Leon Scroggins III | b5e74b9 | 2016-10-26 09:45:45 -0400 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2011 Google Inc. |
| 3 | * |
| 4 | * Use of this source code is governed by a BSD-style license that can be |
| 5 | * found in the LICENSE file. |
| 6 | */ |
| 7 | #include "Movie.h" |
| 8 | #include "SkCanvas.h" |
| 9 | #include "SkPaint.h" |
| 10 | |
| 11 | // We should never see this in normal operation since our time values are |
| 12 | // 0-based. So we use it as a sentinal. |
| 13 | #define UNINITIALIZED_MSEC ((SkMSec)-1) |
| 14 | |
| 15 | Movie::Movie() |
| 16 | { |
| 17 | fInfo.fDuration = UNINITIALIZED_MSEC; // uninitialized |
| 18 | fCurrTime = UNINITIALIZED_MSEC; // uninitialized |
| 19 | fNeedBitmap = true; |
| 20 | } |
| 21 | |
| 22 | void Movie::ensureInfo() |
| 23 | { |
| 24 | if (fInfo.fDuration == UNINITIALIZED_MSEC && !this->onGetInfo(&fInfo)) |
| 25 | memset(&fInfo, 0, sizeof(fInfo)); // failure |
| 26 | } |
| 27 | |
| 28 | SkMSec Movie::duration() |
| 29 | { |
| 30 | this->ensureInfo(); |
| 31 | return fInfo.fDuration; |
| 32 | } |
| 33 | |
| 34 | int Movie::width() |
| 35 | { |
| 36 | this->ensureInfo(); |
| 37 | return fInfo.fWidth; |
| 38 | } |
| 39 | |
| 40 | int Movie::height() |
| 41 | { |
| 42 | this->ensureInfo(); |
| 43 | return fInfo.fHeight; |
| 44 | } |
| 45 | |
| 46 | int Movie::isOpaque() |
| 47 | { |
| 48 | this->ensureInfo(); |
| 49 | return fInfo.fIsOpaque; |
| 50 | } |
| 51 | |
| 52 | bool Movie::setTime(SkMSec time) |
| 53 | { |
| 54 | SkMSec dur = this->duration(); |
| 55 | if (time > dur) |
| 56 | time = dur; |
| 57 | |
| 58 | bool changed = false; |
| 59 | if (time != fCurrTime) |
| 60 | { |
| 61 | fCurrTime = time; |
| 62 | changed = this->onSetTime(time); |
| 63 | fNeedBitmap |= changed; |
| 64 | } |
| 65 | return changed; |
| 66 | } |
| 67 | |
| 68 | const SkBitmap& Movie::bitmap() |
| 69 | { |
| 70 | if (fCurrTime == UNINITIALIZED_MSEC) // uninitialized |
| 71 | this->setTime(0); |
| 72 | |
| 73 | if (fNeedBitmap) |
| 74 | { |
| 75 | if (!this->onGetBitmap(&fBitmap)) // failure |
| 76 | fBitmap.reset(); |
| 77 | fNeedBitmap = false; |
| 78 | } |
| 79 | return fBitmap; |
| 80 | } |
| 81 | |
| 82 | //////////////////////////////////////////////////////////////////// |
| 83 | |
| 84 | #include "SkStream.h" |
| 85 | |
| 86 | Movie* Movie::DecodeMemory(const void* data, size_t length) { |
| 87 | SkMemoryStream stream(data, length, false); |
| 88 | return Movie::DecodeStream(&stream); |
| 89 | } |
| 90 | |
| 91 | Movie* Movie::DecodeFile(const char path[]) { |
| 92 | std::unique_ptr<SkStreamRewindable> stream = SkStream::MakeFromFile(path); |
| 93 | return stream ? Movie::DecodeStream(stream.get()) : nullptr; |
| 94 | } |