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/* |
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* Copyright (c) 2008-2014 Alexandre Ratchov <alex@caoua.org> |
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* |
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* Permission to use, copy, modify, and distribute this software for any |
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* purpose with or without fee is hereby granted, provided that the above |
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* copyright notice and this permission notice appear in all copies. |
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* |
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES |
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF |
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR |
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN |
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF |
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
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*/ |
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#include <fcntl.h> |
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#include <string.h> |
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#include <unistd.h> |
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#include "afile.h" |
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#include "utils.h" |
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typedef struct { |
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unsigned char ld[4]; |
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} le32_t; |
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typedef struct { |
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unsigned char lw[2]; |
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} le16_t; |
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typedef struct { |
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unsigned char bd[4]; |
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} be32_t; |
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typedef struct { |
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unsigned char bw[2]; |
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} be16_t; |
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struct wav_riff { |
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char id[4]; |
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le32_t size; |
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char type[4]; |
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}; |
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struct wav_chunk { |
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char id[4]; |
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le32_t size; |
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}; |
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struct wav_fmt { |
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#define WAV_FMT_PCM 1 |
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#define WAV_FMT_FLOAT 3 |
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#define WAV_FMT_ALAW 6 |
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#define WAV_FMT_ULAW 7 |
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#define WAV_FMT_EXT 0xfffe |
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le16_t fmt; |
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le16_t nch; |
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le32_t rate; |
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le32_t byterate; |
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le16_t blkalign; |
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le16_t bits; |
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#define WAV_FMT_SIZE 16 |
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#define WAV_FMT_EXT_SIZE (16 + 24) |
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le16_t extsize; |
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le16_t valbits; |
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le32_t chanmask; |
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le16_t extfmt; |
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char guid[14]; |
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}; |
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struct wav_hdr { |
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struct wav_riff riff; /* 00..11 */ |
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struct wav_chunk fmt_hdr; /* 12..20 */ |
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struct wav_fmt fmt; |
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struct wav_chunk data_hdr; |
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}; |
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struct aiff_form { |
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char id[4]; |
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be32_t size; |
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char type[4]; |
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}; |
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struct aiff_chunk { |
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char id[4]; |
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be32_t size; |
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}; |
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struct aiff_comm { |
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struct aiff_commbase { |
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be16_t nch; |
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be32_t nfr; |
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be16_t bits; |
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/* rate in 80-bit floating point */ |
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be16_t rate_ex; |
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be32_t rate_hi; |
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be32_t rate_lo; |
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} base; |
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char comp_id[4]; |
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/* followed by stuff we don't care about */ |
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}; |
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struct aiff_data { |
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be32_t offs; |
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be32_t blksz; |
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}; |
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struct aiff_hdr { |
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struct aiff_form form; |
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struct aiff_chunk comm_hdr; |
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struct aiff_commbase comm; |
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struct aiff_chunk data_hdr; |
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struct aiff_data data; |
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}; |
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struct au_hdr { |
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char id[4]; |
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be32_t offs; |
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be32_t size; |
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#define AU_FMT_PCM8 2 |
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#define AU_FMT_PCM16 3 |
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#define AU_FMT_PCM24 4 |
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#define AU_FMT_PCM32 5 |
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#define AU_FMT_FLOAT 6 |
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#define AU_FMT_ALAW 0x1b |
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#define AU_FMT_ULAW 1 |
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be32_t fmt; |
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be32_t rate; |
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be32_t nch; |
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char desc[8]; |
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/* followed by optional desc[] continuation */ |
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}; |
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char wav_id_riff[4] = {'R', 'I', 'F', 'F'}; |
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char wav_id_wave[4] = {'W', 'A', 'V', 'E'}; |
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char wav_id_data[4] = {'d', 'a', 't', 'a'}; |
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char wav_id_fmt[4] = {'f', 'm', 't', ' '}; |
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char wav_guid[14] = { |
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0x00, 0x00, 0x00, 0x00, |
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0x10, 0x00, 0x80, 0x00, |
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0x00, 0xAA, 0x00, 0x38, |
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0x9B, 0x71 |
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}; |
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char aiff_id_form[4] = {'F', 'O', 'R', 'M'}; |
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char aiff_id_aiff[4] = {'A', 'I', 'F', 'F'}; |
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char aiff_id_aifc[4] = {'A', 'I', 'F', 'C'}; |
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char aiff_id_data[4] = {'S', 'S', 'N', 'D'}; |
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char aiff_id_comm[4] = {'C', 'O', 'M', 'M'}; |
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char aiff_id_none[4] = {'N', 'O', 'N', 'E'}; |
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char aiff_id_fl32[4] = {'f', 'l', '3', '2'}; |
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char aiff_id_ulaw[4] = {'u', 'l', 'a', 'w'}; |
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char aiff_id_alaw[4] = {'a', 'l', 'a', 'w'}; |
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char au_id[4] = {'.', 's', 'n', 'd'}; |
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static inline unsigned int |
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le16_get(le16_t *p) |
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{ |
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return p->lw[0] | p->lw[1] << 8; |
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} |
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static inline void |
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le16_set(le16_t *p, unsigned int v) |
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{ |
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p->lw[0] = v; |
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p->lw[1] = v >> 8; |
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} |
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static inline unsigned int |
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le32_get(le32_t *p) |
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{ |
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return p->ld[0] | |
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p->ld[1] << 8 | |
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p->ld[2] << 16 | |
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p->ld[3] << 24; |
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} |
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static inline void |
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le32_set(le32_t *p, unsigned int v) |
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{ |
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p->ld[0] = v; |
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p->ld[1] = v >> 8; |
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p->ld[2] = v >> 16; |
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p->ld[3] = v >> 24; |
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} |
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static inline unsigned int |
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be16_get(be16_t *p) |
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{ |
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return p->bw[1] | p->bw[0] << 8; |
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} |
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static inline void |
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be16_set(be16_t *p, unsigned int v) |
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{ |
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p->bw[1] = v; |
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p->bw[0] = v >> 8; |
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} |
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static inline unsigned int |
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be32_get(be32_t *p) |
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{ |
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return p->bd[3] | |
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p->bd[2] << 8 | |
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p->bd[1] << 16 | |
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p->bd[0] << 24; |
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} |
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static inline void |
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be32_set(be32_t *p, unsigned int v) |
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{ |
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p->bd[3] = v; |
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p->bd[2] = v >> 8; |
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p->bd[1] = v >> 16; |
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p->bd[0] = v >> 24; |
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} |
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static int |
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afile_readhdr(struct afile *f, void *addr, size_t size) |
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{ |
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if (lseek(f->fd, 0, SEEK_SET) < 0) { |
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log_puts(f->path); |
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log_puts(": failed to seek to beginning of file\n"); |
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return 0; |
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} |
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if (read(f->fd, addr, size) != size) { |
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log_puts(f->path); |
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log_puts(": failed to read header\n"); |
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return 0; |
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} |
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return 1; |
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} |
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static int |
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afile_writehdr(struct afile *f, void *addr, size_t size) |
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{ |
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if (lseek(f->fd, 0, SEEK_SET) < 0) { |
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log_puts(f->path); |
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log_puts(": failed to seek back to header\n"); |
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return 0; |
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} |
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if (write(f->fd, addr, size) != size) { |
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log_puts(f->path); |
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log_puts(": failed to write header\n"); |
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return 0; |
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} |
248 |
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f->curpos = f->startpos; |
249 |
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return 1; |
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} |
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static int |
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afile_checkpar(struct afile *f) |
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{ |
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if (f->nch == 0 || f->nch > NCHAN_MAX) { |
256 |
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log_puts(f->path); |
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log_puts(": "); |
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log_putu(f->nch); |
259 |
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log_puts(": unsupported number of channels\n"); |
260 |
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return 0; |
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} |
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if (f->rate < RATE_MIN || f->rate > RATE_MAX) { |
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log_puts(f->path); |
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log_puts(": "); |
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log_putu(f->rate); |
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log_puts(": unsupported rate\n"); |
267 |
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return 0; |
268 |
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} |
269 |
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if (f->par.bits < BITS_MIN || f->par.bits > BITS_MAX) { |
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log_puts(f->path); |
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log_puts(": "); |
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log_putu(f->par.bits); |
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log_puts(": unsupported bits per sample\n"); |
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return 0; |
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} |
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if (f->par.bits > f->par.bps * 8) { |
277 |
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log_puts(f->path); |
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log_puts(": bits larger than bytes-per-sample\n"); |
279 |
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return 0; |
280 |
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} |
281 |
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if (f->fmt == AFILE_FMT_FLOAT && f->par.bits != 32) { |
282 |
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log_puts(f->path); |
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log_puts(": only 32-bit floating points are supported\n"); |
284 |
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return 0; |
285 |
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} |
286 |
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return 1; |
287 |
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} |
288 |
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289 |
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static int |
290 |
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afile_wav_readfmt(struct afile *f, unsigned int csize) |
291 |
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{ |
292 |
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struct wav_fmt fmt; |
293 |
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unsigned int wenc; |
294 |
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295 |
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if (csize < WAV_FMT_SIZE) { |
296 |
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log_puts(f->path); |
297 |
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log_puts(": "); |
298 |
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log_putu(csize); |
299 |
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log_puts(": bogus format chunk size\n"); |
300 |
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return 0; |
301 |
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} |
302 |
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if (csize > WAV_FMT_EXT_SIZE) |
303 |
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csize = WAV_FMT_EXT_SIZE; |
304 |
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if (read(f->fd, &fmt, csize) != csize) { |
305 |
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log_puts(f->path); |
306 |
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log_puts(": failed to read format chunk\n"); |
307 |
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return 0; |
308 |
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} |
309 |
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wenc = le16_get(&fmt.fmt); |
310 |
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f->par.bits = le16_get(&fmt.bits); |
311 |
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if (wenc == WAV_FMT_EXT) { |
312 |
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if (csize != WAV_FMT_EXT_SIZE) { |
313 |
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log_puts(f->path); |
314 |
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log_puts(": missing extended format chunk\n"); |
315 |
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return 0; |
316 |
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} |
317 |
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if (memcmp(fmt.guid, wav_guid, sizeof(wav_guid)) != 0) { |
318 |
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log_puts(f->path); |
319 |
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log_puts(": unknown format (GUID)\n"); |
320 |
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return 0; |
321 |
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} |
322 |
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f->par.bps = (f->par.bits + 7) / 8; |
323 |
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f->par.bits = le16_get(&fmt.valbits); |
324 |
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wenc = le16_get(&fmt.extfmt); |
325 |
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} else |
326 |
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f->par.bps = (f->par.bits + 7) / 8; |
327 |
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f->nch = le16_get(&fmt.nch); |
328 |
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f->rate = le32_get(&fmt.rate); |
329 |
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f->par.le = 1; |
330 |
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f->par.msb = 1; |
331 |
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switch (wenc) { |
332 |
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case WAV_FMT_PCM: |
333 |
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f->fmt = AFILE_FMT_PCM; |
334 |
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f->par.sig = (f->par.bits <= 8) ? 0 : 1; |
335 |
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break; |
336 |
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case WAV_FMT_ALAW: |
337 |
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f->fmt = AFILE_FMT_ALAW; |
338 |
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f->par.bits = 8; |
339 |
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f->par.bps = 1; |
340 |
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break; |
341 |
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case WAV_FMT_ULAW: |
342 |
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f->fmt = AFILE_FMT_ULAW; |
343 |
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f->par.bits = 8; |
344 |
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f->par.bps = 1; |
345 |
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break; |
346 |
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case WAV_FMT_FLOAT: |
347 |
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f->fmt = AFILE_FMT_FLOAT; |
348 |
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break; |
349 |
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default: |
350 |
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log_putu(wenc); |
351 |
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log_puts(": unsupported encoding\n"); |
352 |
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return 0; |
353 |
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} |
354 |
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return afile_checkpar(f); |
355 |
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} |
356 |
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|
357 |
|
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static int |
358 |
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afile_wav_readhdr(struct afile *f) |
359 |
|
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{ |
360 |
|
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struct wav_riff riff; |
361 |
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struct wav_chunk chunk; |
362 |
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unsigned int csize, rsize, pos = 0; |
363 |
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int fmt_done = 0; |
364 |
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|
365 |
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if (!afile_readhdr(f, &riff, sizeof(struct wav_riff))) |
366 |
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return 0; |
367 |
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if (memcmp(&riff.id, &wav_id_riff, 4) != 0 || |
368 |
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memcmp(&riff.type, &wav_id_wave, 4)) { |
369 |
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log_puts(f->path); |
370 |
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log_puts(": not a .wav file\n"); |
371 |
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return 0; |
372 |
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} |
373 |
|
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rsize = le32_get(&riff.size); |
374 |
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for (;;) { |
375 |
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if (pos + sizeof(struct wav_chunk) > rsize) { |
376 |
|
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log_puts(f->path); |
377 |
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log_puts(": missing data chunk\n"); |
378 |
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return 0; |
379 |
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} |
380 |
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if (read(f->fd, &chunk, sizeof(chunk)) != sizeof(chunk)) { |
381 |
|
|
log_puts(f->path); |
382 |
|
|
log_puts(": failed to read chunk header\n"); |
383 |
|
|
return 0; |
384 |
|
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} |
385 |
|
|
csize = le32_get(&chunk.size); |
386 |
|
|
if (memcmp(chunk.id, wav_id_fmt, 4) == 0) { |
387 |
|
|
if (!afile_wav_readfmt(f, csize)) |
388 |
|
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return 0; |
389 |
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|
fmt_done = 1; |
390 |
|
|
} else if (memcmp(chunk.id, wav_id_data, 4) == 0) { |
391 |
|
|
f->startpos = pos + sizeof(riff) + sizeof(chunk); |
392 |
|
|
f->endpos = f->startpos + csize; |
393 |
|
|
break; |
394 |
|
|
} else { |
395 |
|
|
#ifdef DEBUG |
396 |
|
|
if (log_level >= 2) { |
397 |
|
|
log_puts(f->path); |
398 |
|
|
log_puts(": skipped unknown chunk\n"); |
399 |
|
|
} |
400 |
|
|
#endif |
401 |
|
|
} |
402 |
|
|
|
403 |
|
|
/* |
404 |
|
|
* next chunk |
405 |
|
|
*/ |
406 |
|
|
pos += sizeof(struct wav_chunk) + csize; |
407 |
|
|
if (lseek(f->fd, sizeof(riff) + pos, SEEK_SET) < 0) { |
408 |
|
|
log_puts(f->path); |
409 |
|
|
log_puts(": filed to seek to chunk\n"); |
410 |
|
|
return 0; |
411 |
|
|
} |
412 |
|
|
} |
413 |
|
|
if (!fmt_done) { |
414 |
|
|
log_puts(f->path); |
415 |
|
|
log_puts(": missing format chunk\n"); |
416 |
|
|
return 0; |
417 |
|
|
} |
418 |
|
|
return 1; |
419 |
|
|
} |
420 |
|
|
|
421 |
|
|
/* |
422 |
|
|
* Write header and seek to start position |
423 |
|
|
*/ |
424 |
|
|
static int |
425 |
|
|
afile_wav_writehdr(struct afile *f) |
426 |
|
|
{ |
427 |
|
|
struct wav_hdr hdr; |
428 |
|
|
|
429 |
|
|
memset(&hdr, 0, sizeof(struct wav_hdr)); |
430 |
|
|
memcpy(hdr.riff.id, wav_id_riff, 4); |
431 |
|
|
memcpy(hdr.riff.type, wav_id_wave, 4); |
432 |
|
|
le32_set(&hdr.riff.size, f->endpos - sizeof(hdr.riff)); |
433 |
|
|
memcpy(hdr.fmt_hdr.id, wav_id_fmt, 4); |
434 |
|
|
le32_set(&hdr.fmt_hdr.size, sizeof(hdr.fmt)); |
435 |
|
|
le16_set(&hdr.fmt.fmt, 1); |
436 |
|
|
le16_set(&hdr.fmt.nch, f->nch); |
437 |
|
|
le32_set(&hdr.fmt.rate, f->rate); |
438 |
|
|
le32_set(&hdr.fmt.byterate, f->rate * f->par.bps * f->nch); |
439 |
|
|
le16_set(&hdr.fmt.blkalign, f->par.bps * f->nch); |
440 |
|
|
le16_set(&hdr.fmt.bits, f->par.bits); |
441 |
|
|
memcpy(hdr.data_hdr.id, wav_id_data, 4); |
442 |
|
|
le32_set(&hdr.data_hdr.size, f->endpos - f->startpos); |
443 |
|
|
return afile_writehdr(f, &hdr, sizeof(struct wav_hdr)); |
444 |
|
|
} |
445 |
|
|
|
446 |
|
|
static int |
447 |
|
|
afile_aiff_readcomm(struct afile *f, unsigned int csize, |
448 |
|
|
int comp, unsigned int *nfr) |
449 |
|
|
{ |
450 |
|
|
struct aiff_comm comm; |
451 |
|
|
unsigned int csize_min; |
452 |
|
|
unsigned int e, m; |
453 |
|
|
|
454 |
|
|
csize_min = comp ? |
455 |
|
|
sizeof(struct aiff_comm) : sizeof(struct aiff_commbase); |
456 |
|
|
if (csize < csize_min) { |
457 |
|
|
log_puts(f->path); |
458 |
|
|
log_puts(": "); |
459 |
|
|
log_putu(csize); |
460 |
|
|
log_puts(": bogus comm chunk size\n"); |
461 |
|
|
return 0; |
462 |
|
|
} |
463 |
|
|
if (read(f->fd, &comm, csize_min) != csize_min) { |
464 |
|
|
log_puts(f->path); |
465 |
|
|
log_puts(": failed to read comm chunk\n"); |
466 |
|
|
return 0; |
467 |
|
|
} |
468 |
|
|
f->nch = be16_get(&comm.base.nch); |
469 |
|
|
e = be16_get(&comm.base.rate_ex); |
470 |
|
|
m = be32_get(&comm.base.rate_hi); |
471 |
|
|
if (e < 0x3fff || e > 0x3fff + 31) { |
472 |
|
|
log_puts(f->path); |
473 |
|
|
log_puts(": malformed sample rate\n"); |
474 |
|
|
return 0; |
475 |
|
|
} |
476 |
|
|
f->rate = m >> (0x3fff + 31 - e); |
477 |
|
|
if (comp) { |
478 |
|
|
if (memcmp(comm.comp_id, aiff_id_none, 4) == 0) { |
479 |
|
|
f->fmt = AFILE_FMT_PCM; |
480 |
|
|
f->par.bits = be16_get(&comm.base.bits); |
481 |
|
|
} else if (memcmp(comm.comp_id, aiff_id_fl32, 4) == 0) { |
482 |
|
|
f->fmt = AFILE_FMT_FLOAT; |
483 |
|
|
f->par.bits = 32; |
484 |
|
|
} else if (memcmp(comm.comp_id, aiff_id_ulaw, 4) == 0) { |
485 |
|
|
f->fmt = AFILE_FMT_ULAW; |
486 |
|
|
f->par.bits = 8; |
487 |
|
|
} else if (memcmp(comm.comp_id, aiff_id_alaw, 4) == 0) { |
488 |
|
|
f->fmt = AFILE_FMT_ALAW; |
489 |
|
|
f->par.bits = 8; |
490 |
|
|
} else { |
491 |
|
|
log_puts(f->path); |
492 |
|
|
log_puts(": unsupported encoding\n"); |
493 |
|
|
return 0; |
494 |
|
|
} |
495 |
|
|
} else { |
496 |
|
|
f->fmt = AFILE_FMT_PCM; |
497 |
|
|
f->par.bits = be16_get(&comm.base.bits); |
498 |
|
|
} |
499 |
|
|
f->par.le = 0; |
500 |
|
|
f->par.sig = 1; |
501 |
|
|
f->par.msb = 1; |
502 |
|
|
f->par.bps = (f->par.bits + 7) / 8; |
503 |
|
|
*nfr = be32_get(&comm.base.nfr); |
504 |
|
|
return afile_checkpar(f); |
505 |
|
|
} |
506 |
|
|
|
507 |
|
|
static int |
508 |
|
|
afile_aiff_readdata(struct afile *f, unsigned int csize, unsigned int *roffs) |
509 |
|
|
{ |
510 |
|
|
struct aiff_data data; |
511 |
|
|
|
512 |
|
|
if (csize < sizeof(struct aiff_data)) { |
513 |
|
|
log_puts(f->path); |
514 |
|
|
log_puts(": "); |
515 |
|
|
log_putu(csize); |
516 |
|
|
log_puts(": bogus data chunk size\n"); |
517 |
|
|
return 0; |
518 |
|
|
} |
519 |
|
|
csize = sizeof(struct aiff_data); |
520 |
|
|
if (read(f->fd, &data, csize) != csize) { |
521 |
|
|
log_puts(f->path); |
522 |
|
|
log_puts(": failed to read data chunk\n"); |
523 |
|
|
return 0; |
524 |
|
|
} |
525 |
|
|
*roffs = csize + be32_get(&data.offs); |
526 |
|
|
return 1; |
527 |
|
|
} |
528 |
|
|
|
529 |
|
|
static int |
530 |
|
|
afile_aiff_readhdr(struct afile *f) |
531 |
|
|
{ |
532 |
|
|
struct aiff_form form; |
533 |
|
|
struct aiff_chunk chunk; |
534 |
|
|
unsigned int csize, rsize, nfr = 0, pos = 0, offs; |
535 |
|
|
int comm_done = 0, comp; |
536 |
|
|
|
537 |
|
|
if (!afile_readhdr(f, &form, sizeof(struct aiff_form))) |
538 |
|
|
return 0; |
539 |
|
|
if (memcmp(&form.id, &aiff_id_form, 4) != 0) { |
540 |
|
|
log_puts(f->path); |
541 |
|
|
log_puts(": not an aiff file\n"); |
542 |
|
|
return 0; |
543 |
|
|
} |
544 |
|
|
if (memcmp(&form.type, &aiff_id_aiff, 4) == 0) { |
545 |
|
|
comp = 0; |
546 |
|
|
} else if (memcmp(&form.type, &aiff_id_aifc, 4) == 0) |
547 |
|
|
comp = 1; |
548 |
|
|
else { |
549 |
|
|
log_puts(f->path); |
550 |
|
|
log_puts(": unsupported aiff file sub-type\n"); |
551 |
|
|
return 0; |
552 |
|
|
} |
553 |
|
|
rsize = be32_get(&form.size); |
554 |
|
|
for (;;) { |
555 |
|
|
if (pos + sizeof(struct aiff_chunk) > rsize) { |
556 |
|
|
log_puts(f->path); |
557 |
|
|
log_puts(": missing data chunk\n"); |
558 |
|
|
return 0; |
559 |
|
|
} |
560 |
|
|
if (read(f->fd, &chunk, sizeof(chunk)) != sizeof(chunk)) { |
561 |
|
|
log_puts(f->path); |
562 |
|
|
log_puts(": failed to read chunk header\n"); |
563 |
|
|
return 0; |
564 |
|
|
} |
565 |
|
|
csize = be32_get(&chunk.size); |
566 |
|
|
if (memcmp(chunk.id, aiff_id_comm, 4) == 0) { |
567 |
|
|
if (!afile_aiff_readcomm(f, csize, comp, &nfr)) |
568 |
|
|
return 0; |
569 |
|
|
comm_done = 1; |
570 |
|
|
} else if (memcmp(chunk.id, aiff_id_data, 4) == 0) { |
571 |
|
|
if (!afile_aiff_readdata(f, csize, &offs)) |
572 |
|
|
return 0; |
573 |
|
|
f->startpos = sizeof(form) + pos + |
574 |
|
|
sizeof(chunk) + offs; |
575 |
|
|
break; |
576 |
|
|
} else { |
577 |
|
|
#ifdef DEBUG |
578 |
|
|
if (log_level >= 2) { |
579 |
|
|
log_puts(f->path); |
580 |
|
|
log_puts(": skipped unknown chunk\n"); |
581 |
|
|
} |
582 |
|
|
#endif |
583 |
|
|
} |
584 |
|
|
|
585 |
|
|
/* |
586 |
|
|
* The aiff spec says "Each Chunk must contain an even |
587 |
|
|
* number of bytes. For those Chunks whose total |
588 |
|
|
* contents would yield an odd number of bytes, a zero |
589 |
|
|
* pad byte must be added at the end of the Chunk. This |
590 |
|
|
* pad byte is not included in ckDataSize, which |
591 |
|
|
* indicates the size of the data in the Chunk." |
592 |
|
|
*/ |
593 |
|
|
csize = (csize + 1) & ~1; |
594 |
|
|
pos += sizeof(struct aiff_chunk) + csize; |
595 |
|
|
|
596 |
|
|
if (lseek(f->fd, sizeof(form) + pos, SEEK_SET) < 0) { |
597 |
|
|
log_puts(f->path); |
598 |
|
|
log_puts(": filed to seek to chunk\n"); |
599 |
|
|
return 0; |
600 |
|
|
} |
601 |
|
|
} |
602 |
|
|
if (!comm_done) { |
603 |
|
|
log_puts(f->path); |
604 |
|
|
log_puts(": missing comm chunk\n"); |
605 |
|
|
return 0; |
606 |
|
|
} |
607 |
|
|
f->endpos = f->startpos + f->par.bps * f->nch * nfr; |
608 |
|
|
return 1; |
609 |
|
|
} |
610 |
|
|
|
611 |
|
|
/* |
612 |
|
|
* Write header and seek to start position |
613 |
|
|
*/ |
614 |
|
|
static int |
615 |
|
|
afile_aiff_writehdr(struct afile *f) |
616 |
|
|
{ |
617 |
|
|
struct aiff_hdr hdr; |
618 |
|
|
unsigned int bpf; |
619 |
|
|
unsigned int e, m; |
620 |
|
|
|
621 |
|
|
/* convert rate to 80-bit float (exponent and fraction part) */ |
622 |
|
|
m = f->rate; |
623 |
|
|
e = 0x3fff + 31; |
624 |
|
|
while ((m & 0x80000000) == 0) { |
625 |
|
|
e--; |
626 |
|
|
m <<= 1; |
627 |
|
|
} |
628 |
|
|
|
629 |
|
|
/* bytes per frame */ |
630 |
|
|
bpf = f->nch * f->par.bps; |
631 |
|
|
|
632 |
|
|
memset(&hdr, 0, sizeof(struct aiff_hdr)); |
633 |
|
|
memcpy(hdr.form.id, aiff_id_form, 4); |
634 |
|
|
memcpy(hdr.form.type, aiff_id_aiff, 4); |
635 |
|
|
be32_set(&hdr.form.size, f->endpos - sizeof(hdr.form)); |
636 |
|
|
|
637 |
|
|
memcpy(hdr.comm_hdr.id, aiff_id_comm, 4); |
638 |
|
|
be32_set(&hdr.comm_hdr.size, sizeof(hdr.comm)); |
639 |
|
|
be16_set(&hdr.comm.nch, f->nch); |
640 |
|
|
be16_set(&hdr.comm.bits, f->par.bits); |
641 |
|
|
be16_set(&hdr.comm.rate_ex, e); |
642 |
|
|
be32_set(&hdr.comm.rate_hi, m); |
643 |
|
|
be32_set(&hdr.comm.rate_lo, 0); |
644 |
|
|
be32_set(&hdr.comm.nfr, (f->endpos - f->startpos) / bpf); |
645 |
|
|
|
646 |
|
|
memcpy(hdr.data_hdr.id, aiff_id_data, 4); |
647 |
|
|
be32_set(&hdr.data_hdr.size, f->endpos - f->startpos); |
648 |
|
|
be32_set(&hdr.data.offs, 0); |
649 |
|
|
be32_set(&hdr.data.blksz, 0); |
650 |
|
|
return afile_writehdr(f, &hdr, sizeof(struct aiff_hdr)); |
651 |
|
|
} |
652 |
|
|
|
653 |
|
|
static int |
654 |
|
|
afile_au_readhdr(struct afile *f) |
655 |
|
|
{ |
656 |
|
|
struct au_hdr hdr; |
657 |
|
|
unsigned int fmt; |
658 |
|
|
|
659 |
|
|
if (!afile_readhdr(f, &hdr, sizeof(struct au_hdr))) |
660 |
|
|
return 0; |
661 |
|
|
if (memcmp(&hdr.id, &au_id, 4) != 0) { |
662 |
|
|
log_puts(f->path); |
663 |
|
|
log_puts(": not a .au file\n"); |
664 |
|
|
return 0; |
665 |
|
|
} |
666 |
|
|
f->startpos = be32_get(&hdr.offs); |
667 |
|
|
f->endpos = f->startpos + be32_get(&hdr.size); |
668 |
|
|
fmt = be32_get(&hdr.fmt); |
669 |
|
|
switch (fmt) { |
670 |
|
|
case AU_FMT_PCM8: |
671 |
|
|
f->fmt = AFILE_FMT_PCM; |
672 |
|
|
f->par.bits = 8; |
673 |
|
|
break; |
674 |
|
|
case AU_FMT_PCM16: |
675 |
|
|
f->fmt = AFILE_FMT_PCM; |
676 |
|
|
f->par.bits = 16; |
677 |
|
|
break; |
678 |
|
|
case AU_FMT_PCM24: |
679 |
|
|
f->fmt = AFILE_FMT_PCM; |
680 |
|
|
f->par.bits = 24; |
681 |
|
|
break; |
682 |
|
|
case AU_FMT_PCM32: |
683 |
|
|
f->fmt = AFILE_FMT_PCM; |
684 |
|
|
f->par.bits = 32; |
685 |
|
|
break; |
686 |
|
|
case AU_FMT_ULAW: |
687 |
|
|
f->fmt = AFILE_FMT_ULAW; |
688 |
|
|
f->par.bits = 8; |
689 |
|
|
f->par.bps = 1; |
690 |
|
|
break; |
691 |
|
|
case AU_FMT_ALAW: |
692 |
|
|
f->fmt = AFILE_FMT_ALAW; |
693 |
|
|
f->par.bits = 8; |
694 |
|
|
f->par.bps = 1; |
695 |
|
|
break; |
696 |
|
|
case AU_FMT_FLOAT: |
697 |
|
|
f->fmt = AFILE_FMT_FLOAT; |
698 |
|
|
f->par.bits = 32; |
699 |
|
|
f->par.bps = 4; |
700 |
|
|
break; |
701 |
|
|
default: |
702 |
|
|
log_puts(f->path); |
703 |
|
|
log_puts(": "); |
704 |
|
|
log_putu(fmt); |
705 |
|
|
log_puts(": unsupported encoding\n"); |
706 |
|
|
return 0; |
707 |
|
|
} |
708 |
|
|
f->par.le = 0; |
709 |
|
|
f->par.sig = 1; |
710 |
|
|
f->par.bps = f->par.bits / 8; |
711 |
|
|
f->par.msb = 0; |
712 |
|
|
f->rate = be32_get(&hdr.rate); |
713 |
|
|
f->nch = be32_get(&hdr.nch); |
714 |
|
|
if (lseek(f->fd, f->startpos, SEEK_SET) < 0) { |
715 |
|
|
log_puts(f->path); |
716 |
|
|
log_puts(": "); |
717 |
|
|
log_puts("failed to seek to data chunk\n"); |
718 |
|
|
return 0; |
719 |
|
|
} |
720 |
|
|
return afile_checkpar(f); |
721 |
|
|
} |
722 |
|
|
|
723 |
|
|
/* |
724 |
|
|
* Write header and seek to start position |
725 |
|
|
*/ |
726 |
|
|
static int |
727 |
|
|
afile_au_writehdr(struct afile *f) |
728 |
|
|
{ |
729 |
|
|
struct au_hdr hdr; |
730 |
|
|
unsigned int fmt; |
731 |
|
|
|
732 |
|
|
memset(&hdr, 0, sizeof(struct au_hdr)); |
733 |
|
|
memcpy(hdr.id, au_id, 4); |
734 |
|
|
be32_set(&hdr.offs, f->startpos); |
735 |
|
|
be32_set(&hdr.size, f->endpos - f->startpos); |
736 |
|
|
switch (f->par.bits) { |
737 |
|
|
case 8: |
738 |
|
|
fmt = AU_FMT_PCM8; |
739 |
|
|
break; |
740 |
|
|
case 16: |
741 |
|
|
fmt = AU_FMT_PCM16; |
742 |
|
|
break; |
743 |
|
|
case 24: |
744 |
|
|
fmt = AU_FMT_PCM24; |
745 |
|
|
break; |
746 |
|
|
case 32: |
747 |
|
|
fmt = AU_FMT_PCM32; |
748 |
|
|
break; |
749 |
|
|
#ifdef DEBUG |
750 |
|
|
default: |
751 |
|
|
log_puts(f->path); |
752 |
|
|
log_puts(": wrong precision\n"); |
753 |
|
|
panic(); |
754 |
|
|
return 0; |
755 |
|
|
#endif |
756 |
|
|
} |
757 |
|
|
be32_set(&hdr.fmt, fmt); |
758 |
|
|
be32_set(&hdr.rate, f->rate); |
759 |
|
|
be32_set(&hdr.nch, f->nch); |
760 |
|
|
return afile_writehdr(f, &hdr, sizeof(struct au_hdr)); |
761 |
|
|
} |
762 |
|
|
|
763 |
|
|
size_t |
764 |
|
|
afile_read(struct afile *f, void *data, size_t count) |
765 |
|
|
{ |
766 |
|
|
off_t maxread; |
767 |
|
|
ssize_t n; |
768 |
|
|
|
769 |
|
|
if (f->endpos >= 0) { |
770 |
|
|
maxread = f->endpos - f->curpos; |
771 |
|
|
if (maxread == 0) { |
772 |
|
|
#ifdef DEBUG |
773 |
|
|
if (log_level >= 3) { |
774 |
|
|
log_puts(f->path); |
775 |
|
|
log_puts(": end reached\n"); |
776 |
|
|
} |
777 |
|
|
#endif |
778 |
|
|
return 0; |
779 |
|
|
} |
780 |
|
|
if (count > maxread) |
781 |
|
|
count = maxread; |
782 |
|
|
} |
783 |
|
|
n = read(f->fd, data, count); |
784 |
|
|
if (n < 0) { |
785 |
|
|
log_puts(f->path); |
786 |
|
|
log_puts(": couldn't read\n"); |
787 |
|
|
return 0; |
788 |
|
|
} |
789 |
|
|
f->curpos += n; |
790 |
|
|
return n; |
791 |
|
|
} |
792 |
|
|
|
793 |
|
|
size_t |
794 |
|
|
afile_write(struct afile *f, void *data, size_t count) |
795 |
|
|
{ |
796 |
|
|
off_t maxwrite; |
797 |
|
|
int n; |
798 |
|
|
|
799 |
|
|
if (f->maxpos >= 0) { |
800 |
|
|
maxwrite = f->maxpos - f->curpos; |
801 |
|
|
if (maxwrite == 0) { |
802 |
|
|
#ifdef DEBUG |
803 |
|
|
if (log_level >= 3) { |
804 |
|
|
log_puts(f->path); |
805 |
|
|
log_puts(": max file size reached\n"); |
806 |
|
|
} |
807 |
|
|
#endif |
808 |
|
|
return 0; |
809 |
|
|
} |
810 |
|
|
if (count > maxwrite) |
811 |
|
|
count = maxwrite; |
812 |
|
|
} |
813 |
|
|
n = write(f->fd, data, count); |
814 |
|
|
if (n < 0) { |
815 |
|
|
log_puts(f->path); |
816 |
|
|
log_puts(": couldn't write\n"); |
817 |
|
|
return 0; |
818 |
|
|
} |
819 |
|
|
f->curpos += n; |
820 |
|
|
if (f->endpos < f->curpos) |
821 |
|
|
f->endpos = f->curpos; |
822 |
|
|
return n; |
823 |
|
|
} |
824 |
|
|
|
825 |
|
|
int |
826 |
|
|
afile_seek(struct afile *f, off_t pos) |
827 |
|
|
{ |
828 |
|
|
pos += f->startpos; |
829 |
|
|
if (f->endpos >= 0 && pos > f->endpos && !f->par.sig) { |
830 |
|
|
log_puts(f->path); |
831 |
|
|
log_puts(": attempt to seek outside file boundaries\n"); |
832 |
|
|
return 0; |
833 |
|
|
} |
834 |
|
|
|
835 |
|
|
/* |
836 |
|
|
* seek only if needed to avoid errors with pipes & sockets |
837 |
|
|
*/ |
838 |
|
|
if (pos != f->curpos) { |
839 |
|
|
if (lseek(f->fd, pos, SEEK_SET) < 0) { |
840 |
|
|
log_puts(f->path); |
841 |
|
|
log_puts(": couldn't seek\n"); |
842 |
|
|
return 0; |
843 |
|
|
} |
844 |
|
|
f->curpos = pos; |
845 |
|
|
} |
846 |
|
|
return 1; |
847 |
|
|
} |
848 |
|
|
|
849 |
|
|
void |
850 |
|
|
afile_close(struct afile *f) |
851 |
|
|
{ |
852 |
|
|
if (f->flags & AFILE_FWRITE) { |
853 |
|
|
if (f->hdr == AFILE_HDR_WAV) |
854 |
|
|
afile_wav_writehdr(f); |
855 |
|
|
else if (f->hdr == AFILE_HDR_AIFF) |
856 |
|
|
afile_aiff_writehdr(f); |
857 |
|
|
else if (f->hdr == AFILE_HDR_AU) |
858 |
|
|
afile_au_writehdr(f); |
859 |
|
|
} |
860 |
|
|
close(f->fd); |
861 |
|
|
} |
862 |
|
|
|
863 |
|
|
int |
864 |
|
|
afile_open(struct afile *f, char *path, int hdr, int flags, |
865 |
|
|
struct aparams *par, int rate, int nch) |
866 |
|
|
{ |
867 |
|
|
char *ext; |
868 |
|
|
static union { |
869 |
|
|
struct wav_hdr wav; |
870 |
|
|
struct aiff_hdr aiff; |
871 |
|
|
struct au_hdr au; |
872 |
|
|
} dummy; |
873 |
|
|
|
874 |
|
|
f->par = *par; |
875 |
|
|
f->rate = rate; |
876 |
|
|
f->nch = nch; |
877 |
|
|
f->flags = flags; |
878 |
|
|
f->hdr = hdr; |
879 |
|
|
if (hdr == AFILE_HDR_AUTO) { |
880 |
|
|
f->hdr = AFILE_HDR_RAW; |
881 |
|
|
ext = strrchr(path, '.'); |
882 |
|
|
if (ext != NULL) { |
883 |
|
|
ext++; |
884 |
|
|
if (strcasecmp(ext, "aif") == 0 || |
885 |
|
|
strcasecmp(ext, "aiff") == 0 || |
886 |
|
|
strcasecmp(ext, "aifc") == 0) |
887 |
|
|
f->hdr = AFILE_HDR_AIFF; |
888 |
|
|
else if (strcasecmp(ext, "au") == 0 || |
889 |
|
|
strcasecmp(ext, "snd") == 0) |
890 |
|
|
f->hdr = AFILE_HDR_AU; |
891 |
|
|
else if (strcasecmp(ext, "wav") == 0) |
892 |
|
|
f->hdr = AFILE_HDR_WAV; |
893 |
|
|
} |
894 |
|
|
} |
895 |
|
|
if (f->flags == AFILE_FREAD) { |
896 |
|
|
if (strcmp(path, "-") == 0) { |
897 |
|
|
f->path = "stdin"; |
898 |
|
|
f->fd = STDIN_FILENO; |
899 |
|
|
} else { |
900 |
|
|
f->path = path; |
901 |
|
|
f->fd = open(f->path, O_RDONLY, 0); |
902 |
|
|
if (f->fd < 0) { |
903 |
|
|
log_puts(f->path); |
904 |
|
|
log_puts(": failed to open for reading\n"); |
905 |
|
|
return 0; |
906 |
|
|
} |
907 |
|
|
} |
908 |
|
|
if (f->hdr == AFILE_HDR_WAV) { |
909 |
|
|
if (!afile_wav_readhdr(f)) |
910 |
|
|
goto bad_close; |
911 |
|
|
} else if (f->hdr == AFILE_HDR_AIFF) { |
912 |
|
|
if (!afile_aiff_readhdr(f)) |
913 |
|
|
goto bad_close; |
914 |
|
|
} else if (f->hdr == AFILE_HDR_AU) { |
915 |
|
|
if (!afile_au_readhdr(f)) |
916 |
|
|
goto bad_close; |
917 |
|
|
} else { |
918 |
|
|
f->startpos = 0; |
919 |
|
|
f->endpos = -1; /* read until EOF */ |
920 |
|
|
f->fmt = AFILE_FMT_PCM; |
921 |
|
|
} |
922 |
|
|
f->curpos = f->startpos; |
923 |
|
|
} else if (flags == AFILE_FWRITE) { |
924 |
|
|
if (strcmp(path, "-") == 0) { |
925 |
|
|
f->path = "stdout"; |
926 |
|
|
f->fd = STDOUT_FILENO; |
927 |
|
|
} else { |
928 |
|
|
f->path = path; |
929 |
|
|
f->fd = open(f->path, |
930 |
|
|
O_WRONLY | O_TRUNC | O_CREAT, 0666); |
931 |
|
|
if (f->fd < 0) { |
932 |
|
|
log_puts(f->path); |
933 |
|
|
log_puts(": failed to create file\n"); |
934 |
|
|
return 0; |
935 |
|
|
} |
936 |
|
|
} |
937 |
|
|
if (f->hdr == AFILE_HDR_WAV) { |
938 |
|
|
f->par.bps = (f->par.bits + 7) >> 3; |
939 |
|
|
if (f->par.bits > 8) { |
940 |
|
|
f->par.le = 1; |
941 |
|
|
f->par.sig = 1; |
942 |
|
|
} else |
943 |
|
|
f->par.sig = 0; |
944 |
|
|
if (f->par.bits & 7) |
945 |
|
|
f->par.msb = 1; |
946 |
|
|
f->endpos = f->startpos = sizeof(struct wav_hdr); |
947 |
|
|
f->maxpos = 0x7fffffff; |
948 |
|
|
if (!afile_writehdr(f, &dummy, sizeof(struct wav_hdr))) |
949 |
|
|
goto bad_close; |
950 |
|
|
} else if (f->hdr == AFILE_HDR_AIFF) { |
951 |
|
|
f->par.bps = (f->par.bits + 7) >> 3; |
952 |
|
|
if (f->par.bps > 1) |
953 |
|
|
f->par.le = 0; |
954 |
|
|
f->par.sig = 1; |
955 |
|
|
if (f->par.bits & 7) |
956 |
|
|
f->par.msb = 1; |
957 |
|
|
f->endpos = f->startpos = sizeof(struct aiff_hdr); |
958 |
|
|
f->maxpos = 0x7fffffff; |
959 |
|
|
if (!afile_writehdr(f, &dummy, |
960 |
|
|
sizeof(struct aiff_hdr))) |
961 |
|
|
goto bad_close; |
962 |
|
|
} else if (f->hdr == AFILE_HDR_AU) { |
963 |
|
|
f->par.bits = (f->par.bits + 7) & ~7; |
964 |
|
|
f->par.bps = f->par.bits / 8; |
965 |
|
|
f->par.le = 0; |
966 |
|
|
f->par.sig = 1; |
967 |
|
|
f->par.msb = 1; |
968 |
|
|
f->endpos = f->startpos = sizeof(struct au_hdr); |
969 |
|
|
f->maxpos = 0x7fffffff; |
970 |
|
|
if (!afile_writehdr(f, &dummy, sizeof(struct au_hdr))) |
971 |
|
|
goto bad_close; |
972 |
|
|
} else { |
973 |
|
|
f->endpos = f->startpos = 0; |
974 |
|
|
f->maxpos = -1; |
975 |
|
|
} |
976 |
|
|
f->curpos = f->startpos; |
977 |
|
|
} else { |
978 |
|
|
#ifdef DEBUG |
979 |
|
|
log_puts("afile_open: wrong flags\n"); |
980 |
|
|
panic(); |
981 |
|
|
#endif |
982 |
|
|
} |
983 |
|
|
return 1; |
984 |
|
|
bad_close: |
985 |
|
|
close(f->fd); |
986 |
|
|
return 0; |
987 |
|
|
} |