GstBitReader

typedef struct {
  const guint8 *data;
  guint size;

  guint byte;  /* Byte position */
  guint bit;   /* Bit position in the current byte */
} GstBitReader;

A bit reader instance.

GST_BIT_READER_INIT()

#define GST_BIT_READER_INIT(data, size) {data, size, 0, 0}

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().

Since 0.10.22

GST_BIT_READER_INIT_FROM_BUFFER()

#define GST_BIT_READER_INIT_FROM_BUFFER(buffer) {GST_BUFFER_DATA (buffer), GST_BUFFER_SIZE (buffer), 0, 0}

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().

Since 0.10.22

gst_bit_reader_new ()

GstBitReader*       gst_bit_reader_new                  (const guint8 *data,
                                                         guint size);

Create a new GstBitReader instance, which will read from data.

Since 0.10.22

gst_bit_reader_new_from_buffer ()

GstBitReader*       gst_bit_reader_new_from_buffer      (const GstBuffer *buffer);

Create a new GstBitReader instance, which will read from the GstBuffer buffer.

Since 0.10.22

gst_bit_reader_free ()

void                gst_bit_reader_free                 (GstBitReader *reader);

Frees a GstBitReader instance, which was previously allocated by gst_bit_reader_new() or gst_bit_reader_new_from_buffer().

Since 0.10.22

gst_bit_reader_init ()

void                gst_bit_reader_init                 (GstBitReader *reader,
                                                         const guint8 *data,
                                                         guint size);

Initializes a GstBitReader instance to read from data. This function can be called on already initialized instances.

Since 0.10.22

gst_bit_reader_init_from_buffer ()

void                gst_bit_reader_init_from_buffer     (GstBitReader *reader,
                                                         const GstBuffer *buffer);

Initializes a GstBitReader instance to read from buffer. This function can be called on already initialized instances.

Since 0.10.22

gst_bit_reader_get_pos ()

guint               gst_bit_reader_get_pos              (const GstBitReader *reader);

Returns the current position of a GstBitReader instance in bits.

Since 0.10.22

gst_bit_reader_get_remaining ()

guint               gst_bit_reader_get_remaining        (const GstBitReader *reader);

Returns the remaining number of bits of a GstBitReader instance.

Since 0.10.22

gst_bit_reader_set_pos ()

gboolean            gst_bit_reader_set_pos              (GstBitReader *reader,
                                                         guint pos);

Sets the new position of a GstBitReader instance to pos in bits.

Since 0.10.22

gst_bit_reader_skip ()

gboolean            gst_bit_reader_skip                 (GstBitReader *reader,
                                                         guint nbits);

Skips nbits bits of the GstBitReader instance.

Since 0.10.22

gst_bit_reader_skip_to_byte ()

gboolean            gst_bit_reader_skip_to_byte         (GstBitReader *reader);

Skips until the next byte.

Since 0.10.22

gst_bit_reader_get_bits_uint16 ()

gboolean            gst_bit_reader_get_bits_uint16      (GstBitReader *reader,
                                                         guint16 *val,
                                                         guint nbits);

Read nbits bits into val and update the current position.

Since 0.10.22

gst_bit_reader_get_bits_uint32 ()

gboolean            gst_bit_reader_get_bits_uint32      (GstBitReader *reader,
                                                         guint32 *val,
                                                         guint nbits);

Read nbits bits into val and update the current position.

Since 0.10.22

gst_bit_reader_get_bits_uint64 ()

gboolean            gst_bit_reader_get_bits_uint64      (GstBitReader *reader,
                                                         guint64 *val,
                                                         guint nbits);

Read nbits bits into val and update the current position.

Since 0.10.22

gst_bit_reader_get_bits_uint8 ()

gboolean            gst_bit_reader_get_bits_uint8       (GstBitReader *reader,
                                                         guint8 *val,
                                                         guint nbits);

Read nbits bits into val and update the current position.

Since 0.10.22

gst_bit_reader_peek_bits_uint16 ()

gboolean            gst_bit_reader_peek_bits_uint16     (const GstBitReader *reader,
                                                         guint16 *val,
                                                         guint nbits);

Read nbits bits into val but keep the current position.

Since 0.10.22

gst_bit_reader_peek_bits_uint32 ()

gboolean            gst_bit_reader_peek_bits_uint32     (const GstBitReader *reader,
                                                         guint32 *val,
                                                         guint nbits);

Read nbits bits into val but keep the current position.

Since 0.10.22

gst_bit_reader_peek_bits_uint64 ()

gboolean            gst_bit_reader_peek_bits_uint64     (const GstBitReader *reader,
                                                         guint64 *val,
                                                         guint nbits);

Read nbits bits into val but keep the current position.

Since 0.10.22

gst_bit_reader_peek_bits_uint8 ()

gboolean            gst_bit_reader_peek_bits_uint8      (const GstBitReader *reader,
                                                         guint8 *val,
                                                         guint nbits);

Read nbits bits into val but keep the current position.

Since 0.10.22