mpv/video/out/vo_wayland.c

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/*
* This file is part of mpv video player.
* Copyright © 2013 Alexander Preisinger <alexander.preisinger@gmail.com>
*
Relicense some non-MPlayer source files to LGPL 2.1 or later This covers source files which were added in mplayer2 and mpv times only, and where all code is covered by LGPL relicensing agreements. There are probably more files to which this applies, but I'm being conservative here. A file named ao_sdl.c exists in MPlayer too, but the mpv one is a complete rewrite, and was added some time after the original ao_sdl.c was removed. The same applies to vo_sdl.c, for which the SDL2 API is radically different in addition (MPlayer supports SDL 1.2 only). common.c contains only code written by me. But common.h is a strange case: although it originally was named mp_common.h and exists in MPlayer too, by now it contains only definitions written by uau and me. The exceptions are the CONTROL_ defines - thus not changing the license of common.h yet. codec_tags.c contained once large tables generated from MPlayer's codecs.conf, but all of these tables were removed. From demux_playlist.c I'm removing a code fragment from someone who was not asked; this probably could be done later (see commit 15dccc37). misc.c is a bit complicated to reason about (it was split off mplayer.c and thus contains random functions out of this file), but actually all functions have been added post-MPlayer. Except get_relative_time(), which was written by uau, but looks similar to 3 different versions of something similar in each of the Unix/win32/OSX timer source files. I'm not sure what that means in regards to copyright, so I've just moved it into another still-GPL source file for now. screenshot.c once had some minor parts of MPlayer's vf_screenshot.c, but they're all gone.
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* 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
Relicense some non-MPlayer source files to LGPL 2.1 or later This covers source files which were added in mplayer2 and mpv times only, and where all code is covered by LGPL relicensing agreements. There are probably more files to which this applies, but I'm being conservative here. A file named ao_sdl.c exists in MPlayer too, but the mpv one is a complete rewrite, and was added some time after the original ao_sdl.c was removed. The same applies to vo_sdl.c, for which the SDL2 API is radically different in addition (MPlayer supports SDL 1.2 only). common.c contains only code written by me. But common.h is a strange case: although it originally was named mp_common.h and exists in MPlayer too, by now it contains only definitions written by uau and me. The exceptions are the CONTROL_ defines - thus not changing the license of common.h yet. codec_tags.c contained once large tables generated from MPlayer's codecs.conf, but all of these tables were removed. From demux_playlist.c I'm removing a code fragment from someone who was not asked; this probably could be done later (see commit 15dccc37). misc.c is a bit complicated to reason about (it was split off mplayer.c and thus contains random functions out of this file), but actually all functions have been added post-MPlayer. Except get_relative_time(), which was written by uau, but looks similar to 3 different versions of something similar in each of the Unix/win32/OSX timer source files. I'm not sure what that means in regards to copyright, so I've just moved it into another still-GPL source file for now. screenshot.c once had some minor parts of MPlayer's vf_screenshot.c, but they're all gone.
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* GNU Lesser General Public License for more details.
*
Relicense some non-MPlayer source files to LGPL 2.1 or later This covers source files which were added in mplayer2 and mpv times only, and where all code is covered by LGPL relicensing agreements. There are probably more files to which this applies, but I'm being conservative here. A file named ao_sdl.c exists in MPlayer too, but the mpv one is a complete rewrite, and was added some time after the original ao_sdl.c was removed. The same applies to vo_sdl.c, for which the SDL2 API is radically different in addition (MPlayer supports SDL 1.2 only). common.c contains only code written by me. But common.h is a strange case: although it originally was named mp_common.h and exists in MPlayer too, by now it contains only definitions written by uau and me. The exceptions are the CONTROL_ defines - thus not changing the license of common.h yet. codec_tags.c contained once large tables generated from MPlayer's codecs.conf, but all of these tables were removed. From demux_playlist.c I'm removing a code fragment from someone who was not asked; this probably could be done later (see commit 15dccc37). misc.c is a bit complicated to reason about (it was split off mplayer.c and thus contains random functions out of this file), but actually all functions have been added post-MPlayer. Except get_relative_time(), which was written by uau, but looks similar to 3 different versions of something similar in each of the Unix/win32/OSX timer source files. I'm not sure what that means in regards to copyright, so I've just moved it into another still-GPL source file for now. screenshot.c once had some minor parts of MPlayer's vf_screenshot.c, but they're all gone.
2016-01-19 17:36:06 +00:00
* You should have received a copy of the GNU Lesser General Public
* License along with mpv. If not, see <http://www.gnu.org/licenses/>.
*/
#include <stdio.h>
#include <stdbool.h>
#include <assert.h>
#include <libavutil/common.h>
#include "config.h"
#include "vo.h"
#include "video/mp_image.h"
#include "video/sws_utils.h"
#include "sub/osd.h"
#include "sub/img_convert.h"
#include "common/msg.h"
#include "input/input.h"
#include "osdep/endian.h"
#include "osdep/timer.h"
#include "wayland_common.h"
#include "video/out/wayland/buffer.h"
static void draw_image(struct vo *vo, mp_image_t *mpi);
static void draw_osd(struct vo *vo);
static const struct wl_buffer_listener buffer_listener;
// TODO: pay attention to the reported subpixel order
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static const format_t format_table[] = {
{WL_SHM_FORMAT_ARGB8888, IMGFMT_BGRA}, // 8b 8g 8r 8a
{WL_SHM_FORMAT_XRGB8888, IMGFMT_BGR0},
#if BYTE_ORDER == LITTLE_ENDIAN
{WL_SHM_FORMAT_RGB565, IMGFMT_RGB565}, // 5b 6g 5r
#endif
{WL_SHM_FORMAT_RGB888, IMGFMT_BGR24}, // 8b 8g 8r
{WL_SHM_FORMAT_BGR888, IMGFMT_RGB24}, // 8r 8g 8b
{WL_SHM_FORMAT_XBGR8888, IMGFMT_RGB0},
{WL_SHM_FORMAT_RGBX8888, IMGFMT_0BGR},
{WL_SHM_FORMAT_BGRX8888, IMGFMT_0RGB},
{WL_SHM_FORMAT_ABGR8888, IMGFMT_RGBA},
{WL_SHM_FORMAT_RGBA8888, IMGFMT_ABGR},
{WL_SHM_FORMAT_BGRA8888, IMGFMT_ARGB},
};
#define MAX_FORMAT_ENTRIES (sizeof(format_table) / sizeof(format_table[0]))
#define DEFAULT_FORMAT_ENTRY 1
#define DEFAULT_ALPHA_FORMAT_ENTRY 0
struct priv;
// We only use double buffering but the creation and usage is still open to
// triple buffering. Triple buffering is now removed, because double buffering
// is now pixel-perfect.
struct buffer_pool {
shm_buffer_t **buffers;
shm_buffer_t *front_buffer; // just pointers to any of the buffers
shm_buffer_t *back_buffer;
uint32_t buffer_no;
};
struct supported_format {
format_t format;
bool is_alpha;
struct wl_list link;
};
struct priv {
struct vo *vo;
struct vo_wayland_state *wl;
struct wl_list format_list;
const format_t *video_format; // pointer to element in supported_format list
struct mp_rect src;
struct mp_rect dst;
int src_w, src_h;
int dst_w, dst_h;
struct mp_osd_res osd;
struct mp_sws_context *sws;
struct mp_image_params in_format;
struct buffer_pool video_bufpool;
struct mp_image *original_image;
int width; // width of the original image
int height;
int x, y; // coords for resizing
struct wl_surface *osd_surfaces[MAX_OSD_PARTS];
struct wl_subsurface *osd_subsurfaces[MAX_OSD_PARTS];
shm_buffer_t *osd_buffers[MAX_OSD_PARTS];
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// this id tells us if the subtitle part has changed or not
int change_id[MAX_OSD_PARTS];
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// options
int enable_alpha;
int use_rgb565;
};
static bool is_alpha_format(const format_t *fmt)
{
return !!(mp_imgfmt_get_desc(fmt->mp_format).flags & MP_IMGFLAG_ALPHA);
}
static const format_t* is_wayland_format_supported(struct priv *p,
enum wl_shm_format fmt)
{
struct supported_format *sf;
// find the matching format first
wl_list_for_each(sf, &p->format_list, link) {
if (sf->format.wl_format == fmt) {
return &sf->format;
}
}
return NULL;
}
// additional buffer functions
static void buffer_finalise_front(shm_buffer_t *buf)
{
SHM_BUFFER_SET_BUSY(buf);
SHM_BUFFER_CLEAR_DIRTY(buf);
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}
static void buffer_finalise_back(shm_buffer_t *buf)
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{
SHM_BUFFER_SET_DIRTY(buf);
}
static struct mp_image buffer_get_mp_image(struct priv *p,
shm_buffer_t *buf)
{
struct mp_image img = {0};
mp_image_set_params(&img, &p->sws->dst);
img.w = buf->stride / buf->bytes;
img.h = buf->height;
img.planes[0] = buf->data;
img.stride[0] = buf->stride;
return img;
}
// buffer pool functions
static void buffer_pool_reinit(struct priv *p,
struct buffer_pool *pool,
uint32_t buffer_no,
uint32_t width, uint32_t height,
format_t fmt,
struct wl_shm *shm)
{
if (!pool->buffers)
pool->buffers = calloc(buffer_no, sizeof(shm_buffer_t*));
pool->buffer_no = buffer_no;
for (uint32_t i = 0; i < buffer_no; ++i) {
if (pool->buffers[i] == NULL)
pool->buffers[i] = shm_buffer_create(width, height, fmt,
shm, &buffer_listener);
else
shm_buffer_resize(pool->buffers[i], width, height);
}
pool->back_buffer = pool->buffers[0];
pool->front_buffer = pool->buffers[1];
}
static bool buffer_pool_resize(struct buffer_pool *pool,
int width,
int height)
{
bool ret = true;
for (uint32_t i = 0; ret && i < pool->buffer_no; ++i)
shm_buffer_resize(pool->buffers[i], width, height);
return ret;
}
static void buffer_pool_destroy(struct buffer_pool *pool)
{
for (uint32_t i = 0; i < pool->buffer_no; ++i)
shm_buffer_destroy(pool->buffers[i]);
free(pool->buffers);
pool->front_buffer = NULL;
pool->back_buffer = NULL;
pool->buffers = NULL;
}
static void buffer_pool_swap(struct buffer_pool *pool)
{
if (SHM_BUFFER_IS_DIRTY(pool->back_buffer)) {
shm_buffer_t *tmp = pool->back_buffer;
pool->back_buffer = pool->front_buffer;
pool->front_buffer = tmp;
}
}
// returns NULL if the back buffer is busy
static shm_buffer_t * buffer_pool_get_back(struct buffer_pool *pool)
{
if (!pool->back_buffer || SHM_BUFFER_IS_BUSY(pool->back_buffer))
return NULL;
return pool->back_buffer;
}
static shm_buffer_t * buffer_pool_get_front(struct buffer_pool *pool)
{
return pool->front_buffer;
}
static bool redraw_frame(struct priv *p)
{
draw_image(p->vo, NULL);
return true;
}
static bool resize(struct priv *p)
{
struct vo_wayland_state *wl = p->wl;
if (!p->video_bufpool.back_buffer || SHM_BUFFER_IS_BUSY(p->video_bufpool.back_buffer))
return false; // skip resizing if we can't guarantee pixel perfectness!
int32_t x = wl->window.sh_x;
int32_t y = wl->window.sh_y;
wl->vo->dwidth = wl->window.sh_width;
wl->vo->dheight = wl->window.sh_height;
vo_get_src_dst_rects(p->vo, &p->src, &p->dst, &p->osd);
p->src_w = p->src.x1 - p->src.x0;
p->src_h = p->src.y1 - p->src.y0;
p->dst_w = p->dst.x1 - p->dst.x0;
p->dst_h = p->dst.y1 - p->dst.y0;
mp_input_set_mouse_transform(p->vo->input_ctx, &p->dst, NULL);
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MP_DBG(wl, "resizing %dx%d -> %dx%d\n", wl->window.width,
wl->window.height,
p->dst_w,
p->dst_h);
if (x != 0)
x = wl->window.width - p->dst_w;
if (y != 0)
y = wl->window.height - p->dst_h;
mp_sws_set_from_cmdline(p->sws, p->vo->opts->sws_opts);
p->sws->src = p->in_format;
p->sws->dst = (struct mp_image_params) {
.imgfmt = p->video_format->mp_format,
.w = p->dst_w,
.h = p->dst_h,
.p_w = 1,
.p_h = 1,
};
mp_image_params_guess_csp(&p->sws->dst);
if (mp_sws_reinit(p->sws) < 0)
return false;
if (!buffer_pool_resize(&p->video_bufpool, p->dst_w, p->dst_h)) {
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MP_ERR(wl, "failed to resize video buffers\n");
return false;
}
wl->window.width = p->dst_w;
wl->window.height = p->dst_h;
// if no alpha enabled format is used then create an opaque region to allow
// the compositor to optimize the drawing of the window
if (!p->enable_alpha) {
struct wl_region *opaque =
wl_compositor_create_region(wl->display.compositor);
wl_region_add(opaque, 0, 0, p->dst_w, p->dst_h);
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wl_surface_set_opaque_region(wl->window.video_surface, opaque);
wl_region_destroy(opaque);
}
p->x = x;
p->y = y;
p->wl->window.events = 0;
p->vo->want_redraw = true;
return true;
}
/* wayland listeners */
static void buffer_handle_release(void *data, struct wl_buffer *buffer)
{
shm_buffer_t *buf = data;
if (SHM_BUFFER_IS_ONESHOT(buf)) {
shm_buffer_destroy(buf);
return;
}
SHM_BUFFER_CLEAR_BUSY(buf);
// does nothing and returns 0 if no pending resize flag was set
shm_buffer_pending_resize(buf);
}
static const struct wl_buffer_listener buffer_listener = {
buffer_handle_release
};
static void shm_handle_format(void *data,
struct wl_shm *wl_shm,
uint32_t format)
{
struct priv *p = data;
for (uint32_t i = 0; i < MAX_FORMAT_ENTRIES; ++i) {
if (format_table[i].wl_format == format) {
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MP_INFO(p->wl, "format %s supported by hw\n",
mp_imgfmt_to_name(format_table[i].mp_format));
struct supported_format *sf = talloc(p, struct supported_format);
sf->format = format_table[i];
sf->is_alpha = is_alpha_format(&sf->format);
wl_list_insert(&p->format_list, &sf->link);
}
}
}
static const struct wl_shm_listener shm_listener = {
shm_handle_format
};
/* mpv interface */
static void draw_image(struct vo *vo, mp_image_t *mpi)
{
struct priv *p = vo->priv;
if (mpi) {
talloc_free(p->original_image);
p->original_image = mpi;
}
if (!vo_wayland_wait_frame(vo))
MP_DBG(p->wl, "discarding frame callback\n");
shm_buffer_t *buf = buffer_pool_get_back(&p->video_bufpool);
if (!buf) {
MP_VERBOSE(p->wl, "can't draw, back buffer is busy\n");
return;
}
struct mp_image img = buffer_get_mp_image(p, buf);
if (p->original_image) {
struct mp_image src = *p->original_image;
struct mp_rect src_rc = p->src;
src_rc.x0 = MP_ALIGN_DOWN(src_rc.x0, src.fmt.align_x);
src_rc.y0 = MP_ALIGN_DOWN(src_rc.y0, src.fmt.align_y);
mp_image_crop_rc(&src, src_rc);
mp_sws_scale(p->sws, &img, &src);
} else {
mp_image_clear(&img, 0, 0, img.w, img.h);
}
buffer_finalise_back(buf);
draw_osd(vo);
}
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static void draw_osd_cb(void *ctx, struct sub_bitmaps *imgs)
{
struct priv *p = ctx;
int id = imgs->render_index;
struct wl_surface *s = p->osd_surfaces[id];
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if (imgs->change_id != p->change_id[id]) {
p->change_id[id] = imgs->change_id;
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struct mp_rect bb;
if (!mp_sub_bitmaps_bb(imgs, &bb))
return;
int width = mp_rect_w(bb);
int height = mp_rect_h(bb);
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if (!p->osd_buffers[id]) {
p->osd_buffers[id] = shm_buffer_create(width,
height,
format_table[DEFAULT_ALPHA_FORMAT_ENTRY],
p->wl->display.shm,
&buffer_listener);
}
else if (SHM_BUFFER_IS_BUSY(p->osd_buffers[id])) {
// freed on release in buffer_listener
// guarantees pixel perfect resizing of subtitles and osd
SHM_BUFFER_SET_ONESHOT(p->osd_buffers[id]);
p->osd_buffers[id] = shm_buffer_create(width,
height,
format_table[DEFAULT_ALPHA_FORMAT_ENTRY],
p->wl->display.shm,
&buffer_listener);
}
else {
shm_buffer_resize(p->osd_buffers[id], width, height);
}
shm_buffer_t *buf = p->osd_buffers[id];
SHM_BUFFER_SET_BUSY(buf);
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struct mp_image wlimg = buffer_get_mp_image(p, buf);
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for (int n = 0; n < imgs->num_parts; n++) {
struct sub_bitmap *sub = &imgs->parts[n];
memcpy_pic(wlimg.planes[0], sub->bitmap, sub->w * 4, sub->h,
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wlimg.stride[0], sub->stride);
}
wl_subsurface_set_position(p->osd_subsurfaces[id], 0, 0);
wl_surface_attach(s, buf->buffer, bb.x0, bb.y0);
wl_surface_damage(s, 0, 0, width, height);
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wl_surface_commit(s);
}
else {
// p->osd_buffer, guaranteed to exist here
assert(p->osd_buffers[id]);
wl_surface_attach(s, p->osd_buffers[id]->buffer, 0, 0);
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wl_surface_commit(s);
}
}
static const bool osd_formats[SUBBITMAP_COUNT] = {
[SUBBITMAP_RGBA] = true,
};
static void draw_osd(struct vo *vo)
{
struct priv *p = vo->priv;
// detach all buffers and attach all needed buffers in osd_draw
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// only the most recent attach & commit is applied once the parent surface
// is committed
for (int i = 0; i < MAX_OSD_PARTS; ++i) {
struct wl_surface *s = p->osd_surfaces[i];
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wl_surface_attach(s, NULL, 0, 0);
wl_surface_damage(s, 0, 0, p->dst_w, p->dst_h);
wl_surface_commit(s);
}
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double pts = p->original_image ? p->original_image->pts : 0;
osd_draw(vo->osd, p->osd, pts, 0, osd_formats, draw_osd_cb, p);
}
static void redraw(void *data, uint32_t time)
{
struct priv *p = data;
shm_buffer_t *buf = buffer_pool_get_front(&p->video_bufpool);
wl_surface_attach(p->wl->window.video_surface, buf->buffer, p->x, p->y);
wl_surface_damage(p->wl->window.video_surface, 0, 0, p->dst_w, p->dst_h);
buffer_finalise_front(buf);
p->x = 0;
p->y = 0;
}
static void flip_page(struct vo *vo)
{
struct priv *p = vo->priv;
buffer_pool_swap(&p->video_bufpool);
if (!p->wl->frame.callback)
vo_wayland_request_frame(vo, p, redraw);
if (!vo_wayland_wait_frame(vo))
MP_DBG(p->wl, "discarding frame callback\n");
}
static int query_format(struct vo *vo, int format)
{
struct priv *p = vo->priv;
struct supported_format *sf;
wl_list_for_each_reverse(sf, &p->format_list, link) {
if (sf->format.mp_format == format)
return 1;
}
if (mp_sws_supported_format(format))
return 1;
return 0;
}
static int reconfig(struct vo *vo, struct mp_image_params *fmt)
{
struct priv *p = vo->priv;
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mp_image_unrefp(&p->original_image);
p->width = fmt->w;
p->height = fmt->h;
p->in_format = *fmt;
struct supported_format *sf;
// find the matching format first
wl_list_for_each(sf, &p->format_list, link) {
if (sf->format.mp_format == fmt->imgfmt &&
(p->enable_alpha == sf->is_alpha))
{
p->video_format = &sf->format;
break;
}
}
if (!p->video_format) {
// if use default is enable overwrite the auto selected one
if (p->enable_alpha)
p->video_format = &format_table[DEFAULT_ALPHA_FORMAT_ENTRY];
else
p->video_format = &format_table[DEFAULT_FORMAT_ENTRY];
}
// overrides alpha
// use rgb565 if performance is your main concern
if (p->use_rgb565) {
MP_INFO(p->wl, "using rgb565\n");
const format_t *entry =
is_wayland_format_supported(p, WL_SHM_FORMAT_RGB565);
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if (entry)
p->video_format = entry;
}
buffer_pool_reinit(p, &p->video_bufpool, 2, p->width, p->height,
*p->video_format, p->wl->display.shm);
vo_wayland_config(vo);
resize(p);
return 0;
}
static void uninit(struct vo *vo)
{
struct priv *p = vo->priv;
buffer_pool_destroy(&p->video_bufpool);
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talloc_free(p->original_image);
for (int i = 0; i < MAX_OSD_PARTS; ++i) {
shm_buffer_destroy(p->osd_buffers[i]);
wl_subsurface_destroy(p->osd_subsurfaces[i]);
wl_surface_destroy(p->osd_surfaces[i]);
}
vo_wayland_uninit(vo);
}
static int preinit(struct vo *vo)
{
struct priv *p = vo->priv;
struct vo_wayland_state *wl = NULL;
if (!vo_wayland_init(vo))
return -1;
wl = vo->wayland;
p->vo = vo;
p->wl = wl;
p->sws = mp_sws_alloc(vo);
wl_list_init(&p->format_list);
wl_shm_add_listener(wl->display.shm, &shm_listener, p);
wl_display_dispatch(wl->display.display);
// Commits on surfaces bound to a subsurface are cached until the parent
// surface is committed, in this case the video surface.
// Which means we can call commit anywhere.
struct wl_region *input =
wl_compositor_create_region(wl->display.compositor);
for (int i = 0; i < MAX_OSD_PARTS; ++i) {
p->osd_surfaces[i] =
wl_compositor_create_surface(wl->display.compositor);
wl_surface_attach(p->osd_surfaces[i], NULL, 0, 0);
wl_surface_set_input_region(p->osd_surfaces[i], input);
p->osd_subsurfaces[i] =
wl_subcompositor_get_subsurface(wl->display.subcomp,
p->osd_surfaces[i],
wl->window.video_surface); // parent
wl_surface_commit(p->osd_surfaces[i]);
wl_subsurface_set_sync(p->osd_subsurfaces[i]);
}
wl_region_destroy(input);
return 0;
}
static int control(struct vo *vo, uint32_t request, void *data)
{
struct priv *p = vo->priv;
switch (request) {
case VOCTRL_GET_PANSCAN:
return VO_TRUE;
case VOCTRL_SET_PANSCAN:
{
resize(p);
return VO_TRUE;
}
case VOCTRL_REDRAW_FRAME:
return redraw_frame(p);
}
int events = 0;
int r = vo_wayland_control(vo, &events, request, data);
// NOTE: VO_EVENT_EXPOSE is never returned by the wayland backend
if (events & VO_EVENT_RESIZE)
resize(p);
vo_event(vo, events);
return r;
}
#define OPT_BASE_STRUCT struct priv
const struct vo_driver video_out_wayland = {
.description = "Wayland SHM video output",
.name = "wayland",
.priv_size = sizeof(struct priv),
.preinit = preinit,
.query_format = query_format,
.reconfig = reconfig,
.control = control,
.draw_image = draw_image,
.flip_page = flip_page,
.uninit = uninit,
.options = (const struct m_option[]) {
OPT_FLAG("alpha", enable_alpha, 0),
OPT_FLAG("rgb565", use_rgb565, 0),
{0}
},
};