Alexandre Lision | 8af73cb | 2013-12-10 14:11:20 -0500 | [diff] [blame] | 1 | /* $Id$ */ |
| 2 | /* |
| 3 | * Copyright (C) 2008-2011 Teluu Inc. (http://www.teluu.com) |
| 4 | * |
| 5 | * This program is free software; you can redistribute it and/or modify |
| 6 | * it under the terms of the GNU General Public License as published by |
| 7 | * the Free Software Foundation; either version 2 of the License, or |
| 8 | * (at your option) any later version. |
| 9 | * |
| 10 | * This program is distributed in the hope that it will be useful, |
| 11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 13 | * GNU General Public License for more details. |
| 14 | * |
| 15 | * You should have received a copy of the GNU General Public License |
| 16 | * along with this program; if not, write to the Free Software |
| 17 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 18 | */ |
| 19 | |
| 20 | #include <pjmedia-videodev/config.h> |
| 21 | |
| 22 | |
| 23 | #if defined(PJMEDIA_VIDEO_DEV_HAS_DSHOW) && PJMEDIA_VIDEO_DEV_HAS_DSHOW != 0 |
| 24 | |
| 25 | |
| 26 | #include <assert.h> |
| 27 | #include <streams.h> |
| 28 | |
| 29 | typedef void (*input_callback)(void *user_data, IMediaSample *pMediaSample); |
| 30 | |
| 31 | const GUID CLSID_NullRenderer = {0xF9168C5E, 0xCEB2, 0x4FAA, {0xB6, 0xBF, |
| 32 | 0x32, 0x9B, 0xF3, 0x9F, 0xA1, 0xE4}}; |
| 33 | |
| 34 | const GUID CLSID_SourceFilter = {0xF9168C5E, 0xCEB2, 0x4FAA, {0xB6, 0xBF, |
| 35 | 0x32, 0x9B, 0xF3, 0x9F, 0xA1, 0xE5}}; |
| 36 | |
| 37 | class NullRenderer: public CBaseRenderer |
| 38 | { |
| 39 | public: |
| 40 | NullRenderer(HRESULT *pHr); |
| 41 | virtual ~NullRenderer(); |
| 42 | |
| 43 | virtual HRESULT CheckMediaType(const CMediaType *pmt); |
| 44 | virtual HRESULT DoRenderSample(IMediaSample *pMediaSample); |
| 45 | |
| 46 | input_callback input_cb; |
| 47 | void *user_data; |
| 48 | }; |
| 49 | |
| 50 | class OutputPin: public CBaseOutputPin |
| 51 | { |
| 52 | public: |
| 53 | OutputPin(CBaseFilter *pFilter, CCritSec *pLock, HRESULT *pHr); |
| 54 | ~OutputPin(); |
| 55 | |
| 56 | HRESULT Push(void *buf, long size); |
| 57 | |
| 58 | virtual HRESULT CheckMediaType(const CMediaType *pmt); |
| 59 | virtual HRESULT DecideBufferSize(IMemAllocator *pAlloc, |
| 60 | ALLOCATOR_PROPERTIES *ppropInputRequest); |
| 61 | |
| 62 | CMediaType mediaType; |
| 63 | long bufSize; |
| 64 | }; |
| 65 | |
| 66 | class SourceFilter: public CBaseFilter |
| 67 | { |
| 68 | public: |
| 69 | SourceFilter(); |
| 70 | ~SourceFilter(); |
| 71 | |
| 72 | int GetPinCount(); |
| 73 | CBasePin* GetPin(int n); |
| 74 | |
| 75 | protected: |
| 76 | CCritSec lock; |
| 77 | OutputPin* outPin; |
| 78 | }; |
| 79 | |
| 80 | OutputPin::OutputPin(CBaseFilter *pFilter, CCritSec *pLock, HRESULT *pHr): |
| 81 | CBaseOutputPin("OutputPin", pFilter, pLock, pHr, L"OutputPin") |
| 82 | { |
| 83 | } |
| 84 | |
| 85 | OutputPin::~OutputPin() |
| 86 | { |
| 87 | } |
| 88 | |
| 89 | HRESULT OutputPin::CheckMediaType(const CMediaType *pmt) |
| 90 | { |
| 91 | return S_OK; |
| 92 | } |
| 93 | |
| 94 | HRESULT OutputPin::DecideBufferSize(IMemAllocator *pAlloc, |
| 95 | ALLOCATOR_PROPERTIES *ppropInputRequest) |
| 96 | { |
| 97 | ALLOCATOR_PROPERTIES properties; |
| 98 | |
| 99 | ppropInputRequest->cbBuffer = bufSize; |
| 100 | ppropInputRequest->cBuffers = 1; |
| 101 | |
| 102 | /* First set the buffer descriptions we're interested in */ |
| 103 | pAlloc->SetProperties(ppropInputRequest, &properties); |
| 104 | |
| 105 | return S_OK; |
| 106 | } |
| 107 | |
| 108 | HRESULT OutputPin::Push(void *buf, long size) |
| 109 | { |
| 110 | HRESULT hr; |
| 111 | IMediaSample *pSample; |
| 112 | VIDEOINFOHEADER *vi; |
| 113 | AM_MEDIA_TYPE *pmt; |
| 114 | BYTE *dst_buf; |
| 115 | |
| 116 | /** |
| 117 | * Hold the critical section here as the pin might get disconnected |
| 118 | * during the Deliver() method call. |
| 119 | */ |
| 120 | m_pLock->Lock(); |
| 121 | |
| 122 | hr = GetDeliveryBuffer(&pSample, NULL, NULL, 0); |
| 123 | if (FAILED(hr)) |
| 124 | goto on_error; |
| 125 | |
| 126 | pSample->GetMediaType(&pmt); |
| 127 | if (pmt) { |
| 128 | mediaType.Set(*pmt); |
| 129 | bufSize = pmt->lSampleSize; |
| 130 | } |
| 131 | |
| 132 | pSample->GetPointer(&dst_buf); |
| 133 | vi = (VIDEOINFOHEADER *)mediaType.pbFormat; |
| 134 | if (vi->rcSource.right == vi->bmiHeader.biWidth) { |
| 135 | assert(pSample->GetSize() >= size); |
| 136 | memcpy(dst_buf, buf, size); |
| 137 | } else { |
| 138 | unsigned i, bpp; |
| 139 | unsigned dststride, srcstride; |
| 140 | BYTE *src_buf = (BYTE *)buf; |
| 141 | |
| 142 | bpp = size / abs(vi->bmiHeader.biHeight) / vi->rcSource.right; |
| 143 | dststride = vi->bmiHeader.biWidth * bpp; |
| 144 | srcstride = vi->rcSource.right * bpp; |
| 145 | for (i = abs(vi->bmiHeader.biHeight); i > 0; i--) { |
| 146 | memcpy(dst_buf, src_buf, srcstride); |
| 147 | dst_buf += dststride; |
| 148 | src_buf += srcstride; |
| 149 | } |
| 150 | } |
| 151 | pSample->SetActualDataLength(size); |
| 152 | |
| 153 | hr = Deliver(pSample); |
| 154 | |
| 155 | pSample->Release(); |
| 156 | |
| 157 | on_error: |
| 158 | m_pLock->Unlock(); |
| 159 | return hr; |
| 160 | } |
| 161 | |
| 162 | SourceFilter::SourceFilter(): CBaseFilter("SourceFilter", NULL, &lock, |
| 163 | CLSID_SourceFilter) |
| 164 | { |
| 165 | HRESULT hr; |
| 166 | outPin = new OutputPin(this, &lock, &hr); |
| 167 | } |
| 168 | |
| 169 | SourceFilter::~SourceFilter() |
| 170 | { |
| 171 | } |
| 172 | |
| 173 | int SourceFilter::GetPinCount() |
| 174 | { |
| 175 | return 1; |
| 176 | } |
| 177 | |
| 178 | CBasePin* SourceFilter::GetPin(int n) |
| 179 | { |
| 180 | return outPin; |
| 181 | } |
| 182 | |
| 183 | NullRenderer::NullRenderer(HRESULT *pHr): CBaseRenderer(CLSID_NullRenderer, |
| 184 | "NullRenderer", |
| 185 | NULL, pHr) |
| 186 | { |
| 187 | input_cb = NULL; |
| 188 | } |
| 189 | |
| 190 | NullRenderer::~NullRenderer() |
| 191 | { |
| 192 | } |
| 193 | |
| 194 | HRESULT NullRenderer::CheckMediaType(const CMediaType *pmt) |
| 195 | { |
| 196 | return S_OK; |
| 197 | } |
| 198 | |
| 199 | HRESULT NullRenderer::DoRenderSample(IMediaSample *pMediaSample) |
| 200 | { |
| 201 | if (input_cb) |
| 202 | input_cb(user_data, pMediaSample); |
| 203 | |
| 204 | return S_OK; |
| 205 | } |
| 206 | |
| 207 | extern "C" IBaseFilter* NullRenderer_Create(input_callback input_cb, |
| 208 | void *user_data) |
| 209 | { |
| 210 | HRESULT hr; |
| 211 | NullRenderer *renderer = new NullRenderer(&hr); |
| 212 | renderer->AddRef(); |
| 213 | renderer->input_cb = input_cb; |
| 214 | renderer->user_data = user_data; |
| 215 | |
| 216 | return (CBaseFilter *)renderer; |
| 217 | } |
| 218 | |
| 219 | extern "C" IBaseFilter* SourceFilter_Create(SourceFilter **pSrc) |
| 220 | { |
| 221 | SourceFilter *src = new SourceFilter(); |
| 222 | src->AddRef(); |
| 223 | *pSrc = src; |
| 224 | |
| 225 | return (CBaseFilter *)src; |
| 226 | } |
| 227 | |
| 228 | extern "C" HRESULT SourceFilter_Deliver(SourceFilter *src, |
| 229 | void *buf, long size) |
| 230 | { |
| 231 | return ((OutputPin *)src->GetPin(0))->Push(buf, size); |
| 232 | } |
| 233 | |
| 234 | extern "C" void SourceFilter_SetMediaType(SourceFilter *src, |
| 235 | AM_MEDIA_TYPE *pmt) |
| 236 | { |
| 237 | ((OutputPin *)src->GetPin(0))->mediaType.Set(*pmt); |
| 238 | ((OutputPin *)src->GetPin(0))->bufSize = pmt->lSampleSize; |
| 239 | } |
| 240 | |
| 241 | |
| 242 | #endif /* PJMEDIA_VIDEO_DEV_HAS_DSHOW */ |