mirror of
https://github.com/hrydgard/ppsspp.git
synced 2026-10-17 16:30:30 +02:00
Henrik RydgårdandClaude Opus 5
8fa0826bdb
__MpegBaseInit was called by __MpegInit rather than by __KernelInit, and __MpegBaseShutdown had just been added the same way. Every other module is started and stopped directly by the kernel - __MpegBaseDoState already was - so do the same here and let sceMpeg.cpp mind only its own state. The order is unchanged: __MpegBaseInit ran first inside __MpegInit and now sits just before it, __MpegBaseShutdown ran last and now sits just after. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
76 lines
3.5 KiB
C++
76 lines
3.5 KiB
C++
// Copyright (c) 2026- PPSSPP Project.
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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, version 2.0 or later versions.
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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 2.0 for more details.
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// A copy of the GPL 2.0 should have been included with the program.
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// If not, see http://www.gnu.org/licenses/
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// Official git repository and contact information can be found at
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// https://github.com/hrydgard/ppsspp and http://www.ppsspp.org/.
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#pragma once
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#include <vector>
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#include "Common/CommonTypes.h"
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class PointerWrap;
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void Register_sceMpegbase();
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// Called per boot, from __KernelInit and __KernelShutdown, around sceMpeg's own pair.
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void __MpegBaseInit();
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void __MpegBaseShutdown();
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void __MpegBaseDoState(PointerWrap &p);
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// Takes the PES payload sceMpegBasePESpacketCopy gathered for a given destination. On hardware that
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// copy lands in Media Engine memory, which sceVideocodec would then read back; we keep it here
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// instead. The payload is moved out and dropped from the table, so each one is decoded once.
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// Empty if nothing was copied to that address.
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std::vector<u8> MpegBaseTakePESPacket(u32 dest);
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// Un-tiles a decoded frame from the eight buffers the Media Engine lays it out in into three
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// planes. The buffers are in sceVideocodec's order: four luma, then four chroma. cb and cr come
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// out at half width and half height, as YUV420 does.
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//
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// The planes point into scratch that is reused by the next call, so read them before calling again.
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bool ReadTiledYCbCr(const u32 *buffers, int width, int height,
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const u8 **luma, const u8 **cb, const u8 **cr);
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// The de-tiling on its own, taking the eight buffers already resolved to host pointers, so it can
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// be measured and checked without a game - see TestMpegCsc. A null entry in src leaves that
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// buffer's share of the output alone.
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void UntileYCbCr(u8 *luma, u8 *cb, u8 *cr, const u8 *const src[8], const int sizes[8],
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int width, int height);
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// Converts a rectangle of a planar YCbCr420 frame to RGB, the way the DMACPLUS does on the way to
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// the screen. Pure, so it can be measured and checked on its own - see TestMpegCsc.
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//
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// luma is width by height; cb and cr are half that in both directions. dest is destStride pixels
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// wide in the format pixelMode names (a GEBufferFormat), and the range lands at its origin.
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void MpegCscRange(u8 *dest, int destStride, int pixelMode,
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const u8 *luma, const u8 *cb, const u8 *cr, int width,
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int rangeX, int rangeY, int rangeWidth, int rangeHeight);
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// The two implementations behind it, exposed so TestMpegCsc can measure and compare them.
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// The scalar one handles anything; the swscale one refuses what it cannot express and is then
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// not used. They do not agree to the bit - swscale rounds its own way - so the scalar one is
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// what the reference in the test is checked against.
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void MpegCscRangeScalar(u8 *dest, int destStride, int pixelMode,
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const u8 *luma, const u8 *cb, const u8 *cr, int width,
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int rangeX, int rangeY, int rangeWidth, int rangeHeight);
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bool MpegCscRangeSws(u8 *dest, int destStride, int pixelMode,
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const u8 *luma, const u8 *cb, const u8 *cr, int width,
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int rangeX, int rangeY, int rangeWidth, int rangeHeight);
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// Frees the cached swscale context.
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void MpegCscShutdown();
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