bytewriter: Add a generic byte writer

Fixes bug #590669.
This commit is contained in:
Sebastian Dröge 2009-10-03 13:30:54 +02:00
parent f4c12be109
commit 41f7a3fe09
3 changed files with 974 additions and 0 deletions

View file

@ -9,6 +9,7 @@ libgstbase_@GST_MAJORMINOR@_la_SOURCES = \
gstbasetransform.c \
gstbitreader.c \
gstbytereader.c \
gstbytewriter.c \
gstcollectpads.c \
gstpushsrc.c \
gsttypefindhelper.c \
@ -28,6 +29,7 @@ libgstbase_@GST_MAJORMINOR@include_HEADERS = \
gstbasetransform.h \
gstbitreader.h \
gstbytereader.h \
gstbytewriter.h \
gstcollectpads.h \
gstpushsrc.h \
gsttypefindhelper.h \

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@ -0,0 +1,805 @@
/* GStreamer byte writer
*
* Copyright (C) 2009 Sebastian Dröge <sebastian.droege@collabora.co.uk>.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "gstbytewriter.h"
#include <string.h>
/**
* SECTION:gstbytewriter
* @short_description: Writes different integer, string and floating point
* types to a memory buffer and allows reading
*
* #GstByteWriter provides a byte writer and reader that can write/read different
* integer and floating point types to/from a memory buffer. It provides functions
* for writing/reading signed/unsigned, little/big endian integers of 8, 16, 24,
* 32 and 64 bits and functions for reading little/big endian floating points numbers of
* 32 and 64 bits. It also provides functions to write/read NUL-terminated strings
* in various character encodings.
*/
/**
* gst_byte_writer_new:
*
* Creates a new, empty #GstByteWriter instance
*
* Returns: a new, empty #GstByteWriter instance
*
* Since: 0.10.26
*/
GstByteWriter *
gst_byte_writer_new (void)
{
GstByteWriter *ret = g_slice_new0 (GstByteWriter);
ret->owned = TRUE;
return ret;
}
/**
* gst_byte_writer_new_with_size:
* @size: Initial size of data
* @fixed: If %TRUE the data can't be reallocated
*
* Creates a new #GstByteWriter instance with the given
* initial data size.
*
* Returns: a new #GstByteWriter instance
*
* Since: 0.10.26
*/
GstByteWriter *
gst_byte_writer_new_with_size (guint size, gboolean fixed)
{
GstByteWriter *ret = gst_byte_writer_new ();
ret->alloc_size = size;
ret->parent.data = g_malloc (ret->alloc_size);
ret->fixed = fixed;
ret->owned = TRUE;
return ret;
}
/**
* gst_byte_writer_new_with_data:
* @data: Memory area for writing
* @size: Size of @data in bytes
* @initialized: If %TRUE the complete data can be read from the beginning
*
* Creates a new #GstByteWriter instance with the given
* memory area. If @initialized is %TRUE it is possible to
* read @size bytes from the #GstByteWriter from the beginning.
*
* Returns: a new #GstByteWriter instance
*
* Since: 0.10.26
*/
GstByteWriter *
gst_byte_writer_new_with_data (guint8 * data, guint size, gboolean initialized)
{
GstByteWriter *ret = gst_byte_writer_new ();
ret->parent.data = data;
ret->parent.size = (initialized) ? size : 0;
ret->alloc_size = size;
ret->fixed = TRUE;
ret->owned = FALSE;
return ret;
}
/**
* gst_byte_writer_new_with_buffer:
* @buffer: Buffer used for writing
* @initialized: If %TRUE the complete data can be read from the beginning
*
* Creates a new #GstByteWriter instance with the given
* buffer. If @initialized is %TRUE it is possible to
* read the complete buffer from the #GstByteWriter from the beginning.
*
* <note>@buffer must be writable</note>
*
* Returns: a new #GstByteWriter instance
*
* Since: 0.10.26
*/
GstByteWriter *
gst_byte_writer_new_with_buffer (GstBuffer * buffer, gboolean initialized)
{
g_return_val_if_fail (GST_IS_BUFFER (buffer)
&& gst_buffer_is_writable (buffer), NULL);
return gst_byte_writer_new_with_data (GST_BUFFER_DATA (buffer),
GST_BUFFER_SIZE (buffer), initialized);
}
/**
* gst_byte_writer_init:
* @writer: #GstByteWriter instance
*
* Initializes @writer to an empty instance
*
* Since: 0.10.26
*/
void
gst_byte_writer_init (GstByteWriter * writer)
{
g_return_if_fail (writer != NULL);
memset (writer, 0, sizeof (GstByteWriter));
writer->owned = TRUE;
}
/**
* gst_byte_writer_init_with_size:
* @writer: #GstByteWriter instance
* @size: Initial size of data
* @fixed: If %TRUE the data can't be reallocated
*
* Initializes @writer with the given initial data size.
*
* Since: 0.10.26
*/
void
gst_byte_writer_init_with_size (GstByteWriter * writer, guint size,
gboolean fixed)
{
g_return_if_fail (writer != NULL);
gst_byte_writer_init (writer);
writer->parent.data = g_malloc (size);
writer->alloc_size = size;
writer->fixed = fixed;
writer->owned = TRUE;
}
/**
* gst_byte_writer_init_with_data:
* @writer: #GstByteWriter instance
* @data: Memory area for writing
* @size: Size of @data in bytes
* @initialized: If %TRUE the complete data can be read from the beginning
*
* Initializes @writer with the given
* memory area. If @initialized is %TRUE it is possible to
* read @size bytes from the #GstByteWriter from the beginning.
*
* Since: 0.10.26
*/
void
gst_byte_writer_init_with_data (GstByteWriter * writer, guint8 * data,
guint size, gboolean initialized)
{
g_return_if_fail (writer != NULL);
gst_byte_writer_init (writer);
writer->parent.data = data;
writer->parent.size = (initialized) ? size : 0;
writer->alloc_size = size;
writer->fixed = TRUE;
writer->owned = FALSE;
}
/**
* gst_byte_writer_init_with_buffer:
* @writer: #GstByteWriter instance
* @buffer: Buffer used for writing
* @initialized: If %TRUE the complete data can be read from the beginning
*
* Initializes @writer with the given
* buffer. If @initialized is %TRUE it is possible to
* read the complete buffer from the #GstByteWriter from the beginning.
*
* <note>@buffer must be writable</note>
*
* Since: 0.10.26
*/
void
gst_byte_writer_init_with_buffer (GstByteWriter * writer, GstBuffer * buffer,
gboolean initialized)
{
g_return_if_fail (GST_IS_BUFFER (buffer) && gst_buffer_is_writable (buffer));
gst_byte_writer_init_with_data (writer, GST_BUFFER_DATA (buffer),
GST_BUFFER_SIZE (buffer), initialized);
}
/**
* gst_byte_writer_reset:
* @writer: #GstByteWriter instance
*
* Resets @writer and frees the data if it's
* owned by @writer.
*
* Since: 0.10.26
*/
void
gst_byte_writer_reset (GstByteWriter * writer)
{
g_return_if_fail (writer != NULL);
if (writer->owned)
g_free ((guint8 *) writer->parent.data);
memset (writer, 0, sizeof (GstByteWriter));
}
/**
* gst_byte_writer_reset_and_get_data:
* @writer: #GstByteWriter instance
*
* Resets @writer and returns the current data.
*
* Returns: the current data. g_free() after usage.
*
* Since: 0.10.26
*/
guint8 *
gst_byte_writer_reset_and_get_data (GstByteWriter * writer)
{
guint8 *data;
g_return_val_if_fail (writer != NULL, NULL);
data = (guint8 *) writer->parent.data;
if (!writer->owned)
data = g_memdup (data, writer->parent.size);
writer->parent.data = NULL;
gst_byte_writer_reset (writer);
return data;
}
/**
* gst_byte_writer_reset_and_get_buffer:
* @writer: #GstByteWriter instance
*
* Resets @writer and returns the current data as buffer.
*
* Returns: the current data as buffer. gst_buffer_unref() after usage.
*
* Since: 0.10.26
*/
GstBuffer *
gst_byte_writer_reset_and_get_buffer (GstByteWriter * writer)
{
GstBuffer *buffer;
g_return_val_if_fail (writer != NULL, NULL);
buffer = gst_buffer_new ();
GST_BUFFER_SIZE (buffer) = writer->parent.size;
GST_BUFFER_MALLOCDATA (buffer) = gst_byte_writer_reset_and_get_data (writer);
GST_BUFFER_DATA (buffer) = GST_BUFFER_MALLOCDATA (buffer);
return buffer;
}
/**
* gst_byte_writer_free:
* @writer: #GstByteWriter instance
*
* Frees @writer and all memory allocated by it.
*
* Since: 0.10.26
*/
void
gst_byte_writer_free (GstByteWriter * writer)
{
g_return_if_fail (writer != NULL);
gst_byte_writer_reset (writer);
g_slice_free (GstByteWriter, writer);
}
/**
* gst_byte_writer_free_and_get_data:
* @writer: #GstByteWriter instance
*
* Frees @writer and all memory allocated by it except
* the current data, which is returned.
*
* Returns: the current data. g_free() after usage.
*
* Since: 0.10.26
*/
guint8 *
gst_byte_writer_free_and_get_data (GstByteWriter * writer)
{
guint8 *data;
g_return_val_if_fail (writer != NULL, NULL);
data = gst_byte_writer_reset_and_get_data (writer);
g_slice_free (GstByteWriter, writer);
return data;
}
/**
* gst_byte_writer_free_and_get_buffer:
* @writer: #GstByteWriter instance
*
* Frees @writer and all memory allocated by it except
* the current data, which is returned as #GstBuffer.
*
* Returns: the current data as buffer. gst_buffer_unref() after usage.
*
* Since: 0.10.26
*/
GstBuffer *
gst_byte_writer_free_and_get_buffer (GstByteWriter * writer)
{
GstBuffer *buffer;
g_return_val_if_fail (writer != NULL, NULL);
buffer = gst_byte_writer_reset_and_get_buffer (writer);
g_slice_free (GstByteWriter, writer);
return buffer;
}
/**
* gst_byte_writer_get_remaining:
* @writer: #GstByteWriter instance
*
* Returns the remaining size of data that can still be written. If
* -1 is returned the remaining size is only limited by system resources.
*
* Returns: the remaining size of data that can still be written
*
* Since: 0.10.26
*/
guint
gst_byte_writer_get_remaining (const GstByteWriter * writer)
{
g_return_val_if_fail (writer != NULL, -1);
if (!writer->fixed)
return -1;
else
return writer->alloc_size - writer->parent.byte;
}
static guint
_next_pow2 (guint n)
{
guint ret = 16;
/* We start with 16, smaller allocations make no sense */
while (ret < n)
ret <<= 1;
return ret;
}
/**
* gst_byte_writer_ensure_free_space:
* @writer: #GstByteWriter instance
* @size: Number of bytes that should be available
*
* Checks if enough free space from the current write cursor is
* available and reallocates if necessary.
*
* Returns: %TRUE if at least @size bytes are still available
*
* Since: 0.10.26
*/
gboolean
gst_byte_writer_ensure_free_space (GstByteWriter * writer, guint size)
{
guint8 *data;
if (G_UNLIKELY (size <= writer->alloc_size - writer->parent.byte))
return TRUE;
if (G_UNLIKELY (writer->fixed || !writer->owned))
return FALSE;
if (G_UNLIKELY (writer->parent.byte > G_MAXUINT - size))
return FALSE;
writer->alloc_size = _next_pow2 (writer->parent.byte + size);
data = g_try_realloc ((guint8 *) writer->parent.data, writer->alloc_size);
if (G_UNLIKELY (data == NULL))
return FALSE;
writer->parent.data = data;
return TRUE;
}
#define CREATE_WRITE_FUNC(bits,type,name,write_func) \
gboolean \
gst_byte_writer_put_##name (GstByteWriter *writer, type val) \
{ \
g_return_val_if_fail (writer != NULL, FALSE); \
\
if (G_UNLIKELY (!gst_byte_writer_ensure_free_space(writer, bits/8))) \
return FALSE; \
\
write_func ((guint8 *) &writer->parent.data[writer->parent.byte], val); \
writer->parent.byte += bits/8; \
writer->parent.size = MAX (writer->parent.size, writer->parent.byte); \
\
return TRUE; \
}
CREATE_WRITE_FUNC (8, guint8, uint8, GST_WRITE_UINT8);
CREATE_WRITE_FUNC (8, gint8, int8, GST_WRITE_UINT8);
CREATE_WRITE_FUNC (16, guint16, uint16_le, GST_WRITE_UINT16_LE);
CREATE_WRITE_FUNC (16, guint16, uint16_be, GST_WRITE_UINT16_BE);
CREATE_WRITE_FUNC (16, gint16, int16_le, GST_WRITE_UINT16_LE);
CREATE_WRITE_FUNC (16, gint16, int16_be, GST_WRITE_UINT16_BE);
CREATE_WRITE_FUNC (24, guint32, uint24_le, GST_WRITE_UINT24_LE);
CREATE_WRITE_FUNC (24, guint32, uint24_be, GST_WRITE_UINT24_BE);
CREATE_WRITE_FUNC (24, gint32, int24_le, GST_WRITE_UINT24_LE);
CREATE_WRITE_FUNC (24, gint32, int24_be, GST_WRITE_UINT24_BE);
CREATE_WRITE_FUNC (32, guint32, uint32_le, GST_WRITE_UINT32_LE);
CREATE_WRITE_FUNC (32, guint32, uint32_be, GST_WRITE_UINT32_BE);
CREATE_WRITE_FUNC (32, gint32, int32_le, GST_WRITE_UINT32_LE);
CREATE_WRITE_FUNC (32, gint32, int32_be, GST_WRITE_UINT32_BE);
CREATE_WRITE_FUNC (64, guint64, uint64_le, GST_WRITE_UINT64_LE);
CREATE_WRITE_FUNC (64, guint64, uint64_be, GST_WRITE_UINT64_BE);
CREATE_WRITE_FUNC (64, gint64, int64_le, GST_WRITE_UINT64_LE);
CREATE_WRITE_FUNC (64, gint64, int64_be, GST_WRITE_UINT64_BE);
CREATE_WRITE_FUNC (32, gfloat, float32_be, GST_WRITE_FLOAT_BE);
CREATE_WRITE_FUNC (32, gfloat, float32_le, GST_WRITE_FLOAT_LE);
CREATE_WRITE_FUNC (64, gdouble, float64_be, GST_WRITE_DOUBLE_BE);
CREATE_WRITE_FUNC (64, gdouble, float64_le, GST_WRITE_DOUBLE_LE);
gboolean
gst_byte_writer_put_data (GstByteWriter * writer, const guint8 * data,
guint size)
{
g_return_val_if_fail (writer != NULL, FALSE);
if (G_UNLIKELY (!gst_byte_writer_ensure_free_space (writer, size)))
return FALSE;
memcpy ((guint8 *) & writer->parent.data[writer->parent.byte], data, size);
writer->parent.byte += size;
writer->parent.size = MAX (writer->parent.size, writer->parent.byte);
return TRUE;
}
#define CREATE_WRITE_STRING_FUNC(bits,type) \
gboolean \
gst_byte_writer_put_string_utf##bits (GstByteWriter *writer, const type * data) \
{ \
guint size = 0; \
g_return_val_if_fail (writer != NULL, FALSE); \
\
/* endianness does not matter if we are looking for a NUL terminator */ \
while (data[size] != 0) { \
/* have prevent overflow */ \
if (G_UNLIKELY (size == G_MAXUINT)) \
return FALSE; \
++size; \
} \
++size; \
\
if (G_UNLIKELY (!gst_byte_writer_ensure_free_space(writer, size * (bits / 8)))) \
return FALSE; \
\
gst_byte_writer_put_data (writer, (const guint8 *) data, size * (bits / 8)); \
\
return TRUE; \
}
CREATE_WRITE_STRING_FUNC (8, gchar);
CREATE_WRITE_STRING_FUNC (16, guint16);
CREATE_WRITE_STRING_FUNC (32, guint32);
/**
* gst_byte_writer_put_uint8:
* @writer: #GstByteWriter instance
* @val: Value to write
*
* Writes a unsigned 8 bit integer to @writer.
*
* Returns: %TRUE if the value could be written
*
* Since: 0.10.26
*/
/**
* gst_byte_writer_put_uint16_be:
* @writer: #GstByteWriter instance
* @val: Value to write
*
* Writes a unsigned big endian 16 bit integer to @writer.
*
* Returns: %TRUE if the value could be written
*
* Since: 0.10.26
*/
/**
* gst_byte_writer_put_uint24_be:
* @writer: #GstByteWriter instance
* @val: Value to write
*
* Writes a unsigned big endian 24 bit integer to @writer.
*
* Returns: %TRUE if the value could be written
*
* Since: 0.10.26
*/
/**
* gst_byte_writer_put_uint32_be:
* @writer: #GstByteWriter instance
* @val: Value to write
*
* Writes a unsigned big endian 32 bit integer to @writer.
*
* Returns: %TRUE if the value could be written
*
* Since: 0.10.26
*/
/**
* gst_byte_writer_put_uint64_be:
* @writer: #GstByteWriter instance
* @val: Value to write
*
* Writes a unsigned big endian 64 bit integer to @writer.
*
* Returns: %TRUE if the value could be written
*
* Since: 0.10.26
*/
/**
* gst_byte_writer_put_uint16_le:
* @writer: #GstByteWriter instance
* @val: Value to write
*
* Writes a unsigned little endian 16 bit integer to @writer.
*
* Returns: %TRUE if the value could be written
*
* Since: 0.10.26
*/
/**
* gst_byte_writer_put_uint24_le:
* @writer: #GstByteWriter instance
* @val: Value to write
*
* Writes a unsigned little endian 24 bit integer to @writer.
*
* Returns: %TRUE if the value could be written
*
* Since: 0.10.26
*/
/**
* gst_byte_writer_put_uint32_le:
* @writer: #GstByteWriter instance
* @val: Value to write
*
* Writes a unsigned little endian 32 bit integer to @writer.
*
* Returns: %TRUE if the value could be written
*
* Since: 0.10.26
*/
/**
* gst_byte_writer_put_uint64_le:
* @writer: #GstByteWriter instance
* @val: Value to write
*
* Writes a unsigned little endian 64 bit integer to @writer.
*
* Returns: %TRUE if the value could be written
*
* Since: 0.10.26
*/
/**
* gst_byte_writer_put_int8:
* @writer: #GstByteWriter instance
* @val: Value to write
*
* Writes a signed 8 bit integer to @writer.
*
* Returns: %TRUE if the value could be written
*
* Since: 0.10.26
*/
/**
* gst_byte_writer_put_int16_be:
* @writer: #GstByteWriter instance
* @val: Value to write
*
* Writes a signed big endian 16 bit integer to @writer.
*
* Returns: %TRUE if the value could be written
*
* Since: 0.10.26
*/
/**
* gst_byte_writer_put_int24_be:
* @writer: #GstByteWriter instance
* @val: Value to write
*
* Writes a signed big endian 24 bit integer to @writer.
*
* Returns: %TRUE if the value could be written
*
* Since: 0.10.26
*/
/**
* gst_byte_writer_put_int32_be:
* @writer: #GstByteWriter instance
* @val: Value to write
*
* Writes a signed big endian 32 bit integer to @writer.
*
* Returns: %TRUE if the value could be written
*
* Since: 0.10.26
*/
/**
* gst_byte_writer_put_int64_be:
* @writer: #GstByteWriter instance
* @val: Value to write
*
* Writes a signed big endian 64 bit integer to @writer.
*
* Returns: %TRUE if the value could be written
*
* Since: 0.10.26
*/
/**
* gst_byte_writer_put_int16_le:
* @writer: #GstByteWriter instance
* @val: Value to write
*
* Writes a signed little endian 16 bit integer to @writer.
*
* Returns: %TRUE if the value could be written
*
* Since: 0.10.26
*/
/**
* gst_byte_writer_put_int24_le:
* @writer: #GstByteWriter instance
* @val: Value to write
*
* Writes a signed little endian 24 bit integer to @writer.
*
* Returns: %TRUE if the value could be written
*
* Since: 0.10.26
*/
/**
* gst_byte_writer_put_int32_le:
* @writer: #GstByteWriter instance
* @val: Value to write
*
* Writes a signed little endian 32 bit integer to @writer.
*
* Returns: %TRUE if the value could be written
*
* Since: 0.10.26
*/
/**
* gst_byte_writer_put_int64_le:
* @writer: #GstByteWriter instance
* @val: Value to write
*
* Writes a signed little endian 64 bit integer to @writer.
*
* Returns: %TRUE if the value could be written
*
* Since: 0.10.26
*/
/**
* gst_byte_writer_put_float_be:
* @writer: #GstByteWriter instance
* @val: Value to write
*
* Writes a big endian 32 bit float to @writer.
*
* Returns: %TRUE if the value could be written
*
* Since: 0.10.26
*/
/**
* gst_byte_writer_put_double_be:
* @writer: #GstByteWriter instance
* @val: Value to write
*
* Writes a big endian 64 bit float to @writer.
*
* Returns: %TRUE if the value could be written
*
* Since: 0.10.26
*/
/**
* gst_byte_writer_put_float_le:
* @writer: #GstByteWriter instance
* @val: Value to write
*
* Writes a little endian 32 bit float to @writer.
*
* Returns: %TRUE if the value could be written
*
* Since: 0.10.26
*/
/**
* gst_byte_writer_put_double_le:
* @writer: #GstByteWriter instance
* @val: Value to write
*
* Writes a little endian 64 bit float to @writer.
*
* Returns: %TRUE if the value could be written
*
* Since: 0.10.26
*/
/**
* gst_byte_writer_put_string_utf8:
* @writer: #GstByteWriter instance
* @data: UTF8 string to write
*
* Writes a null-terminated UTF8 string to @writer.
*
* Returns: %TRUE if the value could be written
*
* Since: 0.10.26
*/
/**
* gst_byte_writer_put_string_utf16:
* @writer: #GstByteWriter instance
* @data: UTF16 string to write
*
* Writes a null-terminated UTF16 string to @writer.
*
* Returns: %TRUE if the value could be written
*
* Since: 0.10.26
*/
/**
* gst_byte_writer_put_string_utf32:
* @writer: #GstByteWriter instance
* @data: UTF32 string to write
*
* Writes a null-terminated UTF32 string to @writer.
*
* Returns: %TRUE if the value could be written
*
* Since: 0.10.26
*/
/**
* gst_byte_writer_put_data:
* @writer: #GstByteWriter instance
* @data: Data to write
* @size: Size of @data in bytes
*
* Writes @size bytes of @data to @writer.
*
* Returns: %TRUE if the value could be written
*
* Since: 0.10.26
*/

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@ -0,0 +1,167 @@
/* GStreamer byte writer
*
* Copyright (C) 2009 Sebastian Dröge <sebastian.droege@collabora.co.uk>.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#ifndef __GST_BYTE_WRITER_H__
#define __GST_BYTE_WRITER_H__
#include <gst/gst.h>
#include <gst/base/gstbytereader.h>
G_BEGIN_DECLS
#define GST_BYTE_WRITER(writer) ((GstByteWriter *) (writer))
/**
* GstByteWriter:
* @parent: #GstByteReader parent
* @alloc_size: Allocation size of the data
* @fixed: If %TRUE no reallocations are allowed
* @owned: If %FALSE no reallocations are allowed and copies of data are returned
*
* A byte writer instance.
*/
typedef struct {
GstByteReader parent;
guint alloc_size;
gboolean fixed;
gboolean owned;
} GstByteWriter;
GstByteWriter * gst_byte_writer_new (void);
GstByteWriter * gst_byte_writer_new_with_size (guint size, gboolean fixed);
GstByteWriter * gst_byte_writer_new_with_data (guint8 *data, guint size, gboolean initialized);
GstByteWriter * gst_byte_writer_new_with_buffer (GstBuffer *buffer, gboolean initialized);
void gst_byte_writer_init (GstByteWriter *writer);
void gst_byte_writer_init_with_size (GstByteWriter *writer, guint size, gboolean fixed);
void gst_byte_writer_init_with_data (GstByteWriter *writer, guint8 *data, guint size, gboolean initialized);
void gst_byte_writer_init_with_buffer (GstByteWriter *writer, GstBuffer *buffer, gboolean initialized);
void gst_byte_writer_free (GstByteWriter *writer);
guint8 * gst_byte_writer_free_and_get_data (GstByteWriter *writer);
GstBuffer *gst_byte_writer_free_and_get_buffer (GstByteWriter *writer);
void gst_byte_writer_reset (GstByteWriter *writer);
guint8 * gst_byte_writer_reset_and_get_data (GstByteWriter *writer);
GstBuffer *gst_byte_writer_reset_and_get_data_as_buffer (GstByteWriter *writer);
/**
* gst_byte_writer_get_pos:
* @writer: #GstByteWriter instance
*
* Returns: The current position of the read/write cursor
*
* Since: 0.10.26
*/
/**
* gst_byte_writer_set_pos:
* @writer: #GstByteWriter instance
* @pos: new position
*
* Sets the current read/write cursor of @writer. The new position
* can only be between 0 and the current size.
*
* Returns: %TRUE if the new position could be set
*
* Since: 0.10.26
*/
/**
* gst_byte_writer_get_size:
* @writer: #GstByteWriter instance
*
* Returns: The current, initialized size of the data
*
* Since: 0.10.26
*/
#ifdef _FOOL_GTK_DOC
G_INLINE_FUNC guint gst_byte_writer_get_pos (const GstByteWriter *writer);
G_INLINE_FUNC gboolean gst_byte_writer_set_pos (const GstByteWriter *writer, guint pos);
G_INLINE_FUNC guint gst_byte_writer_get_size (const GstByteWriter *writer);
#else
static inline guint
gst_byte_writer_get_pos (const GstByteWriter *writer)
{
return gst_byte_reader_get_pos (GST_BYTE_READER (writer));
}
static inline gboolean
gst_byte_writer_set_pos (const GstByteWriter *writer, guint pos)
{
return gst_byte_reader_set_pos (GST_BYTE_READER (writer), pos);
}
static inline guint
gst_byte_writer_get_size (const GstByteWriter *writer)
{
return gst_byte_reader_get_size (GST_BYTE_READER (writer));
}
#endif
guint gst_byte_writer_get_remaining (const GstByteWriter *writer);
gboolean gst_byte_writer_ensure_free_space (GstByteWriter *writer, guint size);
gboolean gst_byte_writer_put_uint8 (GstByteWriter *writer, guint8 val);
gboolean gst_byte_writer_put_int8 (GstByteWriter *writer, gint8 val);
gboolean gst_byte_writer_put_uint16_be (GstByteWriter *writer, guint16 val);
gboolean gst_byte_writer_put_uint16_le (GstByteWriter *writer, guint16 val);
gboolean gst_byte_writer_put_int16_be (GstByteWriter *writer, gint16 val);
gboolean gst_byte_writer_put_int16_le (GstByteWriter *writer, gint16 val);
gboolean gst_byte_writer_put_uint24_be (GstByteWriter *writer, guint32 val);
gboolean gst_byte_writer_put_uint24_le (GstByteWriter *writer, guint32 val);
gboolean gst_byte_writer_put_int24_be (GstByteWriter *writer, gint32 val);
gboolean gst_byte_writer_put_int24_le (GstByteWriter *writer, gint32 val);
gboolean gst_byte_writer_put_uint32_be (GstByteWriter *writer, guint32 val);
gboolean gst_byte_writer_put_uint32_le (GstByteWriter *writer, guint32 val);
gboolean gst_byte_writer_put_int32_be (GstByteWriter *writer, gint32 val);
gboolean gst_byte_writer_put_int32_le (GstByteWriter *writer, gint32 val);
gboolean gst_byte_writer_put_uint64_be (GstByteWriter *writer, guint64 val);
gboolean gst_byte_writer_put_uint64_le (GstByteWriter *writer, guint64 val);
gboolean gst_byte_writer_put_int64_be (GstByteWriter *writer, gint64 val);
gboolean gst_byte_writer_put_int64_le (GstByteWriter *writer, gint64 val);
gboolean gst_byte_writer_put_float_be (GstByteWriter *writer, gfloat val);
gboolean gst_byte_writer_put_float_le (GstByteWriter *writer, gfloat val);
gboolean gst_byte_writer_put_double_be (GstByteWriter *writer, gdouble val);
gboolean gst_byte_writer_put_double_le (GstByteWriter *writer, gdouble val);
gboolean gst_byte_writer_put_data (GstByteWriter *writer, const guint8 *data, guint size);
gboolean gst_byte_writer_put_string_utf8 (GstByteWriter *writer, const gchar *data);
gboolean gst_byte_writer_put_string_utf16 (GstByteWriter *writer, const guint16 *data);
gboolean gst_byte_writer_put_string_utf32 (GstByteWriter *writer, const guint32 *data);
/**
* gst_byte_writer_put_string:
* @writer: #GstByteWriter instance
* @data: Null terminated string
*
* Write a null-terminated string to @writer.
*
* Returns: %TRUE if the string could be written
*
* Since: 0.10.26
*/
#define gst_byte_writer_put_string(writer, data) \
gst_byte_writer_put_string_utf8(writer, data)
G_END_DECLS
#endif /* __GST_BYTE_WRITER_H__ */