Parent Directory | Revision Log
Revision 1.1.2.14 - (view) (download)
1 : | suxen_drol | 1.1.2.1 | /****************************************************************************** |
2 : | * | ||
3 : | edgomez | 1.1.2.5 | * XviD Bit Rate Controller Library |
4 : | * - VBR 2 pass bitrate controler implementation - | ||
5 : | suxen_drol | 1.1.2.1 | * |
6 : | edgomez | 1.1.2.5 | * Copyright (C) 2002-2003 Edouard Gomez <ed.gomez@free.fr> |
7 : | suxen_drol | 1.1.2.1 | * |
8 : | edgomez | 1.1.2.5 | * The curve treatment algorithm is the one implemented by Foxer <email?> and |
9 : | * Dirk Knop <dknop@gwdg.de> for the XviD vfw dynamic library. | ||
10 : | suxen_drol | 1.1.2.1 | * |
11 : | edgomez | 1.1.2.5 | * This program is free software; you can redistribute it and/or modify |
12 : | * it under the terms of the GNU General Public License as published by | ||
13 : | * the Free Software Foundation; either version 2 of the License, or | ||
14 : | * (at your option) any later version. | ||
15 : | suxen_drol | 1.1.2.1 | * |
16 : | edgomez | 1.1.2.5 | * This program is distributed in the hope that it will be useful, |
17 : | * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
18 : | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
19 : | * GNU General Public License for more details. | ||
20 : | suxen_drol | 1.1.2.1 | * |
21 : | edgomez | 1.1.2.5 | * You should have received a copy of the GNU General Public License |
22 : | * along with this program; if not, write to the Free Software | ||
23 : | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | ||
24 : | suxen_drol | 1.1.2.1 | * |
25 : | edgomez | 1.1.2.14 | * $Id$ |
26 : | suxen_drol | 1.1.2.1 | * |
27 : | *****************************************************************************/ | ||
28 : | |||
29 : | #include <stdio.h> | ||
30 : | edgomez | 1.1.2.12 | #include <errno.h> /* errno var (or function with recent libc) */ |
31 : | #include <string.h> /* strerror() */ | ||
32 : | suxen_drol | 1.1.2.1 | |
33 : | #include "../xvid.h" | ||
34 : | #include "../image/image.h" | ||
35 : | |||
36 : | |||
37 : | edgomez | 1.1.2.14 | /* This preprocessor constant controls wheteher or not, first pass is done |
38 : | * using fast ME routines to speed up the 2pass process at the expense of | ||
39 : | * less precise first pass stats */ | ||
40 : | syskin | 1.1.2.13 | #define FAST1PASS |
41 : | |||
42 : | |||
43 : | suxen_drol | 1.1.2.1 | /* context struct */ |
44 : | typedef struct | ||
45 : | { | ||
46 : | FILE * stat_file; | ||
47 : | suxen_drol | 1.1.2.3 | |
48 : | double fq_error; | ||
49 : | suxen_drol | 1.1.2.1 | } rc_2pass1_t; |
50 : | |||
51 : | |||
52 : | |||
53 : | static int rc_2pass1_create(xvid_plg_create_t * create, rc_2pass1_t ** handle) | ||
54 : | { | ||
55 : | xvid_plugin_2pass1_t * param = (xvid_plugin_2pass1_t *)create->param; | ||
56 : | rc_2pass1_t * rc; | ||
57 : | |||
58 : | /* check filename */ | ||
59 : | edgomez | 1.1.2.6 | if ((param->filename == NULL) || |
60 : | (param->filename != NULL && param->filename[0] == '\0')) | ||
61 : | suxen_drol | 1.1.2.1 | return XVID_ERR_FAIL; |
62 : | |||
63 : | /* allocate context struct */ | ||
64 : | if((rc = malloc(sizeof(rc_2pass1_t))) == NULL) | ||
65 : | return(XVID_ERR_MEMORY); | ||
66 : | |||
67 : | edgomez | 1.1.2.7 | /* Initialize safe defaults for 2pass 1 */ |
68 : | suxen_drol | 1.1.2.1 | rc->stat_file = NULL; |
69 : | |||
70 : | /* Open the 1st pass file */ | ||
71 : | edgomez | 1.1.2.8 | if((rc->stat_file = fopen(param->filename, "w+b")) == NULL) |
72 : | suxen_drol | 1.1.2.1 | return(XVID_ERR_FAIL); |
73 : | suxen_drol | 1.1.2.3 | |
74 : | edgomez | 1.1.2.12 | /* I swear xvidcore isn't buggy, but when using mencoder+xvid4 i observe |
75 : | * this weird bug. | ||
76 : | * | ||
77 : | * Symptoms: The stats file grows until it's fclosed, but at this moment | ||
78 : | * a large part of the file is filled by 0x00 bytes w/o any | ||
79 : | * reasonable cause. The stats file is then completly unusable | ||
80 : | * | ||
81 : | * So far, i think i found "the why": | ||
82 : | * - take a MPEG stream containing 2 sequences (concatenate 2 MPEG files | ||
83 : | * together) | ||
84 : | * - Encode this MPEG file | ||
85 : | * | ||
86 : | * It should trigger the bug | ||
87 : | * | ||
88 : | * I think this is caused by some kind of race condition on mencoder module | ||
89 : | * start/stop. | ||
90 : | * - mencoder encodes the first sequence | ||
91 : | * + xvid4 module opens xvid-twopass.stats and writes stats in it. | ||
92 : | * - mencoder detects the second sequence and initialize a second | ||
93 : | * module and stops the old encoder | ||
94 : | * + new xvid4 module opens a new xvid-twopass.stats, old xvid4 | ||
95 : | * module closes it | ||
96 : | * | ||
97 : | * This is IT, got a racing condition. | ||
98 : | * Unbuffered IO, may help ... */ | ||
99 : | setbuf(rc->stat_file, NULL); | ||
100 : | |||
101 : | suxen_drol | 1.1.2.1 | /* |
102 : | * The File Header | ||
103 : | */ | ||
104 : | edgomez | 1.1.2.8 | fprintf(rc->stat_file, "# XviD 2pass stat file (core version %d.%d.%d)\n", |
105 : | XVID_VERSION_MAJOR(XVID_VERSION), | ||
106 : | XVID_VERSION_MINOR(XVID_VERSION), | ||
107 : | XVID_VERSION_PATCH(XVID_VERSION)); | ||
108 : | fprintf(rc->stat_file, "# Please do not modify this file\n\n"); | ||
109 : | edgomez | 1.1.2.7 | |
110 : | suxen_drol | 1.1.2.3 | rc->fq_error = 0; |
111 : | suxen_drol | 1.1.2.1 | |
112 : | *handle = rc; | ||
113 : | return(0); | ||
114 : | } | ||
115 : | |||
116 : | |||
117 : | static int rc_2pass1_destroy(rc_2pass1_t * rc, xvid_plg_destroy_t * destroy) | ||
118 : | { | ||
119 : | edgomez | 1.1.2.12 | if (rc->stat_file) { |
120 : | if (fclose(rc->stat_file) == EOF) { | ||
121 : | DPRINTF(XVID_DEBUG_RC, "Error closing stats file (%s)", strerror(errno)); | ||
122 : | } | ||
123 : | } | ||
124 : | rc->stat_file = NULL; /* Just a paranoid reset */ | ||
125 : | free(rc); /* as the container structure is freed anyway */ | ||
126 : | suxen_drol | 1.1.2.1 | return(0); |
127 : | } | ||
128 : | |||
129 : | |||
130 : | static int rc_2pass1_before(rc_2pass1_t * rc, xvid_plg_data_t * data) | ||
131 : | { | ||
132 : | edgomez | 1.1.2.10 | if (data->quant <= 0) { |
133 : | if (data->zone && data->zone->mode == XVID_ZONE_QUANT) { | ||
134 : | edgomez | 1.1.2.14 | /* We disable no options in quant zones, as their implementation is |
135 : | * based on the fact we do first pass exactly the same way as the | ||
136 : | * second one to have exact zone size */ | ||
137 : | edgomez | 1.1.2.10 | rc->fq_error += (double)data->zone->increment / (double)data->zone->base; |
138 : | data->quant = (int)rc->fq_error; | ||
139 : | rc->fq_error -= data->quant; | ||
140 : | } else { | ||
141 : | data->quant = 2; | ||
142 : | syskin | 1.1.2.13 | |
143 : | #ifdef FAST1PASS | ||
144 : | edgomez | 1.1.2.14 | /* Given the fact our 2pass algorithm is based on very simple |
145 : | * rules, we can disable some options that are too CPU intensive | ||
146 : | * and do not provide the 2nd pass any benefit */ | ||
147 : | |||
148 : | /* First disable some motion flags */ | ||
149 : | data->motion_flags &= ~XVID_ME_CHROMA_PVOP; | ||
150 : | data->motion_flags &= ~XVID_ME_CHROMA_BVOP; | ||
151 : | data->motion_flags &= ~XVID_ME_USESQUARES16; | ||
152 : | data->motion_flags &= ~XVID_ME_ADVANCEDDIAMOND16; | ||
153 : | data->motion_flags &= ~XVID_ME_EXTSEARCH16; | ||
154 : | |||
155 : | /* And enable fast replacements */ | ||
156 : | data->motion_flags |= XVID_ME_FAST_MODEINTERPOLATE; | ||
157 : | data->motion_flags |= XVID_ME_SKIP_DELTASEARCH; | ||
158 : | data->motion_flags |= XVID_ME_FASTREFINE16; | ||
159 : | data->motion_flags |= XVID_ME_BFRAME_EARLYSTOP; | ||
160 : | |||
161 : | /* Now VOP flags (no fast replacements) */ | ||
162 : | data->vop_flags &= ~XVID_VOP_MODEDECISION_RD; | ||
163 : | data->vop_flags &= ~XVID_VOP_FAST_MODEDECISION_RD; | ||
164 : | data->vop_flags &= ~XVID_VOP_TRELLISQUANT; | ||
165 : | data->vop_flags &= ~XVID_VOP_INTER4V; | ||
166 : | data->vop_flags &= ~XVID_VOP_HQACPRED; | ||
167 : | |||
168 : | /* Finnaly VOL flags | ||
169 : | * | ||
170 : | * NB: Qpel cannot be disable because this option really changes | ||
171 : | * too much the texture data compressibility, and thus the | ||
172 : | * second pass gets confused by too much impredictability | ||
173 : | * of frame sizes, and actually hurts quality */ | ||
174 : | syskin | 1.1.2.13 | data->vol_flags &= ~XVID_VOL_GMC; |
175 : | #endif | ||
176 : | edgomez | 1.1.2.10 | } |
177 : | } | ||
178 : | return(0); | ||
179 : | suxen_drol | 1.1.2.1 | } |
180 : | |||
181 : | |||
182 : | static int rc_2pass1_after(rc_2pass1_t * rc, xvid_plg_data_t * data) | ||
183 : | { | ||
184 : | char type; | ||
185 : | edgomez | 1.1.2.11 | xvid_enc_stats_t *stats = &data->stats; |
186 : | suxen_drol | 1.1.2.1 | |
187 : | /* Frame type in ascii I/P/B */ | ||
188 : | edgomez | 1.1.2.11 | switch(stats->type) { |
189 : | suxen_drol | 1.1.2.1 | case XVID_TYPE_IVOP: |
190 : | type = 'i'; | ||
191 : | break; | ||
192 : | case XVID_TYPE_PVOP: | ||
193 : | type = 'p'; | ||
194 : | break; | ||
195 : | case XVID_TYPE_BVOP: | ||
196 : | type = 'b'; | ||
197 : | break; | ||
198 : | case XVID_TYPE_SVOP: | ||
199 : | type = 's'; | ||
200 : | break; | ||
201 : | default: /* Should not go here */ | ||
202 : | return(XVID_ERR_FAIL); | ||
203 : | } | ||
204 : | |||
205 : | /* write the resulting statistics */ | ||
206 : | |||
207 : | edgomez | 1.1.2.11 | fprintf(rc->stat_file, "%c %d %d %d %d %d %d\n", |
208 : | type, | ||
209 : | stats->quant, | ||
210 : | stats->kblks, | ||
211 : | stats->mblks, | ||
212 : | stats->ublks, | ||
213 : | stats->length, | ||
214 : | stats->hlength); | ||
215 : | suxen_drol | 1.1.2.1 | |
216 : | return(0); | ||
217 : | } | ||
218 : | |||
219 : | |||
220 : | |||
221 : | int xvid_plugin_2pass1(void * handle, int opt, void * param1, void * param2) | ||
222 : | { | ||
223 : | switch(opt) | ||
224 : | { | ||
225 : | case XVID_PLG_INFO : | ||
226 : | syskin | 1.1.2.9 | case XVID_PLG_FRAME : |
227 : | suxen_drol | 1.1.2.1 | return 0; |
228 : | |||
229 : | case XVID_PLG_CREATE : | ||
230 : | return rc_2pass1_create((xvid_plg_create_t*)param1, param2); | ||
231 : | |||
232 : | case XVID_PLG_DESTROY : | ||
233 : | return rc_2pass1_destroy((rc_2pass1_t*)handle, (xvid_plg_destroy_t*)param1); | ||
234 : | |||
235 : | case XVID_PLG_BEFORE : | ||
236 : | return rc_2pass1_before((rc_2pass1_t*)handle, (xvid_plg_data_t*)param1); | ||
237 : | |||
238 : | case XVID_PLG_AFTER : | ||
239 : | return rc_2pass1_after((rc_2pass1_t*)handle, (xvid_plg_data_t*)param1); | ||
240 : | } | ||
241 : | |||
242 : | return XVID_ERR_FAIL; | ||
243 : | } |
No admin address has been configured | ViewVC Help |
Powered by ViewVC 1.0.4 |