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FS-7500: add partition mode to switch_buffer

This commit is contained in:
Anthony Minessale 2015-03-11 18:32:45 -05:00 committed by Michael Jerris
parent 9bd2d53770
commit 5fcb594246
2 changed files with 55 additions and 1 deletions
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4
src/include/switch_buffer.h
View File

@ -52,6 +52,10 @@ SWITCH_BEGIN_EXTERN_C
struct switch_buffer;
SWITCH_DECLARE(switch_status_t) switch_buffer_create_partition(switch_memory_pool_t *pool, switch_buffer_t **buffer, void *data, switch_size_t datalen);
SWITCH_DECLARE(switch_status_t) switch_buffer_set_partition_data(switch_buffer_t *buffer, void *data, switch_size_t datalen);
SWITCH_DECLARE(switch_status_t) switch_buffer_reset_partition_data(switch_buffer_t *buffer);
/*! \brief Allocate a new switch_buffer
* \param pool Pool to allocate the buffer from
* \param buffer returned pointer to the new buffer

52
src/switch_buffer.c
View File

@ -35,7 +35,8 @@
static uint32_t buffer_id = 0;
typedef enum {
SWITCH_BUFFER_FLAG_DYNAMIC = (1 << 0)
SWITCH_BUFFER_FLAG_DYNAMIC = (1 << 0),
SWITCH_BUFFER_FLAG_PARTITION = (1 << 1)
} switch_buffer_flag_t;
struct switch_buffer {
@ -52,6 +53,43 @@ struct switch_buffer {
int32_t loops;
};
SWITCH_DECLARE(switch_status_t) switch_buffer_reset_partition_data(switch_buffer_t *buffer)
{
if (!switch_test_flag(buffer, SWITCH_BUFFER_FLAG_PARTITION)) {
return SWITCH_STATUS_FALSE;
}
buffer->head = buffer->data;
buffer->used = buffer->actually_used = buffer->datalen;
return SWITCH_STATUS_SUCCESS;
}
SWITCH_DECLARE(switch_status_t) switch_buffer_set_partition_data(switch_buffer_t *buffer, void *data, switch_size_t datalen)
{
if (!switch_test_flag(buffer, SWITCH_BUFFER_FLAG_PARTITION)) {
return SWITCH_STATUS_FALSE;
}
buffer->data = data;
buffer->datalen = datalen;
return switch_buffer_reset_partition_data(buffer);
}
SWITCH_DECLARE(switch_status_t) switch_buffer_create_partition(switch_memory_pool_t *pool, switch_buffer_t **buffer, void *data, switch_size_t datalen)
{
switch_buffer_t *new_buffer;
if ((new_buffer = switch_core_alloc(pool, sizeof(switch_buffer_t))) != 0) {
new_buffer->id = buffer_id++;
switch_set_flag(new_buffer, SWITCH_BUFFER_FLAG_PARTITION);
switch_buffer_set_partition_data(new_buffer, data, datalen);
*buffer = new_buffer;
return SWITCH_STATUS_SUCCESS;
}
return SWITCH_STATUS_MEMERR;
}
SWITCH_DECLARE(switch_status_t) switch_buffer_create(switch_memory_pool_t *pool, switch_buffer_t **buffer, switch_size_t max_len)
{
switch_buffer_t *new_buffer;
@ -244,6 +282,10 @@ SWITCH_DECLARE(switch_size_t) switch_buffer_write(switch_buffer_t *buffer, const
{
switch_size_t freespace, actual_freespace;
if (switch_test_flag(buffer, SWITCH_BUFFER_FLAG_PARTITION)) {
return 0;
}
switch_assert(buffer->data != NULL);
if (!datalen) {
@ -306,6 +348,10 @@ SWITCH_DECLARE(switch_size_t) switch_buffer_zwrite(switch_buffer_t *buffer, cons
{
switch_size_t w;
if (switch_test_flag(buffer, SWITCH_BUFFER_FLAG_PARTITION)) {
return 0;
}
if (!(w = switch_buffer_write(buffer, data, datalen))) {
switch_buffer_zero(buffer);
return switch_buffer_write(buffer, data, datalen);
@ -318,6 +364,10 @@ SWITCH_DECLARE(switch_size_t) switch_buffer_slide_write(switch_buffer_t *buffer,
{
switch_size_t w;
if (switch_test_flag(buffer, SWITCH_BUFFER_FLAG_PARTITION)) {
return 0;
}
if (!(w = switch_buffer_write(buffer, data, datalen))) {
switch_buffer_toss(buffer, datalen);
return switch_buffer_write(buffer, data, datalen);