mirror of
https://github.com/mpv-player/mpv
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129 lines
4.5 KiB
C
129 lines
4.5 KiB
C
/*
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* The sample format system used lin libaf is based on bitmasks.
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* The format definition only refers to the storage format,
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* not the resolution.
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*
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* This file is part of MPlayer.
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*
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* MPlayer is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* MPlayer is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with MPlayer; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#ifndef MPLAYER_AF_FORMAT_H
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#define MPLAYER_AF_FORMAT_H
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#include <stdbool.h>
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#include "misc/bstr.h"
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// Signed/unsigned
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#define AF_FORMAT_SI (0<<0) // Signed
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#define AF_FORMAT_US (1<<0) // Unsigned
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#define AF_FORMAT_SIGN_MASK (1<<0)
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// Bits used
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// Some code assumes they're sorted by size.
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#define AF_FORMAT_8BIT (0<<1)
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#define AF_FORMAT_16BIT (1<<1)
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#define AF_FORMAT_24BIT (2<<1)
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#define AF_FORMAT_32BIT (3<<1)
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#define AF_FORMAT_64BIT (4<<1)
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#define AF_FORMAT_BITS_MASK (7<<1)
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// Fixed/floating point/special
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#define AF_FORMAT_I (1<<4) // Int
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#define AF_FORMAT_F (2<<4) // Foating point
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#define AF_FORMAT_S (4<<4) // special (IEC61937)
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#define AF_FORMAT_TYPE_MASK (7<<4)
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// Interleaving (planar formats have data for each channel in separate planes)
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#define AF_FORMAT_INTERLEAVED (0<<7) // must be 0
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#define AF_FORMAT_PLANAR (1<<7)
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#define AF_FORMAT_INTERLEAVING_MASK (1<<7)
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#define AF_FORMAT_S_CODEC(n) ((n)<<8)
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#define AF_FORMAT_S_CODEC_MASK (15 <<8) // 16 codecs max.
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#define AF_FORMAT_MASK ((1<<12)-1)
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#define AF_INTP (AF_FORMAT_I|AF_FORMAT_PLANAR)
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#define AF_FLTP (AF_FORMAT_F|AF_FORMAT_PLANAR)
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#define AF_FORMAT_S_(n) (AF_FORMAT_S_CODEC(n)|AF_FORMAT_S|AF_FORMAT_16BIT)
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// actual sample formats
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enum af_format {
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AF_FORMAT_UNKNOWN = 0,
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AF_FORMAT_U8 = (AF_FORMAT_I|AF_FORMAT_US|AF_FORMAT_8BIT),
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AF_FORMAT_S8 = (AF_FORMAT_I|AF_FORMAT_SI|AF_FORMAT_8BIT),
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AF_FORMAT_U16 = (AF_FORMAT_I|AF_FORMAT_US|AF_FORMAT_16BIT),
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AF_FORMAT_S16 = (AF_FORMAT_I|AF_FORMAT_SI|AF_FORMAT_16BIT),
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AF_FORMAT_U24 = (AF_FORMAT_I|AF_FORMAT_US|AF_FORMAT_24BIT),
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AF_FORMAT_S24 = (AF_FORMAT_I|AF_FORMAT_SI|AF_FORMAT_24BIT),
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AF_FORMAT_U32 = (AF_FORMAT_I|AF_FORMAT_US|AF_FORMAT_32BIT),
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AF_FORMAT_S32 = (AF_FORMAT_I|AF_FORMAT_SI|AF_FORMAT_32BIT),
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AF_FORMAT_FLOAT = (AF_FORMAT_F|AF_FORMAT_32BIT),
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AF_FORMAT_DOUBLE = (AF_FORMAT_F|AF_FORMAT_64BIT),
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// Planar variants
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AF_FORMAT_U8P = (AF_INTP|AF_FORMAT_US|AF_FORMAT_8BIT),
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AF_FORMAT_S16P = (AF_INTP|AF_FORMAT_SI|AF_FORMAT_16BIT),
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AF_FORMAT_S32P = (AF_INTP|AF_FORMAT_SI|AF_FORMAT_32BIT),
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AF_FORMAT_FLOATP = (AF_FLTP|AF_FORMAT_32BIT),
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AF_FORMAT_DOUBLEP = (AF_FLTP|AF_FORMAT_64BIT),
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// All of these use IEC61937 framing, and otherwise pretend to be like PCM.
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AF_FORMAT_S_AAC = AF_FORMAT_S_(0),
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AF_FORMAT_S_AC3 = AF_FORMAT_S_(1),
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AF_FORMAT_S_DTS = AF_FORMAT_S_(2),
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AF_FORMAT_S_DTSHD = AF_FORMAT_S_(3),
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AF_FORMAT_S_EAC3 = AF_FORMAT_S_(4),
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AF_FORMAT_S_MP3 = AF_FORMAT_S_(5),
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AF_FORMAT_S_TRUEHD = AF_FORMAT_S_(6),
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};
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#define AF_FORMAT_IS_IEC61937(f) (((f) & AF_FORMAT_TYPE_MASK) == AF_FORMAT_S)
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#define AF_FORMAT_IS_SPECIAL(f) AF_FORMAT_IS_IEC61937(f)
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struct af_fmt_entry {
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const char *name;
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int format;
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};
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extern const struct af_fmt_entry af_fmtstr_table[];
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int af_str2fmt_short(bstr str);
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const char *af_fmt_to_str(int format);
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int af_fmt2bps(int format);
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int af_fmt2bits(int format);
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bool af_fmt_is_float(int format);
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int af_fmt_change_bits(int format, int bits);
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int af_fmt_to_planar(int format);
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int af_fmt_from_planar(int format);
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bool af_fmt_is_planar(int format);
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// Amount of bytes that contain audio of the given duration, aligned to frames.
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int af_fmt_seconds_to_bytes(int format, float seconds, int channels, int samplerate);
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bool af_fmt_is_valid(int format);
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void af_fill_silence(void *dst, size_t bytes, int format);
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int af_format_conversion_score(int dst_format, int src_format);
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#endif /* MPLAYER_AF_FORMAT_H */
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