/**
* Draws the next preview frame. If a new preview buffer is available then the
* preview texture is updated first.
*
* @param state RASPITEX STATE
* @param video_frame MMAL buffer header containing the opaque buffer handle.
* @return Zero if successful.
*/
static int raspitex_draw(RASPITEX_STATE *state, MMAL_BUFFER_HEADER_T *buf)
{
int rc = 0;
/* If buf is non-NULL then there is a new viewfinder frame available
* from the camera so the texture should be updated.
*
* Although it's possible to have multiple textures mapped to different
* viewfinder frames this can consume a lot of GPU memory for high-resolution
* viewfinders.
*/
if (buf)
{
/* Update the texture to the new viewfinder image which should */
if (state->ops.update_texture)
{
rc = state->ops.update_texture(state, (EGLClientBuffer) buf->data);
if (rc != 0)
{
vcos_log_error("%s: Failed to update RGBX texture %d",
VCOS_FUNCTION, rc);
goto end;
}
}
if (state->ops.update_y_texture)
{
rc = state->ops.update_y_texture(state, (EGLClientBuffer) buf->data);
if (rc != 0)
{
vcos_log_error("%s: Failed to update Y' plane texture %d", VCOS_FUNCTION, rc);
goto end;
}
}
if (state->ops.update_u_texture)
{
rc = state->ops.update_u_texture(state, (EGLClientBuffer) buf->data);
if (rc != 0)
{
vcos_log_error("%s: Failed to update U plane texture %d", VCOS_FUNCTION, rc);
goto end;
}
}
if (state->ops.update_v_texture)
{
rc = state->ops.update_v_texture(state, (EGLClientBuffer) buf->data);
if (rc != 0)
{
vcos_log_error("%s: Failed to update V texture %d", VCOS_FUNCTION, rc);
goto end;
}
}
/* Now return the PREVIOUS MMAL buffer header back to the camera preview. */
if (state->preview_buf)
mmal_buffer_header_release(state->preview_buf);
state->preview_buf = buf;
}
/* Do the drawing */
if (check_egl_image(state) == 0)
{
rc = state->ops.update_model(state);
if (rc != 0)
goto end;
rc = state->ops.redraw(state);
if (rc != 0)
goto end;
raspitex_do_capture(state);
eglSwapBuffers(state->display, state->surface);
update_fps();
}
else
{
// vcos_log_trace("%s: No preview image", VCOS_FUNCTION);
}
end:
return rc;
}
/**
* Draws the next preview frame. If a new preview buffer is available then the
* preview texture is updated first.
*
* @param state RASPITEX STATE
* @param video_frame MMAL buffer header containing the opaque buffer handle.
* @return Zero if successful.
*/
static int raspitex_draw(RASPITEX_STATE *state, MMAL_BUFFER_HEADER_T *buf)
{
int rc = 0;
/* If buf is non-NULL then there is a new viewfinder frame available
* from the camera so the texture should be updated.
*
* Although it's possible to have multiple textures mapped to different
* viewfinder frames this can consume a lot of GPU memory for high-resolution
* viewfinders.
*/
if (buf)
{
/* Update the texture to the new viewfinder image which should */
if (state->ops.update_texture)
{
//unsigned dwTick = GetTickCount( );
if (state->m_nSaveImageRequest == 1) // tweak for save images, but don't too often -> can have high load on CPU
{
//fprintf(stderr, "update_texture\n" );
rc = state->ops.update_texture(state, (EGLClientBuffer) buf->data);
if (rc != 0)
{
vcos_log_error("%s: Failed to update RGBX texture %d",
VCOS_FUNCTION, rc);
goto end;
}
if (state->m_nSaveImageRequest == 1)
{
state->m_nSaveImageRequest = 2; // say that I Have one image
}
else
{
state->m_nSaveImageRequest = 4; // say that I Have image for H264
}
}
}
if (state->ops.update_y_texture)
{
//fprintf(stderr, "update_y_texture\n" );
rc = state->ops.update_y_texture(state, (EGLClientBuffer) buf->data);
if (rc != 0)
{
vcos_log_error("%s: Failed to update Y' plane texture %d", VCOS_FUNCTION, rc);
goto end;
}
}
if (state->ops.update_u_texture)
{
//fprintf(stderr, "update_u_texture\n" );
rc = state->ops.update_u_texture(state, (EGLClientBuffer) buf->data);
if (rc != 0)
{
vcos_log_error("%s: Failed to update U plane texture %d", VCOS_FUNCTION, rc);
goto end;
}
}
if (state->ops.update_v_texture)
{
//fprintf(stderr, "update_v_texture\n" );
rc = state->ops.update_v_texture(state, (EGLClientBuffer) buf->data);
if (rc != 0)
{
vcos_log_error("%s: Failed to update V texture %d", VCOS_FUNCTION, rc);
goto end;
}
}
/* Now return the PREVIOUS MMAL buffer header back to the camera preview. */
/*if (state->preview_buf)
mmal_buffer_header_release(state->preview_buf);
state->preview_buf = buf;*/
}
//vcos_sleep( 10 );
/* Do the drawing */
if (check_egl_image(state) == 0)
{
rc = state->ops.update_model(state);
if (rc != 0)
goto end;
rc = state->ops.redraw(state);
if (rc != 0)
goto end;
//raspitex_do_capture(state);
//eglSwapBuffers(state->display, state->surface);
//update_fps();
}
else
{
// vcos_log_trace("%s: No preview image", VCOS_FUNCTION);
}
end:
return rc;
}
