ref: b00a2415ffe2895620baf6bae968d547cc723f21
dir: /plugins/in_mp4/utils.c/
/* ** FAAD - Freeware Advanced Audio Decoder ** Copyright (C) 2002 M. Bakker ** ** This program is free software; you can redistribute it and/or modify ** it under the terms of the GNU General Public License as published by ** the Free Software Foundation; either version 2 of the License, or ** (at your option) any later version. ** ** This program is distributed in the hope that it will be useful, ** but WITHOUT ANY WARRANTY; without even the implied warranty of ** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the ** GNU General Public License for more details. ** ** You should have received a copy of the GNU General Public License ** along with this program; if not, write to the Free Software ** Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. ** ** $Id: utils.c,v 1.5 2003/02/09 20:42:52 menno Exp $ **/ #define WIN32_LEAN_AND_MEAN #include <windows.h> #include <mp4.h> #include <faad.h> #include "utils.h" int StringComp(char const *str1, char const *str2, unsigned long len) { signed int c1 = 0, c2 = 0; while (len--) { c1 = tolower(*str1++); c2 = tolower(*str2++); if (c1 == 0 || c1 != c2) break; } return c1 - c2; } int GetAACTrack(MP4FileHandle infile) { /* find AAC track */ int i, rc; int numTracks = MP4GetNumberOfTracks(infile, NULL, 0); for (i = 0; i < numTracks; i++) { MP4TrackId trackId = MP4FindTrackId(infile, i, NULL, 0); const char* trackType = MP4GetTrackType(infile, trackId); if (!strcmp(trackType, MP4_AUDIO_TRACK_TYPE)) { unsigned char *buff = NULL; int buff_size = 0; mp4AudioSpecificConfig mp4ASC; MP4GetTrackESConfiguration(infile, trackId, &buff, &buff_size); if (buff) { rc = AudioSpecificConfig(buff, buff_size, &mp4ASC); free(buff); if (rc < 0) return -1; return trackId; } } } /* can't decode this */ return -1; } int GetAudioTrack(MP4FileHandle infile) { /* find AAC track */ int i; int numTracks = MP4GetNumberOfTracks(infile, NULL, 0); for (i = 0; i < numTracks; i++) { MP4TrackId trackId = MP4FindTrackId(infile, i, NULL, 0); const char* trackType = MP4GetTrackType(infile, trackId); if (!strcmp(trackType, MP4_AUDIO_TRACK_TYPE)) { return trackId; } } /* can't decode this */ return -1; } int GetVideoTrack(MP4FileHandle infile) { /* find AAC track */ int i; int numTracks = MP4GetNumberOfTracks(infile, NULL, 0); for (i = 0; i < numTracks; i++) { MP4TrackId trackId = MP4FindTrackId(infile, i, NULL, 0); const char* trackType = MP4GetTrackType(infile, trackId); if (!strcmp(trackType, MP4_VIDEO_TRACK_TYPE)) { return trackId; } } /* can't decode this */ return -1; } LPTSTR PathFindFileName(LPCTSTR pPath) { LPCTSTR pT; for (pT = pPath; *pPath; pPath = CharNext(pPath)) { if ((pPath[0] == TEXT('\\') || pPath[0] == TEXT(':')) && pPath[1] && (pPath[1] != TEXT('\\'))) pT = pPath + 1; } return (LPTSTR)pT; // const -> non const } char *convert3in4to3in3(void *sample_buffer, int samples) { int i; long *sample_buffer24 = (long*)sample_buffer; char *data = malloc(samples*3*sizeof(char)); for (i = 0; i < samples; i++) { data[i*3] = sample_buffer24[i] & 0xFF; data[i*3+1] = (sample_buffer24[i] >> 8) & 0xFF; data[i*3+2] = (sample_buffer24[i] >> 16) & 0xFF; } return data; }