1 /* 2 * Copyright (c) 2012 The WebRTC project authors. All Rights Reserved. 3 * 4 * Use of this source code is governed by a BSD-style license 5 * that can be found in the LICENSE file in the root of the source 6 * tree. An additional intellectual property rights grant can be found 7 * in the file PATENTS. All contributing project authors may 8 * be found in the AUTHORS file in the root of the source tree. 9 */ 10 11 #include "webrtc/tools/frame_editing/frame_editing_lib.h" 12 13 #include <stdio.h> 14 #include <stdlib.h> 15 #include <string.h> 16 17 #include "webrtc/tools/simple_command_line_parser.h" 18 19 // A command-line tool to edit a YUV-video (I420 sub-sampled). 20 int main(int argc, char** argv) { 21 std::string program_name = argv[0]; 22 std::string usage = "Deletes a series of frames in a yuv file." 23 " Only I420 is supported!\n" 24 "Example usage:\n" + program_name + 25 " --in_path=input.yuv --width=320 --height=240 --f=60 --interval=1 --l=120" 26 " --out_path=edited_clip.yuv\n" 27 "Command line flags:\n" 28 "--in_path(string): Path and filename to the input file\n" 29 "--width(int): Width in pixels of the frames in the input file." 30 " Default: -1\n" 31 "--height(int): Height in pixels of the frames in the input file." 32 " Default: -1\n" 33 "--f(int): First frame to process. Default: -1\n" 34 "--l(int): Last frame to process. Default: -1\n" 35 "Frame numbering starts at 1. The set of frames to be processed includes " 36 "the frame with the number <f> and <l>.\n" 37 "--interval(int): Interval specifies with what ratio the number of frames " 38 "should be increased or decreased with.\n" 39 "If you set <interval> to a positive number, frames between <f> and <l> " 40 "will be inserted <interval> times." 41 " If you set <interval> to a negative number then the amount of frames " 42 "between <f> and <l> will be decreased with a ratio of abs(interval)." 43 " Set interval=-1 if every frame between <f> and <l> should be " 44 "deleted. Set interval=-2 if every second frame should be deleted, and so " 45 "on. Frame numbering between <f> and <l> starts with 1 and frames with" 46 " number n where (n - 1) % interval == 0 will be kept.\n" 47 "Example 1:\n" 48 "If one clip has 10 frames (1 to 10) and you specify <f>=4, <l>=7 and " 49 "interval=2, then you will get a clip that contains frame " 50 "1, 2, 3, 4, 4, 5, 5, 6, 6, 7, 7, 8, 9 and 10.\n" 51 "Example 2:\n" 52 "If you specify f=4, l=7 and interval=-1, then you will get a clip that" 53 " contains frame 1, 2, 3, 8, 9 and 10.\n" 54 "Example 3:\n" 55 "If one clip has 10 frames (1 to 10), and you specify f=1, l=10 and " 56 " interval=-4, then you will get a clip that contains frame " 57 "1, 5 and 9.\n" 58 "No interpolation is done when up-sampling." 59 " Default: -1\n" 60 "--out_path(string): The output file to which frames are written." 61 " Default: output.yuv\n"; 62 63 webrtc::test::CommandLineParser parser; 64 65 // Init the parser and set the usage message 66 parser.Init(argc, argv); 67 parser.SetUsageMessage(usage); 68 parser.SetFlag("in_path", "-1"); 69 parser.SetFlag("width", "-1"); 70 parser.SetFlag("height", "-1"); 71 parser.SetFlag("f", "-1"); 72 parser.SetFlag("interval", "-1"); 73 parser.SetFlag("l", "-1"); 74 parser.SetFlag("out_path", "edited_output.yuv"); 75 parser.SetFlag("help", "false"); 76 77 parser.ProcessFlags(); 78 if (parser.GetFlag("help") == "true") { 79 parser.PrintUsageMessage(); 80 exit(EXIT_SUCCESS); 81 } 82 parser.PrintEnteredFlags(); 83 84 const char* in_path = parser.GetFlag("in_path").c_str(); 85 int width = strtol((parser.GetFlag("width")).c_str(), NULL, 10); 86 int height = strtol((parser.GetFlag("height")).c_str(), NULL, 10); 87 int first_frame_to_cut = strtol((parser.GetFlag("f")).c_str(), NULL, 10); 88 int interval = strtol((parser.GetFlag("interval")).c_str(), NULL, 10); 89 int last_frame_to_cut = strtol((parser.GetFlag("l")).c_str(), NULL, 10); 90 91 const char* out_path = parser.GetFlag("out_path").c_str(); 92 93 if (!strcmp(in_path, "-1")) { 94 fprintf(stderr, "You must specify a file to edit\n"); 95 return -1; 96 } 97 98 if (first_frame_to_cut <= 0 || last_frame_to_cut <= 0) { 99 fprintf(stderr, "Error: You must specify which frames to cut!\n"); 100 return -2; 101 } 102 103 if (width <= 0 || height <= 0) { 104 fprintf(stderr, "Error: width or height cannot be <= 0!\n"); 105 return -3; 106 } 107 return webrtc::EditFrames(in_path, width, height, first_frame_to_cut, 108 interval, last_frame_to_cut, out_path); 109 } 110
