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
|
/********************************************************************
* *
* THIS FILE IS PART OF THE OggTheora SOFTWARE CODEC SOURCE CODE. *
* USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS *
* GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE *
* IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING. *
* *
* THE Theora SOURCE CODE IS COPYRIGHT (C) 2002-2009 *
* by the Xiph.Org Foundation http://www.xiph.org/ *
* *
********************************************************************
function: routines for validating encoder granulepos generation
last mod: $Id: granulepos_theora.c 16503 2009-08-22 18:14:02Z giles $
********************************************************************/
#include <stdlib.h>
#include <theora/theora.h>
#include <math.h>
#include "tests.h"
static int ilog(unsigned int v){
int ret=0;
while(v){
ret++;
v>>=1;
}
return(ret);
}
static int
granulepos_test_encode (int frequency, int auto_p)
{
theora_info ti;
theora_state th;
int result;
int frame, tframe, keyframe, keydist;
int shift;
double rate, ttime;
yuv_buffer yuv;
unsigned char *framedata;
ogg_packet op;
long long int last_granule = -1;
/* INFO ("+ Initializing theora_info struct"); */
theora_info_init (&ti);
ti.width = 32;
ti.height = 32;
ti.frame_width = ti.width;
ti.frame_height = ti.frame_height;
ti.offset_x = 0;
ti.offset_y = 0;
ti.fps_numerator = 16;
ti.fps_denominator = 1;
ti.aspect_numerator = 1;
ti.aspect_denominator = 1;
ti.colorspace = OC_CS_UNSPECIFIED;
ti.pixelformat = OC_PF_420;
ti.target_bitrate = 0;
ti.quality = 16;
ti.dropframes_p = 0;
ti.quick_p = 1;
/* check variations of automatic or forced keyframe choice */
ti.keyframe_auto_p = auto_p;
/* check with variations of the maximum gap */
ti.keyframe_frequency = frequency;
ti.keyframe_frequency_force = frequency;
ti.keyframe_data_target_bitrate = ti.target_bitrate * 1.5;
ti.keyframe_auto_threshold = 80;
ti.keyframe_mindistance = MIN(8, frequency);
ti.noise_sensitivity = 1;
/* INFO ("+ Initializing theora_state for encoding"); */
result = theora_encode_init (&th, &ti);
if (result == OC_DISABLED) {
INFO ("+ Clearing theora_state");
theora_clear (&th);
} else if (result < 0) {
FAIL ("negative return code initializing encoder");
}
/* INFO ("+ Setting up dummy 4:2:0 frame data"); */
framedata = calloc(ti.height, ti.width);
yuv.y_width = ti.width;
yuv.y_height = ti.height;
yuv.y_stride = ti.width;
yuv.y = framedata;
yuv.uv_width = ti.width / 2;
yuv.uv_height = ti.width / 2;
yuv.uv_stride = ti.width;
yuv.u = framedata;
yuv.v = framedata;
INFO ("+ Checking granulepos generation");
shift = theora_granule_shift(&ti);
rate = (double)ti.fps_denominator/ti.fps_numerator;
for (frame = 0; frame < frequency * 2 + 1; frame++) {
result = theora_encode_YUVin (&th, &yuv);
if (result < 0) {
printf("theora_encode_YUVin() returned %d\n", result);
FAIL ("negative error code submitting frame for compression");
}
theora_encode_packetout (&th, frame >= frequency * 2, &op);
if ((long long int)op.granulepos < last_granule)
FAIL ("encoder returned a decreasing granulepos value");
last_granule = op.granulepos;
keyframe = op.granulepos >> shift;
keydist = op.granulepos - (keyframe << shift);
tframe = theora_granule_frame (&th, op.granulepos);
ttime = theora_granule_time(&th, op.granulepos);
#if DEBUG
printf("++ frame %d granulepos %lld %d:%d %d %.3lfs\n",
frame, (long long int)op.granulepos, keyframe, keydist,
tframe, theora_granule_time (&th, op.granulepos));
#endif
if ((keyframe + keydist) != frame + 1)
FAIL ("encoder granulepos does not map to the correct frame number");
if (tframe != frame)
FAIL ("theora_granule_frame returned incorrect results");
if (fabs(rate*(frame+1) - ttime) > 1.0e-6)
FAIL ("theora_granule_time returned incorrect results");
}
/* clean up */
/* INFO ("+ Freeing dummy frame data"); */
free (framedata);
/* INFO ("+ Clearing theora_info struct"); */
theora_info_clear (&ti);
/* INFO ("+ Clearing theora_state"); */
theora_clear (&th);
return 0;
}
int main(int argc, char *argv[])
{
granulepos_test_encode (1, 1);
granulepos_test_encode (2, 1);
granulepos_test_encode (3, 1);
granulepos_test_encode (4, 1);
granulepos_test_encode (8, 1);
granulepos_test_encode (64, 1);
exit (0);
}
|
