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                                 glBindTexture(GL_TEXTURE_2D, userdata[i].tex_v210[field]);
  69                                 check_error();
  70                                 // Don't care about texture parameters, we're only going to read it
  71                                 // from the compute shader anyway.
  72                                 if (field == 0) {
  73                                         glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB10_A2, v210_width, height, 0, GL_RGBA, GL_UNSIGNED_INT_2_10_10_10_REV, NULL);
  74                                         check_error();
  75                                 }
  76
  77                                 glBindTexture(GL_TEXTURE_2D, userdata[i].tex_444[field]);
  78                                 check_error();
  79                                 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
  80                                 check_error();
  81                                 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
  82                                 check_error();
  83                                 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
  84                                 check_error();
  85                                 if (field == 0) {
  86                                         glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB10_A2, width, height, 0, GL_RGBA, GL_UNSIGNED_INT_2_10_10_10_REV, NULL);
  87                                         check_error();
  88                                 }
  89                         } else {
  90                                 glBindTexture(GL_TEXTURE_2D, userdata[i].tex_y[field]);
  91                                 check_error();
  92                                 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
  93                                 check_error();
  94                                 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
  95                                 check_error();
  96                                 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
  97                                 check_error();
  98                                 if (field == 0) {
  99                                         glTexImage2D(GL_TEXTURE_2D, 0, GL_R8, width, height, 0, GL_RED, GL_UNSIGNED_BYTE, NULL);
 100                                         check_error();
 101                                 }
 102
 103                                 glBindTexture(GL_TEXTURE_2D, userdata[i].tex_cbcr[field]);
 104                                 check_error();
 105                                 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
 106                                 check_error();
 107                                 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
 108                                 check_error();
 109                                 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
 110                                 check_error();
 111                                 if (field == 0) {
 112                                         glTexImage2D(GL_TEXTURE_2D, 0, GL_RG8, width / 2, height, 0, GL_RG, GL_UNSIGNED_BYTE, NULL);
 113                                         check_error();
 114                                 }
 115                         }
 116                 }
 117
 118                 freelist.push(frame);
 119         }
 120         glBindBuffer(buffer, 0);
 121         check_error();
 122         glBindTexture(GL_TEXTURE_2D, 0);
 123         check_error();
 124 }
 125
 126 PBOFrameAllocator::~PBOFrameAllocator()
 127 {
 128         while (!freelist.empty()) {
 129                 Frame frame = freelist.front();
 130                 freelist.pop();
 131                 GLuint pbo = ((Userdata *)frame.userdata)->pbo;
 132                 glBindBuffer(buffer, pbo);
 133                 check_error();
 134                 glUnmapBuffer(buffer);
 135                 check_error();
 136                 glBindBuffer(buffer, 0);
 137                 check_error();
 138                 glDeleteBuffers(1, &pbo);
 139                 check_error();
 140                 if (global_flags.ten_bit_input) {
 141                         glDeleteTextures(2, ((Userdata *)frame.userdata)->tex_v210);
 142                         check_error();
 143                         glDeleteTextures(2, ((Userdata *)frame.userdata)->tex_444);
 144                         check_error();
 145                 } else {
 146                         glDeleteTextures(2, ((Userdata *)frame.userdata)->tex_y);
 147                         check_error();
 148                         glDeleteTextures(2, ((Userdata *)frame.userdata)->tex_cbcr);
 149                         check_error();
 150                 }
 151         }
 152 }
 153 //static int sumsum = 0;
 154
 155 bmusb::FrameAllocator::Frame PBOFrameAllocator::alloc_frame()
 156 {
 157         Frame vf;
 158
 159         unique_lock<mutex> lock(freelist_mutex);  // Meh.
 160         if (freelist.empty()) {
 161                 printf("Frame overrun (no more spare PBO frames), dropping frame!\n");
 162         } else {
 163                 //fprintf(stderr, "freelist has %d allocated\n", ++sumsum);
 164                 vf = freelist.front();
 165                 freelist.pop();  // Meh.
 166         }
 167         vf.len = 0;
 168         vf.overflow = 0;
 169         return vf;
 170 }
 171
 172 void PBOFrameAllocator::release_frame(Frame frame)
 173 {
 174         if (frame.overflow > 0) {
 175                 printf("%d bytes overflow after last (PBO) frame\n", int(frame.overflow));
 176         }
 177
 178 #if 0
 179         // Poison the page. (Note that this might be bogus if you don't have an OpenGL context.)
 180         memset(frame.data, 0, frame.size);
 181         Userdata *userdata = (Userdata *)frame.userdata;
 182         for (unsigned field = 0; field < 2; ++field) {
 183                 glBindTexture(GL_TEXTURE_2D, userdata->tex_y[field]);
 184                 check_error();
 185                 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
 186                 check_error();
 187                 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
 188                 check_error();
 189                 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
 190                 check_error();
 191                 glTexImage2D(GL_TEXTURE_2D, 0, GL_R8, userdata->last_width[field], userdata->last_height[field], 0, GL_RED, GL_UNSIGNED_BYTE, NULL);
 192                 check_error();
 193
 194                 glBindTexture(GL_TEXTURE_2D, userdata->tex_cbcr[field]);
 195                 check_error();
 196                 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
 197                 check_error();
 198                 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
 199                 check_error();
 200                 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
 201                 check_error();
 202                 glTexImage2D(GL_TEXTURE_2D, 0, GL_RG8, userdata->last_width[field] / 2, userdata->last_height[field], 0, GL_RED, GL_UNSIGNED_BYTE, NULL);
 203                 check_error();
 204         }
 205 #endif
 206
 207         unique_lock<mutex> lock(freelist_mutex);
 208         freelist.push(frame);
 209         //--sumsum;
 210 }