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#include <pthread.h>
#include <assert.h>
#include <libavutil/hwcontext.h>
#include "config.h"
#include "hwdec.h"
struct mp_hwdec_devices {
pthread_mutex_t lock;
struct mp_hwdec_ctx **hwctxs;
int num_hwctxs;
void (*load_api)(void *ctx);
void *load_api_ctx;
};
struct mp_hwdec_devices *hwdec_devices_create(void)
{
struct mp_hwdec_devices *devs = talloc_zero(NULL, struct mp_hwdec_devices);
pthread_mutex_init(&devs->lock, NULL);
return devs;
}
void hwdec_devices_destroy(struct mp_hwdec_devices *devs)
{
if (!devs)
return;
assert(!devs->num_hwctxs); // must have been hwdec_devices_remove()ed
assert(!devs->load_api); // must have been unset
pthread_mutex_destroy(&devs->lock);
talloc_free(devs);
}
struct AVBufferRef *hwdec_devices_get_lavc(struct mp_hwdec_devices *devs,
int av_hwdevice_type)
{
AVBufferRef *res = NULL;
pthread_mutex_lock(&devs->lock);
for (int n = 0; n < devs->num_hwctxs; n++) {
struct mp_hwdec_ctx *dev = devs->hwctxs[n];
if (dev->av_device_ref) {
AVHWDeviceContext *hwctx = (void *)dev->av_device_ref->data;
if (hwctx->type == av_hwdevice_type) {
if (dev->av_device_ref)
res = av_buffer_ref(dev->av_device_ref);
break;
}
}
}
pthread_mutex_unlock(&devs->lock);
return res;
}
struct mp_hwdec_ctx *hwdec_devices_get_first(struct mp_hwdec_devices *devs)
{
pthread_mutex_lock(&devs->lock);
struct mp_hwdec_ctx *res = devs->num_hwctxs ? devs->hwctxs[0] : NULL;
pthread_mutex_unlock(&devs->lock);
return res;
}
void hwdec_devices_add(struct mp_hwdec_devices *devs, struct mp_hwdec_ctx *ctx)
{
pthread_mutex_lock(&devs->lock);
MP_TARRAY_APPEND(devs, devs->hwctxs, devs->num_hwctxs, ctx);
pthread_mutex_unlock(&devs->lock);
}
void hwdec_devices_remove(struct mp_hwdec_devices *devs, struct mp_hwdec_ctx *ctx)
{
pthread_mutex_lock(&devs->lock);
for (int n = 0; n < devs->num_hwctxs; n++) {
if (devs->hwctxs[n] == ctx) {
MP_TARRAY_REMOVE_AT(devs->hwctxs, devs->num_hwctxs, n);
break;
}
}
pthread_mutex_unlock(&devs->lock);
}
void hwdec_devices_set_loader(struct mp_hwdec_devices *devs,
void (*load_api)(void *ctx), void *load_api_ctx)
{
devs->load_api = load_api;
devs->load_api_ctx = load_api_ctx;
}
void hwdec_devices_request_all(struct mp_hwdec_devices *devs)
{
if (devs->load_api && !hwdec_devices_get_first(devs))
devs->load_api(devs->load_api_ctx);
}
char *hwdec_devices_get_names(struct mp_hwdec_devices *devs)
{
char *res = NULL;
for (int n = 0; n < devs->num_hwctxs; n++) {
if (res)
ta_xstrdup_append(&res, ",");
ta_xstrdup_append(&res, devs->hwctxs[n]->driver_name);
}
return res;
}
static const struct hwcontext_fns *const hwcontext_fns[] = {
#if HAVE_D3D_HWACCEL
&hwcontext_fns_d3d11,
#endif
#if HAVE_D3D9_HWACCEL
&hwcontext_fns_dxva2,
#endif
#if HAVE_VAAPI
&hwcontext_fns_vaapi,
#endif
#if HAVE_VDPAU
&hwcontext_fns_vdpau,
#endif
NULL,
};
const struct hwcontext_fns *hwdec_get_hwcontext_fns(int av_hwdevice_type)
{
for (int n = 0; hwcontext_fns[n]; n++) {
if (hwcontext_fns[n]->av_hwdevice_type == av_hwdevice_type)
return hwcontext_fns[n];
}
return NULL;
}
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