mirror of
https://github.com/hrydgard/ppsspp.git
synced 2026-11-02 20:42:29 +01:00
Henrik RydgårdandClaude Opus 5.5
d0e3141f43
The ffmpeg submodule held prebuilt libraries for every platform next to the sources (about 1.5 GB checked out), and nothing uses those any more. Only the needed sources are copied in, from the submodule's commit, along with every header and template they include. The path is new, so checking out commits on either side of this works. It's also cut down to what PPSSPP uses: the H.264, AAC, MP3, ATRAC3 and ATRAC3+ decoders, the H.264 parser, the demuxers as before, and the FFV1 encoder, AVI muxer and file protocol for AVI dumping. config.h takes its CONFIG_ values from FFmpeg 3.0.2's own configure run with just those enabled. The raw H.264 demuxer stays even though nothing opens raw H.264: probing PSMF data uses it to identify the video stream's codec, which otherwise comes out as none. On top of that: - The files nothing links (configure would build them, but they're never pulled out of the static library, going by the GCC link map) are left out: mostly libavutil's crypto and hashing and the alternative DCT/IDCT/FFT versions. - libswresample isn't built, now that nothing uses it. - The H.264 decoder only does 8-bit video, which is all the PSP has. The SPS parser rejects any other bit depth, and the DSP files no longer build their 9- to 16-bit variants, which the linker kept because the init functions pick one by bit depth at run time. That's 160 files to compile instead of 277, and 391 of FFmpeg's vendored, about 5.8 MB. The README in ext/ffmpeg has what was done, the PPSSPP patches in the copy, how to add a component, and the tradeoffs. Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
187 lines
6.7 KiB
C
187 lines
6.7 KiB
C
/*
|
|
* This file is part of FFmpeg.
|
|
*
|
|
* FFmpeg 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.
|
|
*
|
|
* FFmpeg 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 FFmpeg; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
|
*/
|
|
|
|
#ifndef AVUTIL_FLOAT_DSP_H
|
|
#define AVUTIL_FLOAT_DSP_H
|
|
|
|
#include "config.h"
|
|
|
|
typedef struct AVFloatDSPContext {
|
|
/**
|
|
* Calculate the entry wise product of two vectors of floats and store the result in
|
|
* a vector of floats.
|
|
*
|
|
* @param dst output vector
|
|
* constraints: 32-byte aligned
|
|
* @param src0 first input vector
|
|
* constraints: 32-byte aligned
|
|
* @param src1 second input vector
|
|
* constraints: 32-byte aligned
|
|
* @param len number of elements in the input
|
|
* constraints: multiple of 16
|
|
*/
|
|
void (*vector_fmul)(float *dst, const float *src0, const float *src1,
|
|
int len);
|
|
|
|
/**
|
|
* Multiply a vector of floats by a scalar float and add to
|
|
* destination vector. Source and destination vectors must
|
|
* overlap exactly or not at all.
|
|
*
|
|
* @param dst result vector
|
|
* constraints: 32-byte aligned
|
|
* @param src input vector
|
|
* constraints: 32-byte aligned
|
|
* @param mul scalar value
|
|
* @param len length of vector
|
|
* constraints: multiple of 16
|
|
*/
|
|
void (*vector_fmac_scalar)(float *dst, const float *src, float mul,
|
|
int len);
|
|
|
|
/**
|
|
* Multiply a vector of floats by a scalar float. Source and
|
|
* destination vectors must overlap exactly or not at all.
|
|
*
|
|
* @param dst result vector
|
|
* constraints: 16-byte aligned
|
|
* @param src input vector
|
|
* constraints: 16-byte aligned
|
|
* @param mul scalar value
|
|
* @param len length of vector
|
|
* constraints: multiple of 4
|
|
*/
|
|
void (*vector_fmul_scalar)(float *dst, const float *src, float mul,
|
|
int len);
|
|
|
|
/**
|
|
* Multiply a vector of double by a scalar double. Source and
|
|
* destination vectors must overlap exactly or not at all.
|
|
*
|
|
* @param dst result vector
|
|
* constraints: 32-byte aligned
|
|
* @param src input vector
|
|
* constraints: 32-byte aligned
|
|
* @param mul scalar value
|
|
* @param len length of vector
|
|
* constraints: multiple of 8
|
|
*/
|
|
void (*vector_dmul_scalar)(double *dst, const double *src, double mul,
|
|
int len);
|
|
|
|
/**
|
|
* Overlap/add with window function.
|
|
* Used primarily by MDCT-based audio codecs.
|
|
* Source and destination vectors must overlap exactly or not at all.
|
|
*
|
|
* @param dst result vector
|
|
* constraints: 16-byte aligned
|
|
* @param src0 first source vector
|
|
* constraints: 16-byte aligned
|
|
* @param src1 second source vector
|
|
* constraints: 16-byte aligned
|
|
* @param win half-window vector
|
|
* constraints: 16-byte aligned
|
|
* @param len length of vector
|
|
* constraints: multiple of 4
|
|
*/
|
|
void (*vector_fmul_window)(float *dst, const float *src0,
|
|
const float *src1, const float *win, int len);
|
|
|
|
/**
|
|
* Calculate the entry wise product of two vectors of floats, add a third vector of
|
|
* floats and store the result in a vector of floats.
|
|
*
|
|
* @param dst output vector
|
|
* constraints: 32-byte aligned
|
|
* @param src0 first input vector
|
|
* constraints: 32-byte aligned
|
|
* @param src1 second input vector
|
|
* constraints: 32-byte aligned
|
|
* @param src2 third input vector
|
|
* constraints: 32-byte aligned
|
|
* @param len number of elements in the input
|
|
* constraints: multiple of 16
|
|
*/
|
|
void (*vector_fmul_add)(float *dst, const float *src0, const float *src1,
|
|
const float *src2, int len);
|
|
|
|
/**
|
|
* Calculate the entry wise product of two vectors of floats, and store the result
|
|
* in a vector of floats. The second vector of floats is iterated over
|
|
* in reverse order.
|
|
*
|
|
* @param dst output vector
|
|
* constraints: 32-byte aligned
|
|
* @param src0 first input vector
|
|
* constraints: 32-byte aligned
|
|
* @param src1 second input vector
|
|
* constraints: 32-byte aligned
|
|
* @param len number of elements in the input
|
|
* constraints: multiple of 16
|
|
*/
|
|
void (*vector_fmul_reverse)(float *dst, const float *src0,
|
|
const float *src1, int len);
|
|
|
|
/**
|
|
* Calculate the sum and difference of two vectors of floats.
|
|
*
|
|
* @param v1 first input vector, sum output, 16-byte aligned
|
|
* @param v2 second input vector, difference output, 16-byte aligned
|
|
* @param len length of vectors, multiple of 4
|
|
*/
|
|
void (*butterflies_float)(float *av_restrict v1, float *av_restrict v2, int len);
|
|
|
|
/**
|
|
* Calculate the scalar product of two vectors of floats.
|
|
*
|
|
* @param v1 first vector, 16-byte aligned
|
|
* @param v2 second vector, 16-byte aligned
|
|
* @param len length of vectors, multiple of 4
|
|
*
|
|
* @return sum of elementwise products
|
|
*/
|
|
float (*scalarproduct_float)(const float *v1, const float *v2, int len);
|
|
} AVFloatDSPContext;
|
|
|
|
/**
|
|
* Return the scalar product of two vectors.
|
|
*
|
|
* @param v1 first input vector
|
|
* @param v2 first input vector
|
|
* @param len number of elements
|
|
*
|
|
* @return sum of elementwise products
|
|
*/
|
|
float avpriv_scalarproduct_float_c(const float *v1, const float *v2, int len);
|
|
|
|
void ff_float_dsp_init_aarch64(AVFloatDSPContext *fdsp);
|
|
void ff_float_dsp_init_arm(AVFloatDSPContext *fdsp);
|
|
void ff_float_dsp_init_ppc(AVFloatDSPContext *fdsp, int strict);
|
|
void ff_float_dsp_init_x86(AVFloatDSPContext *fdsp);
|
|
void ff_float_dsp_init_mips(AVFloatDSPContext *fdsp);
|
|
|
|
/**
|
|
* Allocate a float DSP context.
|
|
*
|
|
* @param strict setting to non-zero avoids using functions which may not be IEEE-754 compliant
|
|
*/
|
|
AVFloatDSPContext *avpriv_float_dsp_alloc(int strict);
|
|
|
|
#endif /* AVUTIL_FLOAT_DSP_H */
|