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mpv/video/out/vo_rpi.c
Ho Ming Shun 940f871514 vo_rpi: fix DISPMANX_UPDATE_HANDLE_T leak 
Fixes handle leak that happened whenever tvservice callback was invoked.

Powering on the TV causes HDMI unplug and attached events to be sent to
the tvservice callback.

This meant you could only power on/off your TV a finite number of times
before you were unable to allocate additional resources from VideoCore
(usually resulting in a "Could not get DISPMANX objects." error).

Furthermore because the VideoCore kernel driver does not cleanup handles
when a process dies, the only way to recover from the leak was to reboot
the RPI.
2021-09-28 16:46:52 +00:00

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/*
* This file is part of mpv.
*
* 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/>.
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <math.h>
#include <stdbool.h>
#include <assert.h>
#include <bcm_host.h>
#include <interface/mmal/mmal.h>
#include <interface/mmal/util/mmal_util.h>
#include <interface/mmal/util/mmal_default_components.h>
#include <interface/mmal/vc/mmal_vc_api.h>
#include <EGL/egl.h>
#include <EGL/eglext.h>
#include <libavutil/rational.h>
#include "common/common.h"
#include "common/msg.h"
#include "opengl/common.h"
#include "options/m_config.h"
#include "osdep/timer.h"
#include "vo.h"
#include "win_state.h"
#include "video/mp_image.h"
#include "sub/osd.h"
#include "opengl/ra_gl.h"
#include "gpu/video.h"
struct mp_egl_rpi {
struct mp_log *log;
struct GL *gl;
struct ra *ra;
EGLDisplay egl_display;
EGLConfig egl_config;
EGLContext egl_context;
EGLSurface egl_surface;
// yep, the API keeps a pointer to it
EGL_DISPMANX_WINDOW_T egl_window;
};
struct priv {
DISPMANX_DISPLAY_HANDLE_T display;
DISPMANX_ELEMENT_HANDLE_T window;
DISPMANX_ELEMENT_HANDLE_T osd_overlay;
DISPMANX_UPDATE_HANDLE_T update;
uint32_t w, h;
uint32_t x, y;
double display_fps;
double osd_pts;
struct mp_osd_res osd_res;
struct m_config_cache *opts_cache;
struct mp_egl_rpi egl;
struct gl_video *gl_video;
struct mpgl_osd *osd;
MMAL_COMPONENT_T *renderer;
bool renderer_enabled;
bool display_synced, skip_osd;
struct mp_image *next_image;
// for RAM input
MMAL_POOL_T *swpool;
pthread_mutex_t display_mutex;
pthread_cond_t display_cond;
int64_t vsync_counter;
bool reload_display;
int background_layer;
int video_layer;
int osd_layer;
int display_nr;
int layer;
int background;
int enable_osd;
};
// Magic alignments (in pixels) expected by the MMAL internals.
#define ALIGN_W 32
#define ALIGN_H 16
static void recreate_renderer(struct vo *vo);
static void *get_proc_address(const GLubyte *name)
{
void *p = eglGetProcAddress(name);
// EGL 1.4 (supported by the RPI firmware) does not necessarily return
// function pointers for core functions.
if (!p) {
void *h = dlopen("/opt/vc/lib/libbrcmGLESv2.so", RTLD_LAZY);
if (h) {
p = dlsym(h, name);
dlclose(h);
}
}
return p;
}
static EGLConfig select_fb_config_egl(struct mp_egl_rpi *p)
{
EGLint attributes[] = {
EGL_SURFACE_TYPE, EGL_WINDOW_BIT,
EGL_RED_SIZE, 8,
EGL_GREEN_SIZE, 8,
EGL_BLUE_SIZE, 8,
EGL_DEPTH_SIZE, 0,
EGL_RENDERABLE_TYPE, EGL_OPENGL_ES2_BIT,
EGL_NONE
};
EGLint config_count;
EGLConfig config;
eglChooseConfig(p->egl_display, attributes, &config, 1, &config_count);
if (!config_count) {
MP_FATAL(p, "Could find EGL configuration!\n");
return NULL;
}
return config;
}
static void mp_egl_rpi_destroy(struct mp_egl_rpi *p)
{
if (p->egl_display) {
eglMakeCurrent(p->egl_display, EGL_NO_SURFACE, EGL_NO_SURFACE,
EGL_NO_CONTEXT);
}
if (p->egl_surface)
eglDestroySurface(p->egl_display, p->egl_surface);
if (p->egl_context)
eglDestroyContext(p->egl_display, p->egl_context);
p->egl_context = EGL_NO_CONTEXT;
eglReleaseThread();
p->egl_display = EGL_NO_DISPLAY;
talloc_free(p->gl);
p->gl = NULL;
}
static int mp_egl_rpi_init(struct mp_egl_rpi *p, DISPMANX_ELEMENT_HANDLE_T window,
int w, int h)
{
p->egl_display = eglGetDisplay(EGL_DEFAULT_DISPLAY);
if (!eglInitialize(p->egl_display, NULL, NULL)) {
MP_FATAL(p, "EGL failed to initialize.\n");
goto fail;
}
eglBindAPI(EGL_OPENGL_ES_API);
EGLConfig config = select_fb_config_egl(p);
if (!config)
goto fail;
p->egl_window = (EGL_DISPMANX_WINDOW_T){
.element = window,
.width = w,
.height = h,
};
p->egl_surface = eglCreateWindowSurface(p->egl_display, config,
&p->egl_window, NULL);
if (p->egl_surface == EGL_NO_SURFACE) {
MP_FATAL(p, "Could not create EGL surface!\n");
goto fail;
}
EGLint context_attributes[] = {
EGL_CONTEXT_CLIENT_VERSION, 2,
EGL_NONE
};
p->egl_context = eglCreateContext(p->egl_display, config,
EGL_NO_CONTEXT, context_attributes);
if (p->egl_context == EGL_NO_CONTEXT) {
MP_FATAL(p, "Could not create EGL context!\n");
goto fail;
}
eglMakeCurrent(p->egl_display, p->egl_surface, p->egl_surface,
p->egl_context);
p->gl = talloc_zero(NULL, struct GL);
const char *exts = eglQueryString(p->egl_display, EGL_EXTENSIONS);
mpgl_load_functions(p->gl, get_proc_address, exts, p->log);
if (!p->gl->version && !p->gl->es)
goto fail;
p->ra = ra_create_gl(p->gl, p->log);
if (!p->ra)
goto fail;
return 0;
fail:
mp_egl_rpi_destroy(p);
return -1;
}
// Make mpi point to buffer, assuming MMAL_ENCODING_I420.
// buffer can be NULL.
// Return the required buffer space.
static size_t layout_buffer(struct mp_image *mpi, MMAL_BUFFER_HEADER_T *buffer,
struct mp_image_params *params)
{
assert(params->imgfmt == IMGFMT_420P);
mp_image_set_params(mpi, params);
int w = MP_ALIGN_UP(params->w, ALIGN_W);
int h = MP_ALIGN_UP(params->h, ALIGN_H);
uint8_t *cur = buffer ? buffer->data : NULL;
size_t size = 0;
for (int i = 0; i < 3; i++) {
int div = i ? 2 : 1;
mpi->planes[i] = cur;
mpi->stride[i] = w / div;
size_t plane_size = h / div * mpi->stride[i];
if (cur)
cur += plane_size;
size += plane_size;
}
return size;
}
static void update_osd(struct vo *vo)
{
struct priv *p = vo->priv;
if (!p->enable_osd)
return;
if (!gl_video_check_osd_change(p->gl_video, &p->osd_res, p->osd_pts)) {
p->skip_osd = true;
return;
}
MP_STATS(vo, "start rpi_osd");
struct vo_frame frame = {0};
struct ra_fbo target = {
.tex = ra_create_wrapped_fb(p->egl.ra, 0, p->osd_res.w, p->osd_res.h),
.flip = true,
};
gl_video_set_osd_pts(p->gl_video, p->osd_pts);
gl_video_render_frame(p->gl_video, &frame, target, RENDER_FRAME_DEF);
ra_tex_free(p->egl.ra, &target.tex);
MP_STATS(vo, "stop rpi_osd");
}
static void resize(struct vo *vo)
{
struct priv *p = vo->priv;
MMAL_PORT_T *input = p->renderer->input[0];
struct mp_rect src, dst;
vo_get_src_dst_rects(vo, &src, &dst, &p->osd_res);
int rotate[] = {MMAL_DISPLAY_ROT0,
MMAL_DISPLAY_ROT90,
MMAL_DISPLAY_ROT180,
MMAL_DISPLAY_ROT270};
int src_w = src.x1 - src.x0, src_h = src.y1 - src.y0,
dst_w = dst.x1 - dst.x0, dst_h = dst.y1 - dst.y0;
int p_x, p_y;
av_reduce(&p_x, &p_y, dst_w * src_h, src_w * dst_h, 16000);
MMAL_DISPLAYREGION_T dr = {
.hdr = { .id = MMAL_PARAMETER_DISPLAYREGION,
.size = sizeof(MMAL_DISPLAYREGION_T), },
.src_rect = { .x = src.x0, .y = src.y0, .width = src_w, .height = src_h },
.dest_rect = { .x = dst.x0 + p->x, .y = dst.y0 + p->y,
.width = dst_w, .height = dst_h },
.layer = p->video_layer,
.display_num = p->display_nr,
.pixel_x = p_x,
.pixel_y = p_y,
.transform = rotate[vo->params ? vo->params->rotate / 90 : 0],
.fullscreen = vo->opts->fullscreen,
.set = MMAL_DISPLAY_SET_SRC_RECT | MMAL_DISPLAY_SET_DEST_RECT |
MMAL_DISPLAY_SET_LAYER | MMAL_DISPLAY_SET_NUM |
MMAL_DISPLAY_SET_PIXEL | MMAL_DISPLAY_SET_TRANSFORM |
MMAL_DISPLAY_SET_FULLSCREEN,
};
if (vo->params && (vo->params->rotate % 180) == 90) {
MPSWAP(int, dr.src_rect.x, dr.src_rect.y);
MPSWAP(int, dr.src_rect.width, dr.src_rect.height);
}
if (mmal_port_parameter_set(input, &dr.hdr))
MP_WARN(vo, "could not set video rectangle\n");
if (p->gl_video)
gl_video_resize(p->gl_video, &src, &dst, &p->osd_res);
}
static void destroy_overlays(struct vo *vo)
{
struct priv *p = vo->priv;
if (p->window)
vc_dispmanx_element_remove(p->update, p->window);
p->window = 0;
gl_video_uninit(p->gl_video);
p->gl_video = NULL;
ra_free(&p->egl.ra);
mp_egl_rpi_destroy(&p->egl);
if (p->osd_overlay)
vc_dispmanx_element_remove(p->update, p->osd_overlay);
p->osd_overlay = 0;
}
static int update_display_size(struct vo *vo)
{
struct priv *p = vo->priv;
uint32_t n_w = 0, n_h = 0;
if (graphics_get_display_size(0, &n_w, &n_h) < 0) {
MP_FATAL(vo, "Could not get display size.\n");
return -1;
}
if (p->w == n_w && p->h == n_h)
return 0;
p->w = n_w;
p->h = n_h;
MP_VERBOSE(vo, "Display size: %dx%d\n", p->w, p->h);
return 0;
}
static int create_overlays(struct vo *vo)
{
struct priv *p = vo->priv;
destroy_overlays(vo);
if (!p->display)
return -1;
if (vo->opts->fullscreen && p->background) {
// Use the whole screen.
VC_RECT_T dst = {.width = p->w, .height = p->h};
VC_RECT_T src = {.width = 1 << 16, .height = 1 << 16};
VC_DISPMANX_ALPHA_T alpha = {
.flags = DISPMANX_FLAGS_ALPHA_FIXED_ALL_PIXELS,
.opacity = 0xFF,
};
p->window = vc_dispmanx_element_add(p->update, p->display,
p->background_layer,
&dst, 0, &src,
DISPMANX_PROTECTION_NONE,
&alpha, 0, 0);
if (!p->window) {
MP_FATAL(vo, "Could not add DISPMANX element.\n");
return -1;
}
}
if (p->enable_osd) {
VC_RECT_T dst = {.x = p->x, .y = p->y,
.width = p->osd_res.w, .height = p->osd_res.h};
VC_RECT_T src = {.width = p->osd_res.w << 16, .height = p->osd_res.h << 16};
VC_DISPMANX_ALPHA_T alpha = {
.flags = DISPMANX_FLAGS_ALPHA_FROM_SOURCE,
.opacity = 0xFF,
};
p->osd_overlay = vc_dispmanx_element_add(p->update, p->display,
p->osd_layer,
&dst, 0, &src,
DISPMANX_PROTECTION_NONE,
&alpha, 0, 0);
if (!p->osd_overlay) {
MP_FATAL(vo, "Could not add DISPMANX element.\n");
return -1;
}
if (mp_egl_rpi_init(&p->egl, p->osd_overlay,
p->osd_res.w, p->osd_res.h) < 0)
{
MP_FATAL(vo, "EGL/GLES initialization for OSD renderer failed.\n");
return -1;
}
p->gl_video = gl_video_init(p->egl.ra, vo->log, vo->global);
gl_video_set_clear_color(p->gl_video, (struct m_color){.a = 0});
gl_video_set_osd_source(p->gl_video, vo->osd);
}
p->display_fps = 0;
TV_GET_STATE_RESP_T tvstate;
TV_DISPLAY_STATE_T tvstate_disp;
if (!vc_tv_get_state(&tvstate) && !vc_tv_get_display_state(&tvstate_disp)) {
if (tvstate_disp.state & (VC_HDMI_HDMI | VC_HDMI_DVI)) {
p->display_fps = tvstate_disp.display.hdmi.frame_rate;
HDMI_PROPERTY_PARAM_T param = {
.property = HDMI_PROPERTY_PIXEL_CLOCK_TYPE,
};
if (!vc_tv_hdmi_get_property(&param) &&
param.param1 == HDMI_PIXEL_CLOCK_TYPE_NTSC)
p->display_fps = p->display_fps / 1.001;
} else {
p->display_fps = tvstate_disp.display.sdtv.frame_rate;
}
}
resize(vo);
vo_event(vo, VO_EVENT_WIN_STATE);
vc_dispmanx_update_submit_sync(p->update);
p->update = vc_dispmanx_update_start(10);
return 0;
}
static int set_geometry(struct vo *vo)
{
struct priv *p = vo->priv;
if (vo->opts->fullscreen) {
vo->dwidth = p->w;
vo->dheight = p->h;
p->x = p->y = 0;
} else {
struct vo_win_geometry geo;
struct mp_rect screenrc = {0, 0, p->w, p->h};
vo_calc_window_geometry(vo, &screenrc, &geo);
vo_apply_window_geometry(vo, &geo);
p->x = geo.win.x0;
p->y = geo.win.y0;
}
resize(vo);
if (create_overlays(vo) < 0)
return -1;
return 0;
}
static void wait_next_vsync(struct vo *vo)
{
struct priv *p = vo->priv;
pthread_mutex_lock(&p->display_mutex);
struct timespec end = mp_rel_time_to_timespec(0.050);
int64_t old = p->vsync_counter;
while (old == p->vsync_counter && !p->reload_display) {
if (pthread_cond_timedwait(&p->display_cond, &p->display_mutex, &end))
break;
}
pthread_mutex_unlock(&p->display_mutex);
}
static void flip_page(struct vo *vo)
{
struct priv *p = vo->priv;
if (!p->renderer_enabled)
return;
struct mp_image *mpi = p->next_image;
p->next_image = NULL;
// For OSD
if (!p->skip_osd && p->egl.gl)
eglSwapBuffers(p->egl.egl_display, p->egl.egl_surface);
p->skip_osd = false;
if (mpi) {
MMAL_PORT_T *input = p->renderer->input[0];
MMAL_BUFFER_HEADER_T *ref = (void *)mpi->planes[3];
// Assume this field is free for use by us.
ref->user_data = mpi;
if (mmal_port_send_buffer(input, ref)) {
MP_ERR(vo, "could not queue picture!\n");
talloc_free(mpi);
}
}
if (p->display_synced)
wait_next_vsync(vo);
}
static void free_mmal_buffer(void *arg)
{
MMAL_BUFFER_HEADER_T *buffer = arg;
mmal_buffer_header_release(buffer);
}
static void draw_frame(struct vo *vo, struct vo_frame *frame)
{
struct priv *p = vo->priv;
if (!p->renderer_enabled)
return;
mp_image_t *mpi = NULL;
if (!frame->redraw && !frame->repeat)
mpi = mp_image_new_ref(frame->current);
talloc_free(p->next_image);
p->next_image = NULL;
if (mpi)
p->osd_pts = mpi->pts;
// Redraw only if the OSD has meaningfully changed, which we assume it
// hasn't when a frame is merely repeated for display sync.
p->skip_osd = !frame->redraw && frame->repeat;
if (!p->skip_osd && p->egl.gl)
update_osd(vo);
p->display_synced = frame->display_synced;
if (mpi && mpi->imgfmt != IMGFMT_MMAL) {
MMAL_BUFFER_HEADER_T *buffer = mmal_queue_wait(p->swpool->queue);
if (!buffer) {
talloc_free(mpi);
MP_ERR(vo, "Can't allocate buffer.\n");
return;
}
mmal_buffer_header_reset(buffer);
struct mp_image *new_ref = mp_image_new_custom_ref(NULL, buffer,
free_mmal_buffer);
if (!new_ref) {
mmal_buffer_header_release(buffer);
talloc_free(mpi);
MP_ERR(vo, "Out of memory.\n");
return;
}
mp_image_setfmt(new_ref, IMGFMT_MMAL);
new_ref->planes[3] = (void *)buffer;
struct mp_image dmpi = {0};
buffer->length = layout_buffer(&dmpi, buffer, vo->params);
mp_image_copy(&dmpi, mpi);
talloc_free(mpi);
mpi = new_ref;
}
p->next_image = mpi;
}
static int query_format(struct vo *vo, int format)
{
return format == IMGFMT_MMAL || format == IMGFMT_420P;
}
static MMAL_FOURCC_T map_csp(enum mp_csp csp)
{
switch (csp) {
case MP_CSP_BT_601: return MMAL_COLOR_SPACE_ITUR_BT601;
case MP_CSP_BT_709: return MMAL_COLOR_SPACE_ITUR_BT709;
case MP_CSP_SMPTE_240M: return MMAL_COLOR_SPACE_SMPTE240M;
default: return MMAL_COLOR_SPACE_UNKNOWN;
}
}
static void control_port_cb(MMAL_PORT_T *port, MMAL_BUFFER_HEADER_T *buffer)
{
mmal_buffer_header_release(buffer);
}
static void input_port_cb(MMAL_PORT_T *port, MMAL_BUFFER_HEADER_T *buffer)
{
struct mp_image *mpi = buffer->user_data;
talloc_free(mpi);
}
static void disable_renderer(struct vo *vo)
{
struct priv *p = vo->priv;
if (p->renderer_enabled) {
mmal_port_disable(p->renderer->control);
mmal_port_disable(p->renderer->input[0]);
mmal_port_flush(p->renderer->control);
mmal_port_flush(p->renderer->input[0]);
mmal_component_disable(p->renderer);
}
mmal_pool_destroy(p->swpool);
p->swpool = NULL;
p->renderer_enabled = false;
}
static int reconfig(struct vo *vo, struct mp_image_params *params)
{
struct priv *p = vo->priv;
MMAL_PORT_T *input = p->renderer->input[0];
bool opaque = params->imgfmt == IMGFMT_MMAL;
if (!p->display)
return -1;
disable_renderer(vo);
input->format->encoding = opaque ? MMAL_ENCODING_OPAQUE : MMAL_ENCODING_I420;
input->format->es->video.width = MP_ALIGN_UP(params->w, ALIGN_W);
input->format->es->video.height = MP_ALIGN_UP(params->h, ALIGN_H);
input->format->es->video.crop = (MMAL_RECT_T){0, 0, params->w, params->h};
input->format->es->video.par = (MMAL_RATIONAL_T){params->p_w, params->p_h};
input->format->es->video.color_space = map_csp(params->color.space);
if (mmal_port_format_commit(input))
return -1;
input->buffer_num = MPMAX(input->buffer_num_min,
input->buffer_num_recommended) + 3;
input->buffer_size = MPMAX(input->buffer_size_min,
input->buffer_size_recommended);
if (!opaque) {
size_t size = layout_buffer(&(struct mp_image){0}, NULL, params);
if (input->buffer_size != size) {
MP_FATAL(vo, "We disagree with MMAL about buffer sizes.\n");
return -1;
}
p->swpool = mmal_pool_create(input->buffer_num, input->buffer_size);
if (!p->swpool) {
MP_FATAL(vo, "Could not allocate buffer pool.\n");
return -1;
}
}
if (set_geometry(vo) < 0)
return -1;
p->renderer_enabled = true;
if (mmal_port_enable(p->renderer->control, control_port_cb))
return -1;
if (mmal_port_enable(input, input_port_cb))
return -1;
if (mmal_component_enable(p->renderer)) {
MP_FATAL(vo, "Failed to enable video renderer.\n");
return -1;
}
resize(vo);
return 0;
}
static struct mp_image *take_screenshot(struct vo *vo)
{
struct priv *p = vo->priv;
if (!p->display)
return NULL;
struct mp_image *img = mp_image_alloc(IMGFMT_BGR0, p->w, p->h);
if (!img)
return NULL;
DISPMANX_RESOURCE_HANDLE_T resource =
vc_dispmanx_resource_create(VC_IMAGE_ARGB8888,
img->w | ((img->w * 4) << 16), img->h,
&(int32_t){0});
if (!resource)
goto fail;
if (vc_dispmanx_snapshot(p->display, resource, 0))
goto fail;
VC_RECT_T rc = {.width = img->w, .height = img->h};
if (vc_dispmanx_resource_read_data(resource, &rc, img->planes[0], img->stride[0]))
goto fail;
vc_dispmanx_resource_delete(resource);
return img;
fail:
vc_dispmanx_resource_delete(resource);
talloc_free(img);
return NULL;
}
static void set_fullscreen(struct vo *vo) {
struct priv *p = vo->priv;
if (p->renderer_enabled)
set_geometry(vo);
vo->want_redraw = true;
}
static int control(struct vo *vo, uint32_t request, void *data)
{
struct priv *p = vo->priv;
switch (request) {
case VOCTRL_VO_OPTS_CHANGED: {
void *opt;
while (m_config_cache_get_next_changed(p->opts_cache, &opt)) {
struct mp_vo_opts *opts = p->opts_cache->opts;
if (&opts->fullscreen == opt)
set_fullscreen(vo);
}
return VO_TRUE;
}
case VOCTRL_SET_PANSCAN:
if (p->renderer_enabled)
resize(vo);
vo->want_redraw = true;
return VO_TRUE;
case VOCTRL_REDRAW_FRAME:
update_osd(vo);
return VO_TRUE;
case VOCTRL_SCREENSHOT_WIN:
*(struct mp_image **)data = take_screenshot(vo);
return VO_TRUE;
case VOCTRL_CHECK_EVENTS: {
pthread_mutex_lock(&p->display_mutex);
bool reload_required = p->reload_display;
p->reload_display = false;
pthread_mutex_unlock(&p->display_mutex);
if (reload_required)
recreate_renderer(vo);
return VO_TRUE;
}
case VOCTRL_GET_DISPLAY_FPS:
*(double *)data = p->display_fps;
return VO_TRUE;
case VOCTRL_GET_DISPLAY_RES:
((int *)data)[0] = p->w;
((int *)data)[1] = p->h;
return VO_TRUE;
}
return VO_NOTIMPL;
}
static void tv_callback(void *callback_data, uint32_t reason, uint32_t param1,
uint32_t param2)
{
struct vo *vo = callback_data;
struct priv *p = vo->priv;
pthread_mutex_lock(&p->display_mutex);
p->reload_display = true;
pthread_cond_signal(&p->display_cond);
pthread_mutex_unlock(&p->display_mutex);
vo_wakeup(vo);
}
static void vsync_callback(DISPMANX_UPDATE_HANDLE_T u, void *arg)
{
struct vo *vo = arg;
struct priv *p = vo->priv;
pthread_mutex_lock(&p->display_mutex);
p->vsync_counter += 1;
pthread_cond_signal(&p->display_cond);
pthread_mutex_unlock(&p->display_mutex);
}
static void destroy_dispmanx(struct vo *vo)
{
struct priv *p = vo->priv;
disable_renderer(vo);
destroy_overlays(vo);
if (p->update)
vc_dispmanx_update_submit_sync(p->update);
p->update = 0;
if (p->display) {
vc_dispmanx_vsync_callback(p->display, NULL, NULL);
vc_dispmanx_display_close(p->display);
}
p->display = 0;
}
static int recreate_dispmanx(struct vo *vo)
{
struct priv *p = vo->priv;
p->display = vc_dispmanx_display_open(p->display_nr);
p->update = vc_dispmanx_update_start(0);
if (!p->display || !p->update) {
MP_FATAL(vo, "Could not get DISPMANX objects.\n");
if (p->display)
vc_dispmanx_display_close(p->display);
p->display = 0;
p->update = 0;
return -1;
}
update_display_size(vo);
vc_dispmanx_vsync_callback(p->display, vsync_callback, vo);
return 0;
}
static void recreate_renderer(struct vo *vo)
{
MP_WARN(vo, "Recreating renderer after display change.\n");
destroy_dispmanx(vo);
recreate_dispmanx(vo);
if (vo->params) {
if (reconfig(vo, vo->params) < 0)
MP_FATAL(vo, "Recreation failed.\n");
}
}
static void uninit(struct vo *vo)
{
struct priv *p = vo->priv;
vc_tv_unregister_callback_full(tv_callback, vo);
talloc_free(p->next_image);
destroy_dispmanx(vo);
if (p->renderer)
mmal_component_release(p->renderer);
mmal_vc_deinit();
pthread_cond_destroy(&p->display_cond);
pthread_mutex_destroy(&p->display_mutex);
}
static int preinit(struct vo *vo)
{
struct priv *p = vo->priv;
p->background_layer = p->layer;
p->video_layer = p->layer + 1;
p->osd_layer = p->layer + 2;
p->egl.log = vo->log;
bcm_host_init();
if (mmal_vc_init()) {
MP_FATAL(vo, "Could not initialize MMAL.\n");
return -1;
}
pthread_mutex_init(&p->display_mutex, NULL);
pthread_cond_init(&p->display_cond, NULL);
p->opts_cache = m_config_cache_alloc(p, vo->global, &vo_sub_opts);
if (recreate_dispmanx(vo) < 0)
goto fail;
if (update_display_size(vo) < 0)
goto fail;
if (mmal_component_create(MMAL_COMPONENT_DEFAULT_VIDEO_RENDERER, &p->renderer))
{
MP_FATAL(vo, "Could not create MMAL renderer.\n");
goto fail;
}
vc_tv_register_callback(tv_callback, vo);
return 0;
fail:
uninit(vo);
return -1;
}
#define OPT_BASE_STRUCT struct priv
static const struct m_option options[] = {
{"display", OPT_INT(display_nr)},
{"layer", OPT_INT(layer), OPTDEF_INT(-10)},
{"background", OPT_FLAG(background)},
{"osd", OPT_FLAG(enable_osd), OPTDEF_INT(1)},
{0},
};
const struct vo_driver video_out_rpi = {
.description = "Raspberry Pi (MMAL)",
.name = "rpi",
.caps = VO_CAP_ROTATE90,
.preinit = preinit,
.query_format = query_format,
.reconfig = reconfig,
.control = control,
.draw_frame = draw_frame,
.flip_page = flip_page,
.uninit = uninit,
.priv_size = sizeof(struct priv),
.options = options,
.options_prefix = "rpi",
};
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