ref: c2524103165a50966239c54720dcbd7c39e7846d
dir: /plugins/cooledit/Faad.cpp/
#include <windows.h>
#include <stdio.h> // FILE *
#include "filters.h" //CoolEdit
#include "faad.h"
#include "faac.h"
#include "aacinfo.h"
#include "..\..\..\faad2\common\mp4v2\mp4.h"
#define MAX_CHANNELS 2
typedef struct input_tag // any special vars associated with input file
{
//AAC
FILE *aacFile;
DWORD lSize;
DWORD tagsize;
DWORD bytes_read; // from file
DWORD bytes_consumed; // by faadDecDecode
long bytes_into_buffer;
unsigned char *buffer;
//MP4
MP4FileHandle mp4File;
MP4SampleId sampleId, numSamples;
int track;
DWORD type;
// GENERAL
faacDecHandle hDecoder;
faadAACInfo file_info;
__int32 len_ms;
WORD wChannels;
DWORD dwSamprate;
WORD wBitsPerSample;
char szName[256];
DWORD full_size; // size of decoded file needed to set the length of progress bar
bool IsAAC;
} MYINPUT;
static const char* mpeg4AudioNames[]=
{
"Raw PCM",
"AAC Main",
"AAC Low Complexity",
"AAC SSR",
"AAC LTP",
"Reserved",
"AAC Scalable",
"TwinVQ",
"CELP",
"HVXC",
"Reserved",
"Reserved",
"TTSI",
"Wavetable synthesis",
"General MIDI",
"Algorithmic Synthesis and Audio FX",
"Reserved"
};
int id3v2_tag(unsigned char *buffer)
{
if(StringComp((const char *)buffer, "ID3", 3) == 0)
{
unsigned long tagsize;
// high bit is not used
tagsize=(buffer[6] << 21) | (buffer[7] << 14) |
(buffer[8] << 7) | (buffer[9] << 0);
tagsize += 10;
return tagsize;
}
else
return 0;
}
int GetAACTrack(MP4FileHandle infile)
{
/* find AAC track */
int i, rc;
int numTracks = MP4GetNumberOfTracks(infile, NULL);
for (i = 0; i < numTracks; i++)
{
MP4TrackId trackId = MP4FindTrackId(infile, i, NULL);
const char* trackType = MP4GetTrackType(infile, trackId);
if (!strcmp(trackType, MP4_AUDIO_TRACK_TYPE))
{
unsigned char *buff = NULL;
unsigned __int32 buff_size = 0;
DWORD dummy1_32;
BYTE dummy2_8, dummy3_8, dummy4_8, dummy5_8, dummy6_8,
dummy7_8, dummy8_8;
MP4GetTrackESConfiguration(infile, trackId, &buff, &buff_size);
if (buff)
{
rc = AudioSpecificConfig(buff, &dummy1_32, &dummy2_8, &dummy3_8,
&dummy4_8, &dummy5_8, &dummy6_8, &dummy7_8, &dummy8_8);
free(buff);
if (rc < 0)
return -1;
return trackId;
}
}
}
/* can't decode this */
return -1;
}
// *********************************************************************************************
__declspec(dllexport) BOOL FAR PASCAL FilterUnderstandsFormat(LPSTR filename)
{
WORD len;
if((len=lstrlen(filename))>4 &&
(!strcmpi(filename+len-4,".aac") ||
!strcmpi(filename+len-4,".mp4")))
return TRUE;
return FALSE;
}
// *********************************************************************************************
__declspec(dllexport) long FAR PASCAL FilterGetFileSize(HANDLE hInput)
{
DWORD full_size;
if(hInput)
{
MYINPUT *mi;
mi=(MYINPUT *)GlobalLock(hInput);
full_size=mi->full_size;
GlobalUnlock(hInput);
}
return full_size;
}
// *********************************************************************************************
__declspec(dllexport) DWORD FAR PASCAL FilterOptionsString(HANDLE hInput, LPSTR szString)
{
char buf[20];
if(hInput)
{
MYINPUT *mi;
mi=(MYINPUT *)GlobalLock(hInput);
lstrcpy(szString,"");
if(mi->file_info.version == 2)
lstrcat(szString,"MPEG2 - ");
else
lstrcat(szString,"MPEG4 - ");
sprintf(buf,"%lu bps\n",mi->file_info.bitrate);
lstrcat(szString,buf);
if(mi->IsAAC) // AAC file --------------------------------------------------------------------
{
switch(mi->file_info.headertype)
{
case 0:
lstrcat(szString,"RAW\n");
return 0L;
case 1:
lstrcat(szString,"ADIF\n");
break;
case 2:
lstrcat(szString,"ADTS\n");
break;
}
switch(mi->file_info.object_type)
{
case MAIN:
lstrcat(szString,"Main");
break;
case LOW:
lstrcat(szString,"Low Complexity");
break;
case SSR:
lstrcat(szString,"SSR (unsupported)");
break;
case LTP:
lstrcat(szString,"Main LTP");
break;
}
}
else // MP4 file -----------------------------------------------------------------------------
lstrcat(szString,mpeg4AudioNames[mi->type]);
GlobalUnlock(hInput);
}
return 1;
}
// *********************************************************************************************
__declspec(dllexport) DWORD FAR PASCAL FilterGetFirstSpecialData(HANDLE hInput,
SPECIALDATA * psp)
{
return 0L;
}
// *********************************************************************************************
__declspec(dllexport) DWORD FAR PASCAL FilterGetNextSpecialData(HANDLE hInput, SPECIALDATA * psp)
{ return 0; // only has 1 special data! Otherwise we would use psp->hSpecialData
// as either a counter to know which item to retrieve next, or as a
// structure with other state information in it.
}
// *********************************************************************************************
__declspec(dllexport) void FAR PASCAL CloseFilterInput(HANDLE hInput)
{
if(hInput)
{
MYINPUT far *mi;
mi=(MYINPUT far *)GlobalLock(hInput);
// AAC file ---------------------------------------------------------------------
if(mi->aacFile)
fclose(mi->aacFile);
if(mi->buffer)
free(mi->buffer);
// MP4 file ---------------------------------------------------------------------
if(mi->mp4File)
MP4Close(mi->mp4File);
if(mi->hDecoder)
faacDecClose(mi->hDecoder);
GlobalUnlock(hInput);
GlobalFree(hInput);
}
}
// *********************************************************************************************
#define ERROR_OFI(msg) \
{ \
if(msg) \
MessageBox(0, msg, "FAAD plugin", MB_OK); \
if(hInput) \
{ \
GlobalUnlock(hInput); \
CloseFilterInput(hInput); \
} \
return 0; \
}
// return handle that will be passed in to close, and write routines
__declspec(dllexport) HANDLE FAR PASCAL OpenFilterInput(LPSTR lpstrFilename, long far *lSamprate, WORD far *wBitsPerSample, WORD far *wChannels, HWND hWnd, long far *lChunkSize)
{
HANDLE hInput;
MYINPUT *mi;
faacDecConfigurationPtr config;
DWORD samplerate, channels;
DWORD tmp;
BYTE BitsPerSample=16;
hInput=GlobalAlloc(GMEM_MOVEABLE|GMEM_SHARE|GMEM_ZEROINIT,sizeof(MYINPUT));
if(!hInput)
ERROR_OFI("Memory allocation error: hInput");
mi=(MYINPUT *)GlobalLock(hInput);
memset(mi,0,sizeof(MYINPUT));
mi->IsAAC=strcmpi(lpstrFilename+lstrlen(lpstrFilename)-4,".aac")==0;
if(!mi->IsAAC) // MP4 file ---------------------------------------------------------------------
{
MP4Duration length;
int track;
unsigned __int32 buffer_size;
unsigned long timeScale, sf;
BYTE dummy1, dummy2, dummy3, dummy4;
if(!(mi->mp4File = MP4Read(lpstrFilename, 0)))
ERROR_OFI("Error opening file");
if ((track = GetAACTrack(mi->mp4File)) < 0)
ERROR_OFI("Unable to find correct AAC sound track in the MP4 file");
if(!(mi->hDecoder=faacDecOpen()))
ERROR_OFI("Can't init library");
mi->buffer = NULL;
buffer_size = 0;
MP4GetTrackESConfiguration(mi->mp4File, track, &mi->buffer, &buffer_size);
if(!mi->buffer)
ERROR_OFI("MP4GetTrackESConfiguration");
AudioSpecificConfig(mi->buffer, &timeScale, &channels, &sf, &mi->type, &dummy1,
&dummy2, &dummy3, &dummy4);
if(memcmp(mpeg4AudioNames[mi->type],"AAC",3))
ERROR_OFI(0);
if(faacDecInit2(mi->hDecoder, mi->buffer, buffer_size, &samplerate, &channels) < 0)
ERROR_OFI("Error initializing decoder library");
free(mi->buffer);
length = MP4GetTrackDuration(mi->mp4File, track);
mi->len_ms=(DWORD) MP4ConvertFromTrackDuration(mi->mp4File, track, length, MP4_MSECS_TIME_SCALE);
mi->file_info.bitrate=(int)MP4GetTrackIntegerProperty(mi->mp4File, track, "mdia.minf.stbl.stsd.mp4a.esds.decConfigDescr.avgBitrate");
mi->numSamples = MP4GetTrackNumberOfSamples(mi->mp4File, track);
mi->track=track;
mi->sampleId=1;
}
else // AAC file ------------------------------------------------------------------------------
{
DWORD pos; // into the file. Needed to obtain length of file
DWORD read;
int *seek_table;
long tagsize;
if(!(mi->aacFile=fopen(lpstrFilename,"rb")))
ERROR_OFI("Error opening file");
pos=ftell(mi->aacFile);
fseek(mi->aacFile, 0, SEEK_END);
mi->lSize=ftell(mi->aacFile);
fseek(mi->aacFile, pos, SEEK_SET);
if(!(mi->buffer=(BYTE *)malloc(768*MAX_CHANNELS)))
ERROR_OFI("Memory allocation error");
memset(mi->buffer, 0, 768*MAX_CHANNELS);
if(mi->lSize<768*MAX_CHANNELS)
tmp=mi->lSize;
else
tmp=768*MAX_CHANNELS;
read=fread(mi->buffer, 1, tmp, mi->aacFile);
if(read==tmp)
{
mi->bytes_read=read;
mi->bytes_into_buffer=read;
}
else
ERROR_OFI("fread");
tagsize=id3v2_tag(mi->buffer);
if(tagsize)
{
memcpy(mi->buffer,mi->buffer+tagsize,768*MAX_CHANNELS - tagsize);
if(mi->bytes_read+tagsize<mi->lSize)
tmp=tagsize;
else
tmp=mi->lSize-mi->bytes_read;
read=fread(mi->buffer+mi->bytes_into_buffer, 1, tmp, mi->aacFile);
if(read==tmp)
{
mi->bytes_read+=read;
mi->bytes_into_buffer+=read;
}
else
ERROR_OFI("fread");
}
mi->tagsize=tagsize;
if(!(mi->hDecoder=faacDecOpen()))
ERROR_OFI("Can't open library");
if(seek_table=(int *)malloc(sizeof(int)*10800))
{
if(get_AAC_format(lpstrFilename, &(mi->file_info), seek_table)<0)
ERROR_OFI("Error retrieving information form input file");
free(seek_table);
}
if(mi->file_info.headertype==0)
{
config = faacDecGetCurrentConfiguration(mi->hDecoder);
config->defObjectType = mi->file_info.object_type;
config->defSampleRate = mi->file_info.sampling_rate;
config->outputFormat=FAAD_FMT_16BIT;
faacDecSetConfiguration(mi->hDecoder, config);
}
if((mi->bytes_consumed=faacDecInit(mi->hDecoder, mi->buffer, &samplerate, &channels)) < 0)
ERROR_OFI("Can't init library");
mi->bytes_into_buffer-=mi->bytes_consumed;
// if(mi->bytes_consumed>0) faacDecInit reports there is an header to skip
// this operation will be done in ReadFilterInput
mi->len_ms=(DWORD)((1000*((float)mi->lSize*8))/mi->file_info.bitrate);
} // END AAC file -----------------------------------------------------------------------------
config = faacDecGetCurrentConfiguration(mi->hDecoder);
switch(config->outputFormat)
{
case FAAD_FMT_16BIT:
BitsPerSample=16;
break;
case FAAD_FMT_24BIT:
BitsPerSample=24;
break;
case FAAD_FMT_32BIT:
BitsPerSample=32;
break;
default:
ERROR_OFI("Invalid format");
}
if(mi->len_ms)
mi->full_size=(DWORD)(mi->len_ms*((float)samplerate/1000)*channels*(BitsPerSample/8));
else
mi->full_size=mi->lSize; // corrupted stream?
*lSamprate=samplerate;
*wBitsPerSample=BitsPerSample;
*wChannels=(WORD)channels;
*lChunkSize=(BitsPerSample/8)*1024*channels;
mi->wChannels=(WORD)channels;
mi->dwSamprate=samplerate;
mi->wBitsPerSample=*wBitsPerSample;
strcpy(mi->szName,lpstrFilename);
GlobalUnlock(hInput);
return hInput;
}
// *********************************************************************************************
#define ERROR_RFI(msg) \
{ \
if(msg) \
MessageBox(0, msg, "FAAD plugin", MB_OK); \
if(hInput) \
GlobalUnlock(hInput); \
return 0; \
}
__declspec(dllexport) DWORD FAR PASCAL ReadFilterInput(HANDLE hInput, unsigned char far *bufout, long lBytes)
{
DWORD read,
tmp,
shorts_decoded=0;
unsigned char *buffer=0;
faacDecFrameInfo frameInfo;
char *sample_buffer=0;
MYINPUT *mi;
if(!hInput)
ERROR_RFI("Memory allocation error: hInput");
mi=(MYINPUT *)GlobalLock(hInput);
if(!mi->IsAAC) // MP4 file --------------------------------------------------------------------------
{
unsigned __int32 buffer_size=0;
int rc;
do
{
buffer=NULL;
if(mi->sampleId>=mi->numSamples)
ERROR_RFI(0);
rc=MP4ReadSample(mi->mp4File, mi->track, mi->sampleId++, &buffer, &buffer_size, NULL, NULL, NULL, NULL);
if(rc==0 || buffer==NULL)
{
if(buffer) free(buffer);
ERROR_RFI("MP4ReadSample")
}
sample_buffer=(char *)faacDecDecode(mi->hDecoder,&frameInfo,buffer);
shorts_decoded=frameInfo.samples*sizeof(short);
memcpy(bufout,sample_buffer,shorts_decoded);
if (buffer) free(buffer);
}while(!shorts_decoded && !frameInfo.error);
}
else // AAC file --------------------------------------------------------------------------
{
buffer=mi->buffer;
do
{
if(mi->bytes_consumed>0)
{
if(mi->bytes_into_buffer)
memcpy(buffer,buffer+mi->bytes_consumed,mi->bytes_into_buffer);
if(mi->bytes_read<mi->lSize)
{
if(mi->bytes_read+mi->bytes_consumed<mi->lSize)
tmp=mi->bytes_consumed;
else
tmp=mi->lSize-mi->bytes_read;
read=fread(buffer+mi->bytes_into_buffer, 1, tmp, mi->aacFile);
if(read==tmp)
{
mi->bytes_read+=read;
mi->bytes_into_buffer+=read;
}
}
else
if(mi->bytes_into_buffer)
memset(buffer+mi->bytes_into_buffer, 0, mi->bytes_consumed);
mi->bytes_consumed=0;
}
if(mi->bytes_into_buffer<1)
if(mi->bytes_read<mi->lSize)
ERROR_RFI("ReadFilterInput: buffer empty!")
else
return 0;
sample_buffer=(char *)faacDecDecode(mi->hDecoder,&frameInfo,buffer);
shorts_decoded=frameInfo.samples*sizeof(short);
memcpy(bufout,sample_buffer,shorts_decoded);
mi->bytes_consumed +=frameInfo.bytesconsumed;
mi->bytes_into_buffer-=mi->bytes_consumed;
}while(!shorts_decoded && !frameInfo.error);
} // END AAC file --------------------------------------------------------------------------
GlobalUnlock(hInput);
if(frameInfo.error)
ERROR_RFI(faacDecGetErrorMessage(frameInfo.error));
return shorts_decoded;
}