blob: 076c32c413564535d7e94ef2b8b3250473db2594
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/internal.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 = avpriv_tempfile("xvidrc.", &tmp_name, 0, s->avctx); |
50 | if (fd < 0) { |
51 | av_log(s, AV_LOG_ERROR, "Can't create temporary pass2 file.\n"); |
52 | return fd; |
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) { |
71 | int ret = AVERROR(errno); |
72 | av_log(s, AV_LOG_ERROR, "Error %s writing 2pass logfile\n", av_err2str(ret)); |
73 | av_free(tmp_name); |
74 | close(fd); |
75 | return ret; |
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(s, 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, 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, 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 | } |
165 |