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authorJustin Ruggles <justin.ruggles@gmail.com>2012-11-10 09:03:17 -0500
committerJustin Ruggles <justin.ruggles@gmail.com>2012-11-11 13:35:12 -0500
commit5980f5dd18822f29cfd583c9c085c3e77d81aa72 (patch)
treefd0f7c657d16f251d00247cff8e43cc596b5b981 /libavutil/audioconvert.c
parent802713c4e7b41bc2deed754d78649945c3442063 (diff)
downloadffmpeg-streaming-5980f5dd18822f29cfd583c9c085c3e77d81aa72.zip
ffmpeg-streaming-5980f5dd18822f29cfd583c9c085c3e77d81aa72.tar.gz
lavu: rename audioconvert.* to channel_layout.* and deprecate audioconvert.h
Diffstat (limited to 'libavutil/audioconvert.c')
-rw-r--r--libavutil/audioconvert.c231
1 files changed, 0 insertions, 231 deletions
diff --git a/libavutil/audioconvert.c b/libavutil/audioconvert.c
deleted file mode 100644
index 113b9d7..0000000
--- a/libavutil/audioconvert.c
+++ /dev/null
@@ -1,231 +0,0 @@
-/*
- * 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;
-}
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