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yamdi.c
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yamdi.c
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/*
* yamdi.c
*
* Copyright (c) 2007-2008, Ingo Oppermann
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * Neither the name of the copyright holder nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
* -----------------------------------------------------------------------------
*
* Compile with:
* gcc yamdi.c -o yamdi -Wall -O2
*
*/
#include <sys/types.h>
#ifdef __MINGW32__
#include <windows.h>
#else
#include <sys/mman.h>
#endif
#include <sys/stat.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#define FLV_UI32(x) (int)(((x[0]) << 24) + ((x[1]) << 16) + ((x[2]) << 8) + (x[3]))
#define FLV_UI24(x) (int)(((x[0]) << 16) + ((x[1]) << 8) + (x[2]))
#define FLV_UI16(x) (int)(((x[0]) << 8) + (x[1]))
#define FLV_UI8(x) (int)((x))
#define FLV_AUDIODATA 8
#define FLV_VIDEODATA 9
#define FLV_SCRIPTDATAOBJECT 18
#define FLV_H263VIDEOPACKET 2
#define FLV_SCREENVIDEOPACKET 3
#define FLV_VP6VIDEOPACKET 4
#define FLV_VP6ALPHAVIDEOPACKET 5
#define FLV_SCREENV2VIDEOPACKET 6
#define YAMDI_VERSION "1.4"
#ifndef MAP_NOCORE
#define MAP_NOCORE 0
#endif
typedef struct {
int hasKeyframes;
int hasVideo;
int hasAudio;
int hasMetadata;
int hasCuePoints;
int canSeekToEnd;
double audiocodecid;
double audiosamplerate;
double audiodatarate;
double audiosamplesize;
double audiodelay;
int stereo;
double videocodecid;
double framerate;
double videodatarate;
double height;
double width;
double datasize;
double audiosize;
double videosize;
double filesize;
double lasttimestamp;
double lastvideoframetimestamp;
double lastkeyframetimestamp;
double lastkeyframelocation;
int keyframes;
double *filepositions;
double *times;
double duration;
char metadatacreator[256];
char creator[256];
int onmetadatalength;
int metadatasize;
size_t onlastsecondlength;
size_t lastsecondsize;
int hasLastSecond;
int lastsecondTagCount;
size_t onlastkeyframelength;
size_t lastkeyframesize;
int hasLastKeyframe;
} FLVMetaData_t;
FLVMetaData_t flvmetadata;
typedef struct {
unsigned char signature[3];
unsigned char version;
unsigned char flags;
unsigned char headersize[4];
} FLVFileHeader_t;
typedef struct {
unsigned char type;
unsigned char datasize[3];
unsigned char timestamp[3];
unsigned char timestamp_ex;
unsigned char streamid[3];
} FLVTag_t;
typedef struct {
unsigned char flags;
} FLVAudioData_t;
typedef struct {
unsigned char flags;
} FLVVideoData_t;
void initFLVMetaData(const char *creator, int lastsecond, int lastkeyframe);
size_t writeFLVMetaData(FILE *fp);
size_t writeFLVLastSecond(FILE *fp, double timestamp);
size_t writeFLVLastKeyframe(FILE *fp);
void readFLVFirstPass(char *flv, size_t streampos, size_t filesize);
void readFLVSecondPass(char *flv, size_t streampos, size_t filesize);
void readFLVH263VideoPacket(const unsigned char *h263);
void readFLVScreenVideoPacket(const unsigned char *sv);
void readFLVVP62VideoPacket(const unsigned char *vp62);
void readFLVVP62AlphaVideoPacket(const unsigned char *vp62a);
size_t writeFLVScriptDataValueArray(FILE *fp, const char *name, size_t len);
size_t writeFLVScriptDataECMAArray(FILE *fp, const char *name, size_t len);
size_t writeFLVScriptDataVariableArray(FILE *fp, const char *name);
size_t writeFLVScriptDataVariableArrayEnd(FILE *fp);
size_t writeFLVScriptDataValueString(FILE *fp, const char *name, const char *value);
size_t writeFLVScriptDataValueBool(FILE *fp, const char *name, int value);
size_t writeFLVScriptDataValueDouble(FILE *fp, const char *name, double value);
size_t writeFLVScriptDataObject(FILE *fp);
size_t writeFLVPreviousTagSize(FILE *fp, size_t datasize);
size_t writeFLVScriptDataString(FILE *fp, const char *s);
size_t writeFLVScriptDataLongString(FILE *fp, const char *s);
size_t writeFLVBool(FILE *fp, int value);
size_t writeFLVDouble(FILE *fp, double v);
void writeFLV(FILE *fp, char *flv, size_t streampos, size_t filesize);
void writeXMLMetadata(FILE *fp, const char *infile, const char *outfile);
void writeFLVHeader(FILE *fp);
void print_usage(void);
int main(int argc, char *argv[]) {
FILE *fp_infile = NULL, *fp_outfile = NULL, *fp_xmloutfile = NULL, *devnull;
#ifdef __MINGW32__
HANDLE fh_infile = NULL;
#endif
int c, lastsecond = 0, lastkeyframe = 0;
char *flv, *infile, *outfile, *xmloutfile, *creator;
unsigned int i;
size_t filesize = 0, streampos, metadatasize;
struct stat sb;
FLVFileHeader_t *flvfileheader;
opterr = 0;
infile = NULL;
outfile = NULL;
xmloutfile = NULL;
creator = NULL;
while((c = getopt(argc, argv, "i:o:x:c:lkh")) != -1) {
switch(c) {
case 'i':
if(infile == NULL) {
infile = optarg;
if(outfile != NULL) {
if(!strcmp(infile, outfile)) {
fprintf(stderr, "Input file and output file must not be the same.\n");
exit(1);
}
}
if(stat(infile, &sb) == -1) {
fprintf(stderr, "Couldn't stat on %s.\n", infile);
exit(1);
}
filesize = sb.st_size;
#ifndef __MINGW32__
fp_infile = fopen(infile, "rb");
#else
// Open infile with CreateFile() API
fh_infile = CreateFile(infile, GENERIC_READ, 0, NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);
// Meaningless type casting here. It is just used to pass the error checking codes.
fp_infile = (FILE *)fh_infile;
#endif
if(fp_infile == NULL) {
fprintf(stderr, "Couldn't open %s.\n", infile);
exit(1);
}
}
break;
case 'o':
if(outfile == NULL) {
outfile = optarg;
if(infile != NULL) {
if(!strcmp(infile, outfile)) {
fprintf(stderr, "Input file and output file must not be the same.\n");
exit(1);
}
}
if(strcmp(outfile, "-")) {
fp_outfile = fopen(outfile, "wb");
if(fp_outfile == NULL) {
fprintf(stderr, "Couldn't open %s.\n", outfile);
exit(1);
}
}
else
fp_outfile = stdout;
}
break;
case 'x':
if(xmloutfile == NULL) {
xmloutfile = optarg;
fp_xmloutfile = fopen(xmloutfile, "wb");
if(fp_xmloutfile == NULL) {
fprintf(stderr, "Couldn't open %s.\n", outfile);
exit(1);
}
}
break;
case 'c':
creator = optarg;
break;
case 'l':
lastsecond = 1;
break;
case 'k':
lastkeyframe = 1;
break;
case 'h':
print_usage();
exit(1);
break;
case ':':
fprintf(stderr, "The option -%c expects a parameter. -h for help.\n", optopt);
exit(1);
break;
case '?':
fprintf(stderr, "Unknown option: -%c. -h for help.\n", optopt);
exit(1);
break;
default:
print_usage();
exit(1);
break;
}
}
if(infile == NULL) {
fprintf(stderr, "Please provide an input file. -h for help.\n");
exit(1);
}
if(outfile == NULL && xmloutfile == NULL) {
fprintf(stderr, "Please provide at least one output file. -h for help.\n");
exit(1);
}
// mmap von infile erstellen
#ifndef __MINGW32__
flv = mmap(NULL, filesize, PROT_READ, MAP_NOCORE | MAP_PRIVATE, fileno(fp_infile), 0);
#else
HANDLE h = NULL;
h = CreateFileMapping(fh_infile, NULL, PAGE_READONLY | SEC_COMMIT, 0, filesize, NULL);
if(h == NULL) {
fprintf(stderr, "Couldn't create file mapping object %s. Error code: %d\n", infile, (int)GetLastError());
exit(1);
}
flv = MapViewOfFile(h, FILE_MAP_READ, 0, 0, filesize);
#endif
if(flv == NULL) {
fprintf(stderr, "Couldn't load %s.\n", infile);
exit(1);
}
if(strncmp(flv, "FLV", 3)) {
fprintf(stderr, "The input file is not a FLV.\n");
exit(1);
}
// Metadata initialisieren
initFLVMetaData(creator, lastsecond, lastkeyframe);
flvfileheader = (FLVFileHeader_t *)flv;
// Die Position des 1. Tags im FLV bestimmen (Header + PrevTagSize0)
streampos = FLV_UI32(flvfileheader->headersize) + 4;
// Das FLV einlesen und Informationen fuer die Metatags extrahieren
readFLVFirstPass(flv, streampos, filesize);
#ifndef __MINGW32__
devnull = fopen("/dev/null", "wb");
#else
devnull = fopen("nul", "wb");
#endif
if(devnull == NULL) {
fprintf(stderr, "Couldn't open NULL device.\n");
exit(1);
}
// Die Groessen berechnen
metadatasize = writeFLVMetaData(devnull);
flvmetadata.lastsecondsize = writeFLVLastSecond(devnull, 0.0);
flvmetadata.lastkeyframesize = writeFLVLastKeyframe(devnull); // Not fully implemented, i.e. has no effect
fclose(devnull);
// Falls es Keyframes hat, muss ein 2. Durchgang fuer den Keyframeindex gemacht werden
if(flvmetadata.hasKeyframes == 1) {
readFLVSecondPass(flv, streampos, filesize);
// Die Filepositions korrigieren
for(i = 0; i < flvmetadata.keyframes; i++)
flvmetadata.filepositions[i] += (double)(sizeof(FLVFileHeader_t) + 4 + metadatasize);
flvmetadata.lastkeyframelocation = flvmetadata.filepositions[flvmetadata.keyframes - 1];
}
// filesize = FLVFileHeader + PreviousTagSize0 + MetadataSize + DataSize
flvmetadata.filesize = (double)(sizeof(FLVFileHeader_t) + 4 + metadatasize + flvmetadata.datasize);
if(flvmetadata.hasLastSecond == 1)
flvmetadata.filesize += (double)flvmetadata.lastsecondsize;
if(outfile != NULL)
writeFLV(fp_outfile, flv, streampos, filesize);
if(xmloutfile != NULL)
writeXMLMetadata(fp_xmloutfile, infile, outfile);
return 0;
}
void writeFLV(FILE *fp, char *flv, size_t streampos, size_t filesize) {
int tagcount;
double currenttimestamp;
size_t datasize;
FLVTag_t *flvtag;
writeFLVHeader(fp);
writeFLVMetaData(fp);
tagcount = 0;
for(;;) {
if(streampos + sizeof(FLVTag_t) > filesize)
break;
flvtag = (FLVTag_t *)&flv[streampos];
// Die Groesse des Tags (Header + Data) + PreviousTagSize
datasize = sizeof(FLVTag_t) + FLV_UI24(flvtag->datasize) + 4;
if(streampos + datasize > filesize)
break;
if(flvtag->type == FLV_VIDEODATA || flvtag->type == FLV_AUDIODATA) {
fwrite(&flv[streampos], datasize, 1, fp);
if(flvtag->type == FLV_VIDEODATA && flvmetadata.hasLastSecond == 1) {
tagcount++;
if(tagcount == flvmetadata.lastsecondTagCount) {
currenttimestamp = (double)((flvtag->timestamp_ex << 24) + (flvtag->timestamp[0] << 16) + (flvtag->timestamp[1] << 8) + flvtag->timestamp[2]) / 1000.0;
writeFLVLastSecond(fp, currenttimestamp);
}
}
}
streampos += datasize;
}
return;
}
void writeXMLMetadata(FILE *fp, const char *infile, const char *outfile) {
int i;
char *hasit;
fprintf(fp, "<?xml version='1.0' encoding='UTF-8'?>\n");
fprintf(fp, "<fileset>\n");
if(outfile != NULL)
fprintf(fp, "<flv name=\"%s\">\n", outfile);
else
fprintf(fp, "<flv name=\"%s\">\n", infile);
hasit = (flvmetadata.hasKeyframes > 0) ? "true" : "false";
fprintf(fp, "<hasKeyframes>%s</hasKeyframes>\n", hasit);
hasit = (flvmetadata.hasVideo > 0) ? "true" : "false";
fprintf(fp, "<hasVideo>%s</hasVideo>\n", hasit);
hasit = (flvmetadata.hasAudio > 0) ? "true" : "false";
fprintf(fp, "<hasAudio>%s</hasAudio>\n", hasit);
hasit = (flvmetadata.hasMetadata > 0) ? "true" : "false";
fprintf(fp, "<hasMetadata>%s</hasMetadata>\n", hasit);
hasit = (flvmetadata.hasCuePoints > 0) ? "true" : "false";
fprintf(fp, "<hasCuePoints>%s</hasCuePoints>\n", hasit);
hasit = (flvmetadata.canSeekToEnd > 0) ? "true" : "false";
fprintf(fp, "<canSeekToEnd>%s</canSeekToEnd>\n", hasit);
fprintf(fp, "<audiocodecid>%i</audiocodecid>\n", (int)flvmetadata.audiocodecid);
fprintf(fp, "<audiosamplerate>%i</audiosamplerate>\n", (int)flvmetadata.audiosamplerate);
fprintf(fp, "<audiodatarate>%i</audiodatarate>\n", (int)flvmetadata.audiodatarate);
fprintf(fp, "<audiosamplesize>%i</audiosamplesize>\n", (int)flvmetadata.audiosamplesize);
fprintf(fp, "<audiodelay>%.2f</audiodelay>\n", flvmetadata.audiodelay);
hasit = (flvmetadata.stereo > 0) ? "true" : "false";
fprintf(fp, "<stereo>%s</stereo>\n", hasit);
fprintf(fp, "<videocodecid>%i</videocodecid>\n", (int)flvmetadata.videocodecid);
fprintf(fp, "<framerate>%.2f</framerate>\n", flvmetadata.framerate);
fprintf(fp, "<videodatarate>%i</videodatarate>\n", (int)flvmetadata.videodatarate);
fprintf(fp, "<height>%i</height>\n", (int)flvmetadata.height);
fprintf(fp, "<width>%i</width>\n", (int)flvmetadata.width);
fprintf(fp, "<datasize>%i</datasize>\n", (int)flvmetadata.datasize);
fprintf(fp, "<audiosize>%i</audiosize>\n", (int)flvmetadata.audiosize);
fprintf(fp, "<videosize>%i</videosize>\n", (int)flvmetadata.videosize);
fprintf(fp, "<filesize>%i</filesize>\n", (int)flvmetadata.filesize);
fprintf(fp, "<lasttimestamp>%.2f</lasttimestamp>\n", flvmetadata.lasttimestamp);
fprintf(fp, "<lastvideoframetimestamp>%.2f</lastvideoframetimestamp>\n", flvmetadata.lastvideoframetimestamp);
fprintf(fp, "<lastkeyframetimestamp>%.2f</lastkeyframetimestamp>\n", flvmetadata.lastkeyframetimestamp);
fprintf(fp, "<lastkeyframelocation>%i</lastkeyframelocation>\n", (int)flvmetadata.lastkeyframelocation);
fprintf(fp, "<keyframes>\n");
fprintf(fp, "<times>\n");
for(i = 0; i < flvmetadata.keyframes; ++i)
fprintf(fp, "<value id=\"%i\">%.2f</value>\n", i, flvmetadata.times[i]);
fprintf(fp, "</times>\n");
fprintf(fp, "<filepositions>\n");
for(i = 0; i < flvmetadata.keyframes; ++i)
fprintf(fp, "<value id=\"%i\">%i</value>\n", i, (int)flvmetadata.filepositions[i]);
fprintf(fp, "</filepositions>\n");
fprintf(fp, "</keyframes>\n");
fprintf(fp, "<duration>%.2f</duration>\n", flvmetadata.duration);
fprintf(fp, "</flv>\n");
fprintf(fp, "</fileset>\n");
return;
}
void writeFLVHeader(FILE *fp) {
char *t;
size_t size;
FLVFileHeader_t flvheader;
t = (char *)&flvheader;
memset(t, 0, sizeof(FLVFileHeader_t));
flvheader.signature[0] = 'F';
flvheader.signature[1] = 'L';
flvheader.signature[2] = 'V';
flvheader.version = 1;
if(flvmetadata.hasAudio == 1)
flvheader.flags |= 0x4;
if(flvmetadata.hasVideo == 1)
flvheader.flags |= 0x1;
size = sizeof(FLVFileHeader_t);
flvheader.headersize[0] = ((size >> 24) & 0xff);
flvheader.headersize[1] = ((size >> 16) & 0xff);
flvheader.headersize[2] = ((size >> 8) & 0xff);
flvheader.headersize[3] = (size & 0xff);
fwrite(t, sizeof(FLVFileHeader_t), 1, fp);
writeFLVPreviousTagSize(fp, 0);
return;
}
void readFLVSecondPass(char *flv, size_t streampos, size_t filesize) {
int i, tagcount, afterlastsecond;
double lastsecond, currenttimestamp;
size_t datasize, datapos;
FLVTag_t *flvtag;
FLVVideoData_t *flvvideo;
if(flvmetadata.keyframes == 0)
return;
i = 0;
datapos = 0;
tagcount = 0;
afterlastsecond = 0;
lastsecond = flvmetadata.lastvideoframetimestamp - 1.0;
for(;;) {
if(streampos + sizeof(FLVTag_t) > filesize)
break;
flvtag = (FLVTag_t *)&flv[streampos];
// TagHeader + TagData + PreviousTagSize
datasize = sizeof(FLVTag_t) + FLV_UI24(flvtag->datasize) + 4;
if(streampos + datasize > filesize)
break;
if(flvtag->type == FLV_VIDEODATA) {
flvvideo = (FLVVideoData_t *)&flv[streampos + sizeof(FLVTag_t)];
// Keyframes
if(((flvvideo->flags >> 4) & 1) == 1) {
flvmetadata.filepositions[i] = (double)datapos;
flvmetadata.times[i] = (double)((flvtag->timestamp_ex << 24) + (flvtag->timestamp[0] << 16) + (flvtag->timestamp[1] << 8) + flvtag->timestamp[2]) / 1000.0;
i++;
}
}
streampos += datasize;
if(flvtag->type == FLV_VIDEODATA || flvtag->type == FLV_AUDIODATA) {
datapos += datasize;
if(flvtag->type == FLV_VIDEODATA && flvmetadata.hasLastSecond == 1 && afterlastsecond == 0 && lastsecond > 1.0) {
tagcount++;
currenttimestamp = (double)((flvtag->timestamp_ex << 24) + (flvtag->timestamp[0] << 16) + (flvtag->timestamp[1] << 8) + flvtag->timestamp[2]) / 1000.0;
if(currenttimestamp > lastsecond) {
datapos += flvmetadata.lastsecondsize;
flvmetadata.lastsecondTagCount = tagcount;
afterlastsecond = 1;
}
}
}
}
return;
}
void readFLVFirstPass(char *flv, size_t streampos, size_t filesize) {
size_t datasize, videosize = 0, audiosize = 0;
size_t videotags = 0, audiotags = 0;
FLVTag_t *flvtag;
FLVAudioData_t *flvaudio;
FLVVideoData_t *flvvideo;
for(;;) {
if(streampos + sizeof(FLVTag_t) > filesize)
break;
flvtag = (FLVTag_t *)&flv[streampos];
// TagHeader + TagData + PreviousTagSize
datasize = sizeof(FLVTag_t) + FLV_UI24(flvtag->datasize) + 4;
if(streampos + datasize > filesize)
break;
if(flvtag->type == FLV_AUDIODATA) {
flvmetadata.datasize += (double)datasize;
// datasize - PreviousTagSize
flvmetadata.audiosize += (double)(datasize - 4);
audiosize += FLV_UI24(flvtag->datasize);
audiotags++;
if(flvmetadata.hasAudio == 0) {
flvaudio = (FLVAudioData_t *)&flv[streampos + sizeof(FLVTag_t)];
// Sound Codec
flvmetadata.audiocodecid = (double)((flvaudio->flags >> 4) & 0xf);
// Sample Rate
switch(((flvaudio->flags >> 2) & 0x3)) {
case 0:
flvmetadata.audiosamplerate = 5500.0;
break;
case 1:
flvmetadata.audiosamplerate = 11000.0;
break;
case 2:
flvmetadata.audiosamplerate = 22000.0;
break;
case 3:
flvmetadata.audiosamplerate = 44100.0;
break;
default:
break;
}
// Sample Size
switch(((flvaudio->flags >> 1) & 0x1)) {
case 0:
flvmetadata.audiosamplesize = 8.0;
break;
case 1:
flvmetadata.audiosamplesize = 16.0;
break;
default:
break;
}
// Stereo
flvmetadata.stereo = (flvaudio->flags & 0x1);
flvmetadata.hasAudio = 1;
}
}
else if(flvtag->type == FLV_VIDEODATA) {
flvmetadata.datasize += (double)datasize;
// datasize - PreviousTagSize
flvmetadata.videosize += (double)(datasize - 4);
videosize += FLV_UI24(flvtag->datasize);
videotags++;
flvvideo = (FLVVideoData_t *)&flv[streampos + sizeof(FLVTag_t)];
if(flvmetadata.hasVideo == 0) {
// Video Codec
flvmetadata.videocodecid = (double)(flvvideo->flags & 0xf);
flvmetadata.hasVideo = 1;
switch(flvvideo->flags & 0xf) {
case FLV_H263VIDEOPACKET:
readFLVH263VideoPacket((unsigned char *)&flv[streampos + sizeof(FLVTag_t) + sizeof(FLVVideoData_t)]);
break;
case FLV_SCREENVIDEOPACKET:
readFLVScreenVideoPacket((unsigned char *)&flv[streampos + sizeof(FLVTag_t) + sizeof(FLVVideoData_t)]);
break;
case FLV_VP6VIDEOPACKET:
readFLVVP62VideoPacket((unsigned char *)&flv[streampos + sizeof(FLVTag_t) + sizeof(FLVVideoData_t)]);
break;
case FLV_VP6ALPHAVIDEOPACKET:
readFLVVP62AlphaVideoPacket((unsigned char *)&flv[streampos + sizeof(FLVTag_t) + sizeof(FLVVideoData_t)]);
break;
case FLV_SCREENV2VIDEOPACKET:
readFLVScreenVideoPacket((unsigned char *)&flv[streampos + sizeof(FLVTag_t) + sizeof(FLVVideoData_t)]);
break;
default:
break;
}
}
// keyframes
if(((flvvideo->flags >> 4) & 1) == 1) {
flvmetadata.canSeekToEnd = 1;
flvmetadata.keyframes++;
flvmetadata.lastkeyframetimestamp = (double)((flvtag->timestamp_ex << 24) + (flvtag->timestamp[0] << 16) + (flvtag->timestamp[1] << 8) + flvtag->timestamp[2]) / 1000.0;
}
else
flvmetadata.canSeekToEnd = 0;
flvmetadata.lastvideoframetimestamp = (double)((flvtag->timestamp_ex << 24) + (flvtag->timestamp[0] << 16) + (flvtag->timestamp[1] << 8) + flvtag->timestamp[2]) / 1000.0;
}
flvmetadata.lasttimestamp = (double)((flvtag->timestamp_ex << 24) + (flvtag->timestamp[0] << 16) + (flvtag->timestamp[1] << 8) + flvtag->timestamp[2]) / 1000.0;
streampos += datasize;
}
flvmetadata.duration = flvmetadata.lasttimestamp;
if(flvmetadata.keyframes != 0)
flvmetadata.hasKeyframes = 1;
if(flvmetadata.hasKeyframes == 1) {
flvmetadata.filepositions = (double *)calloc(flvmetadata.keyframes, sizeof(double));
flvmetadata.times = (double *)calloc(flvmetadata.keyframes, sizeof(double));
if(flvmetadata.filepositions == NULL || flvmetadata.times == NULL) {
fprintf(stderr, "Not enough memory for the keyframe index.\n");
exit(1);
}
}
// Framerate
if(videotags != 0)
flvmetadata.framerate = (double)videotags / flvmetadata.duration;
// Videodatarate (kb/s)
if(videosize != 0)
flvmetadata.videodatarate = (double)(videosize * 8) / 1024.0 / flvmetadata.duration;
// Audiodatarate (kb/s)
if(audiosize != 0)
flvmetadata.audiodatarate = (double)(audiosize * 8) / 1024.0 / flvmetadata.duration;
return;
}
void readFLVH263VideoPacket(const unsigned char *h263) {
int startcode, picturesize;
// 8bit |pppppppp|pppppppp|pvvvvvrr|rrrrrrss|swwwwwww|whhhhhhh|h
// 16bit |pppppppp|pppppppp|pvvvvvrr|rrrrrrss|swwwwwww|wwwwwwww|whhhhhhh|hhhhhhhh|h
startcode = FLV_UI24(h263) >> 7;
if(startcode != 1)
return;
picturesize = ((h263[3] & 0x3) << 1) + ((h263[4] >> 7) & 0x1);
switch(picturesize) {
case 0: // Custom 8bit
flvmetadata.width = (double)(((h263[4] & 0x7f) << 1) + ((h263[5] >> 7) & 0x1));
flvmetadata.height = (double)(((h263[5] & 0x7f) << 1) + ((h263[6] >> 7) & 0x1));
break;
case 1: // Custom 16bit
flvmetadata.width = (double)(((h263[4] & 0x7f) << 9) + (h263[5] << 1) + ((h263[6] >> 7) & 0x1));
flvmetadata.height = (double)(((h263[6] & 0x7f) << 9) + (h263[7] << 1) + ((h263[8] >> 7) & 0x1));
break;
case 2: // CIF
flvmetadata.width = 352.0;
flvmetadata.height = 288.0;
break;
case 3: // QCIF
flvmetadata.width = 176.0;
flvmetadata.height = 144.0;
break;
case 4: // SQCIF
flvmetadata.width = 128.0;
flvmetadata.height = 96.0;
break;
case 5:
flvmetadata.width = 320.0;
flvmetadata.height = 240.0;
break;
case 6:
flvmetadata.width = 160.0;
flvmetadata.height = 120.0;
break;
default:
break;
}
return;
}
void readFLVScreenVideoPacket(const unsigned char *sv) {
// |1111wwww|wwwwwwww|2222hhhh|hhhhhhhh|
flvmetadata.width = (double)(((sv[0] & 0xf) << 8) + sv[1]);
flvmetadata.height = (double)(((sv[2] & 0xf) << 8) + sv[3]);
return;
}
void readFLVVP62VideoPacket(const unsigned char *vp62) {
flvmetadata.width = (double)(vp62[4] * 16 - (vp62[0] >> 4));
flvmetadata.height = (double)(vp62[3] * 16 - (vp62[0] & 0x0f));
return;
}
void readFLVVP62AlphaVideoPacket(const unsigned char *vp62a) {
flvmetadata.width = (double)(vp62a[7] * 16 - (vp62a[0] >> 4));
flvmetadata.height = (double)(vp62a[6] * 16 - (vp62a[0] & 0x0f));
return;
}
void initFLVMetaData(const char *creator, int lastsecond, int lastkeyframe) {
char *t;
t = (char *)&flvmetadata;
memset(t, 0, sizeof(FLVMetaData_t));
flvmetadata.hasMetadata = 1;
flvmetadata.hasLastSecond = lastsecond;
flvmetadata.hasLastKeyframe = lastkeyframe;
if(creator != NULL)
strncpy(flvmetadata.creator, creator, sizeof(flvmetadata.creator));
strncpy(flvmetadata.metadatacreator, "Yet Another Metadata Injector for FLV - Version " YAMDI_VERSION "\0", sizeof(flvmetadata.metadatacreator));
return;
}
size_t writeFLVMetaData(FILE *fp) {
FLVTag_t flvtag;
int i;
size_t length = 0, datasize = 0;
char *t;
if(fp == NULL)
return -1;
// Zuerst ein ScriptDataObject Tag schreiben
// Alles auf 0 setzen
t = (char *)&flvtag;
memset(t, 0, sizeof(FLVTag_t));
// Tag Type
flvtag.type = FLV_SCRIPTDATAOBJECT;
flvtag.datasize[0] = ((flvmetadata.metadatasize >> 16) & 0xff);
flvtag.datasize[1] = ((flvmetadata.metadatasize >> 8) & 0xff);
flvtag.datasize[2] = (flvmetadata.metadatasize & 0xff);
metadatapass:
datasize = 0;
datasize += fwrite(t, 1, sizeof(FLVTag_t), fp);
// ScriptDataObject
datasize += writeFLVScriptDataObject(fp);
// onMetaData
datasize += writeFLVScriptDataECMAArray(fp, "onMetaData", flvmetadata.onmetadatalength);
// creator
if(strlen(flvmetadata.creator) != 0) {
datasize += writeFLVScriptDataValueString(fp, "creator", flvmetadata.creator);
length++;
}
// metadatacreator
datasize += writeFLVScriptDataValueString(fp, "metadatacreator", flvmetadata.metadatacreator);
length++;
// hasKeyframes
datasize += writeFLVScriptDataValueBool(fp, "hasKeyframes", flvmetadata.hasKeyframes);
length++;
// hasVideo
datasize += writeFLVScriptDataValueBool(fp, "hasVideo", flvmetadata.hasVideo);
length++;
// hasAudio
datasize += writeFLVScriptDataValueBool(fp, "hasAudio", flvmetadata.hasAudio);
length++;
// hasMetadata
datasize += writeFLVScriptDataValueBool(fp, "hasMetadata", flvmetadata.hasMetadata);
length++;
// canSeekToEnd
datasize += writeFLVScriptDataValueBool(fp, "canSeekToEnd", flvmetadata.canSeekToEnd);
length++;
// duration
datasize += writeFLVScriptDataValueDouble(fp, "duration", flvmetadata.duration);
length++;
// datasize
datasize += writeFLVScriptDataValueDouble(fp, "datasize", flvmetadata.datasize);
length++;
if(flvmetadata.hasVideo == 1) {
// videosize
datasize += writeFLVScriptDataValueDouble(fp, "videosize", flvmetadata.videosize);
length++;
// videocodecid
datasize += writeFLVScriptDataValueDouble(fp, "videocodecid", flvmetadata.videocodecid);
length++;
// width
if(flvmetadata.width != 0.0) {
datasize += writeFLVScriptDataValueDouble(fp, "width", flvmetadata.width);
length++;
}
// height
if(flvmetadata.height != 0.0) {
datasize += writeFLVScriptDataValueDouble(fp, "height", flvmetadata.height);
length++;
}
// framerate
datasize += writeFLVScriptDataValueDouble(fp, "framerate", flvmetadata.framerate);
length++;
// videodatarate
datasize += writeFLVScriptDataValueDouble(fp, "videodatarate", flvmetadata.videodatarate);
length++;
}
if(flvmetadata.hasAudio == 1) {
// audiosize
datasize += writeFLVScriptDataValueDouble(fp, "audiosize", flvmetadata.audiosize);
length++;
// audiocodecid
datasize += writeFLVScriptDataValueDouble(fp, "audiocodecid", flvmetadata.audiocodecid);
length++;
// audiosamplerate
datasize += writeFLVScriptDataValueDouble(fp, "audiosamplerate", flvmetadata.audiosamplerate);
length++;
// audiosamplesize
datasize += writeFLVScriptDataValueDouble(fp, "audiosamplesize", flvmetadata.audiosamplesize);
length++;
// stereo
datasize += writeFLVScriptDataValueBool(fp, "stereo", flvmetadata.stereo);
length++;
// audiodatarate
datasize += writeFLVScriptDataValueDouble(fp, "audiodatarate", flvmetadata.audiodatarate);
length++;
}
// filesize
datasize += writeFLVScriptDataValueDouble(fp, "filesize", flvmetadata.filesize);
length++;
// lasttimestamp
datasize += writeFLVScriptDataValueDouble(fp, "lasttimestamp", flvmetadata.lasttimestamp);
length++;
if(flvmetadata.hasKeyframes == 1) {
// lastkeyframetimestamp
datasize += writeFLVScriptDataValueDouble(fp, "lastkeyframetimestamp", flvmetadata.lastkeyframetimestamp);
length++;
// lastkeyframelocation
datasize += writeFLVScriptDataValueDouble(fp, "lastkeyframelocation", flvmetadata.lastkeyframelocation);
length++;
// keyframes
datasize += writeFLVScriptDataVariableArray(fp, "keyframes");
length++;
// filepositions
datasize += writeFLVScriptDataValueArray(fp, "filepositions", flvmetadata.keyframes);
for(i = 0; i < flvmetadata.keyframes; i++)
datasize += writeFLVScriptDataValueDouble(fp, NULL, flvmetadata.filepositions[i]);
// times
datasize += writeFLVScriptDataValueArray(fp, "times", flvmetadata.keyframes);
for(i = 0; i < flvmetadata.keyframes; i++)
datasize += writeFLVScriptDataValueDouble(fp, NULL, flvmetadata.times[i]);
// Variable Array End Object
datasize += writeFLVScriptDataVariableArrayEnd(fp);
}
if(flvmetadata.onmetadatalength == 0) {
flvmetadata.onmetadatalength = length;
goto metadatapass;