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#include "../include/VideoPlayer.hpp"
#include <SFML/Window/Mouse.hpp>
#include <mpv/client.h>
#include <mpv/opengl_cb.h>
#include <SFML/OpenGL.hpp>
#include <clocale>
namespace QuickMedia {
static void* getProcAddressMpv(void *funcContext, const char *name) {
return (void*)sf::Context::getFunction(name);
}
static void onMpvRedraw(void *rawVideo) {
VideoPlayer *video_player = (VideoPlayer*)rawVideo;
++video_player->redrawCounter;
}
static void check_error(int status) {
if(status < 0)
fprintf(stderr, "mpv api error: %s\n", mpv_error_string(status));
}
static void mpv_set_option_bool(mpv_handle *mpv, const char *option, bool value) {
int int_value = value;
check_error(mpv_set_option(mpv, option, MPV_FORMAT_FLAG, &int_value));
}
static void mpv_set_option_int64(mpv_handle *mpv, const char *option, int64_t value) {
check_error(mpv_set_option(mpv, option, MPV_FORMAT_INT64, &value));
}
VideoPlayer::VideoPlayer(unsigned int width, unsigned int height, sf::WindowHandle window_handle, const char *file, bool loop) :
redrawCounter(0),
onPlaybackEndedCallback(nullptr),
mpv(nullptr),
mpvGl(nullptr),
context(std::make_unique<sf::Context>(sf::ContextSettings(), width, height)),
textureBuffer(nullptr),
desired_size(width, height)
{
context->setActive(true);
texture.setSmooth(true);
// mpv_create requires LC_NUMERIC to be set to "C" for some reason, see mpv_create documentation
std::setlocale(LC_NUMERIC, "C");
mpv = mpv_create();
if(!mpv)
throw VideoInitializationException("Failed to create mpv handle");
//check_error(mpv_set_option_string(mpv, "input-default-bindings", "yes"));
//check_error(mpv_set_option_string(mpv, "input-vo-keyboard", "yes"));
check_error(mpv_set_option_string(mpv, "cache-secs", "120"));
check_error(mpv_set_option_string(mpv, "demuxer-max-bytes", "20M"));
check_error(mpv_set_option_string(mpv, "demuxer-max-back-bytes", "10M"));
//mpv_set_option_bool(mpv, "osc", true);
//mpv_set_option_int64(mpv, "wid", window_handle);
if(mpv_initialize(mpv) < 0)
throw VideoInitializationException("Failed to initialize mpv");
check_error(mpv_set_option_string(mpv, "vo", "opengl-cb"));
check_error(mpv_set_option_string(mpv, "hwdec", "auto"));
if(loop)
check_error(mpv_set_option_string(mpv, "loop", "inf"));
mpvGl = (mpv_opengl_cb_context*)mpv_get_sub_api(mpv, MPV_SUB_API_OPENGL_CB);
if(!mpvGl)
throw VideoInitializationException("Failed to initialize mpv opengl render context");
mpv_opengl_cb_set_update_callback(mpvGl, onMpvRedraw, this);
if(mpv_opengl_cb_init_gl(mpvGl, nullptr, getProcAddressMpv, nullptr) < 0)
throw VideoInitializationException("Failed to initialize mpv gl callback func");
context->setActive(false);
seekbar.setFillColor(sf::Color::White);
seekbar_background.setFillColor(sf::Color(0, 0, 0, 150));
load_file(file);
}
VideoPlayer::~VideoPlayer() {
if(mpvGl)
mpv_opengl_cb_set_update_callback(mpvGl, nullptr, nullptr);
free(textureBuffer);
mpv_opengl_cb_uninit_gl(mpvGl);
mpv_detach_destroy(mpv);
}
void VideoPlayer::setPosition(float x, float y) {
sprite.setPosition(x, y);
}
// TODO: Fix this, it's incorrect
static void wrap_sprite_to_size(sf::Sprite &sprite, sf::Vector2i texture_size, const sf::Vector2f &size) {
auto image_size = sf::Vector2f(texture_size.x, texture_size.y);
double overflow_x = image_size.x - size.x;
double overflow_y = image_size.y - size.y;
auto scale = sprite.getScale();
float scale_ratio = scale.x / scale.y;
bool reverse = overflow_x < 0.0f && overflow_y < 0.0f;
if((reverse && overflow_x * scale_ratio < overflow_y) || overflow_x * scale_ratio > overflow_y) {
float overflow_ratio = overflow_x / image_size.x;
float scale_x = 1.0f - overflow_ratio;
sprite.setScale(scale_x, scale_x * scale_ratio);
} else {
float overflow_ratio = overflow_y / image_size.y;
float scale_y = 1.0f - overflow_ratio;
sprite.setScale(scale_y * scale_ratio, scale_y);
}
}
void VideoPlayer::resize(const sf::Vector2i &size) {
desired_size = size;
if(!textureBuffer)
return;
wrap_sprite_to_size(sprite, video_size, sf::Vector2f(desired_size.x, desired_size.y));
auto image_scale = sprite.getScale();
auto image_size = sf::Vector2f(video_size.x, video_size.y);
image_size.x *= image_scale.x;
image_size.y *= image_scale.y;
sprite.setPosition(desired_size.x * 0.5f - image_size.x * 0.5f, desired_size.y * 0.5f - image_size.y * 0.5f);
}
void VideoPlayer::draw(sf::RenderWindow &window) {
while(true) {
mpv_event *mpvEvent = mpv_wait_event(mpv, 0.0);
if(mpvEvent->event_id == MPV_EVENT_NONE)
break;
else if(mpvEvent->event_id == MPV_EVENT_SHUTDOWN)
return;
else if(mpvEvent->event_id == MPV_EVENT_VIDEO_RECONFIG) {
int64_t w, h;
if (mpv_get_property(mpv, "dwidth", MPV_FORMAT_INT64, &w) >= 0 &&
mpv_get_property(mpv, "dheight", MPV_FORMAT_INT64, &h) >= 0 &&
w > 0 && h > 0 && (w != video_size.x || h != video_size.y))
{
video_size.x = w;
video_size.y = h;
// TODO: Verify if it's valid to re-create the texture like this,
// instead of using deconstructor
if(texture.create(w, h)) {
void *newTextureBuf = realloc(textureBuffer, w * h * 4);
if(newTextureBuf)
textureBuffer = (sf::Uint8*)newTextureBuf;
}
context.reset(new sf::Context(sf::ContextSettings(), w, h));
context->setActive(true);
glViewport(0, 0, w, h);
context->setActive(false);
resize(desired_size);
}
} else if(mpvEvent->event_id == MPV_EVENT_END_FILE) {
if(onPlaybackEndedCallback)
onPlaybackEndedCallback();
} else {
//printf("Mpv event: %s\n", mpv_event_name(mpvEvent->event_id));
}
}
if(redrawCounter > 0 && textureBuffer) {
--redrawCounter;
auto textureSize = texture.getSize();
context->setActive(true);
//mpv_render_context_render(mpvGl, params);
mpv_opengl_cb_draw(mpvGl, 0, textureSize.x, textureSize.y);
// TODO: Instead of copying video to cpu buffer and then to texture, copy directly from video buffer to texture buffer
glReadPixels(0, 0, textureSize.x, textureSize.y, GL_RGBA, GL_UNSIGNED_BYTE, textureBuffer);
texture.update(textureBuffer);
sprite.setTexture(texture, true);
mpv_opengl_cb_report_flip(mpvGl, 0);
context->setActive(false);
}
window.draw(sprite);
double pos = 0.0;
mpv_get_property(mpv, "percent-pos", MPV_FORMAT_DOUBLE, &pos);
pos *= 0.01;
auto textureSize = sprite.getTextureRect();
auto scale = sprite.getScale();
auto video_size = sf::Vector2f(textureSize.width * scale.x, textureSize.height * scale.y);
const float seekbar_height = video_size.y * 0.025f;
seekbar.setPosition(sprite.getPosition() + sf::Vector2f(0.0f, video_size.y - seekbar_height));
seekbar.setSize(sf::Vector2f(video_size.x * pos, seekbar_height));
window.draw(seekbar);
seekbar_background.setPosition(seekbar.getPosition() + sf::Vector2f(video_size.x * pos, 0.0f));
seekbar_background.setSize(sf::Vector2f(video_size.x - video_size.x * pos, seekbar_height));
window.draw(seekbar_background);
if(sf::Mouse::isButtonPressed(sf::Mouse::Left)) {
auto mouse_pos = sf::Mouse::getPosition(window);
auto seekbar_pos = seekbar.getPosition();
float diff_x = mouse_pos.x - seekbar_pos.x;
if(diff_x >= 0.0f && diff_x <= video_size.x && mouse_pos.y >= seekbar_pos.y && mouse_pos.y <= seekbar_pos.y + seekbar_height) {
double new_pos = ((double)diff_x / video_size.x) * 100.0;
mpv_set_property(mpv, "percent-pos", MPV_FORMAT_DOUBLE, &new_pos);
}
}
}
void VideoPlayer::load_file(const std::string &path) {
const char *cmd[] = { "loadfile", path.c_str(), nullptr };
mpv_command(mpv, cmd);
}
}
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