The Tor Browser / file comparison
comparison: image/encoders/jpeg/nsJPEGEncoder.h
image/encoders/jpeg/nsJPEGEncoder.h
- branch
- TOR_BUG_9701
- changeset 15
- b8a032363ba2
equal
deleted
inserted
replaced
| -1:000000000000 | 0:42941b55879f |
|---|---|
| 1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- | |
| 2 * This Source Code Form is subject to the terms of the Mozilla Public | |
| 3 * License, v. 2.0. If a copy of the MPL was not distributed with this | |
| 4 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ | |
| 5 | |
| 6 #include "imgIEncoder.h" | |
| 7 | |
| 8 #include "mozilla/ReentrantMonitor.h" | |
| 9 #include "mozilla/Attributes.h" | |
| 10 | |
| 11 #include "nsCOMPtr.h" | |
| 12 | |
| 13 // needed for JPEG library | |
| 14 #include <stdio.h> | |
| 15 | |
| 16 extern "C" { | |
| 17 #include "jpeglib.h" | |
| 18 } | |
| 19 | |
| 20 #define NS_JPEGENCODER_CID \ | |
| 21 { /* ac2bb8fe-eeeb-4572-b40f-be03932b56e0 */ \ | |
| 22 0xac2bb8fe, \ | |
| 23 0xeeeb, \ | |
| 24 0x4572, \ | |
| 25 {0xb4, 0x0f, 0xbe, 0x03, 0x93, 0x2b, 0x56, 0xe0} \ | |
| 26 } | |
| 27 | |
| 28 // Provides JPEG encoding functionality. Use InitFromData() to do the | |
| 29 // encoding. See that function definition for encoding options. | |
| 30 | |
| 31 class nsJPEGEncoder MOZ_FINAL : public imgIEncoder | |
| 32 { | |
| 33 typedef mozilla::ReentrantMonitor ReentrantMonitor; | |
| 34 public: | |
| 35 NS_DECL_THREADSAFE_ISUPPORTS | |
| 36 NS_DECL_IMGIENCODER | |
| 37 NS_DECL_NSIINPUTSTREAM | |
| 38 NS_DECL_NSIASYNCINPUTSTREAM | |
| 39 | |
| 40 nsJPEGEncoder(); | |
| 41 | |
| 42 private: | |
| 43 ~nsJPEGEncoder(); | |
| 44 | |
| 45 protected: | |
| 46 | |
| 47 void ConvertHostARGBRow(const uint8_t* aSrc, uint8_t* aDest, | |
| 48 uint32_t aPixelWidth); | |
| 49 void ConvertRGBARow(const uint8_t* aSrc, uint8_t* aDest, uint32_t aPixelWidth); | |
| 50 | |
| 51 static void initDestination(jpeg_compress_struct* cinfo); | |
| 52 static boolean emptyOutputBuffer(jpeg_compress_struct* cinfo); | |
| 53 static void termDestination(jpeg_compress_struct* cinfo); | |
| 54 | |
| 55 static void errorExit(jpeg_common_struct* cinfo); | |
| 56 | |
| 57 void NotifyListener(); | |
| 58 | |
| 59 bool mFinished; | |
| 60 | |
| 61 // image buffer | |
| 62 uint8_t* mImageBuffer; | |
| 63 uint32_t mImageBufferSize; | |
| 64 uint32_t mImageBufferUsed; | |
| 65 | |
| 66 uint32_t mImageBufferReadPoint; | |
| 67 | |
| 68 nsCOMPtr<nsIInputStreamCallback> mCallback; | |
| 69 nsCOMPtr<nsIEventTarget> mCallbackTarget; | |
| 70 uint32_t mNotifyThreshold; | |
| 71 | |
| 72 /* | |
| 73 nsJPEGEncoder is designed to allow one thread to pump data into it while another | |
| 74 reads from it. We lock to ensure that the buffer remains append-only while | |
| 75 we read from it (that it is not realloced) and to ensure that only one thread | |
| 76 dispatches a callback for each call to AsyncWait. | |
| 77 */ | |
| 78 ReentrantMonitor mReentrantMonitor; | |
| 79 }; |
