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SubRenderIntf: Use libass to render ASS subtitles
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,17 @@ | ||
| #pragma once | ||
| #include "ass.h" | ||
|
|
||
| struct ASS_LibraryDeleter | ||
| { | ||
| void operator()(ASS_Library* p) { if (p) ass_library_done(p); } | ||
| }; | ||
|
|
||
| struct ASS_RendererDeleter | ||
| { | ||
| void operator()(ASS_Renderer* p) { if (p) ass_renderer_done(p); } | ||
| }; | ||
|
|
||
| struct ASS_TrackDeleter | ||
| { | ||
| void operator()(ASS_Track* p) { if (p) ass_free_track(p); } | ||
| }; |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,141 @@ | ||
| /* | ||
| * Copyright(C) 2016-2017 Blitzker | ||
| * | ||
| * This program is free software : you can redistribute it and / or modify | ||
| * it under the terms of the GNU General Public License as published by | ||
| * the Free Software Foundation, either version 3 of the License, or | ||
| * (at your option) any later version. | ||
| * | ||
| * This program is distributed in the hope that it will be useful, | ||
| * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.See the | ||
| * GNU General Public License for more details. | ||
| * | ||
| * You should have received a copy of the GNU General Public License | ||
| * along with this program.If not, see <http://www.gnu.org/licenses/>. | ||
| */ | ||
|
|
||
| #include "stdafx.h" | ||
| #include "SubFrame.h" | ||
| #include <ppl.h> | ||
|
|
||
| namespace | ||
| { | ||
| inline POINT GetRectPos(RECT rect) | ||
| { | ||
| return {rect.left, rect.top}; | ||
| } | ||
|
|
||
| inline SIZE GetRectSize(RECT rect) | ||
| { | ||
| return {rect.right - rect.left, rect.bottom - rect.top}; | ||
| } | ||
| } | ||
|
|
||
| SubFrame::SubFrame(RECT rect, ULONGLONG id, ASS_Image* image) | ||
| : CUnknown("", nullptr) | ||
| , m_rect(rect) | ||
| , m_id(id) | ||
| , m_pixelsRect{} | ||
| { | ||
| Flatten(image); | ||
| } | ||
|
|
||
| STDMETHODIMP SubFrame::NonDelegatingQueryInterface(REFIID riid, void** ppv) | ||
| { | ||
| if (riid == __uuidof(ISubRenderFrame)) | ||
| return GetInterface(static_cast<ISubRenderFrame*>(this), ppv); | ||
|
|
||
| return __super::NonDelegatingQueryInterface(riid, ppv); | ||
| } | ||
|
|
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| STDMETHODIMP SubFrame::GetOutputRect(RECT* outputRect) | ||
| { | ||
| CheckPointer(outputRect, E_POINTER); | ||
| *outputRect = m_rect; | ||
| return S_OK; | ||
| } | ||
|
|
||
| STDMETHODIMP SubFrame::GetClipRect(RECT* clipRect) | ||
| { | ||
| CheckPointer(clipRect, E_POINTER); | ||
| *clipRect = m_rect; | ||
| return S_OK; | ||
| } | ||
|
|
||
| STDMETHODIMP SubFrame::GetBitmapCount(int* count) | ||
| { | ||
| CheckPointer(count, E_POINTER); | ||
| *count = (m_pixels ? 1 : 0); | ||
| return S_OK; | ||
| } | ||
|
|
||
| STDMETHODIMP SubFrame::GetBitmap(int index, ULONGLONG* id, POINT* position, SIZE* size, LPCVOID* pixels, int* pitch) | ||
| { | ||
| if (index != 0) return E_INVALIDARG; | ||
|
|
||
| if (!id && !position && !size && !pixels && !pitch) | ||
| return S_FALSE; | ||
|
|
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| if (id) | ||
| *id = m_id; | ||
| if (position) | ||
| *position = GetRectPos(m_pixelsRect); | ||
| if (size) | ||
| *size = GetRectSize(m_pixelsRect); | ||
| if (pixels) | ||
| *pixels = m_pixels.get(); | ||
| if (pitch) | ||
| *pitch = size->cx * 4; | ||
|
|
||
| return S_OK; | ||
| } | ||
|
|
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| void SubFrame::Flatten(ASS_Image* image) | ||
| { | ||
| if (image) | ||
| { | ||
| for (auto i = image; i != nullptr; i = i->next) | ||
| { | ||
| RECT rect1 = m_pixelsRect; | ||
| RECT rect2 = {i->dst_x, i->dst_y, i->dst_x + i->w, i->dst_y + i->h}; | ||
| UnionRect(&m_pixelsRect, &rect1, &rect2); | ||
| } | ||
|
|
||
| const POINT pixelsPoint = GetRectPos(m_pixelsRect); | ||
| const SIZE pixelsSize = GetRectSize(m_pixelsRect); | ||
| m_pixels = std::make_unique<uint32_t[]>(pixelsSize.cx * pixelsSize.cy); | ||
|
|
||
| for (auto i = image; i != nullptr; i = i->next) | ||
| { | ||
| concurrency::parallel_for(0, i->h, [&](int y) | ||
| { | ||
| for (int x = 0; x < i->w; ++x) | ||
| { | ||
| uint32_t& dest = m_pixels[(i->dst_y + y - pixelsPoint.y) * pixelsSize.cx + | ||
| (i->dst_x + x - pixelsPoint.x)]; | ||
|
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| uint32_t destA = (dest & 0xff000000) >> 24; | ||
|
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| uint32_t srcA = i->bitmap[y * i->stride + x] * (0xff - (i->color & 0x000000ff)); | ||
| srcA >>= 8; | ||
|
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| uint32_t compA = 0xff - srcA; | ||
|
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| uint32_t outA = srcA + ((destA * compA) >> 8); | ||
|
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| uint32_t outR = ((i->color & 0xff000000) >> 8) * srcA + (dest & 0x00ff0000) * compA; | ||
| outR >>= 8; | ||
|
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| uint32_t outG = ((i->color & 0x00ff0000) >> 8) * srcA + (dest & 0x0000ff00) * compA; | ||
| outG >>= 8; | ||
|
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| uint32_t outB = ((i->color & 0x0000ff00) >> 8) * srcA + (dest & 0x000000ff) * compA; | ||
| outB >>= 8; | ||
|
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| dest = (outA << 24) + (outR & 0x00ff0000) + (outG & 0x0000ff00) + (outB & 0x000000ff); | ||
| } | ||
| }, concurrency::static_partitioner()); | ||
| } | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,50 @@ | ||
| /* | ||
| * Copyright(C) 2016-2017 Blitzker | ||
| * | ||
| * This program is free software : you can redistribute it and / or modify | ||
| * it under the terms of the GNU General Public License as published by | ||
| * the Free Software Foundation, either version 3 of the License, or | ||
| * (at your option) any later version. | ||
| * | ||
| * This program is distributed in the hope that it will be useful, | ||
| * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.See the | ||
| * GNU General Public License for more details. | ||
| * | ||
| * You should have received a copy of the GNU General Public License | ||
| * along with this program.If not, see <http://www.gnu.org/licenses/>. | ||
| */ | ||
|
|
||
| #pragma once | ||
|
|
||
| #include <ass.h> | ||
|
|
||
| class SubFrame final | ||
| : public CUnknown | ||
| , public ISubRenderFrame | ||
| { | ||
| public: | ||
|
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| SubFrame(RECT rect, ULONGLONG id, ASS_Image* image); | ||
|
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| DECLARE_IUNKNOWN; | ||
|
|
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| // CUnknown | ||
| STDMETHODIMP NonDelegatingQueryInterface(REFIID riid, void** ppv) override; | ||
|
|
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| // ISubRenderFrame | ||
| STDMETHODIMP GetOutputRect(RECT* outputRect) override; | ||
| STDMETHODIMP GetClipRect(RECT* clipRect) override; | ||
| STDMETHODIMP GetBitmapCount(int* count) override; | ||
| STDMETHODIMP GetBitmap(int index, ULONGLONG* id, POINT* position, SIZE* size, LPCVOID* pixels, int* pitch) override; | ||
|
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| private: | ||
|
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| void Flatten(ASS_Image* image); | ||
|
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| const RECT m_rect; | ||
| const ULONGLONG m_id; | ||
|
|
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| std::unique_ptr<uint32_t[]> m_pixels; | ||
| RECT m_pixelsRect; | ||
| }; |
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