API changes, most recent first:
+2012-xx-xx - xxxxxxx - lavu 52.2.0 - audioconvert.h
+ Rename audioconvert.h to channel_layout.h. audioconvert.h is now deprecated.
+
2012-xx-xx - xxxxxxx - lavu 52.1.0 - intmath.h
Add av_ctz() for trailing zero bit count
base64.h \
blowfish.h \
bswap.h \
+ channel_layout.h \
common.h \
cpu.h \
crc.h \
OBJS = adler32.o \
aes.o \
audio_fifo.o \
- audioconvert.o \
avstring.o \
base64.o \
blowfish.o \
+ channel_layout.o \
cpu.o \
crc.o \
des.o \
+++ /dev/null
-/*
- * Copyright (c) 2006 Michael Niedermayer <michaelni@gmx.at>
- *
- * This file is part of Libav.
- *
- * Libav is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2.1 of the License, or (at your option) any later version.
- *
- * Libav 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
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with Libav; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- */
-
-/**
- * @file
- * audio conversion routines
- */
-
-#include "avstring.h"
-#include "avutil.h"
-#include "audioconvert.h"
-#include "common.h"
-
-static const char * const channel_names[] = {
- [0] = "FL", /* front left */
- [1] = "FR", /* front right */
- [2] = "FC", /* front center */
- [3] = "LFE", /* low frequency */
- [4] = "BL", /* back left */
- [5] = "BR", /* back right */
- [6] = "FLC", /* front left-of-center */
- [7] = "FRC", /* front right-of-center */
- [8] = "BC", /* back-center */
- [9] = "SL", /* side left */
- [10] = "SR", /* side right */
- [11] = "TC", /* top center */
- [12] = "TFL", /* top front left */
- [13] = "TFC", /* top front center */
- [14] = "TFR", /* top front right */
- [15] = "TBL", /* top back left */
- [16] = "TBC", /* top back center */
- [17] = "TBR", /* top back right */
- [29] = "DL", /* downmix left */
- [30] = "DR", /* downmix right */
- [31] = "WL", /* wide left */
- [32] = "WR", /* wide right */
- [33] = "SDL", /* surround direct left */
- [34] = "SDR", /* surround direct right */
- [35] = "LFE2", /* low frequency 2 */
-};
-
-static const char *get_channel_name(int channel_id)
-{
- if (channel_id < 0 || channel_id >= FF_ARRAY_ELEMS(channel_names))
- return NULL;
- return channel_names[channel_id];
-}
-
-static const struct {
- const char *name;
- int nb_channels;
- uint64_t layout;
-} channel_layout_map[] = {
- { "mono", 1, AV_CH_LAYOUT_MONO },
- { "stereo", 2, AV_CH_LAYOUT_STEREO },
- { "stereo", 2, AV_CH_LAYOUT_STEREO_DOWNMIX },
- { "2.1", 3, AV_CH_LAYOUT_2POINT1 },
- { "3.0", 3, AV_CH_LAYOUT_SURROUND },
- { "3.0(back)", 3, AV_CH_LAYOUT_2_1 },
- { "3.1", 4, AV_CH_LAYOUT_3POINT1 },
- { "4.0", 4, AV_CH_LAYOUT_4POINT0 },
- { "quad", 4, AV_CH_LAYOUT_QUAD },
- { "quad(side)", 4, AV_CH_LAYOUT_2_2 },
- { "4.1", 5, AV_CH_LAYOUT_4POINT1 },
- { "5.0", 5, AV_CH_LAYOUT_5POINT0 },
- { "5.0", 5, AV_CH_LAYOUT_5POINT0_BACK },
- { "5.1", 6, AV_CH_LAYOUT_5POINT1 },
- { "5.1", 6, AV_CH_LAYOUT_5POINT1_BACK },
- { "6.0", 6, AV_CH_LAYOUT_6POINT0 },
- { "6.0(front)", 6, AV_CH_LAYOUT_6POINT0_FRONT },
- { "hexagonal", 6, AV_CH_LAYOUT_HEXAGONAL },
- { "6.1", 7, AV_CH_LAYOUT_6POINT1 },
- { "6.1", 7, AV_CH_LAYOUT_6POINT1_BACK },
- { "6.1(front)", 7, AV_CH_LAYOUT_6POINT1_FRONT },
- { "7.0", 7, AV_CH_LAYOUT_7POINT0 },
- { "7.0(front)", 7, AV_CH_LAYOUT_7POINT0_FRONT },
- { "7.1", 8, AV_CH_LAYOUT_7POINT1 },
- { "7.1(wide)", 8, AV_CH_LAYOUT_7POINT1_WIDE },
- { "7.1(wide)", 8, AV_CH_LAYOUT_7POINT1_WIDE_BACK },
- { "octagonal", 8, AV_CH_LAYOUT_OCTAGONAL },
- { "downmix", 2, AV_CH_LAYOUT_STEREO_DOWNMIX, },
- { 0 }
-};
-
-static uint64_t get_channel_layout_single(const char *name, int name_len)
-{
- int i;
- char *end;
- int64_t layout;
-
- for (i = 0; i < FF_ARRAY_ELEMS(channel_layout_map) - 1; i++) {
- if (strlen(channel_layout_map[i].name) == name_len &&
- !memcmp(channel_layout_map[i].name, name, name_len))
- return channel_layout_map[i].layout;
- }
- for (i = 0; i < FF_ARRAY_ELEMS(channel_names); i++)
- if (channel_names[i] &&
- strlen(channel_names[i]) == name_len &&
- !memcmp(channel_names[i], name, name_len))
- return (int64_t)1 << i;
- i = strtol(name, &end, 10);
- if (end - name == name_len ||
- (end + 1 - name == name_len && *end == 'c'))
- return av_get_default_channel_layout(i);
- layout = strtoll(name, &end, 0);
- if (end - name == name_len)
- return FFMAX(layout, 0);
- return 0;
-}
-
-uint64_t av_get_channel_layout(const char *name)
-{
- const char *n, *e;
- const char *name_end = name + strlen(name);
- int64_t layout = 0, layout_single;
-
- for (n = name; n < name_end; n = e + 1) {
- for (e = n; e < name_end && *e != '+' && *e != '|'; e++);
- layout_single = get_channel_layout_single(n, e - n);
- if (!layout_single)
- return 0;
- layout |= layout_single;
- }
- return layout;
-}
-
-void av_get_channel_layout_string(char *buf, int buf_size,
- int nb_channels, uint64_t channel_layout)
-{
- int i;
-
- if (nb_channels <= 0)
- nb_channels = av_get_channel_layout_nb_channels(channel_layout);
-
- for (i = 0; channel_layout_map[i].name; i++)
- if (nb_channels == channel_layout_map[i].nb_channels &&
- channel_layout == channel_layout_map[i].layout) {
- av_strlcpy(buf, channel_layout_map[i].name, buf_size);
- return;
- }
-
- snprintf(buf, buf_size, "%d channels", nb_channels);
- if (channel_layout) {
- int i, ch;
- av_strlcat(buf, " (", buf_size);
- for (i = 0, ch = 0; i < 64; i++) {
- if ((channel_layout & (UINT64_C(1) << i))) {
- const char *name = get_channel_name(i);
- if (name) {
- if (ch > 0)
- av_strlcat(buf, "|", buf_size);
- av_strlcat(buf, name, buf_size);
- }
- ch++;
- }
- }
- av_strlcat(buf, ")", buf_size);
- }
-}
-
-int av_get_channel_layout_nb_channels(uint64_t channel_layout)
-{
- return av_popcount64(channel_layout);
-}
-
-uint64_t av_get_default_channel_layout(int nb_channels)
-{
- switch(nb_channels) {
- case 1: return AV_CH_LAYOUT_MONO;
- case 2: return AV_CH_LAYOUT_STEREO;
- case 3: return AV_CH_LAYOUT_SURROUND;
- case 4: return AV_CH_LAYOUT_QUAD;
- case 5: return AV_CH_LAYOUT_5POINT0;
- case 6: return AV_CH_LAYOUT_5POINT1;
- case 7: return AV_CH_LAYOUT_6POINT1;
- case 8: return AV_CH_LAYOUT_7POINT1;
- default: return 0;
- }
-}
-
-int av_get_channel_layout_channel_index(uint64_t channel_layout,
- uint64_t channel)
-{
- if (!(channel_layout & channel) ||
- av_get_channel_layout_nb_channels(channel) != 1)
- return AVERROR(EINVAL);
- channel_layout &= channel - 1;
- return av_get_channel_layout_nb_channels(channel_layout);
-}
-
-const char *av_get_channel_name(uint64_t channel)
-{
- int i;
- if (av_get_channel_layout_nb_channels(channel) != 1)
- return NULL;
- for (i = 0; i < 64; i++)
- if ((1ULL<<i) & channel)
- return get_channel_name(i);
- return NULL;
-}
-
-uint64_t av_channel_layout_extract_channel(uint64_t channel_layout, int index)
-{
- int i;
-
- if (av_get_channel_layout_nb_channels(channel_layout) <= index)
- return 0;
-
- for (i = 0; i < 64; i++) {
- if ((1ULL << i) & channel_layout && !index--)
- return 1ULL << i;
- }
- return 0;
-}
-/*
- * Copyright (c) 2006 Michael Niedermayer <michaelni@gmx.at>
- * Copyright (c) 2008 Peter Ross
- *
- * This file is part of Libav.
- *
- * Libav is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2.1 of the License, or (at your option) any later version.
- *
- * Libav 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
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with Libav; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- */
-#ifndef AVUTIL_AUDIOCONVERT_H
-#define AVUTIL_AUDIOCONVERT_H
+#include "version.h"
-#include <stdint.h>
-
-/**
- * @file
- * audio conversion routines
- */
-
-/**
- * @addtogroup lavu_audio
- * @{
- */
-
-/**
- * @defgroup channel_masks Audio channel masks
- * @{
- */
-#define AV_CH_FRONT_LEFT 0x00000001
-#define AV_CH_FRONT_RIGHT 0x00000002
-#define AV_CH_FRONT_CENTER 0x00000004
-#define AV_CH_LOW_FREQUENCY 0x00000008
-#define AV_CH_BACK_LEFT 0x00000010
-#define AV_CH_BACK_RIGHT 0x00000020
-#define AV_CH_FRONT_LEFT_OF_CENTER 0x00000040
-#define AV_CH_FRONT_RIGHT_OF_CENTER 0x00000080
-#define AV_CH_BACK_CENTER 0x00000100
-#define AV_CH_SIDE_LEFT 0x00000200
-#define AV_CH_SIDE_RIGHT 0x00000400
-#define AV_CH_TOP_CENTER 0x00000800
-#define AV_CH_TOP_FRONT_LEFT 0x00001000
-#define AV_CH_TOP_FRONT_CENTER 0x00002000
-#define AV_CH_TOP_FRONT_RIGHT 0x00004000
-#define AV_CH_TOP_BACK_LEFT 0x00008000
-#define AV_CH_TOP_BACK_CENTER 0x00010000
-#define AV_CH_TOP_BACK_RIGHT 0x00020000
-#define AV_CH_STEREO_LEFT 0x20000000 ///< Stereo downmix.
-#define AV_CH_STEREO_RIGHT 0x40000000 ///< See AV_CH_STEREO_LEFT.
-#define AV_CH_WIDE_LEFT 0x0000000080000000ULL
-#define AV_CH_WIDE_RIGHT 0x0000000100000000ULL
-#define AV_CH_SURROUND_DIRECT_LEFT 0x0000000200000000ULL
-#define AV_CH_SURROUND_DIRECT_RIGHT 0x0000000400000000ULL
-#define AV_CH_LOW_FREQUENCY_2 0x0000000800000000ULL
-
-/** Channel mask value used for AVCodecContext.request_channel_layout
- to indicate that the user requests the channel order of the decoder output
- to be the native codec channel order. */
-#define AV_CH_LAYOUT_NATIVE 0x8000000000000000ULL
-
-/**
- * @}
- * @defgroup channel_mask_c Audio channel convenience macros
- * @{
- * */
-#define AV_CH_LAYOUT_MONO (AV_CH_FRONT_CENTER)
-#define AV_CH_LAYOUT_STEREO (AV_CH_FRONT_LEFT|AV_CH_FRONT_RIGHT)
-#define AV_CH_LAYOUT_2POINT1 (AV_CH_LAYOUT_STEREO|AV_CH_LOW_FREQUENCY)
-#define AV_CH_LAYOUT_2_1 (AV_CH_LAYOUT_STEREO|AV_CH_BACK_CENTER)
-#define AV_CH_LAYOUT_SURROUND (AV_CH_LAYOUT_STEREO|AV_CH_FRONT_CENTER)
-#define AV_CH_LAYOUT_3POINT1 (AV_CH_LAYOUT_SURROUND|AV_CH_LOW_FREQUENCY)
-#define AV_CH_LAYOUT_4POINT0 (AV_CH_LAYOUT_SURROUND|AV_CH_BACK_CENTER)
-#define AV_CH_LAYOUT_4POINT1 (AV_CH_LAYOUT_4POINT0|AV_CH_LOW_FREQUENCY)
-#define AV_CH_LAYOUT_2_2 (AV_CH_LAYOUT_STEREO|AV_CH_SIDE_LEFT|AV_CH_SIDE_RIGHT)
-#define AV_CH_LAYOUT_QUAD (AV_CH_LAYOUT_STEREO|AV_CH_BACK_LEFT|AV_CH_BACK_RIGHT)
-#define AV_CH_LAYOUT_5POINT0 (AV_CH_LAYOUT_SURROUND|AV_CH_SIDE_LEFT|AV_CH_SIDE_RIGHT)
-#define AV_CH_LAYOUT_5POINT1 (AV_CH_LAYOUT_5POINT0|AV_CH_LOW_FREQUENCY)
-#define AV_CH_LAYOUT_5POINT0_BACK (AV_CH_LAYOUT_SURROUND|AV_CH_BACK_LEFT|AV_CH_BACK_RIGHT)
-#define AV_CH_LAYOUT_5POINT1_BACK (AV_CH_LAYOUT_5POINT0_BACK|AV_CH_LOW_FREQUENCY)
-#define AV_CH_LAYOUT_6POINT0 (AV_CH_LAYOUT_5POINT0|AV_CH_BACK_CENTER)
-#define AV_CH_LAYOUT_6POINT0_FRONT (AV_CH_LAYOUT_2_2|AV_CH_FRONT_LEFT_OF_CENTER|AV_CH_FRONT_RIGHT_OF_CENTER)
-#define AV_CH_LAYOUT_HEXAGONAL (AV_CH_LAYOUT_5POINT0_BACK|AV_CH_BACK_CENTER)
-#define AV_CH_LAYOUT_6POINT1 (AV_CH_LAYOUT_5POINT1|AV_CH_BACK_CENTER)
-#define AV_CH_LAYOUT_6POINT1_BACK (AV_CH_LAYOUT_5POINT1_BACK|AV_CH_BACK_CENTER)
-#define AV_CH_LAYOUT_6POINT1_FRONT (AV_CH_LAYOUT_6POINT0_FRONT|AV_CH_LOW_FREQUENCY)
-#define AV_CH_LAYOUT_7POINT0 (AV_CH_LAYOUT_5POINT0|AV_CH_BACK_LEFT|AV_CH_BACK_RIGHT)
-#define AV_CH_LAYOUT_7POINT0_FRONT (AV_CH_LAYOUT_5POINT0|AV_CH_FRONT_LEFT_OF_CENTER|AV_CH_FRONT_RIGHT_OF_CENTER)
-#define AV_CH_LAYOUT_7POINT1 (AV_CH_LAYOUT_5POINT1|AV_CH_BACK_LEFT|AV_CH_BACK_RIGHT)
-#define AV_CH_LAYOUT_7POINT1_WIDE (AV_CH_LAYOUT_5POINT1|AV_CH_FRONT_LEFT_OF_CENTER|AV_CH_FRONT_RIGHT_OF_CENTER)
-#define AV_CH_LAYOUT_7POINT1_WIDE_BACK (AV_CH_LAYOUT_5POINT1_BACK|AV_CH_FRONT_LEFT_OF_CENTER|AV_CH_FRONT_RIGHT_OF_CENTER)
-#define AV_CH_LAYOUT_OCTAGONAL (AV_CH_LAYOUT_5POINT0|AV_CH_BACK_LEFT|AV_CH_BACK_CENTER|AV_CH_BACK_RIGHT)
-#define AV_CH_LAYOUT_STEREO_DOWNMIX (AV_CH_STEREO_LEFT|AV_CH_STEREO_RIGHT)
-
-enum AVMatrixEncoding {
- AV_MATRIX_ENCODING_NONE,
- AV_MATRIX_ENCODING_DOLBY,
- AV_MATRIX_ENCODING_DPLII,
- AV_MATRIX_ENCODING_NB
-};
-
-/**
- * @}
- */
-
-/**
- * Return a channel layout id that matches name, or 0 if no match is found.
- *
- * name can be one or several of the following notations,
- * separated by '+' or '|':
- * - the name of an usual channel layout (mono, stereo, 4.0, quad, 5.0,
- * 5.0(side), 5.1, 5.1(side), 7.1, 7.1(wide), downmix);
- * - the name of a single channel (FL, FR, FC, LFE, BL, BR, FLC, FRC, BC,
- * SL, SR, TC, TFL, TFC, TFR, TBL, TBC, TBR, DL, DR);
- * - a number of channels, in decimal, optionally followed by 'c', yielding
- * the default channel layout for that number of channels (@see
- * av_get_default_channel_layout);
- * - a channel layout mask, in hexadecimal starting with "0x" (see the
- * AV_CH_* macros).
- *
- * Example: "stereo+FC" = "2+FC" = "2c+1c" = "0x7"
- */
-uint64_t av_get_channel_layout(const char *name);
-
-/**
- * Return a description of a channel layout.
- * If nb_channels is <= 0, it is guessed from the channel_layout.
- *
- * @param buf put here the string containing the channel layout
- * @param buf_size size in bytes of the buffer
- */
-void av_get_channel_layout_string(char *buf, int buf_size, int nb_channels, uint64_t channel_layout);
-
-/**
- * Return the number of channels in the channel layout.
- */
-int av_get_channel_layout_nb_channels(uint64_t channel_layout);
-
-/**
- * Return default channel layout for a given number of channels.
- */
-uint64_t av_get_default_channel_layout(int nb_channels);
-
-/**
- * Get the index of a channel in channel_layout.
- *
- * @param channel a channel layout describing exactly one channel which must be
- * present in channel_layout.
- *
- * @return index of channel in channel_layout on success, a negative AVERROR
- * on error.
- */
-int av_get_channel_layout_channel_index(uint64_t channel_layout,
- uint64_t channel);
-
-/**
- * Get the channel with the given index in channel_layout.
- */
-uint64_t av_channel_layout_extract_channel(uint64_t channel_layout, int index);
-
-/**
- * Get the name of a given channel.
- *
- * @return channel name on success, NULL on error.
- */
-const char *av_get_channel_name(uint64_t channel);
-
-/**
- * @}
- */
-
-#endif /* AVUTIL_AUDIOCONVERT_H */
+#if FF_API_AUDIOCONVERT
+#include "channel_layout.h"
+#endif
--- /dev/null
+/*
+ * Copyright (c) 2006 Michael Niedermayer <michaelni@gmx.at>
+ *
+ * This file is part of Libav.
+ *
+ * Libav is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * Libav 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with Libav; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+/**
+ * @file
+ * audio channel layout utility functions
+ */
+
+#include "avstring.h"
+#include "avutil.h"
+#include "channel_layout.h"
+#include "common.h"
+
+static const char * const channel_names[] = {
+ [0] = "FL", /* front left */
+ [1] = "FR", /* front right */
+ [2] = "FC", /* front center */
+ [3] = "LFE", /* low frequency */
+ [4] = "BL", /* back left */
+ [5] = "BR", /* back right */
+ [6] = "FLC", /* front left-of-center */
+ [7] = "FRC", /* front right-of-center */
+ [8] = "BC", /* back-center */
+ [9] = "SL", /* side left */
+ [10] = "SR", /* side right */
+ [11] = "TC", /* top center */
+ [12] = "TFL", /* top front left */
+ [13] = "TFC", /* top front center */
+ [14] = "TFR", /* top front right */
+ [15] = "TBL", /* top back left */
+ [16] = "TBC", /* top back center */
+ [17] = "TBR", /* top back right */
+ [29] = "DL", /* downmix left */
+ [30] = "DR", /* downmix right */
+ [31] = "WL", /* wide left */
+ [32] = "WR", /* wide right */
+ [33] = "SDL", /* surround direct left */
+ [34] = "SDR", /* surround direct right */
+ [35] = "LFE2", /* low frequency 2 */
+};
+
+static const char *get_channel_name(int channel_id)
+{
+ if (channel_id < 0 || channel_id >= FF_ARRAY_ELEMS(channel_names))
+ return NULL;
+ return channel_names[channel_id];
+}
+
+static const struct {
+ const char *name;
+ int nb_channels;
+ uint64_t layout;
+} channel_layout_map[] = {
+ { "mono", 1, AV_CH_LAYOUT_MONO },
+ { "stereo", 2, AV_CH_LAYOUT_STEREO },
+ { "stereo", 2, AV_CH_LAYOUT_STEREO_DOWNMIX },
+ { "2.1", 3, AV_CH_LAYOUT_2POINT1 },
+ { "3.0", 3, AV_CH_LAYOUT_SURROUND },
+ { "3.0(back)", 3, AV_CH_LAYOUT_2_1 },
+ { "3.1", 4, AV_CH_LAYOUT_3POINT1 },
+ { "4.0", 4, AV_CH_LAYOUT_4POINT0 },
+ { "quad", 4, AV_CH_LAYOUT_QUAD },
+ { "quad(side)", 4, AV_CH_LAYOUT_2_2 },
+ { "4.1", 5, AV_CH_LAYOUT_4POINT1 },
+ { "5.0", 5, AV_CH_LAYOUT_5POINT0 },
+ { "5.0", 5, AV_CH_LAYOUT_5POINT0_BACK },
+ { "5.1", 6, AV_CH_LAYOUT_5POINT1 },
+ { "5.1", 6, AV_CH_LAYOUT_5POINT1_BACK },
+ { "6.0", 6, AV_CH_LAYOUT_6POINT0 },
+ { "6.0(front)", 6, AV_CH_LAYOUT_6POINT0_FRONT },
+ { "hexagonal", 6, AV_CH_LAYOUT_HEXAGONAL },
+ { "6.1", 7, AV_CH_LAYOUT_6POINT1 },
+ { "6.1", 7, AV_CH_LAYOUT_6POINT1_BACK },
+ { "6.1(front)", 7, AV_CH_LAYOUT_6POINT1_FRONT },
+ { "7.0", 7, AV_CH_LAYOUT_7POINT0 },
+ { "7.0(front)", 7, AV_CH_LAYOUT_7POINT0_FRONT },
+ { "7.1", 8, AV_CH_LAYOUT_7POINT1 },
+ { "7.1(wide)", 8, AV_CH_LAYOUT_7POINT1_WIDE },
+ { "7.1(wide)", 8, AV_CH_LAYOUT_7POINT1_WIDE_BACK },
+ { "octagonal", 8, AV_CH_LAYOUT_OCTAGONAL },
+ { "downmix", 2, AV_CH_LAYOUT_STEREO_DOWNMIX, },
+ { 0 }
+};
+
+static uint64_t get_channel_layout_single(const char *name, int name_len)
+{
+ int i;
+ char *end;
+ int64_t layout;
+
+ for (i = 0; i < FF_ARRAY_ELEMS(channel_layout_map) - 1; i++) {
+ if (strlen(channel_layout_map[i].name) == name_len &&
+ !memcmp(channel_layout_map[i].name, name, name_len))
+ return channel_layout_map[i].layout;
+ }
+ for (i = 0; i < FF_ARRAY_ELEMS(channel_names); i++)
+ if (channel_names[i] &&
+ strlen(channel_names[i]) == name_len &&
+ !memcmp(channel_names[i], name, name_len))
+ return (int64_t)1 << i;
+ i = strtol(name, &end, 10);
+ if (end - name == name_len ||
+ (end + 1 - name == name_len && *end == 'c'))
+ return av_get_default_channel_layout(i);
+ layout = strtoll(name, &end, 0);
+ if (end - name == name_len)
+ return FFMAX(layout, 0);
+ return 0;
+}
+
+uint64_t av_get_channel_layout(const char *name)
+{
+ const char *n, *e;
+ const char *name_end = name + strlen(name);
+ int64_t layout = 0, layout_single;
+
+ for (n = name; n < name_end; n = e + 1) {
+ for (e = n; e < name_end && *e != '+' && *e != '|'; e++);
+ layout_single = get_channel_layout_single(n, e - n);
+ if (!layout_single)
+ return 0;
+ layout |= layout_single;
+ }
+ return layout;
+}
+
+void av_get_channel_layout_string(char *buf, int buf_size,
+ int nb_channels, uint64_t channel_layout)
+{
+ int i;
+
+ if (nb_channels <= 0)
+ nb_channels = av_get_channel_layout_nb_channels(channel_layout);
+
+ for (i = 0; channel_layout_map[i].name; i++)
+ if (nb_channels == channel_layout_map[i].nb_channels &&
+ channel_layout == channel_layout_map[i].layout) {
+ av_strlcpy(buf, channel_layout_map[i].name, buf_size);
+ return;
+ }
+
+ snprintf(buf, buf_size, "%d channels", nb_channels);
+ if (channel_layout) {
+ int i, ch;
+ av_strlcat(buf, " (", buf_size);
+ for (i = 0, ch = 0; i < 64; i++) {
+ if ((channel_layout & (UINT64_C(1) << i))) {
+ const char *name = get_channel_name(i);
+ if (name) {
+ if (ch > 0)
+ av_strlcat(buf, "|", buf_size);
+ av_strlcat(buf, name, buf_size);
+ }
+ ch++;
+ }
+ }
+ av_strlcat(buf, ")", buf_size);
+ }
+}
+
+int av_get_channel_layout_nb_channels(uint64_t channel_layout)
+{
+ return av_popcount64(channel_layout);
+}
+
+uint64_t av_get_default_channel_layout(int nb_channels)
+{
+ switch(nb_channels) {
+ case 1: return AV_CH_LAYOUT_MONO;
+ case 2: return AV_CH_LAYOUT_STEREO;
+ case 3: return AV_CH_LAYOUT_SURROUND;
+ case 4: return AV_CH_LAYOUT_QUAD;
+ case 5: return AV_CH_LAYOUT_5POINT0;
+ case 6: return AV_CH_LAYOUT_5POINT1;
+ case 7: return AV_CH_LAYOUT_6POINT1;
+ case 8: return AV_CH_LAYOUT_7POINT1;
+ default: return 0;
+ }
+}
+
+int av_get_channel_layout_channel_index(uint64_t channel_layout,
+ uint64_t channel)
+{
+ if (!(channel_layout & channel) ||
+ av_get_channel_layout_nb_channels(channel) != 1)
+ return AVERROR(EINVAL);
+ channel_layout &= channel - 1;
+ return av_get_channel_layout_nb_channels(channel_layout);
+}
+
+const char *av_get_channel_name(uint64_t channel)
+{
+ int i;
+ if (av_get_channel_layout_nb_channels(channel) != 1)
+ return NULL;
+ for (i = 0; i < 64; i++)
+ if ((1ULL<<i) & channel)
+ return get_channel_name(i);
+ return NULL;
+}
+
+uint64_t av_channel_layout_extract_channel(uint64_t channel_layout, int index)
+{
+ int i;
+
+ if (av_get_channel_layout_nb_channels(channel_layout) <= index)
+ return 0;
+
+ for (i = 0; i < 64; i++) {
+ if ((1ULL << i) & channel_layout && !index--)
+ return 1ULL << i;
+ }
+ return 0;
+}
--- /dev/null
+/*
+ * Copyright (c) 2006 Michael Niedermayer <michaelni@gmx.at>
+ * Copyright (c) 2008 Peter Ross
+ *
+ * This file is part of Libav.
+ *
+ * Libav is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * Libav 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with Libav; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifndef AVUTIL_CHANNEL_LAYOUT_H
+#define AVUTIL_CHANNEL_LAYOUT_H
+
+#include <stdint.h>
+
+/**
+ * @file
+ * audio channel layout utility functions
+ */
+
+/**
+ * @addtogroup lavu_audio
+ * @{
+ */
+
+/**
+ * @defgroup channel_masks Audio channel masks
+ * @{
+ */
+#define AV_CH_FRONT_LEFT 0x00000001
+#define AV_CH_FRONT_RIGHT 0x00000002
+#define AV_CH_FRONT_CENTER 0x00000004
+#define AV_CH_LOW_FREQUENCY 0x00000008
+#define AV_CH_BACK_LEFT 0x00000010
+#define AV_CH_BACK_RIGHT 0x00000020
+#define AV_CH_FRONT_LEFT_OF_CENTER 0x00000040
+#define AV_CH_FRONT_RIGHT_OF_CENTER 0x00000080
+#define AV_CH_BACK_CENTER 0x00000100
+#define AV_CH_SIDE_LEFT 0x00000200
+#define AV_CH_SIDE_RIGHT 0x00000400
+#define AV_CH_TOP_CENTER 0x00000800
+#define AV_CH_TOP_FRONT_LEFT 0x00001000
+#define AV_CH_TOP_FRONT_CENTER 0x00002000
+#define AV_CH_TOP_FRONT_RIGHT 0x00004000
+#define AV_CH_TOP_BACK_LEFT 0x00008000
+#define AV_CH_TOP_BACK_CENTER 0x00010000
+#define AV_CH_TOP_BACK_RIGHT 0x00020000
+#define AV_CH_STEREO_LEFT 0x20000000 ///< Stereo downmix.
+#define AV_CH_STEREO_RIGHT 0x40000000 ///< See AV_CH_STEREO_LEFT.
+#define AV_CH_WIDE_LEFT 0x0000000080000000ULL
+#define AV_CH_WIDE_RIGHT 0x0000000100000000ULL
+#define AV_CH_SURROUND_DIRECT_LEFT 0x0000000200000000ULL
+#define AV_CH_SURROUND_DIRECT_RIGHT 0x0000000400000000ULL
+#define AV_CH_LOW_FREQUENCY_2 0x0000000800000000ULL
+
+/** Channel mask value used for AVCodecContext.request_channel_layout
+ to indicate that the user requests the channel order of the decoder output
+ to be the native codec channel order. */
+#define AV_CH_LAYOUT_NATIVE 0x8000000000000000ULL
+
+/**
+ * @}
+ * @defgroup channel_mask_c Audio channel convenience macros
+ * @{
+ * */
+#define AV_CH_LAYOUT_MONO (AV_CH_FRONT_CENTER)
+#define AV_CH_LAYOUT_STEREO (AV_CH_FRONT_LEFT|AV_CH_FRONT_RIGHT)
+#define AV_CH_LAYOUT_2POINT1 (AV_CH_LAYOUT_STEREO|AV_CH_LOW_FREQUENCY)
+#define AV_CH_LAYOUT_2_1 (AV_CH_LAYOUT_STEREO|AV_CH_BACK_CENTER)
+#define AV_CH_LAYOUT_SURROUND (AV_CH_LAYOUT_STEREO|AV_CH_FRONT_CENTER)
+#define AV_CH_LAYOUT_3POINT1 (AV_CH_LAYOUT_SURROUND|AV_CH_LOW_FREQUENCY)
+#define AV_CH_LAYOUT_4POINT0 (AV_CH_LAYOUT_SURROUND|AV_CH_BACK_CENTER)
+#define AV_CH_LAYOUT_4POINT1 (AV_CH_LAYOUT_4POINT0|AV_CH_LOW_FREQUENCY)
+#define AV_CH_LAYOUT_2_2 (AV_CH_LAYOUT_STEREO|AV_CH_SIDE_LEFT|AV_CH_SIDE_RIGHT)
+#define AV_CH_LAYOUT_QUAD (AV_CH_LAYOUT_STEREO|AV_CH_BACK_LEFT|AV_CH_BACK_RIGHT)
+#define AV_CH_LAYOUT_5POINT0 (AV_CH_LAYOUT_SURROUND|AV_CH_SIDE_LEFT|AV_CH_SIDE_RIGHT)
+#define AV_CH_LAYOUT_5POINT1 (AV_CH_LAYOUT_5POINT0|AV_CH_LOW_FREQUENCY)
+#define AV_CH_LAYOUT_5POINT0_BACK (AV_CH_LAYOUT_SURROUND|AV_CH_BACK_LEFT|AV_CH_BACK_RIGHT)
+#define AV_CH_LAYOUT_5POINT1_BACK (AV_CH_LAYOUT_5POINT0_BACK|AV_CH_LOW_FREQUENCY)
+#define AV_CH_LAYOUT_6POINT0 (AV_CH_LAYOUT_5POINT0|AV_CH_BACK_CENTER)
+#define AV_CH_LAYOUT_6POINT0_FRONT (AV_CH_LAYOUT_2_2|AV_CH_FRONT_LEFT_OF_CENTER|AV_CH_FRONT_RIGHT_OF_CENTER)
+#define AV_CH_LAYOUT_HEXAGONAL (AV_CH_LAYOUT_5POINT0_BACK|AV_CH_BACK_CENTER)
+#define AV_CH_LAYOUT_6POINT1 (AV_CH_LAYOUT_5POINT1|AV_CH_BACK_CENTER)
+#define AV_CH_LAYOUT_6POINT1_BACK (AV_CH_LAYOUT_5POINT1_BACK|AV_CH_BACK_CENTER)
+#define AV_CH_LAYOUT_6POINT1_FRONT (AV_CH_LAYOUT_6POINT0_FRONT|AV_CH_LOW_FREQUENCY)
+#define AV_CH_LAYOUT_7POINT0 (AV_CH_LAYOUT_5POINT0|AV_CH_BACK_LEFT|AV_CH_BACK_RIGHT)
+#define AV_CH_LAYOUT_7POINT0_FRONT (AV_CH_LAYOUT_5POINT0|AV_CH_FRONT_LEFT_OF_CENTER|AV_CH_FRONT_RIGHT_OF_CENTER)
+#define AV_CH_LAYOUT_7POINT1 (AV_CH_LAYOUT_5POINT1|AV_CH_BACK_LEFT|AV_CH_BACK_RIGHT)
+#define AV_CH_LAYOUT_7POINT1_WIDE (AV_CH_LAYOUT_5POINT1|AV_CH_FRONT_LEFT_OF_CENTER|AV_CH_FRONT_RIGHT_OF_CENTER)
+#define AV_CH_LAYOUT_7POINT1_WIDE_BACK (AV_CH_LAYOUT_5POINT1_BACK|AV_CH_FRONT_LEFT_OF_CENTER|AV_CH_FRONT_RIGHT_OF_CENTER)
+#define AV_CH_LAYOUT_OCTAGONAL (AV_CH_LAYOUT_5POINT0|AV_CH_BACK_LEFT|AV_CH_BACK_CENTER|AV_CH_BACK_RIGHT)
+#define AV_CH_LAYOUT_STEREO_DOWNMIX (AV_CH_STEREO_LEFT|AV_CH_STEREO_RIGHT)
+
+enum AVMatrixEncoding {
+ AV_MATRIX_ENCODING_NONE,
+ AV_MATRIX_ENCODING_DOLBY,
+ AV_MATRIX_ENCODING_DPLII,
+ AV_MATRIX_ENCODING_NB
+};
+
+/**
+ * @}
+ */
+
+/**
+ * Return a channel layout id that matches name, or 0 if no match is found.
+ *
+ * name can be one or several of the following notations,
+ * separated by '+' or '|':
+ * - the name of an usual channel layout (mono, stereo, 4.0, quad, 5.0,
+ * 5.0(side), 5.1, 5.1(side), 7.1, 7.1(wide), downmix);
+ * - the name of a single channel (FL, FR, FC, LFE, BL, BR, FLC, FRC, BC,
+ * SL, SR, TC, TFL, TFC, TFR, TBL, TBC, TBR, DL, DR);
+ * - a number of channels, in decimal, optionally followed by 'c', yielding
+ * the default channel layout for that number of channels (@see
+ * av_get_default_channel_layout);
+ * - a channel layout mask, in hexadecimal starting with "0x" (see the
+ * AV_CH_* macros).
+ *
+ * Example: "stereo+FC" = "2+FC" = "2c+1c" = "0x7"
+ */
+uint64_t av_get_channel_layout(const char *name);
+
+/**
+ * Return a description of a channel layout.
+ * If nb_channels is <= 0, it is guessed from the channel_layout.
+ *
+ * @param buf put here the string containing the channel layout
+ * @param buf_size size in bytes of the buffer
+ */
+void av_get_channel_layout_string(char *buf, int buf_size, int nb_channels, uint64_t channel_layout);
+
+/**
+ * Return the number of channels in the channel layout.
+ */
+int av_get_channel_layout_nb_channels(uint64_t channel_layout);
+
+/**
+ * Return default channel layout for a given number of channels.
+ */
+uint64_t av_get_default_channel_layout(int nb_channels);
+
+/**
+ * Get the index of a channel in channel_layout.
+ *
+ * @param channel a channel layout describing exactly one channel which must be
+ * present in channel_layout.
+ *
+ * @return index of channel in channel_layout on success, a negative AVERROR
+ * on error.
+ */
+int av_get_channel_layout_channel_index(uint64_t channel_layout,
+ uint64_t channel);
+
+/**
+ * Get the channel with the given index in channel_layout.
+ */
+uint64_t av_channel_layout_extract_channel(uint64_t channel_layout, int index);
+
+/**
+ * Get the name of a given channel.
+ *
+ * @return channel name on success, NULL on error.
+ */
+const char *av_get_channel_name(uint64_t channel);
+
+/**
+ * @}
+ */
+
+#endif /* AVUTIL_CHANNEL_LAYOUT_H */
*/
#define LIBAVUTIL_VERSION_MAJOR 52
-#define LIBAVUTIL_VERSION_MINOR 1
+#define LIBAVUTIL_VERSION_MINOR 2
#define LIBAVUTIL_VERSION_MICRO 0
#define LIBAVUTIL_VERSION_INT AV_VERSION_INT(LIBAVUTIL_VERSION_MAJOR, \
#ifndef FF_API_AV_REVERSE
#define FF_API_AV_REVERSE (LIBAVUTIL_VERSION_MAJOR < 53)
#endif
+#ifndef FF_API_AUDIOCONVERT
+#define FF_API_AUDIOCONVERT (LIBAVUTIL_VERSION_MAJOR < 53)
+#endif
/**
* @}