tests/test-textures.c

   1 /*
   2  *  test-textures.c - Test GstVaapiTexture
   3  *
   4  *  gstreamer-vaapi (C) 2010 Splitted-Desktop Systems
   5  *
   6  *  This program is free software; you can redistribute it and/or modify
   7  *  it under the terms of the GNU General Public License as published by
   8  *  the Free Software Foundation; either version 2 of the License, or
   9  *  (at your option) any later version.
  10  *
  11  *  This program is distributed in the hope that it will be useful,
  12  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  *  GNU General Public License for more details.
  15  *
  16  *  You should have received a copy of the GNU General Public License
  17  *  along with this program; if not, write to the Free Software
  18  *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA
  19  */
  20
  21 #include <gst/vaapi/gstvaapidisplay_glx.h>
  22 #include <gst/vaapi/gstvaapiwindow_glx.h>
  23 #include <gst/vaapi/gstvaapisurface.h>
  24 #include <gst/vaapi/gstvaapiimage.h>
  25 #include <gst/vaapi/gstvaapitexture.h>
  26 #include "image.h"
  27
  28 static inline void pause(void)
  29 {
  30     g_print("Press any key to continue...\n");
  31     getchar();
  32 }
  33
  34 static inline guint gl_get_current_texture_2d(void)
  35 {
  36     GLint texture;
  37     glGetIntegerv(GL_TEXTURE_BINDING_2D, &texture);
  38     return (guint)texture;
  39 }
  40
  41 int
  42 main(int argc, char *argv[])
  43 {
  44     GstVaapiDisplay    *display;
  45     GstVaapiWindow     *window;
  46     GstVaapiWindowGLX  *glx_window;
  47     GstVaapiSurface    *surface;
  48     GstVaapiImage      *image;
  49     GstVaapiTexture    *textures[2];
  50     GstVaapiTexture    *texture;
  51     GLuint              texture_id;
  52     GstVaapiRectangle   src_rect;
  53     GstVaapiRectangle   dst_rect;
  54     guint               flags = GST_VAAPI_PICTURE_STRUCTURE_FRAME;
  55
  56     static const GstVaapiChromaType chroma_type = GST_VAAPI_CHROMA_TYPE_YUV420;
  57     static const guint              width       = 320;
  58     static const guint              height      = 240;
  59     static const guint              win_width   = 640;
  60     static const guint              win_height  = 480;
  61
  62     gst_init(&argc, &argv);
  63
  64     display = gst_vaapi_display_glx_new(NULL);
  65     if (!display)
  66         g_error("could not create VA display");
  67
  68     surface = gst_vaapi_surface_new(display, chroma_type, width, height);
  69     if (!surface)
  70         g_error("could not create VA surface");
  71
  72     image = image_generate(display, GST_VAAPI_IMAGE_NV12, width, height);
  73     if (!image)
  74         g_error("could not create VA image");
  75     if (!image_upload(image, surface))
  76         g_error("could not upload VA image to surface");
  77
  78     window = gst_vaapi_window_glx_new(display, win_width, win_height);
  79     if (!window)
  80         g_error("could not create window");
  81     glx_window = GST_VAAPI_WINDOW_GLX(window);
  82
  83     gst_vaapi_window_show(window);
  84
  85     if (!gst_vaapi_window_glx_make_current(glx_window))
  86         g_error("coult not bind GL context");
  87
  88     g_print("#\n");
  89     g_print("# Create texture with gst_vaapi_texture_new()\n");
  90     g_print("#\n");
  91     {
  92         texture = gst_vaapi_texture_new(
  93             display,
  94             GL_TEXTURE_2D,
  95             GL_RGBA,
  96             width,
  97             height
  98         );
  99         if (!texture)
 100             g_error("could not create VA texture");
 101
 102         textures[0] = texture;
 103         texture_id  = gst_vaapi_texture_get_id(texture);
 104
 105         if (!gst_vaapi_texture_put_surface(texture, surface, flags))
 106             g_error("could not transfer VA surface to texture");
 107
 108         if (!gst_vaapi_window_glx_put_texture(glx_window, texture, NULL, NULL))
 109             g_error("could not render texture into the window");
 110     }
 111
 112     g_print("#\n");
 113     g_print("# Create texture with gst_vaapi_texture_new_with_texture()\n");
 114     g_print("#\n");
 115     {
 116         const GLenum target = GL_TEXTURE_2D;
 117         const GLenum format = GL_BGRA;
 118
 119         glEnable(target);
 120         glGenTextures(1, &texture_id);
 121         glBindTexture(target, texture_id);
 122         glTexParameteri(target, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
 123         glTexParameteri(target, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
 124         glTexParameteri(target, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
 125         glTexParameteri(target, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
 126         glPixelStorei(GL_UNPACK_ALIGNMENT, 4);
 127         glTexImage2D(
 128             target,
 129             0,
 130             GL_RGBA8,
 131             width, height,
 132             0,
 133             format,
 134             GL_UNSIGNED_BYTE,
 135             NULL
 136         );
 137         glDisable(target);
 138
 139         texture = gst_vaapi_texture_new_with_texture(
 140             display,
 141             texture_id,
 142             target,
 143             format
 144         );
 145         if (!texture)
 146             g_error("could not create VA texture");
 147
 148         if (texture_id != gst_vaapi_texture_get_id(texture))
 149             g_error("invalid texture id");
 150
 151         if (gl_get_current_texture_2d() != texture_id)
 152             g_error("gst_vaapi_texture_new_with_texture() altered texture bindings");
 153
 154         textures[1] = texture;
 155
 156         if (!gst_vaapi_texture_put_surface(texture, surface, flags))
 157             g_error("could not transfer VA surface to texture");
 158
 159         if (gl_get_current_texture_2d() != texture_id)
 160             g_error("gst_vaapi_texture_put_surface() altered texture bindings");
 161
 162         src_rect.x      = 0;
 163         src_rect.y      = 0;
 164         src_rect.width  = width;
 165         src_rect.height = height;
 166
 167         dst_rect.x      = win_width/2;
 168         dst_rect.y      = win_height/2;
 169         dst_rect.width  = win_width/2;
 170         dst_rect.height = win_height/2;
 171
 172         if (!gst_vaapi_window_glx_put_texture(glx_window, texture,
 173                                               &src_rect, &dst_rect))
 174             g_error("could not render texture into the window");
 175
 176         if (gl_get_current_texture_2d() != texture_id)
 177             g_error("gst_vaapi_window_glx_put_texture() altered texture bindings");
 178     }
 179
 180     gst_vaapi_window_glx_swap_buffers(glx_window);
 181     pause();
 182
 183     g_object_unref(textures[0]);
 184     g_object_unref(textures[1]);
 185     glDeleteTextures(1, &texture_id);
 186
 187     g_object_unref(window);
 188     g_object_unref(display);
 189     gst_deinit();
 190     return 0;
 191 }