| /* GStreamer |
| * Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu> |
| * 2000 Wim Taymans <wtay@chello.be> |
| * 2002 Thomas Vander Stichele <thomas@apestaart.org> |
| * |
| * gstutils.h: Header for various utility functions |
| * |
| * 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_UTILS_H__ |
| #define __GST_UTILS_H__ |
| |
| #include <glib.h> |
| #include <gst/gstconfig.h> |
| #include <gst/gstbin.h> |
| #include <gst/gstparse.h> |
| |
| G_BEGIN_DECLS |
| |
| GST_API |
| void gst_util_set_value_from_string (GValue *value, const gchar *value_str); |
| |
| GST_API |
| void gst_util_set_object_arg (GObject *object, const gchar *name, const gchar *value); |
| |
| GST_API |
| gboolean gst_util_set_object_array (GObject * object, const gchar * name, |
| const GValueArray * array); |
| GST_API |
| gboolean gst_util_get_object_array (GObject * object, const gchar * name, |
| GValueArray ** array); |
| GST_API |
| void gst_util_dump_mem (const guchar *mem, guint size); |
| |
| GST_API |
| void gst_util_dump_buffer (GstBuffer * buf); |
| |
| GST_API |
| guint64 gst_util_gdouble_to_guint64 (gdouble value) G_GNUC_CONST; |
| |
| GST_API |
| gdouble gst_util_guint64_to_gdouble (guint64 value) G_GNUC_CONST; |
| |
| /** |
| * gst_guint64_to_gdouble: |
| * @value: the #guint64 value to convert |
| * |
| * Convert @value to a gdouble. |
| * |
| * Returns: @value converted to a #gdouble. |
| */ |
| |
| /** |
| * gst_gdouble_to_guint64: |
| * @value: the #gdouble value to convert |
| * |
| * Convert @value to a guint64. |
| * |
| * Returns: @value converted to a #guint64. |
| */ |
| #ifdef WIN32 |
| #define gst_gdouble_to_guint64(value) gst_util_gdouble_to_guint64(value) |
| #define gst_guint64_to_gdouble(value) gst_util_guint64_to_gdouble(value) |
| #else |
| #define gst_gdouble_to_guint64(value) ((guint64) (value)) |
| #define gst_guint64_to_gdouble(value) ((gdouble) (value)) |
| #endif |
| |
| GST_API |
| guint64 gst_util_uint64_scale (guint64 val, guint64 num, guint64 denom); |
| |
| GST_API |
| guint64 gst_util_uint64_scale_round (guint64 val, guint64 num, guint64 denom); |
| |
| GST_API |
| guint64 gst_util_uint64_scale_ceil (guint64 val, guint64 num, guint64 denom); |
| |
| GST_API |
| guint64 gst_util_uint64_scale_int (guint64 val, gint num, gint denom); |
| |
| GST_API |
| guint64 gst_util_uint64_scale_int_round (guint64 val, gint num, gint denom); |
| |
| GST_API |
| guint64 gst_util_uint64_scale_int_ceil (guint64 val, gint num, gint denom); |
| |
| /** |
| * GST_SEQNUM_INVALID: |
| * |
| * A value which is guaranteed to never be returned by |
| * gst_util_seqnum_next(). |
| * |
| * Can be used as a default value in variables used to store seqnum. |
| * |
| * Since: 1.14 |
| */ |
| #define GST_SEQNUM_INVALID (0) |
| |
| GST_API |
| guint32 gst_util_seqnum_next (void); |
| |
| GST_API |
| gint32 gst_util_seqnum_compare (guint32 s1, guint32 s2); |
| |
| /** |
| * GST_GROUP_ID_INVALID: |
| * |
| * A value which is guaranteed to never be returned by |
| * gst_util_group_id_next(). |
| * |
| * Can be used as a default value in variables used to store group_id. |
| * |
| * Since: 1.14 |
| */ |
| #define GST_GROUP_ID_INVALID (0) |
| |
| GST_API |
| guint gst_util_group_id_next (void); |
| |
| /** |
| * GST_CALL_PARENT: |
| * @parent_class_cast: the name of the class cast macro for the parent type |
| * @name: name of the function to call |
| * @args: arguments enclosed in '( )' |
| * |
| * Just call the parent handler. This assumes that there is a variable |
| * named parent_class that points to the (duh!) parent class. Note that |
| * this macro is not to be used with things that return something, use |
| * the _WITH_DEFAULT version for that |
| */ |
| #define GST_CALL_PARENT(parent_class_cast, name, args) \ |
| ((parent_class_cast(parent_class)->name != NULL) ? \ |
| parent_class_cast(parent_class)->name args : (void) 0) |
| |
| /** |
| * GST_CALL_PARENT_WITH_DEFAULT: |
| * @parent_class_cast: the name of the class cast macro for the parent type |
| * @name: name of the function to call |
| * @args: arguments enclosed in '( )' |
| * @def_return: default result |
| * |
| * Same as GST_CALL_PARENT(), but in case there is no implementation, it |
| * evaluates to @def_return. |
| */ |
| #define GST_CALL_PARENT_WITH_DEFAULT(parent_class_cast, name, args, def_return)\ |
| ((parent_class_cast(parent_class)->name != NULL) ? \ |
| parent_class_cast(parent_class)->name args : def_return) |
| |
| /* Define PUT and GET functions for unaligned memory */ |
| #define _GST_GET(__data, __idx, __size, __shift) \ |
| (((guint##__size) (((const guint8 *) (__data))[__idx])) << (__shift)) |
| |
| #define _GST_PUT(__data, __idx, __size, __shift, __num) \ |
| (((guint8 *) (__data))[__idx] = (((guint##__size) (__num)) >> (__shift)) & 0xff) |
| |
| #ifndef __GTK_DOC_IGNORE__ |
| #if GST_HAVE_UNALIGNED_ACCESS |
| static inline guint16 __gst_fast_read16(const guint8 *v) { |
| return *(const guint16*)(const void*)(v); |
| } |
| static inline guint32 __gst_fast_read32(const guint8 *v) { |
| return *(const guint32*)(const void*)(v); |
| } |
| static inline guint64 __gst_fast_read64(const guint8 *v) { |
| return *(const guint64*)(const void*)(v); |
| } |
| static inline guint16 __gst_fast_read_swap16(const guint8 *v) { |
| return GUINT16_SWAP_LE_BE(*(const guint16*)(const void*)(v)); |
| } |
| static inline guint32 __gst_fast_read_swap32(const guint8 *v) { |
| return GUINT32_SWAP_LE_BE(*(const guint32*)(const void*)(v)); |
| } |
| static inline guint64 __gst_fast_read_swap64(const guint8 *v) { |
| return GUINT64_SWAP_LE_BE(*(const guint64*)(const void*)(v)); |
| } |
| # define _GST_FAST_READ(s, d) __gst_fast_read##s((const guint8 *)(d)) |
| # define _GST_FAST_READ_SWAP(s, d) __gst_fast_read_swap##s((const guint8 *)(d)) |
| |
| static inline void __gst_fast_write16 (guint8 *p, guint16 v) { |
| *(guint16*)(void*)(p) = v; |
| } |
| static inline void __gst_fast_write32 (guint8 *p, guint32 v) { |
| *(guint32*)(void*)(p) = v; |
| } |
| static inline void __gst_fast_write64 (guint8 *p, guint64 v) { |
| *(guint64*)(void*)(p) = v; |
| } |
| static inline void __gst_fast_write_swap16 (guint8 *p, guint16 v) { |
| *(guint16*)(void*)(p) = GUINT16_SWAP_LE_BE (v); |
| } |
| static inline void __gst_fast_write_swap32 (guint8 *p, guint32 v) { |
| *(guint32*)(void*)(p) = GUINT32_SWAP_LE_BE (v); |
| } |
| static inline void __gst_fast_write_swap64 (guint8 *p, guint64 v) { |
| *(guint64*)(void*)(p) = GUINT64_SWAP_LE_BE (v); |
| } |
| # define _GST_FAST_WRITE(s, d, v) __gst_fast_write##s((guint8 *)(d), (v)) |
| # define _GST_FAST_WRITE_SWAP(s, d, v) __gst_fast_write_swap##s((guint8 *)(d), (v)) |
| #endif |
| #endif |
| |
| |
| /** |
| * GST_READ_UINT64_BE: |
| * @data: memory location |
| * |
| * Read a 64 bit unsigned integer value in big endian format from the memory buffer. |
| */ |
| |
| /** |
| * GST_READ_UINT64_LE: |
| * @data: memory location |
| * |
| * Read a 64 bit unsigned integer value in little endian format from the memory buffer. |
| */ |
| #if GST_HAVE_UNALIGNED_ACCESS |
| # if (G_BYTE_ORDER == G_BIG_ENDIAN) |
| # define GST_READ_UINT64_BE(data) _GST_FAST_READ (64, data) |
| # define GST_READ_UINT64_LE(data) _GST_FAST_READ_SWAP (64, data) |
| # else |
| # define GST_READ_UINT64_BE(data) _GST_FAST_READ_SWAP (64, data) |
| # define GST_READ_UINT64_LE(data) _GST_FAST_READ (64, data) |
| # endif |
| #else |
| #define _GST_READ_UINT64_BE(data) (_GST_GET (data, 0, 64, 56) | \ |
| _GST_GET (data, 1, 64, 48) | \ |
| _GST_GET (data, 2, 64, 40) | \ |
| _GST_GET (data, 3, 64, 32) | \ |
| _GST_GET (data, 4, 64, 24) | \ |
| _GST_GET (data, 5, 64, 16) | \ |
| _GST_GET (data, 6, 64, 8) | \ |
| _GST_GET (data, 7, 64, 0)) |
| |
| #define _GST_READ_UINT64_LE(data) (_GST_GET (data, 7, 64, 56) | \ |
| _GST_GET (data, 6, 64, 48) | \ |
| _GST_GET (data, 5, 64, 40) | \ |
| _GST_GET (data, 4, 64, 32) | \ |
| _GST_GET (data, 3, 64, 24) | \ |
| _GST_GET (data, 2, 64, 16) | \ |
| _GST_GET (data, 1, 64, 8) | \ |
| _GST_GET (data, 0, 64, 0)) |
| |
| #define GST_READ_UINT64_BE(data) __gst_slow_read64_be((const guint8 *)(data)) |
| static inline guint64 __gst_slow_read64_be (const guint8 * data) { |
| return _GST_READ_UINT64_BE (data); |
| } |
| #define GST_READ_UINT64_LE(data) __gst_slow_read64_le((const guint8 *)(data)) |
| static inline guint64 __gst_slow_read64_le (const guint8 * data) { |
| return _GST_READ_UINT64_LE (data); |
| } |
| #endif |
| |
| /** |
| * GST_READ_UINT32_BE: |
| * @data: memory location |
| * |
| * Read a 32 bit unsigned integer value in big endian format from the memory buffer. |
| */ |
| |
| /** |
| * GST_READ_UINT32_LE: |
| * @data: memory location |
| * |
| * Read a 32 bit unsigned integer value in little endian format from the memory buffer. |
| */ |
| #if GST_HAVE_UNALIGNED_ACCESS |
| # if (G_BYTE_ORDER == G_BIG_ENDIAN) |
| # define GST_READ_UINT32_BE(data) _GST_FAST_READ (32, data) |
| # define GST_READ_UINT32_LE(data) _GST_FAST_READ_SWAP (32, data) |
| # else |
| # define GST_READ_UINT32_BE(data) _GST_FAST_READ_SWAP (32, data) |
| # define GST_READ_UINT32_LE(data) _GST_FAST_READ (32, data) |
| # endif |
| #else |
| #define _GST_READ_UINT32_BE(data) (_GST_GET (data, 0, 32, 24) | \ |
| _GST_GET (data, 1, 32, 16) | \ |
| _GST_GET (data, 2, 32, 8) | \ |
| _GST_GET (data, 3, 32, 0)) |
| |
| #define _GST_READ_UINT32_LE(data) (_GST_GET (data, 3, 32, 24) | \ |
| _GST_GET (data, 2, 32, 16) | \ |
| _GST_GET (data, 1, 32, 8) | \ |
| _GST_GET (data, 0, 32, 0)) |
| |
| #define GST_READ_UINT32_BE(data) __gst_slow_read32_be((const guint8 *)(data)) |
| static inline guint32 __gst_slow_read32_be (const guint8 * data) { |
| return _GST_READ_UINT32_BE (data); |
| } |
| #define GST_READ_UINT32_LE(data) __gst_slow_read32_le((const guint8 *)(data)) |
| static inline guint32 __gst_slow_read32_le (const guint8 * data) { |
| return _GST_READ_UINT32_LE (data); |
| } |
| #endif |
| |
| /** |
| * GST_READ_UINT24_BE: |
| * @data: memory location |
| * |
| * Read a 24 bit unsigned integer value in big endian format from the memory buffer. |
| */ |
| #define _GST_READ_UINT24_BE(data) (_GST_GET (data, 0, 32, 16) | \ |
| _GST_GET (data, 1, 32, 8) | \ |
| _GST_GET (data, 2, 32, 0)) |
| |
| #define GST_READ_UINT24_BE(data) __gst_slow_read24_be((const guint8 *)(data)) |
| static inline guint32 __gst_slow_read24_be (const guint8 * data) { |
| return _GST_READ_UINT24_BE (data); |
| } |
| |
| /** |
| * GST_READ_UINT24_LE: |
| * @data: memory location |
| * |
| * Read a 24 bit unsigned integer value in little endian format from the memory buffer. |
| */ |
| #define _GST_READ_UINT24_LE(data) (_GST_GET (data, 2, 32, 16) | \ |
| _GST_GET (data, 1, 32, 8) | \ |
| _GST_GET (data, 0, 32, 0)) |
| |
| #define GST_READ_UINT24_LE(data) __gst_slow_read24_le((const guint8 *)(data)) |
| static inline guint32 __gst_slow_read24_le (const guint8 * data) { |
| return _GST_READ_UINT24_LE (data); |
| } |
| |
| /** |
| * GST_READ_UINT16_BE: |
| * @data: memory location |
| * |
| * Read a 16 bit unsigned integer value in big endian format from the memory buffer. |
| */ |
| /** |
| * GST_READ_UINT16_LE: |
| * @data: memory location |
| * |
| * Read a 16 bit unsigned integer value in little endian format from the memory buffer. |
| */ |
| #if GST_HAVE_UNALIGNED_ACCESS |
| # if (G_BYTE_ORDER == G_BIG_ENDIAN) |
| # define GST_READ_UINT16_BE(data) _GST_FAST_READ (16, data) |
| # define GST_READ_UINT16_LE(data) _GST_FAST_READ_SWAP (16, data) |
| # else |
| # define GST_READ_UINT16_BE(data) _GST_FAST_READ_SWAP (16, data) |
| # define GST_READ_UINT16_LE(data) _GST_FAST_READ (16, data) |
| # endif |
| #else |
| #define _GST_READ_UINT16_BE(data) (_GST_GET (data, 0, 16, 8) | \ |
| _GST_GET (data, 1, 16, 0)) |
| |
| #define _GST_READ_UINT16_LE(data) (_GST_GET (data, 1, 16, 8) | \ |
| _GST_GET (data, 0, 16, 0)) |
| |
| #define GST_READ_UINT16_BE(data) __gst_slow_read16_be((const guint8 *)(data)) |
| static inline guint16 __gst_slow_read16_be (const guint8 * data) { |
| return _GST_READ_UINT16_BE (data); |
| } |
| #define GST_READ_UINT16_LE(data) __gst_slow_read16_le((const guint8 *)(data)) |
| static inline guint16 __gst_slow_read16_le (const guint8 * data) { |
| return _GST_READ_UINT16_LE (data); |
| } |
| #endif |
| |
| /** |
| * GST_READ_UINT8: |
| * @data: memory location |
| * |
| * Read an 8 bit unsigned integer value from the memory buffer. |
| */ |
| #define GST_READ_UINT8(data) (_GST_GET (data, 0, 8, 0)) |
| |
| /** |
| * GST_WRITE_UINT64_BE: |
| * @data: memory location |
| * @val: value to store |
| * |
| * Store a 64 bit unsigned integer value in big endian format into the memory buffer. |
| */ |
| /** |
| * GST_WRITE_UINT64_LE: |
| * @data: memory location |
| * @val: value to store |
| * |
| * Store a 64 bit unsigned integer value in little endian format into the memory buffer. |
| */ |
| #if GST_HAVE_UNALIGNED_ACCESS |
| # if (G_BYTE_ORDER == G_BIG_ENDIAN) |
| # define GST_WRITE_UINT64_BE(data,val) _GST_FAST_WRITE(64,data,val) |
| # define GST_WRITE_UINT64_LE(data,val) _GST_FAST_WRITE_SWAP(64,data,val) |
| # else |
| # define GST_WRITE_UINT64_BE(data,val) _GST_FAST_WRITE_SWAP(64,data,val) |
| # define GST_WRITE_UINT64_LE(data,val) _GST_FAST_WRITE(64,data,val) |
| # endif |
| #else |
| #define GST_WRITE_UINT64_BE(data,val) do { \ |
| gpointer __put_data = data; \ |
| guint64 __put_val = val; \ |
| _GST_PUT (__put_data, 0, 64, 56, __put_val); \ |
| _GST_PUT (__put_data, 1, 64, 48, __put_val); \ |
| _GST_PUT (__put_data, 2, 64, 40, __put_val); \ |
| _GST_PUT (__put_data, 3, 64, 32, __put_val); \ |
| _GST_PUT (__put_data, 4, 64, 24, __put_val); \ |
| _GST_PUT (__put_data, 5, 64, 16, __put_val); \ |
| _GST_PUT (__put_data, 6, 64, 8, __put_val); \ |
| _GST_PUT (__put_data, 7, 64, 0, __put_val); \ |
| } while (0) |
| |
| #define GST_WRITE_UINT64_LE(data,val) do { \ |
| gpointer __put_data = data; \ |
| guint64 __put_val = val; \ |
| _GST_PUT (__put_data, 0, 64, 0, __put_val); \ |
| _GST_PUT (__put_data, 1, 64, 8, __put_val); \ |
| _GST_PUT (__put_data, 2, 64, 16, __put_val); \ |
| _GST_PUT (__put_data, 3, 64, 24, __put_val); \ |
| _GST_PUT (__put_data, 4, 64, 32, __put_val); \ |
| _GST_PUT (__put_data, 5, 64, 40, __put_val); \ |
| _GST_PUT (__put_data, 6, 64, 48, __put_val); \ |
| _GST_PUT (__put_data, 7, 64, 56, __put_val); \ |
| } while (0) |
| #endif /* !GST_HAVE_UNALIGNED_ACCESS */ |
| |
| /** |
| * GST_WRITE_UINT32_BE: |
| * @data: memory location |
| * @val: value to store |
| * |
| * Store a 32 bit unsigned integer value in big endian format into the memory buffer. |
| */ |
| /** |
| * GST_WRITE_UINT32_LE: |
| * @data: memory location |
| * @val: value to store |
| * |
| * Store a 32 bit unsigned integer value in little endian format into the memory buffer. |
| */ |
| #if GST_HAVE_UNALIGNED_ACCESS |
| # if (G_BYTE_ORDER == G_BIG_ENDIAN) |
| # define GST_WRITE_UINT32_BE(data,val) _GST_FAST_WRITE(32,data,val) |
| # define GST_WRITE_UINT32_LE(data,val) _GST_FAST_WRITE_SWAP(32,data,val) |
| # else |
| # define GST_WRITE_UINT32_BE(data,val) _GST_FAST_WRITE_SWAP(32,data,val) |
| # define GST_WRITE_UINT32_LE(data,val) _GST_FAST_WRITE(32,data,val) |
| # endif |
| #else |
| #define GST_WRITE_UINT32_BE(data,val) do { \ |
| gpointer __put_data = data; \ |
| guint32 __put_val = val; \ |
| _GST_PUT (__put_data, 0, 32, 24, __put_val); \ |
| _GST_PUT (__put_data, 1, 32, 16, __put_val); \ |
| _GST_PUT (__put_data, 2, 32, 8, __put_val); \ |
| _GST_PUT (__put_data, 3, 32, 0, __put_val); \ |
| } while (0) |
| |
| #define GST_WRITE_UINT32_LE(data,val) do { \ |
| gpointer __put_data = data; \ |
| guint32 __put_val = val; \ |
| _GST_PUT (__put_data, 0, 32, 0, __put_val); \ |
| _GST_PUT (__put_data, 1, 32, 8, __put_val); \ |
| _GST_PUT (__put_data, 2, 32, 16, __put_val); \ |
| _GST_PUT (__put_data, 3, 32, 24, __put_val); \ |
| } while (0) |
| #endif /* !GST_HAVE_UNALIGNED_ACCESS */ |
| |
| /** |
| * GST_WRITE_UINT24_BE: |
| * @data: memory location |
| * @num: value to store |
| * |
| * Store a 24 bit unsigned integer value in big endian format into the memory buffer. |
| */ |
| #define GST_WRITE_UINT24_BE(data, num) do { \ |
| gpointer __put_data = data; \ |
| guint32 __put_val = num; \ |
| _GST_PUT (__put_data, 0, 32, 16, __put_val); \ |
| _GST_PUT (__put_data, 1, 32, 8, __put_val); \ |
| _GST_PUT (__put_data, 2, 32, 0, __put_val); \ |
| } while (0) |
| |
| /** |
| * GST_WRITE_UINT24_LE: |
| * @data: memory location |
| * @num: value to store |
| * |
| * Store a 24 bit unsigned integer value in little endian format into the memory buffer. |
| */ |
| #define GST_WRITE_UINT24_LE(data, num) do { \ |
| gpointer __put_data = data; \ |
| guint32 __put_val = num; \ |
| _GST_PUT (__put_data, 0, 32, 0, __put_val); \ |
| _GST_PUT (__put_data, 1, 32, 8, __put_val); \ |
| _GST_PUT (__put_data, 2, 32, 16, __put_val); \ |
| } while (0) |
| |
| /** |
| * GST_WRITE_UINT16_BE: |
| * @data: memory location |
| * @val: value to store |
| * |
| * Store a 16 bit unsigned integer value in big endian format into the memory buffer. |
| */ |
| /** |
| * GST_WRITE_UINT16_LE: |
| * @data: memory location |
| * @val: value to store |
| * |
| * Store a 16 bit unsigned integer value in little endian format into the memory buffer. |
| */ |
| #if GST_HAVE_UNALIGNED_ACCESS |
| # if (G_BYTE_ORDER == G_BIG_ENDIAN) |
| # define GST_WRITE_UINT16_BE(data,val) _GST_FAST_WRITE(16,data,val) |
| # define GST_WRITE_UINT16_LE(data,val) _GST_FAST_WRITE_SWAP(16,data,val) |
| # else |
| # define GST_WRITE_UINT16_BE(data,val) _GST_FAST_WRITE_SWAP(16,data,val) |
| # define GST_WRITE_UINT16_LE(data,val) _GST_FAST_WRITE(16,data,val) |
| # endif |
| #else |
| #define GST_WRITE_UINT16_BE(data,val) do { \ |
| gpointer __put_data = data; \ |
| guint16 __put_val = val; \ |
| _GST_PUT (__put_data, 0, 16, 8, __put_val); \ |
| _GST_PUT (__put_data, 1, 16, 0, __put_val); \ |
| } while (0) |
| |
| #define GST_WRITE_UINT16_LE(data,val) do { \ |
| gpointer __put_data = data; \ |
| guint16 __put_val = val; \ |
| _GST_PUT (__put_data, 0, 16, 0, __put_val); \ |
| _GST_PUT (__put_data, 1, 16, 8, __put_val); \ |
| } while (0) |
| #endif /* !GST_HAVE_UNALIGNED_ACCESS */ |
| |
| /** |
| * GST_WRITE_UINT8: |
| * @data: memory location |
| * @num: value to store |
| * |
| * Store an 8 bit unsigned integer value into the memory buffer. |
| */ |
| #define GST_WRITE_UINT8(data, num) do { \ |
| _GST_PUT (data, 0, 8, 0, num); \ |
| } while (0) |
| |
| /* Float endianness conversion macros */ |
| |
| /* FIXME: Remove this once we depend on a GLib version with this */ |
| #ifndef GFLOAT_FROM_LE |
| /** |
| * GFLOAT_SWAP_LE_BE: |
| * @in: input value |
| * |
| * Swap byte order of a 32-bit floating point value (float). |
| * |
| * Returns: @in byte-swapped. |
| */ |
| static inline 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; |
| } |
| |
| /** |
| * GDOUBLE_SWAP_LE_BE: |
| * @in: input value |
| * |
| * Swap byte order of a 64-bit floating point value (double). |
| * |
| * Returns: @in byte-swapped. |
| */ |
| static inline 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; |
| } |
| |
| /** |
| * GDOUBLE_TO_LE: |
| * @val: value |
| * |
| * Convert 64-bit floating point value (double) from native byte order into |
| * little endian byte order. |
| */ |
| /** |
| * GDOUBLE_TO_BE: |
| * @val: value |
| * |
| * Convert 64-bit floating point value (double) from native byte order into |
| * big endian byte order. |
| */ |
| /** |
| * GDOUBLE_FROM_LE: |
| * @val: value |
| * |
| * Convert 64-bit floating point value (double) from little endian byte order |
| * into native byte order. |
| */ |
| /** |
| * GDOUBLE_FROM_BE: |
| * @val: value |
| * |
| * Convert 64-bit floating point value (double) from big endian byte order |
| * into native byte order. |
| */ |
| |
| /** |
| * GFLOAT_TO_LE: |
| * @val: value |
| * |
| * Convert 32-bit floating point value (float) from native byte order into |
| * little endian byte order. |
| */ |
| /** |
| * GFLOAT_TO_BE: |
| * @val: value |
| * |
| * Convert 32-bit floating point value (float) from native byte order into |
| * big endian byte order. |
| */ |
| /** |
| * GFLOAT_FROM_LE: |
| * @val: value |
| * |
| * Convert 32-bit floating point value (float) from little endian byte order |
| * into native byte order. |
| */ |
| /** |
| * GFLOAT_FROM_BE: |
| * @val: value |
| * |
| * Convert 32-bit floating point value (float) from big endian byte order |
| * into native byte order. |
| */ |
| |
| #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)) |
| |
| #endif /* !defined(GFLOAT_FROM_LE) */ |
| |
| /** |
| * GST_READ_FLOAT_LE: |
| * @data: memory location |
| * |
| * Read a 32 bit float value in little endian format from the memory buffer. |
| * |
| * Returns: The floating point value read from @data |
| */ |
| static inline gfloat |
| GST_READ_FLOAT_LE(const guint8 *data) |
| { |
| union |
| { |
| guint32 i; |
| gfloat f; |
| } u; |
| |
| u.i = GST_READ_UINT32_LE (data); |
| return u.f; |
| } |
| |
| /** |
| * GST_READ_FLOAT_BE: |
| * @data: memory location |
| * |
| * Read a 32 bit float value in big endian format from the memory buffer. |
| * |
| * Returns: The floating point value read from @data |
| */ |
| static inline gfloat |
| GST_READ_FLOAT_BE(const guint8 *data) |
| { |
| union |
| { |
| guint32 i; |
| gfloat f; |
| } u; |
| |
| u.i = GST_READ_UINT32_BE (data); |
| return u.f; |
| } |
| |
| /** |
| * GST_READ_DOUBLE_LE: |
| * @data: memory location |
| * |
| * Read a 64 bit double value in little endian format from the memory buffer. |
| * |
| * Returns: The double-precision floating point value read from @data |
| */ |
| static inline gdouble |
| GST_READ_DOUBLE_LE(const guint8 *data) |
| { |
| union |
| { |
| guint64 i; |
| gdouble d; |
| } u; |
| |
| u.i = GST_READ_UINT64_LE (data); |
| return u.d; |
| } |
| |
| /** |
| * GST_READ_DOUBLE_BE: |
| * @data: memory location |
| * |
| * Read a 64 bit double value in big endian format from the memory buffer. |
| * |
| * Returns: The double-precision floating point value read from @data |
| */ |
| static inline gdouble |
| GST_READ_DOUBLE_BE(const guint8 *data) |
| { |
| union |
| { |
| guint64 i; |
| gdouble d; |
| } u; |
| |
| u.i = GST_READ_UINT64_BE (data); |
| return u.d; |
| } |
| |
| /** |
| * GST_WRITE_FLOAT_LE: |
| * @data: memory location |
| * @num: value to store |
| * |
| * Store a 32 bit float value in little endian format into the memory buffer. |
| */ |
| static inline void |
| GST_WRITE_FLOAT_LE(guint8 *data, gfloat num) |
| { |
| union |
| { |
| guint32 i; |
| gfloat f; |
| } u; |
| |
| u.f = num; |
| GST_WRITE_UINT32_LE (data, u.i); |
| } |
| |
| /** |
| * GST_WRITE_FLOAT_BE: |
| * @data: memory location |
| * @num: value to store |
| * |
| * Store a 32 bit float value in big endian format into the memory buffer. |
| */ |
| static inline void |
| GST_WRITE_FLOAT_BE(guint8 *data, gfloat num) |
| { |
| union |
| { |
| guint32 i; |
| gfloat f; |
| } u; |
| |
| u.f = num; |
| GST_WRITE_UINT32_BE (data, u.i); |
| } |
| |
| /** |
| * GST_WRITE_DOUBLE_LE: |
| * @data: memory location |
| * @num: value to store |
| * |
| * Store a 64 bit double value in little endian format into the memory buffer. |
| */ |
| static inline void |
| GST_WRITE_DOUBLE_LE(guint8 *data, gdouble num) |
| { |
| union |
| { |
| guint64 i; |
| gdouble d; |
| } u; |
| |
| u.d = num; |
| GST_WRITE_UINT64_LE (data, u.i); |
| } |
| |
| /** |
| * GST_WRITE_DOUBLE_BE: |
| * @data: memory location |
| * @num: value to store |
| * |
| * Store a 64 bit double value in big endian format into the memory buffer. |
| */ |
| static inline void |
| GST_WRITE_DOUBLE_BE(guint8 *data, gdouble num) |
| { |
| union |
| { |
| guint64 i; |
| gdouble d; |
| } u; |
| |
| u.d = num; |
| GST_WRITE_UINT64_BE (data, u.i); |
| } |
| |
| /* Miscellaneous utility macros */ |
| |
| /** |
| * GST_ROUND_UP_2: |
| * @num: integer value to round up |
| * |
| * Rounds an integer value up to the next multiple of 2. |
| */ |
| #define GST_ROUND_UP_2(num) (((num)+1)&~1) |
| /** |
| * GST_ROUND_UP_4: |
| * @num: integer value to round up |
| * |
| * Rounds an integer value up to the next multiple of 4. |
| */ |
| #define GST_ROUND_UP_4(num) (((num)+3)&~3) |
| /** |
| * GST_ROUND_UP_8: |
| * @num: integer value to round up |
| * |
| * Rounds an integer value up to the next multiple of 8. |
| */ |
| #define GST_ROUND_UP_8(num) (((num)+7)&~7) |
| /** |
| * GST_ROUND_UP_16: |
| * @num: integer value to round up |
| * |
| * Rounds an integer value up to the next multiple of 16. |
| */ |
| #define GST_ROUND_UP_16(num) (((num)+15)&~15) |
| /** |
| * GST_ROUND_UP_32: |
| * @num: integer value to round up |
| * |
| * Rounds an integer value up to the next multiple of 32. |
| */ |
| #define GST_ROUND_UP_32(num) (((num)+31)&~31) |
| /** |
| * GST_ROUND_UP_64: |
| * @num: integer value to round up |
| * |
| * Rounds an integer value up to the next multiple of 64. |
| */ |
| #define GST_ROUND_UP_64(num) (((num)+63)&~63) |
| /** |
| * GST_ROUND_UP_128: |
| * @num: integer value to round up |
| * |
| * Rounds an integer value up to the next multiple of 128. |
| * Since: 1.4 |
| */ |
| #define GST_ROUND_UP_128(num) (((num)+127)&~127) |
| /** |
| * GST_ROUND_UP_N: |
| * @num: integrer value to round up |
| * @align: a power of two to round up to |
| * |
| * Rounds an integer value up to the next multiple of @align. @align MUST be a |
| * power of two. |
| */ |
| #define GST_ROUND_UP_N(num,align) ((((num) + ((align) - 1)) & ~((align) - 1))) |
| |
| |
| /** |
| * GST_ROUND_DOWN_2: |
| * @num: integer value to round down |
| * |
| * Rounds an integer value down to the next multiple of 2. |
| */ |
| #define GST_ROUND_DOWN_2(num) ((num)&(~1)) |
| /** |
| * GST_ROUND_DOWN_4: |
| * @num: integer value to round down |
| * |
| * Rounds an integer value down to the next multiple of 4. |
| */ |
| #define GST_ROUND_DOWN_4(num) ((num)&(~3)) |
| /** |
| * GST_ROUND_DOWN_8: |
| * @num: integer value to round down |
| * |
| * Rounds an integer value down to the next multiple of 8. |
| */ |
| #define GST_ROUND_DOWN_8(num) ((num)&(~7)) |
| /** |
| * GST_ROUND_DOWN_16: |
| * @num: integer value to round down |
| * |
| * Rounds an integer value down to the next multiple of 16. |
| */ |
| #define GST_ROUND_DOWN_16(num) ((num)&(~15)) |
| /** |
| * GST_ROUND_DOWN_32: |
| * @num: integer value to round down |
| * |
| * Rounds an integer value down to the next multiple of 32. |
| */ |
| #define GST_ROUND_DOWN_32(num) ((num)&(~31)) |
| /** |
| * GST_ROUND_DOWN_64: |
| * @num: integer value to round down |
| * |
| * Rounds an integer value down to the next multiple of 64. |
| */ |
| #define GST_ROUND_DOWN_64(num) ((num)&(~63)) |
| /** |
| * GST_ROUND_DOWN_128: |
| * @num: integer value to round down |
| * |
| * Rounds an integer value down to the next multiple of 128. |
| * Since: 1.4 |
| */ |
| #define GST_ROUND_DOWN_128(num) ((num)&(~127)) |
| /** |
| * GST_ROUND_DOWN_N: |
| * @num: integrer value to round down |
| * @align: a power of two to round down to |
| * |
| * Rounds an integer value down to the next multiple of @align. @align MUST be a |
| * power of two. |
| */ |
| #define GST_ROUND_DOWN_N(num,align) (((num) & ~((align) - 1))) |
| |
| |
| GST_API |
| void gst_object_default_error (GstObject * source, |
| const GError * error, |
| const gchar * debug); |
| |
| /* element functions */ |
| |
| GST_API |
| void gst_element_create_all_pads (GstElement *element); |
| |
| GST_API |
| GstPad* gst_element_get_compatible_pad (GstElement *element, GstPad *pad, |
| GstCaps *caps); |
| GST_API |
| GstPadTemplate* gst_element_get_compatible_pad_template (GstElement *element, GstPadTemplate *compattempl); |
| |
| GST_API |
| const gchar* gst_element_state_get_name (GstState state); |
| |
| GST_API |
| const gchar * gst_element_state_change_return_get_name (GstStateChangeReturn state_ret); |
| |
| GST_API |
| const gchar * gst_state_change_get_name (GstStateChange transition); |
| |
| GST_API |
| gboolean gst_element_link (GstElement *src, GstElement *dest); |
| |
| GST_API |
| gboolean gst_element_link_many (GstElement *element_1, |
| GstElement *element_2, ...) G_GNUC_NULL_TERMINATED; |
| GST_API |
| gboolean gst_element_link_filtered (GstElement * src, |
| GstElement * dest, |
| GstCaps *filter); |
| GST_API |
| void gst_element_unlink (GstElement *src, GstElement *dest); |
| |
| GST_API |
| void gst_element_unlink_many (GstElement *element_1, |
| GstElement *element_2, ...) G_GNUC_NULL_TERMINATED; |
| GST_API |
| gboolean gst_element_link_pads (GstElement *src, const gchar *srcpadname, |
| GstElement *dest, const gchar *destpadname); |
| GST_API |
| gboolean gst_element_link_pads_full (GstElement *src, const gchar *srcpadname, |
| GstElement *dest, const gchar *destpadname, |
| GstPadLinkCheck flags); |
| GST_API |
| void gst_element_unlink_pads (GstElement *src, const gchar *srcpadname, |
| GstElement *dest, const gchar *destpadname); |
| GST_API |
| gboolean gst_element_link_pads_filtered (GstElement * src, const gchar * srcpadname, |
| GstElement * dest, const gchar * destpadname, |
| GstCaps *filter); |
| GST_API |
| gboolean gst_element_seek_simple (GstElement *element, |
| GstFormat format, |
| GstSeekFlags seek_flags, |
| gint64 seek_pos); |
| |
| /* util elementfactory functions */ |
| |
| GST_API |
| gboolean gst_element_factory_can_sink_all_caps (GstElementFactory *factory, const GstCaps *caps); |
| |
| GST_API |
| gboolean gst_element_factory_can_src_all_caps (GstElementFactory *factory, const GstCaps *caps); |
| |
| GST_API |
| gboolean gst_element_factory_can_sink_any_caps (GstElementFactory *factory, const GstCaps *caps); |
| |
| GST_API |
| gboolean gst_element_factory_can_src_any_caps (GstElementFactory *factory, const GstCaps *caps); |
| |
| /* util query functions */ |
| |
| GST_API |
| gboolean gst_element_query_position (GstElement *element, GstFormat format, gint64 *cur); |
| |
| GST_API |
| gboolean gst_element_query_duration (GstElement *element, GstFormat format, gint64 *duration); |
| |
| GST_API |
| gboolean gst_element_query_convert (GstElement *element, GstFormat src_format, gint64 src_val, |
| GstFormat dest_format, gint64 *dest_val); |
| |
| /* pad functions */ |
| |
| GST_API |
| void gst_pad_use_fixed_caps (GstPad *pad); |
| |
| GST_API |
| GstElement* gst_pad_get_parent_element (GstPad *pad); |
| |
| /* util query functions */ |
| |
| GST_API |
| gboolean gst_pad_proxy_query_accept_caps (GstPad *pad, GstQuery *query); |
| |
| GST_API |
| gboolean gst_pad_proxy_query_caps (GstPad *pad, GstQuery *query); |
| |
| GST_API |
| gboolean gst_pad_query_position (GstPad *pad, GstFormat format, gint64 *cur); |
| |
| GST_API |
| gboolean gst_pad_query_duration (GstPad *pad, GstFormat format, gint64 *duration); |
| |
| GST_API |
| gboolean gst_pad_query_convert (GstPad *pad, GstFormat src_format, gint64 src_val, |
| GstFormat dest_format, gint64 *dest_val); |
| GST_API |
| GstCaps * gst_pad_query_caps (GstPad *pad, GstCaps *filter); |
| |
| GST_API |
| gboolean gst_pad_query_accept_caps (GstPad *pad, GstCaps *caps); |
| |
| GST_API |
| gboolean gst_pad_link_maybe_ghosting (GstPad *src, |
| GstPad *sink); |
| GST_API |
| gboolean gst_pad_link_maybe_ghosting_full (GstPad *src, |
| GstPad *sink, |
| GstPadLinkCheck flags); |
| GST_API |
| gboolean gst_pad_peer_query_position (GstPad *pad, GstFormat format, gint64 *cur); |
| |
| GST_API |
| gboolean gst_pad_peer_query_duration (GstPad *pad, GstFormat format, gint64 *duration); |
| |
| GST_API |
| gboolean gst_pad_peer_query_convert (GstPad *pad, GstFormat src_format, gint64 src_val, |
| GstFormat dest_format, gint64 *dest_val); |
| GST_API |
| GstCaps * gst_pad_peer_query_caps (GstPad * pad, GstCaps *filter); |
| |
| GST_API |
| gboolean gst_pad_peer_query_accept_caps (GstPad * pad, GstCaps *caps); |
| |
| GST_API |
| gchar * gst_pad_create_stream_id (GstPad * pad, GstElement * parent, const gchar *stream_id) G_GNUC_MALLOC; |
| |
| GST_API |
| gchar * gst_pad_create_stream_id_printf (GstPad * pad, GstElement * parent, const gchar *stream_id, ...) G_GNUC_PRINTF (3, 4) G_GNUC_MALLOC; |
| |
| GST_API |
| gchar * gst_pad_create_stream_id_printf_valist (GstPad * pad, GstElement * parent, const gchar *stream_id, va_list var_args) G_GNUC_PRINTF (3, 0) G_GNUC_MALLOC; |
| |
| GST_API |
| gchar * gst_pad_get_stream_id (GstPad * pad); |
| |
| GST_API |
| GstStream * gst_pad_get_stream (GstPad * pad); |
| |
| /* bin functions */ |
| |
| GST_API |
| void gst_bin_add_many (GstBin *bin, GstElement *element_1, ...) G_GNUC_NULL_TERMINATED; |
| |
| GST_API |
| void gst_bin_remove_many (GstBin *bin, GstElement *element_1, ...) G_GNUC_NULL_TERMINATED; |
| |
| GST_API |
| GstPad * gst_bin_find_unlinked_pad (GstBin *bin, GstPadDirection direction); |
| |
| GST_API |
| gboolean gst_bin_sync_children_states (GstBin *bin); |
| |
| /* parse utility functions */ |
| |
| GST_API |
| GstElement * gst_parse_bin_from_description (const gchar * bin_description, |
| gboolean ghost_unlinked_pads, |
| GError ** err); |
| GST_API |
| GstElement * gst_parse_bin_from_description_full (const gchar * bin_description, |
| gboolean ghost_unlinked_pads, |
| GstParseContext * context, |
| GstParseFlags flags, |
| GError ** err); |
| GST_API |
| GstClockTime gst_util_get_timestamp (void); |
| |
| /** |
| * GstSearchMode: |
| * @GST_SEARCH_MODE_EXACT : Only search for exact matches. |
| * @GST_SEARCH_MODE_BEFORE: Search for an exact match or the element just before. |
| * @GST_SEARCH_MODE_AFTER : Search for an exact match or the element just after. |
| * |
| * The different search modes. |
| */ |
| typedef enum { |
| GST_SEARCH_MODE_EXACT = 0, |
| GST_SEARCH_MODE_BEFORE, |
| GST_SEARCH_MODE_AFTER |
| } GstSearchMode; |
| |
| GST_API |
| gpointer gst_util_array_binary_search (gpointer array, guint num_elements, |
| gsize element_size, GCompareDataFunc search_func, |
| GstSearchMode mode, gconstpointer search_data, |
| gpointer user_data); |
| |
| /* fraction operations */ |
| |
| GST_API |
| gint gst_util_greatest_common_divisor (gint a, gint b); |
| |
| GST_API |
| gint64 gst_util_greatest_common_divisor_int64 (gint64 a, gint64 b); |
| |
| GST_API |
| void gst_util_fraction_to_double (gint src_n, gint src_d, gdouble *dest); |
| |
| GST_API |
| void gst_util_double_to_fraction (gdouble src, gint *dest_n, gint *dest_d); |
| |
| GST_API |
| gboolean gst_util_fraction_multiply (gint a_n, gint a_d, gint b_n, gint b_d, |
| gint *res_n, gint *res_d); |
| GST_API |
| gboolean gst_util_fraction_add (gint a_n, gint a_d, gint b_n, gint b_d, |
| gint *res_n, gint *res_d); |
| GST_API |
| gint gst_util_fraction_compare (gint a_n, gint a_d, gint b_n, gint b_d); |
| |
| GST_API |
| gboolean gst_calculate_linear_regression (const GstClockTime * xy, |
| GstClockTime * temp, guint n, |
| GstClockTime * m_num, GstClockTime * m_denom, |
| GstClockTime * b, GstClockTime * xbase, |
| gdouble * r_squared); |
| |
| |
| G_END_DECLS |
| |
| #endif /* __GST_UTILS_H__ */ |
