->jpg_saw_DHT = jpeg_info->jpg_saw_DQT = 0;
1672
1673 if(quicktime_fastjpg_read_markers(jpeg_info))
1674 {
1675 printf("quicktime_fastjpg_decode read markers failed\n");
1676 }
1677
1678 quicktime_fastjpg_resethuffman(jpeg_info);
1679 if(interlaced)
1680 {
1681 row_offset = (base_y == 0) ? 0 : 1;
1682 }
1683 else
1684 row_offset = 0;
1685
1686 if((!jpeg_info->jpg_saw_DHT) && (!jpeg_info->jpg_std_DHT_flag))
1687 {
1688 quicktime_fastjpg_buildstdhuffman(jpeg_info);
1689 }
1690
1691 if(!jpeg_info->jpg_saw_DQT)
1692 {
1693 quicktime_fastjpg_buildstdDQT(jpeg_info, 100);
1694 }
1695
1696 jpeg_info->marker = 0x00;
1697 /*if(jpeg_info->jpg_width > frame_width) */
1698 quicktime_fastjpg_initMCU(jpeg_info, jpeg_info->jpg_width, 0, 0);
1699
1700 /* Perform the decompression */
1701 if((jpeg_info->jpg_num_comps == 3) && (jpeg_info->jpg_comps_in_scan == 3) &&
1702 (jpeg_info->jpg_comps[1].hvsample == 0x11) && (jpeg_info->jpg_comps[2].hvsample== 0x11))
1703 {
1704 if(jpeg_info->jpg_comps[0].hvsample == 0x41) /* 411 */
1705 {
1706 quicktime_fastjpg_decode_411111(jpeg_info,
1707 output_rows,
1708 jpeg_info->jpg_width,
1709 jpeg_info->jpg_height,
1710 interlaced,
1711 row_offset,
1712 frame_width,
1713 frame_height);
1714 }
1715 else
1716 if(jpeg_info->jpg_comps[0].hvsample == 0x22) /* 411 */
1717 {
1718 quicktime_fastjpg_decode_221111(jpeg_info,
1719 output_rows,
1720 jpeg_info->jpg_width,
1721 jpeg_info->jpg_height,
1722 interlaced,
1723 row_offset,
1724 frame_width,
1725 frame_height);
1726 }
1727 else
1728 if(jpeg_info->jpg_comps[0].hvsample == 0x21) /* 211 */
1729 {
1730 quicktime_fastjpg_decode_211111(jpeg_info,
1731 output_rows,
1732 jpeg_info->jpg_width,
1733 jpeg_info->jpg_height,
1734 interlaced,
1735 row_offset,
1736 frame_width,
1737 frame_height);
1738 }
1739 else if(jpeg_info->jpg_comps[0].hvsample == 0x11) /* 111 */
1740 {
1741 quicktime_fastjpg_decode_111111(jpeg_info,
1742 output_rows,
1743 jpeg_info->jpg_width,
1744 jpeg_info->jpg_height,
1745 interlaced,
1746 row_offset,
1747 frame_width,
1748 frame_height,
1749 0);
1750 }
1751 else
1752 {
1753 printf("quicktime_fastjpg_decode: cmps %d %d mcu %04x %04x %04x unsupported\n",
1754 jpeg_info->jpg_num_comps,
1755 jpeg_info->jpg_comps_in_scan,
1756 jpeg_info->jpg_comps[0].hvsample,
1757 jpeg_info->jpg_comps[1].hvsample,
1758 jpeg_info->jpg_comps[2].hvsample);
1759 break;
1760 }
1761 }
1762 else
1763 if((jpeg_info->jpg_num_comps == 1) || (jpeg_info->jpg_comps_in_scan == 1))
1764 {
1765 /* Grayscale not supported */
1766 quicktime_fastjpg_decode_111111(jpeg_info,
1767 output_rows,
1768 jpeg_info->jpg_width,
1769 jpeg_info->jpg_height,
1770 interlaced,
1771 row_offset,
1772 frame_width,
1773 frame_height,
1774 1);
1775 }
1776 else
1777 {
1778 printf("quicktime_fastjpg_decode: cmps %d %d mcu %04x %04x %04x unsupported.\n",
1779 jpeg_info->jpg_num_comps,
1780 jpeg_info->jpg_comps_in_scan,
1781 jpeg_info->jpg_comps[0].hvsample,
1782 jpeg_info->jpg_comps[1].hvsample,
1783 jpeg_info->jpg_comps[2].hvsample);
1784 break;
1785 }
1786
1787 if(jpeg_info->marker == M_EOI)
1788 {
1789 jpeg_info->jpg_saw_EOI = 1;
1790 jpeg_info->marker = 0x00;
1791 }
1792 else
1793 if(!jpeg_info->jpg_saw_EOI)
1794 if(quicktime_fastjpg_readEOI(jpeg_info))
1795 break;
1796
1797 }
1798 return result;
1799 }
mob repository