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* Imported Andy Ritger's GTF code in compute_display_timing.cpp, and mangled it

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into a usable function - this has some coding style issues I did not care to
  fix.
* _AddBaseMode() now computes the mode in case it is not present in the list
  yet.
* This should help with bug #7787.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@42420 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
Axel Dörfler 2011-07-13 23:26:26 +00:00
parent 95b98f42b4
commit 95009aeeb0
6 changed files with 452 additions and 25 deletions
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25
headers/private/graphics/common/compute_display_timing.h Normal file
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@ -0,0 +1,25 @@
/*
* Copyright 2011, Axel Dörfler, axeld@pinc-software.de.
* Distributed under the terms of the MIT License.
*/
#ifndef _COMPUTE_DISPLAY_TIMING_H
#define _COMPUTE_DISPLAY_TIMING_H
#include <Accelerant.h>
#include <GraphicsDefs.h>
#ifdef __cplusplus
extern "C" {
#endif
status_t compute_display_timing(uint32 width, uint32 height, float refresh,
bool interlaced, display_timing* timing);
#ifdef __cplusplus
}
#endif
#endif /* _COMPUTE_DISPLAY_TIMING_H */

2
headers/private/graphics/common/create_display_modes.h
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@ -23,6 +23,8 @@ area_id create_display_modes(const char* name, edid1_info* edid,
const color_space* spaces, uint32 spacesCount,
check_display_mode_hook hook, display_mode** _modes, uint32* _count);
void fill_display_mode(display_mode* mode);
#ifdef __cplusplus
}
#endif

1
src/add-ons/accelerants/common/Jamfile
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@ -7,6 +7,7 @@ UsePrivateHeaders [ FDirName graphics radeon ] ;
UsePrivateHeaders [ FDirName graphics common ] ;
StaticLibrary libaccelerantscommon.a :
compute_display_timing.cpp
create_display_modes.cpp
ddc.c
decode_edid.c

363
src/add-ons/accelerants/common/compute_display_timing.cpp Normal file
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@ -0,0 +1,363 @@
/*
* Copyright 2011, Axel Dörfler, axeld@pinc-software.de.
* Distributed under the terms of the MIT License.
*/
/* Generate mode timings using the GTF Timing Standard
*
* Copyright (c) 2001, Andy Ritger aritger@nvidia.com
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* o Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* o Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer
* in the documentation and/or other materials provided with the
* distribution.
* o Neither the name of NVIDIA nor the names of its contributors
* may be used to endorse or promote products derived from this
* software without specific prior written permission.
*
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT
* NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
* FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
* THE REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
*
*
* This program is based on the Generalized Timing Formula(GTF TM)
* Standard Version: 1.0, Revision: 1.0
*
* The GTF Document contains the following Copyright information:
*
* Copyright (c) 1994, 1995, 1996 - Video Electronics Standards
* Association. Duplication of this document within VESA member
* companies for review purposes is permitted. All other rights
* reserved.
*
* While every precaution has been taken in the preparation
* of this standard, the Video Electronics Standards Association and
* its contributors assume no responsibility for errors or omissions,
* and make no warranties, expressed or implied, of functionality
* of suitability for any purpose. The sample code contained within
* this standard may be used without restriction.
*
*
*
* The GTF EXCEL(TM) SPREADSHEET, a sample (and the definitive)
* implementation of the GTF Timing Standard, is available at:
*
* ftp://ftp.vesa.org/pub/GTF/GTF_V1R1.xls
*
*
*
* This program takes a desired resolution and vertical refresh rate,
* and computes mode timings according to the GTF Timing Standard.
* These mode timings can then be formatted as an XFree86 modeline
* or a mode description for use by fbset(8).
*
*
*
* NOTES:
*
* The GTF allows for computation of "margins" (the visible border
* surrounding the addressable video); on most non-overscan type
* systems, the margin period is zero. I've implemented the margin
* computations but not enabled it because 1) I don't really have
* any experience with this, and 2) neither XFree86 modelines nor
* fbset fb.modes provide an obvious way for margin timings to be
* included in their mode descriptions (needs more investigation).
*
* The GTF provides for computation of interlaced mode timings;
* I've implemented the computations but not enabled them, yet.
* I should probably enable and test this at some point.
*
*
*
* TODO:
*
* o Add support for interlaced modes.
*
* o Implement the other portions of the GTF: compute mode timings
* given either the desired pixel clock or the desired horizontal
* frequency.
*
* o It would be nice if this were more general purpose to do things
* outside the scope of the GTF: like generate double scan mode
* timings, for example.
*
* o Error checking.
*
*/
#include <compute_display_timing.h>
#include <math.h>
#include <stdarg.h>
//#define TRACE_COMPUTE
#ifdef TRACE_COMPUTE
# define TRACE(x, ...) debug_printf(x, __VA_ARGS__)
#else
# define TRACE(x, ...) ;
#endif
#define MARGIN_PERCENT 1.8 // % of active vertical image
#define CELL_GRAN 8.0 // assumed character cell granularity
#define MIN_PORCH 1 // minimum front porch
#define V_SYNC_RQD 3 // width of vsync in lines
#define H_SYNC_PERCENT 8.0 // width of hsync as % of total line
#define MIN_VSYNC_PLUS_BP 550.0 // min time of vsync + back porch (microsec)
#define M 600.0 // blanking formula gradient
#define C 40.0 // blanking formula offset
#define K 128.0 // blanking formula scaling factor
#define J 20.0 // blanking formula scaling factor
// C' and M' are part of the Blanking Duty Cycle computation
#define C_PRIME (((C - J) * K/256.0) + J)
#define M_PRIME (K/256.0 * M)
/*! As defined by the GTF Timing Standard, compute the Stage 1 Parameters
using the vertical refresh frequency. In other words: input a desired
resolution and desired refresh rate, and output the GTF mode timings.
*/
status_t
compute_display_timing(uint32 width, uint32 height, float refresh,
bool interlaced, display_timing* timing)
{
if (width < 320 || height < 200 || width > 65536 || height > 65536
|| refresh < 25 || refresh > 1000)
return B_BAD_VALUE;
int margins = 0;
float h_pixels_rnd;
float v_lines_rnd;
float v_field_rate_rqd;
float top_margin;
float bottom_margin;
float interlace;
float h_period_est;
float vsync_plus_bp;
float v_back_porch;
float total_v_lines;
float v_field_rate_est;
float h_period;
float v_field_rate;
float v_frame_rate;
float left_margin;
float right_margin;
float total_active_pixels;
float ideal_duty_cycle;
float h_blank;
float total_pixels;
float pixel_freq;
float h_freq;
float h_sync;
float h_front_porch;
float v_odd_front_porch_lines;
// 1. In order to give correct results, the number of horizontal
// pixels requested is first processed to ensure that it is divisible
// by the character size, by rounding it to the nearest character
// cell boundary:
// [H PIXELS RND] = ((ROUND([H PIXELS]/[CELL GRAN RND],0))*[CELLGRAN RND])
h_pixels_rnd = rint((float)width / CELL_GRAN) * CELL_GRAN;
TRACE("[H PIXELS RND] %g\n", h_pixels_rnd);
// 2. If interlace is requested, the number of vertical lines assumed
// by the calculation must be halved, as the computation calculates
// the number of vertical lines per field. In either case, the
// number of lines is rounded to the nearest integer.
// [V LINES RND] = IF([INT RQD?]="y", ROUND([V LINES]/2,0),
// ROUND([V LINES],0))
v_lines_rnd = interlaced
? (double)height / 2.0 : (double)height;
TRACE("[V LINES RND] %g\n", v_lines_rnd);
// 3. Find the frame rate required:
// [V FIELD RATE RQD] = IF([INT RQD?]="y", [I/P FREQ RQD]*2,
// [I/P FREQ RQD])
v_field_rate_rqd = interlaced ? refresh * 2.0 : refresh;
TRACE("[V FIELD RATE RQD] %g\n", v_field_rate_rqd);
// 4. Find number of lines in Top margin:
// [TOP MARGIN (LINES)] = IF([MARGINS RQD?]="Y",
// ROUND(([MARGIN%]/100*[V LINES RND]),0), 0)
top_margin = margins ? rint(MARGIN_PERCENT / 100.0 * v_lines_rnd) : 0.0;
TRACE("[TOP MARGIN (LINES)] %g\n", top_margin);
// 5. Find number of lines in Bottom margin:
// [BOT MARGIN (LINES)] = IF([MARGINS RQD?]="Y",
// ROUND(([MARGIN%]/100*[V LINES RND]),0), 0)
bottom_margin = margins ? rint(MARGIN_PERCENT/100.0 * v_lines_rnd) : 0.0;
TRACE("[BOT MARGIN (LINES)] %g\n", bottom_margin);
// 6. If interlace is required, then set variable [INTERLACE]=0.5:
// [INTERLACE]=(IF([INT RQD?]="y",0.5,0))
interlace = interlaced ? 0.5 : 0.0;
TRACE("[INTERLACE] %g\n", interlace);
// 7. Estimate the Horizontal period
// [H PERIOD EST] = ((1/[V FIELD RATE RQD]) - [MIN VSYNC+BP]/1000000)
// / ([V LINES RND] + (2*[TOP MARGIN (LINES)])
// + [MIN PORCH RND]+[INTERLACE]) * 1000000
h_period_est = (((1.0 / v_field_rate_rqd) - (MIN_VSYNC_PLUS_BP / 1000000.0))
/ (v_lines_rnd + (2 * top_margin) + MIN_PORCH + interlace) * 1000000.0);
TRACE("[H PERIOD EST] %g\n", h_period_est);
// 8. Find the number of lines in V sync + back porch:
// [V SYNC+BP] = ROUND(([MIN VSYNC+BP]/[H PERIOD EST]),0)
vsync_plus_bp = rint(MIN_VSYNC_PLUS_BP/h_period_est);
TRACE("[V SYNC+BP] %g\n", vsync_plus_bp);
// 9. Find the number of lines in V back porch alone:
// [V BACK PORCH] = [V SYNC+BP] - [V SYNC RND]
// XXX is "[V SYNC RND]" a typo? should be [V SYNC RQD]?
v_back_porch = vsync_plus_bp - V_SYNC_RQD;
TRACE("[V BACK PORCH] %g\n", v_back_porch);
// 10. Find the total number of lines in Vertical field period:
// [TOTAL V LINES] = [V LINES RND] + [TOP MARGIN (LINES)]
// + [BOT MARGIN (LINES)] + [V SYNC+BP] + [INTERLACE] + [MIN PORCH RND]
total_v_lines = v_lines_rnd + top_margin + bottom_margin + vsync_plus_bp +
interlace + MIN_PORCH;
TRACE("[TOTAL V LINES] %g\n", total_v_lines);
// 11. Estimate the Vertical field frequency:
// [V FIELD RATE EST] = 1 / [H PERIOD EST] / [TOTAL V LINES] * 1000000
v_field_rate_est = 1.0 / h_period_est / total_v_lines * 1000000.0;
TRACE("[V FIELD RATE EST] %g\n", v_field_rate_est);
// 12. Find the actual horizontal period:
// [H PERIOD] = [H PERIOD EST] / ([V FIELD RATE RQD] / [V FIELD RATE EST])
h_period = h_period_est / (v_field_rate_rqd / v_field_rate_est);
TRACE("[H PERIOD] %g\n", h_period);
// 13. Find the actual Vertical field frequency:
// [V FIELD RATE] = 1 / [H PERIOD] / [TOTAL V LINES] * 1000000
v_field_rate = 1.0 / h_period / total_v_lines * 1000000.0;
TRACE("[V FIELD RATE] %g\n", v_field_rate);
// 14. Find the Vertical frame frequency:
// [V FRAME RATE] = (IF([INT RQD?]="y", [V FIELD RATE]/2, [V FIELD RATE]))
v_frame_rate = interlaced ? v_field_rate / 2.0 : v_field_rate;
TRACE("[V FRAME RATE] %g\n", v_frame_rate);
// 15. Find number of pixels in left margin:
// [LEFT MARGIN (PIXELS)] = (IF( [MARGINS RQD?]="Y",
// (ROUND( ([H PIXELS RND] * [MARGIN%] / 100 /
// [CELL GRAN RND]),0)) * [CELL GRAN RND], 0))
left_margin = margins
? rint(h_pixels_rnd * MARGIN_PERCENT / 100.0 / CELL_GRAN) * CELL_GRAN
: 0.0;
TRACE("[LEFT MARGIN (PIXELS)] %g\n", left_margin);
// 16. Find number of pixels in right margin:
// [RIGHT MARGIN (PIXELS)] = (IF( [MARGINS RQD?]="Y",
// (ROUND( ([H PIXELS RND] * [MARGIN%] / 100 /
// [CELL GRAN RND]),0)) * [CELL GRAN RND], 0))
right_margin = margins
? rint(h_pixels_rnd * MARGIN_PERCENT / 100.0 / CELL_GRAN) * CELL_GRAN
: 0.0;
TRACE("[RIGHT MARGIN (PIXELS)] %g\n", right_margin);
// 17. Find total number of active pixels in image and left and right
// margins:
// [TOTAL ACTIVE PIXELS] = [H PIXELS RND] + [LEFT MARGIN (PIXELS)]
// + [RIGHT MARGIN (PIXELS)]
total_active_pixels = h_pixels_rnd + left_margin + right_margin;
TRACE("[TOTAL ACTIVE PIXELS] %g\n", total_active_pixels);
// 18. Find the ideal blanking duty cycle from the blanking duty cycle
// equation:
// [IDEAL DUTY CYCLE] = [C'] - ([M']*[H PERIOD]/1000)
ideal_duty_cycle = C_PRIME - (M_PRIME * h_period / 1000.0);
TRACE("[IDEAL DUTY CYCLE] %g\n", ideal_duty_cycle);
// 19. Find the number of pixels in the blanking time to the nearest
// double character cell:
// [H BLANK (PIXELS)] = (ROUND(([TOTAL ACTIVE PIXELS]
// * [IDEAL DUTY CYCLE] / (100-[IDEAL DUTY CYCLE])
// / (2*[CELL GRAN RND])), 0)) * (2*[CELL GRAN RND])
h_blank = rint(total_active_pixels * ideal_duty_cycle
/ (100.0 - ideal_duty_cycle) / (2.0 * CELL_GRAN)) * (2.0 * CELL_GRAN);
TRACE("[H BLANK (PIXELS)] %g\n", h_blank);
// 20. Find total number of pixels:
// [TOTAL PIXELS] = [TOTAL ACTIVE PIXELS] + [H BLANK (PIXELS)]
total_pixels = total_active_pixels + h_blank;
TRACE("[TOTAL PIXELS] %g\n", total_pixels);
// 21. Find pixel clock frequency:
// [PIXEL FREQ] = [TOTAL PIXELS] / [H PERIOD]
pixel_freq = total_pixels / h_period;
TRACE("[PIXEL FREQ] %g\n", pixel_freq);
// 22. Find horizontal frequency:
// [H FREQ] = 1000 / [H PERIOD]
h_freq = 1000.0 / h_period;
TRACE("[H FREQ] %g\n", h_freq);
// Stage 1 computations are now complete; I should really pass
// the results to another function and do the Stage 2
// computations, but I only need a few more values so I'll just
// append the computations here for now */
// 17. Find the number of pixels in the horizontal sync period:
// [H SYNC (PIXELS)] =(ROUND(([H SYNC%] / 100 * [TOTAL PIXELS]
// / [CELL GRAN RND]),0))*[CELL GRAN RND]
h_sync = rint(H_SYNC_PERCENT/100.0 * total_pixels / CELL_GRAN) * CELL_GRAN;
TRACE("[H SYNC (PIXELS)] %g\n", h_sync);
// 18. Find the number of pixels in the horizontal front porch period:
// [H FRONT PORCH (PIXELS)] = ([H BLANK (PIXELS)]/2)-[H SYNC (PIXELS)]
h_front_porch = (h_blank / 2.0) - h_sync;
TRACE("[H FRONT PORCH (PIXELS)] %g\n", h_front_porch);
// 36. Find the number of lines in the odd front porch period:
// [V ODD FRONT PORCH(LINES)]=([MIN PORCH RND]+[INTERLACE])
v_odd_front_porch_lines = MIN_PORCH + interlace;
TRACE("[V ODD FRONT PORCH(LINES)] %g\n", v_odd_front_porch_lines);
// finally, pack the results in the mode struct
timing->pixel_clock = uint32(pixel_freq * 1000);
timing->h_display = (uint16)h_pixels_rnd;
timing->h_sync_start = (uint16)(h_pixels_rnd + h_front_porch);
timing->h_sync_end = (uint16)(h_pixels_rnd + h_front_porch + h_sync);
timing->h_total = (uint16)total_pixels;
timing->v_display = (uint16)v_lines_rnd;
timing->v_sync_start = (uint16)(v_lines_rnd + v_odd_front_porch_lines);
timing->v_sync_end = (uint16)(v_lines_rnd + v_odd_front_porch_lines
+ V_SYNC_RQD);
timing->v_total = (uint16)total_v_lines;
timing->flags = B_POSITIVE_HSYNC | B_POSITIVE_VSYNC
| (interlace ? B_TIMING_INTERLACED : 0);
TRACE("GTF TIMING: %lu kHz, (%u, %u, %u, %u), (%u, %u, %u, %u)\n",
timing->pixel_clock, timing->h_display, timing->h_sync_start,
timing->h_sync_end, timing->h_total, timing->v_display,
timing->v_sync_start, timing->v_sync_end, timing->v_total);
return B_OK;
}

75
src/add-ons/accelerants/common/create_display_modes.cpp
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@ -1,5 +1,5 @@
/*
* Copyright 2007-2009, Axel Dörfler, axeld@pinc-software.de.
* Copyright 2007-2011, Axel Dörfler, axeld@pinc-software.de.
* Distributed under the terms of the MIT License.
*/
@ -10,6 +10,7 @@
#include <stdlib.h>
#include <string.h>
#include <compute_display_timing.h>
#include <video_overlay.h>
@ -80,29 +81,33 @@ namespace BPrivate {
class ModeList {
public:
ModeList();
~ModeList();
ModeList();
~ModeList();
bool AddModes(edid1_info* info);
bool AddModes(const display_mode* modes, uint32 count);
bool AddModes(edid1_info* info);
bool AddModes(const display_mode* modes,
uint32 count);
bool CreateColorSpaces(const color_space* spaces, uint32 count);
void Filter(check_display_mode_hook hook);
void Clean();
bool CreateColorSpaces(const color_space* spaces,
uint32 count);
void Filter(check_display_mode_hook hook);
void Clean();
const display_mode* Modes() const { return fModes; }
uint32 Count() const { return fCount; }
const display_mode* Modes() const { return fModes; }
uint32 Count() const { return fCount; }
private:
bool _MakeSpace(uint32 count);
bool _AddMode(const display_mode* mode);
void _RemoveModeAt(uint32 index);
void _AddBaseMode(uint16 width, uint16 height, uint32 refresh);
display_mode* _FindMode(uint16 width, uint16 height) const;
bool _MakeSpace(uint32 count);
bool _AddMode(const display_mode& mode);
void _RemoveModeAt(uint32 index);
void _AddBaseMode(uint16 width, uint16 height,
uint32 refresh);
display_mode* _FindMode(uint16 width, uint16 height) const;
display_mode* fModes;
uint32 fCount;
uint32 fCapacity;
private:
display_mode* fModes;
uint32 fCount;
uint32 fCapacity;
};
} // namespace BPrivate
@ -271,7 +276,7 @@ ModeList::AddModes(edid1_info* info)
mode.v_display_start = 0;
mode.flags = MODE_FLAGS;
_AddMode(&mode);
_AddMode(mode);
}
// Add other modes from the base list that satisfy the display's
@ -301,7 +306,7 @@ ModeList::AddModes(edid1_info* info)
continue;
}
_AddMode(&mode);
_AddMode(mode);
}
return true;
@ -370,6 +375,8 @@ ModeList::Clean()
void
ModeList::_AddBaseMode(uint16 width, uint16 height, uint32 refresh)
{
// Check the manually tweaked list first
for (uint32 i = 0; i < kNumBaseModes; i++) {
const display_mode& mode = kBaseModeList[i];
@ -381,9 +388,20 @@ ModeList::_AddBaseMode(uint16 width, uint16 height, uint32 refresh)
if (mode.timing.h_display == width && mode.timing.v_display == height
&& fabs(get_refresh_rate(mode) - refresh) < refresh * 0.012) {
_AddMode(&mode);
_AddMode(mode);
return;
}
}
// If that didn't have any entries, compute the entry
display_mode mode;
if (compute_display_timing(width, height, refresh, false, &mode.timing)
!= B_OK)
return;
fill_display_mode(&mode);
_AddMode(mode);
}
@ -420,12 +438,12 @@ ModeList::_MakeSpace(uint32 count)
bool
ModeList::_AddMode(const display_mode* mode)
ModeList::_AddMode(const display_mode& mode)
{
if (!_MakeSpace(1))
return false;
fModes[fCount++] = *mode;
fModes[fCount++] = mode;
return true;
}
@ -495,3 +513,14 @@ create_display_modes(const char* name, edid1_info* edid,
return area;
}
void
fill_display_mode(display_mode* mode)
{
mode->space = B_CMAP8;
mode->virtual_width = mode->timing.h_display;
mode->virtual_height = mode->timing.v_display;
mode->h_display_start = 0;
mode->v_display_start = 0;
mode->flags = MODE_FLAGS;
}

11
src/apps/aboutsystem/AboutSystem.cpp
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@ -1,5 +1,5 @@
/*
* Copyright (c) 2005-2010, Haiku, Inc.
* Copyright 2005-2011, Haiku, Inc.
* Distributed under the terms of the MIT license.
*
* Authors:
@ -1617,7 +1617,7 @@ AboutView::_CreateCreditsView()
.SetCopyright(B_TRANSLATE(COPYRIGHT_STRING
"1999-2010 by the authors of Gutenprint. All rights reserved."))
.SetLicense("GNU GPL v2")
.SetURL("http://gutenprint.sourceforge.net"));
.SetURL("http://gutenprint.sourceforge.net/"));
// libwebp
_AddPackageCredit(PackageCredit("libwebp")
@ -1626,6 +1626,13 @@ AboutView::_CreateCreditsView()
.SetLicense(B_TRANSLATE("BSD (3-clause)"))
.SetURL("http://www.webmproject.org/code/#libwebp_webp_image_library"));
// GTF
_AddPackageCredit(PackageCredit("GTF")
.SetCopyright(B_TRANSLATE("2001 by Andy Ritger based on the "
"Generalized Timing Formula"))
.SetLicense(B_TRANSLATE("BSD (3-clause)"))
.SetURL("http://gtf.sourceforge.net/"));
_AddCopyrightsFromAttribute();
_AddPackageCreditEntries();