mirror of
https://github.com/hrydgard/ppsspp.git
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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>
61 lines
2.3 KiB
C
61 lines
2.3 KiB
C
/*
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* AVCodecParser prototypes and definitions
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* Copyright (c) 2003 Fabrice Bellard
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* Copyright (c) 2003 Michael Niedermayer
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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_PARSER_H
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#define AVCODEC_PARSER_H
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#include "avcodec.h"
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typedef struct ParseContext{
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uint8_t *buffer;
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int index;
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int last_index;
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unsigned int buffer_size;
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uint32_t state; ///< contains the last few bytes in MSB order
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int frame_start_found;
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int overread; ///< the number of bytes which where irreversibly read from the next frame
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int overread_index; ///< the index into ParseContext.buffer of the overread bytes
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uint64_t state64; ///< contains the last 8 bytes in MSB order
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} ParseContext;
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#define END_NOT_FOUND (-100)
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/**
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* Combine the (truncated) bitstream to a complete frame.
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* @return -1 if no complete frame could be created,
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* AVERROR(ENOMEM) if there was a memory allocation error
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*/
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int ff_combine_frame(ParseContext *pc, int next, const uint8_t **buf, int *buf_size);
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int ff_mpeg4video_split(AVCodecContext *avctx, const uint8_t *buf,
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int buf_size);
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void ff_parse_close(AVCodecParserContext *s);
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/**
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* Fetch timestamps for a specific byte within the current access unit.
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* @param off byte position within the access unit
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* @param remove Found timestamps will be removed if set to 1, kept if set to 0.
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* @param fuzzy Only use found value if it is more informative than what we already have
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*/
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void ff_fetch_timestamp(AVCodecParserContext *s, int off, int remove, int fuzzy);
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#endif /* AVCODEC_PARSER_H */
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