iter2 step1: vendor GStreamer 1.28.2 H.265 parser unchanged

Source: gitlab.freedesktop.org/gstreamer/gstreamer @ commit 43421c2a5b8a
(refs/tags/1.28.2). All 8 vendored files copied verbatim into
src/h265_parser/:

  gst-plugins-bad/gst-libs/gst/codecparsers/gsth265parser.c (168 KB)
  gst-plugins-bad/gst-libs/gst/codecparsers/gsth265parser.h ( 92 KB)
  gst-plugins-bad/gst-libs/gst/codecparsers/nalutils.c       (13 KB)
  gst-plugins-bad/gst-libs/gst/codecparsers/nalutils.h       (  8 KB)
  gstreamer/libs/gst/base/gstbitreader.c                     (  8 KB)
  gstreamer/libs/gst/base/gstbitreader.h                     ( 10 KB)
  gstreamer/libs/gst/base/gstbytereader.c                    ( 39 KB)
  gstreamer/libs/gst/base/gstbytereader.h                    ( 25 KB)

Total ~11 KLOC, LGPL v2.1+ per original headers (Intel + Sreerenj
Balachandran + others). LGPL headers preserved verbatim. Backend's
existing COPYING.LGPL covers redistribution.

** Build is INTENTIONALLY BROKEN at this commit. ** GLib dependencies
(GArray, g_malloc, gboolean, GST_DEBUG, etc.) are not yet satisfied;
src/Makefile.am is not yet updated to include these files. Step 2
performs the GLib-to-libc mechanical adaptation; Step 3 wires the
header + Makefile.

This vendor-unchanged commit is the upstream-tracking baseline. When
GStreamer ships a parser bug fix, the future-sync workflow is:
  git diff src/h265_parser/ HEAD..(this commit)
to surface our adaptations, then rebase those over the upstream fix.

Per ampere-kernel-decoders campaign iter2 Phase 4 §Step 1
(/home/mfritsche/src/ampere-kernel-decoders/phase4_plan_iter2.md).

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
This commit is contained in:
2026-05-16 11:02:12 +02:00
parent a8a91d92d6
commit c9b7fcff50
8 changed files with 11056 additions and 0 deletions
+307
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/* 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., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#define GST_BIT_READER_DISABLE_INLINES
#include "gstbitreader.h"
#include <string.h>
/**
* SECTION:gstbitreader
* @title: GstBitReader
* @short_description: Reads any number of bits from a memory buffer
* @symbols:
* - gst_bit_reader_skip_unchecked
* - gst_bit_reader_skip_to_byte_unchecked
* - gst_bit_reader_get_bits_uint8_unchecked
* - gst_bit_reader_peek_bits_uint8_unchecked
* - gst_bit_reader_get_bits_uint16_unchecked
* - gst_bit_reader_peek_bits_uint16_unchecked
* - gst_bit_reader_get_bits_uint32_unchecked
* - gst_bit_reader_peek_bits_uint32_unchecked
* - gst_bit_reader_get_bits_uint64_unchecked
* - gst_bit_reader_peek_bits_uint64_unchecked
*
* #GstBitReader provides a bit reader that can read any number of bits
* from a memory buffer. It provides functions for reading any number of bits
* into 8, 16, 32 and 64 bit variables.
*/
/**
* gst_bit_reader_new: (skip)
* @data: (array length=size): Data from which the #GstBitReader
* should read
* @size: Size of @data in bytes
*
* Create a new #GstBitReader instance, which will read from @data.
*
* Free-function: gst_bit_reader_free
*
* Returns: (transfer full): a new #GstBitReader instance
*/
GstBitReader *
gst_bit_reader_new (const guint8 * data, guint size)
{
GstBitReader *ret = g_new0 (GstBitReader, 1);
ret->data = data;
ret->size = size;
return ret;
}
/**
* gst_bit_reader_free:
* @reader: (in) (transfer full): a #GstBitReader instance
*
* Frees a #GstBitReader instance, which was previously allocated by
* gst_bit_reader_new().
*/
void
gst_bit_reader_free (GstBitReader * reader)
{
g_return_if_fail (reader != NULL);
g_free (reader);
}
/**
* gst_bit_reader_init:
* @reader: a #GstBitReader instance
* @data: (in) (array length=size): data from which the bit reader should read
* @size: Size of @data in bytes
*
* Initializes a #GstBitReader instance to read from @data. This function
* can be called on already initialized instances.
*/
void
gst_bit_reader_init (GstBitReader * reader, const guint8 * data, guint size)
{
g_return_if_fail (reader != NULL);
reader->data = data;
reader->size = size;
reader->byte = reader->bit = 0;
}
/**
* gst_bit_reader_set_pos:
* @reader: a #GstBitReader instance
* @pos: The new position in bits
*
* Sets the new position of a #GstBitReader instance to @pos in bits.
*
* Returns: %TRUE if the position could be set successfully, %FALSE
* otherwise.
*/
gboolean
gst_bit_reader_set_pos (GstBitReader * reader, guint pos)
{
g_return_val_if_fail (reader != NULL, FALSE);
if (pos > reader->size * 8)
return FALSE;
reader->byte = pos / 8;
reader->bit = pos % 8;
return TRUE;
}
/**
* gst_bit_reader_get_pos:
* @reader: a #GstBitReader instance
*
* Returns the current position of a #GstBitReader instance in bits.
*
* Returns: The current position of @reader in bits.
*/
guint
gst_bit_reader_get_pos (const GstBitReader * reader)
{
return _gst_bit_reader_get_pos_inline (reader);
}
/**
* gst_bit_reader_get_remaining:
* @reader: a #GstBitReader instance
*
* Returns the remaining number of bits of a #GstBitReader instance.
*
* Returns: The remaining number of bits of @reader instance.
*/
guint
gst_bit_reader_get_remaining (const GstBitReader * reader)
{
return _gst_bit_reader_get_remaining_inline (reader);
}
/**
* gst_bit_reader_get_size:
* @reader: a #GstBitReader instance
*
* Returns the total number of bits of a #GstBitReader instance.
*
* Returns: The total number of bits of @reader instance.
*/
guint
gst_bit_reader_get_size (const GstBitReader * reader)
{
return _gst_bit_reader_get_size_inline (reader);
}
/**
* gst_bit_reader_skip:
* @reader: a #GstBitReader instance
* @nbits: the number of bits to skip
*
* Skips @nbits bits of the #GstBitReader instance.
*
* Returns: %TRUE if @nbits bits could be skipped, %FALSE otherwise.
*/
gboolean
gst_bit_reader_skip (GstBitReader * reader, guint nbits)
{
return _gst_bit_reader_skip_inline (reader, nbits);
}
/**
* gst_bit_reader_skip_to_byte:
* @reader: a #GstBitReader instance
*
* Skips until the next byte.
*
* Returns: %TRUE if successful, %FALSE otherwise.
*/
gboolean
gst_bit_reader_skip_to_byte (GstBitReader * reader)
{
return _gst_bit_reader_skip_to_byte_inline (reader);
}
/**
* gst_bit_reader_get_bits_uint8:
* @reader: a #GstBitReader instance
* @val: (out): Pointer to a #guint8 to store the result
* @nbits: number of bits to read
*
* Read @nbits bits into @val and update the current position.
*
* Returns: %TRUE if successful, %FALSE otherwise.
*/
/**
* gst_bit_reader_get_bits_uint16:
* @reader: a #GstBitReader instance
* @val: (out): Pointer to a #guint16 to store the result
* @nbits: number of bits to read
*
* Read @nbits bits into @val and update the current position.
*
* Returns: %TRUE if successful, %FALSE otherwise.
*/
/**
* gst_bit_reader_get_bits_uint32:
* @reader: a #GstBitReader instance
* @val: (out): Pointer to a #guint32 to store the result
* @nbits: number of bits to read
*
* Read @nbits bits into @val and update the current position.
*
* Returns: %TRUE if successful, %FALSE otherwise.
*/
/**
* gst_bit_reader_get_bits_uint64:
* @reader: a #GstBitReader instance
* @val: (out): Pointer to a #guint64 to store the result
* @nbits: number of bits to read
*
* Read @nbits bits into @val and update the current position.
*
* Returns: %TRUE if successful, %FALSE otherwise.
*/
/**
* gst_bit_reader_peek_bits_uint8:
* @reader: a #GstBitReader instance
* @val: (out): Pointer to a #guint8 to store the result
* @nbits: number of bits to read
*
* Read @nbits bits into @val but keep the current position.
*
* Returns: %TRUE if successful, %FALSE otherwise.
*/
/**
* gst_bit_reader_peek_bits_uint16:
* @reader: a #GstBitReader instance
* @val: (out): Pointer to a #guint16 to store the result
* @nbits: number of bits to read
*
* Read @nbits bits into @val but keep the current position.
*
* Returns: %TRUE if successful, %FALSE otherwise.
*/
/**
* gst_bit_reader_peek_bits_uint32:
* @reader: a #GstBitReader instance
* @val: (out): Pointer to a #guint32 to store the result
* @nbits: number of bits to read
*
* Read @nbits bits into @val but keep the current position.
*
* Returns: %TRUE if successful, %FALSE otherwise.
*/
/**
* gst_bit_reader_peek_bits_uint64:
* @reader: a #GstBitReader instance
* @val: (out): Pointer to a #guint64 to store the result
* @nbits: number of bits to read
*
* Read @nbits bits into @val but keep the current position.
*
* Returns: %TRUE if successful, %FALSE otherwise.
*/
#define GST_BIT_READER_READ_BITS(bits) \
gboolean \
gst_bit_reader_peek_bits_uint##bits (const GstBitReader *reader, guint##bits *val, guint nbits) \
{ \
return _gst_bit_reader_peek_bits_uint##bits##_inline (reader, val, nbits); \
} \
\
gboolean \
gst_bit_reader_get_bits_uint##bits (GstBitReader *reader, guint##bits *val, guint nbits) \
{ \
return _gst_bit_reader_get_bits_uint##bits##_inline (reader, val, nbits); \
}
GST_BIT_READER_READ_BITS (8);
GST_BIT_READER_READ_BITS (16);
GST_BIT_READER_READ_BITS (32);
GST_BIT_READER_READ_BITS (64);
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/* 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., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#ifndef __GST_BIT_READER_H__
#define __GST_BIT_READER_H__
#include <gst/gst.h>
#include <gst/base/base-prelude.h>
/* FIXME: inline functions */
G_BEGIN_DECLS
#define GST_BIT_READER(reader) ((GstBitReader *) (reader))
/**
* GstBitReader:
* @data: (array length=size): Data from which the bit reader will
* read
* @size: Size of @data in bytes
* @byte: Current byte position
* @bit: Bit position in the current byte
*
* A bit reader instance.
*/
typedef struct {
const guint8 *data;
guint size;
guint byte; /* Byte position */
guint bit; /* Bit position in the current byte */
/* < private > */
gpointer _gst_reserved[GST_PADDING];
} GstBitReader;
GST_BASE_API
GstBitReader * gst_bit_reader_new (const guint8 *data, guint size) G_GNUC_MALLOC;
GST_BASE_API
void gst_bit_reader_free (GstBitReader *reader);
GST_BASE_API
void gst_bit_reader_init (GstBitReader *reader, const guint8 *data, guint size);
GST_BASE_API
gboolean gst_bit_reader_set_pos (GstBitReader *reader, guint pos);
GST_BASE_API
guint gst_bit_reader_get_pos (const GstBitReader *reader);
GST_BASE_API
guint gst_bit_reader_get_remaining (const GstBitReader *reader);
GST_BASE_API
guint gst_bit_reader_get_size (const GstBitReader *reader);
GST_BASE_API
gboolean gst_bit_reader_skip (GstBitReader *reader, guint nbits);
GST_BASE_API
gboolean gst_bit_reader_skip_to_byte (GstBitReader *reader);
GST_BASE_API
gboolean gst_bit_reader_get_bits_uint8 (GstBitReader *reader, guint8 *val, guint nbits);
GST_BASE_API
gboolean gst_bit_reader_get_bits_uint16 (GstBitReader *reader, guint16 *val, guint nbits);
GST_BASE_API
gboolean gst_bit_reader_get_bits_uint32 (GstBitReader *reader, guint32 *val, guint nbits);
GST_BASE_API
gboolean gst_bit_reader_get_bits_uint64 (GstBitReader *reader, guint64 *val, guint nbits);
GST_BASE_API
gboolean gst_bit_reader_peek_bits_uint8 (const GstBitReader *reader, guint8 *val, guint nbits);
GST_BASE_API
gboolean gst_bit_reader_peek_bits_uint16 (const GstBitReader *reader, guint16 *val, guint nbits);
GST_BASE_API
gboolean gst_bit_reader_peek_bits_uint32 (const GstBitReader *reader, guint32 *val, guint nbits);
GST_BASE_API
gboolean gst_bit_reader_peek_bits_uint64 (const GstBitReader *reader, guint64 *val, guint nbits);
/**
* GST_BIT_READER_INIT:
* @data: Data from which the #GstBitReader should read
* @size: Size of @data in bytes
*
* A #GstBitReader must be initialized with this macro, before it can be
* used. This macro can used be to initialize a variable, but it cannot
* be assigned to a variable. In that case you have to use
* gst_bit_reader_init().
*/
#define GST_BIT_READER_INIT(data, size) {data, size, 0, 0}
/* Unchecked variants */
static inline void
gst_bit_reader_skip_unchecked (GstBitReader * reader, guint nbits)
{
reader->bit += nbits;
reader->byte += reader->bit / 8;
reader->bit = reader->bit % 8;
}
static inline void
gst_bit_reader_skip_to_byte_unchecked (GstBitReader * reader)
{
if (reader->bit) {
reader->bit = 0;
reader->byte++;
}
}
#define __GST_BIT_READER_READ_BITS_UNCHECKED(bits) \
static inline guint##bits \
gst_bit_reader_peek_bits_uint##bits##_unchecked (const GstBitReader *reader, guint nbits) \
{ \
guint##bits ret = 0; \
const guint8 *data; \
guint byte, bit; \
\
data = reader->data; \
byte = reader->byte; \
bit = reader->bit; \
\
while (nbits > 0) { \
guint toread = MIN (nbits, 8 - bit); \
\
ret <<= toread; \
ret |= (data[byte] & (0xff >> bit)) >> (8 - toread - bit); \
\
bit += toread; \
if (bit >= 8) { \
byte++; \
bit = 0; \
} \
nbits -= toread; \
} \
\
return ret; \
} \
\
static inline guint##bits \
gst_bit_reader_get_bits_uint##bits##_unchecked (GstBitReader *reader, guint nbits) \
{ \
guint##bits ret; \
\
ret = gst_bit_reader_peek_bits_uint##bits##_unchecked (reader, nbits); \
\
gst_bit_reader_skip_unchecked (reader, nbits); \
\
return ret; \
}
__GST_BIT_READER_READ_BITS_UNCHECKED (8)
__GST_BIT_READER_READ_BITS_UNCHECKED (16)
__GST_BIT_READER_READ_BITS_UNCHECKED (32)
__GST_BIT_READER_READ_BITS_UNCHECKED (64)
#undef __GST_BIT_READER_READ_BITS_UNCHECKED
/* unchecked variants -- do not use */
static inline guint
_gst_bit_reader_get_size_unchecked (const GstBitReader * reader)
{
return reader->size * 8;
}
static inline guint
_gst_bit_reader_get_pos_unchecked (const GstBitReader * reader)
{
return reader->byte * 8 + reader->bit;
}
static inline guint
_gst_bit_reader_get_remaining_unchecked (const GstBitReader * reader)
{
return reader->size * 8 - (reader->byte * 8 + reader->bit);
}
/* inlined variants -- do not use directly */
static inline guint
_gst_bit_reader_get_size_inline (const GstBitReader * reader)
{
g_return_val_if_fail (reader != NULL, 0);
return _gst_bit_reader_get_size_unchecked (reader);
}
static inline guint
_gst_bit_reader_get_pos_inline (const GstBitReader * reader)
{
g_return_val_if_fail (reader != NULL, 0);
return _gst_bit_reader_get_pos_unchecked (reader);
}
static inline guint
_gst_bit_reader_get_remaining_inline (const GstBitReader * reader)
{
g_return_val_if_fail (reader != NULL, 0);
return _gst_bit_reader_get_remaining_unchecked (reader);
}
static inline gboolean
_gst_bit_reader_skip_inline (GstBitReader * reader, guint nbits)
{
g_return_val_if_fail (reader != NULL, FALSE);
if (_gst_bit_reader_get_remaining_unchecked (reader) < nbits)
return FALSE;
gst_bit_reader_skip_unchecked (reader, nbits);
return TRUE;
}
static inline gboolean
_gst_bit_reader_skip_to_byte_inline (GstBitReader * reader)
{
g_return_val_if_fail (reader != NULL, FALSE);
if (reader->byte > reader->size)
return FALSE;
gst_bit_reader_skip_to_byte_unchecked (reader);
return TRUE;
}
#define __GST_BIT_READER_READ_BITS_INLINE(bits) \
static inline gboolean \
_gst_bit_reader_get_bits_uint##bits##_inline (GstBitReader *reader, guint##bits *val, guint nbits) \
{ \
g_return_val_if_fail (reader != NULL, FALSE); \
g_return_val_if_fail (val != NULL, FALSE); \
g_return_val_if_fail (nbits <= bits, FALSE); \
\
if (_gst_bit_reader_get_remaining_unchecked (reader) < nbits) \
return FALSE; \
\
*val = gst_bit_reader_get_bits_uint##bits##_unchecked (reader, nbits); \
return TRUE; \
} \
\
static inline gboolean \
_gst_bit_reader_peek_bits_uint##bits##_inline (const GstBitReader *reader, guint##bits *val, guint nbits) \
{ \
g_return_val_if_fail (reader != NULL, FALSE); \
g_return_val_if_fail (val != NULL, FALSE); \
g_return_val_if_fail (nbits <= bits, FALSE); \
\
if (_gst_bit_reader_get_remaining_unchecked (reader) < nbits) \
return FALSE; \
\
*val = gst_bit_reader_peek_bits_uint##bits##_unchecked (reader, nbits); \
return TRUE; \
}
__GST_BIT_READER_READ_BITS_INLINE (8)
__GST_BIT_READER_READ_BITS_INLINE (16)
__GST_BIT_READER_READ_BITS_INLINE (32)
__GST_BIT_READER_READ_BITS_INLINE (64)
#undef __GST_BIT_READER_READ_BITS_INLINE
#ifndef GST_BIT_READER_DISABLE_INLINES
#define gst_bit_reader_get_size(reader) \
_gst_bit_reader_get_size_inline (reader)
#define gst_bit_reader_get_pos(reader) \
_gst_bit_reader_get_pos_inline (reader)
#define gst_bit_reader_get_remaining(reader) \
_gst_bit_reader_get_remaining_inline (reader)
/* we use defines here so we can add the G_LIKELY() */
#define gst_bit_reader_skip(reader, nbits)\
G_LIKELY (_gst_bit_reader_skip_inline(reader, nbits))
#define gst_bit_reader_skip_to_byte(reader)\
G_LIKELY (_gst_bit_reader_skip_to_byte_inline(reader))
#define gst_bit_reader_get_bits_uint8(reader, val, nbits) \
G_LIKELY (_gst_bit_reader_get_bits_uint8_inline (reader, val, nbits))
#define gst_bit_reader_get_bits_uint16(reader, val, nbits) \
G_LIKELY (_gst_bit_reader_get_bits_uint16_inline (reader, val, nbits))
#define gst_bit_reader_get_bits_uint32(reader, val, nbits) \
G_LIKELY (_gst_bit_reader_get_bits_uint32_inline (reader, val, nbits))
#define gst_bit_reader_get_bits_uint64(reader, val, nbits) \
G_LIKELY (_gst_bit_reader_get_bits_uint64_inline (reader, val, nbits))
#define gst_bit_reader_peek_bits_uint8(reader, val, nbits) \
G_LIKELY (_gst_bit_reader_peek_bits_uint8_inline (reader, val, nbits))
#define gst_bit_reader_peek_bits_uint16(reader, val, nbits) \
G_LIKELY (_gst_bit_reader_peek_bits_uint16_inline (reader, val, nbits))
#define gst_bit_reader_peek_bits_uint32(reader, val, nbits) \
G_LIKELY (_gst_bit_reader_peek_bits_uint32_inline (reader, val, nbits))
#define gst_bit_reader_peek_bits_uint64(reader, val, nbits) \
G_LIKELY (_gst_bit_reader_peek_bits_uint64_inline (reader, val, nbits))
#endif
G_END_DECLS
#endif /* __GST_BIT_READER_H__ */
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/* GStreamer byte reader
*
* Copyright (C) 2008 Sebastian Dröge <sebastian.droege@collabora.co.uk>.
* Copyright (C) 2009 Tim-Philipp Müller <tim centricular net>
*
* 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., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#ifndef __GST_BYTE_READER_H__
#define __GST_BYTE_READER_H__
#include <gst/gst.h>
#include <gst/base/base-prelude.h>
G_BEGIN_DECLS
#define GST_BYTE_READER(reader) ((GstByteReader *) (reader))
/**
* GstByteReader:
* @data: (array length=size): Data from which the bit reader will
* read
* @size: Size of @data in bytes
* @byte: Current byte position
*
* A byte reader instance.
*/
typedef struct {
const guint8 *data;
guint size;
guint byte; /* Byte position */
/* < private > */
gpointer _gst_reserved[GST_PADDING];
} GstByteReader;
GST_BASE_API
GstByteReader * gst_byte_reader_new (const guint8 *data, guint size) G_GNUC_MALLOC;
GST_BASE_API
void gst_byte_reader_free (GstByteReader *reader);
GST_BASE_API
void gst_byte_reader_init (GstByteReader *reader, const guint8 *data, guint size);
GST_BASE_API
gboolean gst_byte_reader_peek_sub_reader (GstByteReader * reader,
GstByteReader * sub_reader,
guint size);
GST_BASE_API
gboolean gst_byte_reader_get_sub_reader (GstByteReader * reader,
GstByteReader * sub_reader,
guint size);
GST_BASE_API
gboolean gst_byte_reader_set_pos (GstByteReader *reader, guint pos);
GST_BASE_API
guint gst_byte_reader_get_pos (const GstByteReader *reader);
GST_BASE_API
guint gst_byte_reader_get_remaining (const GstByteReader *reader);
GST_BASE_API
guint gst_byte_reader_get_size (const GstByteReader *reader);
GST_BASE_API
gboolean gst_byte_reader_skip (GstByteReader *reader, guint nbytes);
GST_BASE_API
gboolean gst_byte_reader_get_uint8 (GstByteReader *reader, guint8 *val);
GST_BASE_API
gboolean gst_byte_reader_get_int8 (GstByteReader *reader, gint8 *val);
GST_BASE_API
gboolean gst_byte_reader_get_uint16_le (GstByteReader *reader, guint16 *val);
GST_BASE_API
gboolean gst_byte_reader_get_int16_le (GstByteReader *reader, gint16 *val);
GST_BASE_API
gboolean gst_byte_reader_get_uint16_be (GstByteReader *reader, guint16 *val);
GST_BASE_API
gboolean gst_byte_reader_get_int16_be (GstByteReader *reader, gint16 *val);
GST_BASE_API
gboolean gst_byte_reader_get_uint24_le (GstByteReader *reader, guint32 *val);
GST_BASE_API
gboolean gst_byte_reader_get_int24_le (GstByteReader *reader, gint32 *val);
GST_BASE_API
gboolean gst_byte_reader_get_uint24_be (GstByteReader *reader, guint32 *val);
GST_BASE_API
gboolean gst_byte_reader_get_int24_be (GstByteReader *reader, gint32 *val);
GST_BASE_API
gboolean gst_byte_reader_get_uint32_le (GstByteReader *reader, guint32 *val);
GST_BASE_API
gboolean gst_byte_reader_get_int32_le (GstByteReader *reader, gint32 *val);
GST_BASE_API
gboolean gst_byte_reader_get_uint32_be (GstByteReader *reader, guint32 *val);
GST_BASE_API
gboolean gst_byte_reader_get_int32_be (GstByteReader *reader, gint32 *val);
GST_BASE_API
gboolean gst_byte_reader_get_uint64_le (GstByteReader *reader, guint64 *val);
GST_BASE_API
gboolean gst_byte_reader_get_int64_le (GstByteReader *reader, gint64 *val);
GST_BASE_API
gboolean gst_byte_reader_get_uint64_be (GstByteReader *reader, guint64 *val);
GST_BASE_API
gboolean gst_byte_reader_get_int64_be (GstByteReader *reader, gint64 *val);
GST_BASE_API
gboolean gst_byte_reader_peek_uint8 (const GstByteReader *reader, guint8 *val);
GST_BASE_API
gboolean gst_byte_reader_peek_int8 (const GstByteReader *reader, gint8 *val);
GST_BASE_API
gboolean gst_byte_reader_peek_uint16_le (const GstByteReader *reader, guint16 *val);
GST_BASE_API
gboolean gst_byte_reader_peek_int16_le (const GstByteReader *reader, gint16 *val);
GST_BASE_API
gboolean gst_byte_reader_peek_uint16_be (const GstByteReader *reader, guint16 *val);
GST_BASE_API
gboolean gst_byte_reader_peek_int16_be (const GstByteReader *reader, gint16 *val);
GST_BASE_API
gboolean gst_byte_reader_peek_uint24_le (const GstByteReader *reader, guint32 *val);
GST_BASE_API
gboolean gst_byte_reader_peek_int24_le (const GstByteReader *reader, gint32 *val);
GST_BASE_API
gboolean gst_byte_reader_peek_uint24_be (const GstByteReader *reader, guint32 *val);
GST_BASE_API
gboolean gst_byte_reader_peek_int24_be (const GstByteReader *reader, gint32 *val);
GST_BASE_API
gboolean gst_byte_reader_peek_uint32_le (const GstByteReader *reader, guint32 *val);
GST_BASE_API
gboolean gst_byte_reader_peek_int32_le (const GstByteReader *reader, gint32 *val);
GST_BASE_API
gboolean gst_byte_reader_peek_uint32_be (const GstByteReader *reader, guint32 *val);
GST_BASE_API
gboolean gst_byte_reader_peek_int32_be (const GstByteReader *reader, gint32 *val);
GST_BASE_API
gboolean gst_byte_reader_peek_uint64_le (const GstByteReader *reader, guint64 *val);
GST_BASE_API
gboolean gst_byte_reader_peek_int64_le (const GstByteReader *reader, gint64 *val);
GST_BASE_API
gboolean gst_byte_reader_peek_uint64_be (const GstByteReader *reader, guint64 *val);
GST_BASE_API
gboolean gst_byte_reader_peek_int64_be (const GstByteReader *reader, gint64 *val);
GST_BASE_API
gboolean gst_byte_reader_get_float32_le (GstByteReader *reader, gfloat *val);
GST_BASE_API
gboolean gst_byte_reader_get_float32_be (GstByteReader *reader, gfloat *val);
GST_BASE_API
gboolean gst_byte_reader_get_float64_le (GstByteReader *reader, gdouble *val);
GST_BASE_API
gboolean gst_byte_reader_get_float64_be (GstByteReader *reader, gdouble *val);
GST_BASE_API
gboolean gst_byte_reader_peek_float32_le (const GstByteReader *reader, gfloat *val);
GST_BASE_API
gboolean gst_byte_reader_peek_float32_be (const GstByteReader *reader, gfloat *val);
GST_BASE_API
gboolean gst_byte_reader_peek_float64_le (const GstByteReader *reader, gdouble *val);
GST_BASE_API
gboolean gst_byte_reader_peek_float64_be (const GstByteReader *reader, gdouble *val);
GST_BASE_API
gboolean gst_byte_reader_dup_data (GstByteReader * reader, guint size, guint8 ** val);
GST_BASE_API
gboolean gst_byte_reader_get_data (GstByteReader * reader, guint size, const guint8 ** val);
GST_BASE_API
gboolean gst_byte_reader_peek_data (const GstByteReader * reader, guint size, const guint8 ** val);
#define gst_byte_reader_dup_string(reader,str) \
gst_byte_reader_dup_string_utf8(reader,str)
GST_BASE_API
gboolean gst_byte_reader_dup_string_utf8 (GstByteReader * reader, gchar ** str);
GST_BASE_API
gboolean gst_byte_reader_dup_string_utf16 (GstByteReader * reader, guint16 ** str);
GST_BASE_API
gboolean gst_byte_reader_dup_string_utf32 (GstByteReader * reader, guint32 ** str);
#define gst_byte_reader_skip_string(reader) \
gst_byte_reader_skip_string_utf8(reader)
GST_BASE_API
gboolean gst_byte_reader_skip_string_utf8 (GstByteReader * reader);
GST_BASE_API
gboolean gst_byte_reader_skip_string_utf16 (GstByteReader * reader);
GST_BASE_API
gboolean gst_byte_reader_skip_string_utf32 (GstByteReader * reader);
#define gst_byte_reader_get_string(reader,str) \
gst_byte_reader_get_string_utf8(reader,str)
#define gst_byte_reader_peek_string(reader,str) \
gst_byte_reader_peek_string_utf8(reader,str)
GST_BASE_API
gboolean gst_byte_reader_get_string_utf8 (GstByteReader * reader, const gchar ** str);
GST_BASE_API
gboolean gst_byte_reader_peek_string_utf8 (const GstByteReader * reader, const gchar ** str);
GST_BASE_API
guint gst_byte_reader_masked_scan_uint32 (const GstByteReader * reader,
guint32 mask,
guint32 pattern,
guint offset,
guint size);
GST_BASE_API
guint gst_byte_reader_masked_scan_uint32_peek (const GstByteReader * reader,
guint32 mask,
guint32 pattern,
guint offset,
guint size,
guint32 * value);
/**
* GST_BYTE_READER_INIT:
* @data: Data from which the #GstByteReader should read
* @size: Size of @data in bytes
*
* A #GstByteReader must be initialized with this macro, before it can be
* used. This macro can used be to initialize a variable, but it cannot
* be assigned to a variable. In that case you have to use
* gst_byte_reader_init().
*/
#define GST_BYTE_READER_INIT(data, size) {data, size, 0}
/* unchecked variants */
static inline void
gst_byte_reader_skip_unchecked (GstByteReader * reader, guint nbytes)
{
reader->byte += nbytes;
}
#define __GST_BYTE_READER_GET_PEEK_BITS_UNCHECKED(bits,type,lower,upper,adj) \
\
static inline type \
gst_byte_reader_peek_##lower##_unchecked (const GstByteReader * reader) \
{ \
type val = (type) GST_READ_##upper (reader->data + reader->byte); \
adj \
return val; \
} \
\
static inline type \
gst_byte_reader_get_##lower##_unchecked (GstByteReader * reader) \
{ \
type val = gst_byte_reader_peek_##lower##_unchecked (reader); \
reader->byte += bits / 8; \
return val; \
}
__GST_BYTE_READER_GET_PEEK_BITS_UNCHECKED(8,guint8,uint8,UINT8,/* */)
__GST_BYTE_READER_GET_PEEK_BITS_UNCHECKED(8,gint8,int8,UINT8,/* */)
__GST_BYTE_READER_GET_PEEK_BITS_UNCHECKED(16,guint16,uint16_le,UINT16_LE,/* */)
__GST_BYTE_READER_GET_PEEK_BITS_UNCHECKED(16,guint16,uint16_be,UINT16_BE,/* */)
__GST_BYTE_READER_GET_PEEK_BITS_UNCHECKED(16,gint16,int16_le,UINT16_LE,/* */)
__GST_BYTE_READER_GET_PEEK_BITS_UNCHECKED(16,gint16,int16_be,UINT16_BE,/* */)
__GST_BYTE_READER_GET_PEEK_BITS_UNCHECKED(32,guint32,uint32_le,UINT32_LE,/* */)
__GST_BYTE_READER_GET_PEEK_BITS_UNCHECKED(32,guint32,uint32_be,UINT32_BE,/* */)
__GST_BYTE_READER_GET_PEEK_BITS_UNCHECKED(32,gint32,int32_le,UINT32_LE,/* */)
__GST_BYTE_READER_GET_PEEK_BITS_UNCHECKED(32,gint32,int32_be,UINT32_BE,/* */)
__GST_BYTE_READER_GET_PEEK_BITS_UNCHECKED(24,guint32,uint24_le,UINT24_LE,/* */)
__GST_BYTE_READER_GET_PEEK_BITS_UNCHECKED(24,guint32,uint24_be,UINT24_BE,/* */)
/* fix up the sign for 24-bit signed ints stored in 32-bit signed ints */
__GST_BYTE_READER_GET_PEEK_BITS_UNCHECKED(24,gint32,int24_le,UINT24_LE,
if (val & 0x00800000) val |= 0xff000000;)
__GST_BYTE_READER_GET_PEEK_BITS_UNCHECKED(24,gint32,int24_be,UINT24_BE,
if (val & 0x00800000) val |= 0xff000000;)
__GST_BYTE_READER_GET_PEEK_BITS_UNCHECKED(64,guint64,uint64_le,UINT64_LE,/* */)
__GST_BYTE_READER_GET_PEEK_BITS_UNCHECKED(64,guint64,uint64_be,UINT64_BE,/* */)
__GST_BYTE_READER_GET_PEEK_BITS_UNCHECKED(64,gint64,int64_le,UINT64_LE,/* */)
__GST_BYTE_READER_GET_PEEK_BITS_UNCHECKED(64,gint64,int64_be,UINT64_BE,/* */)
__GST_BYTE_READER_GET_PEEK_BITS_UNCHECKED(32,gfloat,float32_le,FLOAT_LE,/* */)
__GST_BYTE_READER_GET_PEEK_BITS_UNCHECKED(32,gfloat,float32_be,FLOAT_BE,/* */)
__GST_BYTE_READER_GET_PEEK_BITS_UNCHECKED(64,gdouble,float64_le,DOUBLE_LE,/* */)
__GST_BYTE_READER_GET_PEEK_BITS_UNCHECKED(64,gdouble,float64_be,DOUBLE_BE,/* */)
#undef __GET_PEEK_BITS_UNCHECKED
static inline const guint8 *
gst_byte_reader_peek_data_unchecked (const GstByteReader * reader)
{
return (const guint8 *) (reader->data + reader->byte);
}
static inline const guint8 *
gst_byte_reader_get_data_unchecked (GstByteReader * reader, guint size)
{
const guint8 *data;
data = gst_byte_reader_peek_data_unchecked (reader);
gst_byte_reader_skip_unchecked (reader, size);
return data;
}
static inline guint8 *
gst_byte_reader_dup_data_unchecked (GstByteReader * reader, guint size)
{
gconstpointer data = gst_byte_reader_get_data_unchecked (reader, size);
guint8 *dup_data = (guint8 *) g_malloc (size);
memcpy (dup_data, data, size);
return dup_data;
}
/* Unchecked variants that should not be used */
static inline guint
_gst_byte_reader_get_pos_unchecked (const GstByteReader * reader)
{
return reader->byte;
}
static inline guint
_gst_byte_reader_get_remaining_unchecked (const GstByteReader * reader)
{
return reader->size - reader->byte;
}
static inline guint
_gst_byte_reader_get_size_unchecked (const GstByteReader * reader)
{
return reader->size;
}
/* inlined variants (do not use directly) */
static inline guint
_gst_byte_reader_get_remaining_inline (const GstByteReader * reader)
{
g_return_val_if_fail (reader != NULL, 0);
return _gst_byte_reader_get_remaining_unchecked (reader);
}
static inline guint
_gst_byte_reader_get_size_inline (const GstByteReader * reader)
{
g_return_val_if_fail (reader != NULL, 0);
return _gst_byte_reader_get_size_unchecked (reader);
}
#define __GST_BYTE_READER_GET_PEEK_BITS_INLINE(bits,type,name) \
\
static inline gboolean \
_gst_byte_reader_peek_##name##_inline (const GstByteReader * reader, type * val) \
{ \
g_return_val_if_fail (reader != NULL, FALSE); \
g_return_val_if_fail (val != NULL, FALSE); \
\
if (_gst_byte_reader_get_remaining_unchecked (reader) < (bits / 8)) \
return FALSE; \
\
*val = gst_byte_reader_peek_##name##_unchecked (reader); \
return TRUE; \
} \
\
static inline gboolean \
_gst_byte_reader_get_##name##_inline (GstByteReader * reader, type * val) \
{ \
g_return_val_if_fail (reader != NULL, FALSE); \
g_return_val_if_fail (val != NULL, FALSE); \
\
if (_gst_byte_reader_get_remaining_unchecked (reader) < (bits / 8)) \
return FALSE; \
\
*val = gst_byte_reader_get_##name##_unchecked (reader); \
return TRUE; \
}
__GST_BYTE_READER_GET_PEEK_BITS_INLINE(8,guint8,uint8)
__GST_BYTE_READER_GET_PEEK_BITS_INLINE(8,gint8,int8)
__GST_BYTE_READER_GET_PEEK_BITS_INLINE(16,guint16,uint16_le)
__GST_BYTE_READER_GET_PEEK_BITS_INLINE(16,guint16,uint16_be)
__GST_BYTE_READER_GET_PEEK_BITS_INLINE(16,gint16,int16_le)
__GST_BYTE_READER_GET_PEEK_BITS_INLINE(16,gint16,int16_be)
__GST_BYTE_READER_GET_PEEK_BITS_INLINE(32,guint32,uint32_le)
__GST_BYTE_READER_GET_PEEK_BITS_INLINE(32,guint32,uint32_be)
__GST_BYTE_READER_GET_PEEK_BITS_INLINE(32,gint32,int32_le)
__GST_BYTE_READER_GET_PEEK_BITS_INLINE(32,gint32,int32_be)
__GST_BYTE_READER_GET_PEEK_BITS_INLINE(24,guint32,uint24_le)
__GST_BYTE_READER_GET_PEEK_BITS_INLINE(24,guint32,uint24_be)
__GST_BYTE_READER_GET_PEEK_BITS_INLINE(24,gint32,int24_le)
__GST_BYTE_READER_GET_PEEK_BITS_INLINE(24,gint32,int24_be)
__GST_BYTE_READER_GET_PEEK_BITS_INLINE(64,guint64,uint64_le)
__GST_BYTE_READER_GET_PEEK_BITS_INLINE(64,guint64,uint64_be)
__GST_BYTE_READER_GET_PEEK_BITS_INLINE(64,gint64,int64_le)
__GST_BYTE_READER_GET_PEEK_BITS_INLINE(64,gint64,int64_be)
__GST_BYTE_READER_GET_PEEK_BITS_INLINE(32,gfloat,float32_le)
__GST_BYTE_READER_GET_PEEK_BITS_INLINE(32,gfloat,float32_be)
__GST_BYTE_READER_GET_PEEK_BITS_INLINE(64,gdouble,float64_le)
__GST_BYTE_READER_GET_PEEK_BITS_INLINE(64,gdouble,float64_be)
#undef __GST_BYTE_READER_GET_PEEK_BITS_INLINE
#ifndef GST_BYTE_READER_DISABLE_INLINES
#define gst_byte_reader_init(reader,data,size) \
_gst_byte_reader_init_inline(reader,data,size)
#define gst_byte_reader_get_remaining(reader) \
_gst_byte_reader_get_remaining_inline(reader)
#define gst_byte_reader_get_size(reader) \
_gst_byte_reader_get_size_inline(reader)
#define gst_byte_reader_get_pos(reader) \
_gst_byte_reader_get_pos_inline(reader)
/* we use defines here so we can add the G_LIKELY() */
#define gst_byte_reader_get_uint8(reader,val) \
G_LIKELY(_gst_byte_reader_get_uint8_inline(reader,val))
#define gst_byte_reader_get_int8(reader,val) \
G_LIKELY(_gst_byte_reader_get_int8_inline(reader,val))
#define gst_byte_reader_get_uint16_le(reader,val) \
G_LIKELY(_gst_byte_reader_get_uint16_le_inline(reader,val))
#define gst_byte_reader_get_int16_le(reader,val) \
G_LIKELY(_gst_byte_reader_get_int16_le_inline(reader,val))
#define gst_byte_reader_get_uint16_be(reader,val) \
G_LIKELY(_gst_byte_reader_get_uint16_be_inline(reader,val))
#define gst_byte_reader_get_int16_be(reader,val) \
G_LIKELY(_gst_byte_reader_get_int16_be_inline(reader,val))
#define gst_byte_reader_get_uint24_le(reader,val) \
G_LIKELY(_gst_byte_reader_get_uint24_le_inline(reader,val))
#define gst_byte_reader_get_int24_le(reader,val) \
G_LIKELY(_gst_byte_reader_get_int24_le_inline(reader,val))
#define gst_byte_reader_get_uint24_be(reader,val) \
G_LIKELY(_gst_byte_reader_get_uint24_be_inline(reader,val))
#define gst_byte_reader_get_int24_be(reader,val) \
G_LIKELY(_gst_byte_reader_get_int24_be_inline(reader,val))
#define gst_byte_reader_get_uint32_le(reader,val) \
G_LIKELY(_gst_byte_reader_get_uint32_le_inline(reader,val))
#define gst_byte_reader_get_int32_le(reader,val) \
G_LIKELY(_gst_byte_reader_get_int32_le_inline(reader,val))
#define gst_byte_reader_get_uint32_be(reader,val) \
G_LIKELY(_gst_byte_reader_get_uint32_be_inline(reader,val))
#define gst_byte_reader_get_int32_be(reader,val) \
G_LIKELY(_gst_byte_reader_get_int32_be_inline(reader,val))
#define gst_byte_reader_get_uint64_le(reader,val) \
G_LIKELY(_gst_byte_reader_get_uint64_le_inline(reader,val))
#define gst_byte_reader_get_int64_le(reader,val) \
G_LIKELY(_gst_byte_reader_get_int64_le_inline(reader,val))
#define gst_byte_reader_get_uint64_be(reader,val) \
G_LIKELY(_gst_byte_reader_get_uint64_be_inline(reader,val))
#define gst_byte_reader_get_int64_be(reader,val) \
G_LIKELY(_gst_byte_reader_get_int64_be_inline(reader,val))
#define gst_byte_reader_peek_uint8(reader,val) \
G_LIKELY(_gst_byte_reader_peek_uint8_inline(reader,val))
#define gst_byte_reader_peek_int8(reader,val) \
G_LIKELY(_gst_byte_reader_peek_int8_inline(reader,val))
#define gst_byte_reader_peek_uint16_le(reader,val) \
G_LIKELY(_gst_byte_reader_peek_uint16_le_inline(reader,val))
#define gst_byte_reader_peek_int16_le(reader,val) \
G_LIKELY(_gst_byte_reader_peek_int16_le_inline(reader,val))
#define gst_byte_reader_peek_uint16_be(reader,val) \
G_LIKELY(_gst_byte_reader_peek_uint16_be_inline(reader,val))
#define gst_byte_reader_peek_int16_be(reader,val) \
G_LIKELY(_gst_byte_reader_peek_int16_be_inline(reader,val))
#define gst_byte_reader_peek_uint24_le(reader,val) \
G_LIKELY(_gst_byte_reader_peek_uint24_le_inline(reader,val))
#define gst_byte_reader_peek_int24_le(reader,val) \
G_LIKELY(_gst_byte_reader_peek_int24_le_inline(reader,val))
#define gst_byte_reader_peek_uint24_be(reader,val) \
G_LIKELY(_gst_byte_reader_peek_uint24_be_inline(reader,val))
#define gst_byte_reader_peek_int24_be(reader,val) \
G_LIKELY(_gst_byte_reader_peek_int24_be_inline(reader,val))
#define gst_byte_reader_peek_uint32_le(reader,val) \
G_LIKELY(_gst_byte_reader_peek_uint32_le_inline(reader,val))
#define gst_byte_reader_peek_int32_le(reader,val) \
G_LIKELY(_gst_byte_reader_peek_int32_le_inline(reader,val))
#define gst_byte_reader_peek_uint32_be(reader,val) \
G_LIKELY(_gst_byte_reader_peek_uint32_be_inline(reader,val))
#define gst_byte_reader_peek_int32_be(reader,val) \
G_LIKELY(_gst_byte_reader_peek_int32_be_inline(reader,val))
#define gst_byte_reader_peek_uint64_le(reader,val) \
G_LIKELY(_gst_byte_reader_peek_uint64_le_inline(reader,val))
#define gst_byte_reader_peek_int64_le(reader,val) \
G_LIKELY(_gst_byte_reader_peek_int64_le_inline(reader,val))
#define gst_byte_reader_peek_uint64_be(reader,val) \
G_LIKELY(_gst_byte_reader_peek_uint64_be_inline(reader,val))
#define gst_byte_reader_peek_int64_be(reader,val) \
G_LIKELY(_gst_byte_reader_peek_int64_be_inline(reader,val))
#define gst_byte_reader_get_float32_le(reader,val) \
G_LIKELY(_gst_byte_reader_get_float32_le_inline(reader,val))
#define gst_byte_reader_get_float32_be(reader,val) \
G_LIKELY(_gst_byte_reader_get_float32_be_inline(reader,val))
#define gst_byte_reader_get_float64_le(reader,val) \
G_LIKELY(_gst_byte_reader_get_float64_le_inline(reader,val))
#define gst_byte_reader_get_float64_be(reader,val) \
G_LIKELY(_gst_byte_reader_get_float64_be_inline(reader,val))
#define gst_byte_reader_peek_float32_le(reader,val) \
G_LIKELY(_gst_byte_reader_peek_float32_le_inline(reader,val))
#define gst_byte_reader_peek_float32_be(reader,val) \
G_LIKELY(_gst_byte_reader_peek_float32_be_inline(reader,val))
#define gst_byte_reader_peek_float64_le(reader,val) \
G_LIKELY(_gst_byte_reader_peek_float64_le_inline(reader,val))
#define gst_byte_reader_peek_float64_be(reader,val) \
G_LIKELY(_gst_byte_reader_peek_float64_be_inline(reader,val))
#endif /* GST_BYTE_READER_DISABLE_INLINES */
static inline void
_gst_byte_reader_init_inline (GstByteReader * reader, const guint8 * data, guint size)
{
g_return_if_fail (reader != NULL);
reader->data = data;
reader->size = size;
reader->byte = 0;
}
static inline gboolean
_gst_byte_reader_peek_sub_reader_inline (GstByteReader * reader,
GstByteReader * sub_reader, guint size)
{
g_return_val_if_fail (reader != NULL, FALSE);
g_return_val_if_fail (sub_reader != NULL, FALSE);
if (_gst_byte_reader_get_remaining_unchecked (reader) < size)
return FALSE;
sub_reader->data = reader->data + reader->byte;
sub_reader->byte = 0;
sub_reader->size = size;
return TRUE;
}
static inline gboolean
_gst_byte_reader_get_sub_reader_inline (GstByteReader * reader,
GstByteReader * sub_reader, guint size)
{
if (!_gst_byte_reader_peek_sub_reader_inline (reader, sub_reader, size))
return FALSE;
gst_byte_reader_skip_unchecked (reader, size);
return TRUE;
}
static inline gboolean
_gst_byte_reader_dup_data_inline (GstByteReader * reader, guint size, guint8 ** val)
{
g_return_val_if_fail (reader != NULL, FALSE);
g_return_val_if_fail (val != NULL, FALSE);
if (G_UNLIKELY (size > reader->size || _gst_byte_reader_get_remaining_unchecked (reader) < size))
return FALSE;
*val = gst_byte_reader_dup_data_unchecked (reader, size);
return TRUE;
}
static inline gboolean
_gst_byte_reader_get_data_inline (GstByteReader * reader, guint size, const guint8 ** val)
{
g_return_val_if_fail (reader != NULL, FALSE);
g_return_val_if_fail (val != NULL, FALSE);
if (G_UNLIKELY (size > reader->size || _gst_byte_reader_get_remaining_unchecked (reader) < size))
return FALSE;
*val = gst_byte_reader_get_data_unchecked (reader, size);
return TRUE;
}
static inline gboolean
_gst_byte_reader_peek_data_inline (const GstByteReader * reader, guint size, const guint8 ** val)
{
g_return_val_if_fail (reader != NULL, FALSE);
g_return_val_if_fail (val != NULL, FALSE);
if (G_UNLIKELY (size > reader->size || _gst_byte_reader_get_remaining_unchecked (reader) < size))
return FALSE;
*val = gst_byte_reader_peek_data_unchecked (reader);
return TRUE;
}
static inline guint
_gst_byte_reader_get_pos_inline (const GstByteReader * reader)
{
g_return_val_if_fail (reader != NULL, 0);
return _gst_byte_reader_get_pos_unchecked (reader);
}
static inline gboolean
_gst_byte_reader_skip_inline (GstByteReader * reader, guint nbytes)
{
g_return_val_if_fail (reader != NULL, FALSE);
if (G_UNLIKELY (_gst_byte_reader_get_remaining_unchecked (reader) < nbytes))
return FALSE;
reader->byte += nbytes;
return TRUE;
}
#ifndef GST_BYTE_READER_DISABLE_INLINES
#define gst_byte_reader_dup_data(reader,size,val) \
G_LIKELY(_gst_byte_reader_dup_data_inline(reader,size,val))
#define gst_byte_reader_get_data(reader,size,val) \
G_LIKELY(_gst_byte_reader_get_data_inline(reader,size,val))
#define gst_byte_reader_peek_data(reader,size,val) \
G_LIKELY(_gst_byte_reader_peek_data_inline(reader,size,val))
#define gst_byte_reader_skip(reader,nbytes) \
G_LIKELY(_gst_byte_reader_skip_inline(reader,nbytes))
#endif /* GST_BYTE_READER_DISABLE_INLINES */
G_END_DECLS
#endif /* __GST_BYTE_READER_H__ */
File diff suppressed because it is too large Load Diff
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+545
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@@ -0,0 +1,545 @@
/* Gstreamer
* Copyright (C) <2011> Intel Corporation
* Copyright (C) <2011> Collabora Ltd.
* Copyright (C) <2011> Thibault Saunier <thibault.saunier@collabora.com>
*
* Some bits C-c,C-v'ed and s/4/3 from h264parse and videoparsers/h264parse.c:
* Copyright (C) <2010> Mark Nauwelaerts <mark.nauwelaerts@collabora.co.uk>
* Copyright (C) <2010> Collabora Multimedia
* Copyright (C) <2010> Nokia Corporation
*
* (C) 2005 Michal Benes <michal.benes@itonis.tv>
* (C) 2008 Wim Taymans <wim.taymans@gmail.com>
*
* 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., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
/*
* Common code for NAL parsing from h264 and h265 parsers.
*/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include "nalutils.h"
/****** Nal parser ******/
void
nal_reader_init (NalReader * nr, const guint8 * data, guint size)
{
nr->data = data;
nr->size = size;
nr->n_epb = 0;
nr->byte = 0;
nr->bits_in_cache = 0;
/* fill with something other than 0 to detect emulation prevention bytes */
nr->first_byte = 0xff;
nr->epb_cache = 0xff;
nr->cache = 0xff;
}
gboolean
nal_reader_read (NalReader * nr, guint nbits)
{
if (G_UNLIKELY (nr->byte * 8 + (nbits - nr->bits_in_cache) > nr->size * 8)) {
GST_DEBUG ("Can not read %u bits, bits in cache %u, Byte * 8 %u, size in "
"bits %u", nbits, nr->bits_in_cache, nr->byte * 8, nr->size * 8);
return FALSE;
}
while (nr->bits_in_cache < nbits) {
guint8 byte;
next_byte:
if (G_UNLIKELY (nr->byte >= nr->size))
return FALSE;
byte = nr->data[nr->byte++];
nr->epb_cache = (nr->epb_cache << 8) | byte;
/* check if the byte is a emulation_prevention_three_byte */
if ((nr->epb_cache & 0xffffff) == 0x3) {
nr->n_epb++;
goto next_byte;
}
nr->cache = (nr->cache << 8) | nr->first_byte;
nr->first_byte = byte;
nr->bits_in_cache += 8;
}
return TRUE;
}
/* Skips the specified amount of bits. This is only suitable to a
cacheable number of bits */
gboolean
nal_reader_skip (NalReader * nr, guint nbits)
{
g_assert (nbits <= 8 * sizeof (nr->cache));
if (G_UNLIKELY (!nal_reader_read (nr, nbits)))
return FALSE;
nr->bits_in_cache -= nbits;
return TRUE;
}
/* Generic version to skip any number of bits */
gboolean
nal_reader_skip_long (NalReader * nr, guint nbits)
{
/* Leave out enough bits in the cache once we are finished */
const guint skip_size = 4 * sizeof (nr->cache);
guint remaining = nbits;
nbits %= skip_size;
while (remaining > 0) {
if (!nal_reader_skip (nr, nbits))
return FALSE;
remaining -= nbits;
nbits = skip_size;
}
return TRUE;
}
guint
nal_reader_get_pos (const NalReader * nr)
{
return nr->byte * 8 - nr->bits_in_cache;
}
guint
nal_reader_get_remaining (const NalReader * nr)
{
return (nr->size - nr->byte) * 8 + nr->bits_in_cache;
}
guint
nal_reader_get_epb_count (const NalReader * nr)
{
return nr->n_epb;
}
#define NAL_READER_READ_BITS(bits) \
gboolean \
nal_reader_get_bits_uint##bits (NalReader *nr, guint##bits *val, guint nbits) \
{ \
guint shift; \
\
if (!nal_reader_read (nr, nbits)) \
return FALSE; \
\
/* bring the required bits down and truncate */ \
shift = nr->bits_in_cache - nbits; \
*val = nr->first_byte >> shift; \
\
*val |= nr->cache << (8 - shift); \
/* mask out required bits */ \
if (nbits < bits) \
*val &= ((guint##bits)1 << nbits) - 1; \
\
nr->bits_in_cache = shift; \
\
return TRUE; \
} \
NAL_READER_READ_BITS (8);
NAL_READER_READ_BITS (16);
NAL_READER_READ_BITS (32);
#define NAL_READER_PEEK_BITS(bits) \
gboolean \
nal_reader_peek_bits_uint##bits (const NalReader *nr, guint##bits *val, guint nbits) \
{ \
NalReader tmp; \
\
tmp = *nr; \
return nal_reader_get_bits_uint##bits (&tmp, val, nbits); \
}
NAL_READER_PEEK_BITS (8);
gboolean
nal_reader_get_ue (NalReader * nr, guint32 * val)
{
guint i = 0;
guint8 bit;
guint32 value;
if (G_UNLIKELY (!nal_reader_get_bits_uint8 (nr, &bit, 1)))
return FALSE;
while (bit == 0) {
i++;
if (G_UNLIKELY (!nal_reader_get_bits_uint8 (nr, &bit, 1)))
return FALSE;
}
if (G_UNLIKELY (i > 31))
return FALSE;
if (G_UNLIKELY (!nal_reader_get_bits_uint32 (nr, &value, i)))
return FALSE;
*val = (1 << i) - 1 + value;
return TRUE;
}
gboolean
nal_reader_get_se (NalReader * nr, gint32 * val)
{
guint32 value;
if (G_UNLIKELY (!nal_reader_get_ue (nr, &value)))
return FALSE;
if (value % 2)
*val = (value / 2) + 1;
else
*val = -(value / 2);
return TRUE;
}
gboolean
nal_reader_is_byte_aligned (NalReader * nr)
{
if (nr->bits_in_cache != 0)
return FALSE;
return TRUE;
}
gboolean
nal_reader_has_more_data (NalReader * nr)
{
NalReader nr_tmp;
guint remaining, nbits;
guint8 rbsp_stop_one_bit, zero_bits;
remaining = nal_reader_get_remaining (nr);
if (remaining == 0)
return FALSE;
nr_tmp = *nr;
nr = &nr_tmp;
/* The spec defines that more_rbsp_data() searches for the last bit
equal to 1, and that it is the rbsp_stop_one_bit. Subsequent bits
until byte boundary is reached shall be zero.
This means that more_rbsp_data() is FALSE if the next bit is 1
and the remaining bits until byte boundary are zero. One way to
be sure that this bit was the very last one, is that every other
bit after we reached byte boundary are also set to zero.
Otherwise, if the next bit is 0 or if there are non-zero bits
afterwards, then then we have more_rbsp_data() */
if (!nal_reader_get_bits_uint8 (nr, &rbsp_stop_one_bit, 1))
return FALSE;
if (!rbsp_stop_one_bit)
return TRUE;
nbits = --remaining % 8;
while (remaining > 0) {
if (!nal_reader_get_bits_uint8 (nr, &zero_bits, nbits))
return FALSE;
if (zero_bits != 0)
return TRUE;
remaining -= nbits;
nbits = 8;
}
return FALSE;
}
/*********** end of nal parser ***************/
gint
scan_for_start_codes (const guint8 * data, guint size)
{
GstByteReader br;
gst_byte_reader_init (&br, data, size);
/* NALU not empty, so we can at least expect 1 (even 2) bytes following sc */
return gst_byte_reader_masked_scan_uint32 (&br, 0xffffff00, 0x00000100,
0, size);
}
void
nal_writer_init (NalWriter * nw, guint nal_prefix_size, gboolean packetized)
{
g_return_if_fail (nw != NULL);
g_return_if_fail ((packetized && nal_prefix_size > 1 && nal_prefix_size < 5)
|| (!packetized && (nal_prefix_size == 3 || nal_prefix_size == 4)));
gst_bit_writer_init (&nw->bw);
nw->nal_prefix_size = nal_prefix_size;
nw->packetized = packetized;
}
void
nal_writer_reset (NalWriter * nw)
{
g_return_if_fail (nw != NULL);
gst_bit_writer_reset (&nw->bw);
memset (nw, 0, sizeof (NalWriter));
}
gboolean
nal_writer_do_rbsp_trailing_bits (NalWriter * nw)
{
g_return_val_if_fail (nw != NULL, FALSE);
if (!gst_bit_writer_put_bits_uint8 (&nw->bw, 1, 1)) {
GST_WARNING ("Cannot put trailing bits");
return FALSE;
}
if (!gst_bit_writer_align_bytes (&nw->bw, 0)) {
GST_WARNING ("Cannot put align bits");
return FALSE;
}
return TRUE;
}
static gpointer
nal_writer_create_nal_data (NalWriter * nw, guint32 * ret_size)
{
GstBitWriter bw;
gint i;
guint8 *src, *dst;
gsize size;
gpointer data;
/* scan to put emulation_prevention_three_byte */
size = GST_BIT_WRITER_BIT_SIZE (&nw->bw) >> 3;
src = GST_BIT_WRITER_DATA (&nw->bw);
gst_bit_writer_init_with_size (&bw, size + nw->nal_prefix_size, FALSE);
for (i = 0; i < nw->nal_prefix_size - 1; i++)
gst_bit_writer_put_bits_uint8 (&bw, 0, 8);
gst_bit_writer_put_bits_uint8 (&bw, 1, 8);
for (i = 0; i < size; i++) {
guint pos = (GST_BIT_WRITER_BIT_SIZE (&bw) >> 3);
dst = GST_BIT_WRITER_DATA (&bw);
if (pos >= nw->nal_prefix_size + 2 &&
dst[pos - 2] == 0 && dst[pos - 1] == 0 && src[i] <= 0x3) {
gst_bit_writer_put_bits_uint8 (&bw, 0x3, 8);
}
gst_bit_writer_put_bits_uint8 (&bw, src[i], 8);
}
*ret_size = bw.bit_size >> 3;
data = gst_bit_writer_reset_and_get_data (&bw);
if (nw->packetized) {
size = *ret_size - nw->nal_prefix_size;
switch (nw->nal_prefix_size) {
case 1:
GST_WRITE_UINT8 (data, size);
break;
case 2:
GST_WRITE_UINT16_BE (data, size);
break;
case 3:
GST_WRITE_UINT24_BE (data, size);
break;
case 4:
GST_WRITE_UINT32_BE (data, size);
break;
default:
g_assert_not_reached ();
break;
}
}
return data;
}
GstMemory *
nal_writer_reset_and_get_memory (NalWriter * nw)
{
guint32 size = 0;
GstMemory *ret = NULL;
gpointer data;
g_return_val_if_fail (nw != NULL, NULL);
if ((GST_BIT_WRITER_BIT_SIZE (&nw->bw) >> 3) == 0) {
GST_WARNING ("No written byte");
goto done;
}
if ((GST_BIT_WRITER_BIT_SIZE (&nw->bw) & 0x7) != 0) {
GST_WARNING ("Written stream is not byte aligned");
if (!nal_writer_do_rbsp_trailing_bits (nw))
goto done;
}
data = nal_writer_create_nal_data (nw, &size);
if (!data) {
GST_WARNING ("Failed to create nal data");
goto done;
}
ret = gst_memory_new_wrapped (0, data, size, 0, size, data, g_free);
done:
gst_bit_writer_reset (&nw->bw);
return ret;
}
guint8 *
nal_writer_reset_and_get_data (NalWriter * nw, guint32 * ret_size)
{
guint32 size = 0;
guint8 *data = NULL;
g_return_val_if_fail (nw != NULL, NULL);
g_return_val_if_fail (ret_size != NULL, NULL);
*ret_size = 0;
if ((GST_BIT_WRITER_BIT_SIZE (&nw->bw) >> 3) == 0) {
GST_WARNING ("No written byte");
goto done;
}
if ((GST_BIT_WRITER_BIT_SIZE (&nw->bw) & 0x7) != 0) {
GST_WARNING ("Written stream is not byte aligned");
if (!nal_writer_do_rbsp_trailing_bits (nw))
goto done;
}
data = nal_writer_create_nal_data (nw, &size);
if (!data) {
GST_WARNING ("Failed to create nal data");
goto done;
}
*ret_size = size;
done:
gst_bit_writer_reset (&nw->bw);
return data;
}
gboolean
nal_writer_put_bits_uint8 (NalWriter * nw, guint8 value, guint nbits)
{
g_return_val_if_fail (nw != NULL, FALSE);
if (!gst_bit_writer_put_bits_uint8 (&nw->bw, value, nbits))
return FALSE;
return TRUE;
}
gboolean
nal_writer_put_bits_uint16 (NalWriter * nw, guint16 value, guint nbits)
{
g_return_val_if_fail (nw != NULL, FALSE);
if (!gst_bit_writer_put_bits_uint16 (&nw->bw, value, nbits))
return FALSE;
return TRUE;
}
gboolean
nal_writer_put_bits_uint32 (NalWriter * nw, guint32 value, guint nbits)
{
g_return_val_if_fail (nw != NULL, FALSE);
if (!gst_bit_writer_put_bits_uint32 (&nw->bw, value, nbits))
return FALSE;
return TRUE;
}
gboolean
nal_writer_put_bytes (NalWriter * nw, const guint8 * data, guint nbytes)
{
g_return_val_if_fail (nw != NULL, FALSE);
g_return_val_if_fail (data != NULL, FALSE);
g_return_val_if_fail (nbytes != 0, FALSE);
if (!gst_bit_writer_put_bytes (&nw->bw, data, nbytes))
return FALSE;
return TRUE;
}
gboolean
nal_writer_put_ue (NalWriter * nw, guint32 value)
{
guint leading_zeros;
guint rest;
g_return_val_if_fail (nw != NULL, FALSE);
count_exp_golomb_bits (value, &leading_zeros, &rest);
/* write leading zeros */
if (leading_zeros) {
if (!nal_writer_put_bits_uint32 (nw, 0, leading_zeros))
return FALSE;
}
/* write the rest */
if (!nal_writer_put_bits_uint32 (nw, value + 1, rest))
return FALSE;
return TRUE;
}
gboolean
count_exp_golomb_bits (guint32 value, guint * leading_zeros, guint * rest)
{
guint32 x;
guint count = 0;
/* https://en.wikipedia.org/wiki/Exponential-Golomb_coding */
/* count bits of value + 1 */
x = value + 1;
while (x) {
count++;
x >>= 1;
}
if (leading_zeros) {
if (count > 1)
*leading_zeros = count - 1;
else
*leading_zeros = 0;
}
if (rest) {
*rest = count;
}
return TRUE;
}
+269
View File
@@ -0,0 +1,269 @@
/* Gstreamer
* Copyright (C) <2011> Intel Corporation
* Copyright (C) <2011> Collabora Ltd.
* Copyright (C) <2011> Thibault Saunier <thibault.saunier@collabora.com>
*
* Some bits C-c,C-v'ed and s/4/3 from h264parse and videoparsers/h264parse.c:
* Copyright (C) <2010> Mark Nauwelaerts <mark.nauwelaerts@collabora.co.uk>
* Copyright (C) <2010> Collabora Multimedia
* Copyright (C) <2010> Nokia Corporation
*
* (C) 2005 Michal Benes <michal.benes@itonis.tv>
* (C) 2008 Wim Taymans <wim.taymans@gmail.com>
*
* 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., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
/**
* Common code for NAL parsing from h264 and h265 parsers.
*/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include <gst/base/gstbytereader.h>
#include <gst/base/gstbitreader.h>
#include <gst/base/gstbitwriter.h>
typedef struct
{
const guint8 *data;
guint size;
guint n_epb; /* Number of emulation prevention bytes */
guint byte; /* Byte position */
guint bits_in_cache; /* bitpos in the cache of next bit */
guint8 first_byte;
guint32 epb_cache; /* cache 3 bytes to check emulation prevention bytes */
guint64 cache; /* cached bytes */
} NalReader;
typedef struct
{
GstBitWriter bw;
guint nal_prefix_size;
gboolean packetized;
} NalWriter;
G_GNUC_INTERNAL
void nal_reader_init (NalReader * nr, const guint8 * data, guint size);
G_GNUC_INTERNAL
gboolean nal_reader_read (NalReader * nr, guint nbits);
G_GNUC_INTERNAL
gboolean nal_reader_skip (NalReader * nr, guint nbits);
G_GNUC_INTERNAL
gboolean nal_reader_skip_long (NalReader * nr, guint nbits);
G_GNUC_INTERNAL
guint nal_reader_get_pos (const NalReader * nr);
G_GNUC_INTERNAL
guint nal_reader_get_remaining (const NalReader * nr);
G_GNUC_INTERNAL
guint nal_reader_get_epb_count (const NalReader * nr);
G_GNUC_INTERNAL
gboolean nal_reader_is_byte_aligned (NalReader * nr);
G_GNUC_INTERNAL
gboolean nal_reader_has_more_data (NalReader * nr);
#define NAL_READER_READ_BITS_H(bits) \
G_GNUC_INTERNAL \
gboolean nal_reader_get_bits_uint##bits (NalReader *nr, guint##bits *val, guint nbits)
NAL_READER_READ_BITS_H (8);
NAL_READER_READ_BITS_H (16);
NAL_READER_READ_BITS_H (32);
#define NAL_READER_PEEK_BITS_H(bits) \
G_GNUC_INTERNAL \
gboolean nal_reader_peek_bits_uint##bits (const NalReader *nr, guint##bits *val, guint nbits)
NAL_READER_PEEK_BITS_H (8);
G_GNUC_INTERNAL
gboolean nal_reader_get_ue (NalReader * nr, guint32 * val);
G_GNUC_INTERNAL
gboolean nal_reader_get_se (NalReader * nr, gint32 * val);
#define CHECK_ALLOWED_MAX_WITH_DEBUG(dbg, val, max) { \
if (val > max) { \
GST_WARNING ("value for '" dbg "' greater than max. value: %d, max %d", \
val, max); \
goto error; \
} \
}
#define CHECK_ALLOWED_MAX(val, max) \
CHECK_ALLOWED_MAX_WITH_DEBUG (G_STRINGIFY (val), val, max)
#define CHECK_ALLOWED_WITH_DEBUG(dbg, val, min, max) { \
if (val < min || val > max) { \
GST_WARNING ("value for '" dbg "' not in allowed range. value: %d, range %d-%d", \
val, min, max); \
goto error; \
} \
}
#define CHECK_ALLOWED(val, min, max) \
CHECK_ALLOWED_WITH_DEBUG (G_STRINGIFY (val), val, min, max)
#define READ_UINT8(nr, val, nbits) { \
if (!nal_reader_get_bits_uint8 (nr, &val, nbits)) { \
GST_WARNING ("failed to read uint8 for '" G_STRINGIFY (val) "', nbits: %d", nbits); \
goto error; \
} \
}
#define READ_UINT16(nr, val, nbits) { \
if (!nal_reader_get_bits_uint16 (nr, &val, nbits)) { \
GST_WARNING ("failed to read uint16 for '" G_STRINGIFY (val) "', nbits: %d", nbits); \
goto error; \
} \
}
#define READ_UINT32(nr, val, nbits) { \
if (!nal_reader_get_bits_uint32 (nr, &val, nbits)) { \
GST_WARNING ("failed to read uint32 for '" G_STRINGIFY (val) "', nbits: %d", nbits); \
goto error; \
} \
}
#define READ_UINT64(nr, val, nbits) { \
if (!nal_reader_get_bits_uint64 (nr, &val, nbits)) { \
GST_WARNING ("failed to read uint32 for '" G_STRINGIFY (val) "', nbits: %d", nbits); \
goto error; \
} \
}
#define READ_UE(nr, val) { \
if (!nal_reader_get_ue (nr, &val)) { \
GST_WARNING ("failed to read UE for '" G_STRINGIFY (val) "'"); \
goto error; \
} \
}
#define READ_UE_ALLOWED(nr, val, min, max) { \
guint32 tmp; \
READ_UE (nr, tmp); \
CHECK_ALLOWED_WITH_DEBUG (G_STRINGIFY (val), tmp, min, max); \
val = tmp; \
}
#define READ_UE_MAX(nr, val, max) { \
guint32 tmp; \
READ_UE (nr, tmp); \
CHECK_ALLOWED_MAX_WITH_DEBUG (G_STRINGIFY (val), tmp, max); \
val = tmp; \
}
#define READ_SE(nr, val) { \
if (!nal_reader_get_se (nr, &val)) { \
GST_WARNING ("failed to read SE for '" G_STRINGIFY (val) "'"); \
goto error; \
} \
}
#define READ_SE_ALLOWED(nr, val, min, max) { \
gint32 tmp; \
READ_SE (nr, tmp); \
CHECK_ALLOWED_WITH_DEBUG (G_STRINGIFY (val), tmp, min, max); \
val = tmp; \
}
G_GNUC_INTERNAL
gint scan_for_start_codes (const guint8 * data, guint size);
G_GNUC_INTERNAL
void nal_writer_init (NalWriter * nw, guint nal_prefix_size, gboolean packetized);
G_GNUC_INTERNAL
void nal_writer_reset (NalWriter * nw);
G_GNUC_INTERNAL
gboolean nal_writer_do_rbsp_trailing_bits (NalWriter * nw);
G_GNUC_INTERNAL
GstMemory * nal_writer_reset_and_get_memory (NalWriter * nw);
G_GNUC_INTERNAL
guint8 * nal_writer_reset_and_get_data (NalWriter * nw, guint32 * ret_size);
G_GNUC_INTERNAL
gboolean nal_writer_put_bits_uint8 (NalWriter * nw, guint8 value, guint nbits);
G_GNUC_INTERNAL
gboolean nal_writer_put_bits_uint16 (NalWriter * nw, guint16 value, guint nbits);
G_GNUC_INTERNAL
gboolean nal_writer_put_bits_uint32 (NalWriter * nw, guint32 value, guint nbits);
G_GNUC_INTERNAL
gboolean nal_writer_put_bytes (NalWriter * nw, const guint8 * data, guint nbytes);
G_GNUC_INTERNAL
gboolean nal_writer_put_ue (NalWriter * nw, guint32 value);
G_GNUC_INTERNAL
gboolean count_exp_golomb_bits (guint32 value, guint * leading_zeros, guint * rest);
#define WRITE_UINT8(nw, val, nbits) { \
if (!nal_writer_put_bits_uint8 (nw, val, nbits)) { \
GST_WARNING ("failed to write uint8 for '" G_STRINGIFY (val) "', nbits: %d", nbits); \
goto error; \
} \
}
#define WRITE_UINT16(nw, val, nbits) { \
if (!nal_writer_put_bits_uint16 (nw, val, nbits)) { \
GST_WARNING ("failed to write uint16 for '" G_STRINGIFY (val) "', nbits: %d", nbits); \
goto error; \
} \
}
#define WRITE_UINT32(nw, val, nbits) { \
if (!nal_writer_put_bits_uint32 (nw, val, nbits)) { \
GST_WARNING ("failed to write uint32 for '" G_STRINGIFY (val) "', nbits: %d", nbits); \
goto error; \
} \
}
#define WRITE_BYTES(nw, data, nbytes) { \
if (!nal_writer_put_bytes (nw, data, nbytes)) { \
GST_WARNING ("failed to write bytes for '" G_STRINGIFY (val) "', nbits: %d", nbytes); \
goto error; \
} \
}
#define WRITE_UE(nw, val) { \
if (!nal_writer_put_ue (nw, val)) { \
GST_WARNING ("failed to write ue for '" G_STRINGIFY (val) "'"); \
goto error; \
} \
}
static inline guint32 div_ceil (guint32 a, guint32 b)
{
/* http://blog.pkh.me/p/36-figuring-out-round%2C-floor-and-ceil-with-integer-division.html */
g_assert (b > 0);
return a / b + (a % b > 0);
}