mirror of
https://github.com/mpv-player/mpv
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d74bac22b9
Turn the sample format definitions into an enum. (The format bits are still macros.) The native endian versions of the new definitions don't have a NE suffix anymore, although there are still compatibility defines since too much code uses the NE variants. Rename the format bits for special formats to help to distinguish them from the actual definitions, e.g. AF_FORMAT_AC3 to AF_FORMAT_S_AC3.
156 lines
6.0 KiB
C
156 lines
6.0 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 <sys/types.h>
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#include "config.h"
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#include "mpvcore/bstr.h"
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#if BYTE_ORDER == BIG_ENDIAN
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#define AF_SELECT_LE_BE(LE, BE) BE
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#else
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#define AF_SELECT_LE_BE(LE, BE) LE
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#endif
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// Endianness
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#define AF_FORMAT_BE (0<<0) // Big Endian
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#define AF_FORMAT_LE (1<<0) // Little Endian
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#define AF_FORMAT_END_MASK (1<<0)
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#define AF_FORMAT_NE AF_SELECT_LE_BE(AF_FORMAT_LE, AF_FORMAT_BE)
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// Signed/unsigned
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#define AF_FORMAT_SI (0<<1) // Signed
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#define AF_FORMAT_US (1<<1) // Unsigned
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#define AF_FORMAT_SIGN_MASK (1<<1)
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// Bits used
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#define AF_FORMAT_8BIT (0<<3)
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#define AF_FORMAT_16BIT (1<<3)
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#define AF_FORMAT_24BIT (2<<3)
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#define AF_FORMAT_32BIT (3<<3)
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#define AF_FORMAT_64BIT (4<<3)
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#define AF_FORMAT_BITS_MASK (7<<3)
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// Special flags refering to non pcm data (note: 1<<6, 2<<6, 5<<6 unused)
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#define AF_FORMAT_S_MPEG2 (3<<6) // MPEG(2) audio
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#define AF_FORMAT_S_AC3 (4<<6) // Dolby Digital AC3
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#define AF_FORMAT_S_IEC61937 (6<<6)
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#define AF_FORMAT_SPECIAL_MASK (7<<6)
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// Fixed or floating point
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#define AF_FORMAT_I (1<<9) // Int
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#define AF_FORMAT_F (2<<9) // Foating point
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#define AF_FORMAT_POINT_MASK (3<<9)
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#define AF_FORMAT_MASK ((1<<11)-1)
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// PREDEFINED formats
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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|AF_FORMAT_NE),
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AF_FORMAT_S8 = (AF_FORMAT_I|AF_FORMAT_SI|AF_FORMAT_8BIT|AF_FORMAT_NE),
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AF_FORMAT_U16_LE = (AF_FORMAT_I|AF_FORMAT_US|AF_FORMAT_16BIT|AF_FORMAT_LE),
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AF_FORMAT_U16_BE = (AF_FORMAT_I|AF_FORMAT_US|AF_FORMAT_16BIT|AF_FORMAT_BE),
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AF_FORMAT_S16_LE = (AF_FORMAT_I|AF_FORMAT_SI|AF_FORMAT_16BIT|AF_FORMAT_LE),
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AF_FORMAT_S16_BE = (AF_FORMAT_I|AF_FORMAT_SI|AF_FORMAT_16BIT|AF_FORMAT_BE),
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AF_FORMAT_U24_LE = (AF_FORMAT_I|AF_FORMAT_US|AF_FORMAT_24BIT|AF_FORMAT_LE),
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AF_FORMAT_U24_BE = (AF_FORMAT_I|AF_FORMAT_US|AF_FORMAT_24BIT|AF_FORMAT_BE),
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AF_FORMAT_S24_LE = (AF_FORMAT_I|AF_FORMAT_SI|AF_FORMAT_24BIT|AF_FORMAT_LE),
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AF_FORMAT_S24_BE = (AF_FORMAT_I|AF_FORMAT_SI|AF_FORMAT_24BIT|AF_FORMAT_BE),
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AF_FORMAT_U32_LE = (AF_FORMAT_I|AF_FORMAT_US|AF_FORMAT_32BIT|AF_FORMAT_LE),
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AF_FORMAT_U32_BE = (AF_FORMAT_I|AF_FORMAT_US|AF_FORMAT_32BIT|AF_FORMAT_BE),
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AF_FORMAT_S32_LE = (AF_FORMAT_I|AF_FORMAT_SI|AF_FORMAT_32BIT|AF_FORMAT_LE),
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AF_FORMAT_S32_BE = (AF_FORMAT_I|AF_FORMAT_SI|AF_FORMAT_32BIT|AF_FORMAT_BE),
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AF_FORMAT_FLOAT_LE = (AF_FORMAT_F|AF_FORMAT_32BIT|AF_FORMAT_LE),
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AF_FORMAT_FLOAT_BE = (AF_FORMAT_F|AF_FORMAT_32BIT|AF_FORMAT_BE),
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AF_FORMAT_DOUBLE_LE = (AF_FORMAT_F|AF_FORMAT_64BIT|AF_FORMAT_LE),
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AF_FORMAT_DOUBLE_BE = (AF_FORMAT_F|AF_FORMAT_64BIT|AF_FORMAT_BE),
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AF_FORMAT_AC3_LE = (AF_FORMAT_S_AC3|AF_FORMAT_16BIT|AF_FORMAT_LE),
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AF_FORMAT_AC3_BE = (AF_FORMAT_S_AC3|AF_FORMAT_16BIT|AF_FORMAT_BE),
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AF_FORMAT_IEC61937_LE = (AF_FORMAT_S_IEC61937|AF_FORMAT_16BIT|AF_FORMAT_LE),
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AF_FORMAT_IEC61937_BE = (AF_FORMAT_S_IEC61937|AF_FORMAT_16BIT|AF_FORMAT_BE),
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AF_FORMAT_MPEG2 = (AF_FORMAT_S_MPEG2),
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// Native endian variants
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AF_FORMAT_U16 = AF_SELECT_LE_BE(AF_FORMAT_U16_LE, AF_FORMAT_U16_BE),
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AF_FORMAT_S16 = AF_SELECT_LE_BE(AF_FORMAT_S16_LE, AF_FORMAT_S16_BE),
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AF_FORMAT_U24 = AF_SELECT_LE_BE(AF_FORMAT_U24_LE, AF_FORMAT_U24_BE),
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AF_FORMAT_S24 = AF_SELECT_LE_BE(AF_FORMAT_S24_LE, AF_FORMAT_S24_BE),
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AF_FORMAT_U32 = AF_SELECT_LE_BE(AF_FORMAT_U32_LE, AF_FORMAT_U32_BE),
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AF_FORMAT_S32 = AF_SELECT_LE_BE(AF_FORMAT_S32_LE, AF_FORMAT_S32_BE),
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AF_FORMAT_FLOAT = AF_SELECT_LE_BE(AF_FORMAT_FLOAT_LE, AF_FORMAT_FLOAT_BE),
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AF_FORMAT_DOUBLE = AF_SELECT_LE_BE(AF_FORMAT_DOUBLE_LE, AF_FORMAT_DOUBLE_BE),
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AF_FORMAT_AC3 = AF_SELECT_LE_BE(AF_FORMAT_AC3_LE, AF_FORMAT_AC3_BE),
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AF_FORMAT_IEC61937 = AF_SELECT_LE_BE(AF_FORMAT_IEC61937_LE, AF_FORMAT_IEC61937_BE),
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};
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#define AF_FORMAT_U16_NE AF_FORMAT_U16
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#define AF_FORMAT_S16_NE AF_FORMAT_S16
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#define AF_FORMAT_U24_NE AF_FORMAT_U24
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#define AF_FORMAT_S24_NE AF_FORMAT_S24
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#define AF_FORMAT_U32_NE AF_FORMAT_U32
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#define AF_FORMAT_S32_NE AF_FORMAT_S32
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#define AF_FORMAT_FLOAT_NE AF_FORMAT_FLOAT
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#define AF_FORMAT_DOUBLE_NE AF_FORMAT_DOUBLE
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#define AF_FORMAT_AC3_NE AF_FORMAT_AC3
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#define AF_FORMAT_IEC61937_NE AF_FORMAT_IEC61937
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#define AF_FORMAT_IS_AC3(fmt) \
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(((fmt) & AF_FORMAT_SPECIAL_MASK) == AF_FORMAT_S_AC3)
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#define AF_FORMAT_IS_IEC61937(fmt) \
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(AF_FORMAT_IS_AC3(fmt) || \
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((fmt) & AF_FORMAT_SPECIAL_MASK) == AF_FORMAT_S_IEC61937)
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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_fmt2bits(int format);
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int af_fmt_change_bits(int format, int bits);
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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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#endif /* MPLAYER_AF_FORMAT_H */
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