static av_cold int a52_decode_init(AVCodecContext *avctx)
{
AC3DecodeState *s = avctx->priv_data;
#ifdef CONFIG_LIBA52BIN
s->handle = dlopen(liba52name, RTLD_LAZY);
if (!s->handle)
{
av_log( avctx, AV_LOG_ERROR, "A52 library %s could not be opened! \n%s\n", liba52name, dlerror());
return -1;
}
s->a52_init = (a52_state_t* (*)(uint32_t)) dlsymm(s->handle, "a52_init");
s->a52_samples = (sample_t* (*)(a52_state_t*)) dlsymm(s->handle, "a52_samples");
s->a52_syncinfo = (int (*)(uint8_t*, int*, int*, int*)) dlsymm(s->handle, "a52_syncinfo");
s->a52_frame = (int (*)(a52_state_t*, uint8_t*, int*, sample_t*, sample_t)) dlsymm(s->handle, "a52_frame");
s->a52_block = (int (*)(a52_state_t*)) dlsymm(s->handle, "a52_block");
s->a52_free = (void (*)(a52_state_t*)) dlsymm(s->handle, "a52_free");
if (!s->a52_init || !s->a52_samples || !s->a52_syncinfo
|| !s->a52_frame || !s->a52_block || !s->a52_free)
{
dlclose(s->handle);
return -1;
}
#else
s->handle = 0;
s->a52_init = a52_init;
s->a52_samples = a52_samples;
s->a52_syncinfo = a52_syncinfo;
s->a52_frame = a52_frame;
s->a52_block = a52_block;
s->a52_free = a52_free;
#endif
s->state = s->a52_init(0); /* later use CPU flags */
s->samples = s->a52_samples(s->state);
/* allow downmixing to stereo or mono */
if (avctx->channels > 0 && avctx->request_channels > 0 &&
avctx->request_channels < avctx->channels &&
avctx->request_channels <= 2) {
avctx->channels = avctx->request_channels;
}
return 0;
}
static int a52_decode_init(AVCodecContext *avctx)
{
AC3DecodeState *s = avctx->priv_data;
#ifdef CONFIG_A52BIN
s->handle = dlopen(liba52name, RTLD_LAZY);
if (!s->handle)
{
fprintf(stderr, "A52 library %s could not be opened! \n%s\n", liba52name, dlerror());
return -1;
}
s->a52_init = (a52_state_t* (*)(uint32_t)) dlsymm(s->handle, "a52_init");
s->a52_samples = (sample_t* (*)(a52_state_t*)) dlsymm(s->handle, "a52_samples");
s->a52_syncinfo = (int (*)(uint8_t*, int*, int*, int*)) dlsymm(s->handle, "a52_syncinfo");
s->a52_frame = (int (*)(a52_state_t*, uint8_t*, int*, sample_t*, sample_t)) dlsymm(s->handle, "a52_frame");
s->a52_block = (int (*)(a52_state_t*)) dlsymm(s->handle, "a52_block");
s->a52_free = (void (*)(a52_state_t*)) dlsymm(s->handle, "a52_free");
if (!s->a52_init || !s->a52_samples || !s->a52_syncinfo
|| !s->a52_frame || !s->a52_block || !s->a52_free)
{
dlclose(s->handle);
return -1;
}
#else
/* static linked version */
s->handle = 0;
s->a52_init = a52_init;
s->a52_samples = a52_samples;
s->a52_syncinfo = a52_syncinfo;
s->a52_frame = a52_frame;
s->a52_block = a52_block;
s->a52_free = a52_free;
#endif
s->state = s->a52_init(0); /* later use CPU flags */
s->samples = s->a52_samples(s->state);
s->inbuf_ptr = s->inbuf;
s->frame_size = 0;
return 0;
}