static const AVOption *av_set_number(void *obj, const char *name, double num, int den, int64_t intnum){
const AVOption *o= av_find_opt(obj, name, NULL, 0, 0);
void *dst;
if(!o || o->offset<=0)
return NULL;
if(o->max*den < num*intnum || o->min*den > num*intnum) {
av_log(NULL, AV_LOG_ERROR, "Value %lf for parameter '%s' out of range.\n", num, name);
return NULL;
}
dst= ((uint8_t*)obj) + o->offset;
switch(o->type){
case FF_OPT_TYPE_FLAGS:
case FF_OPT_TYPE_INT: *(int *)dst= llrint(num/den)*intnum; break;
case FF_OPT_TYPE_INT64: *(int64_t *)dst= llrint(num/den)*intnum; break;
case FF_OPT_TYPE_FLOAT: *(float *)dst= num*intnum/den; break;
case FF_OPT_TYPE_DOUBLE:*(double *)dst= num*intnum/den; break;
case FF_OPT_TYPE_RATIONAL:
if((int)num == num) *(AVRational*)dst= (AVRational){num*intnum, den};
else *(AVRational*)dst= av_d2q(num*intnum/den, 1<<24);
break;
default:
return NULL;
}
return o;
}
/**
*
* @param buf a buffer which is used for returning non string values as strings, can be NULL
* @param buf_len allocated length in bytes of buf
*/
const char *av_get_string(void *obj, const char *name, const AVOption **o_out, char *buf, int buf_len){
const AVOption *o= av_find_opt(obj, name, NULL, 0, 0);
void *dst;
uint8_t *bin;
int len, i;
if(!o || o->offset<=0)
return NULL;
if(o->type != FF_OPT_TYPE_STRING && (!buf || !buf_len))
return NULL;
dst= ((uint8_t*)obj) + o->offset;
if(o_out) *o_out= o;
switch(o->type){
case FF_OPT_TYPE_FLAGS: snprintf(buf, buf_len, "0x%08X",*(int *)dst);break;
case FF_OPT_TYPE_INT: snprintf(buf, buf_len, "%d" , *(int *)dst);break;
case FF_OPT_TYPE_INT64: snprintf(buf, buf_len, "%"PRId64, *(int64_t*)dst);break;
case FF_OPT_TYPE_FLOAT: snprintf(buf, buf_len, "%f" , *(float *)dst);break;
case FF_OPT_TYPE_DOUBLE: snprintf(buf, buf_len, "%f" , *(double *)dst);break;
case FF_OPT_TYPE_RATIONAL: snprintf(buf, buf_len, "%d/%d", ((AVRational*)dst)->num, ((AVRational*)dst)->den);break;
case FF_OPT_TYPE_STRING: return *(void**)dst;
case FF_OPT_TYPE_BINARY:
len = *(int*)(((uint8_t *)dst) + sizeof(uint8_t *));
if(len >= (buf_len + 1)/2) return NULL;
bin = *(uint8_t**)dst;
for(i = 0; i < len; i++) snprintf(buf + i*2, 3, "%02X", bin[i]);
break;
default: return NULL;
}
return buf;
}
AVFormatContext *ff_rtp_chain_mux_open(AVFormatContext *s, AVStream *st,
URLContext *handle, int packet_size)
{
AVFormatContext *rtpctx;
int ret;
AVOutputFormat *rtp_format = av_guess_format("rtp", NULL, NULL);
if (!rtp_format)
return NULL;
/* Allocate an AVFormatContext for each output stream */
rtpctx = avformat_alloc_context();
if (!rtpctx)
return NULL;
rtpctx->oformat = rtp_format;
if (!av_new_stream(rtpctx, 0)) {
av_free(rtpctx);
return NULL;
}
/* Copy the max delay setting; the rtp muxer reads this. */
rtpctx->max_delay = s->max_delay;
/* Copy other stream parameters. */
rtpctx->streams[0]->sample_aspect_ratio = st->sample_aspect_ratio;
rtpctx->flags |= s->flags & AVFMT_FLAG_MP4A_LATM;
av_set_parameters(rtpctx, NULL);
/* Copy the rtpflags values straight through */
if (s->oformat->priv_class &&
av_find_opt(s->priv_data, "rtpflags", NULL, 0, 0))
av_set_int(rtpctx->priv_data, "rtpflags",
av_get_int(s->priv_data, "rtpflags", NULL));
/* Set the synchronized start time. */
rtpctx->start_time_realtime = s->start_time_realtime;
avcodec_copy_context(rtpctx->streams[0]->codec, st->codec);
if (handle) {
ffio_fdopen(&rtpctx->pb, handle);
} else
ffio_open_dyn_packet_buf(&rtpctx->pb, packet_size);
ret = avformat_write_header(rtpctx, NULL);
if (ret) {
if (handle) {
avio_close(rtpctx->pb);
} else {
uint8_t *ptr;
avio_close_dyn_buf(rtpctx->pb, &ptr);
av_free(ptr);
}
avformat_free_context(rtpctx);
return NULL;
}
return rtpctx;
}
static int opt_default(const char *opt, const char *arg,
AVCodecContext *avctx, int type) {
int ret = 0;
const AVOption *o = av_find_opt(avctx, opt, NULL, type, type);
if (o != NULL) {
ret = av_set_string3(avctx, opt, arg, 1, NULL);
}
return ret;
}
int opt_default(const char *opt, const char *arg){
int type;
int ret= 0;
const AVOption *o= NULL;
int opt_types[]={AV_OPT_FLAG_VIDEO_PARAM, AV_OPT_FLAG_AUDIO_PARAM, 0, AV_OPT_FLAG_SUBTITLE_PARAM, 0};
for(type=0; type<AVMEDIA_TYPE_NB && ret>= 0; type++){
const AVOption *o2 = av_find_opt(avcodec_opts[0], opt, NULL, opt_types[type], opt_types[type]);
if(o2)
ret = av_set_string3(avcodec_opts[type], opt, arg, 1, &o);
}
if(!o)
ret = av_set_string3(avformat_opts, opt, arg, 1, &o);
if(!o && sws_opts)
ret = av_set_string3(sws_opts, opt, arg, 1, &o);
if(!o){
if(opt[0] == 'a')
ret = av_set_string3(avcodec_opts[AVMEDIA_TYPE_AUDIO], opt+1, arg, 1, &o);
else if(opt[0] == 'v')
ret = av_set_string3(avcodec_opts[AVMEDIA_TYPE_VIDEO], opt+1, arg, 1, &o);
else if(opt[0] == 's')
ret = av_set_string3(avcodec_opts[AVMEDIA_TYPE_SUBTITLE], opt+1, arg, 1, &o);
}
if (o && ret < 0) {
fprintf(stderr, "Invalid value '%s' for option '%s'\n", arg, opt);
exit(1);
}
if (!o) {
fprintf(stderr, "Unrecognized option '%s'\n", opt);
exit(1);
}
// av_log(NULL, AV_LOG_ERROR, "%s:%s: %f 0x%0X\n", opt, arg, av_get_double(avcodec_opts, opt, NULL), (int)av_get_int(avcodec_opts, opt, NULL));
//FIXME we should always use avcodec_opts, ... for storing options so there will not be any need to keep track of what i set over this
opt_names= av_realloc(opt_names, sizeof(void*)*(opt_name_count+1));
opt_names[opt_name_count++]= o->name;
if(avcodec_opts[0]->debug || avformat_opts->debug)
av_log_set_level(AV_LOG_DEBUG);
return 0;
}
void set_context_opts(void *ctx, void *opts_ctx, int flags, AVCodec *codec)
{
int i;
void *priv_ctx=NULL;
if(!strcmp("AVCodecContext", (*(AVClass**)ctx)->class_name)){
AVCodecContext *avctx= ctx;
if(codec && codec->priv_class && avctx->priv_data){
priv_ctx= avctx->priv_data;
}
} else if (!strcmp("AVFormatContext", (*(AVClass**)ctx)->class_name)) {
AVFormatContext *avctx = ctx;
if (avctx->oformat && avctx->oformat->priv_class) {
priv_ctx = avctx->priv_data;
} else if (avctx->iformat && avctx->iformat->priv_class) {
priv_ctx = avctx->priv_data;
}
}
for(i=0; i<opt_name_count; i++){
char buf[256];
const AVOption *opt;
const char *str;
if (priv_ctx) {
if (av_find_opt(priv_ctx, opt_names[i], NULL, flags, flags)) {
if (av_set_string3(priv_ctx, opt_names[i], opt_values[i], 1, NULL) < 0) {
fprintf(stderr, "Invalid value '%s' for option '%s'\n",
opt_names[i], opt_values[i]);
exit(1);
}
} else
goto global;
} else {
global:
str = av_get_string(opts_ctx, opt_names[i], &opt, buf, sizeof(buf));
/* if an option with name opt_names[i] is present in opts_ctx then str is non-NULL */
if (str && ((opt->flags & flags) == flags))
av_set_string3(ctx, opt_names[i], str, 1, NULL);
}
}
}
static int av_get_number(void *obj, const char *name, const AVOption **o_out, double *num, int *den, int64_t *intnum){
const AVOption *o= av_find_opt(obj, name, NULL, 0, 0);
void *dst;
if(!o || o->offset<=0)
goto error;
dst= ((uint8_t*)obj) + o->offset;
if(o_out) *o_out= o;
switch(o->type){
case FF_OPT_TYPE_FLAGS: *intnum= *(unsigned int*)dst;return 0;
case FF_OPT_TYPE_INT: *intnum= *(int *)dst;return 0;
case FF_OPT_TYPE_INT64: *intnum= *(int64_t*)dst;return 0;
case FF_OPT_TYPE_FLOAT: *num= *(float *)dst;return 0;
case FF_OPT_TYPE_DOUBLE: *num= *(double *)dst;return 0;
case FF_OPT_TYPE_RATIONAL: *intnum= ((AVRational*)dst)->num;
*den = ((AVRational*)dst)->den;
return 0;
}
error:
*den=*intnum=0;
return -1;
}
int opt_default(const char *opt, const char *arg){
int type;
int ret= 0;
const AVOption *o= NULL;
int opt_types[]={AV_OPT_FLAG_VIDEO_PARAM, AV_OPT_FLAG_AUDIO_PARAM, 0, AV_OPT_FLAG_SUBTITLE_PARAM, 0};
AVCodec *p = NULL;
AVOutputFormat *oformat = NULL;
AVInputFormat *iformat = NULL;
while ((p = av_codec_next(p))) {
AVClass *c = p->priv_class;
if (c && av_find_opt(&c, opt, NULL, 0, 0))
break;
}
if (p)
goto out;
while ((oformat = av_oformat_next(oformat))) {
const AVClass *c = oformat->priv_class;
if (c && av_find_opt(&c, opt, NULL, 0, 0))
break;
}
if (oformat)
goto out;
while ((iformat = av_iformat_next(iformat))) {
const AVClass *c = iformat->priv_class;
if (c && av_find_opt(&c, opt, NULL, 0, 0))
break;
}
if (iformat)
goto out;
for(type=0; *avcodec_opts && type<AVMEDIA_TYPE_NB && ret>= 0; type++){
const AVOption *o2 = av_find_opt(avcodec_opts[0], opt, NULL, opt_types[type], opt_types[type]);
if(o2)
ret = av_set_string3(avcodec_opts[type], opt, arg, 1, &o);
}
if(!o && avformat_opts)
ret = av_set_string3(avformat_opts, opt, arg, 1, &o);
if(!o && sws_opts)
ret = av_set_string3(sws_opts, opt, arg, 1, &o);
if(!o){
if (opt[0] == 'a' && avcodec_opts[AVMEDIA_TYPE_AUDIO])
ret = av_set_string3(avcodec_opts[AVMEDIA_TYPE_AUDIO], opt+1, arg, 1, &o);
else if(opt[0] == 'v' && avcodec_opts[AVMEDIA_TYPE_VIDEO])
ret = av_set_string3(avcodec_opts[AVMEDIA_TYPE_VIDEO], opt+1, arg, 1, &o);
else if(opt[0] == 's' && avcodec_opts[AVMEDIA_TYPE_SUBTITLE])
ret = av_set_string3(avcodec_opts[AVMEDIA_TYPE_SUBTITLE], opt+1, arg, 1, &o);
if (ret >= 0)
opt += 1;
}
if (o && ret < 0) {
fprintf(stderr, "Invalid value '%s' for option '%s'\n", arg, opt);
exit(1);
}
if (!o) {
fprintf(stderr, "Unrecognized option '%s'\n", opt);
exit(1);
}
out:
// av_log(NULL, AV_LOG_ERROR, "%s:%s: %f 0x%0X\n", opt, arg, av_get_double(avcodec_opts, opt, NULL), (int)av_get_int(avcodec_opts, opt, NULL));
opt_values= av_realloc(opt_values, sizeof(void*)*(opt_name_count+1));
opt_values[opt_name_count] = av_strdup(arg);
opt_names= av_realloc(opt_names, sizeof(void*)*(opt_name_count+1));
opt_names[opt_name_count++] = av_strdup(opt);
if ((*avcodec_opts && avcodec_opts[0]->debug) || (avformat_opts && avformat_opts->debug))
av_log_set_level(AV_LOG_DEBUG);
return 0;
}
const AVOption *av_set_string2(void *obj, const char *name, const char *val, int alloc){
const AVOption *o= av_find_opt(obj, name, NULL, 0, 0);
if(o && o->offset==0 && o->type == FF_OPT_TYPE_CONST && o->unit){
return set_all_opt(obj, o->unit, o->default_val);
}
if(!o || !val || o->offset<=0)
return NULL;
if(o->type == FF_OPT_TYPE_BINARY){
uint8_t **dst = (uint8_t **)(((uint8_t*)obj) + o->offset);
int *lendst = (int *)(dst + 1);
uint8_t *bin, *ptr;
int len = strlen(val);
av_freep(dst);
*lendst = 0;
if (len & 1) return NULL;
len /= 2;
ptr = bin = av_malloc(len);
while (*val) {
int a = hexchar2int(*val++);
int b = hexchar2int(*val++);
if (a < 0 || b < 0) {
av_free(bin);
return NULL;
}
*ptr++ = (a << 4) | b;
}
*dst = bin;
*lendst = len;
return o;
}
if(o->type != FF_OPT_TYPE_STRING){
int notfirst=0;
for(;;){
int i;
char buf[256];
int cmd=0;
double d;
const char *error = NULL;
if(*val == '+' || *val == '-')
cmd= *(val++);
for(i=0; i<sizeof(buf)-1 && val[i] && val[i]!='+' && val[i]!='-'; i++)
buf[i]= val[i];
buf[i]=0;
d = ff_eval2(buf, (double *)const_values, (const char **)const_names, NULL, NULL, NULL, NULL, NULL, &error);
if(isnan(d)) {
const AVOption *o_named= av_find_opt(obj, buf, o->unit, 0, 0);
if(o_named && o_named->type == FF_OPT_TYPE_CONST)
d= o_named->default_val;
else if(!strcmp(buf, "default")) d= o->default_val;
else if(!strcmp(buf, "max" )) d= o->max;
else if(!strcmp(buf, "min" )) d= o->min;
else if(!strcmp(buf, "none" )) d= 0;
else if(!strcmp(buf, "all" )) d= ~0;
else {
if (error)
av_log(NULL, AV_LOG_ERROR, "Unable to parse option value \"%s\": %s\n", val, error);
return NULL;
}
}
if(o->type == FF_OPT_TYPE_FLAGS){
if (cmd=='+') d= av_get_int(obj, name, NULL) | (int64_t)d;
else if(cmd=='-') d= av_get_int(obj, name, NULL) &~(int64_t)d;
}else{
if (cmd=='+') d= notfirst*av_get_double(obj, name, NULL) + d;
else if(cmd=='-') d= notfirst*av_get_double(obj, name, NULL) - d;
}
if (!av_set_number(obj, name, d, 1, 1))
return NULL;
val+= i;
if(!*val)
return o;
notfirst=1;
}
return NULL;
}
if(alloc){
av_free(*(void**)(((uint8_t*)obj) + o->offset));
val= av_strdup(val);
}
memcpy(((uint8_t*)obj) + o->offset, &val, sizeof(val));
return o;
}