git.sesse.net Git - nageru/blob - pbo_frame_allocator.cpp

   1 #include "pbo_frame_allocator.h"
   2
   3 #include <bmusb/bmusb.h>
   4 #include <movit/util.h>
   5 #include <stdbool.h>
   6 #include <stdint.h>
   7 #include <stdio.h>
   8 #include <cstddef>
   9
  10 #include "flags.h"
  11 #include "v210_converter.h"
  12
  13 using namespace std;
  14
  15 PBOFrameAllocator::PBOFrameAllocator(size_t frame_size, GLuint width, GLuint height, size_t num_queued_frames, GLenum buffer, GLenum permissions, GLenum map_bits)
  16         : buffer(buffer)
  17 {
  18         userdata.reset(new Userdata[num_queued_frames]);
  19         for (size_t i = 0; i < num_queued_frames; ++i) {
  20                 GLuint pbo;
  21                 glGenBuffers(1, &pbo);
  22                 check_error();
  23                 glBindBuffer(buffer, pbo);
  24                 check_error();
  25                 glBufferStorage(buffer, frame_size, NULL, permissions | GL_MAP_PERSISTENT_BIT);
  26                 check_error();
  27
  28                 Frame frame;
  29                 frame.data = (uint8_t *)glMapBufferRange(buffer, 0, frame_size, permissions | map_bits | GL_MAP_PERSISTENT_BIT);
  30                 frame.data2 = frame.data + frame_size / 2;
  31                 check_error();
  32                 frame.size = frame_size;
  33                 frame.userdata = &userdata[i];
  34                 userdata[i].pbo = pbo;
  35                 frame.owner = this;
  36
  37                 // For 8-bit Y'CbCr, we ask the driver to split Y' and Cb/Cr
  38                 // into separate textures. For 10-bit, the input format (v210)
  39                 // is complicated enough that we need to interpolate up to 4:4:4,
  40                 // which we do in a compute shader ourselves.
  41                 frame.interleaved = !global_flags.ten_bit_input;
  42
  43                 // Create textures. We don't allocate any data for the second field at this point
  44                 // (just create the texture state with the samplers), since our default assumed
  45                 // resolution is progressive.
  46                 if (global_flags.ten_bit_input) {
  47                         glGenTextures(2, userdata[i].tex_v210);
  48                         check_error();
  49                         glGenTextures(2, userdata[i].tex_444);
  50                         check_error();
  51                 } else {
  52                         glGenTextures(2, userdata[i].tex_y);
  53                         check_error();
  54                         glGenTextures(2, userdata[i].tex_cbcr);
  55                         check_error();
  56                 }
  57                 userdata[i].last_width[0] = width;
  58                 userdata[i].last_height[0] = height;
  59                 userdata[i].last_width[1] = 0;
  60                 userdata[i].last_height[1] = 0;
  61                 userdata[i].last_interlaced = false;
  62                 userdata[i].last_has_signal = false;
  63                 userdata[i].last_is_connected = false;
  64                 for (unsigned field = 0; field < 2; ++field) {
  65                         if (global_flags.ten_bit_input) {
  66                                 const size_t v210_width = v210Converter::get_minimum_v210_texture_width(width);
  67
  68                                 // Seemingly we need to set the minification filter even though
  69                                 // shader image loads don't use them, or NVIDIA will just give us
  70                                 // zero back.
  71                                 glBindTexture(GL_TEXTURE_2D, userdata[i].tex_v210[field]);
  72                                 check_error();
  73                                 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
  74                                 check_error();
  75                                 if (field == 0) {
  76                                         glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB10_A2, v210_width, height, 0, GL_RGBA, GL_UNSIGNED_INT_2_10_10_10_REV, NULL);
  77                                         check_error();
  78                                 }
  79
  80                                 glBindTexture(GL_TEXTURE_2D, userdata[i].tex_444[field]);
  81                                 check_error();
  82                                 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
  83                                 check_error();
  84                                 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
  85                                 check_error();
  86                                 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
  87                                 check_error();
  88                                 if (field == 0) {
  89                                         glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB10_A2, width, height, 0, GL_RGBA, GL_UNSIGNED_INT_2_10_10_10_REV, NULL);
  90                                         check_error();
  91                                 }
  92                         } else {
  93                                 glBindTexture(GL_TEXTURE_2D, userdata[i].tex_y[field]);
  94                                 check_error();
  95                                 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
  96                                 check_error();
  97                                 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
  98                                 check_error();
  99                                 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
 100                                 check_error();
 101                                 if (field == 0) {
 102                                         glTexImage2D(GL_TEXTURE_2D, 0, GL_R8, width, height, 0, GL_RED, GL_UNSIGNED_BYTE, NULL);
 103                                         check_error();
 104                                 }
 105
 106                                 glBindTexture(GL_TEXTURE_2D, userdata[i].tex_cbcr[field]);
 107                                 check_error();
 108                                 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
 109                                 check_error();
 110                                 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
 111                                 check_error();
 112                                 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
 113                                 check_error();
 114                                 if (field == 0) {
 115                                         glTexImage2D(GL_TEXTURE_2D, 0, GL_RG8, width / 2, height, 0, GL_RG, GL_UNSIGNED_BYTE, NULL);
 116                                         check_error();
 117                                 }
 118                         }
 119                 }
 120
 121                 freelist.push(frame);
 122         }
 123         glBindBuffer(buffer, 0);
 124         check_error();
 125         glBindTexture(GL_TEXTURE_2D, 0);
 126         check_error();
 127 }
 128
 129 PBOFrameAllocator::~PBOFrameAllocator()
 130 {
 131         while (!freelist.empty()) {
 132                 Frame frame = freelist.front();
 133                 freelist.pop();
 134                 GLuint pbo = ((Userdata *)frame.userdata)->pbo;
 135                 glBindBuffer(buffer, pbo);
 136                 check_error();
 137                 glUnmapBuffer(buffer);
 138                 check_error();
 139                 glBindBuffer(buffer, 0);
 140                 check_error();
 141                 glDeleteBuffers(1, &pbo);
 142                 check_error();
 143                 if (global_flags.ten_bit_input) {
 144                         glDeleteTextures(2, ((Userdata *)frame.userdata)->tex_v210);
 145                         check_error();
 146                         glDeleteTextures(2, ((Userdata *)frame.userdata)->tex_444);
 147                         check_error();
 148                 } else {
 149                         glDeleteTextures(2, ((Userdata *)frame.userdata)->tex_y);
 150                         check_error();
 151                         glDeleteTextures(2, ((Userdata *)frame.userdata)->tex_cbcr);
 152                         check_error();
 153                 }
 154         }
 155 }
 156 //static int sumsum = 0;
 157
 158 bmusb::FrameAllocator::Frame PBOFrameAllocator::alloc_frame()
 159 {
 160         Frame vf;
 161
 162         unique_lock<mutex> lock(freelist_mutex);  // Meh.
 163         if (freelist.empty()) {
 164                 printf("Frame overrun (no more spare PBO frames), dropping frame!\n");
 165         } else {
 166                 //fprintf(stderr, "freelist has %d allocated\n", ++sumsum);
 167                 vf = freelist.front();
 168                 freelist.pop();  // Meh.
 169         }
 170         vf.len = 0;
 171         vf.overflow = 0;
 172         return vf;
 173 }
 174
 175 void PBOFrameAllocator::release_frame(Frame frame)
 176 {
 177         if (frame.overflow > 0) {
 178                 printf("%d bytes overflow after last (PBO) frame\n", int(frame.overflow));
 179         }
 180
 181 #if 0
 182         // Poison the page. (Note that this might be bogus if you don't have an OpenGL context.)
 183         memset(frame.data, 0, frame.size);
 184         Userdata *userdata = (Userdata *)frame.userdata;
 185         for (unsigned field = 0; field < 2; ++field) {
 186                 glBindTexture(GL_TEXTURE_2D, userdata->tex_y[field]);
 187                 check_error();
 188                 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
 189                 check_error();
 190                 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
 191                 check_error();
 192                 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
 193                 check_error();
 194                 glTexImage2D(GL_TEXTURE_2D, 0, GL_R8, userdata->last_width[field], userdata->last_height[field], 0, GL_RED, GL_UNSIGNED_BYTE, NULL);
 195                 check_error();
 196
 197                 glBindTexture(GL_TEXTURE_2D, userdata->tex_cbcr[field]);
 198                 check_error();
 199                 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
 200                 check_error();
 201                 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
 202                 check_error();
 203                 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
 204                 check_error();
 205                 glTexImage2D(GL_TEXTURE_2D, 0, GL_RG8, userdata->last_width[field] / 2, userdata->last_height[field], 0, GL_RED, GL_UNSIGNED_BYTE, NULL);
 206                 check_error();
 207         }
 208 #endif
 209
 210         unique_lock<mutex> lock(freelist_mutex);
 211         freelist.push(frame);
 212         //--sumsum;
 213 }