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/*
* FILE: codec_types.c
* AUTHOR(S): Orion Hodson
*
*
* Copyright (c) 1999-2001 University College London
* All rights reserved.
*/
#ifndef HIDE_SOURCE_STRINGS
static const char cvsid[] =
"$Id: codec_types.c,v 1.13 2001/01/08 20:29:57 ucaccsp Exp $";
#endif /* HIDE_SOURCE_STRINGS */
#include "config_unix.h"
#include "config_win32.h"
#include "audio_types.h"
#include "codec_types.h"
#include "util.h"
#include "debug.h"
int
media_data_create(media_data **ppmd, int nrep)
{
media_data *pmd;
int i;
*ppmd = NULL;
pmd = (media_data*)block_alloc(sizeof(media_data));
if (pmd) {
memset(pmd, 0, sizeof(media_data));
for(i = 0; i < nrep; i++) {
pmd->rep[i] = block_alloc(sizeof(coded_unit));
if (pmd->rep[i] == NULL) {
pmd->nrep = i;
media_data_destroy(&pmd, sizeof(media_data));
return FALSE;
}
memset(pmd->rep[i], 0, sizeof(coded_unit));
}
pmd->nrep = nrep;
*ppmd = pmd;
return TRUE;
}
return FALSE;
}
void
media_data_destroy(media_data **ppmd, uint32_t md_size)
{
media_data *pmd;
coded_unit *pcu;
int i;
pmd = *ppmd;
assert(pmd != NULL);
assert(md_size == sizeof(media_data));
for(i = 0; i < pmd->nrep; i++) {
pcu = pmd->rep[i];
if (pcu->state) {
block_free(pcu->state, pcu->state_len);
pcu->state = 0;
pcu->state_len = 0;
}
assert(pcu->state_len == 0);
if (pcu->data) {
block_free(pcu->data, pcu->data_len);
pcu->data = 0;
pcu->data_len = 0;
}
assert(pcu->data_len == 0);
block_free(pcu, sizeof(coded_unit));
}
#ifdef DEBUG_MEM
for(i = pmd->nrep; i < MAX_MEDIA_UNITS; i++) {
if (pmd->rep[i] != NULL) {
assert(pmd->rep[i]->state == NULL);
assert(pmd->rep[i]->data == NULL);
}
}
#endif /* DEBUG_MEM */
block_free(pmd, sizeof(media_data));
*ppmd = NULL;
}
/* media_data_dup duplicate a media data unit. Copies data from src to a */
/* new unit dst. Returns TRUE on success. */
int
media_data_dup(media_data **dst, media_data *src)
{
media_data *m;
uint8_t i;
if (media_data_create(&m, src->nrep) == FALSE) {
*dst = NULL;
return FALSE;
}
for(i = 0; i < src->nrep; i++) {
if (coded_unit_dup(m->rep[i], src->rep[i]) == FALSE) {
goto media_dup_failure;
}
}
*dst = m;
return TRUE;
media_dup_failure:
media_data_destroy(&m, sizeof(media_data));
return FALSE;
}
int
coded_unit_dup(coded_unit *dst, coded_unit *src)
{
assert(dst != NULL);
assert(src != NULL);
assert(src->data_len != 0);
dst->data = (u_char*)block_alloc(src->data_len);
dst->data_len = src->data_len;
memcpy(dst->data, src->data, src->data_len);
if (src->state_len != 0) {
dst->state = (u_char*)block_alloc(src->state_len);
dst->state_len = src->state_len;
memcpy(dst->state, src->state, src->state_len);
} else {
dst->state = NULL;
dst->state_len = 0;
}
dst->id = src->id;
return TRUE;
}
void
coded_unit_layer_split(coded_unit *in, coded_unit *out, uint8_t layer, uint8_t *layer_markers)
{
uint16_t tmp_datalen;
uint8_t i;
tmp_datalen = (uint16_t)(layer_markers[layer] - layer_markers[layer-1]);
out->data = (u_char*)block_alloc(tmp_datalen);
out->data_len = tmp_datalen;
for(i=layer_markers[layer-1];i<layer_markers[layer];i++) {
out->data[i-layer_markers[layer-1]] = in->data[i];
}
if (in->state_len != 0) {
out->state = (u_char*)block_alloc(in->state_len);
out->state_len = in->state_len;
memcpy(out->state, in->state, in->state_len);
} else {
in->state = NULL;
in->state_len = 0;
}
out->id = in->id;
}
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