| 1 | /***************************************************************************** |
| 2 | * Copyright (C) 2013 x265 project |
| 3 | * |
| 4 | * Authors: Steve Borho <steve@borho.org> |
| 5 | * |
| 6 | * This program is free software; you can redistribute it and/or modify |
| 7 | * it under the terms of the GNU General Public License as published by |
| 8 | * the Free Software Foundation; either version 2 of the License, or |
| 9 | * (at your option) any later version. |
| 10 | * |
| 11 | * This program is distributed in the hope that it will be useful, |
| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 | * GNU General Public License for more details. |
| 15 | * |
| 16 | * You should have received a copy of the GNU General Public License |
| 17 | * along with this program; if not, write to the Free Software |
| 18 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02111, USA. |
| 19 | * |
| 20 | * This program is also available under a commercial proprietary license. |
| 21 | * For more information, contact us at license @ x265.com. |
| 22 | *****************************************************************************/ |
| 23 | |
| 24 | #include "yuv.h" |
| 25 | #include "common.h" |
| 26 | |
| 27 | #include <iostream> |
| 28 | |
| 29 | #define ENABLE_THREADING 1 |
| 30 | |
| 31 | #if _WIN32 |
| 32 | #include <io.h> |
| 33 | #include <fcntl.h> |
| 34 | #if defined(_MSC_VER) |
| 35 | #pragma warning(disable: 4996) // POSIX setmode and fileno deprecated |
| 36 | #endif |
| 37 | #endif |
| 38 | |
| 39 | using namespace x265; |
| 40 | using namespace std; |
| 41 | |
| 42 | YUVInput::YUVInput(InputFileInfo& info) |
| 43 | { |
| 44 | for (int i = 0; i < QUEUE_SIZE; i++) |
| 45 | buf[i] = NULL; |
| 46 | |
| 47 | readCount.set(0); |
| 48 | writeCount.set(0); |
| 49 | depth = info.depth; |
| 50 | width = info.width; |
| 51 | height = info.height; |
| 52 | colorSpace = info.csp; |
| 53 | threadActive = false; |
| 54 | ifs = NULL; |
| 55 | |
| 56 | uint32_t pixelbytes = depth > 8 ? 2 : 1; |
| 57 | framesize = 0; |
| 58 | for (int i = 0; i < x265_cli_csps[colorSpace].planes; i++) |
| 59 | { |
| 60 | uint32_t w = width >> x265_cli_csps[colorSpace].width[i]; |
| 61 | uint32_t h = height >> x265_cli_csps[colorSpace].height[i]; |
| 62 | framesize += w * h * pixelbytes; |
| 63 | } |
| 64 | |
| 65 | if (width == 0 || height == 0 || info.fpsNum == 0 || info.fpsDenom == 0) |
| 66 | { |
| 67 | x265_log(NULL, X265_LOG_ERROR, "yuv: width, height, and FPS must be specified\n"); |
| 68 | return; |
| 69 | } |
| 70 | |
| 71 | if (!strcmp(info.filename, "-")) |
| 72 | { |
| 73 | ifs = &cin; |
| 74 | #if _WIN32 |
| 75 | setmode(fileno(stdin), O_BINARY); |
| 76 | #endif |
| 77 | } |
| 78 | else |
| 79 | ifs = new ifstream(info.filename, ios::binary | ios::in); |
| 80 | |
| 81 | if (ifs && ifs->good()) |
| 82 | threadActive = true; |
| 83 | else |
| 84 | { |
| 85 | if (ifs && ifs != &cin) |
| 86 | delete ifs; |
| 87 | ifs = NULL; |
| 88 | return; |
| 89 | } |
| 90 | |
| 91 | for (uint32_t i = 0; i < QUEUE_SIZE; i++) |
| 92 | { |
| 93 | buf[i] = X265_MALLOC(char, framesize); |
| 94 | if (buf[i] == NULL) |
| 95 | { |
| 96 | x265_log(NULL, X265_LOG_ERROR, "yuv: buffer allocation failure, aborting\n"); |
| 97 | threadActive = false; |
| 98 | return; |
| 99 | } |
| 100 | } |
| 101 | |
| 102 | info.frameCount = -1; |
| 103 | |
| 104 | /* try to estimate frame count, if this is not stdin */ |
| 105 | if (ifs != &cin) |
| 106 | { |
| 107 | istream::pos_type cur = ifs->tellg(); |
| 108 | |
| 109 | #if defined(_MSC_VER) && _MSC_VER < 1700 |
| 110 | /* Older MSVC versions cannot handle 64bit file sizes properly, so go native */ |
| 111 | HANDLE hFile = CreateFileA(info.filename, GENERIC_READ, |
| 112 | FILE_SHARE_READ | FILE_SHARE_WRITE, NULL, OPEN_EXISTING, |
| 113 | FILE_ATTRIBUTE_NORMAL, NULL); |
| 114 | if (hFile != INVALID_HANDLE_VALUE) |
| 115 | { |
| 116 | LARGE_INTEGER size; |
| 117 | if (GetFileSizeEx(hFile, &size)) |
| 118 | info.frameCount = (int)((size.QuadPart - (int64_t)cur) / framesize); |
| 119 | CloseHandle(hFile); |
| 120 | } |
| 121 | #else // if defined(_MSC_VER) && _MSC_VER < 1700 |
| 122 | if (cur >= 0) |
| 123 | { |
| 124 | ifs->seekg(0, ios::end); |
| 125 | istream::pos_type size = ifs->tellg(); |
| 126 | ifs->seekg(cur, ios::beg); |
| 127 | if (size > 0) |
| 128 | info.frameCount = (int)((size - cur) / framesize); |
| 129 | } |
| 130 | #endif // if defined(_MSC_VER) && _MSC_VER < 1700 |
| 131 | } |
| 132 | |
| 133 | if (info.skipFrames) |
| 134 | { |
| 135 | #if X86_64 |
| 136 | ifs->seekg((uint64_t)framesize * info.skipFrames, ios::cur); |
| 137 | #else |
| 138 | for (int i = 0; i < info.skipFrames; i++) |
| 139 | ifs->ignore(framesize); |
| 140 | #endif |
| 141 | } |
| 142 | } |
| 143 | |
| 144 | YUVInput::~YUVInput() |
| 145 | { |
| 146 | if (ifs && ifs != &cin) |
| 147 | delete ifs; |
| 148 | for (int i = 0; i < QUEUE_SIZE; i++) |
| 149 | X265_FREE(buf[i]); |
| 150 | } |
| 151 | |
| 152 | void YUVInput::release() |
| 153 | { |
| 154 | threadActive = false; |
| 155 | readCount.set(readCount.get()); // unblock read thread |
| 156 | stop(); |
| 157 | delete this; |
| 158 | } |
| 159 | |
| 160 | void YUVInput::startReader() |
| 161 | { |
| 162 | #if ENABLE_THREADING |
| 163 | if (threadActive) |
| 164 | start(); |
| 165 | #endif |
| 166 | } |
| 167 | |
| 168 | void YUVInput::threadMain() |
| 169 | { |
| 170 | while (threadActive) |
| 171 | { |
| 172 | if (!populateFrameQueue()) |
| 173 | break; |
| 174 | } |
| 175 | |
| 176 | threadActive = false; |
| 177 | writeCount.set(writeCount.get()); // unblock readPicture |
| 178 | } |
| 179 | |
| 180 | bool YUVInput::populateFrameQueue() |
| 181 | { |
| 182 | if (!ifs || ifs->fail()) |
| 183 | return false; |
| 184 | |
| 185 | /* wait for room in the ring buffer */ |
| 186 | int written = writeCount.get(); |
| 187 | int read = readCount.get(); |
| 188 | while (written - read > QUEUE_SIZE - 2) |
| 189 | { |
| 190 | read = readCount.waitForChange(read); |
| 191 | if (!threadActive) |
| 192 | // release() has been called |
| 193 | return false; |
| 194 | } |
| 195 | |
| 196 | ifs->read(buf[written % QUEUE_SIZE], framesize); |
| 197 | if (ifs->good()) |
| 198 | { |
| 199 | writeCount.incr(); |
| 200 | return true; |
| 201 | } |
| 202 | else |
| 203 | return false; |
| 204 | } |
| 205 | |
| 206 | bool YUVInput::readPicture(x265_picture& pic) |
| 207 | { |
| 208 | int read = readCount.get(); |
| 209 | int written = writeCount.get(); |
| 210 | |
| 211 | #if ENABLE_THREADING |
| 212 | |
| 213 | /* only wait if the read thread is still active */ |
| 214 | while (threadActive && read == written) |
| 215 | written = writeCount.waitForChange(written); |
| 216 | |
| 217 | #else |
| 218 | |
| 219 | populateFrameQueue(); |
| 220 | |
| 221 | #endif // if ENABLE_THREADING |
| 222 | |
| 223 | if (read < written) |
| 224 | { |
| 225 | uint32_t pixelbytes = depth > 8 ? 2 : 1; |
| 226 | pic.colorSpace = colorSpace; |
| 227 | pic.bitDepth = depth; |
| 228 | pic.stride[0] = width * pixelbytes; |
| 229 | pic.stride[1] = pic.stride[0] >> x265_cli_csps[colorSpace].width[1]; |
| 230 | pic.stride[2] = pic.stride[0] >> x265_cli_csps[colorSpace].width[2]; |
| 231 | pic.planes[0] = buf[read % QUEUE_SIZE]; |
| 232 | pic.planes[1] = (char*)pic.planes[0] + pic.stride[0] * height; |
| 233 | pic.planes[2] = (char*)pic.planes[1] + pic.stride[1] * (height >> x265_cli_csps[colorSpace].height[1]); |
| 234 | readCount.incr(); |
| 235 | return true; |
| 236 | } |
| 237 | else |
| 238 | return false; |
| 239 | } |