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dijunkun
2023-08-24 17:36:28 +08:00
commit 2b5c0ee533
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368
remote_desk.cpp Normal file
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#include <stdio.h>
#define __STDC_CONSTANT_MACROS
#ifdef _WIN32
// Windows
extern "C" {
#include <libavcodec/avcodec.h>
#include <libavdevice/avdevice.h>
#include <libavformat/avformat.h>
#include <libavutil/imgutils.h>
#include <libswscale/swscale.h>
#include "SDL2/SDL.h"
};
#else
// Linux...
#ifdef __cplusplus
extern "C" {
#endif
#include <SDL/SDL.h>
#include <libavcodec/avcodec.h>
#include <libavdevice/avdevice.h>
#include <libavformat/avformat.h>
#include <libswscale/swscale.h>
#ifdef __cplusplus
};
#endif
#endif
// Output YUV420P
#define OUTPUT_YUV420P 0
//'1' Use Dshow
//'0' Use GDIgrab
#define USE_DSHOW 0
// Refresh Event
#define SFM_REFRESH_EVENT (SDL_USEREVENT + 1)
#define SFM_BREAK_EVENT (SDL_USEREVENT + 2)
int thread_exit = 0;
SDL_Texture *sdlTexture = nullptr;
SDL_Renderer *sdlRenderer = nullptr;
SDL_Rect sdlRect;
int YUV420ToNV12FFmpeg(unsigned char *src_buffer, int width, int height,
unsigned char *des_buffer) {
AVFrame *Input_pFrame = av_frame_alloc();
AVFrame *Output_pFrame = av_frame_alloc();
struct SwsContext *img_convert_ctx = sws_getContext(
width, height, AV_PIX_FMT_NV12, width, height, AV_PIX_FMT_YUV420P,
SWS_FAST_BILINEAR, nullptr, nullptr, nullptr);
av_image_fill_arrays(Input_pFrame->data, Input_pFrame->linesize, src_buffer,
AV_PIX_FMT_NV12, width, height, 1);
av_image_fill_arrays(Output_pFrame->data, Output_pFrame->linesize, des_buffer,
AV_PIX_FMT_YUV420P, width, height, 1);
sws_scale(img_convert_ctx, (uint8_t const **)Input_pFrame->data,
Input_pFrame->linesize, 0, height, Output_pFrame->data,
Output_pFrame->linesize);
if (Input_pFrame) av_free(Input_pFrame);
if (Output_pFrame) av_free(Output_pFrame);
if (img_convert_ctx) sws_freeContext(img_convert_ctx);
return 0;
}
int sfp_refresh_thread(void *opaque) {
thread_exit = 0;
while (!thread_exit) {
SDL_Event event;
event.type = SFM_REFRESH_EVENT;
SDL_PushEvent(&event);
SDL_Delay(40);
}
thread_exit = 0;
// Break
SDL_Event event;
event.type = SFM_BREAK_EVENT;
SDL_PushEvent(&event);
return 0;
}
// Show Dshow Device
// void show_dshow_device() {
// AVFormatContext *pFormatCtx = avformat_alloc_context();
// AVDictionary *options = NULL;
// av_dict_set(&options, "list_devices", "true", 0);
// AVInputFormat *iformat = av_find_input_format("dshow");
// printf("========Device Info=============\n");
// avformat_open_input(&pFormatCtx, "video=dummy", iformat, &options);
// printf("================================\n");
// }
// Show AVFoundation Device
void show_avfoundation_device() {
const AVFormatContext *const_pFormatCtx = avformat_alloc_context();
AVFormatContext *pFormatCtx = const_cast<AVFormatContext *>(const_pFormatCtx);
AVDictionary *options = NULL;
av_dict_set(&options, "list_devices", "true", 0);
const AVInputFormat *const_iformat = av_find_input_format("avfoundation");
AVInputFormat *iformat = const_cast<AVInputFormat *>(const_iformat);
printf("==AVFoundation Device Info===\n");
avformat_open_input(&pFormatCtx, "", iformat, &options);
printf("=============================\n");
}
int main(int argc, char *argv[]) {
AVFormatContext *pFormatCtx;
int i, videoindex;
AVCodecContext *pCodecCtx;
AVCodec *pCodec;
avformat_network_init();
pFormatCtx = avformat_alloc_context();
// Open File
// char filepath[]="src01_480x272_22.h265";
// avformat_open_input(&pFormatCtx,filepath,NULL,NULL)
// Register Device
avdevice_register_all();
// Windows
#ifdef _WIN32
#if USE_DSHOW
// Use dshow
//
// Need to Install screen-capture-recorder
// screen-capture-recorder
// Website: http://sourceforge.net/projects/screencapturer/
//
AVInputFormat *ifmt = av_find_input_format("dshow");
if (avformat_open_input(&pFormatCtx, "video=screen-capture-recorder", ifmt,
NULL) != 0) {
printf("Couldn't open input stream.\n");
return -1;
}
#else
// Use gdigrab
AVDictionary *options = NULL;
// Set some options
// grabbing frame rate
// av_dict_set(&options,"framerate","5",0);
// The distance from the left edge of the screen or desktop
// av_dict_set(&options,"offset_x","20",0);
// The distance from the top edge of the screen or desktop
// av_dict_set(&options,"offset_y","40",0);
// Video frame size. The default is to capture the full screen
// av_dict_set(&options,"video_size","640x480",0);
const AVInputFormat *ifmt = av_find_input_format("gdigrab");
if (avformat_open_input(&pFormatCtx, "desktop", ifmt, &options) != 0) {
printf("Couldn't open input stream.\n");
return -1;
}
#endif
#elif defined linux
// Linux
AVDictionary *options = NULL;
// Set some options
// grabbing frame rate
// av_dict_set(&options,"framerate","5",0);
// Make the grabbed area follow the mouse
// av_dict_set(&options,"follow_mouse","centered",0);
// Video frame size. The default is to capture the full screen
// av_dict_set(&options,"video_size","640x480",0);
AVInputFormat *ifmt = av_find_input_format("x11grab");
// Grab at position 10,20
if (avformat_open_input(&pFormatCtx, ":0.0+10,20", ifmt, &options) != 0) {
printf("Couldn't open input stream.\n");
return -1;
}
#else
show_avfoundation_device();
// Mac
AVInputFormat *ifmt = av_find_input_format("avfoundation");
// Avfoundation
//[video]:[audio]
if (avformat_open_input(&pFormatCtx, "1", ifmt, NULL) != 0) {
printf("Couldn't open input stream.\n");
return -1;
}
#endif
if (avformat_find_stream_info(pFormatCtx, NULL) < 0) {
printf("Couldn't find stream information.\n");
return -1;
}
videoindex = -1;
for (i = 0; i < pFormatCtx->nb_streams; i++)
if (pFormatCtx->streams[i]->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
videoindex = i;
break;
}
if (videoindex == -1) {
printf("Didn't find a video stream.\n");
return -1;
}
// pCodecCtx = pFormatCtx->streams[videoindex]->codec;
pCodecCtx = avcodec_alloc_context3(NULL);
avcodec_parameters_to_context(pCodecCtx,
pFormatCtx->streams[videoindex]->codecpar);
pCodec = const_cast<AVCodec *>(avcodec_find_decoder(pCodecCtx->codec_id));
// pCodec = avcodec_find_decoder(pCodecCtx->codec_id);
if (pCodec == NULL) {
printf("Codec not found.\n");
return -1;
}
if (avcodec_open2(pCodecCtx, pCodec, NULL) < 0) {
printf("Could not open codec.\n");
return -1;
}
AVFrame *pFrame, *pFrameYUV;
pFrame = av_frame_alloc();
pFrameYUV = av_frame_alloc();
// unsigned char *out_buffer=(unsigned char
// *)av_malloc(avpicture_get_size(AV_PIX_FMT_YUV420P, pCodecCtx->width,
// pCodecCtx->height)); avpicture_fill((AVPicture *)pFrameYUV, out_buffer,
// AV_PIX_FMT_YUV420P, pCodecCtx->width, pCodecCtx->height);
// SDL----------------------------
if (SDL_Init(SDL_INIT_VIDEO | SDL_INIT_AUDIO | SDL_INIT_TIMER)) {
printf("Could not initialize SDL - %s\n", SDL_GetError());
return -1;
}
const int pixel_w = 640, pixel_h = 360;
int screen_w = 640, screen_h = 360;
// const SDL_VideoInfo *vi = SDL_GetVideoInfo();
// Half of the Desktop's width and height.
screen_w = 640;
screen_h = 360;
// SDL_Surface *screen;
// screen = SDL_SetVideoMode(screen_w, screen_h, 0, 0);
SDL_Window *screen;
screen = SDL_CreateWindow("RTS Receiver", SDL_WINDOWPOS_UNDEFINED,
SDL_WINDOWPOS_UNDEFINED, screen_w, screen_h,
SDL_WINDOW_RESIZABLE);
if (!screen) {
printf("SDL: could not set video mode - exiting:%s\n", SDL_GetError());
return -1;
}
// SDL_Overlay *bmp;
// bmp = SDL_CreateYUVOverlay(pCodecCtx->width, pCodecCtx->height,
// SDL_YV12_OVERLAY, screen);
sdlRenderer = SDL_CreateRenderer(screen, -1, SDL_RENDERER_ACCELERATED);
Uint32 pixformat = 0;
pixformat = SDL_PIXELFORMAT_NV12;
SDL_Texture *sdlTexture = nullptr;
sdlTexture = SDL_CreateTexture(sdlRenderer, pixformat,
SDL_TEXTUREACCESS_STREAMING, pixel_w, pixel_h);
SDL_Rect rect;
rect.x = 0;
rect.y = 0;
rect.w = screen_w;
rect.h = screen_h;
// SDL End------------------------
int ret, got_picture;
AVPacket *packet = (AVPacket *)av_malloc(sizeof(AVPacket));
#if OUTPUT_YUV420P
FILE *fp_yuv = fopen("output.yuv", "wb+");
#endif
struct SwsContext *img_convert_ctx;
img_convert_ctx = sws_getContext(
pCodecCtx->width, pCodecCtx->height, pCodecCtx->pix_fmt, pCodecCtx->width,
pCodecCtx->height, AV_PIX_FMT_YUV420P, SWS_BICUBIC, NULL, NULL, NULL);
//------------------------------
SDL_Thread *video_tid = SDL_CreateThread(sfp_refresh_thread, NULL, NULL);
//
// SDL_WM_SetCaption("Simplest FFmpeg Grab Desktop", NULL);
// Event Loop
SDL_Event event;
for (;;) {
// Wait
SDL_WaitEvent(&event);
if (event.type == SFM_REFRESH_EVENT) {
//------------------------------
if (av_read_frame(pFormatCtx, packet) >= 0) {
if (packet->stream_index == videoindex) {
avcodec_send_packet(pCodecCtx, packet);
got_picture = avcodec_receive_frame(pCodecCtx, pFrame);
// ret = avcodec_decode_video2(pCodecCtx, pFrame, &got_picture,
// packet);
if (ret < 0) {
printf("Decode Error.\n");
return -1;
}
if (got_picture) {
// SDL_LockYUVOverlay(bmp);
// pFrameYUV->data[0] = bmp->pixels[0];
// pFrameYUV->data[1] = bmp->pixels[2];
// pFrameYUV->data[2] = bmp->pixels[1];
// pFrameYUV->linesize[0] = bmp->pitches[0];
// pFrameYUV->linesize[1] = bmp->pitches[2];
// pFrameYUV->linesize[2] = bmp->pitches[1];
// sws_scale(img_convert_ctx,
// (const unsigned char *const *)pFrame->data,
// pFrame->linesize, 0, pCodecCtx->height,
// pFrameYUV->data, pFrameYUV->linesize);
// #if OUTPUT_YUV420P
// int y_size = pCodecCtx->width * pCodecCtx->height;
// fwrite(pFrameYUV->data[0], 1, y_size, fp_yuv); // Y
// fwrite(pFrameYUV->data[1], 1, y_size / 4, fp_yuv); //
// U fwrite(pFrameYUV->data[2], 1, y_size / 4, fp_yuv);
// // V
// #endif
// SDL_UnlockYUVOverlay(bmp);
// SDL_DisplayYUVOverlay(bmp, &rect);
// YUV420ToNV12FFmpeg(buffer, pixel_w, pixel_h, dst_buffer);
// SDL_UpdateTexture(sdlTexture, NULL, dst_buffer, pixel_w);
// // FIX: If window is resize
// sdlRect.x = 0;
// sdlRect.y = 0;
// sdlRect.w = screen_w;
// sdlRect.h = screen_h;
// SDL_RenderClear(sdlRenderer);
// SDL_RenderCopy(sdlRenderer, sdlTexture, NULL, &sdlRect);
// SDL_RenderPresent(sdlRenderer);
}
}
// av_free_packet(packet);
} else {
// Exit Thread
thread_exit = 1;
}
} else if (event.type == SDL_QUIT) {
thread_exit = 1;
} else if (event.type == SFM_BREAK_EVENT) {
break;
}
}
sws_freeContext(img_convert_ctx);
#if OUTPUT_YUV420P
fclose(fp_yuv);
#endif
SDL_Quit();
// av_free(out_buffer);
av_free(pFrameYUV);
avcodec_close(pCodecCtx);
avformat_close_input(&pFormatCtx);
return 0;
}

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xmake.lua Normal file
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set_project("remote_desk")
set_version("0.0.1")
set_license("GPL-3.0")
add_rules("mode.release", "mode.debug")
set_languages("c++17")
add_rules("mode.release", "mode.debug")
add_requires("spdlog 1.11.0", "ffmpeg", {system = false})
if is_os("windows") then
add_ldflags("/SUBSYSTEM:CONSOLE")
add_links("Shell32")
add_requires("vcpkg::sdl2 2.26.4")
elseif is_os("linux") then
add_links("pthread")
set_config("cxxflags", "-fPIC")
end
add_packages("spdlog")
includes("../../thirdparty")
target("log")
set_kind("headeronly")
add_packages("spdlog")
add_headerfiles("../../src/log/log.h")
add_includedirs("../../src/log", {public = true})
target("remote_desk")
set_kind("binary")
add_deps("projectx")
add_packages("log")
add_packages("vcpkg::sdl2", "ffmpeg")
add_links("avfilter", "avdevice", "avformat", "avcodec", "swscale", "swresample", "avutil")
add_files("*.cpp")
add_includedirs("../../src/interface")
add_links("SDL2main", "SDL2-static")