/*****************************************************************************
* win32.c: Screen capture module.
*****************************************************************************
- * Copyright (C) 2004 VideoLAN
+ * Copyright (C) 2004 the VideoLAN team
* $Id$
*
* Authors: Gildas Bazin <gbazin@videolan.org>
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
*****************************************************************************/
/*****************************************************************************
* Preamble
*****************************************************************************/
-#include <stdlib.h>
#include <vlc/vlc.h>
-#include <vlc/input.h>
#include "screen.h"
+#ifndef CAPTUREBLT
+# define CAPTUREBLT (DWORD)0x40000000 /* Include layered windows */
+#endif
+
struct screen_data_t
{
HDC hdc_src;
HDC hdc_dst;
- HBITMAP hbmp;
+ BITMAPINFO bmi;
HGDIOBJ hgdi_backup;
- uint8_t *p_buffer;
+
+ int i_fragment_size;
+ int i_fragment;
+ block_t *p_block;
};
int screen_InitCapture( demux_t *p_demux )
demux_sys_t *p_sys = p_demux->p_sys;
screen_data_t *p_data;
int i_chroma, i_bits_per_pixel;
-
- BITMAPINFO bmi;
+ vlc_value_t val;
p_sys->p_data = p_data = malloc( sizeof( screen_data_t ) );
p_sys->fmt.video.i_bits_per_pixel = i_bits_per_pixel;
/* Create the bitmap info header */
- bmi.bmiHeader.biSize = sizeof(BITMAPINFOHEADER);
- bmi.bmiHeader.biWidth = p_sys->fmt.video.i_width;
- bmi.bmiHeader.biHeight = - p_sys->fmt.video.i_height;
- bmi.bmiHeader.biPlanes = 1;
- bmi.bmiHeader.biBitCount = p_sys->fmt.video.i_bits_per_pixel;
- bmi.bmiHeader.biCompression = BI_RGB;
- bmi.bmiHeader.biSizeImage = 0;
- bmi.bmiHeader.biXPelsPerMeter =
- bmi.bmiHeader.biYPelsPerMeter = 0;
- bmi.bmiHeader.biClrUsed = 0;
- bmi.bmiHeader.biClrImportant = 0;
-
- /* Create the bitmap storage space */
- p_data->hbmp = CreateDIBSection( p_data->hdc_dst, (BITMAPINFO *)&bmi,
- DIB_RGB_COLORS, (void **)&p_data->p_buffer, NULL, 0 );
- if( !p_data->hbmp || !p_data->p_buffer )
+ p_data->bmi.bmiHeader.biSize = sizeof(BITMAPINFOHEADER);
+ p_data->bmi.bmiHeader.biWidth = p_sys->fmt.video.i_width;
+ p_data->bmi.bmiHeader.biHeight = - p_sys->fmt.video.i_height;
+ p_data->bmi.bmiHeader.biPlanes = 1;
+ p_data->bmi.bmiHeader.biBitCount = p_sys->fmt.video.i_bits_per_pixel;
+ p_data->bmi.bmiHeader.biCompression = BI_RGB;
+ p_data->bmi.bmiHeader.biSizeImage = 0;
+ p_data->bmi.bmiHeader.biXPelsPerMeter =
+ p_data->bmi.bmiHeader.biYPelsPerMeter = 0;
+ p_data->bmi.bmiHeader.biClrUsed = 0;
+ p_data->bmi.bmiHeader.biClrImportant = 0;
+
+ if( i_chroma == VLC_FOURCC('R','V','2','4') )
{
- msg_Err( p_demux, "cannot create bitmap" );
- if( p_data->hbmp ) DeleteObject( p_data->hbmp );
- ReleaseDC( 0, p_data->hdc_src );
- DeleteDC( p_data->hdc_dst );
- return VLC_EGENERIC;
+ /* This is in BGR format */
+ p_sys->fmt.video.i_bmask = 0x00ff0000;
+ p_sys->fmt.video.i_gmask = 0x0000ff00;
+ p_sys->fmt.video.i_rmask = 0x000000ff;
}
- /* Select the bitmap into the compatible DC */
- p_data->hgdi_backup = SelectObject( p_data->hdc_dst, p_data->hbmp );
- if( !p_data->hgdi_backup )
- {
- msg_Err( p_demux, "cannot select bitmap" );
- }
+ var_Create( p_demux, "screen-fragment-size",
+ VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
+ var_Get( p_demux, "screen-fragment-size", &val );
+ p_data->i_fragment_size =
+ val.i_int > 0 ? val.i_int : p_sys->fmt.video.i_height;
+ p_data->i_fragment_size =
+ val.i_int > p_sys->fmt.video.i_height ? p_sys->fmt.video.i_height :
+ p_data->i_fragment_size;
+ p_sys->f_fps *= (p_sys->fmt.video.i_height/p_data->i_fragment_size);
+ p_sys->i_incr = 1000000 / p_sys->f_fps;
+ p_data->i_fragment = 0;
+ p_data->p_block = 0;
return VLC_SUCCESS;
}
demux_sys_t *p_sys = p_demux->p_sys;
screen_data_t *p_data = p_sys->p_data;
- SelectObject( p_data->hdc_dst, p_data->hgdi_backup );
- DeleteObject( p_data->hbmp );
+ if( p_data->p_block ) block_Release( p_data->p_block );
+
+ if( p_data->hgdi_backup)
+ SelectObject( p_data->hdc_dst, p_data->hgdi_backup );
+
DeleteDC( p_data->hdc_dst );
ReleaseDC( 0, p_data->hdc_src );
free( p_data );
return VLC_SUCCESS;
}
-block_t *screen_Capture( demux_t *p_demux )
+struct block_sys_t
+{
+ block_t self;
+ HBITMAP hbmp;
+};
+
+static void CaptureBlockRelease( block_t *p_block )
+{
+ DeleteObject( ((block_sys_t *)p_block)->hbmp );
+ free( p_block );
+}
+
+static block_t *CaptureBlockNew( demux_t *p_demux )
{
demux_sys_t *p_sys = p_demux->p_sys;
screen_data_t *p_data = p_sys->p_data;
- block_t *p_block;
- int i_size;
+ block_sys_t *p_block;
+ void *p_buffer;
+ int i_buffer;
+ HBITMAP hbmp;
- if( !BitBlt( p_data->hdc_dst, 0, 0,
- p_sys->fmt.video.i_width, p_sys->fmt.video.i_height,
- p_data->hdc_src, 0, 0, SRCCOPY ) )
+ /* Create the bitmap storage space */
+ hbmp = CreateDIBSection( p_data->hdc_dst, &p_data->bmi, DIB_RGB_COLORS,
+ &p_buffer, NULL, 0 );
+ if( !hbmp || !p_buffer )
{
- msg_Err( p_demux, "error during BitBlt()" );
+ msg_Err( p_demux, "cannot create bitmap" );
+ if( hbmp ) DeleteObject( hbmp );
return NULL;
}
- i_size = (p_sys->fmt.video.i_bits_per_pixel + 7) / 8 *
- p_sys->fmt.video.i_width * p_sys->fmt.video.i_height;
+ /* Select the bitmap into the compatible DC */
+ if( !p_data->hgdi_backup )
+ p_data->hgdi_backup = SelectObject( p_data->hdc_dst, hbmp );
+ else
+ SelectObject( p_data->hdc_dst, hbmp );
- if( !( p_block = block_New( p_demux, i_size ) ) )
+ if( !p_data->hgdi_backup )
{
- msg_Warn( p_demux, "cannot get block" );
- return 0;
+ msg_Err( p_demux, "cannot select bitmap" );
+ DeleteObject( hbmp );
+ return NULL;
}
- memcpy( p_block->p_buffer, p_data->p_buffer, i_size );
+ /* Build block */
+ if( !(p_block = malloc( sizeof( block_t ) + sizeof( block_sys_t ) )) )
+ {
+ DeleteObject( hbmp );
+ return NULL;
+ }
+ /* Fill all fields */
+ i_buffer = (p_sys->fmt.video.i_bits_per_pixel + 7) / 8 *
+ p_sys->fmt.video.i_width * p_sys->fmt.video.i_height;
+ block_Init( &p_block->self, p_buffer, i_buffer );
+ p_block->self.pf_release = CaptureBlockRelease;
+ p_block->hbmp = hbmp;
- return p_block;
+ return &p_block->self;
}
+block_t *screen_Capture( demux_t *p_demux )
+{
+ demux_sys_t *p_sys = p_demux->p_sys;
+ screen_data_t *p_data = p_sys->p_data;
+
+ if( !p_data->i_fragment )
+ {
+ if( !( p_data->p_block = CaptureBlockNew( p_demux ) ) )
+ {
+ msg_Warn( p_demux, "cannot get block" );
+ return 0;
+ }
+ }
+
+ if( !BitBlt( p_data->hdc_dst, 0, p_data->i_fragment *
+ p_data->i_fragment_size,
+ p_sys->fmt.video.i_width, p_data->i_fragment_size,
+ p_data->hdc_src, 0, p_data->i_fragment *
+ p_data->i_fragment_size,
+ IS_WINNT ? SRCCOPY | CAPTUREBLT : SRCCOPY ) )
+ {
+ msg_Err( p_demux, "error during BitBlt()" );
+ return NULL;
+ }
+
+ p_data->i_fragment++;
+
+ if( !( p_data->i_fragment %
+ (p_sys->fmt.video.i_height/p_data->i_fragment_size) ) )
+ {
+ block_t *p_block = p_data->p_block;
+ p_data->i_fragment = 0;
+ p_data->p_block = 0;
+ return p_block;
+ }
+
+ return NULL;
+}
projects / vlc / blobdiff