ref: cd9b82d924e2924ef6f92fdb61552426489c4624
dir: mp3dec/player/player.cpp
#include <stdio.h>
#include <string.h>
#include <string>
#include <map>
#include <vector>
#include <SDL2/SDL.h>
#include "glad.h"
#if defined(__APPLE__)
#define USE_GLES3
#include <OpenGL/gl3.h>
#endif
#include "FreeSans.h"
#include "audio_sdl.h"
#include "decode.h"
#define STB_IMAGE_IMPLEMENTATION
#include "stb_image.h"
//#define NK_INCLUDE_FIXED_TYPES
//#define NK_INCLUDE_STANDARD_IO
#define NK_INCLUDE_STANDARD_VARARGS
#define NK_INCLUDE_DEFAULT_ALLOCATOR
#define NK_INCLUDE_VERTEX_BUFFER_OUTPUT
#define NK_INCLUDE_FONT_BAKING
#define NK_INCLUDE_DEFAULT_FONT
#define NK_IMPLEMENTATION
#define NK_SDL_GL3_IMPLEMENTATION
#include "nuklear.h"
#include "nuklear_sdl_gl3.h"
#include "style.h"
#define MAX_VERTEX_BUFFER 512 * 1024
#define MAX_ELEMENT_BUFFER 128 * 1024
#ifdef USE_GLES3
static PFNGLGENERATEMIPMAPPROC glGenerateMipmap;
#endif
static void *_ctx;
static SDL_Window *_mainWindow;
static SDL_GLContext _mainContext;
static std::map<std::string, int> _previews;
static std::vector<std::string> _playlist;
static void *_render;
static bool _closeNextFrame;
decoder _dec;
static int load_image(const stbi_uc *data, int len)
{
GLuint tex;
int width, height, n;
unsigned char *pix = stbi_load_from_memory(data, len, &width, &height, &n, 4);
if (!pix)
return 0;
glGenTextures(1, &tex);
glBindTexture(GL_TEXTURE_2D, tex);
#ifndef USE_GLES3
glTexParameteri(GL_TEXTURE_2D, GL_GENERATE_MIPMAP, GL_TRUE);
#endif
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_NEAREST);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR_MIPMAP_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA8, width, height, 0, GL_RGBA, GL_UNSIGNED_BYTE, pix);
#ifdef USE_GLES3
if (glGenerateMipmap)
glGenerateMipmap(GL_TEXTURE_2D);
#endif
return (int)tex;
}
static void close()
{
nk_sdl_shutdown();
SDL_GL_MakeCurrent(_mainWindow, _mainContext);
for (auto it = _previews.begin(); it != _previews.end(); it++)
{
GLuint tex = it->second;
glDeleteTextures(1, &tex);
}
SDL_GL_DeleteContext(_mainContext);
SDL_DestroyWindow(_mainWindow);
SDL_Quit();
}
static int init()
{
SDL_SetHint(SDL_HINT_VIDEO_HIGHDPI_DISABLED, "0");
if (!SDL_Init(SDL_INIT_VIDEO) < 0)
{
printf("error: sdl2 video init failed %s\n", SDL_GetError());
return false;
}
#ifdef USE_GLES3
SDL_GL_SetAttribute(SDL_GL_CONTEXT_MAJOR_VERSION, 3);
SDL_GL_SetAttribute(SDL_GL_CONTEXT_MINOR_VERSION, 3);
SDL_GL_SetAttribute(SDL_GL_CONTEXT_PROFILE_MASK, SDL_GL_CONTEXT_PROFILE_CORE);
// SDL_GL_SetAttribute(GLFW_OPENGL_FORWARD_COMPAT, GL_TRUE);
#else
SDL_GL_SetAttribute(SDL_GL_CONTEXT_MAJOR_VERSION, 2);
SDL_GL_SetAttribute(SDL_GL_CONTEXT_MINOR_VERSION, 0);
#endif
_mainWindow = SDL_CreateWindow("minimp3", SDL_WINDOWPOS_CENTERED, SDL_WINDOWPOS_CENTERED, 400, 600, SDL_WINDOW_RESIZABLE|SDL_WINDOW_OPENGL|SDL_WINDOW_SHOWN|SDL_WINDOW_ALLOW_HIGHDPI);
if (!_mainWindow)
{
printf("error: create window failed: %s\n", SDL_GetError());
fflush(stdout);
exit(1);
}
if((_mainContext = SDL_GL_CreateContext(_mainWindow)) == NULL)
{
printf("error: create context failed: %s\n", SDL_GetError());
fflush(stdout);
exit(1);
}
SDL_GL_MakeCurrent(_mainWindow, _mainContext);
#ifdef USE_GLES3
glGenerateMipmap = (PFNGLGENERATEMIPMAPPROC)SDL_GL_GetProcAddress("glGenerateMipmap");
#endif
gladLoadGL();
_ctx = (void*)nk_sdl_init(_mainWindow);
struct nk_font_atlas *atlas;
struct nk_font_config fconfig = nk_font_config(20);
fconfig.range = nk_font_cyrillic_glyph_ranges();
nk_sdl_font_stash_begin(&atlas);
atlas->default_font = nk_font_atlas_add_from_memory(atlas, FreeSans, FreeSansLen, 20, &fconfig);;
nk_sdl_font_stash_end();
return true;
}
static void tick()
{
nk_context *ctx = (nk_context *)_ctx;
float bg[4];
nk_color_fv(bg, nk_rgb(28,48,62));
int width, height, i;
SDL_GL_GetDrawableSize(_mainWindow, &width, &height);
glViewport(0, 0, width, height);
glClearColor(bg[0], bg[1], bg[2], bg[3]);
glClear(GL_COLOR_BUFFER_BIT);
// Run events
SDL_Event event;
nk_input_begin(ctx);
while(SDL_PollEvent(&event))
{
nk_sdl_handle_event(&event);
if(event.type == SDL_QUIT)
_closeNextFrame = true;
}
nk_input_end(ctx);
if (nk_begin(ctx, "Player", nk_rect(0, 0, width, height), 0))
{
nk_layout_row_dynamic(ctx, 25, 2);
nk_label(ctx, "Theme:", NK_TEXT_LEFT);
static int _cur_theme;
static const char *themes[] = { "black", "white", "red", "blue", "dark"};
int res = nk_combo(ctx, themes, sizeof(themes)/sizeof(themes[0]), _cur_theme, 25, nk_vec2(200,200));
if (_cur_theme != res)
set_style(ctx, (theme)res);
_cur_theme = res;
nk_layout_row_dynamic(ctx, 25, 2);
nk_label(ctx, "Audio Playback Device:", NK_TEXT_LEFT);
static int _cur_apdevice;
const char **devs = (const char**)alloca(1*sizeof(char*));
//for (i = 0; i < ; i++)
// devs[i] = ;
devs[0] = "default";
res = nk_combo(ctx, devs, 1, _cur_apdevice, 25, nk_vec2(200,200));
//if (_cur_apdevice != res)
// change_device(res);
_cur_apdevice = res;
nk_layout_row_dynamic(ctx, 25, 1);
nk_button_push_behavior(ctx, NK_BUTTON_DEFAULT2);
static int _play_state, _selected;
if (!_play_state)
{
if (nk_button_label(ctx, "Play") && _selected < (int)_playlist.size())
{
_play_state = 1;
sdl_audio_set_dec(_render, 0);
open_dec(&_dec, _playlist[_selected].c_str());
sdl_audio_set_dec(_render, &_dec);
}
} else
{
if (nk_button_label(ctx, "Stop"))
{
_play_state = 0;
sdl_audio_set_dec(_render, 0);
//stop();
}
}
nk_button_pop_behavior(ctx);
static size_t progress = 0;
uint64_t cur_sample = _dec.mp3d.cur_sample;
progress = cur_sample;
nk_progress(ctx, &progress, _dec.mp3d.samples, NK_MODIFIABLE);
if (progress != cur_sample)
{
SDL_PauseAudio(1);
mp3dec_ex_seek(&_dec.mp3d, progress);
SDL_PauseAudio(0);
}
if (nk_tree_push(ctx, NK_TREE_TAB, "Playlist", NK_MAXIMIZED))
{
for (i = 0; i < (int)_playlist.size(); i++)
{
nk_layout_row_begin(ctx, NK_DYNAMIC, 32, 2);
nk_layout_row_push(ctx, 0.1f);
auto av = _previews.find(_playlist[i].c_str());
if (av != _previews.end())
{
nk_image(ctx, nk_image_id(av->second));
}
nk_layout_row_push(ctx, 0.9f);
const char *name = _playlist[i].c_str();
if (nk_select_label(ctx, name, NK_TEXT_LEFT, _selected == i))
_selected = i;
nk_layout_row_end(ctx);
}
nk_tree_pop(ctx);
}
}
nk_end(ctx);
nk_sdl_render(NK_ANTI_ALIASING_ON, MAX_VERTEX_BUFFER, MAX_ELEMENT_BUFFER);
SDL_GL_SwapWindow(_mainWindow);
}
int main(int argc, char *argv[])
{
_closeNextFrame = false;
sdl_audio_init(&_render, 44100, 2, 0, 0);
init();
for (int i = 1; i < argc; i++)
_playlist.push_back(argv[i]);
while (!_closeNextFrame)
{
tick();
}
close();
sdl_audio_release(_render);
}