diff options
Diffstat (limited to 'gst/flacparse/gstbytereader.c')
-rw-r--r-- | gst/flacparse/gstbytereader.c | 1231 |
1 files changed, 0 insertions, 1231 deletions
diff --git a/gst/flacparse/gstbytereader.c b/gst/flacparse/gstbytereader.c deleted file mode 100644 index cb91ea79..00000000 --- a/gst/flacparse/gstbytereader.c +++ /dev/null @@ -1,1231 +0,0 @@ -/* GStreamer - * - * Copyright (C) 2008 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 "gstbytereader.h" - -#include <string.h> - -/** - * SECTION:gstbytereader - * @short_description: Reads different integer and floating point types from a memory buffer - * - * #GstByteReader provides a byte reader that can read different integer and - * floating point types from a memory buffer. It provides functions for 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. - */ - - -/* Copied from gst/floatcast/floatcast.h as this is in gst-plugins-base */ - -inline static gdouble -GDOUBLE_SWAP_LE_BE (gdouble in) -{ - union - { - guint64 i; - gdouble d; - } u; - - u.d = in; - u.i = GUINT64_SWAP_LE_BE (u.i); - return u.d; -} - -inline static gfloat -GFLOAT_SWAP_LE_BE (gfloat in) -{ - union - { - guint32 i; - gfloat f; - } u; - - u.f = in; - u.i = GUINT32_SWAP_LE_BE (u.i); - return u.f; -} - -#if G_BYTE_ORDER == G_LITTLE_ENDIAN -#define GFLOAT_TO_LE(val) ((gfloat) (val)) -#define GFLOAT_TO_BE(val) (GFLOAT_SWAP_LE_BE (val)) -#define GDOUBLE_TO_LE(val) ((gdouble) (val)) -#define GDOUBLE_TO_BE(val) (GDOUBLE_SWAP_LE_BE (val)) - -#elif G_BYTE_ORDER == G_BIG_ENDIAN -#define GFLOAT_TO_LE(val) (GFLOAT_SWAP_LE_BE (val)) -#define GFLOAT_TO_BE(val) ((gfloat) (val)) -#define GDOUBLE_TO_LE(val) (GDOUBLE_SWAP_LE_BE (val)) -#define GDOUBLE_TO_BE(val) ((gdouble) (val)) - -#else /* !G_LITTLE_ENDIAN && !G_BIG_ENDIAN */ -#error unknown ENDIAN type -#endif /* !G_LITTLE_ENDIAN && !G_BIG_ENDIAN */ - -#define GFLOAT_FROM_LE(val) (GFLOAT_TO_LE (val)) -#define GFLOAT_FROM_BE(val) (GFLOAT_TO_BE (val)) -#define GDOUBLE_FROM_LE(val) (GDOUBLE_TO_LE (val)) -#define GDOUBLE_FROM_BE(val) (GDOUBLE_TO_BE (val)) - - -/** - * gst_byte_reader_new: - * @data: Data from which the #GstByteReader should read - * @size: Size of @data in bytes - * - * Create a new #GstByteReader instance, which will read from @data. - * - * Returns: a new #GstByteReader instance - * - * Since: 0.10.22 - */ -GstByteReader * -gst_byte_reader_new (const guint8 * data, guint size) -{ - GstByteReader *ret = g_slice_new0 (GstByteReader); - - ret->data = data; - ret->size = size; - - return ret; -} - -/** - * gst_byte_reader_new_from_buffer: - * @buffer: Buffer from which the #GstByteReader should read - * - * Create a new #GstByteReader instance, which will read from the - * #GstBuffer @buffer. - * - * Returns: a new #GstByteReader instance - * - * Since: 0.10.22 - */ -GstByteReader * -gst_byte_reader_new_from_buffer (const GstBuffer * buffer) -{ - g_return_val_if_fail (GST_IS_BUFFER (buffer), NULL); - - return gst_byte_reader_new (GST_BUFFER_DATA (buffer), - GST_BUFFER_SIZE (buffer)); -} - -/** - * gst_byte_reader_free: - * @reader: a #GstByteReader instance - * - * Frees a #GstByteReader instance, which was previously allocated by - * gst_byte_reader_new() or gst_byte_reader_new_from_buffer(). - * - * Since: 0.10.22 - */ -void -gst_byte_reader_free (GstByteReader * reader) -{ - g_return_if_fail (reader != NULL); - - g_slice_free (GstByteReader, reader); -} - -/** - * gst_byte_reader_init: - * @reader: a #GstByteReader instance - * @data: Data from which the #GstByteReader should read - * @size: Size of @data in bytes - * - * Initializes a #GstByteReader instance to read from @data. This function - * can be called on already initialized instances. - * - * Since: 0.10.22 - */ -void -gst_byte_reader_init (GstByteReader * reader, const guint8 * data, guint size) -{ - g_return_if_fail (reader != NULL); - - reader->data = data; - reader->size = size; - reader->byte = 0; -} - -/** - * gst_byte_reader_init: - * @reader: a #GstByteReader instance - * @buffer: Buffer from which the #GstByteReader should read - * - * Initializes a #GstByteReader instance to read from @buffer. This function - * can be called on already initialized instances. - * - * Since: 0.10.22 - */ -void -gst_byte_reader_init_from_buffer (GstByteReader * reader, - const GstBuffer * buffer) -{ - g_return_if_fail (GST_IS_BUFFER (buffer)); - - gst_byte_reader_init (reader, GST_BUFFER_DATA (buffer), - GST_BUFFER_SIZE (buffer)); -} - -/** - * gst_byte_reader_set_pos: - * @reader: a #GstByteReader instance - * @pos: The new position in bytes - * - * Sets the new position of a #GstByteReader instance to @pos in bytes. - * - * Returns: %TRUE if the position could be set successfully, %FALSE - * otherwise. - * - * Since: 0.10.22 - */ -gboolean -gst_byte_reader_set_pos (GstByteReader * reader, guint pos) -{ - g_return_val_if_fail (reader != NULL, FALSE); - - if (pos > reader->size) - return FALSE; - - reader->byte = pos; - - return TRUE; -} - -/** - * gst_byte_reader_get_pos: - * @reader: a #GstByteReader instance - * - * Returns the current position of a #GstByteReader instance in bytes. - * - * Returns: The current position of @reader in bytes. - * - * Since: 0.10.22 - */ -guint -gst_byte_reader_get_pos (const GstByteReader * reader) -{ - g_return_val_if_fail (reader != NULL, 0); - - return reader->byte; -} - -/** - * gst_byte_reader_get_remaining: - * @reader: a #GstByteReader instance - * - * Returns the remaining number of bytes of a #GstByteReader instance. - * - * Returns: The remaining number of bytes of @reader instance. - * - * Since: 0.10.22 - */ -guint -gst_byte_reader_get_remaining (const GstByteReader * reader) -{ - g_return_val_if_fail (reader != NULL, 0); - - return reader->size - reader->byte; -} - -/** - * gst_byte_reader_skip: - * @reader: a #GstByteReader instance - * @nbytes: the number of bytes to skip - * - * Skips @nbytes bytes of the #GstByteReader instance. - * - * Returns: %TRUE if @nbytes bytes could be skipped, %FALSE otherwise. - * - * Since: 0.10.22 - */ -gboolean -gst_byte_reader_skip (GstByteReader * reader, guint nbytes) -{ - g_return_val_if_fail (reader != NULL, FALSE); - - if (gst_byte_reader_get_remaining (reader) < nbytes) - return FALSE; - - reader->byte += nbytes; - - return TRUE; -} - -/** - * gst_byte_reader_get_uint8: - * @reader: a #GstByteReader instance - * @val: Pointer to a #guint8 to store the result - * - * Read an unsigned 8 bit integer into @val and update the current position. - * - * Returns: %TRUE if successful, %FALSE otherwise. - * - * Since: 0.10.22 - */ - -/** - * gst_byte_reader_get_int8: - * @reader: a #GstByteReader instance - * @val: Pointer to a #gint8 to store the result - * - * Read a signed 8 bit integer into @val and update the current position. - * - * Returns: %TRUE if successful, %FALSE otherwise. - * - * Since: 0.10.22 - */ - -/** - * gst_byte_reader_peek_uint8: - * @reader: a #GstByteReader instance - * @val: Pointer to a #guint8 to store the result - * - * Read a signed 8 bit integer into @val but keep the current position. - * - * Returns: %TRUE if successful, %FALSE otherwise. - * - * Since: 0.10.22 - */ - -/** - * gst_byte_reader_peek_int8: - * @reader: a #GstByteReader instance - * @val: Pointer to a #gint8 to store the result - * - * Read a signed 8 bit integer into @val but keep the current position. - * - * Returns: %TRUE if successful, %FALSE otherwise. - * - * Since: 0.10.22 - */ - -/** - * gst_byte_reader_get_uint16_le: - * @reader: a #GstByteReader instance - * @val: Pointer to a #guint16 to store the result - * - * Read an unsigned 16 bit little endian integer into @val - * and update the current position. - * - * Returns: %TRUE if successful, %FALSE otherwise. - * - * Since: 0.10.22 - */ - -/** - * gst_byte_reader_get_int16_le: - * @reader: a #GstByteReader instance - * @val: Pointer to a #gint16 to store the result - * - * Read a signed 16 bit little endian integer into @val - * and update the current position. - * - * Returns: %TRUE if successful, %FALSE otherwise. - * - * Since: 0.10.22 - */ - -/** - * gst_byte_reader_peek_uint16_le: - * @reader: a #GstByteReader instance - * @val: Pointer to a #guint16 to store the result - * - * Read a signed 16 bit little endian integer into @val - * but keep the current position. - * - * Returns: %TRUE if successful, %FALSE otherwise. - * - * Since: 0.10.22 - */ - -/** - * gst_byte_reader_peek_int16_le: - * @reader: a #GstByteReader instance - * @val: Pointer to a #gint16 to store the result - * - * Read a signed 16 bit little endian integer into @val - * but keep the current position. - * - * Returns: %TRUE if successful, %FALSE otherwise. - * - * Since: 0.10.22 - */ - -/** - * gst_byte_reader_get_uint16_be: - * @reader: a #GstByteReader instance - * @val: Pointer to a #guint16 to store the result - * - * Read an unsigned 16 bit big endian integer into @val - * and update the current position. - * - * Returns: %TRUE if successful, %FALSE otherwise. - * - * Since: 0.10.22 - */ - -/** - * gst_byte_reader_get_int16_be: - * @reader: a #GstByteReader instance - * @val: Pointer to a #gint16 to store the result - * - * Read a signed 16 bit big endian integer into @val - * and update the current position. - * - * Returns: %TRUE if successful, %FALSE otherwise. - * - * Since: 0.10.22 - */ - -/** - * gst_byte_reader_peek_uint16_be: - * @reader: a #GstByteReader instance - * @val: Pointer to a #guint16 to store the result - * - * Read a signed 16 bit big endian integer into @val - * but keep the current position. - * - * Returns: %TRUE if successful, %FALSE otherwise. - * - * Since: 0.10.22 - */ - -/** - * gst_byte_reader_peek_int16_be: - * @reader: a #GstByteReader instance - * @val: Pointer to a #gint16 to store the result - * - * Read a signed 16 bit big endian integer into @val - * but keep the current position. - * - * Returns: %TRUE if successful, %FALSE otherwise. - * - * Since: 0.10.22 - */ - -/** - * gst_byte_reader_get_uint24_le: - * @reader: a #GstByteReader instance - * @val: Pointer to a #guint32 to store the result - * - * Read an unsigned 24 bit little endian integer into @val - * and update the current position. - * - * Returns: %TRUE if successful, %FALSE otherwise. - * - * Since: 0.10.22 - */ - -/** - * gst_byte_reader_get_int24_le: - * @reader: a #GstByteReader instance - * @val: Pointer to a #gint32 to store the result - * - * Read a signed 24 bit little endian integer into @val - * and update the current position. - * - * Returns: %TRUE if successful, %FALSE otherwise. - * - * Since: 0.10.22 - */ - -/** - * gst_byte_reader_peek_uint24_le: - * @reader: a #GstByteReader instance - * @val: Pointer to a #guint32 to store the result - * - * Read a signed 24 bit little endian integer into @val - * but keep the current position. - * - * Returns: %TRUE if successful, %FALSE otherwise. - * - * Since: 0.10.22 - */ - -/** - * gst_byte_reader_peek_int24_le: - * @reader: a #GstByteReader instance - * @val: Pointer to a #gint32 to store the result - * - * Read a signed 24 bit little endian integer into @val - * but keep the current position. - * - * Returns: %TRUE if successful, %FALSE otherwise. - * - * Since: 0.10.22 - */ - -/** - * gst_byte_reader_get_uint24_be: - * @reader: a #GstByteReader instance - * @val: Pointer to a #guint32 to store the result - * - * Read an unsigned 24 bit big endian integer into @val - * and update the current position. - * - * Returns: %TRUE if successful, %FALSE otherwise. - * - * Since: 0.10.22 - */ - -/** - * gst_byte_reader_get_int24_be: - * @reader: a #GstByteReader instance - * @val: Pointer to a #gint32 to store the result - * - * Read a signed 24 bit big endian integer into @val - * and update the current position. - * - * Returns: %TRUE if successful, %FALSE otherwise. - * - * Since: 0.10.22 - */ - -/** - * gst_byte_reader_peek_uint24_be: - * @reader: a #GstByteReader instance - * @val: Pointer to a #guint32 to store the result - * - * Read a signed 24 bit big endian integer into @val - * but keep the current position. - * - * Returns: %TRUE if successful, %FALSE otherwise. - * - * Since: 0.10.22 - */ - -/** - * gst_byte_reader_peek_int24_be: - * @reader: a #GstByteReader instance - * @val: Pointer to a #gint32 to store the result - * - * Read a signed 24 bit big endian integer into @val - * but keep the current position. - * - * Returns: %TRUE if successful, %FALSE otherwise. - * - * Since: 0.10.22 - */ - - -/** - * gst_byte_reader_get_uint32_le: - * @reader: a #GstByteReader instance - * @val: Pointer to a #guint32 to store the result - * - * Read an unsigned 32 bit little endian integer into @val - * and update the current position. - * - * Returns: %TRUE if successful, %FALSE otherwise. - * - * Since: 0.10.22 - */ - -/** - * gst_byte_reader_get_int32_le: - * @reader: a #GstByteReader instance - * @val: Pointer to a #gint32 to store the result - * - * Read a signed 32 bit little endian integer into @val - * and update the current position. - * - * Returns: %TRUE if successful, %FALSE otherwise. - * - * Since: 0.10.22 - */ - -/** - * gst_byte_reader_peek_uint32_le: - * @reader: a #GstByteReader instance - * @val: Pointer to a #guint32 to store the result - * - * Read a signed 32 bit little endian integer into @val - * but keep the current position. - * - * Returns: %TRUE if successful, %FALSE otherwise. - * - * Since: 0.10.22 - */ - -/** - * gst_byte_reader_peek_int32_le: - * @reader: a #GstByteReader instance - * @val: Pointer to a #gint32 to store the result - * - * Read a signed 32 bit little endian integer into @val - * but keep the current position. - * - * Returns: %TRUE if successful, %FALSE otherwise. - * - * Since: 0.10.22 - */ - -/** - * gst_byte_reader_get_uint32_be: - * @reader: a #GstByteReader instance - * @val: Pointer to a #guint32 to store the result - * - * Read an unsigned 32 bit big endian integer into @val - * and update the current position. - * - * Returns: %TRUE if successful, %FALSE otherwise. - * - * Since: 0.10.22 - */ - -/** - * gst_byte_reader_get_int32_be: - * @reader: a #GstByteReader instance - * @val: Pointer to a #gint32 to store the result - * - * Read a signed 32 bit big endian integer into @val - * and update the current position. - * - * Returns: %TRUE if successful, %FALSE otherwise. - * - * Since: 0.10.22 - */ - -/** - * gst_byte_reader_peek_uint32_be: - * @reader: a #GstByteReader instance - * @val: Pointer to a #guint32 to store the result - * - * Read a signed 32 bit big endian integer into @val - * but keep the current position. - * - * Returns: %TRUE if successful, %FALSE otherwise. - * - * Since: 0.10.22 - */ - -/** - * gst_byte_reader_peek_int32_be: - * @reader: a #GstByteReader instance - * @val: Pointer to a #gint32 to store the result - * - * Read a signed 32 bit big endian integer into @val - * but keep the current position. - * - * Returns: %TRUE if successful, %FALSE otherwise. - * - * Since: 0.10.22 - */ - -/** - * gst_byte_reader_get_uint64_le: - * @reader: a #GstByteReader instance - * @val: Pointer to a #guint64 to store the result - * - * Read an unsigned 64 bit little endian integer into @val - * and update the current position. - * - * Returns: %TRUE if successful, %FALSE otherwise. - * - * Since: 0.10.22 - */ - -/** - * gst_byte_reader_get_int64_le: - * @reader: a #GstByteReader instance - * @val: Pointer to a #gint64 to store the result - * - * Read a signed 64 bit little endian integer into @val - * and update the current position. - * - * Returns: %TRUE if successful, %FALSE otherwise. - * - * Since: 0.10.22 - */ - -/** - * gst_byte_reader_peek_uint64_le: - * @reader: a #GstByteReader instance - * @val: Pointer to a #guint64 to store the result - * - * Read a signed 64 bit little endian integer into @val - * but keep the current position. - * - * Returns: %TRUE if successful, %FALSE otherwise. - * - * Since: 0.10.22 - */ - -/** - * gst_byte_reader_peek_int64_le: - * @reader: a #GstByteReader instance - * @val: Pointer to a #gint64 to store the result - * - * Read a signed 64 bit little endian integer into @val - * but keep the current position. - * - * Returns: %TRUE if successful, %FALSE otherwise. - * - * Since: 0.10.22 - */ - -/** - * gst_byte_reader_get_uint64_be: - * @reader: a #GstByteReader instance - * @val: Pointer to a #guint64 to store the result - * - * Read an unsigned 64 bit big endian integer into @val - * and update the current position. - * - * Returns: %TRUE if successful, %FALSE otherwise. - * - * Since: 0.10.22 - */ - -/** - * gst_byte_reader_get_int64_be: - * @reader: a #GstByteReader instance - * @val: Pointer to a #gint64 to store the result - * - * Read a signed 64 bit big endian integer into @val - * and update the current position. - * - * Returns: %TRUE if successful, %FALSE otherwise. - * - * Since: 0.10.22 - */ - -/** - * gst_byte_reader_peek_uint64_be: - * @reader: a #GstByteReader instance - * @val: Pointer to a #guint64 to store the result - * - * Read a signed 64 bit big endian integer into @val - * but keep the current position. - * - * Returns: %TRUE if successful, %FALSE otherwise. - * - * Since: 0.10.22 - */ - -/** - * gst_byte_reader_peek_int64_be: - * @reader: a #GstByteReader instance - * @val: Pointer to a #gint64 to store the result - * - * Read a signed 64 bit big endian integer into @val - * but keep the current position. - * - * Returns: %TRUE if successful, %FALSE otherwise. - * - * Since: 0.10.22 - */ - -#define GST_BYTE_READER_READ_INTS(bits) \ -gboolean \ -gst_byte_reader_get_uint##bits##_le (GstByteReader *reader, guint##bits *val) \ -{ \ - g_return_val_if_fail (reader != NULL, FALSE); \ - g_return_val_if_fail (val != NULL, FALSE); \ - \ - if (reader->byte + bits / 8 > reader->size) \ - return FALSE; \ - \ - *val = GST_READ_UINT##bits##_LE (&reader->data[reader->byte]); \ - reader->byte += bits / 8; \ - return TRUE; \ -} \ -\ -gboolean \ -gst_byte_reader_get_uint##bits##_be (GstByteReader *reader, guint##bits *val) \ -{ \ - g_return_val_if_fail (reader != NULL, FALSE); \ - g_return_val_if_fail (val != NULL, FALSE); \ - \ - if (reader->byte + bits / 8 > reader->size) \ - return FALSE; \ - \ - *val = GST_READ_UINT##bits##_BE (&reader->data[reader->byte]); \ - reader->byte += bits / 8; \ - return TRUE; \ -} \ -\ -gboolean \ -gst_byte_reader_get_int##bits##_le (GstByteReader *reader, gint##bits *val) \ -{ \ - g_return_val_if_fail (reader != NULL, FALSE); \ - g_return_val_if_fail (val != NULL, FALSE); \ - \ - if (reader->byte + bits / 8 > reader->size) \ - return FALSE; \ - \ - *val = GST_READ_UINT##bits##_LE (&reader->data[reader->byte]); \ - reader->byte += bits / 8; \ - return TRUE; \ -} \ -\ -gboolean \ -gst_byte_reader_get_int##bits##_be (GstByteReader *reader, gint##bits *val) \ -{ \ - g_return_val_if_fail (reader != NULL, FALSE); \ - g_return_val_if_fail (val != NULL, FALSE); \ - \ - if (reader->byte + bits / 8 > reader->size) \ - return FALSE; \ - \ - *val = GST_READ_UINT##bits##_BE (&reader->data[reader->byte]); \ - reader->byte += bits / 8; \ - return TRUE; \ -} \ -gboolean \ -gst_byte_reader_peek_uint##bits##_le (GstByteReader *reader, guint##bits *val) \ -{ \ - g_return_val_if_fail (reader != NULL, FALSE); \ - g_return_val_if_fail (val != NULL, FALSE); \ - \ - if (reader->byte + bits / 8 > reader->size) \ - return FALSE; \ - \ - *val = GST_READ_UINT##bits##_LE (&reader->data[reader->byte]); \ - return TRUE; \ -} \ -\ -gboolean \ -gst_byte_reader_peek_uint##bits##_be (GstByteReader *reader, guint##bits *val) \ -{ \ - g_return_val_if_fail (reader != NULL, FALSE); \ - g_return_val_if_fail (val != NULL, FALSE); \ - \ - if (reader->byte + bits / 8 > reader->size) \ - return FALSE; \ - \ - *val = GST_READ_UINT##bits##_BE (&reader->data[reader->byte]); \ - return TRUE; \ -} \ -\ -gboolean \ -gst_byte_reader_peek_int##bits##_le (GstByteReader *reader, gint##bits *val) \ -{ \ - g_return_val_if_fail (reader != NULL, FALSE); \ - g_return_val_if_fail (val != NULL, FALSE); \ - \ - if (reader->byte + bits / 8 > reader->size) \ - return FALSE; \ - \ - *val = GST_READ_UINT##bits##_LE (&reader->data[reader->byte]); \ - return TRUE; \ -} \ -\ -gboolean \ -gst_byte_reader_peek_int##bits##_be (GstByteReader *reader, gint##bits *val) \ -{ \ - g_return_val_if_fail (reader != NULL, FALSE); \ - g_return_val_if_fail (val != NULL, FALSE); \ - \ - if (reader->byte + bits / 8 > reader->size) \ - return FALSE; \ - \ - *val = GST_READ_UINT##bits##_BE (&reader->data[reader->byte]); \ - return TRUE; \ -} - - -GST_BYTE_READER_READ_INTS (16); -GST_BYTE_READER_READ_INTS (32); -GST_BYTE_READER_READ_INTS (64); - -gboolean -gst_byte_reader_get_uint8 (GstByteReader * reader, guint8 * val) -{ - g_return_val_if_fail (reader != NULL, FALSE); - g_return_val_if_fail (val != NULL, FALSE); - - if (reader->byte + 1 > reader->size) - return FALSE; - - *val = GST_READ_UINT8 (&reader->data[reader->byte]); - reader->byte++; - return TRUE; -} - -gboolean -gst_byte_reader_get_int8 (GstByteReader * reader, gint8 * val) -{ - g_return_val_if_fail (reader != NULL, FALSE); - g_return_val_if_fail (val != NULL, FALSE); - - if (reader->byte + 1 > reader->size) - return FALSE; - - *val = GST_READ_UINT8 (&reader->data[reader->byte]); - reader->byte++; - return TRUE; -} - -gboolean -gst_byte_reader_peek_uint8 (GstByteReader * reader, guint8 * val) -{ - g_return_val_if_fail (reader != NULL, FALSE); - g_return_val_if_fail (val != NULL, FALSE); - - if (reader->byte + 1 > reader->size) - return FALSE; - - *val = GST_READ_UINT8 (&reader->data[reader->byte]); - return TRUE; -} - -gboolean -gst_byte_reader_peek_int8 (GstByteReader * reader, gint8 * val) -{ - g_return_val_if_fail (reader != NULL, FALSE); - g_return_val_if_fail (val != NULL, FALSE); - - if (reader->byte + 1 > reader->size) - return FALSE; - - *val = GST_READ_UINT8 (&reader->data[reader->byte]); - return TRUE; -} - -gboolean -gst_byte_reader_get_uint24_le (GstByteReader * reader, guint32 * val) -{ - g_return_val_if_fail (reader != NULL, FALSE); - g_return_val_if_fail (val != NULL, FALSE); - - if (reader->byte + 3 > reader->size) - return FALSE; - - *val = - (reader->data[reader->byte] | (reader->data[reader->byte + - 1] << 8) | (reader->data[reader->byte + 2] << 16)); - reader->byte += 3; - return TRUE; -} - -gboolean -gst_byte_reader_get_uint24_be (GstByteReader * reader, guint32 * val) -{ - g_return_val_if_fail (reader != NULL, FALSE); - g_return_val_if_fail (val != NULL, FALSE); - - if (reader->byte + 3 > reader->size) - return FALSE; - - *val = - (reader->data[reader->byte + 2] | (reader->data[reader->byte + - 1] << 8) | (reader->data[reader->byte] << 16)); - reader->byte += 3; - return TRUE; -} - -gboolean -gst_byte_reader_get_int24_le (GstByteReader * reader, gint32 * val) -{ - guint32 ret; - - g_return_val_if_fail (reader != NULL, FALSE); - g_return_val_if_fail (val != NULL, FALSE); - - if (reader->byte + 3 > reader->size) - return FALSE; - - ret = - (reader->data[reader->byte] | (reader->data[reader->byte + - 1] << 8) | (reader->data[reader->byte + 2] << 16)); - - if (ret & 0x00800000) - ret |= 0xff000000; - - reader->byte += 3; - - *val = ret; - return TRUE; -} - -gboolean -gst_byte_reader_get_int24_be (GstByteReader * reader, gint32 * val) -{ - guint32 ret; - - g_return_val_if_fail (reader != NULL, FALSE); - g_return_val_if_fail (val != NULL, FALSE); - - if (reader->byte + 3 > reader->size) - return FALSE; - - ret = - (reader->data[reader->byte + 2] | (reader->data[reader->byte + - 1] << 8) | (reader->data[reader->byte] << 16)); - if (ret & 0x00800000) - ret |= 0xff000000; - - reader->byte += 3; - - *val = ret; - return TRUE; -} - -gboolean -gst_byte_reader_peek_uint24_le (GstByteReader * reader, guint32 * val) -{ - g_return_val_if_fail (reader != NULL, FALSE); - g_return_val_if_fail (val != NULL, FALSE); - - if (reader->byte + 3 > reader->size) - return FALSE; - - *val = - (reader->data[reader->byte] | (reader->data[reader->byte + - 1] << 8) | (reader->data[reader->byte + 2] << 16)); - return TRUE; -} - -gboolean -gst_byte_reader_peek_uint24_be (GstByteReader * reader, guint32 * val) -{ - g_return_val_if_fail (reader != NULL, FALSE); - g_return_val_if_fail (val != NULL, FALSE); - - if (reader->byte + 3 > reader->size) - return FALSE; - - *val = - (reader->data[reader->byte + 2] | (reader->data[reader->byte + - 1] << 8) | (reader->data[reader->byte] << 16)); - return TRUE; -} - -gboolean -gst_byte_reader_peek_int24_le (GstByteReader * reader, gint32 * val) -{ - guint32 ret; - - g_return_val_if_fail (reader != NULL, FALSE); - g_return_val_if_fail (val != NULL, FALSE); - - if (reader->byte + 3 > reader->size) - return FALSE; - - ret = - (reader->data[reader->byte] | (reader->data[reader->byte + - 1] << 8) | (reader->data[reader->byte + 2] << 16)); - - if (ret & 0x00800000) - ret |= 0xff000000; - - *val = ret; - return TRUE; -} - -gboolean -gst_byte_reader_peek_int24_be (GstByteReader * reader, gint32 * val) -{ - guint32 ret; - - g_return_val_if_fail (reader != NULL, FALSE); - g_return_val_if_fail (val != NULL, FALSE); - - if (reader->byte + 3 > reader->size) - return FALSE; - - ret = - (reader->data[reader->byte + 2] | (reader->data[reader->byte + - 1] << 8) | (reader->data[reader->byte] << 16)); - if (ret & 0x00800000) - ret |= 0xff000000; - - *val = ret; - return TRUE; -} - -/** - * gst_byte_reader_get_float32_le: - * @reader: a #GstByteReader instance - * @val: Pointer to a #gfloat to store the result - * - * Read a 32 bit little endian integer into @val - * and update the current position. - * - * Returns: %TRUE if successful, %FALSE otherwise. - * - * Since: 0.10.22 - */ - -/** - * gst_byte_reader_peek_float32_le: - * @reader: a #GstByteReader instance - * @val: Pointer to a #gfloat to store the result - * - * Read a 32 bit little endian integer into @val - * but keep the current position. - * - * Returns: %TRUE if successful, %FALSE otherwise. - * - * Since: 0.10.22 - */ - -/** - * gst_byte_reader_get_float32_be: - * @reader: a #GstByteReader instance - * @val: Pointer to a #gfloat to store the result - * - * Read a 32 bit big endian integer into @val - * and update the current position. - * - * Returns: %TRUE if successful, %FALSE otherwise. - * - * Since: 0.10.22 - */ - -/** - * gst_byte_reader_peek_float32_be: - * @reader: a #GstByteReader instance - * @val: Pointer to a #gfloat to store the result - * - * Read a 32 bit big endian integer into @val - * but keep the current position. - * - * Returns: %TRUE if successful, %FALSE otherwise. - * - * Since: 0.10.22 - */ - -/** - * gst_byte_reader_get_float64_le: - * @reader: a #GstByteReader instance - * @val: Pointer to a #gdouble to store the result - * - * Read a 64 bit little endian integer into @val - * and update the current position. - * - * Returns: %TRUE if successful, %FALSE otherwise. - * - * Since: 0.10.22 - */ - -/** - * gst_byte_reader_peek_float64_le: - * @reader: a #GstByteReader instance - * @val: Pointer to a #gdouble to store the result - * - * Read a 64 bit little endian integer into @val - * but keep the current position. - * - * Returns: %TRUE if successful, %FALSE otherwise. - * - * Since: 0.10.22 - */ - -/** - * gst_byte_reader_get_float64_be: - * @reader: a #GstByteReader instance - * @val: Pointer to a #gdouble to store the result - * - * Read a 64 bit big endian integer into @val - * and update the current position. - * - * Returns: %TRUE if successful, %FALSE otherwise. - * - * Since: 0.10.22 - */ - -/** - * gst_byte_reader_peek_float64_be: - * @reader: a #GstByteReader instance - * @val: Pointer to a #gdouble to store the result - * - * Read a 64 bit big endian integer into @val - * but keep the current position. - * - * Returns: %TRUE if successful, %FALSE otherwise. - * - * Since: 0.10.22 - */ - -#define GST_BYTE_READER_READ_FLOATS(bits, type, TYPE) \ -gboolean \ -gst_byte_reader_get_float##bits##_le (GstByteReader *reader, g##type *val) \ -{ \ - g##type ret; \ - \ - g_return_val_if_fail (reader != NULL, FALSE); \ - g_return_val_if_fail (val != NULL, FALSE); \ - \ - if (reader->byte + bits / 8 > reader->size) \ - return FALSE; \ - \ - memcpy (&ret, &reader->data[reader->byte], bits / 8); \ - *val = G##TYPE##_FROM_LE (ret); \ - reader->byte += bits / 8; \ - return TRUE; \ -} \ -gboolean \ -gst_byte_reader_get_float##bits##_be (GstByteReader *reader, g##type *val) \ -{ \ - g##type ret; \ - \ - g_return_val_if_fail (reader != NULL, FALSE); \ - g_return_val_if_fail (val != NULL, FALSE); \ - \ - if (reader->byte + bits / 8 > reader->size) \ - return FALSE; \ - \ - memcpy (&ret, &reader->data[reader->byte], bits / 8); \ - *val = G##TYPE##_FROM_BE (ret); \ - reader->byte += bits / 8; \ - return TRUE; \ -} \ -gboolean \ -gst_byte_reader_peek_float##bits##_le (GstByteReader *reader, g##type *val) \ -{ \ - g##type ret; \ - \ - g_return_val_if_fail (reader != NULL, FALSE); \ - g_return_val_if_fail (val != NULL, FALSE); \ - \ - if (reader->byte + bits / 8 > reader->size) \ - return FALSE; \ - \ - memcpy (&ret, &reader->data[reader->byte], bits / 8); \ - *val = G##TYPE##_FROM_LE (ret); \ - return TRUE; \ -} \ -gboolean \ -gst_byte_reader_peek_float##bits##_be (GstByteReader *reader, g##type *val) \ -{ \ - g##type ret; \ - \ - g_return_val_if_fail (reader != NULL, FALSE); \ - g_return_val_if_fail (val != NULL, FALSE); \ - \ - if (reader->byte + bits / 8 > reader->size) \ - return FALSE; \ - \ - memcpy (&ret, &reader->data[reader->byte], bits / 8); \ - *val = G##TYPE##_FROM_BE (ret); \ - return TRUE; \ -} - -GST_BYTE_READER_READ_FLOATS (32, float, FLOAT); -GST_BYTE_READER_READ_FLOATS (64, double, DOUBLE); |