1
0
mirror of https://github.com/mpv-player/mpv synced 2024-12-23 07:12:39 +00:00
mpv/video/hwdec.c
Philip Langdale 5629ed81ee filters: support loading new hwdec_interops from filters
If we want to be able to handle conversion between hw formats in filter
chains, then we need to be able to load hwdec_interops from filters, as
the VO is only ever going to initialise one interop, based on its
configuration. That means that in almost all situations, only one of
the required interops will be loaded at the time the filter is
initialised.

The existing code has some assumptions that new hwdec_interops will not
be loaded after the vo has picked one to use. This change fixes two
instances:

* Refusing to load a new hwdec_interop if there is at least one
  loaded already.
* Not recalculating the set of formats known to the autoconvert
  filter when a new output format shows up. This leads to autoconvert
  not knowing that a new format is supported when the hwdec interop is
  lazily loaded.
2022-09-21 09:39:34 -07:00

142 lines
3.5 KiB
C

#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,
struct hwdec_imgfmt_request *params);
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 mp_hwdec_ctx *hwdec_devices_get_by_imgfmt(struct mp_hwdec_devices *devs,
int hw_imgfmt)
{
struct mp_hwdec_ctx *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->hw_imgfmt == hw_imgfmt) {
res = dev;
break;
}
}
pthread_mutex_unlock(&devs->lock);
return res;
}
struct mp_hwdec_ctx *hwdec_devices_get_first(struct mp_hwdec_devices *devs)
{
return hwdec_devices_get_n(devs, 0);
}
struct mp_hwdec_ctx *hwdec_devices_get_n(struct mp_hwdec_devices *devs, int n)
{
pthread_mutex_lock(&devs->lock);
struct mp_hwdec_ctx *res = n < devs->num_hwctxs ? devs->hwctxs[n] : 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, struct hwdec_imgfmt_request *params),
void *load_api_ctx)
{
devs->load_api = load_api;
devs->load_api_ctx = load_api_ctx;
}
void hwdec_devices_request_for_img_fmt(struct mp_hwdec_devices *devs,
struct hwdec_imgfmt_request *params)
{
if (devs->load_api)
devs->load_api(devs->load_api_ctx, params);
}
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_CUDA_HWACCEL
&hwcontext_fns_cuda,
#endif
#if HAVE_D3D_HWACCEL
&hwcontext_fns_d3d11,
#endif
#if HAVE_D3D9_HWACCEL
&hwcontext_fns_dxva2,
#endif
#if HAVE_DRM
&hwcontext_fns_drmprime,
#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;
}