Parent Directory | Revision Log
Revision 1.1.2.13 - (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 : | syskin | 1.1.2.13 | * $Id: plugin_2pass1.c,v 1.1.2.12 2003/12/20 15:30:03 edgomez Exp $ |
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 : | syskin | 1.1.2.13 | #define FAST1PASS |
38 : | |||
39 : | |||
40 : | suxen_drol | 1.1.2.1 | /* context struct */ |
41 : | typedef struct | ||
42 : | { | ||
43 : | FILE * stat_file; | ||
44 : | suxen_drol | 1.1.2.3 | |
45 : | double fq_error; | ||
46 : | suxen_drol | 1.1.2.1 | } rc_2pass1_t; |
47 : | |||
48 : | |||
49 : | |||
50 : | static int rc_2pass1_create(xvid_plg_create_t * create, rc_2pass1_t ** handle) | ||
51 : | { | ||
52 : | xvid_plugin_2pass1_t * param = (xvid_plugin_2pass1_t *)create->param; | ||
53 : | rc_2pass1_t * rc; | ||
54 : | |||
55 : | /* check filename */ | ||
56 : | edgomez | 1.1.2.6 | if ((param->filename == NULL) || |
57 : | (param->filename != NULL && param->filename[0] == '\0')) | ||
58 : | suxen_drol | 1.1.2.1 | return XVID_ERR_FAIL; |
59 : | |||
60 : | /* allocate context struct */ | ||
61 : | if((rc = malloc(sizeof(rc_2pass1_t))) == NULL) | ||
62 : | return(XVID_ERR_MEMORY); | ||
63 : | |||
64 : | edgomez | 1.1.2.7 | /* Initialize safe defaults for 2pass 1 */ |
65 : | suxen_drol | 1.1.2.1 | rc->stat_file = NULL; |
66 : | |||
67 : | /* Open the 1st pass file */ | ||
68 : | edgomez | 1.1.2.8 | if((rc->stat_file = fopen(param->filename, "w+b")) == NULL) |
69 : | suxen_drol | 1.1.2.1 | return(XVID_ERR_FAIL); |
70 : | suxen_drol | 1.1.2.3 | |
71 : | edgomez | 1.1.2.12 | /* I swear xvidcore isn't buggy, but when using mencoder+xvid4 i observe |
72 : | * this weird bug. | ||
73 : | * | ||
74 : | * Symptoms: The stats file grows until it's fclosed, but at this moment | ||
75 : | * a large part of the file is filled by 0x00 bytes w/o any | ||
76 : | * reasonable cause. The stats file is then completly unusable | ||
77 : | * | ||
78 : | * So far, i think i found "the why": | ||
79 : | * - take a MPEG stream containing 2 sequences (concatenate 2 MPEG files | ||
80 : | * together) | ||
81 : | * - Encode this MPEG file | ||
82 : | * | ||
83 : | * It should trigger the bug | ||
84 : | * | ||
85 : | * I think this is caused by some kind of race condition on mencoder module | ||
86 : | * start/stop. | ||
87 : | * - mencoder encodes the first sequence | ||
88 : | * + xvid4 module opens xvid-twopass.stats and writes stats in it. | ||
89 : | * - mencoder detects the second sequence and initialize a second | ||
90 : | * module and stops the old encoder | ||
91 : | * + new xvid4 module opens a new xvid-twopass.stats, old xvid4 | ||
92 : | * module closes it | ||
93 : | * | ||
94 : | * This is IT, got a racing condition. | ||
95 : | * Unbuffered IO, may help ... */ | ||
96 : | setbuf(rc->stat_file, NULL); | ||
97 : | |||
98 : | suxen_drol | 1.1.2.1 | /* |
99 : | * The File Header | ||
100 : | */ | ||
101 : | edgomez | 1.1.2.8 | fprintf(rc->stat_file, "# XviD 2pass stat file (core version %d.%d.%d)\n", |
102 : | XVID_VERSION_MAJOR(XVID_VERSION), | ||
103 : | XVID_VERSION_MINOR(XVID_VERSION), | ||
104 : | XVID_VERSION_PATCH(XVID_VERSION)); | ||
105 : | fprintf(rc->stat_file, "# Please do not modify this file\n\n"); | ||
106 : | edgomez | 1.1.2.7 | |
107 : | suxen_drol | 1.1.2.3 | rc->fq_error = 0; |
108 : | suxen_drol | 1.1.2.1 | |
109 : | *handle = rc; | ||
110 : | return(0); | ||
111 : | } | ||
112 : | |||
113 : | |||
114 : | static int rc_2pass1_destroy(rc_2pass1_t * rc, xvid_plg_destroy_t * destroy) | ||
115 : | { | ||
116 : | edgomez | 1.1.2.12 | if (rc->stat_file) { |
117 : | if (fclose(rc->stat_file) == EOF) { | ||
118 : | DPRINTF(XVID_DEBUG_RC, "Error closing stats file (%s)", strerror(errno)); | ||
119 : | } | ||
120 : | } | ||
121 : | rc->stat_file = NULL; /* Just a paranoid reset */ | ||
122 : | free(rc); /* as the container structure is freed anyway */ | ||
123 : | suxen_drol | 1.1.2.1 | return(0); |
124 : | } | ||
125 : | |||
126 : | |||
127 : | static int rc_2pass1_before(rc_2pass1_t * rc, xvid_plg_data_t * data) | ||
128 : | { | ||
129 : | edgomez | 1.1.2.10 | if (data->quant <= 0) { |
130 : | if (data->zone && data->zone->mode == XVID_ZONE_QUANT) { | ||
131 : | rc->fq_error += (double)data->zone->increment / (double)data->zone->base; | ||
132 : | data->quant = (int)rc->fq_error; | ||
133 : | rc->fq_error -= data->quant; | ||
134 : | } else { | ||
135 : | data->quant = 2; | ||
136 : | syskin | 1.1.2.13 | |
137 : | #ifdef FAST1PASS | ||
138 : | |||
139 : | data->motion_flags &= ~(XVID_ME_CHROMA_PVOP + XVID_ME_CHROMA_BVOP + XVID_ME_USESQUARES16 | ||
140 : | + XVID_ME_ADVANCEDDIAMOND16 + XVID_ME_EXTSEARCH16); | ||
141 : | |||
142 : | data->motion_flags |= XVID_ME_FAST_MODEINTERPOLATE + XVID_ME_SKIP_DELTASEARCH | ||
143 : | + XVID_ME_FASTREFINE16 + XVID_ME_BFRAME_EARLYSTOP; | ||
144 : | |||
145 : | data->vop_flags &= ~(XVID_VOP_MODEDECISION_RD + XVID_VOP_FAST_MODEDECISION_RD | ||
146 : | + XVID_VOP_TRELLISQUANT + XVID_VOP_INTER4V + XVID_VOP_HQACPRED); | ||
147 : | |||
148 : | data->vol_flags &= ~XVID_VOL_GMC; | ||
149 : | #endif | ||
150 : | edgomez | 1.1.2.10 | } |
151 : | } | ||
152 : | return(0); | ||
153 : | suxen_drol | 1.1.2.1 | } |
154 : | |||
155 : | |||
156 : | static int rc_2pass1_after(rc_2pass1_t * rc, xvid_plg_data_t * data) | ||
157 : | { | ||
158 : | char type; | ||
159 : | edgomez | 1.1.2.11 | xvid_enc_stats_t *stats = &data->stats; |
160 : | suxen_drol | 1.1.2.1 | |
161 : | /* Frame type in ascii I/P/B */ | ||
162 : | edgomez | 1.1.2.11 | switch(stats->type) { |
163 : | suxen_drol | 1.1.2.1 | case XVID_TYPE_IVOP: |
164 : | type = 'i'; | ||
165 : | break; | ||
166 : | case XVID_TYPE_PVOP: | ||
167 : | type = 'p'; | ||
168 : | break; | ||
169 : | case XVID_TYPE_BVOP: | ||
170 : | type = 'b'; | ||
171 : | break; | ||
172 : | case XVID_TYPE_SVOP: | ||
173 : | type = 's'; | ||
174 : | break; | ||
175 : | default: /* Should not go here */ | ||
176 : | return(XVID_ERR_FAIL); | ||
177 : | } | ||
178 : | |||
179 : | /* write the resulting statistics */ | ||
180 : | |||
181 : | edgomez | 1.1.2.11 | fprintf(rc->stat_file, "%c %d %d %d %d %d %d\n", |
182 : | type, | ||
183 : | stats->quant, | ||
184 : | stats->kblks, | ||
185 : | stats->mblks, | ||
186 : | stats->ublks, | ||
187 : | stats->length, | ||
188 : | stats->hlength); | ||
189 : | suxen_drol | 1.1.2.1 | |
190 : | return(0); | ||
191 : | } | ||
192 : | |||
193 : | |||
194 : | |||
195 : | int xvid_plugin_2pass1(void * handle, int opt, void * param1, void * param2) | ||
196 : | { | ||
197 : | switch(opt) | ||
198 : | { | ||
199 : | case XVID_PLG_INFO : | ||
200 : | syskin | 1.1.2.9 | case XVID_PLG_FRAME : |
201 : | suxen_drol | 1.1.2.1 | return 0; |
202 : | |||
203 : | case XVID_PLG_CREATE : | ||
204 : | return rc_2pass1_create((xvid_plg_create_t*)param1, param2); | ||
205 : | |||
206 : | case XVID_PLG_DESTROY : | ||
207 : | return rc_2pass1_destroy((rc_2pass1_t*)handle, (xvid_plg_destroy_t*)param1); | ||
208 : | |||
209 : | case XVID_PLG_BEFORE : | ||
210 : | return rc_2pass1_before((rc_2pass1_t*)handle, (xvid_plg_data_t*)param1); | ||
211 : | |||
212 : | case XVID_PLG_AFTER : | ||
213 : | return rc_2pass1_after((rc_2pass1_t*)handle, (xvid_plg_data_t*)param1); | ||
214 : | } | ||
215 : | |||
216 : | return XVID_ERR_FAIL; | ||
217 : | } |
No admin address has been configured | ViewVC Help |
Powered by ViewVC 1.0.4 |