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#include <kitchensink/kitchensink.h>
#include <SDL2/SDL.h>
#include <stdio.h>
#include <stdbool.h>
/*
* Note! This example does not do proper error handling etc.
* It is for example use only!
*/
#define AUDIOBUFFER_SIZE (1024 * 64)
#define ATLAS_WIDTH 4096
#define ATLAS_HEIGHT 4096
#define ATLAS_MAX 1024
int read_callback(void *userdata, uint8_t *buf, int buf_size) {
FILE *fd = (FILE*)userdata;
if(!feof(fd)) {
return fread(buf, 1, buf_size, fd);
}
return -1;
}
int64_t seek_callback(void *userdata, int64_t offset, int whence) {
FILE *fd = (FILE*)userdata;
if(fseek(fd, offset, whence)) {
return -1;
}
return ftell(fd);
}
int main(int argc, char *argv[]) {
int err = 0, ret = 0;
const char* filename = NULL;
SDL_Window *window = NULL;
SDL_Renderer *renderer = NULL;
bool run = true;
Kit_Source *src = NULL;
Kit_Player *player = NULL;
SDL_AudioSpec wanted_spec, audio_spec;
SDL_AudioDeviceID audio_dev;
char audiobuf[AUDIOBUFFER_SIZE];
// Get filename to open
if(argc != 2) {
fprintf(stderr, "Usage: custom <filename>\n");
return 0;
}
filename = argv[1];
// Init SDL
err = SDL_Init(SDL_INIT_VIDEO|SDL_INIT_AUDIO);
if(err != 0) {
fprintf(stderr, "Unable to initialize SDL2!\n");
return 1;
}
// Create a resizable window.
window = SDL_CreateWindow("Example Player", SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED, 1280, 720, SDL_WINDOW_RESIZABLE);
if(window == NULL) {
fprintf(stderr, "Unable to create a new window!\n");
return 1;
}
// Create an accelerated renderer. Enable vsync, so we don't need to play around with SDL_Delay.
renderer = SDL_CreateRenderer(window, -1, SDL_RENDERER_ACCELERATED|SDL_RENDERER_PRESENTVSYNC);
if(window == NULL) {
fprintf(stderr, "Unable to create a renderer!\n");
return 1;
}
// Initialize Kitchensink with network and libass support.
err = Kit_Init(KIT_INIT_NETWORK|KIT_INIT_ASS);
if(err != 0) {
fprintf(stderr, "Unable to initialize Kitchensink: %s", Kit_GetError());
return 1;
}
// Open file with fopen. We then proceed to read this with our custom file handlers.
FILE *fd = fopen(filename, "rb");
if(fd == NULL) {
fprintf(stderr, "Unable to open file '%s' for reading\n", filename);
return 1;
}
// Open up the custom source. Declare read & seek callbacks, and transport FD in userdata.
src = Kit_CreateSourceFromCustom(read_callback, seek_callback, fd);
if(src == NULL) {
fprintf(stderr, "Unable to load file '%s': %s\n", filename, Kit_GetError());
return 1;
}
// Create the player. Pick best video, audio and subtitle streams, and set subtitle
// rendering resolution to screen resolution.
player = Kit_CreatePlayer(
src,
Kit_GetBestSourceStream(src, KIT_STREAMTYPE_VIDEO),
Kit_GetBestSourceStream(src, KIT_STREAMTYPE_AUDIO),
Kit_GetBestSourceStream(src, KIT_STREAMTYPE_SUBTITLE),
1280, 720);
if(player == NULL) {
fprintf(stderr, "Unable to create player: %s\n", Kit_GetError());
return 1;
}
// Print some information
Kit_PlayerInfo pinfo;
Kit_GetPlayerInfo(player, &pinfo);
// Make sure there is video in the file to play first.
if(Kit_GetPlayerVideoStream(player) == -1) {
fprintf(stderr, "File contains no video!\n");
return 1;
}
// Init audio
SDL_memset(&wanted_spec, 0, sizeof(wanted_spec));
wanted_spec.freq = pinfo.audio.output.samplerate;
wanted_spec.format = pinfo.audio.output.format;
wanted_spec.channels = pinfo.audio.output.channels;
audio_dev = SDL_OpenAudioDevice(NULL, 0, &wanted_spec, &audio_spec, 0);
SDL_PauseAudioDevice(audio_dev, 0);
// Initialize video texture. This will probably end up as YV12 most of the time.
SDL_SetHint(SDL_HINT_RENDER_SCALE_QUALITY, "linear");
SDL_Texture *video_tex = SDL_CreateTexture(
renderer,
pinfo.video.output.format,
SDL_TEXTUREACCESS_STATIC,
pinfo.video.output.width,
pinfo.video.output.height);
if(video_tex == NULL) {
fprintf(stderr, "Error while attempting to create a video texture\n");
return 1;
}
// This is the subtitle texture atlas. This contains all the subtitle image fragments.
SDL_SetHint(SDL_HINT_RENDER_SCALE_QUALITY, "nearest"); // Always nearest for atlas operations
SDL_Texture *subtitle_tex = SDL_CreateTexture(
renderer,
pinfo.subtitle.output.format,
SDL_TEXTUREACCESS_STATIC,
ATLAS_WIDTH, ATLAS_HEIGHT);
if(subtitle_tex == NULL) {
fprintf(stderr, "Error while attempting to create a subtitle texture atlas\n");
return 1;
}
// Make sure subtitle texture is in correct blendmode
SDL_SetTextureBlendMode(subtitle_tex, SDL_BLENDMODE_BLEND);
// Start playback
Kit_PlayerPlay(player);
// Get movie area size
SDL_RenderSetLogicalSize(renderer, pinfo.video.output.width, pinfo.video.output.height);
while(run) {
if(Kit_GetPlayerState(player) == KIT_STOPPED) {
run = false;
continue;
}
SDL_Event event;
while(SDL_PollEvent(&event)) {
switch(event.type) {
case SDL_QUIT:
run = false;
break;
}
}
// Refresh audio
int queued = SDL_GetQueuedAudioSize(audio_dev);
if(queued < AUDIOBUFFER_SIZE) {
int need = AUDIOBUFFER_SIZE - queued;
while(need > 0) {
ret = Kit_GetPlayerAudioData(
player,
(unsigned char*)audiobuf,
AUDIOBUFFER_SIZE);
need -= ret;
if(ret > 0) {
SDL_QueueAudio(audio_dev, audiobuf, ret);
} else {
break;
}
}
// If we now have data, start playback (again)
if(SDL_GetQueuedAudioSize(audio_dev) > 0) {
SDL_PauseAudioDevice(audio_dev, 0);
}
}
// Clear screen with black
SDL_SetRenderDrawColor(renderer, 0, 0, 0, 255);
SDL_RenderClear(renderer);
// Refresh videotexture and render it
Kit_GetPlayerVideoData(player, video_tex);
SDL_RenderCopy(renderer, video_tex, NULL, NULL);
// Refresh subtitle texture atlas and render subtitle frames from it
// For subtitles, use screen size instead of video size for best quality
SDL_Rect sources[ATLAS_MAX];
SDL_Rect targets[ATLAS_MAX];
int got = Kit_GetPlayerSubtitleData(player, subtitle_tex, sources, targets, ATLAS_MAX);
for(int i = 0; i < got; i++) {
SDL_RenderCopy(renderer, subtitle_tex, &sources[i], &targets[i]);
}
// Render to screen + wait for vsync
SDL_RenderPresent(renderer);
}
Kit_ClosePlayer(player);
Kit_CloseSource(src);
fclose(fd);
Kit_Quit();
SDL_DestroyTexture(subtitle_tex);
SDL_DestroyTexture(video_tex);
SDL_CloseAudioDevice(audio_dev);
SDL_DestroyRenderer(renderer);
SDL_DestroyWindow(window);
SDL_Quit();
return 0;
}
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