mirror of https://github.com/mpv-player/mpv
103 lines
3.7 KiB
C
103 lines
3.7 KiB
C
/*
|
|
* This file is part of mpv video player.
|
|
* Copyright © 2014 Alexander Preisinger <alexander.preisinger@gmail.com>
|
|
*
|
|
* mpv is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Lesser General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2.1 of the License, or (at your option) any later version.
|
|
*
|
|
* mpv is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public
|
|
* License along with mpv. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#ifndef MPLAYER_WAYLAND_BUFFER_H
|
|
#define MPLAYER_WAYLAND_BUFFER_H
|
|
|
|
#include <libavutil/common.h>
|
|
#include "video/sws_utils.h"
|
|
#include "video/img_format.h"
|
|
#include "video/out/wayland_common.h"
|
|
|
|
#define SHM_BUFFER_STRIDE(width, bytes) \
|
|
FFALIGN((width) * (bytes), SWS_MIN_BYTE_ALIGN)
|
|
|
|
typedef struct format {
|
|
enum wl_shm_format wl_format;
|
|
enum mp_imgfmt mp_format;
|
|
} format_t;
|
|
|
|
int8_t format_get_bytes(const format_t *fmt);
|
|
|
|
typedef enum shm_buffer_flags {
|
|
SHM_BUFFER_BUSY = 1 << 0, // in use by the compositor
|
|
SHM_BUFFER_DIRTY = 1 << 1, // buffer contains new content
|
|
SHM_BUFFER_ONESHOT = 1 << 2, // free after release
|
|
SHM_BUFFER_RESIZE_LATER = 1 << 3, // free after release
|
|
} shm_buffer_flags_t;
|
|
|
|
#define SHM_BUFFER_IS_BUSY(b) (!!((b)->flags & SHM_BUFFER_BUSY))
|
|
#define SHM_BUFFER_IS_DIRTY(b) (!!((b)->flags & SHM_BUFFER_DIRTY))
|
|
#define SHM_BUFFER_IS_ONESHOT(b) (!!((b)->flags & SHM_BUFFER_ONESHOT))
|
|
#define SHM_BUFFER_PENDING_RESIZE(b) (!!((b)->flags & SHM_BUFFER_RESIZE_LATER))
|
|
|
|
#define SHM_BUFFER_SET_BUSY(b) (b)->flags |= SHM_BUFFER_BUSY
|
|
#define SHM_BUFFER_SET_DIRTY(b) (b)->flags |= SHM_BUFFER_DIRTY
|
|
#define SHM_BUFFER_SET_ONESHOT(b) (b)->flags |= SHM_BUFFER_ONESHOT
|
|
#define SHM_BUFFER_SET_PNDNG_RSZ(b) (b)->flags |= SHM_BUFFER_RESIZE_LATER
|
|
|
|
#define SHM_BUFFER_CLEAR_BUSY(b) (b)->flags &= ~SHM_BUFFER_BUSY
|
|
#define SHM_BUFFER_CLEAR_DIRTY(b) (b)->flags &= ~SHM_BUFFER_DIRTY
|
|
#define SHM_BUFFER_CLEAR_ONESHOT(b) (b)->flags &= ~SHM_BUFFER_ONESHOT
|
|
#define SHM_BUFFER_CLEAR_PNDNG_RSZ(b) (b)->flags &= ~SHM_BUFFER_RESIZE_LATER
|
|
|
|
typedef struct buffer {
|
|
struct wl_buffer *buffer;
|
|
|
|
int flags;
|
|
|
|
uint32_t height;
|
|
uint32_t stride;
|
|
uint32_t bytes; // bytes per pixel
|
|
// width = stride / bytes per pixel
|
|
// size = stride * height
|
|
|
|
struct wl_shm_pool *shm_pool; // for growing buffers;
|
|
|
|
int fd;
|
|
void *data;
|
|
uint32_t pool_size; // size of pool and data XXX
|
|
// pool_size can be far bigger than the buffer size
|
|
|
|
format_t format;
|
|
|
|
uint32_t pending_height;
|
|
uint32_t pending_width;
|
|
} shm_buffer_t;
|
|
|
|
shm_buffer_t* shm_buffer_create(uint32_t width,
|
|
uint32_t height,
|
|
format_t fmt,
|
|
struct wl_shm *shm,
|
|
const struct wl_buffer_listener *listener);
|
|
|
|
// shm pool is only able to grow and won't shrink
|
|
// returns 0 on success or buffer flags indicating the buffer status which
|
|
// prevent it from resizing
|
|
int shm_buffer_resize(shm_buffer_t *buffer, uint32_t width, uint32_t height);
|
|
|
|
// if shm_buffer_resize returns SHM_BUFFER_BUSY this function can be called
|
|
// after the buffer is released to resize it afterwards
|
|
// returns 0 if no pending resize flag was set and -1 on errors
|
|
int shm_buffer_pending_resize(shm_buffer_t *buffer);
|
|
|
|
// buffer is freed, don't use the buffer after calling this function on it
|
|
void shm_buffer_destroy(shm_buffer_t *buffer);
|
|
|
|
#endif /* MPLAYER_WAYLAND_BUFFER_H */
|