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unify the wave/wave64 parser.

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git-svn-id: svn://svn.rockbox.org/rockbox/trunk@25106 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Yoshihisa Uchida 2010-03-10 10:55:01 +00:00
parent 56069476be
commit 207a84a381
1 changed files with 181 additions and 192 deletions
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373
apps/metadata/wave.c
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@ -31,6 +31,9 @@
#include "metadata_parsers.h" #include "metadata_parsers.h"
#include "logf.h" #include "logf.h"
/* Wave(RIFF)/Wave64 format */
# define AV_WL32(p, d) do { \ # define AV_WL32(p, d) do { \
((uint8_t*)(p))[0] = (d); \ ((uint8_t*)(p))[0] = (d); \
((uint8_t*)(p))[1] = (d)>>8; \ ((uint8_t*)(p))[1] = (d)>>8; \
@ -42,14 +45,36 @@
((uint8_t*)(p))[1] = (d)>>8; \ ((uint8_t*)(p))[1] = (d)>>8; \
} while(0) } while(0)
/* Wave(RIFF)/Wave64 format */ enum {
RIFF_CHUNK = 0,
WAVE_CHUNK,
FMT_CHUNK,
FACT_CHUNK,
DATA_CHUNK,
NUM_CHUNKS,
};
/* Wave chunk names */
static const unsigned char *wave_chunknames[NUM_CHUNKS] =
{
[RIFF_CHUNK] = "RIFF",
[WAVE_CHUNK] = "WAVE",
[FMT_CHUNK] = "fmt ",
[FACT_CHUNK] = "fact",
[DATA_CHUNK] = "data",
};
/* Wave64 GUIDs */ /* Wave64 GUIDs */
#define WAVE64_GUID_RIFF "riff\x2e\x91\xcf\x11\xa5\xd6\x28\xdb\x04\xc1\x00\x00" static const unsigned char *wave64_chunknames[NUM_CHUNKS] =
#define WAVE64_GUID_WAVE "wave\xf3\xac\xd3\x11\x8c\xd1\x00\xc0\x4f\x8e\xdb\x8a" {
#define WAVE64_GUID_FMT "fmt \xf3\xac\xd3\x11\x8c\xd1\x00\xc0\x4f\x8e\xdb\x8a" [RIFF_CHUNK] = "riff\x2e\x91\xcf\x11\xa5\xd6\x28\xdb\x04\xc1\x00\x00",
#define WAVE64_GUID_DATA "data\xf3\xac\xd3\x11\x8c\xd1\x00\xc0\x4f\x8e\xdb\x8a" [WAVE_CHUNK] = "wave\xf3\xac\xd3\x11\x8c\xd1\x00\xc0\x4f\x8e\xdb\x8a",
[FMT_CHUNK] = "fmt \xf3\xac\xd3\x11\x8c\xd1\x00\xc0\x4f\x8e\xdb\x8a",
[FACT_CHUNK] = "fact\xf3\xac\xd3\x11\x8c\xd1\x00\xc0\x4f\x8e\xdb\x8a",
[DATA_CHUNK] = "data\xf3\xac\xd3\x11\x8c\xd1\x00\xc0\x4f\x8e\xdb\x8a",
};
/* support formats */
enum enum
{ {
WAVE_FORMAT_PCM = 0x0001, /* Microsoft PCM Format */ WAVE_FORMAT_PCM = 0x0001, /* Microsoft PCM Format */
@ -65,21 +90,21 @@ enum
IBM_FORMAT_ALAW = 0x0102, /* same as WAVE_FORMAT_ALAW */ IBM_FORMAT_ALAW = 0x0102, /* same as WAVE_FORMAT_ALAW */
WAVE_FORMAT_ATRAC3 = 0x0270, /* Atrac3 stream */ WAVE_FORMAT_ATRAC3 = 0x0270, /* Atrac3 stream */
WAVE_FORMAT_SWF_ADPCM = 0x5346, /* Adobe SWF ADPCM */ WAVE_FORMAT_SWF_ADPCM = 0x5346, /* Adobe SWF ADPCM */
WAVE_FORMAT_EXTENSIBLE = 0xFFFE,
}; };
struct wave_fmt { struct wave_fmt {
unsigned int formattag; unsigned int formattag;
unsigned long channels; unsigned int channels;
unsigned int blockalign; unsigned int blockalign;
unsigned long bitspersample; unsigned int bitspersample;
unsigned int samplesperblock; unsigned int samplesperblock;
uint32_t totalsamples;
uint64_t numbytes; uint64_t numbytes;
}; };
static unsigned long get_totalsamples(struct wave_fmt *fmt, struct mp3entry* id3) static void set_totalsamples(struct wave_fmt *fmt, struct mp3entry* id3)
{ {
unsigned long totalsamples = 0;
switch (fmt->formattag) switch (fmt->formattag)
{ {
case WAVE_FORMAT_PCM: case WAVE_FORMAT_PCM:
@ -88,39 +113,45 @@ static unsigned long get_totalsamples(struct wave_fmt *fmt, struct mp3entry* id3
case WAVE_FORMAT_MULAW: case WAVE_FORMAT_MULAW:
case IBM_FORMAT_ALAW: case IBM_FORMAT_ALAW:
case IBM_FORMAT_MULAW: case IBM_FORMAT_MULAW:
totalsamples = if (fmt->bitspersample != 0 && fmt->channels != 0)
fmt->numbytes / ((fmt->bitspersample >> 3) * fmt->channels); fmt->totalsamples = fmt->numbytes / ((fmt->bitspersample >> 3) * fmt->channels);
break; break;
case WAVE_FORMAT_ADPCM: case WAVE_FORMAT_ADPCM:
case WAVE_FORMAT_DVI_ADPCM: case WAVE_FORMAT_DVI_ADPCM:
case WAVE_FORMAT_XBOX_ADPCM: case WAVE_FORMAT_XBOX_ADPCM:
totalsamples = (fmt->numbytes / fmt->blockalign) * fmt->samplesperblock; if (fmt->blockalign != 0)
fmt->totalsamples = (fmt->numbytes / fmt->blockalign) * fmt->samplesperblock;
break; break;
case WAVE_FORMAT_YAMAHA_ADPCM: case WAVE_FORMAT_YAMAHA_ADPCM:
if (fmt->samplesperblock == 0) if (fmt->blockalign != 0 && fmt->channels != 0)
{ {
if (fmt->blockalign == ((id3->frequency / 60) + 4) * fmt->channels) if (fmt->samplesperblock == 0)
fmt->samplesperblock = id3->frequency / 30; {
else if (fmt->blockalign == ((id3->frequency / 60) + 4) * fmt->channels)
fmt->samplesperblock = (fmt->blockalign << 1) / fmt->channels; fmt->samplesperblock = id3->frequency / 30;
else
fmt->samplesperblock = (fmt->blockalign << 1) / fmt->channels;
}
fmt->totalsamples = (fmt->numbytes / fmt->blockalign) * fmt->samplesperblock;
} }
totalsamples = (fmt->numbytes / fmt->blockalign) * fmt->samplesperblock;
break; break;
case WAVE_FORMAT_DIALOGIC_OKI_ADPCM: case WAVE_FORMAT_DIALOGIC_OKI_ADPCM:
totalsamples = fmt->numbytes << 1; fmt->totalsamples = fmt->numbytes << 1;
break; break;
case WAVE_FORMAT_SWF_ADPCM: case WAVE_FORMAT_SWF_ADPCM:
if (fmt->samplesperblock == 0) if (fmt->blockalign != 0 && fmt->bitspersample != 0 && fmt->channels != 0)
fmt->samplesperblock = (((fmt->blockalign << 3) - 2) / fmt->channels - 22) {
/ fmt->bitspersample; if (fmt->samplesperblock == 0)
fmt->samplesperblock = (((fmt->blockalign << 3) - 2) / fmt->channels - 22)
/ fmt->bitspersample;
totalsamples = (fmt->numbytes / fmt->blockalign) * fmt->samplesperblock; fmt->totalsamples = (fmt->numbytes / fmt->blockalign) * fmt->samplesperblock;
}
break; break;
default: default:
totalsamples = 0; fmt->totalsamples = 0;
break; break;
} }
return totalsamples;
} }
static void parse_riff_format(unsigned char* buf, int fmtsize, struct wave_fmt *fmt, static void parse_riff_format(unsigned char* buf, int fmtsize, struct wave_fmt *fmt,
@ -138,33 +169,65 @@ static void parse_riff_format(unsigned char* buf, int fmtsize, struct wave_fmt *
fmt->blockalign = buf[12] | (buf[13] << 8); fmt->blockalign = buf[12] | (buf[13] << 8);
/* wBitsPerSample */ /* wBitsPerSample */
fmt->bitspersample = buf[14] | (buf[15] << 8); fmt->bitspersample = buf[14] | (buf[15] << 8);
if (fmtsize > 19)
if (fmt->formattag != WAVE_FORMAT_EXTENSIBLE)
{ {
/* wSamplesPerBlock */ if (fmtsize > 19)
fmt->samplesperblock = buf[18] | (buf[19] << 8); {
/* wSamplesPerBlock */
fmt->samplesperblock = buf[18] | (buf[19] << 8);
}
}
else if (fmtsize > 25)
{
/* wValidBitsPerSample */
fmt->bitspersample = buf[18] | (buf[19] << 8);
/* SubFormat */
fmt->formattag = buf[24] | (buf[25] << 8);
}
/* Check for ATRAC3 stream */
if (fmt->formattag == WAVE_FORMAT_ATRAC3)
{
int jsflag = 0;
if(id3->bitrate == 66 || id3->bitrate == 94)
jsflag = 1;
id3->extradata_size = 14;
id3->channels = 2;
id3->codectype = AFMT_OMA_ATRAC3;
/* Store the extradata for the codec */
AV_WL16(&id3->id3v2buf[0], 1); // always 1
AV_WL32(&id3->id3v2buf[2], id3->frequency);// samples rate
AV_WL16(&id3->id3v2buf[6], jsflag); // coding mode
AV_WL16(&id3->id3v2buf[8], jsflag); // coding mode
AV_WL16(&id3->id3v2buf[10], 1); // always 1
AV_WL16(&id3->id3v2buf[12], 0); // always 0
} }
} }
bool get_wave_metadata(int fd, struct mp3entry* id3) bool read_header(int fd, struct mp3entry* id3, const unsigned char **chunknames, bool is_64)
{ {
/* Use the trackname part of the id3 structure as a temporary buffer */ /* Use the temporary buffer */
unsigned char* buf = (unsigned char *)id3->path; unsigned char* buf = (unsigned char *)id3->path;
struct wave_fmt fmt; struct wave_fmt fmt;
unsigned long totalsamples = 0;
unsigned long offset = 0; unsigned int namelen = (is_64)? 16 : 4;
int read_bytes; unsigned int sizelen = (is_64)? 8 : 4;
int i; unsigned int len = namelen + sizelen;
uint64_t chunksize;
uint64_t offset = len + namelen;
int read_data;
memset(&fmt, 0, sizeof(struct wave_fmt)); memset(&fmt, 0, sizeof(struct wave_fmt));
/* get RIFF chunk header */ /* get RIFF chunk header */
if ((lseek(fd, 0, SEEK_SET) < 0) || (read(fd, buf, 12) < 12)) lseek(fd, 0, SEEK_SET);
{ read(fd, buf, offset);
return false;
}
offset += 12;
if ((memcmp(buf, "RIFF", 4) != 0) || (memcmp(&buf[8], "WAVE", 4) != 0)) if ((memcmp(buf, chunknames[RIFF_CHUNK], namelen) != 0) ||
(memcmp(buf + len, chunknames[WAVE_CHUNK], namelen) != 0))
{ {
DEBUGF("metadata error: missing riff header.\n"); DEBUGF("metadata error: missing riff header.\n");
return false; return false;
@ -174,180 +237,106 @@ bool get_wave_metadata(int fd, struct mp3entry* id3)
while (true) while (true)
{ {
/* get chunk header */ /* get chunk header */
if (read(fd, buf, 8) < 8) if (read(fd, buf, len) <= 0)
{
DEBUGF("metadata error: read error or missing 'data' chunk.\n");
return false; return false;
offset += 8;
/* chunkSize */
i = get_long_le(&buf[4]);
if (memcmp(buf, "fmt ", 4) == 0)
{
/* get rest of chunk */
if (i < 16)
return false;
read_bytes = (i > 19)? 20 : 16;
if (read(fd, buf, read_bytes) != read_bytes)
return false;
offset += read_bytes;
i -= read_bytes;
parse_riff_format(buf, read_bytes, &fmt, id3);
/* Check for ATRAC3 stream */
if (fmt.formattag == WAVE_FORMAT_ATRAC3)
{
int jsflag = 0;
if(id3->bitrate == 66 || id3->bitrate == 94)
jsflag = 1;
id3->extradata_size = 14;
id3->channels = 2;
id3->codectype = AFMT_OMA_ATRAC3;
/* Store the extradata for the codec */
AV_WL16(&id3->id3v2buf[0], 1); // always 1
AV_WL32(&id3->id3v2buf[2], id3->frequency); // samples rate
AV_WL16(&id3->id3v2buf[6], jsflag); // coding mode
AV_WL16(&id3->id3v2buf[8], jsflag); // coding mode
AV_WL16(&id3->id3v2buf[10], 1); // always 1
AV_WL16(&id3->id3v2buf[12], 0); // always 0
}
} }
else if (memcmp(buf, "data", 4) == 0)
offset += len;
/* get chunk size (when the header is wave64, chunksize includes GUID and data length) */
chunksize = (is_64) ? get_uint64_le(buf + namelen) - len :
get_long_le(buf + namelen);
if (memcmp(buf, chunknames[DATA_CHUNK], namelen) == 0)
{ {
fmt.numbytes = i; DEBUGF("find 'data' chunk\n");
fmt.numbytes = chunksize;
if (fmt.formattag == WAVE_FORMAT_ATRAC3) if (fmt.formattag == WAVE_FORMAT_ATRAC3)
id3->first_frame_offset = offset; id3->first_frame_offset = offset;
break; break;
} }
else if (memcmp(buf, "fact", 4) == 0)
/* padded to next chunk */
chunksize += ((is_64)? ((1 + ~chunksize) & 0x07) : (chunksize & 1));
offset += chunksize;
read_data = 0;
if (memcmp(buf, chunknames[FMT_CHUNK], namelen) == 0)
{ {
/* dwSampleLength */ DEBUGF("find 'fmt ' chunk\n");
if (i >= 4)
if (chunksize < 16)
{ {
/* get rest of chunk */ DEBUGF("metadata error: 'fmt ' chunk is too small: %d\n", (int)chunksize);
if (read(fd, buf, 4) < 4) return false;
return false; }
offset += 4;
i -= 4; /* get and parse format */
totalsamples = get_long_le(buf); read_data = (chunksize > 25)? 26 : chunksize;
read(fd, buf, read_data);
parse_riff_format(buf, read_data, &fmt, id3);
}
else if (memcmp(buf, chunknames[FACT_CHUNK], namelen) == 0)
{
DEBUGF("find 'fact' chunk\n");
/* dwSampleLength */
if (chunksize >= sizelen)
{
/* get totalsamples */
read_data = sizelen;
read(fd, buf, read_data);
fmt.totalsamples = (is_64)? get_uint64_le(buf) : get_long_le(buf);
} }
} }
/* seek to next chunk (even chunk sizes must be padded) */ lseek(fd, chunksize - read_data, SEEK_CUR);
i += (i & 0x01);
if(lseek(fd, i, SEEK_CUR) < 0)
return false;
offset += i;
} }
if ((fmt.numbytes == 0) || (fmt.channels == 0) || (fmt.blockalign == 0)) if (fmt.totalsamples == 0)
{ set_totalsamples(&fmt, id3);
DEBUGF("metadata error: numbytes, channels, or blockalign is 0.\n");
return false;
}
if (totalsamples == 0) id3->vbr = false; /* All Wave/Wave64 files are CBR */
{
totalsamples = get_totalsamples(&fmt, id3);
}
id3->vbr = false; /* All WAV files are CBR */
id3->filesize = filesize(fd); id3->filesize = filesize(fd);
/* Calculate track length (in ms) and estimate the bitrate (in kbit/s) */ /* Calculate track length (in ms) and estimate the bitrate (in kbit/s) */
if(id3->codectype != AFMT_OMA_ATRAC3) if(fmt.formattag != AFMT_OMA_ATRAC3)
id3->length = ((int64_t) totalsamples * 1000) / id3->frequency; {
if (id3->frequency != 0)
id3->length = ((int64_t) fmt.totalsamples * 1000) / id3->frequency;
}
else else
id3->length = ((id3->filesize - id3->first_frame_offset) * 8) / id3->bitrate; {
if (id3->bitrate != 0)
id3->length = ((id3->filesize - id3->first_frame_offset) * 8) / id3->bitrate;
}
/* output header/id3 info (for debug) */
DEBUGF("%s header info ----\n", (is_64)? "wave64" : "wave");
DEBUGF(" format: %04x\n", (int)fmt.formattag);
DEBUGF(" channels: %u\n", fmt.channels);
DEBUGF(" blockalign: %u\n", fmt.blockalign);
DEBUGF(" bitspersample: %u\n", fmt.bitspersample);
DEBUGF(" samplesperblock: %u\n", fmt.samplesperblock);
DEBUGF(" totalsamples: %u\n", (unsigned int)fmt.totalsamples);
DEBUGF(" numbytes; %u\n", (unsigned int)fmt.numbytes);
DEBUGF("id3 info ----\n");
DEBUGF(" frquency: %u\n", (unsigned int)id3->frequency);
DEBUGF(" bitrate: %d\n", id3->bitrate);
DEBUGF(" length: %u\n", (unsigned int)id3->length);
return true; return true;
} }
bool get_wave_metadata(int fd, struct mp3entry* id3)
{
return read_header(fd, id3, (const unsigned char **)&wave_chunknames, false);
}
bool get_wave64_metadata(int fd, struct mp3entry* id3) bool get_wave64_metadata(int fd, struct mp3entry* id3)
{ {
/* Use the trackname part of the id3 structure as a temporary buffer */ return read_header(fd, id3, (const unsigned char **)&wave64_chunknames, true);
unsigned char* buf = (unsigned char *)id3->path;
struct wave_fmt fmt;
unsigned long totalsamples = 0;
int read_bytes;
uint64_t i;
memset(&fmt, 0, sizeof(struct wave_fmt));
/* get RIFF chunk header */
if ((lseek(fd, 0, SEEK_SET) < 0) || (read(fd, buf, 40) < 40))
return false;
if ((memcmp(buf , WAVE64_GUID_RIFF, 16) != 0)||
(memcmp(buf+24, WAVE64_GUID_WAVE, 16) != 0))
{
DEBUGF("metadata error: does not wave64 file\n");
return false;
}
/* iterate over WAVE chunks until 'data' chunk */
while (true)
{
/* get chunk header */
if (read(fd, buf, 24) < 24)
return false;
/* chunkSize (excludes GUID and size length) */
i = get_uint64_le(buf + 16) - 24;
if (memcmp(buf, WAVE64_GUID_FMT, 16) == 0)
{
DEBUGF("find 'fmt ' chunk\n");
if (i < 16)
return false;
read_bytes = (i > 16)? 24 : 16;
if ((int)i < read_bytes)
i = 0;
else
i -= read_bytes;
/* get rest of chunk */
if (read(fd, buf, read_bytes) < read_bytes)
return false;
parse_riff_format(buf, read_bytes, &fmt, id3);
}
else if (memcmp(buf, WAVE64_GUID_DATA, 16) == 0)
{
DEBUGF("find 'data' chunk\n");
fmt.numbytes = i;
break;
}
/* seek to next chunk (8byte bound) */
i += (1 + ~i) & 0x07;
if(lseek(fd, i, SEEK_CUR) < 0)
return false;
}
if ((fmt.numbytes == 0) || (fmt.channels == 0) || (fmt.blockalign == 0))
{
DEBUGF("metadata error: numbytes, channels, or blockalign is 0\n");
return false;
}
if (totalsamples == 0)
{
totalsamples = get_totalsamples(&fmt, id3);
}
id3->vbr = false; /* All Wave64 files are CBR */
id3->filesize = filesize(fd);
/* Calculate track length [ms] */
id3->length = ((int64_t) totalsamples * 1000) / id3->frequency;
return true;
} }