mirror of
https://github.com/hrydgard/ppsspp.git
synced 2026-11-01 12:07:31 +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>
94 lines
2.5 KiB
C
94 lines
2.5 KiB
C
/*
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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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#include "mathops.h"
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#include "rnd_avg.h"
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#include "libavutil/intreadwrite.h"
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#ifndef BIT_DEPTH
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#define BIT_DEPTH 8
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#endif
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#ifdef AVCODEC_BIT_DEPTH_TEMPLATE_C
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# undef pixel
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# undef pixel2
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# undef pixel4
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# undef dctcoef
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# undef INIT_CLIP
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# undef no_rnd_avg_pixel4
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# undef rnd_avg_pixel4
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# undef AV_RN2P
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# undef AV_RN4P
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# undef AV_RN4PA
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# undef AV_WN2P
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# undef AV_WN4P
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# undef AV_WN4PA
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# undef CLIP
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# undef FUNC
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# undef FUNCC
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# undef av_clip_pixel
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# undef PIXEL_SPLAT_X4
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#else
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# define AVCODEC_BIT_DEPTH_TEMPLATE_C
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#endif
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#if BIT_DEPTH > 8
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# define pixel uint16_t
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# define pixel2 uint32_t
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# define pixel4 uint64_t
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# define dctcoef int32_t
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# define INIT_CLIP
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# define no_rnd_avg_pixel4 no_rnd_avg64
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# define rnd_avg_pixel4 rnd_avg64
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# define AV_RN2P AV_RN32
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# define AV_RN4P AV_RN64
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# define AV_RN4PA AV_RN64A
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# define AV_WN2P AV_WN32
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# define AV_WN4P AV_WN64
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# define AV_WN4PA AV_WN64A
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# define PIXEL_SPLAT_X4(x) ((x)*0x0001000100010001ULL)
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# define av_clip_pixel(a) av_clip_uintp2(a, BIT_DEPTH)
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# define CLIP(a) av_clip_uintp2(a, BIT_DEPTH)
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#else
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# define pixel uint8_t
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# define pixel2 uint16_t
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# define pixel4 uint32_t
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# define dctcoef int16_t
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# define INIT_CLIP
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# define no_rnd_avg_pixel4 no_rnd_avg32
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# define rnd_avg_pixel4 rnd_avg32
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# define AV_RN2P AV_RN16
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# define AV_RN4P AV_RN32
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# define AV_RN4PA AV_RN32A
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# define AV_WN2P AV_WN16
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# define AV_WN4P AV_WN32
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# define AV_WN4PA AV_WN32A
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# define PIXEL_SPLAT_X4(x) ((x)*0x01010101U)
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# define av_clip_pixel(a) av_clip_uint8(a)
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# define CLIP(a) av_clip_uint8(a)
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#endif
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#define FUNC3(a, b, c) a ## _ ## b ## c
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#define FUNC2(a, b, c) FUNC3(a, b, c)
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#define FUNC(a) FUNC2(a, BIT_DEPTH,)
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#define FUNCC(a) FUNC2(a, BIT_DEPTH, _c)
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