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>
143 lines
4.8 KiB
C
143 lines
4.8 KiB
C
/*
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* Mpeg video formats-related defines and utility functions
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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_MPEGUTILS_H
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#define AVCODEC_MPEGUTILS_H
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#include <stdint.h>
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#include "libavutil/frame.h"
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#include "avcodec.h"
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#include "version.h"
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/**
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* Return value for header parsers if frame is not coded.
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* */
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#define FRAME_SKIPPED 100
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/* picture type */
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#define PICT_TOP_FIELD 1
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#define PICT_BOTTOM_FIELD 2
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#define PICT_FRAME 3
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/**
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* Value of Picture.reference when Picture is not a reference picture, but
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* is held for delayed output.
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*/
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#define DELAYED_PIC_REF 4
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#define MAX_MB_BYTES (30 * 16 * 16 * 3 / 8 + 120)
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#define MAX_FCODE 7
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/* MB types */
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#if !FF_API_MB_TYPE
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#define MB_TYPE_INTRA4x4 (1 << 0)
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#define MB_TYPE_INTRA16x16 (1 << 1) // FIXME H.264-specific
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#define MB_TYPE_INTRA_PCM (1 << 2) // FIXME H.264-specific
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#define MB_TYPE_16x16 (1 << 3)
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#define MB_TYPE_16x8 (1 << 4)
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#define MB_TYPE_8x16 (1 << 5)
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#define MB_TYPE_8x8 (1 << 6)
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#define MB_TYPE_INTERLACED (1 << 7)
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#define MB_TYPE_DIRECT2 (1 << 8) // FIXME
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#define MB_TYPE_ACPRED (1 << 9)
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#define MB_TYPE_GMC (1 << 10)
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#define MB_TYPE_SKIP (1 << 11)
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#define MB_TYPE_P0L0 (1 << 12)
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#define MB_TYPE_P1L0 (1 << 13)
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#define MB_TYPE_P0L1 (1 << 14)
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#define MB_TYPE_P1L1 (1 << 15)
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#define MB_TYPE_L0 (MB_TYPE_P0L0 | MB_TYPE_P1L0)
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#define MB_TYPE_L1 (MB_TYPE_P0L1 | MB_TYPE_P1L1)
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#define MB_TYPE_L0L1 (MB_TYPE_L0 | MB_TYPE_L1)
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#define MB_TYPE_QUANT (1 << 16)
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#define MB_TYPE_CBP (1 << 17)
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#endif
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#define MB_TYPE_INTRA MB_TYPE_INTRA4x4 // default mb_type if there is just one type
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#define IS_INTRA4x4(a) ((a) & MB_TYPE_INTRA4x4)
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#define IS_INTRA16x16(a) ((a) & MB_TYPE_INTRA16x16)
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#define IS_PCM(a) ((a) & MB_TYPE_INTRA_PCM)
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#define IS_INTRA(a) ((a) & 7)
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#define IS_INTER(a) ((a) & (MB_TYPE_16x16 | MB_TYPE_16x8 | \
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MB_TYPE_8x16 | MB_TYPE_8x8))
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#define IS_SKIP(a) ((a) & MB_TYPE_SKIP)
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#define IS_INTRA_PCM(a) ((a) & MB_TYPE_INTRA_PCM)
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#define IS_INTERLACED(a) ((a) & MB_TYPE_INTERLACED)
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#define IS_DIRECT(a) ((a) & MB_TYPE_DIRECT2)
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#define IS_GMC(a) ((a) & MB_TYPE_GMC)
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#define IS_16X16(a) ((a) & MB_TYPE_16x16)
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#define IS_16X8(a) ((a) & MB_TYPE_16x8)
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#define IS_8X16(a) ((a) & MB_TYPE_8x16)
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#define IS_8X8(a) ((a) & MB_TYPE_8x8)
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#define IS_SUB_8X8(a) ((a) & MB_TYPE_16x16) // note reused
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#define IS_SUB_8X4(a) ((a) & MB_TYPE_16x8) // note reused
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#define IS_SUB_4X8(a) ((a) & MB_TYPE_8x16) // note reused
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#define IS_SUB_4X4(a) ((a) & MB_TYPE_8x8) // note reused
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#define IS_ACPRED(a) ((a) & MB_TYPE_ACPRED)
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#define IS_QUANT(a) ((a) & MB_TYPE_QUANT)
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#define IS_DIR(a, part, list) ((a) & (MB_TYPE_P0L0 << ((part) + 2 * (list))))
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// does this mb use listX, note does not work if subMBs
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#define USES_LIST(a, list) ((a) & ((MB_TYPE_P0L0 | MB_TYPE_P1L0) << (2 * (list))))
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#define HAS_CBP(a) ((a) & MB_TYPE_CBP)
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/* MB types for encoding */
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#define CANDIDATE_MB_TYPE_INTRA (1 << 0)
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#define CANDIDATE_MB_TYPE_INTER (1 << 1)
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#define CANDIDATE_MB_TYPE_INTER4V (1 << 2)
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#define CANDIDATE_MB_TYPE_SKIPPED (1 << 3)
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#define CANDIDATE_MB_TYPE_DIRECT (1 << 4)
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#define CANDIDATE_MB_TYPE_FORWARD (1 << 5)
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#define CANDIDATE_MB_TYPE_BACKWARD (1 << 6)
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#define CANDIDATE_MB_TYPE_BIDIR (1 << 7)
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#define CANDIDATE_MB_TYPE_INTER_I (1 << 8)
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#define CANDIDATE_MB_TYPE_FORWARD_I (1 << 9)
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#define CANDIDATE_MB_TYPE_BACKWARD_I (1 << 10)
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#define CANDIDATE_MB_TYPE_BIDIR_I (1 << 11)
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#define CANDIDATE_MB_TYPE_DIRECT0 (1 << 12)
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#define INPLACE_OFFSET 16
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enum OutputFormat {
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FMT_MPEG1,
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FMT_H261,
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FMT_H263,
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FMT_MJPEG,
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};
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/**
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* Draw a horizontal band if supported.
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*
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* @param h is the normal height, this will be reduced automatically if needed
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*/
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void ff_draw_horiz_band(AVCodecContext *avctx, AVFrame *cur, AVFrame *last,
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int y, int h, int picture_structure, int first_field,
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int low_delay);
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#endif /* AVCODEC_MPEGUTILS_H */
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