496 lines
21 KiB
C++
496 lines
21 KiB
C++
/*****************************************************************************
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* Copyright (C) 2013 x265 project
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*
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* Authors: Steve Borho <steve@borho.org>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program 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
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02111, USA.
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*
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* This program is also available under a commercial proprietary license.
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* For more information, contact us at license @ x265.com.
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*****************************************************************************/
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#include "common.h"
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#include "slice.h"
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#include "level.h"
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namespace X265_NS {
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typedef struct
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{
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uint32_t maxLumaSamples;
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uint32_t maxLumaSamplesPerSecond;
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uint32_t maxBitrateMain;
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uint32_t maxBitrateHigh;
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uint32_t maxCpbSizeMain;
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uint32_t maxCpbSizeHigh;
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uint32_t minCompressionRatio;
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Level::Name levelEnum;
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const char* name;
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int levelIdc;
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} LevelSpec;
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LevelSpec levels[] =
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{
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{ 36864, 552960, 128, MAX_UINT, 350, MAX_UINT, 2, Level::LEVEL1, "1", 10 },
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{ 122880, 3686400, 1500, MAX_UINT, 1500, MAX_UINT, 2, Level::LEVEL2, "2", 20 },
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{ 245760, 7372800, 3000, MAX_UINT, 3000, MAX_UINT, 2, Level::LEVEL2_1, "2.1", 21 },
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{ 552960, 16588800, 6000, MAX_UINT, 6000, MAX_UINT, 2, Level::LEVEL3, "3", 30 },
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{ 983040, 33177600, 10000, MAX_UINT, 10000, MAX_UINT, 2, Level::LEVEL3_1, "3.1", 31 },
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{ 2228224, 66846720, 12000, 30000, 12000, 30000, 4, Level::LEVEL4, "4", 40 },
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{ 2228224, 133693440, 20000, 50000, 20000, 50000, 4, Level::LEVEL4_1, "4.1", 41 },
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{ 8912896, 267386880, 25000, 100000, 25000, 100000, 6, Level::LEVEL5, "5", 50 },
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{ 8912896, 534773760, 40000, 160000, 40000, 160000, 8, Level::LEVEL5_1, "5.1", 51 },
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{ 8912896, 1069547520, 60000, 240000, 60000, 240000, 8, Level::LEVEL5_2, "5.2", 52 },
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{ 35651584, 1069547520, 60000, 240000, 60000, 240000, 8, Level::LEVEL6, "6", 60 },
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{ 35651584, 2139095040, 120000, 480000, 120000, 480000, 8, Level::LEVEL6_1, "6.1", 61 },
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{ 35651584, 4278190080U, 240000, 800000, 240000, 800000, 6, Level::LEVEL6_2, "6.2", 62 },
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{ MAX_UINT, MAX_UINT, MAX_UINT, MAX_UINT, MAX_UINT, MAX_UINT, 1, Level::LEVEL8_5, "8.5", 85 },
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};
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/* determine minimum decoder level required to decode the described video */
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void determineLevel(const x265_param ¶m, VPS& vps)
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{
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vps.ptl.onePictureOnlyConstraintFlag = param.totalFrames == 1;
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vps.ptl.intraConstraintFlag = param.keyframeMax <= 1 || vps.ptl.onePictureOnlyConstraintFlag;
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vps.ptl.bitDepthConstraint = param.internalBitDepth;
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vps.ptl.chromaFormatConstraint = param.internalCsp;
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/* TODO: figure out HighThroughput signaling, aka: HbrFactor in section A.4.2, only available
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* for intra-only profiles (vps.ptl.intraConstraintFlag) */
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vps.ptl.lowerBitRateConstraintFlag = true;
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vps.maxTempSubLayers = param.bEnableTemporalSubLayers ? 2 : 1;
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if (param.internalCsp == X265_CSP_I420 && param.internalBitDepth <= 10)
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{
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/* Probably an HEVC v1 profile, but must check to be sure */
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if (param.internalBitDepth <= 8)
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{
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if (vps.ptl.onePictureOnlyConstraintFlag)
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vps.ptl.profileIdc = Profile::MAINSTILLPICTURE;
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else if (vps.ptl.intraConstraintFlag)
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vps.ptl.profileIdc = Profile::MAINREXT; /* Main Intra */
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else
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vps.ptl.profileIdc = Profile::MAIN;
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}
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else if (param.internalBitDepth <= 10)
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{
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/* note there is no 10bit still picture profile */
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if (vps.ptl.intraConstraintFlag)
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vps.ptl.profileIdc = Profile::MAINREXT; /* Main10 Intra */
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else
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vps.ptl.profileIdc = Profile::MAIN10;
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}
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}
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else
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vps.ptl.profileIdc = Profile::MAINREXT;
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/* determine which profiles are compatible with this stream */
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memset(vps.ptl.profileCompatibilityFlag, 0, sizeof(vps.ptl.profileCompatibilityFlag));
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vps.ptl.profileCompatibilityFlag[vps.ptl.profileIdc] = true;
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if (vps.ptl.profileIdc == Profile::MAIN10 && param.internalBitDepth == 8)
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vps.ptl.profileCompatibilityFlag[Profile::MAIN] = true;
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else if (vps.ptl.profileIdc == Profile::MAIN)
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vps.ptl.profileCompatibilityFlag[Profile::MAIN10] = true;
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else if (vps.ptl.profileIdc == Profile::MAINSTILLPICTURE)
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{
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vps.ptl.profileCompatibilityFlag[Profile::MAIN] = true;
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vps.ptl.profileCompatibilityFlag[Profile::MAIN10] = true;
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}
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else if (vps.ptl.profileIdc == Profile::MAINREXT)
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vps.ptl.profileCompatibilityFlag[Profile::MAINREXT] = true;
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uint32_t lumaSamples = param.sourceWidth * param.sourceHeight;
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uint32_t samplesPerSec = (uint32_t)(lumaSamples * ((double)param.fpsNum / param.fpsDenom));
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uint32_t bitrate = param.rc.vbvMaxBitrate ? param.rc.vbvMaxBitrate : param.rc.bitrate;
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const uint32_t MaxDpbPicBuf = 6;
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vps.ptl.levelIdc = Level::NONE;
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vps.ptl.tierFlag = Level::MAIN;
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const size_t NumLevels = sizeof(levels) / sizeof(levels[0]);
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uint32_t i;
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if (param.bLossless)
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{
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i = 13;
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vps.ptl.minCrForLevel = 1;
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vps.ptl.maxLumaSrForLevel = MAX_UINT;
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vps.ptl.levelIdc = Level::LEVEL8_5;
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vps.ptl.tierFlag = Level::MAIN;
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}
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else for (i = 0; i < NumLevels; i++)
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{
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if (lumaSamples > levels[i].maxLumaSamples)
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continue;
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else if (samplesPerSec > levels[i].maxLumaSamplesPerSecond)
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continue;
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else if (bitrate > levels[i].maxBitrateMain && levels[i].maxBitrateHigh == MAX_UINT)
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continue;
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else if (bitrate > levels[i].maxBitrateHigh)
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continue;
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else if (param.sourceWidth > sqrt(levels[i].maxLumaSamples * 8.0f))
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continue;
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else if (param.sourceHeight > sqrt(levels[i].maxLumaSamples * 8.0f))
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continue;
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uint32_t maxDpbSize = MaxDpbPicBuf;
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if (lumaSamples <= (levels[i].maxLumaSamples >> 2))
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maxDpbSize = X265_MIN(4 * MaxDpbPicBuf, 16);
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else if (lumaSamples <= (levels[i].maxLumaSamples >> 1))
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maxDpbSize = X265_MIN(2 * MaxDpbPicBuf, 16);
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else if (lumaSamples <= ((3 * levels[i].maxLumaSamples) >> 2))
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maxDpbSize = X265_MIN((4 * MaxDpbPicBuf) / 3, 16);
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/* The value of sps_max_dec_pic_buffering_minus1[ HighestTid ] + 1 shall be less than
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* or equal to MaxDpbSize */
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if (vps.maxDecPicBuffering > maxDpbSize)
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continue;
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/* For level 5 and higher levels, the value of CtbSizeY shall be equal to 32 or 64 */
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if (levels[i].levelEnum >= Level::LEVEL5 && param.maxCUSize < 32)
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{
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x265_log(¶m, X265_LOG_WARNING, "level %s detected, but CTU size 16 is non-compliant\n", levels[i].name);
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vps.ptl.profileIdc = Profile::NONE;
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vps.ptl.levelIdc = Level::NONE;
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vps.ptl.tierFlag = Level::MAIN;
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x265_log(¶m, X265_LOG_INFO, "NONE profile, Level-NONE (Main tier)\n");
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return;
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}
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/* The value of NumPocTotalCurr shall be less than or equal to 8 */
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int numPocTotalCurr = param.maxNumReferences + vps.numReorderPics;
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if (numPocTotalCurr > 8)
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{
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x265_log(¶m, X265_LOG_WARNING, "level %s detected, but NumPocTotalCurr (total references) is non-compliant\n", levels[i].name);
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vps.ptl.profileIdc = Profile::NONE;
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vps.ptl.levelIdc = Level::NONE;
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vps.ptl.tierFlag = Level::MAIN;
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x265_log(¶m, X265_LOG_INFO, "NONE profile, Level-NONE (Main tier)\n");
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return;
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}
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#define CHECK_RANGE(value, main, high) (high != MAX_UINT && value > main && value <= high)
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if (CHECK_RANGE(bitrate, levels[i].maxBitrateMain, levels[i].maxBitrateHigh) ||
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CHECK_RANGE((uint32_t)param.rc.vbvBufferSize, levels[i].maxCpbSizeMain, levels[i].maxCpbSizeHigh))
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{
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/* The bitrate or buffer size are out of range for Main tier, but in
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* range for High tier. If the user requested High tier then give
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* them High tier at this level. Otherwise allow the loop to
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* progress to the Main tier of the next level */
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if (param.bHighTier)
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vps.ptl.tierFlag = Level::HIGH;
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else
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continue;
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}
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else
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vps.ptl.tierFlag = Level::MAIN;
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#undef CHECK_RANGE
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vps.ptl.levelIdc = levels[i].levelEnum;
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vps.ptl.minCrForLevel = levels[i].minCompressionRatio;
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vps.ptl.maxLumaSrForLevel = levels[i].maxLumaSamplesPerSecond;
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break;
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}
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static const char *profiles[] = { "None", "Main", "Main 10", "Main Still Picture", "RExt" };
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static const char *tiers[] = { "Main", "High" };
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char profbuf[64];
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strcpy(profbuf, profiles[vps.ptl.profileIdc]);
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bool bStillPicture = false;
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if (vps.ptl.profileIdc == Profile::MAINREXT)
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{
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if (vps.ptl.bitDepthConstraint > 12 && vps.ptl.intraConstraintFlag)
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{
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if (vps.ptl.onePictureOnlyConstraintFlag)
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{
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strcpy(profbuf, "Main 4:4:4 16 Still Picture");
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bStillPicture = true;
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}
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else
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strcpy(profbuf, "Main 4:4:4 16");
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}
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else if (param.internalCsp == X265_CSP_I420)
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{
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X265_CHECK(vps.ptl.intraConstraintFlag || vps.ptl.bitDepthConstraint > 10, "rext fail\n");
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if (vps.ptl.bitDepthConstraint <= 8)
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strcpy(profbuf, "Main");
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else if (vps.ptl.bitDepthConstraint <= 10)
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strcpy(profbuf, "Main 10");
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else if (vps.ptl.bitDepthConstraint <= 12)
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strcpy(profbuf, "Main 12");
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}
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else if (param.internalCsp == X265_CSP_I422)
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{
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/* there is no Main 4:2:2 profile, so it must be signaled as Main10 4:2:2 */
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if (param.internalBitDepth <= 10)
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strcpy(profbuf, "Main 4:2:2 10");
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else if (vps.ptl.bitDepthConstraint <= 12)
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strcpy(profbuf, "Main 4:2:2 12");
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}
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else if (param.internalCsp == X265_CSP_I444)
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{
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if (vps.ptl.bitDepthConstraint <= 8)
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{
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if (vps.ptl.onePictureOnlyConstraintFlag)
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{
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strcpy(profbuf, "Main 4:4:4 Still Picture");
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bStillPicture = true;
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}
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else
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strcpy(profbuf, "Main 4:4:4");
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}
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else if (vps.ptl.bitDepthConstraint <= 10)
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strcpy(profbuf, "Main 4:4:4 10");
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else if (vps.ptl.bitDepthConstraint <= 12)
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strcpy(profbuf, "Main 4:4:4 12");
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}
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else
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strcpy(profbuf, "Unknown");
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if (vps.ptl.intraConstraintFlag && !bStillPicture)
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strcat(profbuf, " Intra");
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}
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x265_log(¶m, X265_LOG_INFO, "%s profile, Level-%s (%s tier)\n",
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profbuf, levels[i].name, tiers[vps.ptl.tierFlag]);
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}
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/* enforce a maximum decoder level requirement, in other words assure that a
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* decoder of the specified level may decode the video about to be created.
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* Lower parameters where necessary to ensure the video will be decodable by a
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* decoder meeting this level of requirement. Some parameters (resolution and
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* frame rate) are non-negotiable and thus this function may fail. In those
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* circumstances it will be quite noisy */
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bool enforceLevel(x265_param& param, VPS& vps)
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{
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vps.numReorderPics = (param.bBPyramid && param.bframes > 1) ? 2 : !!param.bframes;
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vps.maxDecPicBuffering = X265_MIN(MAX_NUM_REF, X265_MAX(vps.numReorderPics + 2, (uint32_t)param.maxNumReferences) + vps.numReorderPics);
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/* no level specified by user, just auto-detect from the configuration */
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if (param.levelIdc <= 0)
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return true;
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uint32_t level = 0;
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while (levels[level].levelIdc != param.levelIdc && level + 1 < sizeof(levels) / sizeof(levels[0]))
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level++;
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if (levels[level].levelIdc != param.levelIdc)
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{
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x265_log(¶m, X265_LOG_WARNING, "specified level %d does not exist\n", param.levelIdc);
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return false;
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}
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LevelSpec& l = levels[level];
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bool highTier = !!param.bHighTier;
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if (highTier && l.maxBitrateHigh == MAX_UINT)
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{
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highTier = false;
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x265_log(¶m, X265_LOG_WARNING, "Level %s has no High tier, using Main tier\n", l.name);
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}
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uint32_t lumaSamples = param.sourceWidth * param.sourceHeight;
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uint32_t samplesPerSec = (uint32_t)(lumaSamples * ((double)param.fpsNum / param.fpsDenom));
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bool ok = true;
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if (lumaSamples > l.maxLumaSamples)
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ok = false;
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else if (param.sourceWidth > sqrt(l.maxLumaSamples * 8.0f))
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ok = false;
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else if (param.sourceHeight > sqrt(l.maxLumaSamples * 8.0f))
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ok = false;
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if (!ok)
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{
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x265_log(¶m, X265_LOG_WARNING, "picture dimensions are out of range for specified level\n");
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return false;
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}
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else if (samplesPerSec > l.maxLumaSamplesPerSecond)
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{
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x265_log(¶m, X265_LOG_WARNING, "frame rate is out of range for specified level\n");
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return false;
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}
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if ((uint32_t)param.rc.vbvMaxBitrate > (highTier ? l.maxBitrateHigh : l.maxBitrateMain))
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{
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param.rc.vbvMaxBitrate = highTier ? l.maxBitrateHigh : l.maxBitrateMain;
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x265_log(¶m, X265_LOG_INFO, "lowering VBV max bitrate to %dKbps\n", param.rc.vbvMaxBitrate);
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}
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if ((uint32_t)param.rc.vbvBufferSize > (highTier ? l.maxCpbSizeHigh : l.maxCpbSizeMain))
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{
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param.rc.vbvBufferSize = highTier ? l.maxCpbSizeHigh : l.maxCpbSizeMain;
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x265_log(¶m, X265_LOG_INFO, "lowering VBV buffer size to %dKb\n", param.rc.vbvBufferSize);
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}
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switch (param.rc.rateControlMode)
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{
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case X265_RC_ABR:
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if ((uint32_t)param.rc.bitrate > (highTier ? l.maxBitrateHigh : l.maxBitrateMain))
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{
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param.rc.bitrate = l.maxBitrateHigh;
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x265_log(¶m, X265_LOG_INFO, "lowering target bitrate to High tier limit of %dKbps\n", param.rc.bitrate);
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}
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break;
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case X265_RC_CQP:
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x265_log(¶m, X265_LOG_WARNING, "Constant QP is inconsistent with specifying a decoder level, no bitrate guarantee is possible.\n");
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return false;
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case X265_RC_CRF:
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if (!param.rc.vbvBufferSize || !param.rc.vbvMaxBitrate)
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{
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if (!param.rc.vbvMaxBitrate)
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param.rc.vbvMaxBitrate = highTier ? l.maxBitrateHigh : l.maxBitrateMain;
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if (!param.rc.vbvBufferSize)
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param.rc.vbvBufferSize = highTier ? l.maxCpbSizeHigh : l.maxCpbSizeMain;
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x265_log(¶m, X265_LOG_WARNING, "Specifying a decoder level with constant rate factor rate-control requires\n");
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x265_log(¶m, X265_LOG_WARNING, "enabling VBV with vbv-bufsize=%dkb vbv-maxrate=%dkbps. VBV outputs are non-deterministic!\n",
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param.rc.vbvBufferSize, param.rc.vbvMaxBitrate);
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}
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break;
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default:
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x265_log(¶m, X265_LOG_ERROR, "Unknown rate control mode is inconsistent with specifying a decoder level\n");
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return false;
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}
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/* The value of sps_max_dec_pic_buffering_minus1[ HighestTid ] + 1 shall be less than or equal to MaxDpbSize */
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const uint32_t MaxDpbPicBuf = 6;
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uint32_t maxDpbSize = MaxDpbPicBuf;
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if (lumaSamples <= (l.maxLumaSamples >> 2))
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maxDpbSize = X265_MIN(4 * MaxDpbPicBuf, 16);
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else if (lumaSamples <= (l.maxLumaSamples >> 1))
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maxDpbSize = X265_MIN(2 * MaxDpbPicBuf, 16);
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else if (lumaSamples <= ((3 * l.maxLumaSamples) >> 2))
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maxDpbSize = X265_MIN((4 * MaxDpbPicBuf) / 3, 16);
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int savedRefCount = param.maxNumReferences;
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while (vps.maxDecPicBuffering > maxDpbSize && param.maxNumReferences > 1)
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{
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param.maxNumReferences--;
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vps.maxDecPicBuffering = X265_MIN(MAX_NUM_REF, X265_MAX(vps.numReorderPics + 1, (uint32_t)param.maxNumReferences) + vps.numReorderPics);
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}
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if (param.maxNumReferences != savedRefCount)
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x265_log(¶m, X265_LOG_INFO, "Lowering max references to %d to meet level requirement\n", param.maxNumReferences);
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/* For level 5 and higher levels, the value of CtbSizeY shall be equal to 32 or 64 */
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if (param.levelIdc >= 50 && param.maxCUSize < 32)
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{
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param.maxCUSize = 32;
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x265_log(¶m, X265_LOG_INFO, "Levels 5.0 and above require a maximum CTU size of at least 32, using --ctu 32\n");
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}
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/* The value of NumPocTotalCurr shall be less than or equal to 8 */
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int numPocTotalCurr = param.maxNumReferences + !!param.bframes;
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if (numPocTotalCurr > 8)
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{
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param.maxNumReferences = 8 - !!param.bframes;
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x265_log(¶m, X265_LOG_INFO, "Lowering max references to %d to meet numPocTotalCurr requirement\n", param.maxNumReferences);
|
|
}
|
|
|
|
return true;
|
|
}
|
|
}
|
|
|
|
#if EXPORT_C_API
|
|
|
|
/* these functions are exported as C functions (default) */
|
|
using namespace X265_NS;
|
|
extern "C" {
|
|
|
|
#else
|
|
|
|
/* these functions exist within private namespace (multilib) */
|
|
namespace X265_NS {
|
|
|
|
#endif
|
|
|
|
int x265_param_apply_profile(x265_param *param, const char *profile)
|
|
{
|
|
if (!param || !profile)
|
|
return 0;
|
|
|
|
/* Check if profile bit-depth requirement is exceeded by internal bit depth */
|
|
bool bInvalidDepth = false;
|
|
#if X265_DEPTH > 8
|
|
if (!strcmp(profile, "main") || !strcmp(profile, "mainstillpicture") || !strcmp(profile, "msp") ||
|
|
!strcmp(profile, "main444-8") || !strcmp(profile, "main-intra") ||
|
|
!strcmp(profile, "main444-intra") || !strcmp(profile, "main444-stillpicture"))
|
|
bInvalidDepth = true;
|
|
#endif
|
|
#if X265_DEPTH > 10
|
|
if (!strcmp(profile, "main10") || !strcmp(profile, "main422-10") || !strcmp(profile, "main444-10") ||
|
|
!strcmp(profile, "main10-intra") || !strcmp(profile, "main422-10-intra") || !strcmp(profile, "main444-10-intra"))
|
|
bInvalidDepth = true;
|
|
#endif
|
|
#if X265_DEPTH > 12
|
|
if (!strcmp(profile, "main12") || !strcmp(profile, "main422-12") || !strcmp(profile, "main444-12") ||
|
|
!strcmp(profile, "main12-intra") || !strcmp(profile, "main422-12-intra") || !strcmp(profile, "main444-12-intra"))
|
|
bInvalidDepth = true;
|
|
#endif
|
|
|
|
if (bInvalidDepth)
|
|
{
|
|
x265_log(param, X265_LOG_ERROR, "%s profile not supported, internal bit depth %d.\n", profile, X265_DEPTH);
|
|
return -1;
|
|
}
|
|
|
|
size_t l = strlen(profile);
|
|
bool bBoolIntra = (l > 6 && !strcmp(profile + l - 6, "-intra")) ||
|
|
!strcmp(profile, "mainstillpicture") || !strcmp(profile, "msp");
|
|
if (bBoolIntra)
|
|
{
|
|
/* The profile may be detected as still picture if param->totalFrames is 1 */
|
|
param->keyframeMax = 1;
|
|
}
|
|
|
|
/* check that input color space is supported by profile */
|
|
if (!strcmp(profile, "main") || !strcmp(profile, "main-intra") ||
|
|
!strcmp(profile, "main10") || !strcmp(profile, "main10-intra") ||
|
|
!strcmp(profile, "main12") || !strcmp(profile, "main12-intra") ||
|
|
!strcmp(profile, "mainstillpicture") || !strcmp(profile, "msp"))
|
|
{
|
|
if (param->internalCsp != X265_CSP_I420)
|
|
{
|
|
x265_log(param, X265_LOG_ERROR, "%s profile not compatible with %s input color space.\n",
|
|
profile, x265_source_csp_names[param->internalCsp]);
|
|
return -1;
|
|
}
|
|
}
|
|
else if (!strcmp(profile, "main422-10") || !strcmp(profile, "main422-10-intra") ||
|
|
!strcmp(profile, "main422-12") || !strcmp(profile, "main422-12-intra"))
|
|
{
|
|
if (param->internalCsp != X265_CSP_I420 && param->internalCsp != X265_CSP_I422)
|
|
{
|
|
x265_log(param, X265_LOG_ERROR, "%s profile not compatible with %s input color space.\n",
|
|
profile, x265_source_csp_names[param->internalCsp]);
|
|
return -1;
|
|
}
|
|
}
|
|
else if (!strcmp(profile, "main444-8") ||
|
|
!strcmp(profile, "main444-intra") || !strcmp(profile, "main444-stillpicture") ||
|
|
!strcmp(profile, "main444-10") || !strcmp(profile, "main444-10-intra") ||
|
|
!strcmp(profile, "main444-12") || !strcmp(profile, "main444-12-intra") ||
|
|
!strcmp(profile, "main444-16-intra") || !strcmp(profile, "main444-16-stillpicture"))
|
|
{
|
|
/* any color space allowed */
|
|
}
|
|
else
|
|
{
|
|
x265_log(param, X265_LOG_ERROR, "unknown profile <%s>\n", profile);
|
|
return -1;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
}
|