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src/alac.c : Start work on filling on the 'pakt' chunk header.

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Erik de Castro Lopo 2013-02-03 21:49:28 +11:00
parent 8424962395
commit 3bf4533c96
2 changed files with 22 additions and 11 deletions
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3
ChangeLog
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@ -6,6 +6,9 @@
* src/sfendian.h
Add functions psf_put_be64() and psf_put_be32().
* src/alac.c
Start work on filling on the 'pakt' chunk header.
2013-02-02 Erik de Castro Lopo <erikd AT mega-nerd DOT com>
* doc/FAQ.html

30
src/alac.c
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@ -32,8 +32,6 @@
#define ALAC_MAX_FRAME_SIZE 8192
#define ALAC_BYTE_BUFFER_SIZE 82000
#define kuki_MARKER MAKE_MARKER ('k', 'u', 'k', 'i')
#define pakt_MARKER MAKE_MARKER ('p', 'a', 'k', 't')
typedef struct
{ uint32_t current, count, allocated ;
@ -97,7 +95,7 @@ static uint32_t alac_kuki_read (SF_PRIVATE * psf, uint32_t kuki_offset, uint8_t
static PAKT_INFO * alac_pakt_alloc (uint32_t initial_count) ;
static PAKT_INFO * alac_pakt_read_decode (SF_PRIVATE * psf, uint32_t pakt_offset) ;
static PAKT_INFO * alac_pakt_append (PAKT_INFO * info, uint32_t value) ;
static uint8_t * alac_pakt_encode (const PAKT_INFO *info, uint32_t * pakt_size) ;
static uint8_t * alac_pakt_encode (const SF_PRIVATE *psf, uint32_t * pakt_size) ;
static sf_count_t alac_pakt_block_offset (const PAKT_INFO *info, uint32_t block) ;
/*============================================================================================
@ -170,7 +168,7 @@ alac_close (SF_PRIVATE *psf)
SF_CHUNK_INFO chunk_info ;
sf_count_t readcount ;
uint8_t *kuki_data [plac->kuki_size] ;
uint32_t pakt_size ;
uint32_t pakt_size = 0 ;
plac->final_write_block = 1 ;
@ -188,7 +186,7 @@ alac_close (SF_PRIVATE *psf)
memset (&chunk_info, 0, sizeof (chunk_info)) ;
chunk_info.id_size = snprintf (chunk_info.id, sizeof (chunk_info.id), "pakt") ;
chunk_info.data = alac_pakt_encode (plac->pakt_info, &pakt_size) ;
chunk_info.data = alac_pakt_encode (psf, &pakt_size) ;
chunk_info.datalen = pakt_size ;
psf_save_write_chunk (&psf->wchunks, &chunk_info) ;
@ -826,7 +824,7 @@ alac_pakt_read_decode (SF_PRIVATE * psf, uint32_t UNUSED (pakt_offset))
info = alac_pakt_alloc (pakt_size / 4) ;
/* Start at 24 bytes in. The chunks have some unknown leading cruft. */
/* Start at 24 bytes in, skipping over the 'pakt' chunks header. */
for (bcount = 24 ; bcount < pakt_size && value != 0 ; )
{ uint8_t byte ;
int32_t count = 0 ;
@ -862,14 +860,24 @@ FreeExit :
} /* alac_pakt_read_decode */
static uint8_t *
alac_pakt_encode (const PAKT_INFO *info, uint32_t * pakt_size_out)
{ uint8_t *data ;
alac_pakt_encode (const SF_PRIVATE *psf, uint32_t * pakt_size_out)
{ const ALAC_PRIVATE *plac ;
const PAKT_INFO *info ;
uint8_t *data ;
uint32_t k, allocated, pakt_size ;
allocated = 100 + 2 * info->count ;
data = calloc (1, allocated) ;
plac = psf->codec_data ;
info = plac->pakt_info ;
/* 24 bytes of unknown data at start of 'pakt'. */
allocated = 100 + 2 * info->count ;
if ((data = calloc (1, allocated)) == NULL)
return NULL ;
psf_put_be64 (data, 0, info->count) ;
psf_put_be64 (data, 8, psf->sf.frames) ;
psf_put_be32 (data, 20, plac->partial_block_frames) ;
/* Real 'pakt' data starts after 24 byte header. */
pakt_size = 24 ;
for (k = 0 ; k < info->count ; k++)