const char **opt_names=NULL;
int opt_name_count=0;
AVCodecContext *avctx_opts;
+AVFormatContext *avformat_opts;
static AVBitStreamFilterContext *video_bitstream_filters=NULL;
static AVBitStreamFilterContext *audio_bitstream_filters=NULL;
!strcmp( filename, "/dev/stdin" );
/* get default parameters from command line */
+ ic = av_alloc_format_context();
+
memset(ap, 0, sizeof(*ap));
+ ap->prealloced_context = 1;
ap->sample_rate = audio_sample_rate;
ap->channels = audio_channels;
ap->time_base.den = frame_rate;
if(pgmyuv_compatibility_hack)
ap->video_codec_id= CODEC_ID_PGMYUV;
+ for(i=0; i<opt_name_count; i++){
+ AVOption *opt;
+ double d= av_get_double(avformat_opts, opt_names[i], &opt);
+ if(d==d && (opt->flags&AV_OPT_FLAG_DECODING_PARAM))
+ av_set_double(ic, opt_names[i], d);
+ }
/* open the input file with generic libav function */
err = av_open_input_file(&ic, filename, file_iformat, 0, ap);
if (err < 0) {
static int opt_default(const char *opt, const char *arg){
AVOption *o= av_set_string(avctx_opts, opt, arg);
+ if(!o)
+ o = av_set_string(avformat_opts, opt, arg);
if(!o)
return -1;
OPT_EXPERT | OPT_AUDIO | OPT_VIDEO | OPT_GRAB,
OPT_EXPERT);
av_opt_show(avctx_opts, NULL);
+ av_opt_show(avformat_opts, NULL);
exit(1);
}
av_register_all();
avctx_opts= avcodec_alloc_context();
+ avformat_opts = av_alloc_format_context();
if (argc <= 1)
show_help();
*/
#include "avformat.h"
#include "allformats.h"
+#include "opt.h"
#undef NDEBUG
#include <assert.h>
else return "NULL";
}
-static const AVClass av_format_context_class = { "AVFormatContext", format_to_name };
+#define OFFSET(x) (int)&((AVFormatContext*)0)->x
+#define DEFAULT 0 //should be NAN but it doesnt work as its not a constant in glibc as required by ANSI/ISO C
+//these names are too long to be readable
+#define E AV_OPT_FLAG_ENCODING_PARAM
+#define D AV_OPT_FLAG_DECODING_PARAM
+
+static const AVOption options[]={
+{NULL},
+};
+
+static const AVClass av_format_context_class = { "AVFormatContext", format_to_name, options };
+
+void avformat_get_context_defaults(AVFormatContext *s){
+ memset(s, 0, sizeof(AVFormatContext));
+}
AVFormatContext *av_alloc_format_context(void)
{
AVFormatContext *ic;
ic = av_mallocz(sizeof(AVFormatContext));
if (!ic) return ic;
+ avformat_get_context_defaults(ic);
ic->av_class = &av_format_context_class;
return ic;
}
memset(ap, 0, sizeof(default_ap));
}
- ic = av_alloc_format_context();
+ if(!ap->prealloced_context)
+ ic = av_alloc_format_context();
+ else
+ ic = *ic_ptr;
if (!ic) {
err = AVERROR_NOMEM;
goto fail;