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#include <string.h>
#include <stdio.h>
#include <gmerlin/avdec.h>
#include <gavl/gavl.h>
#include <m_pd.h>
#define DEBUG(x) x
//#define DEBUG(x)
static t_class *sfduration_class;
typedef struct _sfduration
{
t_object x_obj;
t_symbol* cwd;
t_symbol* filename;
bgav_t* decoder;
} t_sfduration;
static void sfduration_bang(t_sfduration *x)
{
DEBUG(post("sfduration_bang"));
const gavl_audio_format_t* open_audio_format;
gavl_time_t gavl_time;
if(x->filename == &s_) {
pd_error(x,"no file set");
return;
}
if(!bgav_open(x->decoder, x->filename->s_name)) {
pd_error(x, "Could not open file %s", x->filename->s_name);
}
// only concerned with the first audio stream
open_audio_format = bgav_get_audio_format(x->decoder, 0);
// we can get audio formats that are unkown
if (open_audio_format->sample_format == GAVL_SAMPLE_NONE) {
pd_error(x, "sorry, this file has unsupported audio.");
}
gavl_time = bgav_get_duration(x->decoder, 0);
t_float time_per_sample = (t_float)(gavl_time_to_samples(
open_audio_format->samplerate,
gavl_time));
t_float samplerate = (t_float)open_audio_format->samplerate;
outlet_float(x->x_obj.ob_outlet, time_per_sample / samplerate * 1000.0);
}
static void sfduration_symbol(t_sfduration *x, t_symbol* filename)
{
DEBUG(post("sfduration_symbol"));
if(sys_isabsolutepath(filename->s_name)) {
x->filename = filename;
} else {
int buflen;
char buf[FILENAME_MAX];
strncpy(buf, x->cwd->s_name, FILENAME_MAX);
strcat(buf, "/");
strncat(buf, filename->s_name, FILENAME_MAX - buflen - 2);
x->filename = gensym(buf);
}
sfduration_bang(x);
}
static void *sfduration_new(t_symbol *s, int argc, t_atom *argv)
{
t_sfduration *x = (t_sfduration *)pd_new(sfduration_class);
// TODO convert args into a filename, so spaces are valid
x->filename = &s_;
x->cwd = canvas_getdir(canvas_getcurrent());
outlet_new(&x->x_obj, &s_float);
x->decoder = bgav_create();
return(x);
}
static void sfduration_free(t_sfduration *x)
{
bgav_close(x->decoder);
}
void sfduration_setup(void)
{
sfduration_class = class_new(gensym("sfduration"),
(t_newmethod)sfduration_new,
(t_method)sfduration_free,
sizeof(t_sfduration),
0, A_GIMME, 0);
class_addbang(sfduration_class, (t_method)sfduration_bang);
class_addsymbol(sfduration_class, (t_method)sfduration_symbol);
}
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