1
0
mirror of https://github.com/mpv-player/mpv synced 2024-12-22 23:02:37 +00:00
mpv/video/hwdec.h
wm4 2a04906063 hwdec: fix 2 comments
The first is outdated, the second was always wrong.
2017-05-24 14:32:23 +02:00

117 lines
4.2 KiB
C

#ifndef MP_HWDEC_H_
#define MP_HWDEC_H_
#include "options/m_option.h"
struct mp_image_pool;
// keep in sync with --hwdec option (see mp_hwdec_names)
enum hwdec_type {
HWDEC_NONE = 0,
HWDEC_AUTO,
HWDEC_AUTO_COPY,
HWDEC_VDPAU,
HWDEC_VDPAU_COPY,
HWDEC_VIDEOTOOLBOX,
HWDEC_VIDEOTOOLBOX_COPY,
HWDEC_VAAPI,
HWDEC_VAAPI_COPY,
HWDEC_DXVA2,
HWDEC_DXVA2_COPY,
HWDEC_D3D11VA,
HWDEC_D3D11VA_COPY,
HWDEC_RPI,
HWDEC_RPI_COPY,
HWDEC_MEDIACODEC,
HWDEC_CUDA,
HWDEC_CUDA_COPY,
HWDEC_CRYSTALHD,
};
#define HWDEC_IS_AUTO(x) ((x) == HWDEC_AUTO || (x) == HWDEC_AUTO_COPY)
// hwdec_type names (options.c)
extern const struct m_opt_choice_alternatives mp_hwdec_names[];
struct mp_hwdec_ctx {
enum hwdec_type type; // (never HWDEC_NONE or HWDEC_IS_AUTO)
const char *driver_name; // NULL if unknown/not loaded
// This is never NULL. Its meaning depends on the .type field:
// HWDEC_VDPAU: struct mp_vdpau_ctx*
// HWDEC_VIDEOTOOLBOX: non-NULL dummy pointer
// HWDEC_VAAPI: struct mp_vaapi_ctx*
// HWDEC_D3D11VA: ID3D11Device*
// HWDEC_DXVA2: IDirect3DDevice9*
// HWDEC_CUDA: CUcontext*
void *ctx;
// libavutil-wrapped context, if available.
struct AVBufferRef *av_device_ref; // AVHWDeviceContext*
// List of IMGFMT_s, terminated with 0. NULL if N/A.
int *supported_formats;
// Hint to generic code: it's using a wrapper API
bool emulated;
// Optional. Legacy. (New code should use AVHWFramesContext and
// mp_image_hw_download().)
// Allocates a software image from the pool, downloads the hw image from
// mpi, and returns it.
// pool can be NULL (then just use straight allocation).
// Return NULL on error or if mpi has the wrong format.
struct mp_image *(*download_image)(struct mp_hwdec_ctx *ctx,
struct mp_image *mpi,
struct mp_image_pool *swpool);
// Optional. Crap for vdpau. Makes sure preemption recovery is run if needed.
void (*restore_device)(struct mp_hwdec_ctx *ctx);
// Optional. Do not set for VO-bound devices.
void (*destroy)(struct mp_hwdec_ctx *ctx);
};
// Used to communicate hardware decoder device handles from VO to video decoder.
struct mp_hwdec_devices;
struct mp_hwdec_devices *hwdec_devices_create(void);
void hwdec_devices_destroy(struct mp_hwdec_devices *devs);
// Return the device context for the given API type. Returns NULL if none
// available. Logically, the returned pointer remains valid until VO
// uninitialization is started (all users of it must be uninitialized before).
// hwdec_devices_request() may be used before this to lazily load devices.
struct mp_hwdec_ctx *hwdec_devices_get(struct mp_hwdec_devices *devs,
enum hwdec_type type);
// For code which still strictly assumes there is 1 (or none) device.
struct mp_hwdec_ctx *hwdec_devices_get_first(struct mp_hwdec_devices *devs);
// Add this to the list of internal devices. Adding the same pointer twice must
// be avoided.
void hwdec_devices_add(struct mp_hwdec_devices *devs, struct mp_hwdec_ctx *ctx);
// Remove this from the list of internal devices. Idempotent/ignores entries
// not added yet.
void hwdec_devices_remove(struct mp_hwdec_devices *devs, struct mp_hwdec_ctx *ctx);
// Can be used to enable lazy loading of an API with hwdec_devices_request().
// If used at all, this must be set/unset during initialization/uninitialization,
// as concurrent use with hwdec_devices_request() is a race condition.
void hwdec_devices_set_loader(struct mp_hwdec_devices *devs,
void (*load_api)(void *ctx, enum hwdec_type type), void *load_api_ctx);
// Cause VO to lazily load the requested device, and will block until this is
// done (even if not available).
void hwdec_devices_request(struct mp_hwdec_devices *devs, enum hwdec_type type);
// Convenience function:
// - return NULL if devs==NULL
// - call hwdec_devices_request(devs, type)
// - call hwdec_devices_get(devs, type)
// - then return the mp_hwdec_ctx.ctx field
void *hwdec_devices_load(struct mp_hwdec_devices *devs, enum hwdec_type type);
#endif