mirror of
https://github.com/hrydgard/ppsspp.git
synced 2026-11-01 20:18:15 +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>
87 lines
3.4 KiB
C
87 lines
3.4 KiB
C
/*
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* MPEG-4 Parametric Stereo definitions and declarations
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* Copyright (c) 2010 Alex Converse <alex.converse@gmail.com>
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg 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 GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef AVCODEC_AACPS_H
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#define AVCODEC_AACPS_H
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#include <stdint.h>
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#include "aacpsdsp.h"
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#include "avcodec.h"
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#include "get_bits.h"
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#define PS_MAX_NUM_ENV 5
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#define PS_MAX_NR_IIDICC 34
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#define PS_MAX_NR_IPDOPD 17
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#define PS_MAX_SSB 91
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#define PS_MAX_AP_BANDS 50
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#define PS_QMF_TIME_SLOTS 32
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#define PS_MAX_DELAY 14
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#define PS_AP_LINKS 3
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#define PS_MAX_AP_DELAY 5
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typedef struct PSContext {
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int start;
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int enable_iid;
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int iid_quant;
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int nr_iid_par;
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int nr_ipdopd_par;
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int enable_icc;
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int icc_mode;
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int nr_icc_par;
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int enable_ext;
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int frame_class;
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int num_env_old;
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int num_env;
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int enable_ipdopd;
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int border_position[PS_MAX_NUM_ENV+1];
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int8_t iid_par[PS_MAX_NUM_ENV][PS_MAX_NR_IIDICC]; ///< Inter-channel Intensity Difference Parameters
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int8_t icc_par[PS_MAX_NUM_ENV][PS_MAX_NR_IIDICC]; ///< Inter-Channel Coherence Parameters
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/* ipd/opd is iid/icc sized so that the same functions can handle both */
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int8_t ipd_par[PS_MAX_NUM_ENV][PS_MAX_NR_IIDICC]; ///< Inter-channel Phase Difference Parameters
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int8_t opd_par[PS_MAX_NUM_ENV][PS_MAX_NR_IIDICC]; ///< Overall Phase Difference Parameters
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int is34bands;
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int is34bands_old;
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DECLARE_ALIGNED(16, INTFLOAT, in_buf)[5][44][2];
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DECLARE_ALIGNED(16, INTFLOAT, delay)[PS_MAX_SSB][PS_QMF_TIME_SLOTS + PS_MAX_DELAY][2];
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DECLARE_ALIGNED(16, INTFLOAT, ap_delay)[PS_MAX_AP_BANDS][PS_AP_LINKS][PS_QMF_TIME_SLOTS + PS_MAX_AP_DELAY][2];
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DECLARE_ALIGNED(16, INTFLOAT, peak_decay_nrg)[34];
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DECLARE_ALIGNED(16, INTFLOAT, power_smooth)[34];
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DECLARE_ALIGNED(16, INTFLOAT, peak_decay_diff_smooth)[34];
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DECLARE_ALIGNED(16, INTFLOAT, H11)[2][PS_MAX_NUM_ENV+1][PS_MAX_NR_IIDICC];
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DECLARE_ALIGNED(16, INTFLOAT, H12)[2][PS_MAX_NUM_ENV+1][PS_MAX_NR_IIDICC];
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DECLARE_ALIGNED(16, INTFLOAT, H21)[2][PS_MAX_NUM_ENV+1][PS_MAX_NR_IIDICC];
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DECLARE_ALIGNED(16, INTFLOAT, H22)[2][PS_MAX_NUM_ENV+1][PS_MAX_NR_IIDICC];
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DECLARE_ALIGNED(16, INTFLOAT, Lbuf)[91][32][2];
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DECLARE_ALIGNED(16, INTFLOAT, Rbuf)[91][32][2];
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int8_t opd_hist[PS_MAX_NR_IIDICC];
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int8_t ipd_hist[PS_MAX_NR_IIDICC];
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PSDSPContext dsp;
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} PSContext;
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void AAC_RENAME(ff_ps_init)(void);
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void AAC_RENAME(ff_ps_ctx_init)(PSContext *ps);
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int AAC_RENAME(ff_ps_read_data)(AVCodecContext *avctx, GetBitContext *gb, PSContext *ps, int bits_left);
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int AAC_RENAME(ff_ps_apply)(AVCodecContext *avctx, PSContext *ps, INTFLOAT L[2][38][64], INTFLOAT R[2][38][64], int top);
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#endif /* AVCODEC_AACPS_H */
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