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/sysdeps.h"
  23 #include <gst/vaapi/gstvaapidisplay_glx.h>
  24 #include <gst/vaapi/gstvaapiwindow_glx.h>
  25 #include <gst/vaapi/gstvaapisurface.h>
  26 #include <gst/vaapi/gstvaapiimage.h>
  27 #include <gst/vaapi/gstvaapitexture.h>
  28 #include "image.h"
  29
  30 static inline void pause(void)
  31 {
  32     g_print("Press any key to continue...\n");
  33     getchar();
  34 }
  35
  36 static inline guint gl_get_current_texture_2d(void)
  37 {
  38     GLint texture;
  39     glGetIntegerv(GL_TEXTURE_BINDING_2D, &texture);
  40     return (guint)texture;
  41 }
  42
  43 int
  44 main(int argc, char *argv[])
  45 {
  46     GstVaapiDisplay    *display;
  47     GstVaapiWindow     *window;
  48     GstVaapiWindowGLX  *glx_window;
  49     GstVaapiSurface    *surface;
  50     GstVaapiImage      *image;
  51     GstVaapiTexture    *textures[2];
  52     GstVaapiTexture    *texture;
  53     GLuint              texture_id;
  54     GstVaapiRectangle   src_rect;
  55     GstVaapiRectangle   dst_rect;
  56     guint               flags = GST_VAAPI_PICTURE_STRUCTURE_FRAME;
  57
  58     static const GstVaapiChromaType chroma_type = GST_VAAPI_CHROMA_TYPE_YUV420;
  59     static const guint              width       = 320;
  60     static const guint              height      = 240;
  61     static const guint              win_width   = 640;
  62     static const guint              win_height  = 480;
  63
  64     gst_init(&argc, &argv);
  65
  66     display = gst_vaapi_display_glx_new(NULL);
  67     if (!display)
  68         g_error("could not create VA display");
  69
  70     surface = gst_vaapi_surface_new(display, chroma_type, width, height);
  71     if (!surface)
  72         g_error("could not create VA surface");
  73
  74     image = image_generate(display, GST_VIDEO_FORMAT_NV12, width, height);
  75     if (!image)
  76         g_error("could not create VA image");
  77     if (!image_upload(image, surface))
  78         g_error("could not upload VA image to surface");
  79
  80     window = gst_vaapi_window_glx_new(display, win_width, win_height);
  81     if (!window)
  82         g_error("could not create window");
  83     glx_window = GST_VAAPI_WINDOW_GLX(window);
  84
  85     gst_vaapi_window_show(window);
  86
  87     if (!gst_vaapi_window_glx_make_current(glx_window))
  88         g_error("coult not bind GL context");
  89
  90     g_print("#\n");
  91     g_print("# Create texture with gst_vaapi_texture_new()\n");
  92     g_print("#\n");
  93     {
  94         texture = gst_vaapi_texture_new(
  95             display,
  96             GL_TEXTURE_2D,
  97             GL_RGBA,
  98             width,
  99             height
 100         );
 101         if (!texture)
 102             g_error("could not create VA texture");
 103
 104         textures[0] = texture;
 105         texture_id  = gst_vaapi_texture_get_id(texture);
 106
 107         if (!gst_vaapi_texture_put_surface(texture, surface, flags))
 108             g_error("could not transfer VA surface to texture");
 109
 110         if (!gst_vaapi_window_glx_put_texture(glx_window, texture, NULL, NULL))
 111             g_error("could not render texture into the window");
 112     }
 113
 114     g_print("#\n");
 115     g_print("# Create texture with gst_vaapi_texture_new_with_texture()\n");
 116     g_print("#\n");
 117     {
 118         const GLenum target = GL_TEXTURE_2D;
 119         const GLenum format = GL_BGRA;
 120
 121         glEnable(target);
 122         glGenTextures(1, &texture_id);
 123         glBindTexture(target, texture_id);
 124         glTexParameteri(target, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
 125         glTexParameteri(target, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
 126         glTexParameteri(target, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
 127         glTexParameteri(target, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
 128         glPixelStorei(GL_UNPACK_ALIGNMENT, 4);
 129         glTexImage2D(
 130             target,
 131             0,
 132             GL_RGBA8,
 133             width, height,
 134             0,
 135             format,
 136             GL_UNSIGNED_BYTE,
 137             NULL
 138         );
 139         glDisable(target);
 140
 141         texture = gst_vaapi_texture_new_with_texture(
 142             display,
 143             texture_id,
 144             target,
 145             format
 146         );
 147         if (!texture)
 148             g_error("could not create VA texture");
 149
 150         if (texture_id != gst_vaapi_texture_get_id(texture))
 151             g_error("invalid texture id");
 152
 153         if (gl_get_current_texture_2d() != texture_id)
 154             g_error("gst_vaapi_texture_new_with_texture() altered texture bindings");
 155
 156         textures[1] = texture;
 157
 158         if (!gst_vaapi_texture_put_surface(texture, surface, flags))
 159             g_error("could not transfer VA surface to texture");
 160
 161         if (gl_get_current_texture_2d() != texture_id)
 162             g_error("gst_vaapi_texture_put_surface() altered texture bindings");
 163
 164         src_rect.x      = 0;
 165         src_rect.y      = 0;
 166         src_rect.width  = width;
 167         src_rect.height = height;
 168
 169         dst_rect.x      = win_width/2;
 170         dst_rect.y      = win_height/2;
 171         dst_rect.width  = win_width/2;
 172         dst_rect.height = win_height/2;
 173
 174         if (!gst_vaapi_window_glx_put_texture(glx_window, texture,
 175                                               &src_rect, &dst_rect))
 176             g_error("could not render texture into the window");
 177
 178         if (gl_get_current_texture_2d() != texture_id)
 179             g_error("gst_vaapi_window_glx_put_texture() altered texture bindings");
 180     }
 181
 182     gst_vaapi_window_glx_swap_buffers(glx_window);
 183     pause();
 184
 185     gst_vaapi_texture_unref(textures[0]);
 186     gst_vaapi_texture_unref(textures[1]);
 187     glDeleteTextures(1, &texture_id);
 188
 189     gst_vaapi_window_unref(window);
 190     gst_vaapi_display_unref(display);
 191     gst_deinit();
 192     return 0;
 193 }