mirror of
https://github.com/mpv-player/mpv
synced 2024-12-25 16:33:02 +00:00
89 lines
2.4 KiB
C
89 lines
2.4 KiB
C
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#include <pthread.h>
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#include <assert.h>
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#include "hwdec.h"
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struct mp_hwdec_devices {
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pthread_mutex_t lock;
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struct mp_hwdec_ctx *hwctx;
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void (*load_api)(void *ctx, enum hwdec_type type);
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void *load_api_ctx;
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};
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struct mp_hwdec_devices *hwdec_devices_create(void)
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{
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struct mp_hwdec_devices *devs = talloc_zero(NULL, struct mp_hwdec_devices);
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pthread_mutex_init(&devs->lock, NULL);
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return devs;
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}
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void hwdec_devices_destroy(struct mp_hwdec_devices *devs)
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{
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if (!devs)
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return;
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assert(!devs->hwctx); // must have been hwdec_devices_remove()ed
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assert(!devs->load_api); // must have been unset
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pthread_mutex_destroy(&devs->lock);
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talloc_free(devs);
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}
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struct mp_hwdec_ctx *hwdec_devices_get(struct mp_hwdec_devices *devs,
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enum hwdec_type type)
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{
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struct mp_hwdec_ctx *res = NULL;
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pthread_mutex_lock(&devs->lock);
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if (devs->hwctx && devs->hwctx->type == type)
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res = devs->hwctx;
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pthread_mutex_unlock(&devs->lock);
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return res;
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}
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struct mp_hwdec_ctx *hwdec_devices_get_first(struct mp_hwdec_devices *devs)
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{
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pthread_mutex_lock(&devs->lock);
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struct mp_hwdec_ctx *res = devs->hwctx;
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pthread_mutex_unlock(&devs->lock);
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return res;
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}
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void hwdec_devices_add(struct mp_hwdec_devices *devs, struct mp_hwdec_ctx *ctx)
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{
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pthread_mutex_lock(&devs->lock);
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// We support only 1 device; ignore the rest.
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if (!devs->hwctx)
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devs->hwctx = ctx;
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pthread_mutex_unlock(&devs->lock);
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}
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void hwdec_devices_remove(struct mp_hwdec_devices *devs, struct mp_hwdec_ctx *ctx)
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{
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pthread_mutex_lock(&devs->lock);
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if (devs->hwctx == ctx)
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devs->hwctx = NULL;
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pthread_mutex_unlock(&devs->lock);
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}
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void hwdec_devices_set_loader(struct mp_hwdec_devices *devs,
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void (*load_api)(void *ctx, enum hwdec_type type), void *load_api_ctx)
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{
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devs->load_api = load_api;
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devs->load_api_ctx = load_api_ctx;
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}
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void hwdec_devices_request(struct mp_hwdec_devices *devs, enum hwdec_type type)
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{
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if (devs->load_api && !hwdec_devices_get_first(devs))
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devs->load_api(devs->load_api_ctx, type);
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}
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void *hwdec_devices_load(struct mp_hwdec_devices *devs, enum hwdec_type type)
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{
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if (!devs)
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return NULL;
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hwdec_devices_request(devs, type);
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struct mp_hwdec_ctx *hwctx = hwdec_devices_get(devs, type);
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return hwctx ? hwctx->ctx : NULL;
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}
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