mirror of
https://github.com/mpv-player/mpv
synced 2024-12-23 07:12:39 +00:00
103 lines
3.7 KiB
C
103 lines
3.7 KiB
C
/*
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* This file is part of mpv video player.
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* Copyright © 2014 Alexander Preisinger <alexander.preisinger@gmail.com>
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*
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* mpv is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* mpv is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with mpv. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef MPLAYER_WAYLAND_BUFFER_H
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#define MPLAYER_WAYLAND_BUFFER_H
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#include <libavutil/common.h>
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#include "video/sws_utils.h"
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#include "video/img_format.h"
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#include "video/out/wayland_common.h"
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#define SHM_BUFFER_STRIDE(width, bytes) \
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FFALIGN((width) * (bytes), SWS_MIN_BYTE_ALIGN)
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typedef struct format {
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enum wl_shm_format wl_format;
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enum mp_imgfmt mp_format;
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} format_t;
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int8_t format_get_bytes(const format_t *fmt);
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typedef enum shm_buffer_flags {
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SHM_BUFFER_BUSY = 1 << 0, // in use by the compositor
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SHM_BUFFER_DIRTY = 1 << 1, // buffer contains new content
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SHM_BUFFER_ONESHOT = 1 << 2, // free after release
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SHM_BUFFER_RESIZE_LATER = 1 << 3, // free after release
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} shm_buffer_flags_t;
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#define SHM_BUFFER_IS_BUSY(b) (!!((b)->flags & SHM_BUFFER_BUSY))
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#define SHM_BUFFER_IS_DIRTY(b) (!!((b)->flags & SHM_BUFFER_DIRTY))
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#define SHM_BUFFER_IS_ONESHOT(b) (!!((b)->flags & SHM_BUFFER_ONESHOT))
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#define SHM_BUFFER_PENDING_RESIZE(b) (!!((b)->flags & SHM_BUFFER_RESIZE_LATER))
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#define SHM_BUFFER_SET_BUSY(b) (b)->flags |= SHM_BUFFER_BUSY
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#define SHM_BUFFER_SET_DIRTY(b) (b)->flags |= SHM_BUFFER_DIRTY
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#define SHM_BUFFER_SET_ONESHOT(b) (b)->flags |= SHM_BUFFER_ONESHOT
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#define SHM_BUFFER_SET_PNDNG_RSZ(b) (b)->flags |= SHM_BUFFER_RESIZE_LATER
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#define SHM_BUFFER_CLEAR_BUSY(b) (b)->flags &= ~SHM_BUFFER_BUSY
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#define SHM_BUFFER_CLEAR_DIRTY(b) (b)->flags &= ~SHM_BUFFER_DIRTY
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#define SHM_BUFFER_CLEAR_ONESHOT(b) (b)->flags &= ~SHM_BUFFER_ONESHOT
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#define SHM_BUFFER_CLEAR_PNDNG_RSZ(b) (b)->flags &= ~SHM_BUFFER_RESIZE_LATER
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typedef struct buffer {
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struct wl_buffer *buffer;
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int flags;
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uint32_t height;
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uint32_t stride;
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uint32_t bytes; // bytes per pixel
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// width = stride / bytes per pixel
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// size = stride * height
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struct wl_shm_pool *shm_pool; // for growing buffers;
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int fd;
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void *data;
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uint32_t pool_size; // size of pool and data XXX
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// pool_size can be far bigger than the buffer size
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format_t format;
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uint32_t pending_height;
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uint32_t pending_width;
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} shm_buffer_t;
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shm_buffer_t* shm_buffer_create(uint32_t width,
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uint32_t height,
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format_t fmt,
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struct wl_shm *shm,
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const struct wl_buffer_listener *listener);
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// shm pool is only able to grow and won't shrink
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// returns 0 on success or buffer flags indicating the buffer status which
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// prevent it from resizing
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int shm_buffer_resize(shm_buffer_t *buffer, uint32_t width, uint32_t height);
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// if shm_buffer_resize returns SHM_BUFFER_BUSY this function can be called
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// after the buffer is released to resize it afterwards
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// returns 0 if no pending resize flag was set and -1 on errors
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int shm_buffer_pending_resize(shm_buffer_t *buffer);
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// buffer is freed, don't use the buffer after calling this function on it
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void shm_buffer_destroy(shm_buffer_t *buffer);
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#endif /* MPLAYER_WAYLAND_BUFFER_H */
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