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2ba45a60 DM |
1 | /* |
2 | * Xvid rate control wrapper for lavc video encoders | |
3 | * | |
4 | * Copyright (c) 2006 Michael Niedermayer <michaelni@gmx.at> | |
5 | * | |
6 | * This file is part of FFmpeg. | |
7 | * | |
8 | * FFmpeg is free software; you can redistribute it and/or | |
9 | * modify it under the terms of the GNU Lesser General Public | |
10 | * License as published by the Free Software Foundation; either | |
11 | * version 2.1 of the License, or (at your option) any later version. | |
12 | * | |
13 | * FFmpeg is distributed in the hope that it will be useful, | |
14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
16 | * Lesser General Public License for more details. | |
17 | * | |
18 | * You should have received a copy of the GNU Lesser General Public | |
19 | * License along with FFmpeg; if not, write to the Free Software | |
20 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | |
21 | */ | |
22 | ||
23 | #include "config.h" | |
24 | ||
25 | #if HAVE_IO_H | |
26 | #include <io.h> | |
27 | #endif | |
28 | ||
29 | #if HAVE_UNISTD_H | |
30 | #include <unistd.h> | |
31 | #endif | |
32 | ||
33 | #include <xvid.h> | |
34 | ||
35 | #include "libavutil/attributes.h" | |
36 | #include "libavutil/file.h" | |
37 | ||
38 | #include "avcodec.h" | |
39 | #include "libxvid.h" | |
40 | #include "mpegvideo.h" | |
41 | ||
42 | av_cold int ff_xvid_rate_control_init(MpegEncContext *s) | |
43 | { | |
44 | char *tmp_name; | |
45 | int fd, i; | |
46 | xvid_plg_create_t xvid_plg_create = { 0 }; | |
47 | xvid_plugin_2pass2_t xvid_2pass2 = { 0 }; | |
48 | ||
49 | fd = av_tempfile("xvidrc.", &tmp_name, 0, s->avctx); | |
50 | if (fd == -1) { | |
51 | av_log(NULL, AV_LOG_ERROR, "Can't create temporary pass2 file.\n"); | |
52 | return -1; | |
53 | } | |
54 | ||
55 | for (i = 0; i < s->rc_context.num_entries; i++) { | |
56 | static const char frame_types[] = " ipbs"; | |
57 | char tmp[256]; | |
58 | RateControlEntry *rce; | |
59 | ||
60 | rce = &s->rc_context.entry[i]; | |
61 | ||
62 | snprintf(tmp, sizeof(tmp), "%c %d %d %d %d %d %d\n", | |
63 | frame_types[rce->pict_type], | |
64 | (int) lrintf(rce->qscale / FF_QP2LAMBDA), | |
65 | rce->i_count, s->mb_num - rce->i_count - rce->skip_count, | |
66 | rce->skip_count, | |
67 | (rce->i_tex_bits + rce->p_tex_bits + rce->misc_bits + 7) / 8, | |
68 | (rce->header_bits + rce->mv_bits + 7) / 8); | |
69 | ||
70 | if (write(fd, tmp, strlen(tmp)) < 0) { | |
f6fa7814 | 71 | int ret = AVERROR(errno); |
2ba45a60 DM |
72 | av_log(NULL, AV_LOG_ERROR, "Error %s writing 2pass logfile\n", strerror(errno)); |
73 | av_free(tmp_name); | |
74 | close(fd); | |
f6fa7814 | 75 | return ret; |
2ba45a60 DM |
76 | } |
77 | } | |
78 | ||
79 | close(fd); | |
80 | ||
81 | xvid_2pass2.version = XVID_MAKE_VERSION(1, 1, 0); | |
82 | xvid_2pass2.filename = tmp_name; | |
83 | xvid_2pass2.bitrate = s->avctx->bit_rate; | |
84 | xvid_2pass2.vbv_size = s->avctx->rc_buffer_size; | |
85 | xvid_2pass2.vbv_maxrate = s->avctx->rc_max_rate; | |
86 | xvid_2pass2.vbv_initial = s->avctx->rc_initial_buffer_occupancy; | |
87 | ||
88 | xvid_plg_create.version = XVID_MAKE_VERSION(1, 1, 0); | |
89 | xvid_plg_create.fbase = s->avctx->time_base.den; | |
90 | xvid_plg_create.fincr = s->avctx->time_base.num; | |
91 | xvid_plg_create.param = &xvid_2pass2; | |
92 | ||
93 | if (xvid_plugin_2pass2(NULL, XVID_PLG_CREATE, &xvid_plg_create, | |
94 | &s->rc_context.non_lavc_opaque) < 0) { | |
95 | av_log(NULL, AV_LOG_ERROR, "xvid_plugin_2pass2 failed\n"); | |
96 | return -1; | |
97 | } | |
98 | return 0; | |
99 | } | |
100 | ||
101 | float ff_xvid_rate_estimate_qscale(MpegEncContext *s, int dry_run) | |
102 | { | |
103 | xvid_plg_data_t xvid_plg_data = { 0 }; | |
104 | ||
105 | xvid_plg_data.version = XVID_MAKE_VERSION(1, 1, 0); | |
106 | xvid_plg_data.width = s->width; | |
107 | xvid_plg_data.height = s->height; | |
108 | xvid_plg_data.mb_width = s->mb_width; | |
109 | xvid_plg_data.mb_height = s->mb_height; | |
110 | xvid_plg_data.fbase = s->avctx->time_base.den; | |
111 | xvid_plg_data.fincr = s->avctx->time_base.num; | |
112 | xvid_plg_data.min_quant[0] = s->avctx->qmin; | |
113 | xvid_plg_data.min_quant[1] = s->avctx->qmin; | |
114 | xvid_plg_data.min_quant[2] = s->avctx->qmin; // FIXME i/b factor & offset | |
115 | xvid_plg_data.max_quant[0] = s->avctx->qmax; | |
116 | xvid_plg_data.max_quant[1] = s->avctx->qmax; | |
117 | xvid_plg_data.max_quant[2] = s->avctx->qmax; // FIXME i/b factor & offset | |
118 | xvid_plg_data.bquant_offset = 0; // 100 * s->avctx->b_quant_offset; | |
119 | xvid_plg_data.bquant_ratio = 100; // * s->avctx->b_quant_factor; | |
120 | ||
121 | if (!s->rc_context.dry_run_qscale) { | |
122 | if (s->picture_number) { | |
123 | xvid_plg_data.length = | |
124 | xvid_plg_data.stats.length = (s->frame_bits + 7) / 8; | |
125 | xvid_plg_data.frame_num = s->rc_context.last_picture_number; | |
126 | xvid_plg_data.quant = s->qscale; | |
127 | xvid_plg_data.type = s->last_pict_type; | |
128 | if (xvid_plugin_2pass2(s->rc_context.non_lavc_opaque, | |
129 | XVID_PLG_AFTER, &xvid_plg_data, NULL)) { | |
130 | av_log(s->avctx, AV_LOG_ERROR, | |
131 | "xvid_plugin_2pass2(handle, XVID_PLG_AFTER, ...) FAILED\n"); | |
132 | return -1; | |
133 | } | |
134 | } | |
135 | s->rc_context.last_picture_number = | |
136 | xvid_plg_data.frame_num = s->picture_number; | |
137 | xvid_plg_data.quant = 0; | |
138 | if (xvid_plugin_2pass2(s->rc_context.non_lavc_opaque, | |
139 | XVID_PLG_BEFORE, &xvid_plg_data, NULL)) { | |
140 | av_log(s->avctx, AV_LOG_ERROR, | |
141 | "xvid_plugin_2pass2(handle, XVID_PLG_BEFORE, ...) FAILED\n"); | |
142 | return -1; | |
143 | } | |
144 | s->rc_context.dry_run_qscale = xvid_plg_data.quant; | |
145 | } | |
146 | xvid_plg_data.quant = s->rc_context.dry_run_qscale; | |
147 | if (!dry_run) | |
148 | s->rc_context.dry_run_qscale = 0; | |
149 | ||
150 | // FIXME this is not exactly identical to Xvid | |
151 | if (s->pict_type == AV_PICTURE_TYPE_B) | |
152 | return xvid_plg_data.quant * FF_QP2LAMBDA * s->avctx->b_quant_factor + | |
153 | s->avctx->b_quant_offset; | |
154 | else | |
155 | return xvid_plg_data.quant * FF_QP2LAMBDA; | |
156 | } | |
157 | ||
158 | av_cold void ff_xvid_rate_control_uninit(MpegEncContext *s) | |
159 | { | |
160 | xvid_plg_destroy_t xvid_plg_destroy; | |
161 | ||
162 | xvid_plugin_2pass2(s->rc_context.non_lavc_opaque, XVID_PLG_DESTROY, | |
163 | &xvid_plg_destroy, NULL); | |
164 | } |