/**************************************************************************
 *
 * Copyright 2013 Marek Olšák <maraeo@gmail.com>
 * All Rights Reserved.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the
 * "Software"), to deal in the Software without restriction, including
 * without limitation the rights to use, copy, modify, merge, publish,
 * distribute, sub license, and/or sell copies of the Software, and to
 * permit persons to whom the Software is furnished to do so, subject to
 * the following conditions:
 *
 * The above copyright notice and this permission notice (including the
 * next paragraph) shall be included in all copies or substantial portions
 * of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
 * IN NO EVENT SHALL THE AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR
 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 *
 **************************************************************************/

#ifndef HUD_PRIVATE_H
#define HUD_PRIVATE_H

#include "pipe/p_context.h"
#include "pipe/p_state.h"
#include "util/list.h"
#include "hud/font.h"
#include "cso_cache/cso_context.h"

enum hud_counter {
   HUD_COUNTER_OFFLOADED,
   HUD_COUNTER_DIRECT,
   HUD_COUNTER_SYNCS,
};

struct hud_context {
   int refcount;
   bool simple;

   /* Context where queries are executed. */
   struct pipe_context *record_pipe;

   /* Context where the HUD is drawn: */
   struct pipe_context *pipe;
   struct cso_context *cso;

   struct hud_batch_query_context *batch_query;
   struct list_head pane_list;

   struct util_queue_monitoring *monitored_queue;

   /* states */
   struct pipe_blend_state no_blend, alpha_blend;
   struct pipe_depth_stencil_alpha_state dsa;
   void *fs_color, *fs_text;
   struct pipe_rasterizer_state rasterizer, rasterizer_aa_lines;
   void *vs;
   struct cso_velems_state velems;

   /* font */
   struct util_font font;
   struct pipe_sampler_view *font_sampler_view;
   struct pipe_sampler_state font_sampler_state;

   /* VS constant buffer */
   struct {
      float color[4];
      float two_div_fb_width;
      float two_div_fb_height;
      float translate[2];
      float scale[2];
      float padding[2];
   } constants;
   struct pipe_constant_buffer constbuf;

   unsigned fb_width, fb_height;

   /* vertices for text and background drawing are accumulated here and then
    * drawn all at once */
   struct vertex_queue {
      float *vertices;
      struct pipe_vertex_buffer vbuf;
      unsigned max_num_vertices;
      unsigned num_vertices;
      unsigned buffer_size;
   } text, bg, whitelines;

   bool has_srgb;
};

struct hud_graph {
   /* initialized by common code */
   struct list_head head;
   struct hud_pane *pane;
   float color[3];
   float *vertices; /* ring buffer of vertices */

   /* name and query */
   char name[128];
   void *query_data;
   void (*begin_query)(struct hud_graph *gr, struct pipe_context *pipe);
   void (*query_new_value)(struct hud_graph *gr, struct pipe_context *pipe);
   /* use this instead of ordinary free() */
   void (*free_query_data)(void *ptr, struct pipe_context *pipe);

   /* mutable variables */
   unsigned num_vertices;
   unsigned index; /* vertex index being updated */
   double current_value;
   FILE *fd;
};

struct hud_pane {
   struct list_head head;
   struct hud_context *hud;
   unsigned x1, y1, x2, y2, y_simple;
   unsigned inner_x1;
   unsigned inner_y1;
   unsigned inner_x2;
   unsigned inner_y2;
   unsigned inner_width;
   unsigned inner_height;
   float yscale;
   unsigned max_num_vertices;
   unsigned last_line; /* index of the last describing line in the graph */
   uint64_t max_value;
   uint64_t initial_max_value;
   uint64_t ceiling;
   unsigned dyn_ceil_last_ran;
   boolean dyn_ceiling;
   boolean sort_items;
   enum pipe_driver_query_type type;
   uint64_t period; /* in microseconds */

   struct list_head graph_list;
   unsigned num_graphs;
   unsigned next_color;
};


/* core */
void hud_pane_add_graph(struct hud_pane *pane, struct hud_graph *gr);
void hud_pane_set_max_value(struct hud_pane *pane, uint64_t value);
void hud_graph_add_value(struct hud_graph *gr, double value);

/* graphs/queries */
struct hud_batch_query_context;

#define ALL_CPUS ~0 /* optionally set as cpu_index */

int hud_get_num_cpus(void);

void hud_fps_graph_install(struct hud_pane *pane);
void hud_frametime_graph_install(struct hud_pane *pane);
void hud_cpu_graph_install(struct hud_pane *pane, unsigned cpu_index);
void hud_thread_busy_install(struct hud_pane *pane, const char *name, bool main);
void hud_thread_counter_install(struct hud_pane *pane, const char *name,
                                enum hud_counter counter);
void hud_pipe_query_install(struct hud_batch_query_context **pbq,
                            struct hud_pane *pane,
                            const char *name,
                            enum pipe_query_type query_type,
                            unsigned result_index,
                            uint64_t max_value,
                            enum pipe_driver_query_type type,
                            enum pipe_driver_query_result_type result_type,
                            unsigned flags);
boolean hud_driver_query_install(struct hud_batch_query_context **pbq,
                                 struct hud_pane *pane,
                                 struct pipe_screen *screen, const char *name);
void hud_batch_query_begin(struct hud_batch_query_context *bq,
                           struct pipe_context *pipe);
void hud_batch_query_update(struct hud_batch_query_context *bq,
                            struct pipe_context *pipe);
void hud_batch_query_cleanup(struct hud_batch_query_context **pbq,
                             struct pipe_context *pipe);

#ifdef HAVE_GALLIUM_EXTRA_HUD
int hud_get_num_nics(bool displayhelp);
#define NIC_DIRECTION_RX 1
#define NIC_DIRECTION_TX 2
#define NIC_RSSI_DBM     3
void hud_nic_graph_install(struct hud_pane *pane, const char *nic_index,
                           unsigned int mode);

int hud_get_num_disks(bool displayhelp);
#define DISKSTAT_RD 1
#define DISKSTAT_WR 2
void hud_diskstat_graph_install(struct hud_pane *pane, const char *dev_name,
                                unsigned int mode);

int hud_get_num_cpufreq(bool displayhelp);
#define CPUFREQ_MINIMUM     1
#define CPUFREQ_CURRENT     2
#define CPUFREQ_MAXIMUM     3
void hud_cpufreq_graph_install(struct hud_pane *pane, int cpu_index, unsigned int mode);
#endif

#ifdef HAVE_LIBSENSORS
int hud_get_num_sensors(bool displayhelp);
#define SENSORS_TEMP_CURRENT     1
#define SENSORS_TEMP_CRITICAL    2
#define SENSORS_VOLTAGE_CURRENT  3
#define SENSORS_CURRENT_CURRENT  4
#define SENSORS_POWER_CURRENT    5
void hud_sensors_temp_graph_install(struct hud_pane *pane, const char *dev_name,
                                    unsigned int mode);
#endif

#endif
