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>
127 lines
5.3 KiB
C
127 lines
5.3 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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/**
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* @file
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* error code definitions
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*/
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#ifndef AVUTIL_ERROR_H
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#define AVUTIL_ERROR_H
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#include <errno.h>
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#include <stddef.h>
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/**
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* @addtogroup lavu_error
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*
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* @{
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*/
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/* error handling */
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#if EDOM > 0
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#define AVERROR(e) (-(e)) ///< Returns a negative error code from a POSIX error code, to return from library functions.
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#define AVUNERROR(e) (-(e)) ///< Returns a POSIX error code from a library function error return value.
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#else
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/* Some platforms have E* and errno already negated. */
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#define AVERROR(e) (e)
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#define AVUNERROR(e) (e)
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#endif
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#define FFERRTAG(a, b, c, d) (-(int)MKTAG(a, b, c, d))
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#define AVERROR_BSF_NOT_FOUND FFERRTAG(0xF8,'B','S','F') ///< Bitstream filter not found
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#define AVERROR_BUG FFERRTAG( 'B','U','G','!') ///< Internal bug, also see AVERROR_BUG2
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#define AVERROR_BUFFER_TOO_SMALL FFERRTAG( 'B','U','F','S') ///< Buffer too small
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#define AVERROR_DECODER_NOT_FOUND FFERRTAG(0xF8,'D','E','C') ///< Decoder not found
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#define AVERROR_DEMUXER_NOT_FOUND FFERRTAG(0xF8,'D','E','M') ///< Demuxer not found
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#define AVERROR_ENCODER_NOT_FOUND FFERRTAG(0xF8,'E','N','C') ///< Encoder not found
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#define AVERROR_EOF FFERRTAG( 'E','O','F',' ') ///< End of file
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#define AVERROR_EXIT FFERRTAG( 'E','X','I','T') ///< Immediate exit was requested; the called function should not be restarted
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#define AVERROR_EXTERNAL FFERRTAG( 'E','X','T',' ') ///< Generic error in an external library
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#define AVERROR_FILTER_NOT_FOUND FFERRTAG(0xF8,'F','I','L') ///< Filter not found
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#define AVERROR_INVALIDDATA FFERRTAG( 'I','N','D','A') ///< Invalid data found when processing input
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#define AVERROR_MUXER_NOT_FOUND FFERRTAG(0xF8,'M','U','X') ///< Muxer not found
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#define AVERROR_OPTION_NOT_FOUND FFERRTAG(0xF8,'O','P','T') ///< Option not found
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#define AVERROR_PATCHWELCOME FFERRTAG( 'P','A','W','E') ///< Not yet implemented in FFmpeg, patches welcome
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#define AVERROR_PROTOCOL_NOT_FOUND FFERRTAG(0xF8,'P','R','O') ///< Protocol not found
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#define AVERROR_STREAM_NOT_FOUND FFERRTAG(0xF8,'S','T','R') ///< Stream not found
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/**
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* This is semantically identical to AVERROR_BUG
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* it has been introduced in Libav after our AVERROR_BUG and with a modified value.
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*/
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#define AVERROR_BUG2 FFERRTAG( 'B','U','G',' ')
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#define AVERROR_UNKNOWN FFERRTAG( 'U','N','K','N') ///< Unknown error, typically from an external library
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#define AVERROR_EXPERIMENTAL (-0x2bb2afa8) ///< Requested feature is flagged experimental. Set strict_std_compliance if you really want to use it.
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#define AVERROR_INPUT_CHANGED (-0x636e6701) ///< Input changed between calls. Reconfiguration is required. (can be OR-ed with AVERROR_OUTPUT_CHANGED)
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#define AVERROR_OUTPUT_CHANGED (-0x636e6702) ///< Output changed between calls. Reconfiguration is required. (can be OR-ed with AVERROR_INPUT_CHANGED)
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/* HTTP & RTSP errors */
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#define AVERROR_HTTP_BAD_REQUEST FFERRTAG(0xF8,'4','0','0')
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#define AVERROR_HTTP_UNAUTHORIZED FFERRTAG(0xF8,'4','0','1')
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#define AVERROR_HTTP_FORBIDDEN FFERRTAG(0xF8,'4','0','3')
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#define AVERROR_HTTP_NOT_FOUND FFERRTAG(0xF8,'4','0','4')
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#define AVERROR_HTTP_OTHER_4XX FFERRTAG(0xF8,'4','X','X')
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#define AVERROR_HTTP_SERVER_ERROR FFERRTAG(0xF8,'5','X','X')
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#define AV_ERROR_MAX_STRING_SIZE 64
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/**
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* Put a description of the AVERROR code errnum in errbuf.
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* In case of failure the global variable errno is set to indicate the
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* error. Even in case of failure av_strerror() will print a generic
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* error message indicating the errnum provided to errbuf.
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*
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* @param errnum error code to describe
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* @param errbuf buffer to which description is written
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* @param errbuf_size the size in bytes of errbuf
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* @return 0 on success, a negative value if a description for errnum
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* cannot be found
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*/
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int av_strerror(int errnum, char *errbuf, size_t errbuf_size);
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/**
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* Fill the provided buffer with a string containing an error string
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* corresponding to the AVERROR code errnum.
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*
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* @param errbuf a buffer
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* @param errbuf_size size in bytes of errbuf
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* @param errnum error code to describe
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* @return the buffer in input, filled with the error description
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* @see av_strerror()
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*/
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static inline char *av_make_error_string(char *errbuf, size_t errbuf_size, int errnum)
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{
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av_strerror(errnum, errbuf, errbuf_size);
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return errbuf;
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}
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/**
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* Convenience macro, the return value should be used only directly in
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* function arguments but never stand-alone.
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*/
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#define av_err2str(errnum) \
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av_make_error_string((char[AV_ERROR_MAX_STRING_SIZE]){0}, AV_ERROR_MAX_STRING_SIZE, errnum)
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/**
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* @}
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*/
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#endif /* AVUTIL_ERROR_H */
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