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
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
|
/*
* LGPL
*/
/*
* typical parsed command line:
* msmpeg4:bitrate=720000:qmax=16
*
*/
#include "avcodec.h"
#ifdef OPTS_MAIN
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#endif
/*
* todo - use for decoder options also
*/
static int parse_bool(avc_config_t* c, char* s)
{
int b = 1; /* by default -on- when present */
if (s) {
if (!strcasecmp(s, "off") || !strcasecmp(s, "false")
|| !strcmp(s, "0"))
b = 0;
else if (!strcasecmp(s, "on") || !strcasecmp(s, "true")
|| !strcmp(s, "1"))
b = 1;
else
return -1;
}
if (c && c->val)
*(int*)(c->val) = b;
return 0;
}
static int parse_double(avc_config_t* c, char* s)
{
double d;
if (!s)
return -1;
d = atof(s);
if (c->min != c->max) {
if (d < c->min || d > c->max) {
fprintf(stderr, "Option: %s double value: %f out of range <%f, %f>\n",
c->name, d, c->min, c->max);
return -1;
}
}
if (c && c->val)
*(double*)(c->val) = d;
return 0;
}
static int parse_int(avc_config_t* c, char* s)
{
int i;
if (!s)
return -1;
i = atoi(s);
if (c->min != c->max) {
if (i < (int)c->min || i > (int)c->max) {
fprintf(stderr, "Option: %s integer value: %d out of range <%d, %d>\n",
c->name, i, (int)c->min, (int)c->max);
return -1;
}
}
if (c && c->val)
*(int*)(c->val) = i;
return 0;
}
static int parse_string(AVCodecContext* avctx, avc_config_t* c, char* s)
{
if (!s)
return -1;
if (c->type == FF_CONF_TYPE_RCOVERIDE) {
int sf, ef, qs;
float qf;
if (sscanf(s, "%d,%d,%d,%f", &sf, &ef, &qs, &qf) == 4 && sf < ef) {
RcOverride* o;
*((RcOverride**)c->val) =
realloc(*((RcOverride**)c->val),
sizeof(RcOverride) * (avctx->rc_override_count + 1));
o = *((RcOverride**)c->val) + avctx->rc_override_count++;
o->start_frame = sf;
o->end_frame = ef;
o->qscale = qs;
o->quality_factor = qf;
//printf("parsed Rc: %d,%d,%d,%f (%d)\n", sf,ef,qs,qf, avctx->rc_override_count);
} else {
printf("incorrect/unparsable Rc: \"%s\"\n", s);
}
} else
(char*)(c->val) = strdup(s);
return 0;
}
static int parse(AVCodecContext* avctx, avc_config_t* config, char* str)
{
while (str && *str) {
avc_config_t* c = config;
char* e = strchr(str, ':');
char* p;
if (e)
*e++ = 0;
p = strchr(str, '=');
if (p)
*p++ = 0;
while (c->name) {
if (!strcmp(c->name, str)) {
switch (c->type & FF_CONF_TYPE_MASK) {
case FF_CONF_TYPE_BOOL:
parse_bool(c, p);
break;
case FF_CONF_TYPE_DOUBLE:
parse_double(c, p);
break;
case FF_CONF_TYPE_INT:
parse_int(c, p);
break;
case FF_CONF_TYPE_STRING:
parse_string(avctx, c, p);
break;
default:
abort();
break;
}
}
c++;
}
str = e;
}
return 0;
}
/**
*
* \param avctx where to store parsed results
* \param str string with options for parsing
* or selectional string (pick only options appliable
* for codec - use ,msmpeg4, (with commas to avoid mismatch)
* \param config allocated avc_config_t for external parsing
* i.e. external program might learn about all available
* options for given codec
**/
void avcodec_getopt(AVCodecContext* avctx, const char* str, avc_config_t** config)
{
AVCodecContext avctx_tmp;
AVCodecContext* ctx = (avctx) ? avctx : &avctx_tmp;
static const char* class_h263 = ",msmpeg4,";
//"huffyuv,wmv1,msmpeg4v2,msmpeg4,mpeg4,mpeg1,mpeg1video,mjpeg,rv10,h263,h263p"
avc_config_t cnf[] =
{
// FIXME: sorted by importance!!!
// expert option should follow more common ones
{
"bitrate", "desired video bitrate",
FF_CONF_TYPE_INT, &ctx->bit_rate, 4, 240000000, 800000, NULL, class_h263
}, {
"vhq", "very high quality",
FF_CONF_TYPE_FLAG, &ctx->flags, 0, CODEC_FLAG_HQ, 0, NULL, class_h263
}, {
"ratetol", "number of bits the bitstream is allowed to diverge from the reference"
"the reference can be CBR (for CBR pass1) or VBR (for pass2)",
FF_CONF_TYPE_INT, &ctx->bit_rate_tolerance, 4, 240000000, 8000, NULL, class_h263
}, {
"qmin", "minimum quantizer", FF_CONF_TYPE_INT, &ctx->qmin, 1, 31, 2, NULL, class_h263
}, {
"qmax", "maximum qunatizer", FF_CONF_TYPE_INT, &ctx->qmax, 1, 31, 31, NULL, class_h263
}, {
"rc_eq", "rate control equation",
FF_CONF_TYPE_STRING, &ctx->rc_eq, 0, 0, 0, "tex^qComp" /* FILLME options */, class_h263
}, {
"rc_minrate", "rate control minimum bitrate",
FF_CONF_TYPE_INT, &ctx->rc_min_rate, 4, 24000000, 0, NULL, class_h263
}, {
"rc_maxrate", "rate control maximum bitrate",
FF_CONF_TYPE_INT, &ctx->rc_max_rate, 4, 24000000, 0, NULL, class_h263
}, {
"psnr", "calculate PSNR of compressed frames",
FF_CONF_TYPE_FLAG, &ctx->flags, 0, CODEC_FLAG_PSNR, 0, NULL, class_h263
}, {
"rc_override", "ratecontrol override (=startframe,endframe,qscale,quality_factor)",
FF_CONF_TYPE_RCOVERIDE, &ctx->rc_override, 0, 0, 0, "0,0,0,0", class_h263
},
{ NULL, NULL, 0, NULL, 0, 0, 0, NULL, NULL }
};
if (config) {
*config = malloc(sizeof(cnf));
if (*config) {
avc_config_t* src = cnf;
avc_config_t* dst = *config;
while (src->name) {
if (!str || !src->supported || strstr(src->supported, str))
memcpy(dst++, src, sizeof(avc_config_t));
src++;
}
memset(dst, 0, sizeof(avc_config_t));
}
} else if (str) {
char* s = strdup(str);
if (s) {
parse(avctx, cnf, s);
free(s);
}
}
}
#ifdef OPTS_MAIN
/*
* API test -
* arg1: options
* arg2: codec type
*
* compile standalone: make CFLAGS="-DOPTS_MAIN" opts
*/
int main(int argc, char* argv[])
{
AVCodecContext avctx;
avc_config_t* config;
char* def = malloc(5000);
const char* col = "";
int i = 0;
memset(&avctx, 0, sizeof(avctx));
*def = 0;
avcodec_getopt(&avctx, argv[1], NULL);
avcodec_getopt(NULL, (argc > 2) ? argv[2] : NULL, &config);
if (config)
while (config->name) {
int t = config->type & FF_CONF_TYPE_MASK;
printf("Config %s %s\n", config->name,
t == FF_CONF_TYPE_BOOL ? "bool" :
t == FF_CONF_TYPE_DOUBLE ? "double" :
t == FF_CONF_TYPE_INT ? "integer" :
t == FF_CONF_TYPE_STRING ? "string" :
"unknown??");
switch (t) {
case FF_CONF_TYPE_BOOL:
i += sprintf(def + i, "%s%s=%s",
col, config->name,
config->defval != 0. ? "on" : "off");
break;
case FF_CONF_TYPE_DOUBLE:
i += sprintf(def + i, "%s%s=%f",
col, config->name, config->defval);
break;
case FF_CONF_TYPE_INT:
i += sprintf(def + i, "%s%s=%d",
col, config->name, (int) config->defval);
break;
case FF_CONF_TYPE_STRING:
i += sprintf(def + i, "%s%s=%s",
col, config->name, config->defstr);
break;
}
col = ":";
config++;
}
printf("Default Options: %s\n", def);
return 0;
}
#endif
|
