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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 {
void* getProcAddressMpv(void *funcContext, const char *name) {
return (void*)sf::Context::getFunction(name);
}
void onMpvRedraw(void *rawVideo) {
VideoPlayer *video_player = (VideoPlayer*)rawVideo;
++video_player->redrawCounter;
}
VideoPlayer::VideoPlayer(unsigned int width, unsigned int height, const char *file, bool loop) :
redrawCounter(0),
context(sf::ContextSettings(), width, height),
onPlaybackEndedCallback(nullptr),
mpv(nullptr),
mpvGl(nullptr),
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");
mpv_set_option_string(mpv, "input-default-bindings", "yes");
mpv_set_option_string(mpv, "input-vo-keyboard", "yes");
if(mpv_initialize(mpv) < 0)
throw VideoInitializationException("Failed to initialize mpv");
mpv_set_option_string(mpv, "vo", "opengl-cb");
mpv_set_option_string(mpv, "hwdec", "auto");
if(loop)
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);
}
void VideoPlayer::resize(const sf::Vector2i &size) {
desired_size = size;
if(!textureBuffer)
return;
float video_ratio = (double)video_size.x / (double)video_size.y;
float scale_x = 1.0f;
float scale_y = 1.0f;
if(video_ratio >= 0.0f) {
double ratio_x = (double)size.x / (double)video_size.x;
scale_x = ratio_x;
scale_y = ratio_x;
sprite.setPosition(0.0f, size.y * 0.5f - video_size.y * scale_y * 0.5f);
} else {
double ratio_y = (double)size.y / (double)video_size.y;
scale_x = ratio_y;
scale_y = ratio_y;
sprite.setPosition(size.x * 0.5f - video_size.x * scale_x * 0.5f, 0.0f);
}
sprite.setScale(scale_x, scale_y);
}
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.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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