1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
|
/*
* Xvid rate control wrapper for lavc video encoders
*
* Copyright (c) 2006 Michael Niedermayer <michaelni@gmx.at>
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "config.h"
#if HAVE_IO_H
#include <io.h>
#endif
#if HAVE_UNISTD_H
#include <unistd.h>
#endif
#include <xvid.h>
#include "libavutil/attributes.h"
#include "libavutil/file.h"
#include "avcodec.h"
#include "libxvid.h"
#include "mpegvideo.h"
av_cold int ff_xvid_rate_control_init(MpegEncContext *s)
{
char *tmp_name;
int fd, i;
xvid_plg_create_t xvid_plg_create = { 0 };
xvid_plugin_2pass2_t xvid_2pass2 = { 0 };
fd = av_tempfile("xvidrc.", &tmp_name, 0, s->avctx);
if (fd == -1) {
av_log(NULL, AV_LOG_ERROR, "Can't create temporary pass2 file.\n");
return -1;
}
for (i = 0; i < s->rc_context.num_entries; i++) {
static const char frame_types[] = " ipbs";
char tmp[256];
RateControlEntry *rce;
rce = &s->rc_context.entry[i];
snprintf(tmp, sizeof(tmp), "%c %d %d %d %d %d %d\n",
frame_types[rce->pict_type],
(int) lrintf(rce->qscale / FF_QP2LAMBDA),
rce->i_count, s->mb_num - rce->i_count - rce->skip_count,
rce->skip_count,
(rce->i_tex_bits + rce->p_tex_bits + rce->misc_bits + 7) / 8,
(rce->header_bits + rce->mv_bits + 7) / 8);
if (write(fd, tmp, strlen(tmp)) < 0) {
int ret = AVERROR(errno);
av_log(NULL, AV_LOG_ERROR, "Error %s writing 2pass logfile\n", av_err2str(ret));
av_free(tmp_name);
close(fd);
return ret;
}
}
close(fd);
xvid_2pass2.version = XVID_MAKE_VERSION(1, 1, 0);
xvid_2pass2.filename = tmp_name;
xvid_2pass2.bitrate = s->avctx->bit_rate;
xvid_2pass2.vbv_size = s->avctx->rc_buffer_size;
xvid_2pass2.vbv_maxrate = s->avctx->rc_max_rate;
xvid_2pass2.vbv_initial = s->avctx->rc_initial_buffer_occupancy;
xvid_plg_create.version = XVID_MAKE_VERSION(1, 1, 0);
xvid_plg_create.fbase = s->avctx->time_base.den;
xvid_plg_create.fincr = s->avctx->time_base.num;
xvid_plg_create.param = &xvid_2pass2;
if (xvid_plugin_2pass2(NULL, XVID_PLG_CREATE, &xvid_plg_create,
&s->rc_context.non_lavc_opaque) < 0) {
av_log(NULL, AV_LOG_ERROR, "xvid_plugin_2pass2 failed\n");
return -1;
}
return 0;
}
float ff_xvid_rate_estimate_qscale(MpegEncContext *s, int dry_run)
{
xvid_plg_data_t xvid_plg_data = { 0 };
xvid_plg_data.version = XVID_MAKE_VERSION(1, 1, 0);
xvid_plg_data.width = s->width;
xvid_plg_data.height = s->height;
xvid_plg_data.mb_width = s->mb_width;
xvid_plg_data.mb_height = s->mb_height;
xvid_plg_data.fbase = s->avctx->time_base.den;
xvid_plg_data.fincr = s->avctx->time_base.num;
xvid_plg_data.min_quant[0] = s->avctx->qmin;
xvid_plg_data.min_quant[1] = s->avctx->qmin;
xvid_plg_data.min_quant[2] = s->avctx->qmin; // FIXME i/b factor & offset
xvid_plg_data.max_quant[0] = s->avctx->qmax;
xvid_plg_data.max_quant[1] = s->avctx->qmax;
xvid_plg_data.max_quant[2] = s->avctx->qmax; // FIXME i/b factor & offset
xvid_plg_data.bquant_offset = 0; // 100 * s->avctx->b_quant_offset;
xvid_plg_data.bquant_ratio = 100; // * s->avctx->b_quant_factor;
if (!s->rc_context.dry_run_qscale) {
if (s->picture_number) {
xvid_plg_data.length =
xvid_plg_data.stats.length = (s->frame_bits + 7) / 8;
xvid_plg_data.frame_num = s->rc_context.last_picture_number;
xvid_plg_data.quant = s->qscale;
xvid_plg_data.type = s->last_pict_type;
if (xvid_plugin_2pass2(s->rc_context.non_lavc_opaque,
XVID_PLG_AFTER, &xvid_plg_data, NULL)) {
av_log(s->avctx, AV_LOG_ERROR,
"xvid_plugin_2pass2(handle, XVID_PLG_AFTER, ...) FAILED\n");
return -1;
}
}
s->rc_context.last_picture_number =
xvid_plg_data.frame_num = s->picture_number;
xvid_plg_data.quant = 0;
if (xvid_plugin_2pass2(s->rc_context.non_lavc_opaque,
XVID_PLG_BEFORE, &xvid_plg_data, NULL)) {
av_log(s->avctx, AV_LOG_ERROR,
"xvid_plugin_2pass2(handle, XVID_PLG_BEFORE, ...) FAILED\n");
return -1;
}
s->rc_context.dry_run_qscale = xvid_plg_data.quant;
}
xvid_plg_data.quant = s->rc_context.dry_run_qscale;
if (!dry_run)
s->rc_context.dry_run_qscale = 0;
// FIXME this is not exactly identical to Xvid
if (s->pict_type == AV_PICTURE_TYPE_B)
return xvid_plg_data.quant * FF_QP2LAMBDA * s->avctx->b_quant_factor +
s->avctx->b_quant_offset;
else
return xvid_plg_data.quant * FF_QP2LAMBDA;
}
av_cold void ff_xvid_rate_control_uninit(MpegEncContext *s)
{
xvid_plg_destroy_t xvid_plg_destroy;
xvid_plugin_2pass2(s->rc_context.non_lavc_opaque, XVID_PLG_DESTROY,
&xvid_plg_destroy, NULL);
}
|
