1 /*****************************************************************************
2 * mac.c: Screen capture module for the Mac.
3 *****************************************************************************
4 * Copyright (C) 2004 the VideoLAN team
7 * Authors: Derk-Jan Hartman <hartman at videolan dot org>
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
22 *****************************************************************************/
24 /*****************************************************************************
26 *****************************************************************************/
31 #include <Carbon/Carbon.h>
32 #include <ApplicationServices/ApplicationServices.h>
34 typedef int CGSConnectionRef;
35 extern CGError CGSNewConnection(void* unknown, CGSConnectionRef* newConnection);
36 extern CGError CGSReleaseConnection(CGSConnectionRef connection);
42 RGBColor oldForeColor, oldBackColor;
44 CGDirectDisplayID displayID;
45 CGSConnectionRef gConnection;
48 PixMapHandle gDevicePix;
49 GWorldPtr LocalBufferGW;
50 PixMapHandle LocalBufferPix;
53 int screen_InitCapture( demux_t *p_demux )
55 demux_sys_t *p_sys = p_demux->p_sys;
56 screen_data_t *p_data;
57 int i_chroma, i_bbp, i_offset;
59 i_chroma = i_bbp = i_offset = 0;
61 p_sys->p_data = p_data =
62 (screen_data_t *)malloc( sizeof( screen_data_t ) );
64 p_data->gConnection = nil;
65 p_data->gMainDevice = NULL;
66 p_data->gDevicePix = NULL;
67 p_data->gDeviceState = nil;
68 p_data->LocalBufferGW = NULL;
69 p_data->LocalBufferPix = NULL;
71 p_data->displayID = CGMainDisplayID();
72 (void) GetMainDevice();
74 if( CGDisplaySamplesPerPixel(p_data->displayID) != 3 )
76 msg_Err( p_demux, "screenformat not supported" );
79 switch( CGDisplaySamplesPerPixel(p_data->displayID) * CGDisplayBitsPerSample(p_data->displayID) )
81 /* TODO figure out 256 colors (who uses it anyways) */
82 case 15: /* TODO this is not RV16, but BGR16 */
83 i_chroma = VLC_FOURCC('R','V','1','6');
89 i_chroma = VLC_FOURCC('R','V','3','2');
94 msg_Err( p_demux, "unknown screen depth: %d", (int)(CGDisplaySamplesPerPixel(p_data->displayID) * CGDisplayBitsPerSample(p_data->displayID)) );
98 GetBackColor(&p_data->oldBackColor);
99 GetPenState(&p_data->oldState);
100 ForeColor(blackColor);
101 BackColor(whiteColor);
103 p_data->gMainDevice = GetMainDevice();
104 p_data->gDeviceState = HGetState((Handle)p_data->gMainDevice);
105 HLock((Handle)p_data->gMainDevice);
106 p_data->gDevicePix = (**p_data->gMainDevice).gdPMap;
108 NewGWorld(&p_data->LocalBufferGW, (**p_data->gDevicePix).pixelSize, &(**p_data->gDevicePix).bounds, (**p_data->gDevicePix).pmTable, NULL, 0);
109 p_data->LocalBufferPix = GetGWorldPixMap(p_data->LocalBufferGW);
110 LockPixels(p_data->LocalBufferPix);
112 es_format_Init( &p_sys->fmt, VIDEO_ES, i_chroma );
113 p_sys->fmt.video.i_width = CGDisplayPixelsWide(p_data->displayID) + i_offset;
114 p_sys->fmt.video.i_visible_width = CGDisplayPixelsWide(p_data->displayID);
115 p_sys->fmt.video.i_height = CGDisplayPixelsHigh(p_data->displayID);
116 p_sys->fmt.video.i_bits_per_pixel = i_bbp;
118 GetForeColor(&p_data->oldForeColor);
120 HSetState( (Handle)p_data->gMainDevice, p_data->gDeviceState );
121 SetPenState( &p_data->oldState);
122 RGBForeColor( &p_data->oldForeColor );
123 RGBBackColor( &p_data->oldBackColor );
128 int screen_CloseCapture( demux_t *p_demux )
130 screen_data_t *p_data = (screen_data_t *)p_demux->p_sys->p_data;
132 if(p_data->LocalBufferPix) UnlockPixels(p_data->LocalBufferPix); p_data->LocalBufferPix = NULL;
133 if(p_data->LocalBufferGW) DisposeGWorld(p_data->LocalBufferGW); p_data->LocalBufferGW = NULL;
138 block_t *screen_Capture( demux_t *p_demux )
140 demux_sys_t *p_sys = p_demux->p_sys;
141 screen_data_t *p_data = (screen_data_t *)p_sys->p_data;
145 i_size = p_sys->fmt.video.i_height * p_sys->fmt.video.i_width * 32 / 8;
147 if( !( p_block = block_New( p_demux, i_size ) ) )
149 msg_Warn( p_demux, "cannot get block" );
153 GetForeColor(&p_data->oldForeColor);
154 GetBackColor(&p_data->oldBackColor);
155 GetPenState(&p_data->oldState);
156 ForeColor(blackColor);
157 BackColor(whiteColor);
159 assert(CGSNewConnection(NULL, &p_data->gConnection) == kCGErrorSuccess);
160 p_data->gMainDevice = GetMainDevice();
161 p_data->gDeviceState = HGetState((Handle)p_data->gMainDevice);
162 HLock((Handle)p_data->gMainDevice);
163 p_data->gDevicePix = (**p_data->gMainDevice).gdPMap;
165 CopyBits(( BitMap*)*p_data->gDevicePix, (BitMap*)*p_data->LocalBufferPix,
166 &(**p_data->gDevicePix).bounds, &(**p_data->gDevicePix).bounds,
169 HSetState( (Handle)p_data->gMainDevice, p_data->gDeviceState );
170 SetPenState( &p_data->oldState );
171 RGBForeColor( &p_data->oldForeColor );
172 RGBBackColor( &p_data->oldBackColor );
174 assert(CGSReleaseConnection(p_data->gConnection) == kCGErrorSuccess);
175 memcpy( p_block->p_buffer, (**p_data->LocalBufferPix).baseAddr, i_size );