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/*
* The contents of this file are subject to the Mozilla Public
* License Version 1.1 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS
* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
* implied. See the License for the specific language governing
* rights and limitations under the License.
*
* The Original Code is MPEG4IP.
*
* The Initial Developer of the Original Code is Cisco Systems Inc.
* Portions created by Cisco Systems Inc. are
* Copyright (C) Cisco Systems Inc. 2002. All Rights Reserved.
*
* Contributor(s):
* Bill May wmay@cisco.com
* Alix Marchandise-Franquet alix@cisco.com
*/
#include "mp4creator.h"
#include "mpeg2_ps.h"
static MP4TrackId VideoCreate (MP4FileHandle mp4file,
mpeg2ps_t *file,
int vstream,
bool doEncrypt)
{
double frame_rate = mpeg2ps_get_video_stream_framerate(file, vstream);
uint8_t video_type;
uint16_t w, h;
MP4TrackId id;
ismacryp_session_id_t ismaCrypSId;
mp4v2_ismacrypParams *icPp = (mp4v2_ismacrypParams *) malloc(sizeof(mp4v2_ismacrypParams));
memset(icPp, 0, sizeof(mp4v2_ismacrypParams));
#ifdef _WIN32
MP4Duration mp4FrameDuration;
mp4FrameDuration =
(MP4Duration)((double)Mp4TimeScale / frame_rate);
#else
MP4Duration mp4FrameDuration =
(MP4Duration)(Mp4TimeScale / frame_rate);
#endif
h = mpeg2ps_get_video_stream_height(file, vstream);
w = mpeg2ps_get_video_stream_width(file, vstream);
video_type = mpeg2ps_get_video_stream_mp4_type(file, vstream);
if (doEncrypt) {
// initialize session
if (ismacrypInitSession(&ismaCrypSId,KeyTypeVideo) != 0) {
fprintf(stderr, "%s: could not initialize the ISMAcryp session\n",
ProgName);
return MP4_INVALID_TRACK_ID;
}
if (ismacrypGetScheme(ismaCrypSId, &(icPp->scheme_type)) != ismacryp_rc_ok) {
fprintf(stderr, "%s: could not get ismacryp scheme type. sid %d\n",
ProgName, ismaCrypSId);
ismacrypEndSession(ismaCrypSId);
return MP4_INVALID_TRACK_ID;
}
if (ismacrypGetSchemeVersion(ismaCrypSId, &(icPp->scheme_version)) != ismacryp_rc_ok) {
fprintf(stderr, "%s: could not get ismacryp scheme ver. sid %d\n",
ProgName, ismaCrypSId);
ismacrypEndSession(ismaCrypSId);
return MP4_INVALID_TRACK_ID;
}
if (ismacrypGetKMSUri(ismaCrypSId, &(icPp->kms_uri)) != ismacryp_rc_ok) {
fprintf(stderr, "%s: could not get ismacryp kms uri. sid %d\n",
ProgName, ismaCrypSId);
CHECK_AND_FREE(icPp->kms_uri);
ismacrypEndSession(ismaCrypSId);
return MP4_INVALID_TRACK_ID;
}
if ( ismacrypGetSelectiveEncryption(ismaCrypSId, &(icPp->selective_enc)) != ismacryp_rc_ok ) {
fprintf(stderr, "%s: could not get ismacryp selec enc. sid %d\n",
ProgName, ismaCrypSId);
ismacrypEndSession(ismaCrypSId);
return MP4_INVALID_TRACK_ID;
}
if (ismacrypGetKeyIndicatorLength(ismaCrypSId, &(icPp->key_ind_len)) != ismacryp_rc_ok) {
fprintf(stderr, "%s: could not get ismacryp key ind len. sid %d\n",
ProgName, ismaCrypSId);
ismacrypEndSession(ismaCrypSId);
return MP4_INVALID_TRACK_ID;
}
if (ismacrypGetIVLength(ismaCrypSId, &(icPp->iv_len)) != ismacryp_rc_ok) {
fprintf(stderr, "%s: could not get ismacryp iv len. sid %d\n",
ProgName, ismaCrypSId);
ismacrypEndSession(ismaCrypSId);
return MP4_INVALID_TRACK_ID;
}
id = MP4AddEncVideoTrack(mp4file,
Mp4TimeScale,
mp4FrameDuration,
w,
h,
icPp,
video_type);
} else {
id = MP4AddVideoTrack(mp4file,
Mp4TimeScale,
mp4FrameDuration,
w,
h,
video_type);
}
//printf("duration "U64" w %d h %d type %x\n", mp4FrameDuration, w, h, video_type);
if (MP4GetNumberOfTracks(mp4file, MP4_VIDEO_TRACK_TYPE) == 1) {
MP4SetVideoProfileLevel(mp4file, 0xfe); // undefined profile
}
if (id == MP4_INVALID_TRACK_ID) {
fprintf(stderr, "%s:Couldn't add video track %d", ProgName, vstream);
return MP4_INVALID_TRACK_ID;
}
uint8_t *buf;
uint32_t blen;
uint32_t frames = 1;
#if 0
printf("Processing %lu video frames\n", frames_max);
#endif
uint32_t refFrame = 1;
uint8_t frame_type;
while (mpeg2ps_get_video_frame(file,
vstream,
&buf,
&blen,
&frame_type,
TS_90000,
NULL)) {
if (buf[blen - 4] == 0 &&
buf[blen - 3] == 0 &&
buf[blen - 2] == 1) blen -= 4;
// encrypt the sample if neeed
if (doEncrypt) {
u_int8_t* encSampleData = NULL;
u_int32_t encSampleLen = 0;
if (ismacrypEncryptSampleAddHeader(ismaCrypSId, blen, buf,
&encSampleLen, &encSampleData) != 0) {
fprintf(stderr,
"%s: can't encrypt video sample and add header %u\n", ProgName, id);
}
MP4WriteSample(mp4file, id, encSampleData, encSampleLen,
mp4FrameDuration, 0,
frame_type == 1 ? true : false);
if (encSampleData != NULL) {
free(encSampleData);
}
} else {
MP4WriteSample(mp4file, id, buf, blen, mp4FrameDuration, 0,
frame_type == 1 ? true : false);
#if 0
printf("frame %d len %d duration "U64" ftype %d\n",
frames, blen, mp4FrameDuration, frame_type);
#endif
}
if (frame_type != 3) {
// I or P frame
MP4SetSampleRenderingOffset(mp4file, id, refFrame,
(frames - refFrame) * mp4FrameDuration);
refFrame = frames;
}
frames++;
#if 0
if ((frames % 100) == 0) printf("%d frames\n", frames);
#endif
}
// if encrypting, terminate the ismacryp session
if (doEncrypt) {
if (ismacrypEndSession(ismaCrypSId) != 0) {
fprintf(stderr,
"%s: could not end the ISMAcryp session\n",
ProgName);
return MP4_INVALID_TRACK_ID;
}
}
return id;
}
static MP4TrackId AudioCreate (MP4FileHandle mp4file,
mpeg2ps_t *file,
int astream,
bool doEncrypt)
{
uint16_t freq;
int type;
MP4TrackId id;
uint16_t samples_per_frame;
uint8_t *buf = NULL;
uint32_t blen = 0;
uint32_t frame_num = 1;
ismacryp_session_id_t ismaCrypSId;
mp4v2_ismacrypParams *icPp = (mp4v2_ismacrypParams *) malloc(sizeof(mp4v2_ismacrypParams));
MP4AV_Mp3Header hdr;
u_int8_t mpegVersion;
memset(icPp, 0, sizeof(mp4v2_ismacrypParams));
type = mpeg2ps_get_audio_stream_type(file, astream);
if (type != MPEG_AUDIO_MPEG) {
fprintf(stderr, "Unsupported audio format %d in audio stream %d\n",
type, astream);
return MP4_INVALID_TRACK_ID;
}
freq = mpeg2ps_get_audio_stream_sample_freq(file, astream);
if (mpeg2ps_get_audio_frame(file,
astream,
&buf,
&blen,
TS_90000,
NULL,
NULL) == false) {
fprintf(stderr, "No audio tracks in audio stream %d\n", astream);
return MP4_INVALID_TRACK_ID;
}
hdr = MP4AV_Mp3HeaderFromBytes(buf);
mpegVersion = MP4AV_Mp3GetHdrVersion(hdr);
samples_per_frame = MP4AV_Mp3GetHdrSamplingWindow(hdr);
u_int8_t audioType = MP4AV_Mp3ToMp4AudioType(mpegVersion);
if (audioType == MP4_INVALID_AUDIO_TYPE
|| samples_per_frame == 0) {
fprintf(stderr,
"%s: data in file doesn't appear to be valid audio\n",
ProgName);
return MP4_INVALID_TRACK_ID;
}
MP4Duration duration = (90000 * samples_per_frame) / freq;
if (doEncrypt) {
// initialize the ismacryp session
if (ismacrypInitSession(&ismaCrypSId,KeyTypeAudio) != 0) {
fprintf(stderr,
"%s: could not initialize the ISMAcryp session\n",
ProgName);
return MP4_INVALID_TRACK_ID;
}
if (ismacrypGetScheme(ismaCrypSId, &(icPp->scheme_type)) != ismacryp_rc_ok) {
fprintf(stderr, "%s: could not get ismacryp scheme type. sid %d\n",
ProgName, ismaCrypSId);
ismacrypEndSession(ismaCrypSId);
return MP4_INVALID_TRACK_ID;
}
if (ismacrypGetSchemeVersion(ismaCrypSId, &(icPp->scheme_version)) != ismacryp_rc_ok) {
fprintf(stderr, "%s: could not get ismacryp scheme ver. sid %d\n",
ProgName, ismaCrypSId);
ismacrypEndSession(ismaCrypSId);
return MP4_INVALID_TRACK_ID;
}
if (ismacrypGetKMSUri(ismaCrypSId, &(icPp->kms_uri)) != ismacryp_rc_ok) {
fprintf(stderr, "%s: could not get ismacryp kms uri. sid %d\n",
ProgName, ismaCrypSId);
CHECK_AND_FREE(icPp->kms_uri);
ismacrypEndSession(ismaCrypSId);
return MP4_INVALID_TRACK_ID;
}
if ( ismacrypGetSelectiveEncryption(ismaCrypSId, &(icPp->selective_enc)) != ismacryp_rc_ok ) {
fprintf(stderr, "%s: could not get ismacryp selec enc. sid %d\n",
ProgName, ismaCrypSId);
ismacrypEndSession(ismaCrypSId);
return MP4_INVALID_TRACK_ID;
}
if (ismacrypGetKeyIndicatorLength(ismaCrypSId, &(icPp->key_ind_len)) != ismacryp_rc_ok) {
fprintf(stderr, "%s: could not get ismacryp key ind len. sid %d\n",
ProgName, ismaCrypSId);
ismacrypEndSession(ismaCrypSId);
return MP4_INVALID_TRACK_ID;
}
if (ismacrypGetIVLength(ismaCrypSId, &(icPp->iv_len)) != ismacryp_rc_ok) {
fprintf(stderr, "%s: could not get ismacryp iv len. sid %d\n",
ProgName, ismaCrypSId);
ismacrypEndSession(ismaCrypSId);
return MP4_INVALID_TRACK_ID;
}
id = MP4AddEncAudioTrack(mp4file,
90000,
duration,
icPp,
audioType);
} else {
id = MP4AddAudioTrack(mp4file,
90000,
duration,
audioType);
}
if (id == MP4_INVALID_TRACK_ID) {
fprintf(stderr,
"%s: can't create audio track from stream %d\n",
ProgName, astream);
return MP4_INVALID_TRACK_ID;
}
if (MP4GetNumberOfTracks(mp4file, MP4_AUDIO_TRACK_TYPE) == 1) {
MP4SetAudioProfileLevel(mp4file, 0xFE);
}
do {
// encrypt if needed
if (doEncrypt) {
u_int8_t* encSampleData = NULL;
u_int32_t encSampleLen = 0;
if (ismacrypEncryptSampleAddHeader(ismaCrypSId, blen, buf,
&encSampleLen, &encSampleData) != 0) {
fprintf(stderr,
"%s: can't encrypt audio sample and add header %u\n", ProgName, id);
}
// now write the sample
if (!MP4WriteSample(mp4file, id, encSampleData, encSampleLen)) {
fprintf(stderr, "%s: can't write audio track %u, stream %d",
ProgName, frame_num, astream);
MP4DeleteTrack(mp4file, id);
return MP4_INVALID_TRACK_ID;
}
if (encSampleData != NULL) {
free(encSampleData);
}
}
// now write the sample
if (!MP4WriteSample(mp4file, id, buf, blen)) {
fprintf(stderr, "%s: can't write audio track %u, stream %d",
ProgName, frame_num, astream);
MP4DeleteTrack(mp4file, id);
return MP4_INVALID_TRACK_ID;
}
frame_num++;
#if 0
if ((frame_num % 100) == 0) printf("Audio frame %d\n", frame_num);
#endif
} while (mpeg2ps_get_audio_frame(file,
astream,
&buf,
&blen,
TS_90000,
NULL, NULL));
// if encrypting, terminate the ismacryp session
if (doEncrypt) {
if (ismacrypEndSession(ismaCrypSId) != 0) {
fprintf(stderr,
"%s: could not end the ISMAcryp session\n",
ProgName);
return MP4_INVALID_TRACK_ID;
}
}
return id;
}
MP4TrackId *MpegCreator (MP4FileHandle mp4file, const char *fname, bool doEncrypt)
{
mpeg2ps_t *file;
int video_streams, audio_streams;
int ix;
MP4TrackId *pTrackId;
file = mpeg2ps_init(fname);
video_streams = mpeg2ps_get_video_stream_count(file);
audio_streams = mpeg2ps_get_audio_stream_count(file);
pTrackId =
(MP4TrackId *)malloc(sizeof(MP4TrackId) * (audio_streams + video_streams + 1));
for (ix = 0; ix < video_streams + audio_streams + 1; ix++) {
pTrackId[ix] = MP4_INVALID_TRACK_ID;
}
for (ix = 0; ix < video_streams; ix++) {
pTrackId[ix] = VideoCreate(mp4file, file, ix, doEncrypt);
}
for (ix = 0; ix < audio_streams; ix++) {
pTrackId[ix + video_streams] = AudioCreate(mp4file, file, ix, doEncrypt);
}
return pTrackId;
}
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