NvDrmRenderer.h

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/*
 * Copyright (c) 2016-2021, NVIDIA CORPORATION.  All rights reserved.
 * NVIDIA CORPORATION and its licensors retain all intellectual property
 * and proprietary rights in and to this software, related documentation
 * and any modifications thereto.  Any use, reproduction, disclosure or
 * distribution of this software and related documentation without an express
 * license agreement from NVIDIA CORPORATION is strictly prohibited.
 */
 
#ifndef __NV_DRM_RENDERER_H__
#define __NV_DRM_RENDERER_H__
 
#include "NvElement.h"
#include <stdint.h>
#include <pthread.h>
#include <queue>
#include <unordered_map>
 
typedef struct _NvDrmBO {
    uint32_t bo_handle;  
    int width;           
    int height;          
    int pitch;           
    uint8_t* data;       
} NvDrmBO;
 
typedef struct _NvDrmFB {
    uint32_t fb_id;  
    int width;       
    int height;      
    int format;      
    NvDrmBO bo[4];   
    int num_buffers; 
} NvDrmFB;
 
 
class NvDrmRenderer:public NvElement
{
public:
    static NvDrmRenderer *createDrmRenderer(const char *name, uint32_t width,
                                          uint32_t height, uint32_t w_x, uint32_t w_y,
                                          uint32_t connector, uint32_t crtc,
                                          struct drm_tegra_hdr_metadata_smpte_2086 metadata,
                                          bool streamHDR);
     ~NvDrmRenderer();
 
    int enqueBuffer(int fd);
 
    int dequeBuffer();
 
    int setFPS(float fps);
 
    bool enableUniversalPlanes(int enable);
 
    uint32_t createDumbFB(uint32_t width, uint32_t height, uint32_t drm_format, NvDrmFB *fb);
 
    int removeFB(uint32_t fb_id);
 
 
    int drmUtilCloseGemBo(int fd, uint32_t bo_handle);
 
    int setPlane(uint32_t pl_index,
                 uint32_t fb_id,
                 uint32_t crtc_x,
                 uint32_t crtc_y,
                 uint32_t crtc_w,
                 uint32_t crtc_h,
                 uint32_t src_x,
                 uint32_t src_y,
                 uint32_t src_w,
                 uint32_t src_h);
 
    int getPlaneCount();
 
    int getPlaneIndex(uint32_t crtc_index,
                      int32_t* plane_index);
 
    int getCrtcCount();
 
    int getEncoderCount();
 
    bool hdrSupported();
 
    int setHDRMetadataSmpte2086(struct drm_tegra_hdr_metadata_smpte_2086);
 
private:
 
    struct timespec last_render_time; 
    int drm_fd;                   
    int conn, crtc;
    uint32_t width, height;
    uint32_t drm_conn_id;         
    uint32_t drm_enc_id;          
    uint32_t drm_crtc_id;         
    uint32_t last_fb;
    int activeFd;
    int flippedFd;
    bool flipPending;
    bool renderingStarted;
    bool planeIsSet;
 
    uint32_t hdrBlobId;
    bool hdrBlobCreated;
 
    std::queue<int> freeBuffers;
    std::queue<int> pendingBuffers;
    std::unordered_map <int, int> map_list;
 
    bool stop_thread;   
    pthread_t render_thread;        
    pthread_mutex_t render_lock;     
    pthread_cond_t render_cond;      
    pthread_mutex_t enqueue_lock;    
    pthread_cond_t enqueue_cond;     
    pthread_mutex_t dequeue_lock;    
    pthread_cond_t dequeue_cond;     
    float fps;                      
    uint64_t render_time_sec;       
    uint64_t render_time_nsec;      
    NvDrmRenderer(const char *name, uint32_t width, uint32_t height,
                  uint32_t w_x, uint32_t w_y, uint32_t connector, uint32_t crtc,
                  struct drm_tegra_hdr_metadata_smpte_2086 metadata, bool streamHDR);
 
    static void * renderThread(void *arg);
 
    static void page_flip_handler(int fd, unsigned int frame,
                                  unsigned int sec, unsigned int usec, void *data);
 
    int renderInternal(int fd);
 
    /*
     *  Returns a DRM buffer_object handle.
     *
     * \param[in] w     Width of the window in pixels.
     * \param[in] h     Height of the window in pixels.
     * \param[in] bpp   Bits per pixel in the window.
     * \param[in] bo    A pointer to a buffer object handle.
     * \return  A DRM buffer_object handle allocated of size (w,h).
     */
    int createDumbBO(int w, int h, int bpp, NvDrmBO *bo);
 
    static const NvElementProfiler::ProfilerField valid_fields =
            NvElementProfiler::PROFILER_FIELD_TOTAL_UNITS |
            NvElementProfiler::PROFILER_FIELD_FPS |
            NvElementProfiler::PROFILER_FIELD_LATE_UNITS;
};
 
#endif