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	 455d3a7684
			
		
	
	455d3a7684
	
	
	
		
			
			Unused. Reviewed-by: Mark Thompson <sw@jkqxz.net> Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>
		
			
				
	
	
		
			248 lines
		
	
	
		
			10 KiB
		
	
	
	
		
			C
		
	
	
	
	
	
			
		
		
	
	
			248 lines
		
	
	
		
			10 KiB
		
	
	
	
		
			C
		
	
	
	
	
	
| /*
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|  * This file is part of FFmpeg.
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|  *
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|  * FFmpeg is free software; you can redistribute it and/or
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|  * modify it under the terms of the GNU Lesser General Public
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|  * License as published by the Free Software Foundation; either
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|  * version 2.1 of the License, or (at your option) any later version.
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|  *
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|  * FFmpeg is distributed in the hope that it will be useful,
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|  * but WITHOUT ANY WARRANTY; without even the implied warranty of
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|  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
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|  * Lesser General Public License for more details.
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|  *
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|  * You should have received a copy of the GNU Lesser General Public
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|  * License along with FFmpeg; if not, write to the Free Software
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|  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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|  */
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| 
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| #include "h265_profile_level.h"
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| 
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| 
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| static const H265LevelDescriptor h265_levels[] = {
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|     // Name             CpbFactor-Main    MaxSliceSegmentsPerPicture
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|     // |  level_idc            | CpbFactor-High           MaxLumaSr      BrFactor-High
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|     // |      |   MaxLumaPs    |       |      | MaxTileRows   |   BrFactor-Main | MinCr-Main
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|     // |      |      |         |       |      |   | MaxTileCols         |       |    |  MinCr-High
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|     { "1",    30,    36864,    350,      0,  16,  1,  1,     552960,    128,      0, 2, 2 },
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|     { "2",    60,   122880,   1500,      0,  16,  1,  1,    3686400,   1500,      0, 2, 2 },
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|     { "2.1",  63,   245760,   3000,      0,  20,  1,  1,    7372800,   3000,      0, 2, 2 },
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|     { "3",    90,   552960,   6000,      0,  30,  2,  2,   16588800,   6000,      0, 2, 2 },
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|     { "3.1",  93,   983040,  10000,      0,  40,  3,  3,   33177600,  10000,      0, 2, 2 },
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|     { "4",   120,  2228224,  12000,  30000,  75,  5,  5,   66846720,  12000,  30000, 4, 4 },
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|     { "4.1", 123,  2228224,  20000,  50000,  75,  5,  5,  133693440,  20000,  50000, 4, 4 },
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|     { "5",   150,  8912896,  25000, 100000, 200, 11, 10,  267386880,  25000, 100000, 6, 4 },
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|     { "5.1", 153,  8912896,  40000, 160000, 200, 11, 10,  534773760,  40000, 160000, 8, 4 },
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|     { "5.2", 156,  8912896,  60000, 240000, 200, 11, 10, 1069547520,  60000, 240000, 8, 4 },
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|     { "6",   180, 35651584,  60000, 240000, 600, 22, 20, 1069547520,  60000, 240000, 8, 4 },
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|     { "6.1", 183, 35651584, 120000, 480000, 600, 22, 20, 2139095040, 120000, 480000, 8, 4 },
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|     { "6.2", 186, 35651584, 240000, 800000, 600, 22, 20, 4278190080, 240000, 800000, 6, 4 },
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| };
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| 
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| static const H265ProfileDescriptor h265_profiles[] = {
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|     // profile_idc   8bit       one-picture
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|     //   HT-profile  | 422chroma    | lower-bit-rate
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|     //   |  14bit    |  | 420chroma |  | CpbVclFactor     MinCrScaleFactor
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|     //   |  |  12bit |  |  | monochrome|    | CpbNalFactor    | maxDpbPicBuf
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|     //   |  |  |  10bit |  |  | intra  |    |     | FormatCapabilityFactor
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|     { "Monochrome", //  |  |  |  |  |  |    |     |     |     |   |
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|       4, 0, 2, 1, 1, 1, 1, 1, 1, 0, 0, 1,  667,  733, 1.000, 1.0, 6 },
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|     { "Monochrome 10",
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|       4, 0, 2, 1, 1, 0, 1, 1, 1, 0, 0, 1,  833,  917, 1.250, 1.0, 6 },
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|     { "Monochrome 12",
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|       4, 0, 2, 1, 0, 0, 1, 1, 1, 0, 0, 1, 1000, 1100, 1.500, 1.0, 6 },
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|     { "Monochrome 16",
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|       4, 0, 2, 0, 0, 0, 1, 1, 1, 0, 0, 1, 1333, 1467, 2.000, 1.0, 6 },
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|     { "Main",
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|       1, 0, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1000, 1100, 1.500, 1.0, 6 },
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|     { "Screen-Extended Main",
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|       9, 0, 1, 1, 1, 1, 1, 1, 0, 0, 0, 1, 1000, 1100, 1.500, 1.0, 7 },
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|     { "Main 10",
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|       2, 0, 2, 2, 2, 2, 2, 2, 2, 2, 0, 2, 1000, 1100, 1.875, 1.0, 6 },
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|     { "Screen-Extended Main 10",
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|       9, 0, 1, 1, 1, 0, 1, 1, 0, 0, 0, 1, 1000, 1100, 1.875, 1.0, 7 },
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|     { "Main 12",
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|       4, 0, 2, 1, 0, 0, 1, 1, 0, 0, 0, 1, 1500, 1650, 2.250, 1.0, 6 },
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|     { "Main Still Picture",
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|       3, 0, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1000, 1100, 1.500, 1.0, 6 },
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|     { "Main 10 Still Picture",
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|       2, 0, 2, 2, 2, 2, 2, 2, 2, 2, 1, 2, 1000, 1100, 1.875, 1.0, 6 },
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|     { "Main 4:2:2 10",
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|       4, 0, 2, 1, 1, 0, 1, 0, 0, 0, 0, 1, 1667, 1833, 2.500, 0.5, 6 },
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|     { "Main 4:2:2 12",
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|       4, 0, 2, 1, 0, 0, 1, 0, 0, 0, 0, 1, 2000, 2200, 3.000, 0.5, 6 },
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|     { "Main 4:4:4",
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|       4, 0, 2, 1, 1, 1, 0, 0, 0, 0, 0, 1, 2000, 2200, 3.000, 0.5, 6 },
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|     { "High Throughput 4:4:4",
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|       5, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 1, 2000, 2200, 3.000, 0.5, 6 },
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|     { "Screen-Extended Main 4:4:4",
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|       9, 0, 1, 1, 1, 1, 0, 0, 0, 0, 0, 1, 2000, 2200, 3.000, 0.5, 7 },
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|     { "Screen-Extended High Throughput 4:4:4",
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|       9, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 1, 2000, 2200, 3.000, 0.5, 7 },
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|     { "Main 4:4:4 10",
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|       4, 0, 2, 1, 1, 0, 0, 0, 0, 0, 0, 1, 2500, 2750, 3.750, 0.5, 6 },
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|     { "High Throughput 4:4:4 10",
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|       5, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 1, 2500, 2750, 3.750, 0.5, 6 },
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|     { "Screen-Extended Main 4:4:4 10",
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|       9, 0, 1, 1, 1, 0, 0, 0, 0, 0, 0, 1, 2500, 2750, 3.750, 0.5, 7 },
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|     { "Screen-Extended High Throughput 4:4:4 10",
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|       9, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 1, 2500, 2750, 3.750, 0.5, 7 },
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|     { "Main 4:4:4 12",
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|       4, 0, 2, 1, 0, 0, 0, 0, 0, 0, 0, 1, 3000, 3300, 4.500, 0.5, 6 },
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|     { "High Throughput 4:4:4 14",
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|       5, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1, 3500, 3850, 5.250, 0.5, 6 },
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|     { "Screen-Extended High Throughput 4:4:4 14",
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|       9, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1, 3500, 3850, 5.250, 0.5, 7 },
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|     { "Main Intra",
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|       4, 0, 2, 1, 1, 1, 1, 1, 0, 1, 0, 2, 1000, 1100, 1.500, 1.0, 6 },
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|     { "Main 10 Intra",
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|       4, 0, 2, 1, 1, 0, 1, 1, 0, 1, 0, 2, 1000, 1100, 1.875, 1.0, 6 },
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|     { "Main 12 Intra",
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|       4, 0, 2, 1, 0, 0, 1, 1, 0, 1, 0, 2, 1500, 1650, 2.250, 1.0, 6 },
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|     { "Main 4:2:2 10 Intra",
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|       4, 0, 2, 1, 1, 0, 1, 0, 0, 1, 0, 2, 1667, 1833, 2.500, 0.5, 6 },
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|     { "Main 4:2:2 12 Intra",
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|       4, 0, 2, 1, 0, 0, 1, 0, 0, 1, 0, 2, 2000, 2200, 3.000, 0.5, 6 },
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|     { "Main 4:4:4 Intra",
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|       4, 0, 2, 1, 1, 1, 0, 0, 0, 1, 0, 2, 2000, 2200, 3.000, 0.5, 6 },
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|     { "Main 4:4:4 10 Intra",
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|       4, 0, 2, 1, 1, 0, 0, 0, 0, 1, 0, 2, 2500, 2750, 3.750, 0.5, 6 },
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|     { "Main 4:4:4 12 Intra",
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|       4, 0, 2, 1, 0, 0, 0, 0, 0, 1, 0, 2, 3000, 3300, 4.500, 0.5, 6 },
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|     { "Main 4:4:4 16 Intra",
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|       4, 0, 2, 0, 0, 0, 0, 0, 0, 1, 0, 2, 4000, 4400, 6.000, 0.5, 6 },
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|     { "Main 4:4:4 Still Picture",
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|       4, 0, 2, 1, 1, 1, 0, 0, 0, 1, 1, 2, 2000, 2200, 3.000, 0.5, 6 },
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|     { "Main 4:4:4 16 Still Picture",
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|       4, 0, 2, 0, 0, 0, 0, 0, 0, 1, 1, 2, 4000, 4400, 6.000, 0.5, 6 },
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|     { "High Throughput 4:4:4 16 Intra",
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|       5, 1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 2, 4000, 4400, 6.000, 0.5, 6 },
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| };
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| 
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| 
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| const H265ProfileDescriptor *ff_h265_get_profile(const H265RawProfileTierLevel *ptl)
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| {
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|     int i;
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| 
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|     if (ptl->general_profile_space)
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|         return NULL;
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| 
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|     for (i = 0; i < FF_ARRAY_ELEMS(h265_profiles); i++) {
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|         const H265ProfileDescriptor *profile = &h265_profiles[i];
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| 
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|         if (ptl->general_profile_idc &&
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|             ptl->general_profile_idc != profile->profile_idc)
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|             continue;
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|         if (!ptl->general_profile_compatibility_flag[profile->profile_idc])
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|             continue;
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| 
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| #define check_flag(name) \
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|         if (profile->name < 2) { \
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|             if (profile->name != ptl->general_ ## name ## _constraint_flag) \
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|                 continue; \
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|         }
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|         check_flag(max_14bit);
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|         check_flag(max_12bit);
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|         check_flag(max_10bit);
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|         check_flag(max_8bit);
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|         check_flag(max_422chroma);
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|         check_flag(max_420chroma);
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|         check_flag(max_monochrome);
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|         check_flag(intra);
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|         check_flag(one_picture_only);
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|         check_flag(lower_bit_rate);
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| #undef check_flag
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| 
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|         return profile;
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|     }
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| 
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|     return NULL;
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| }
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| 
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| const H265LevelDescriptor *ff_h265_guess_level(const H265RawProfileTierLevel *ptl,
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|                                                int64_t bitrate,
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|                                                int width, int height,
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|                                                int slice_segments,
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|                                                int tile_rows, int tile_cols,
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|                                                int max_dec_pic_buffering)
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| {
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|     const H265ProfileDescriptor *profile;
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|     int pic_size, tier_flag, lbr_flag, hbr_factor;
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|     int i;
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| 
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|     if (ptl)
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|         profile = ff_h265_get_profile(ptl);
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|     else
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|         profile = NULL;
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|     if (!profile) {
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|         // Default to using multiplication factors for Main profile.
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|         profile = &h265_profiles[4];
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|     }
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| 
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|     pic_size = width * height;
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| 
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|     if (ptl) {
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|         tier_flag = ptl->general_tier_flag;
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|         lbr_flag  = ptl->general_lower_bit_rate_constraint_flag;
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|     } else {
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|         tier_flag = 0;
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|         lbr_flag  = profile->lower_bit_rate > 0;
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|     }
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|     if (profile->profile_idc == 1 || profile->profile_idc == 2) {
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|         hbr_factor = 1;
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|     } else if (profile->high_throughput) {
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|         if (profile->intra)
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|             hbr_factor = 24 - 12 * lbr_flag;
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|         else
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|             hbr_factor = 6;
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|     } else {
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|         hbr_factor = 2 - lbr_flag;
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|     }
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| 
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|     for (i = 0; i < FF_ARRAY_ELEMS(h265_levels); i++) {
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|         const H265LevelDescriptor *level = &h265_levels[i];
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|         int max_br, max_dpb_size;
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| 
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|         if (tier_flag && !level->max_br_high)
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|             continue;
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| 
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|         if (pic_size > level->max_luma_ps)
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|             continue;
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|         if (width  * width  > 8 * level->max_luma_ps)
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|             continue;
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|         if (height * height > 8 * level->max_luma_ps)
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|             continue;
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| 
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|         if (slice_segments > level->max_slice_segments_per_picture)
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|             continue;
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|         if (tile_rows > level->max_tile_rows)
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|             continue;
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|         if (tile_cols > level->max_tile_cols)
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|             continue;
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| 
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|         if (tier_flag)
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|             max_br = level->max_br_high;
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|         else
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|             max_br = level->max_br_main;
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|         if (!max_br)
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|             continue;
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|         if (bitrate > (int64_t)profile->cpb_nal_factor * hbr_factor * max_br)
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|             continue;
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| 
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|         if (pic_size <= (level->max_luma_ps >> 2))
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|             max_dpb_size = FFMIN(4 * profile->max_dpb_pic_buf, 16);
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|         else if (pic_size <= (level->max_luma_ps >> 1))
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|             max_dpb_size = FFMIN(2 * profile->max_dpb_pic_buf, 16);
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|         else if (pic_size <= (3 * level->max_luma_ps >> 2))
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|             max_dpb_size = FFMIN(4 * profile->max_dpb_pic_buf / 3, 16);
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|         else
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|             max_dpb_size = profile->max_dpb_pic_buf;
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|         if (max_dec_pic_buffering > max_dpb_size)
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|             continue;
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| 
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|         return level;
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|     }
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| 
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|     return NULL;
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| }
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