49 |
******************************************************************************/ |
******************************************************************************/ |
50 |
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51 |
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52 |
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#include <stdio.h> |
53 |
#include <stdlib.h> |
#include <stdlib.h> |
54 |
#include "../portab.h" |
#include "../portab.h" |
55 |
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#include "../global.h" |
56 |
#include "bitstream.h" |
#include "bitstream.h" |
57 |
#include "zigzag.h" |
#include "zigzag.h" |
58 |
#include "vlc_codes.h" |
#include "vlc_codes.h" |
60 |
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61 |
#include "../utils/mbfunctions.h" |
#include "../utils/mbfunctions.h" |
62 |
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63 |
#define ABS(X) (((X)>0)?(X):-(X)) |
/* #define BIGLUT */ |
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#define CLIP(X,A) (X > A) ? (A) : (X) |
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VLC intra_table[4*2048*64]; |
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VLC inter_table[4*2048*64]; |
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64 |
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65 |
VLC DCT3Dintra[4096]; |
#ifdef BIGLUT |
66 |
VLC DCT3Dinter[4096]; |
#define LEVELOFFSET 2048 |
67 |
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#else |
68 |
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#define LEVELOFFSET 32 |
69 |
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#endif |
70 |
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71 |
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static REVERSE_EVENT DCT3D[2][4096]; |
72 |
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73 |
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#ifdef BIGLUT |
74 |
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static VLC coeff_VLC[2][2][4096][64]; |
75 |
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static VLC *intra_table, *inter_table; |
76 |
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#else |
77 |
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static VLC coeff_VLC[2][2][64][64]; |
78 |
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#endif |
79 |
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80 |
/* not really MB related, but VLCs are only available here */ |
/* not really MB related, but VLCs are only available here */ |
81 |
void bs_put_spritetrajectory(Bitstream * bs, const int val) |
void bs_put_spritetrajectory(Bitstream * bs, const int val) |
109 |
void |
void |
110 |
init_vlc_tables(void) |
init_vlc_tables(void) |
111 |
{ |
{ |
112 |
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uint32_t i, j, k, intra, last, run, run_esc, level, level_esc, escape, escape_len, offset, limit; |
113 |
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int32_t l; |
114 |
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115 |
int32_t k, l, i, intra, last; |
#ifdef BIGLUT |
116 |
VLC *vlc[2]; |
intra_table = coeff_VLC[1]; |
117 |
VLC **coeff_ptr; |
inter_table = coeff_VLC[0]; |
118 |
VLC *vlc1, *vlc2; |
#endif |
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vlc1 = DCT3Dintra; |
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vlc2 = DCT3Dinter; |
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vlc[0] = intra_table; |
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vlc[1] = inter_table; |
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// generate encoding vlc lookup tables |
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// the lookup table idea is taken from the excellent fame project by Vivien Chapellier |
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for (i = 0; i < 4; i++) { |
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intra = i % 2; |
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last = i / 2; |
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coeff_ptr = coeff_vlc[last + 2 * intra]; |
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for (k = -2047; k < 2048; k++) { // level |
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int8_t *max_level_ptr = max_level[last + 2 * intra]; |
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int8_t *max_run_ptr = max_run[last + 2 * intra]; |
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for (l = 0; l < 64; l++) { // run |
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int32_t level = k; |
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ptr_t run = l; |
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if ((abs(level) <= max_level_ptr[run]) && (run <= (uint32_t) max_run_ptr[abs(level)])) { // level < max_level and run < max_run |
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vlc[intra]->code = 0; |
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vlc[intra]->len = 0; |
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goto loop_end; |
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} else { |
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if (level > 0) // correct level |
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level -= max_level_ptr[run]; |
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else |
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level += max_level_ptr[run]; |
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if ((abs(level) <= max_level_ptr[run]) && |
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(run <= (uint32_t) max_run_ptr[abs(level)])) { |
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119 |
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vlc[intra]->code = 0x06; |
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vlc[intra]->len = 8; |
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goto loop_end; |
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} |
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120 |
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121 |
if (level > 0) // still here? |
for (intra = 0; intra < 2; intra++) |
122 |
level += max_level_ptr[run]; // restore level |
for (i = 0; i < 4096; i++) |
123 |
else |
DCT3D[intra][i].event.level = 0; |
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level -= max_level_ptr[run]; |
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124 |
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125 |
run -= max_run_ptr[abs(level)] + 1; // and change run |
for (intra = 0; intra < 2; intra++) |
126 |
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for (last = 0; last < 2; last++) |
127 |
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{ |
128 |
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for (run = 0; run < 63 + last; run++) |
129 |
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for (level = 0; level < 32 << intra; level++) |
130 |
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{ |
131 |
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#ifdef BIGLUT |
132 |
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offset = LEVELOFFSET; |
133 |
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#else |
134 |
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offset = !intra * LEVELOFFSET; |
135 |
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#endif |
136 |
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coeff_VLC[intra][last][level + offset][run].len = 128; |
137 |
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} |
138 |
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} |
139 |
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140 |
if ((abs(level) <= max_level_ptr[run]) && |
for (intra = 0; intra < 2; intra++) |
141 |
(run <= (uint32_t) max_run_ptr[abs(level)])) { |
for (i = 0; i < 102; i++) |
142 |
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{ |
143 |
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#ifdef BIGLUT |
144 |
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offset = LEVELOFFSET; |
145 |
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#else |
146 |
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offset = !intra * LEVELOFFSET; |
147 |
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#endif |
148 |
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for (j = 0; j < 1 << (12 - coeff_tab[intra][i].vlc.len); j++) |
149 |
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{ |
150 |
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DCT3D[intra][(coeff_tab[intra][i].vlc.code << (12 - coeff_tab[intra][i].vlc.len)) | j].len = coeff_tab[intra][i].vlc.len; |
151 |
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DCT3D[intra][(coeff_tab[intra][i].vlc.code << (12 - coeff_tab[intra][i].vlc.len)) | j].event = coeff_tab[intra][i].event; |
152 |
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} |
153 |
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154 |
vlc[intra]->code = 0x0e; |
coeff_VLC[intra][coeff_tab[intra][i].event.last][coeff_tab[intra][i].event.level + offset][coeff_tab[intra][i].event.run].code |
155 |
vlc[intra]->len = 9; |
= coeff_tab[intra][i].vlc.code << 1; |
156 |
goto loop_end; |
coeff_VLC[intra][coeff_tab[intra][i].event.last][coeff_tab[intra][i].event.level + offset][coeff_tab[intra][i].event.run].len |
157 |
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= coeff_tab[intra][i].vlc.len + 1; |
158 |
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#ifndef BIGLUT |
159 |
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if (!intra) |
160 |
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#endif |
161 |
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{ |
162 |
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coeff_VLC[intra][coeff_tab[intra][i].event.last][offset - coeff_tab[intra][i].event.level][coeff_tab[intra][i].event.run].code |
163 |
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= (coeff_tab[intra][i].vlc.code << 1) | 1; |
164 |
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coeff_VLC[intra][coeff_tab[intra][i].event.last][offset - coeff_tab[intra][i].event.level][coeff_tab[intra][i].event.run].len |
165 |
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= coeff_tab[intra][i].vlc.len + 1; |
166 |
} |
} |
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run += max_run_ptr[abs(level)] + 1; |
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167 |
} |
} |
168 |
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169 |
vlc[intra]->code = |
for (intra = 0; intra < 2; intra++) |
170 |
(uint32_t) ((l << 14) | (0x1e + last) << 20) | (1 << 13) | |
for (last = 0; last < 2; last++) |
171 |
((k & 0xfff) << 1) | 1; |
for (run = 0; run < 63 + last; run++) |
172 |
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{ |
173 |
vlc[intra]->len = 30; |
for (level = 1; level < 32 << intra; level++) |
174 |
vlc[intra]++; |
{ |
175 |
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if (level <= max_level[intra][last][run] && run <= max_run[intra][last][level]) |
176 |
continue; |
continue; |
177 |
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178 |
loop_end: |
#ifdef BIGLUT |
179 |
if (level != 0) { |
offset = LEVELOFFSET; |
180 |
vlc[intra]->code = |
#else |
181 |
(vlc[intra]-> |
offset = !intra * LEVELOFFSET; |
182 |
code << (coeff_ptr[run][abs(level) - 1].len + |
#endif |
183 |
1)) | (coeff_ptr[run][abs(level) - |
level_esc = level - max_level[intra][last][run]; |
184 |
1].code << 1); |
run_esc = run - 1 - max_run[intra][last][level]; |
185 |
vlc[intra]->len = |
/*use this test to use shorter esc2 codes when possible |
186 |
(coeff_ptr[run][abs(level) - 1].len + 1) + |
if (level_esc <= max_level[intra][last][run] && run <= max_run[intra][last][level_esc] |
187 |
vlc[intra]->len; |
&& !(coeff_VLC[intra][last][level_esc + offset][run].len + 7 + 1 |
188 |
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> coeff_VLC[intra][last][level + offset][run_esc].code + 7 + 2))*/ |
189 |
if (level < 0) |
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190 |
vlc[intra]->code += 1; |
if (level_esc <= max_level[intra][last][run] && run <= max_run[intra][last][level_esc]) |
191 |
} |
{ |
192 |
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escape = ESCAPE1; |
193 |
vlc[intra]++; |
escape_len = 7 + 1; |
194 |
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run_esc = run; |
195 |
} |
} |
196 |
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else |
197 |
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{ |
198 |
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if (level <= max_level[intra][last][run_esc] && run_esc <= max_run[intra][last][level]) |
199 |
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{ |
200 |
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escape = ESCAPE2; |
201 |
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escape_len = 7 + 2; |
202 |
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level_esc = level; |
203 |
} |
} |
204 |
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else |
205 |
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{ |
206 |
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#ifndef BIGLUT |
207 |
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if (!intra) |
208 |
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#endif |
209 |
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{ |
210 |
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coeff_VLC[intra][last][level + offset][run].code |
211 |
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= (ESCAPE3 << 21) | (last << 20) | (run << 14) | (1 << 13) | ((level & 0xfff) << 1) | 1; |
212 |
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coeff_VLC[intra][last][level + offset][run].len = 30; |
213 |
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coeff_VLC[intra][last][offset - level][run].code |
214 |
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= (ESCAPE3 << 21) | (last << 20) | (run << 14) | (1 << 13) | ((-level & 0xfff) << 1) | 1; |
215 |
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coeff_VLC[intra][last][offset - level][run].len = 30; |
216 |
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} |
217 |
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continue; |
218 |
} |
} |
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for (i = 0; i < 4096; i++) { |
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if (i >= 512) { |
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*vlc1 = DCT3Dtab3[(i >> 5) - 16]; |
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*vlc2 = DCT3Dtab0[(i >> 5) - 16]; |
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} else if (i >= 128) { |
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*vlc1 = DCT3Dtab4[(i >> 2) - 32]; |
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*vlc2 = DCT3Dtab1[(i >> 2) - 32]; |
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} else if (i >= 8) { |
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*vlc1 = DCT3Dtab5[i - 8]; |
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*vlc2 = DCT3Dtab2[i - 8]; |
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} else { |
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*vlc1 = ERRtab[i]; |
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*vlc2 = ERRtab[i]; |
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219 |
} |
} |
220 |
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221 |
vlc1++; |
coeff_VLC[intra][last][level + offset][run].code |
222 |
vlc2++; |
= (escape << coeff_VLC[intra][last][level_esc + offset][run_esc].len) |
223 |
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| coeff_VLC[intra][last][level_esc + offset][run_esc].code; |
224 |
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coeff_VLC[intra][last][level + offset][run].len |
225 |
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= coeff_VLC[intra][last][level_esc + offset][run_esc].len + escape_len; |
226 |
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#ifndef BIGLUT |
227 |
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if (!intra) |
228 |
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#endif |
229 |
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{ |
230 |
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coeff_VLC[intra][last][offset - level][run].code |
231 |
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= (escape << coeff_VLC[intra][last][level_esc + offset][run_esc].len) |
232 |
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| coeff_VLC[intra][last][level_esc + offset][run_esc].code | 1; |
233 |
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coeff_VLC[intra][last][offset - level][run].len |
234 |
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= coeff_VLC[intra][last][level_esc + offset][run_esc].len + escape_len; |
235 |
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} |
236 |
} |
} |
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DCT3D[0] = DCT3Dinter; |
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DCT3D[1] = DCT3Dintra; |
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237 |
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238 |
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#ifdef BIGLUT |
239 |
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for (level = 32 << intra; level < 2048; level++) |
240 |
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{ |
241 |
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coeff_VLC[intra][last][level + offset][run].code |
242 |
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= (ESCAPE3 << 21) | (last << 20) | (run << 14) | (1 << 13) | ((level & 0xfff) << 1) | 1; |
243 |
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coeff_VLC[intra][last][level + offset][run].len = 30; |
244 |
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245 |
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coeff_VLC[intra][last][offset - level][run].code |
246 |
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= (ESCAPE3 << 21) | (last << 20) | (run << 14) | (1 << 13) | ((-level & 0xfff) << 1) | 1; |
247 |
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coeff_VLC[intra][last][offset - level][run].len = 30; |
248 |
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} |
249 |
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#else |
250 |
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if (!intra) |
251 |
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{ |
252 |
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coeff_VLC[intra][last][0][run].code |
253 |
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= (ESCAPE3 << 21) | (last << 20) | (run << 14) | (1 << 13) | ((-32 & 0xfff) << 1) | 1; |
254 |
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coeff_VLC[intra][last][0][run].len = 30; |
255 |
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} |
256 |
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#endif |
257 |
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} |
258 |
/* init sprite_trajectory tables */ |
/* init sprite_trajectory tables */ |
259 |
/* even if GMC is not specified (it might be used later...) */ |
/* even if GMC is not specified (it might be used later...) */ |
260 |
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264 |
{ |
{ |
265 |
int limit = (1<<k); |
int limit = (1<<k); |
266 |
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267 |
for (i=-(2*limit-1); i<= -limit; i++) |
for (l=-(2*limit-1); l <= -limit; l++) |
268 |
{ |
{ |
269 |
sprite_trajectory_code[i+16384].code = (2*limit-1)+i; |
sprite_trajectory_code[l+16384].code = (2*limit-1)+l; |
270 |
sprite_trajectory_code[i+16384].len = k+1; |
sprite_trajectory_code[l+16384].len = k+1; |
271 |
} |
} |
272 |
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273 |
for (i=limit; i<= 2*limit-1; i++) |
for (l=limit; l<= 2*limit-1; l++) |
274 |
{ |
{ |
275 |
sprite_trajectory_code[i+16384].code = i; |
sprite_trajectory_code[l+16384].code = l; |
276 |
sprite_trajectory_code[i+16384].len = k+1; |
sprite_trajectory_code[l+16384].len = k+1; |
277 |
} |
} |
278 |
} |
} |
279 |
} |
} |
333 |
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334 |
} |
} |
335 |
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336 |
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#ifdef BIGLUT |
337 |
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338 |
static __inline void |
static __inline void |
339 |
CodeCoeff(Bitstream * bs, |
CodeCoeff(Bitstream * bs, |
354 |
j++; |
j++; |
355 |
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|
356 |
do { |
do { |
357 |
vlc = table + 64 * 2047 + (v << 6) + j - last; |
vlc = table + 64 * 2048 + (v << 6) + j - last; |
358 |
last = ++j; |
last = ++j; |
359 |
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|
360 |
// count zeroes |
/* count zeroes */ |
361 |
while (j < 64 && (v = qcoeff[zigzag[j]]) == 0) |
while (j < 64 && (v = qcoeff[zigzag[j]]) == 0) |
362 |
j++; |
j++; |
363 |
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|
364 |
// write code |
/* write code */ |
365 |
if (j != 64) { |
if (j != 64) { |
366 |
BitstreamPutBits(bs, vlc->code, vlc->len); |
BitstreamPutBits(bs, vlc->code, vlc->len); |
367 |
} else { |
} else { |
368 |
vlc += 64 * 4095; |
vlc += 64 * 4096; |
369 |
BitstreamPutBits(bs, vlc->code, vlc->len); |
BitstreamPutBits(bs, vlc->code, vlc->len); |
370 |
break; |
break; |
371 |
} |
} |
373 |
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374 |
} |
} |
375 |
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376 |
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#else |
377 |
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378 |
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static __inline void |
379 |
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CodeCoeffInter(Bitstream * bs, |
380 |
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const int16_t qcoeff[64], |
381 |
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const uint16_t * zigzag) |
382 |
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{ |
383 |
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uint32_t i, run, prev_run, code, len; |
384 |
|
int32_t level, prev_level, level_shifted; |
385 |
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|
386 |
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i = 0; |
387 |
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run = 0; |
388 |
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389 |
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while (!(level = qcoeff[zigzag[i++]])) |
390 |
|
run++; |
391 |
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392 |
|
prev_level = level; |
393 |
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prev_run = run; |
394 |
|
run = 0; |
395 |
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|
396 |
|
while (i < 64) |
397 |
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{ |
398 |
|
if ((level = qcoeff[zigzag[i++]]) != 0) |
399 |
|
{ |
400 |
|
level_shifted = prev_level + 32; |
401 |
|
if (!(level_shifted & -64)) |
402 |
|
{ |
403 |
|
code = coeff_VLC[0][0][level_shifted][prev_run].code; |
404 |
|
len = coeff_VLC[0][0][level_shifted][prev_run].len; |
405 |
|
} |
406 |
|
else |
407 |
|
{ |
408 |
|
code = (ESCAPE3 << 21) | (prev_run << 14) | (1 << 13) | ((prev_level & 0xfff) << 1) | 1; |
409 |
|
len = 30; |
410 |
|
} |
411 |
|
BitstreamPutBits(bs, code, len); |
412 |
|
prev_level = level; |
413 |
|
prev_run = run; |
414 |
|
run = 0; |
415 |
|
} |
416 |
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else |
417 |
|
run++; |
418 |
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} |
419 |
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|
420 |
|
level_shifted = prev_level + 32; |
421 |
|
if (!(level_shifted & -64)) |
422 |
|
{ |
423 |
|
code = coeff_VLC[0][1][level_shifted][prev_run].code; |
424 |
|
len = coeff_VLC[0][1][level_shifted][prev_run].len; |
425 |
|
} |
426 |
|
else |
427 |
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{ |
428 |
|
code = (ESCAPE3 << 21) | (1 << 20) | (prev_run << 14) | (1 << 13) | ((prev_level & 0xfff) << 1) | 1; |
429 |
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len = 30; |
430 |
|
} |
431 |
|
BitstreamPutBits(bs, code, len); |
432 |
|
} |
433 |
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|
434 |
|
static __inline void |
435 |
|
CodeCoeffIntra(Bitstream * bs, |
436 |
|
const int16_t qcoeff[64], |
437 |
|
const uint16_t * zigzag) |
438 |
|
{ |
439 |
|
uint32_t i, abs_level, run, prev_run, code, len; |
440 |
|
int32_t level, prev_level; |
441 |
|
|
442 |
|
i = 1; |
443 |
|
run = 0; |
444 |
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|
445 |
|
while (!(level = qcoeff[zigzag[i++]])) |
446 |
|
run++; |
447 |
|
|
448 |
|
prev_level = level; |
449 |
|
prev_run = run; |
450 |
|
run = 0; |
451 |
|
|
452 |
|
while (i < 64) |
453 |
|
{ |
454 |
|
if ((level = qcoeff[zigzag[i++]]) != 0) |
455 |
|
{ |
456 |
|
abs_level = ABS(prev_level); |
457 |
|
abs_level = abs_level < 64 ? abs_level : 0; |
458 |
|
code = coeff_VLC[1][0][abs_level][prev_run].code; |
459 |
|
len = coeff_VLC[1][0][abs_level][prev_run].len; |
460 |
|
if (len != 128) |
461 |
|
code |= (prev_level < 0); |
462 |
|
else |
463 |
|
{ |
464 |
|
code = (ESCAPE3 << 21) | (prev_run << 14) | (1 << 13) | ((prev_level & 0xfff) << 1) | 1; |
465 |
|
len = 30; |
466 |
|
} |
467 |
|
BitstreamPutBits(bs, code, len); |
468 |
|
prev_level = level; |
469 |
|
prev_run = run; |
470 |
|
run = 0; |
471 |
|
} |
472 |
|
else |
473 |
|
run++; |
474 |
|
} |
475 |
|
|
476 |
|
abs_level = ABS(prev_level); |
477 |
|
abs_level = abs_level < 64 ? abs_level : 0; |
478 |
|
code = coeff_VLC[1][1][abs_level][prev_run].code; |
479 |
|
len = coeff_VLC[1][1][abs_level][prev_run].len; |
480 |
|
if (len != 128) |
481 |
|
code |= (prev_level < 0); |
482 |
|
else |
483 |
|
{ |
484 |
|
code = (ESCAPE3 << 21) | (1 << 20) | (prev_run << 14) | (1 << 13) | ((prev_level & 0xfff) << 1) | 1; |
485 |
|
len = 30; |
486 |
|
} |
487 |
|
BitstreamPutBits(bs, code, len); |
488 |
|
} |
489 |
|
|
490 |
|
#endif |
491 |
|
|
492 |
static __inline void |
static __inline void |
493 |
CodeBlockIntra(const FRAMEINFO * const frame, |
CodeBlockIntra(const FRAMEINFO * const frame, |
545 |
|
|
546 |
bits = BitstreamPos(bs); |
bits = BitstreamPos(bs); |
547 |
|
|
548 |
|
#ifdef BIGLUT |
549 |
CodeCoeff(bs, &qcoeff[i * 64], intra_table, scan_table, 1); |
CodeCoeff(bs, &qcoeff[i * 64], intra_table, scan_table, 1); |
550 |
|
#else |
551 |
|
CodeCoeffIntra(bs, &qcoeff[i * 64], scan_table); |
552 |
|
#endif |
553 |
|
|
554 |
bits = BitstreamPos(bs) - bits; |
bits = BitstreamPos(bs) - bits; |
555 |
pStat->iTextBits += bits; |
pStat->iTextBits += bits; |
569 |
|
|
570 |
int32_t i; |
int32_t i; |
571 |
uint32_t bits, mcbpc, cbpy; |
uint32_t bits, mcbpc, cbpy; |
|
int mcsel=0; |
|
572 |
|
|
573 |
mcbpc = (pMB->mode & 7) | ((pMB->cbp & 3) << 3); |
mcbpc = (pMB->mode & 7) | ((pMB->cbp & 3) << 3); |
574 |
cbpy = 15 - (pMB->cbp >> 2); |
cbpy = 15 - (pMB->cbp >> 2); |
578 |
mcbpc_inter_tab[mcbpc].len); |
mcbpc_inter_tab[mcbpc].len); |
579 |
|
|
580 |
if ( (frame->coding_type == S_VOP) && (pMB->mode == MODE_INTER || pMB->mode == MODE_INTER_Q) ) |
if ( (frame->coding_type == S_VOP) && (pMB->mode == MODE_INTER || pMB->mode == MODE_INTER_Q) ) |
581 |
{ |
BitstreamPutBit(bs, pMB->mcsel); // mcsel: '0'=local motion, '1'=GMC |
|
if (frame->quarterpel) { |
|
|
if ( (pMB->qmvs[0].x == frame->GMC_MV.x) && (pMB->qmvs[0].y == frame->GMC_MV.y) ) |
|
|
mcsel=1; |
|
|
} else { |
|
|
if ( (pMB->mvs[0].x == frame->GMC_MV.x) && (pMB->mvs[0].y == frame->GMC_MV.y) ) |
|
|
mcsel=1; |
|
|
} |
|
|
BitstreamPutBit(bs, mcsel); // mcsel: '0'=local motion, '1'=GMC |
|
|
} |
|
582 |
|
|
583 |
// write cbpy |
// write cbpy |
584 |
BitstreamPutBits(bs, cbpy_tab[cbpy].code, cbpy_tab[cbpy].len); |
BitstreamPutBits(bs, cbpy_tab[cbpy].code, cbpy_tab[cbpy].len); |
607 |
} |
} |
608 |
} |
} |
609 |
// code motion vector(s) if motion is local |
// code motion vector(s) if motion is local |
610 |
if (mcsel==0) |
if (!pMB->mcsel) |
611 |
for (i = 0; i < (pMB->mode == MODE_INTER4V ? 4 : 1); i++) { |
for (i = 0; i < (pMB->mode == MODE_INTER4V ? 4 : 1); i++) { |
612 |
CodeVector(bs, pMB->pmvs[i].x, frame->fcode, pStat); |
CodeVector(bs, pMB->pmvs[i].x, frame->fcode, pStat); |
613 |
CodeVector(bs, pMB->pmvs[i].y, frame->fcode, pStat); |
CodeVector(bs, pMB->pmvs[i].y, frame->fcode, pStat); |
623 |
frame->global_flags & XVID_ALTERNATESCAN ? |
frame->global_flags & XVID_ALTERNATESCAN ? |
624 |
scan_tables[2] : scan_tables[0]; |
scan_tables[2] : scan_tables[0]; |
625 |
|
|
626 |
|
#ifdef BIGLUT |
627 |
CodeCoeff(bs, &qcoeff[i * 64], inter_table, scan_table, 0); |
CodeCoeff(bs, &qcoeff[i * 64], inter_table, scan_table, 0); |
628 |
|
#else |
629 |
|
CodeCoeffInter(bs, &qcoeff[i * 64], scan_table); |
630 |
|
#endif |
631 |
} |
} |
632 |
|
|
633 |
bits = BitstreamPos(bs) - bits; |
bits = BitstreamPos(bs) - bits; |
781 |
|
|
782 |
for (i = 0; i < 6; i++) { |
for (i = 0; i < 6; i++) { |
783 |
if (mb->cbp & (1 << (5 - i))) { |
if (mb->cbp & (1 << (5 - i))) { |
784 |
CodeCoeff(bs, &qcoeff[i * 64], inter_table, scan_tables[direction], 0); |
#ifdef BIGLUT |
785 |
|
CodeCoeff(bs, &qcoeff[i * 64], inter_table, scan_tables[0], 0); |
786 |
|
#else |
787 |
|
CodeCoeffInter(bs, &qcoeff[i * 64], scan_tables[0]); |
788 |
|
#endif |
789 |
} |
} |
790 |
} |
} |
791 |
} |
} |
842 |
|
|
843 |
uint32_t index; |
uint32_t index; |
844 |
|
|
845 |
index = CLIP(BitstreamShowBits(bs, 9), 256); |
index = MIN(BitstreamShowBits(bs, 9), 256); |
846 |
|
|
847 |
BitstreamSkip(bs, mcbpc_inter_table[index].len); |
BitstreamSkip(bs, mcbpc_inter_table[index].len); |
848 |
|
|
977 |
|
|
978 |
} |
} |
979 |
|
|
980 |
|
static __inline int |
981 |
|
get_coeff(Bitstream * bs, |
982 |
|
int *run, |
983 |
|
int *last, |
984 |
|
int intra, |
985 |
|
int short_video_header) |
986 |
|
{ |
987 |
|
|
988 |
|
uint32_t mode; |
989 |
|
int32_t level; |
990 |
|
REVERSE_EVENT *reverse_event; |
991 |
|
|
992 |
|
if (short_video_header) /* inter-VLCs will be used for both intra and inter blocks */ |
993 |
|
intra = 0; |
994 |
|
|
995 |
|
if (BitstreamShowBits(bs, 7) != ESCAPE) { |
996 |
|
reverse_event = &DCT3D[intra][BitstreamShowBits(bs, 12)]; |
997 |
|
|
998 |
|
if ((level = reverse_event->event.level) == 0) |
999 |
|
goto error; |
1000 |
|
|
1001 |
|
*last = reverse_event->event.last; |
1002 |
|
*run = reverse_event->event.run; |
1003 |
|
|
1004 |
|
BitstreamSkip(bs, reverse_event->len); |
1005 |
|
|
1006 |
|
return BitstreamGetBits(bs, 1) ? -level : level; |
1007 |
|
} |
1008 |
|
|
1009 |
|
BitstreamSkip(bs, 7); |
1010 |
|
|
1011 |
|
if (short_video_header) { |
1012 |
|
/* escape mode 4 - H.263 type, only used if short_video_header = 1 */ |
1013 |
|
*last = BitstreamGetBit(bs); |
1014 |
|
*run = BitstreamGetBits(bs, 6); |
1015 |
|
level = BitstreamGetBits(bs, 8); |
1016 |
|
|
1017 |
|
if (level == 0 || level == 128) |
1018 |
|
DPRINTF(DPRINTF_ERROR, "Illegal LEVEL for ESCAPE mode 4: %d", level); |
1019 |
|
|
1020 |
|
return (level << 24) >> 24; |
1021 |
|
} |
1022 |
|
|
1023 |
|
mode = BitstreamShowBits(bs, 2); |
1024 |
|
|
1025 |
|
if (mode < 3) { |
1026 |
|
BitstreamSkip(bs, (mode == 2) ? 2 : 1); |
1027 |
|
|
1028 |
|
reverse_event = &DCT3D[intra][BitstreamShowBits(bs, 12)]; |
1029 |
|
|
1030 |
|
if ((level = reverse_event->event.level) == 0) |
1031 |
|
goto error; |
1032 |
|
|
1033 |
|
*last = reverse_event->event.last; |
1034 |
|
*run = reverse_event->event.run; |
1035 |
|
|
1036 |
|
BitstreamSkip(bs, reverse_event->len); |
1037 |
|
|
1038 |
|
if (mode < 2) /* first escape mode, level is offset */ |
1039 |
|
level += max_level[intra][*last][*run]; |
1040 |
|
else /* second escape mode, run is offset */ |
1041 |
|
*run += max_run[intra][*last][level] + 1; |
1042 |
|
|
1043 |
|
return BitstreamGetBits(bs, 1) ? -level : level; |
1044 |
|
} |
1045 |
|
|
1046 |
|
/* third escape mode - fixed length codes */ |
1047 |
|
BitstreamSkip(bs, 2); |
1048 |
|
*last = BitstreamGetBits(bs, 1); |
1049 |
|
*run = BitstreamGetBits(bs, 6); |
1050 |
|
BitstreamSkip(bs, 1); /* marker */ |
1051 |
|
level = BitstreamGetBits(bs, 12); |
1052 |
|
BitstreamSkip(bs, 1); /* marker */ |
1053 |
|
|
1054 |
|
return (level << 20) >> 20; |
1055 |
|
|
1056 |
|
error: |
1057 |
|
*run = VLC_ERROR; |
1058 |
|
return 0; |
1059 |
|
} |
1060 |
|
|
1061 |
void |
void |
1062 |
get_intra_block(Bitstream * bs, |
get_intra_block(Bitstream * bs, |
1063 |
int16_t * block, |
int16_t * block, |
1080 |
DPRINTF(DPRINTF_COEFF,"block[%i] %i", scan[coeff], level); |
DPRINTF(DPRINTF_COEFF,"block[%i] %i", scan[coeff], level); |
1081 |
//DPRINTF(DPRINTF_COEFF,"block[%i] %i %08x", scan[coeff], level, BitstreamShowBits(bs, 32)); |
//DPRINTF(DPRINTF_COEFF,"block[%i] %i %08x", scan[coeff], level, BitstreamShowBits(bs, 32)); |
1082 |
|
|
1083 |
if (level < -127 || level > 127) { |
if (level < -2047 || level > 2047) { |
1084 |
DPRINTF(DPRINTF_ERROR,"warning: intra_overflow %i", level); |
DPRINTF(DPRINTF_ERROR,"warning: intra_overflow %i", level); |
1085 |
} |
} |
1086 |
coeff++; |
coeff++; |
1114 |
DPRINTF(DPRINTF_COEFF,"block[%i] %i", scan[p], level); |
DPRINTF(DPRINTF_COEFF,"block[%i] %i", scan[p], level); |
1115 |
// DPRINTF(DPRINTF_COEFF,"block[%i] %i %08x", scan[p], level, BitstreamShowBits(bs, 32)); |
// DPRINTF(DPRINTF_COEFF,"block[%i] %i %08x", scan[p], level, BitstreamShowBits(bs, 32)); |
1116 |
|
|
1117 |
if (level < -127 || level > 127) { |
if (level < -2047 || level > 2047) { |
1118 |
DPRINTF(DPRINTF_ERROR,"warning: inter overflow %i", level); |
DPRINTF(DPRINTF_ERROR,"warning: inter overflow %i", level); |
1119 |
} |
} |
1120 |
p++; |
p++; |