From 207a84a3810a0a8916dc4adca7c8b3a9a4bfb929 Mon Sep 17 00:00:00 2001 From: Yoshihisa Uchida Date: Wed, 10 Mar 2010 10:55:01 +0000 Subject: unify the wave/wave64 parser. git-svn-id: svn://svn.rockbox.org/rockbox/trunk@25106 a1c6a512-1295-4272-9138-f99709370657 --- apps/metadata/wave.c | 363 +++++++++++++++++++++++++-------------------------- 1 file changed, 176 insertions(+), 187 deletions(-) (limited to 'apps') diff --git a/apps/metadata/wave.c b/apps/metadata/wave.c index c9291cbe54..c6bf4bdf53 100644 --- a/apps/metadata/wave.c +++ b/apps/metadata/wave.c @@ -31,6 +31,9 @@ #include "metadata_parsers.h" #include "logf.h" +/* Wave(RIFF)/Wave64 format */ + + # define AV_WL32(p, d) do { \ ((uint8_t*)(p))[0] = (d); \ ((uint8_t*)(p))[1] = (d)>>8; \ @@ -42,14 +45,36 @@ ((uint8_t*)(p))[1] = (d)>>8; \ } 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 */ -#define WAVE64_GUID_RIFF "riff\x2e\x91\xcf\x11\xa5\xd6\x28\xdb\x04\xc1\x00\x00" -#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" -#define WAVE64_GUID_DATA "data\xf3\xac\xd3\x11\x8c\xd1\x00\xc0\x4f\x8e\xdb\x8a" +static const unsigned char *wave64_chunknames[NUM_CHUNKS] = +{ + [RIFF_CHUNK] = "riff\x2e\x91\xcf\x11\xa5\xd6\x28\xdb\x04\xc1\x00\x00", + [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 { WAVE_FORMAT_PCM = 0x0001, /* Microsoft PCM Format */ @@ -65,21 +90,21 @@ enum IBM_FORMAT_ALAW = 0x0102, /* same as WAVE_FORMAT_ALAW */ WAVE_FORMAT_ATRAC3 = 0x0270, /* Atrac3 stream */ WAVE_FORMAT_SWF_ADPCM = 0x5346, /* Adobe SWF ADPCM */ + WAVE_FORMAT_EXTENSIBLE = 0xFFFE, }; struct wave_fmt { unsigned int formattag; - unsigned long channels; + unsigned int channels; unsigned int blockalign; - unsigned long bitspersample; + unsigned int bitspersample; unsigned int samplesperblock; + uint32_t totalsamples; 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) { 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 IBM_FORMAT_ALAW: case IBM_FORMAT_MULAW: - totalsamples = - fmt->numbytes / ((fmt->bitspersample >> 3) * fmt->channels); + if (fmt->bitspersample != 0 && fmt->channels != 0) + fmt->totalsamples = fmt->numbytes / ((fmt->bitspersample >> 3) * fmt->channels); break; case WAVE_FORMAT_ADPCM: case WAVE_FORMAT_DVI_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; 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) - fmt->samplesperblock = id3->frequency / 30; - else - fmt->samplesperblock = (fmt->blockalign << 1) / fmt->channels; + if (fmt->samplesperblock == 0) + { + if (fmt->blockalign == ((id3->frequency / 60) + 4) * 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; case WAVE_FORMAT_DIALOGIC_OKI_ADPCM: - totalsamples = fmt->numbytes << 1; + fmt->totalsamples = fmt->numbytes << 1; break; case WAVE_FORMAT_SWF_ADPCM: - if (fmt->samplesperblock == 0) - fmt->samplesperblock = (((fmt->blockalign << 3) - 2) / fmt->channels - 22) - / fmt->bitspersample; + if (fmt->blockalign != 0 && fmt->bitspersample != 0 && fmt->channels != 0) + { + 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; default: - totalsamples = 0; + fmt->totalsamples = 0; break; } - return totalsamples; } 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); /* wBitsPerSample */ fmt->bitspersample = buf[14] | (buf[15] << 8); - if (fmtsize > 19) + + if (fmt->formattag != WAVE_FORMAT_EXTENSIBLE) { - /* wSamplesPerBlock */ - fmt->samplesperblock = buf[18] | (buf[19] << 8); + if (fmtsize > 19) + { + /* 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; + struct wave_fmt fmt; - unsigned long totalsamples = 0; - unsigned long offset = 0; - int read_bytes; - int i; + + unsigned int namelen = (is_64)? 16 : 4; + unsigned int sizelen = (is_64)? 8 : 4; + unsigned int len = namelen + sizelen; + uint64_t chunksize; + uint64_t offset = len + namelen; + int read_data; memset(&fmt, 0, sizeof(struct wave_fmt)); /* get RIFF chunk header */ - if ((lseek(fd, 0, SEEK_SET) < 0) || (read(fd, buf, 12) < 12)) - { - return false; - } - offset += 12; + lseek(fd, 0, SEEK_SET); + read(fd, buf, offset); - 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"); return false; @@ -174,180 +237,106 @@ bool get_wave_metadata(int fd, struct mp3entry* id3) while (true) { /* 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; - offset += 8; - - /* chunkSize */ - i = get_long_le(&buf[4]); + } - if (memcmp(buf, "fmt ", 4) == 0) - { - /* get rest of chunk */ - if (i < 16) - return false; + offset += len; - read_bytes = (i > 19)? 20 : 16; + /* 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 (read(fd, buf, read_bytes) != read_bytes) - return false; + if (memcmp(buf, chunknames[DATA_CHUNK], namelen) == 0) + { + DEBUGF("find 'data' chunk\n"); + fmt.numbytes = chunksize; + if (fmt.formattag == WAVE_FORMAT_ATRAC3) + id3->first_frame_offset = offset; + break; + } - offset += read_bytes; - i -= read_bytes; + /* padded to next chunk */ + chunksize += ((is_64)? ((1 + ~chunksize) & 0x07) : (chunksize & 1)); + offset += chunksize; - parse_riff_format(buf, read_bytes, &fmt, id3); + read_data = 0; + if (memcmp(buf, chunknames[FMT_CHUNK], namelen) == 0) + { + DEBUGF("find 'fmt ' chunk\n"); - /* Check for ATRAC3 stream */ - if (fmt.formattag == WAVE_FORMAT_ATRAC3) + if (chunksize < 16) { - 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 + DEBUGF("metadata error: 'fmt ' chunk is too small: %d\n", (int)chunksize); + return false; } + + /* get and parse format */ + read_data = (chunksize > 25)? 26 : chunksize; + + read(fd, buf, read_data); + parse_riff_format(buf, read_data, &fmt, id3); } - else if (memcmp(buf, "data", 4) == 0) - { - fmt.numbytes = i; - if (fmt.formattag == WAVE_FORMAT_ATRAC3) - id3->first_frame_offset = offset; - break; - } - else if (memcmp(buf, "fact", 4) == 0) + else if (memcmp(buf, chunknames[FACT_CHUNK], namelen) == 0) { + DEBUGF("find 'fact' chunk\n"); + /* dwSampleLength */ - if (i >= 4) + if (chunksize >= sizelen) { - /* get rest of chunk */ - if (read(fd, buf, 4) < 4) - return false; - offset += 4; - i -= 4; - totalsamples = get_long_le(buf); + /* 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) */ - i += (i & 0x01); - - if(lseek(fd, i, SEEK_CUR) < 0) - return false; - offset += i; + lseek(fd, chunksize - read_data, SEEK_CUR); } - if ((fmt.numbytes == 0) || (fmt.channels == 0) || (fmt.blockalign == 0)) - { - DEBUGF("metadata error: numbytes, channels, or blockalign is 0.\n"); - return false; - } + if (fmt.totalsamples == 0) + set_totalsamples(&fmt, id3); - if (totalsamples == 0) - { - totalsamples = get_totalsamples(&fmt, id3); - } - - id3->vbr = false; /* All WAV files are CBR */ + id3->vbr = false; /* All Wave/Wave64 files are CBR */ id3->filesize = filesize(fd); /* Calculate track length (in ms) and estimate the bitrate (in kbit/s) */ - if(id3->codectype != AFMT_OMA_ATRAC3) - id3->length = ((int64_t) totalsamples * 1000) / id3->frequency; - else - id3->length = ((id3->filesize - id3->first_frame_offset) * 8) / id3->bitrate; - - return true; -} - -bool get_wave64_metadata(int fd, struct mp3entry* id3) -{ - /* Use the trackname part of the id3 structure as a temporary buffer */ - 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) + if(fmt.formattag != AFMT_OMA_ATRAC3) { - /* 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 (id3->frequency != 0) + id3->length = ((int64_t) fmt.totalsamples * 1000) / id3->frequency; } - - if ((fmt.numbytes == 0) || (fmt.channels == 0) || (fmt.blockalign == 0)) + else { - DEBUGF("metadata error: numbytes, channels, or blockalign is 0\n"); - return false; + if (id3->bitrate != 0) + id3->length = ((id3->filesize - id3->first_frame_offset) * 8) / id3->bitrate; } - if (totalsamples == 0) - { - totalsamples = get_totalsamples(&fmt, id3); - } + /* 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); - id3->vbr = false; /* All Wave64 files are CBR */ - id3->filesize = filesize(fd); + return true; +} - /* Calculate track length [ms] */ - id3->length = ((int64_t) totalsamples * 1000) / id3->frequency; +bool get_wave_metadata(int fd, struct mp3entry* id3) +{ + return read_header(fd, id3, (const unsigned char **)&wave_chunknames, false); +} - return true; +bool get_wave64_metadata(int fd, struct mp3entry* id3) +{ + return read_header(fd, id3, (const unsigned char **)&wave64_chunknames, true); } -- cgit v1.2.3