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1 : | suxen_drol | 938 | /****************************************************************************** |
2 : | * | ||
3 : | * XviD Bit Rate Controller Library | ||
4 : | * - VBR 2 pass bitrate controler implementation - | ||
5 : | * | ||
6 : | * Copyright (C) 2002 Edouard Gomez <ed.gomez@wanadoo.fr> | ||
7 : | * | ||
8 : | * 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 : | * | ||
11 : | * 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 : | * | ||
16 : | * 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 : | * | ||
21 : | * 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 : | * | ||
25 : | suxen_drol | 1014 | * $Id: plugin_2pass1.c,v 1.1.2.3 2003-05-12 12:33:16 suxen_drol Exp $ |
26 : | suxen_drol | 938 | * |
27 : | *****************************************************************************/ | ||
28 : | |||
29 : | #include <stdio.h> | ||
30 : | |||
31 : | #include "../xvid.h" | ||
32 : | #include "../image/image.h" | ||
33 : | |||
34 : | |||
35 : | /* context struct */ | ||
36 : | typedef struct | ||
37 : | { | ||
38 : | FILE * stat_file; | ||
39 : | suxen_drol | 1014 | |
40 : | double fq_error; | ||
41 : | suxen_drol | 938 | } rc_2pass1_t; |
42 : | |||
43 : | |||
44 : | |||
45 : | static int rc_2pass1_create(xvid_plg_create_t * create, rc_2pass1_t ** handle) | ||
46 : | { | ||
47 : | xvid_plugin_2pass1_t * param = (xvid_plugin_2pass1_t *)create->param; | ||
48 : | rc_2pass1_t * rc; | ||
49 : | |||
50 : | /* check filename */ | ||
51 : | if (param->filename == NULL || param->filename[0] == '\0') | ||
52 : | return XVID_ERR_FAIL; | ||
53 : | |||
54 : | /* allocate context struct */ | ||
55 : | if((rc = malloc(sizeof(rc_2pass1_t))) == NULL) | ||
56 : | return(XVID_ERR_MEMORY); | ||
57 : | |||
58 : | /* Initialize safe defaults for 2pass 1 */ | ||
59 : | rc->stat_file = NULL; | ||
60 : | |||
61 : | /* Open the 1st pass file */ | ||
62 : | if((rc->stat_file = fopen(param->filename, "w+")) == NULL) | ||
63 : | return(XVID_ERR_FAIL); | ||
64 : | |||
65 : | suxen_drol | 1014 | { |
66 : | int i; | ||
67 : | printf("---\n"); | ||
68 : | for (i=0;i<create->num_zones;i++) { | ||
69 : | printf("[%i] %i\n", create->zones[i].frame, create->zones[i].increment); | ||
70 : | } | ||
71 : | printf("---\n"); | ||
72 : | } | ||
73 : | |||
74 : | suxen_drol | 938 | /* |
75 : | * The File Header | ||
76 : | */ | ||
77 : | /* fprintf(rc->stat_file, "# XviD 2pass stat file\n"); | ||
78 : | fprintf(rc->stat_file, "version %i.%i.%i\n",XVID_MAJOR(XVID_VERSION), XVID_MINOR(XVID_VERSION), XVID_PATCH(XVID_VERSION)); | ||
79 : | fprintf(rc->stat_file, "start\n"); | ||
80 : | fprintf(rc->stat_file, "type quantizer length kblocks mblocks ublocks\n"); */ | ||
81 : | suxen_drol | 1014 | |
82 : | rc->fq_error = 0; | ||
83 : | suxen_drol | 938 | |
84 : | *handle = rc; | ||
85 : | return(0); | ||
86 : | } | ||
87 : | |||
88 : | |||
89 : | static int rc_2pass1_destroy(rc_2pass1_t * rc, xvid_plg_destroy_t * destroy) | ||
90 : | { | ||
91 : | fclose(rc->stat_file); | ||
92 : | |||
93 : | free(rc); | ||
94 : | return(0); | ||
95 : | } | ||
96 : | |||
97 : | |||
98 : | static int rc_2pass1_before(rc_2pass1_t * rc, xvid_plg_data_t * data) | ||
99 : | { | ||
100 : | suxen_drol | 1014 | if (data->quant <= 0) { |
101 : | if (data->zone && data->zone->mode == XVID_ZONE_QUANT) { | ||
102 : | rc->fq_error += (double)data->zone->increment / (double)data->zone->base; | ||
103 : | data->quant = (int)rc->fq_error; | ||
104 : | rc->fq_error -= data->quant; | ||
105 : | |||
106 : | }else { | ||
107 : | data->quant = 2; | ||
108 : | } | ||
109 : | } | ||
110 : | suxen_drol | 938 | return 0; |
111 : | } | ||
112 : | |||
113 : | |||
114 : | static int rc_2pass1_after(rc_2pass1_t * rc, xvid_plg_data_t * data) | ||
115 : | { | ||
116 : | char type; | ||
117 : | |||
118 : | /* Frame type in ascii I/P/B */ | ||
119 : | switch(data->type) { | ||
120 : | case XVID_TYPE_IVOP: | ||
121 : | type = 'i'; | ||
122 : | break; | ||
123 : | case XVID_TYPE_PVOP: | ||
124 : | type = 'p'; | ||
125 : | break; | ||
126 : | case XVID_TYPE_BVOP: | ||
127 : | type = 'b'; | ||
128 : | break; | ||
129 : | case XVID_TYPE_SVOP: | ||
130 : | type = 's'; | ||
131 : | break; | ||
132 : | default: /* Should not go here */ | ||
133 : | return(XVID_ERR_FAIL); | ||
134 : | } | ||
135 : | |||
136 : | /* write the resulting statistics */ | ||
137 : | |||
138 : | fprintf(rc->stat_file, "%c %d %d %d %d %d\n", | ||
139 : | type, | ||
140 : | data->quant, | ||
141 : | data->kblks, | ||
142 : | data->mblks, | ||
143 : | suxen_drol | 977 | data->ublks, |
144 : | data->length); | ||
145 : | suxen_drol | 938 | |
146 : | return(0); | ||
147 : | } | ||
148 : | |||
149 : | |||
150 : | |||
151 : | int xvid_plugin_2pass1(void * handle, int opt, void * param1, void * param2) | ||
152 : | { | ||
153 : | switch(opt) | ||
154 : | { | ||
155 : | case XVID_PLG_INFO : | ||
156 : | return 0; | ||
157 : | |||
158 : | case XVID_PLG_CREATE : | ||
159 : | return rc_2pass1_create((xvid_plg_create_t*)param1, param2); | ||
160 : | |||
161 : | case XVID_PLG_DESTROY : | ||
162 : | return rc_2pass1_destroy((rc_2pass1_t*)handle, (xvid_plg_destroy_t*)param1); | ||
163 : | |||
164 : | case XVID_PLG_BEFORE : | ||
165 : | return rc_2pass1_before((rc_2pass1_t*)handle, (xvid_plg_data_t*)param1); | ||
166 : | |||
167 : | case XVID_PLG_AFTER : | ||
168 : | return rc_2pass1_after((rc_2pass1_t*)handle, (xvid_plg_data_t*)param1); | ||
169 : | } | ||
170 : | |||
171 : | return XVID_ERR_FAIL; | ||
172 : | } |
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