mirror of
https://github.com/axiomatic-systems/Bento4.git
synced 2026-01-19 00:05:12 +08:00
232 lines
8.2 KiB
C++
232 lines
8.2 KiB
C++
/*****************************************************************
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| AP4 - MP4 File Comparator
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| Copyright 2002-2017 Axiomatic Systems, LLC
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| This file is part of Bento4/AP4 (MP4 Atom Processing Library).
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| Unless you have obtained Bento4 under a difference license,
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| this version of Bento4 is Bento4|GPL.
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| Bento4|GPL is free software; you can redistribute it and/or modify
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| it under the terms of the GNU General Public License as published by
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| the Free Software Foundation; either version 2, or (at your option)
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| any later version.
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| Bento4|GPL is distributed in the hope that it will be useful,
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| but WITHOUT ANY WARRANTY; without even the implied warranty of
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| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| GNU General Public License for more details.
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| You should have received a copy of the GNU General Public License
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| along with Bento4|GPL; see the file COPYING. If not, write to the
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| Free Software Foundation, 59 Temple Place - Suite 330, Boston, MA
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| 02111-1307, USA.
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****************************************************************/
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/*----------------------------------------------------------------------
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| includes
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+---------------------------------------------------------------------*/
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#include <stdio.h>
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#include <stdlib.h>
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#include "Ap4.h"
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#include "Ap4BitStream.h"
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#include "Ap4Mp4AudioInfo.h"
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#include "Ap4HevcParser.h"
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/*----------------------------------------------------------------------
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| constants
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+---------------------------------------------------------------------*/
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#define BANNER "MP4 Diff - Version 1.0.0\n"\
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"(Bento4 Version " AP4_VERSION_STRING ")\n"\
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"(c) 2002-2017 Axiomatic Systems, LLC"
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/*----------------------------------------------------------------------
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| globals
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+---------------------------------------------------------------------*/
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/*----------------------------------------------------------------------
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| PrintUsageAndExit
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+---------------------------------------------------------------------*/
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static void
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PrintUsageAndExit()
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{
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fprintf(stderr,
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BANNER
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"\n\nusage: mp4diff [options] <input1> <input2>\n"
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);
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exit(1);
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}
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/*----------------------------------------------------------------------
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| DiffSamples
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+---------------------------------------------------------------------*/
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static void
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DiffSamples(unsigned int index,
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AP4_Sample& sample1, AP4_DataBuffer& sample_data1,
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AP4_Sample& sample2, AP4_DataBuffer& sample_data2)
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{
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if (sample_data1.GetDataSize() != sample_data2.GetDataSize()) {
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printf("!!! sample %d: sizes not equal: %d, %d\n", index, sample_data1.GetDataSize(), sample_data2.GetDataSize());
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return;
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}
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const AP4_UI08* data1 = (const AP4_UI08*)sample_data1.GetData();
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const AP4_UI08* data2 = (const AP4_UI08*)sample_data2.GetData();
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bool in_diff = false;
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unsigned int diff_start = 0;
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for (unsigned int i=0; i<sample_data1.GetDataSize(); i++) {
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if (in_diff) {
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if (data1[i] == data2[i]) {
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// end of diff
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printf("!!! sample %d, %d differences at %d / %d\n", index, i-diff_start, diff_start, sample_data1.GetDataSize());
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in_diff = false;
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}
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} else {
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if (data1[i] != data2[i]) {
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diff_start = i;
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in_diff = true;
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}
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}
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}
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if (in_diff) {
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printf("!!! sample %d, %d differences at %d / %d\n", index, sample_data1.GetDataSize()-diff_start, diff_start, sample_data1.GetDataSize());
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}
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}
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/*----------------------------------------------------------------------
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| DiffFragments
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+---------------------------------------------------------------------*/
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static void
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DiffFragments(AP4_Movie& movie1, AP4_ByteStream* stream1, AP4_Movie& movie2, AP4_ByteStream* stream2)
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{
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stream1->Seek(0);
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stream2->Seek(0);
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AP4_LinearReader reader1(movie1, stream1);
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AP4_LinearReader reader2(movie2, stream2);
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AP4_List<AP4_Track>::Item* track_item1 = movie1.GetTracks().FirstItem();
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AP4_List<AP4_Track>::Item* track_item2 = movie2.GetTracks().FirstItem();
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while (track_item1 && track_item2) {
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reader1.EnableTrack(track_item1->GetData()->GetId());
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reader2.EnableTrack(track_item1->GetData()->GetId());
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track_item1 = track_item1->GetNext();
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track_item2 = track_item2->GetNext();
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}
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AP4_Sample sample1;
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AP4_Sample sample2;
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AP4_DataBuffer sample_data1;
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AP4_DataBuffer sample_data2;
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AP4_UI32 prev_track_id = 0;
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for(unsigned int i=0; ; i++) {
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AP4_UI32 track_id1 = 0;
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AP4_UI32 track_id2 = 0;
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AP4_Result result1 = reader1.ReadNextSample(sample1, sample_data1, track_id1);
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AP4_Result result2 = reader2.ReadNextSample(sample2, sample_data2, track_id2);
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if (AP4_SUCCEEDED(result1) && AP4_SUCCEEDED(result2)) {
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if (track_id1 != track_id2) {
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fprintf(stderr, "!!! sample %d, track ID 1 = %d, track ID 2 = %d\n", i, track_id1, track_id2);
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return;
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}
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if (track_id1 != prev_track_id) {
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printf("Track %d:\n", track_id1);
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prev_track_id = track_id1;
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}
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DiffSamples(i, sample1, sample_data1, sample2, sample_data2);
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} else {
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printf("### processed %d samples\n", i+1);
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break;
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}
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}
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}
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/*----------------------------------------------------------------------
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| main
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+---------------------------------------------------------------------*/
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int
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main(int argc, char** argv)
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{
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if (argc < 3) {
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PrintUsageAndExit();
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}
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const char* filename1 = NULL;
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const char* filename2 = NULL;
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while (char* arg = *++argv) {
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if (filename1 == NULL) {
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filename1 = arg;
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} else if (filename2 == NULL) {
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filename2 = arg;
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} else {
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fprintf(stderr, "ERROR: unexpected argument '%s'\n", arg);
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return 1;
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}
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}
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if (filename1 == NULL || filename2 == NULL) {
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fprintf(stderr, "ERROR: filename missing\n");
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return 1;
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}
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AP4_ByteStream* input1 = NULL;
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AP4_Result result = AP4_FileByteStream::Create(filename1,
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AP4_FileByteStream::STREAM_MODE_READ,
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input1);
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if (AP4_FAILED(result)) {
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fprintf(stderr, "ERROR: cannot open input file %s (%d)\n", filename1, result);
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return 1;
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}
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AP4_ByteStream* input2 = NULL;
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result = AP4_FileByteStream::Create(filename2,
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AP4_FileByteStream::STREAM_MODE_READ,
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input2);
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if (AP4_FAILED(result)) {
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fprintf(stderr, "ERROR: cannot open input file %s (%d)\n", filename2, result);
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return 1;
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}
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AP4_File* file1 = new AP4_File(*input1, true);
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AP4_File* file2 = new AP4_File(*input2, true);
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AP4_Movie* movie1 = file1->GetMovie();
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AP4_Movie* movie2 = file2->GetMovie();
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if (movie1 && movie2) {
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AP4_List<AP4_Track>& tracks1 = movie1->GetTracks();
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AP4_List<AP4_Track>& tracks2 = movie1->GetTracks();
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if (tracks1.ItemCount() != tracks2.ItemCount()) {
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fprintf(stderr, "### file 1 has %d tracks, file 2 has %d tracks\n", tracks1.ItemCount(), tracks2.ItemCount());
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} else {
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for (unsigned int i=0; i<tracks1.ItemCount(); i++) {
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AP4_Track* track1;
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AP4_Track* track2;
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tracks1.Get(i, track1);
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tracks2.Get(i, track2);
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printf("--- comparing track ID %d\n", track1->GetId());
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}
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}
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if (movie1->HasFragments() != movie2->HasFragments()) {
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fprintf(stderr, "### file 1 fragmented=%s, file2 fragmented=%s\n",
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movie1->HasFragments() ? "true" : "false",
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movie2->HasFragments() ? "true" : "false");
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}
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if (movie1->HasFragments() && movie2->HasFragments()) {
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DiffFragments(*movie1, input1, *movie2, input2);
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}
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}
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delete file1;
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delete file2;
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input1->Release();
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input2->Release();
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return 0;
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}
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