tests/test-textures.c

   1 /*
   2  *  test-textures.c - Test GstVaapiTexture
   3  *
   4  *  Copyright (C) 2010-2011 Splitted-Desktop Systems
   5  *
   6  *  This library is free software; you can redistribute it and/or
   7  *  modify it under the terms of the GNU Lesser General Public License
   8  *  as published by the Free Software Foundation; either version 2.1
   9  *  of the License, or (at your option) any later version.
  10  *
  11  *  This library 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 GNU
  14  *  Lesser General Public License for more details.
  15  *
  16  *  You should have received a copy of the GNU Lesser General Public
  17  *  License along with this library; if not, write to the Free
  18  *  Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  19  *  Boston, MA 02110-1301 USA
  20 */
  21
  22 #include <gst/vaapi/gstvaapidisplay_glx.h>
  23 #include <gst/vaapi/gstvaapiwindow_glx.h>
  24 #include <gst/vaapi/gstvaapisurface.h>
  25 #include <gst/vaapi/gstvaapiimage.h>
  26 #include <gst/vaapi/gstvaapitexture.h>
  27 #include "image.h"
  28
  29 static inline void pause(void)
  30 {
  31     g_print("Press any key to continue...\n");
  32     getchar();
  33 }
  34
  35 static inline guint gl_get_current_texture_2d(void)
  36 {
  37     GLint texture;
  38     glGetIntegerv(GL_TEXTURE_BINDING_2D, &texture);
  39     return (guint)texture;
  40 }
  41
  42 int
  43 main(int argc, char *argv[])
  44 {
  45     GstVaapiDisplay    *display;
  46     GstVaapiWindow     *window;
  47     GstVaapiWindowGLX  *glx_window;
  48     GstVaapiSurface    *surface;
  49     GstVaapiImage      *image;
  50     GstVaapiTexture    *textures[2];
  51     GstVaapiTexture    *texture;
  52     GLuint              texture_id;
  53     GstVaapiRectangle   src_rect;
  54     GstVaapiRectangle   dst_rect;
  55     guint               flags = GST_VAAPI_PICTURE_STRUCTURE_FRAME;
  56
  57     static const GstVaapiChromaType chroma_type = GST_VAAPI_CHROMA_TYPE_YUV420;
  58     static const guint              width       = 320;
  59     static const guint              height      = 240;
  60     static const guint              win_width   = 640;
  61     static const guint              win_height  = 480;
  62
  63     gst_init(&argc, &argv);
  64
  65     display = gst_vaapi_display_glx_new(NULL);
  66     if (!display)
  67         g_error("could not create VA display");
  68
  69     surface = gst_vaapi_surface_new(display, chroma_type, width, height);
  70     if (!surface)
  71         g_error("could not create VA surface");
  72
  73     image = image_generate(display, GST_VAAPI_IMAGE_NV12, width, height);
  74     if (!image)
  75         g_error("could not create VA image");
  76     if (!image_upload(image, surface))
  77         g_error("could not upload VA image to surface");
  78
  79     window = gst_vaapi_window_glx_new(display, win_width, win_height);
  80     if (!window)
  81         g_error("could not create window");
  82     glx_window = GST_VAAPI_WINDOW_GLX(window);
  83
  84     gst_vaapi_window_show(window);
  85
  86     if (!gst_vaapi_window_glx_make_current(glx_window))
  87         g_error("coult not bind GL context");
  88
  89     g_print("#\n");
  90     g_print("# Create texture with gst_vaapi_texture_new()\n");
  91     g_print("#\n");
  92     {
  93         texture = gst_vaapi_texture_new(
  94             display,
  95             GL_TEXTURE_2D,
  96             GL_RGBA,
  97             width,
  98             height
  99         );
 100         if (!texture)
 101             g_error("could not create VA texture");
 102
 103         textures[0] = texture;
 104         texture_id  = gst_vaapi_texture_get_id(texture);
 105
 106         if (!gst_vaapi_texture_put_surface(texture, surface, flags))
 107             g_error("could not transfer VA surface to texture");
 108
 109         if (!gst_vaapi_window_glx_put_texture(glx_window, texture, NULL, NULL))
 110             g_error("could not render texture into the window");
 111     }
 112
 113     g_print("#\n");
 114     g_print("# Create texture with gst_vaapi_texture_new_with_texture()\n");
 115     g_print("#\n");
 116     {
 117         const GLenum target = GL_TEXTURE_2D;
 118         const GLenum format = GL_BGRA;
 119
 120         glEnable(target);
 121         glGenTextures(1, &texture_id);
 122         glBindTexture(target, texture_id);
 123         glTexParameteri(target, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
 124         glTexParameteri(target, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
 125         glTexParameteri(target, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
 126         glTexParameteri(target, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
 127         glPixelStorei(GL_UNPACK_ALIGNMENT, 4);
 128         glTexImage2D(
 129             target,
 130             0,
 131             GL_RGBA8,
 132             width, height,
 133             0,
 134             format,
 135             GL_UNSIGNED_BYTE,
 136             NULL
 137         );
 138         glDisable(target);
 139
 140         texture = gst_vaapi_texture_new_with_texture(
 141             display,
 142             texture_id,
 143             target,
 144             format
 145         );
 146         if (!texture)
 147             g_error("could not create VA texture");
 148
 149         if (texture_id != gst_vaapi_texture_get_id(texture))
 150             g_error("invalid texture id");
 151
 152         if (gl_get_current_texture_2d() != texture_id)
 153             g_error("gst_vaapi_texture_new_with_texture() altered texture bindings");
 154
 155         textures[1] = texture;
 156
 157         if (!gst_vaapi_texture_put_surface(texture, surface, flags))
 158             g_error("could not transfer VA surface to texture");
 159
 160         if (gl_get_current_texture_2d() != texture_id)
 161             g_error("gst_vaapi_texture_put_surface() altered texture bindings");
 162
 163         src_rect.x      = 0;
 164         src_rect.y      = 0;
 165         src_rect.width  = width;
 166         src_rect.height = height;
 167
 168         dst_rect.x      = win_width/2;
 169         dst_rect.y      = win_height/2;
 170         dst_rect.width  = win_width/2;
 171         dst_rect.height = win_height/2;
 172
 173         if (!gst_vaapi_window_glx_put_texture(glx_window, texture,
 174                                               &src_rect, &dst_rect))
 175             g_error("could not render texture into the window");
 176
 177         if (gl_get_current_texture_2d() != texture_id)
 178             g_error("gst_vaapi_window_glx_put_texture() altered texture bindings");
 179     }
 180
 181     gst_vaapi_window_glx_swap_buffers(glx_window);
 182     pause();
 183
 184     g_object_unref(textures[0]);
 185     g_object_unref(textures[1]);
 186     glDeleteTextures(1, &texture_id);
 187
 188     g_object_unref(window);
 189     g_object_unref(display);
 190     gst_deinit();
 191     return 0;
 192 }