From fa2fe8eed4fdf47766e8107b3a75ec5af762be9d Mon Sep 17 00:00:00 2001 From: Vicki Pfau Date: Mon, 22 Apr 2024 00:49:34 -0700 Subject: [PATCH] Third-Party: Remove blip_buf --- CMakeLists.txt | 4 +- README.md | 1 - README_DE.md | 1 - README_ES.md | 1 - README_ZH_CN.md | 1 - include/mgba/core/blip_buf.h | 72 ---- res/licenses/blip_buf.txt | 504 --------------------------- src/third-party/blip_buf/blip_buf.c | 344 ------------------ src/third-party/blip_buf/license.txt | 504 --------------------------- 9 files changed, 1 insertion(+), 1431 deletions(-) delete mode 100644 include/mgba/core/blip_buf.h delete mode 100644 res/licenses/blip_buf.txt delete mode 100644 src/third-party/blip_buf/blip_buf.c delete mode 100644 src/third-party/blip_buf/license.txt diff --git a/CMakeLists.txt b/CMakeLists.txt index 24caaaf9f..d573b0c6c 100644 --- a/CMakeLists.txt +++ b/CMakeLists.txt @@ -586,8 +586,6 @@ if(USE_FFMPEG) endif() endif() -list(APPEND THIRD_PARTY_SRC "${CMAKE_CURRENT_SOURCE_DIR}/src/third-party/blip_buf/blip_buf.c") - if(WANT_ZLIB AND NOT USE_ZLIB) set(SKIP_INSTALL_ALL ON) add_subdirectory(${CMAKE_CURRENT_SOURCE_DIR}/src/third-party/zlib zlib EXCLUDE_FROM_ALL) @@ -1085,7 +1083,7 @@ install(DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}/include/mgba-util DESTINATION ${CM install(FILES ${CMAKE_CURRENT_BINARY_DIR}/include/mgba/flags.h DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}/mgba COMPONENT ${BINARY_NAME}-dev) # Packaging -install(FILES ${CMAKE_CURRENT_SOURCE_DIR}/res/licenses/blip_buf.txt DESTINATION ${CMAKE_INSTALL_DOCDIR}/licenses COMPONENT ${BINARY_NAME}) +install(FILES DESTINATION ${CMAKE_INSTALL_DOCDIR}/licenses COMPONENT ${BINARY_NAME}) install(FILES ${CMAKE_CURRENT_SOURCE_DIR}/res/licenses/inih.txt DESTINATION ${CMAKE_INSTALL_DOCDIR}/licenses COMPONENT ${BINARY_NAME}) if(USE_DISCORD_RPC) install(FILES ${CMAKE_CURRENT_SOURCE_DIR}/res/licenses/discord-rpc.txt DESTINATION ${CMAKE_INSTALL_DOCDIR}/licenses COMPONENT ${BINARY_NAME}) diff --git a/README.md b/README.md index 78b69f255..d937fa0c9 100644 --- a/README.md +++ b/README.md @@ -260,7 +260,6 @@ mGBA is Copyright © 2013 – 2023 Jeffrey Pfau. It is distributed under the [Mo mGBA contains the following third-party libraries: - [inih](https://github.com/benhoyt/inih), which is copyright © 2009 – 2020 Ben Hoyt and used under a BSD 3-clause license. -- [blip-buf](https://code.google.com/archive/p/blip-buf), which is copyright © 2003 – 2009 Shay Green and used under a Lesser GNU Public License. - [LZMA SDK](http://www.7-zip.org/sdk.html), which is public domain. - [MurmurHash3](https://github.com/aappleby/smhasher) implementation by Austin Appleby, which is public domain. - [getopt for MSVC](https://github.com/skandhurkat/Getopt-for-Visual-Studio/), which is public domain. diff --git a/README_DE.md b/README_DE.md index 9b653c5d2..9a4066a0f 100644 --- a/README_DE.md +++ b/README_DE.md @@ -247,7 +247,6 @@ Copyright für mGBA © 2013 – 2021 Jeffrey Pfau. mGBA wird unter der [Mozilla mGBA beinhaltet die folgenden Bibliotheken von Drittanbietern: - [inih](https://github.com/benhoyt/inih), Copyright © 2009 - 2020 Ben Hoyt, verwendet unter einer BSD 3-clause-Lizenz. -- [blip-buf](https://code.google.com/archive/b/blip-buf), Copyright © 2003 - 2009 Shay Green, verwendet unter einer Lesser GNU Public License. - [LZMA SDK](http://www.7-zip.org/sdk.html), Public Domain. - [MurmurHash3](https://github.com/aappleby/smhasher), Implementierung von Austin Appleby, Public Domain. - [getopt fot MSVC](https://github.com/skandhurkat/Getopt-for-Visual-Studio/), Public Domain. diff --git a/README_ES.md b/README_ES.md index f174e114c..1a6d0b797 100644 --- a/README_ES.md +++ b/README_ES.md @@ -247,7 +247,6 @@ mGBA es Copyright © 2013 – 2021 Jeffrey Pfau. Es distribuído bajo la [licenc mGBA contiene las siguientes bibliotecas de terceros: - [inih](https://github.com/benhoyt/inih), que es copyright © 2009 - 2020 Ben Hoyt y se utiliza bajo licencia de la cláusula 3 de BSD. -- [blip-buf](https://code.google.com/archive/p/blip-buf), que es copyright © 2003 - 2009 Shay Green y se usa bajo LGPL. - [LZMA SDK](http://www.7-zip.org/sdk.html), la cual está en el dominio público. - [MurmurHash3](https://github.com/aappleby/smhasher), implementación por Austin Appleby, la cual está en el dominio público. - [getopt for MSVC](https://github.com/skandhurkat/Getopt-for-Visual-Studio/), la cual está en el dominio público. diff --git a/README_ZH_CN.md b/README_ZH_CN.md index 757f1d0c6..ab725694c 100644 --- a/README_ZH_CN.md +++ b/README_ZH_CN.md @@ -245,7 +245,6 @@ mGBA 版权 © 2013 – 2020 Jeffrey Pfau。基于 [Mozilla 公共许可证版 mGBA 包含以下第三方库： - [inih](https://github.com/benhoyt/inih)：版权 © 2009 – 2020 Ben Hoyt，基于 BSD 3-clause 许可证使用。 -- [blip-buf](https://code.google.com/archive/p/blip-buf)：版权 © 2003 – 2009 Shay Green，基于 Lesser GNU 公共许可证使用。 - [LZMA SDK](http://www.7-zip.org/sdk.html)：属公有领域使用。 - [MurmurHash3](https://github.com/aappleby/smhasher)：由 Austin Appleby 实施，属公有领域使用。 - [getopt for MSVC](https://github.com/skandhurkat/Getopt-for-Visual-Studio/)：属公有领域使用。 diff --git a/include/mgba/core/blip_buf.h b/include/mgba/core/blip_buf.h deleted file mode 100644 index 22b0a3ec8..000000000 --- a/include/mgba/core/blip_buf.h +++ /dev/null @@ -1,72 +0,0 @@ -/** \file -Sample buffer that resamples from input clock rate to output sample rate */ - -/* blip_buf 1.1.0 */ -#ifndef BLIP_BUF_H -#define BLIP_BUF_H - -#ifdef __cplusplus - extern "C" { -#endif - -/** First parameter of most functions is blip_t*, or const blip_t* if nothing -is changed. */ -typedef struct blip_t blip_t; - -/** Creates new buffer that can hold at most sample_count samples. Sets rates -so that there are blip_max_ratio clocks per sample. Returns pointer to new -buffer, or NULL if insufficient memory. */ -blip_t* blip_new( int sample_count ); - -/** Sets approximate input clock rate and output sample rate. For every -clock_rate input clocks, approximately sample_rate samples are generated. */ -void blip_set_rates( blip_t*, double clock_rate, double sample_rate ); - -enum { /** Maximum clock_rate/sample_rate ratio. For a given sample_rate, -clock_rate must not be greater than sample_rate*blip_max_ratio. */ -blip_max_ratio = 0x100000 }; - -/** Clears entire buffer. Afterwards, blip_samples_avail() == 0. */ -void blip_clear( blip_t* ); - -/** Adds positive/negative delta into buffer at specified clock time. */ -void blip_add_delta( blip_t*, unsigned int clock_time, int delta ); - -/** Same as blip_add_delta(), but uses faster, lower-quality synthesis. */ -void blip_add_delta_fast( blip_t*, unsigned int clock_time, int delta ); - -/** Length of time frame, in clocks, needed to make sample_count additional -samples available. */ -int blip_clocks_needed( const blip_t*, int sample_count ); - -enum { /** Maximum number of samples that can be generated from one time frame. */ -blip_max_frame = 4000 }; - -/** Makes input clocks before clock_duration available for reading as output -samples. Also begins new time frame at clock_duration, so that clock time 0 in -the new time frame specifies the same clock as clock_duration in the old time -frame specified. Deltas can have been added slightly past clock_duration (up to -however many clocks there are in two output samples). */ -void blip_end_frame( blip_t*, unsigned int clock_duration ); - -/** Number of buffered samples available for reading. */ -int blip_samples_avail( const blip_t* ); - -/** Reads and removes at most 'count' samples and writes them to 'out'. If -'stereo' is true, writes output to every other element of 'out', allowing easy -interleaving of two buffers into a stereo sample stream. Outputs 16-bit signed -samples. Returns number of samples actually read. */ -int blip_read_samples( blip_t*, short out [], int count, int stereo ); - -/** Frees buffer. No effect if NULL is passed. */ -void blip_delete( blip_t* ); - - -/* Deprecated */ -typedef blip_t blip_buffer_t; - -#ifdef __cplusplus - } -#endif - -#endif diff --git a/res/licenses/blip_buf.txt b/res/licenses/blip_buf.txt deleted file mode 100644 index 5faba9d48..000000000 --- a/res/licenses/blip_buf.txt +++ /dev/null @@ -1,504 +0,0 @@ - GNU LESSER GENERAL PUBLIC LICENSE - Version 2.1, February 1999 - - Copyright (C) 1991, 1999 Free Software Foundation, Inc. - 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA - Everyone is permitted to copy and distribute verbatim copies - of this license document, but changing it is not allowed. - -[This is the first released version of the Lesser GPL. It also counts - as the successor of the GNU Library Public License, version 2, hence - the version number 2.1.] - - Preamble - - The licenses for most software are designed to take away your -freedom to share and change it. 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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 Lesser General Public License for more -details. You should have received a copy of the GNU Lesser General Public -License along with this module; if not, write to the Free Software Foundation, -Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ - -#if defined (BLARGG_TEST) && BLARGG_TEST - #include "blargg_test.h" -#endif - -/* Equivalent to ULONG_MAX >= 0xFFFFFFFF00000000. -Avoids constants that don't fit in 32 bits. */ -#if ULONG_MAX/0xFFFFFFFF > 0xFFFFFFFF - typedef unsigned long fixed_t; - enum { pre_shift = 32 }; - -#elif defined(ULLONG_MAX) - typedef unsigned long long fixed_t; - enum { pre_shift = 32 }; - -#else - typedef unsigned fixed_t; - enum { pre_shift = 0 }; - -#endif - -enum { time_bits = pre_shift + 20 }; - -static fixed_t const time_unit = (fixed_t) 1 << time_bits; - -enum { bass_shift = 9 }; /* affects high-pass filter breakpoint frequency */ -enum { end_frame_extra = 2 }; /* allows deltas slightly after frame length */ - -enum { half_width = 8 }; -enum { buf_extra = half_width*2 + end_frame_extra }; -enum { phase_bits = 5 }; -enum { phase_count = 1 << phase_bits }; -enum { delta_bits = 15 }; -enum { delta_unit = 1 << delta_bits }; -enum { frac_bits = time_bits - pre_shift }; - -/* We could eliminate avail and encode whole samples in offset, but that would -limit the total buffered samples to blip_max_frame. That could only be -increased by decreasing time_bits, which would reduce resample ratio accuracy. -*/ - -/** Sample buffer that resamples to output rate and accumulates samples -until they're read out */ -struct blip_t -{ - fixed_t factor; - fixed_t offset; - int avail; - int size; - int integrator; -}; - -typedef int buf_t; - -/* probably not totally portable */ -#define SAMPLES( buf ) ((buf_t*) ((buf) + 1)) - -/* Arithmetic (sign-preserving) right shift */ -#define ARITH_SHIFT( n, shift ) \ - ((n) >> (shift)) - -enum { max_sample = +32767 }; -enum { min_sample = -32768 }; - -#define CLAMP( n ) \ - {\ - if ( (short) n != n )\ - n = ARITH_SHIFT( n, 16 ) ^ max_sample;\ - } - -static void check_assumptions( void ) -{ - int n; - - #if INT_MAX < 0x7FFFFFFF || UINT_MAX < 0xFFFFFFFF - #error "int must be at least 32 bits" - #endif - - assert( (-3 >> 1) == -2 ); /* right shift must preserve sign */ - - n = max_sample * 2; - CLAMP( n ); - assert( n == max_sample ); - - n = min_sample * 2; - CLAMP( n ); - assert( n == min_sample ); - - assert( blip_max_ratio <= time_unit ); - assert( blip_max_frame <= (fixed_t) -1 >> time_bits ); -} - -blip_t* blip_new( int size ) -{ - blip_t* m; - assert( size >= 0 ); - - m = (blip_t*) malloc( sizeof *m + (size + buf_extra) * sizeof (buf_t) ); - if ( m ) - { - m->factor = time_unit / blip_max_ratio; - m->size = size; - blip_clear( m ); - check_assumptions(); - } - return m; -} - -void blip_delete( blip_t* m ) -{ - if ( m != NULL ) - { - /* Clear fields in case user tries to use after freeing */ - memset( m, 0, sizeof *m ); - free( m ); - } -} - -void blip_set_rates( blip_t* m, double clock_rate, double sample_rate ) -{ - double factor = time_unit * sample_rate / clock_rate; - m->factor = (fixed_t) factor; - - /* Fails if clock_rate exceeds maximum, relative to sample_rate */ - assert( 0 <= factor - m->factor && factor - m->factor < 1 ); - - /* Avoid requiring math.h. Equivalent to - m->factor = (int) ceil( factor ) */ - if ( m->factor < factor ) - m->factor++; - - /* At this point, factor is most likely rounded up, but could still - have been rounded down in the floating-point calculation. */ -} - -void blip_clear( blip_t* m ) -{ - /* We could set offset to 0, factor/2, or factor-1. 0 is suitable if - factor is rounded up. factor-1 is suitable if factor is rounded down. - Since we don't know rounding direction, factor/2 accommodates either, - with the slight loss of showing an error in half the time. Since for - a 64-bit factor this is years, the halving isn't a problem. */ - - m->offset = m->factor / 2; - m->avail = 0; - m->integrator = 0; - memset( SAMPLES( m ), 0, (m->size + buf_extra) * sizeof (buf_t) ); -} - -int blip_clocks_needed( const blip_t* m, int samples ) -{ - fixed_t needed; - - /* Fails if buffer can't hold that many more samples */ - assert( samples >= 0 && m->avail + samples <= m->size ); - - needed = (fixed_t) samples * time_unit; - if ( needed < m->offset ) - return 0; - - return (needed - m->offset + m->factor - 1) / m->factor; -} - -void blip_end_frame( blip_t* m, unsigned t ) -{ - fixed_t off = t * m->factor + m->offset; - m->avail += off >> time_bits; - m->offset = off & (time_unit - 1); - - /* Fails if buffer size was exceeded */ - assert( m->avail <= m->size ); -} - -int blip_samples_avail( const blip_t* m ) -{ - return m->avail; -} - -static void remove_samples( blip_t* m, int count ) -{ - buf_t* buf = SAMPLES( m ); - int remain = m->avail + buf_extra - count; - m->avail -= count; - - memmove( &buf [0], &buf [count], remain * sizeof buf [0] ); - memset( &buf [remain], 0, count * sizeof buf [0] ); -} - -int blip_read_samples( blip_t* m, short out [], int count, int stereo ) -{ - assert( count >= 0 ); - - if ( count > m->avail ) - count = m->avail; - - if ( count ) - { - int const step = stereo ? 2 : 1; - buf_t const* in = SAMPLES( m ); - buf_t const* end = in + count; - int sum = m->integrator; - do - { - /* Eliminate fraction */ - int s = ARITH_SHIFT( sum, delta_bits ); - - sum += *in++; - - CLAMP( s ); - - *out = s; - out += step; - - /* High-pass filter */ - sum -= s << (delta_bits - bass_shift); - } - while ( in != end ); - m->integrator = sum; - - remove_samples( m, count ); - } - - return count; -} - -/* Things that didn't help performance on x86: - __attribute__((aligned(128))) - #define short int - restrict -*/ - -/* Sinc_Generator( 0.9, 0.55, 4.5 ) */ -static short const bl_step [phase_count + 1] [half_width] = -{ -{ 43, -115, 350, -488, 1136, -914, 5861,21022}, -{ 44, -118, 348, -473, 1076, -799, 5274,21001}, -{ 45, -121, 344, -454, 1011, -677, 4706,20936}, -{ 46, -122, 336, -431, 942, -549, 4156,20829}, -{ 47, -123, 327, -404, 868, -418, 3629,20679}, -{ 47, -122, 316, -375, 792, -285, 3124,20488}, -{ 47, -120, 303, -344, 714, -151, 2644,20256}, -{ 46, -117, 289, -310, 634, -17, 2188,19985}, -{ 46, -114, 273, -275, 553, 117, 1758,19675}, -{ 44, -108, 255, -237, 471, 247, 1356,19327}, -{ 43, -103, 237, -199, 390, 373, 981,18944}, -{ 42, -98, 218, -160, 310, 495, 633,18527}, -{ 40, -91, 198, -121, 231, 611, 314,18078}, -{ 38, -84, 178, -81, 153, 722, 22,17599}, -{ 36, -76, 157, -43, 80, 824, -241,17092}, -{ 34, -68, 135, -3, 8, 919, -476,16558}, -{ 32, -61, 115, 34, -60, 1006, -683,16001}, -{ 29, -52, 94, 70, -123, 1083, -862,15422}, -{ 27, -44, 73, 106, -184, 1152,-1015,14824}, -{ 25, -36, 53, 139, -239, 1211,-1142,14210}, -{ 22, -27, 34, 170, -290, 1261,-1244,13582}, -{ 20, -20, 16, 199, -335, 1301,-1322,12942}, -{ 18, -12, -3, 226, -375, 1331,-1376,12293}, -{ 15, -4, -19, 250, -410, 1351,-1408,11638}, -{ 13, 3, -35, 272, -439, 1361,-1419,10979}, -{ 11, 9, -49, 292, -464, 1362,-1410,10319}, -{ 9, 16, -63, 309, -483, 1354,-1383, 9660}, -{ 7, 22, -75, 322, -496, 1337,-1339, 9005}, -{ 6, 26, -85, 333, -504, 1312,-1280, 8355}, -{ 4, 31, -94, 341, -507, 1278,-1205, 7713}, -{ 3, 35, -102, 347, -506, 1238,-1119, 7082}, -{ 1, 40, -110, 350, -499, 1190,-1021, 6464}, -{ 0, 43, -115, 350, -488, 1136, -914, 5861} -}; - -/* Shifting by pre_shift allows calculation using unsigned int rather than -possibly-wider fixed_t. On 32-bit platforms, this is likely more efficient. -And by having pre_shift 32, a 32-bit platform can easily do the shift by -simply ignoring the low half. */ - -void blip_add_delta( blip_t* m, unsigned time, int delta ) -{ - unsigned fixed = (unsigned) ((time * m->factor + m->offset) >> pre_shift); - buf_t* out = SAMPLES( m ) + m->avail + (fixed >> frac_bits); - - int const phase_shift = frac_bits - phase_bits; - int phase = fixed >> phase_shift & (phase_count - 1); - short const* in = bl_step [phase]; - short const* rev = bl_step [phase_count - phase]; - - int interp = fixed >> (phase_shift - delta_bits) & (delta_unit - 1); - int delta2 = (delta * interp) >> delta_bits; - delta -= delta2; - - /* Fails if buffer size was exceeded */ - assert( out <= &SAMPLES( m ) [m->size + end_frame_extra] ); - - out [0] += in[0]*delta + in[half_width+0]*delta2; - out [1] += in[1]*delta + in[half_width+1]*delta2; - out [2] += in[2]*delta + in[half_width+2]*delta2; - out [3] += in[3]*delta + in[half_width+3]*delta2; - out [4] += in[4]*delta + in[half_width+4]*delta2; - out [5] += in[5]*delta + in[half_width+5]*delta2; - out [6] += in[6]*delta + in[half_width+6]*delta2; - out [7] += in[7]*delta + in[half_width+7]*delta2; - - in = rev; - out [ 8] += in[7]*delta + in[7-half_width]*delta2; - out [ 9] += in[6]*delta + in[6-half_width]*delta2; - out [10] += in[5]*delta + in[5-half_width]*delta2; - out [11] += in[4]*delta + in[4-half_width]*delta2; - out [12] += in[3]*delta + in[3-half_width]*delta2; - out [13] += in[2]*delta + in[2-half_width]*delta2; - out [14] += in[1]*delta + in[1-half_width]*delta2; - out [15] += in[0]*delta + in[0-half_width]*delta2; -} - -void blip_add_delta_fast( blip_t* m, unsigned time, int delta ) -{ - unsigned fixed = (unsigned) ((time * m->factor + m->offset) >> pre_shift); - buf_t* out = SAMPLES( m ) + m->avail + (fixed >> frac_bits); - - int interp = fixed >> (frac_bits - delta_bits) & (delta_unit - 1); - int delta2 = delta * interp; - - /* Fails if buffer size was exceeded */ - assert( out <= &SAMPLES( m ) [m->size + end_frame_extra] ); - - out [7] += delta * delta_unit - delta2; - out [8] += delta2; -} diff --git a/src/third-party/blip_buf/license.txt b/src/third-party/blip_buf/license.txt deleted file mode 100644 index 5faba9d48..000000000 --- a/src/third-party/blip_buf/license.txt +++ /dev/null @@ -1,504 +0,0 @@ - GNU LESSER GENERAL PUBLIC LICENSE - Version 2.1, February 1999 - - Copyright (C) 1991, 1999 Free Software Foundation, Inc. - 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA - Everyone is permitted to copy and distribute verbatim copies - of this license document, but changing it is not allowed. - -[This is the first released version of the Lesser GPL. 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