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add timer for play video

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This commit is contained in:
Jie 2024-02-20 16:45:03 +08:00
parent f9b439add8
commit 3697de0b4a
2 changed files with 76 additions and 58 deletions
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40
main.cc
View File

@ -1,4 +1,5 @@
#include <iostream>
#include <thread>
#include <SDL2/SDL.h>
#include <SDL2/SDL_image.h>
#include <filesystem>
@ -9,13 +10,15 @@
#include "shader.h"
using std::cout, std::endl;
struct OpenglVideoParam{
struct OpenglVideoParam
{
SDL_GLContext glContext;
unsigned int VAO, VBO, EBO;
unsigned int texs[3];
};
int InitVideo(SDL_Window*& window, const char* targetFilepath, DecoderParam& decoderParam, OpenglVideoParam& openglVideoParam, ShaderService*& shaderService){
int InitVideo(SDL_Window *&window, const char *targetFilepath, DecoderParam &decoderParam, OpenglVideoParam &openglVideoParam, ShaderService *&shaderService)
{
InitDecoder(targetFilepath, decoderParam);
int client_width = decoderParam.width / 2;
int client_height = decoderParam.height / 2;
@ -91,14 +94,14 @@ int InitVideo(SDL_Window*& window, const char* targetFilepath, DecoderParam& dec
shaderService->SetUniform<int>("textureV", 2);
return 0;
}
void OpenglRender(DecoderParam& decoderParam, OpenglVideoParam& openglVideoParam, ShaderService* shaderService){
void OpenglRender(DecoderParam &decoderParam, OpenglVideoParam &openglVideoParam, ShaderService *shaderService)
{
auto frame = RequestFrame(decoderParam);
if(frame == nullptr)
return;
int64_t pts = frame->pts;
static bool first_frame = true;
// TODO: TIMER
SDL_Delay(100);
glActiveTexture(GL_TEXTURE0);
glBindTexture(GL_TEXTURE_2D, openglVideoParam.texs[0]);
glPixelStoref(GL_UNPACK_ROW_LENGTH, frame->linesize[0]);
glTexImage2D(GL_TEXTURE_2D, 0, GL_RED, frame->width, frame->height, 0, GL_RED, GL_UNSIGNED_BYTE, frame->data[0]);
@ -118,18 +121,21 @@ auto frame = RequestFrame(decoderParam);
shaderService->Use();
glBindVertexArray(openglVideoParam.VAO);
glDrawElements(GL_TRIANGLES, 6, GL_UNSIGNED_INT, 0);
av_frame_free(&frame);
}
int main(int argc, char **const argv)
{
// Check File
const char *targetFilepath = argv[1];
if(targetFilepath == nullptr || !std::filesystem::exists(targetFilepath)){
if (targetFilepath == nullptr || !std::filesystem::exists(targetFilepath))
{
cout << "File Not Exist\n";
return 0;
}
const FileType fileType = Util::GetFileType(targetFilepath);
if(fileType == FileType::ERRORTYPE){
if (fileType == FileType::ERRORTYPE)
{
cout << "unsupport file type\n";
return 0;
}
@ -141,20 +147,27 @@ int main(int argc, char **const argv)
DecoderParam decoderParam{};
OpenglVideoParam openglVideoParam{};
ShaderService *shaderService = nullptr;
double framerate = .0f;
if (SDL_Init(SDL_INIT_EVERYTHING) < 0)
{
cout << SDL_GetError() << "\n";
return -1;
}
switch(fileType){
case FileType::VIDEO:{
switch (fileType)
{
case FileType::VIDEO:
{
InitVideo(window, targetFilepath, decoderParam, openglVideoParam, shaderService);
auto& time_base = decoderParam.fmtCtx->streams[decoderParam.videoStreamIndex]->time_base;
framerate = (double)time_base.num / time_base.den;
break;
}
case FileType::IMG:{
case FileType::IMG:
{
break;
}
case FileType::MUSIC:{
case FileType::MUSIC:
{
break;
}
default:
@ -162,6 +175,7 @@ int main(int argc, char **const argv)
}
bool quit = false;
auto current_time = std::chrono::system_clock::now();
SDL_Event event;
while (!quit)
{
@ -191,6 +205,8 @@ int main(int argc, char **const argv)
case FileType::VIDEO:
OpenglRender(decoderParam, openglVideoParam, shaderService);
SDL_GL_SwapWindow(window);
std::this_thread::sleep_until(current_time + std::chrono::milliseconds((int)(framerate * 1000)));
current_time = std::chrono::system_clock::now();
break;
default:

2
src/decoder.cc
View File

@ -41,6 +41,8 @@ AVFrame* RequestFrame(DecoderParam& param){
return frame;
}else if(ret == AVERROR(EAGAIN)){
av_frame_unref(frame);
}else{
return nullptr;
}
}
}