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>
104 lines
3.3 KiB
C
104 lines
3.3 KiB
C
/*
|
|
* Ratecontrol
|
|
* Copyright (c) 2000, 2001, 2002 Fabrice Bellard
|
|
* Copyright (c) 2002-2004 Michael Niedermayer
|
|
*
|
|
* This file is part of FFmpeg.
|
|
*
|
|
* FFmpeg is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Lesser General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2.1 of the License, or (at your option) any later version.
|
|
*
|
|
* FFmpeg is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public
|
|
* License along with FFmpeg; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
|
*/
|
|
|
|
#ifndef AVCODEC_RATECONTROL_H
|
|
#define AVCODEC_RATECONTROL_H
|
|
|
|
/**
|
|
* @file
|
|
* ratecontrol header.
|
|
*/
|
|
|
|
#include <stdio.h>
|
|
#include <stdint.h>
|
|
#include "libavutil/eval.h"
|
|
|
|
typedef struct Predictor{
|
|
double coeff;
|
|
double count;
|
|
double decay;
|
|
} Predictor;
|
|
|
|
typedef struct RateControlEntry{
|
|
int pict_type;
|
|
float qscale;
|
|
int mv_bits;
|
|
int i_tex_bits;
|
|
int p_tex_bits;
|
|
int misc_bits;
|
|
int header_bits;
|
|
uint64_t expected_bits;
|
|
int new_pict_type;
|
|
float new_qscale;
|
|
int64_t mc_mb_var_sum;
|
|
int64_t mb_var_sum;
|
|
int i_count;
|
|
int skip_count;
|
|
int f_code;
|
|
int b_code;
|
|
}RateControlEntry;
|
|
|
|
/**
|
|
* rate control context.
|
|
*/
|
|
typedef struct RateControlContext{
|
|
int num_entries; ///< number of RateControlEntries
|
|
RateControlEntry *entry;
|
|
double buffer_index; ///< amount of bits in the video/audio buffer
|
|
Predictor pred[5];
|
|
double short_term_qsum; ///< sum of recent qscales
|
|
double short_term_qcount; ///< count of recent qscales
|
|
double pass1_rc_eq_output_sum;///< sum of the output of the rc equation, this is used for normalization
|
|
double pass1_wanted_bits; ///< bits which should have been outputed by the pass1 code (including complexity init)
|
|
double last_qscale;
|
|
double last_qscale_for[5]; ///< last qscale for a specific pict type, used for max_diff & ipb factor stuff
|
|
int64_t last_mc_mb_var_sum;
|
|
int64_t last_mb_var_sum;
|
|
uint64_t i_cplx_sum[5];
|
|
uint64_t p_cplx_sum[5];
|
|
uint64_t mv_bits_sum[5];
|
|
uint64_t qscale_sum[5];
|
|
int frame_count[5];
|
|
int last_non_b_pict_type;
|
|
|
|
void *non_lavc_opaque; ///< context for non lavc rc code (for example xvid)
|
|
float dry_run_qscale; ///< for xvid rc
|
|
int last_picture_number; ///< for xvid rc
|
|
AVExpr * rc_eq_eval;
|
|
}RateControlContext;
|
|
|
|
struct MpegEncContext;
|
|
|
|
/* rate control */
|
|
int ff_rate_control_init(struct MpegEncContext *s);
|
|
float ff_rate_estimate_qscale(struct MpegEncContext *s, int dry_run);
|
|
void ff_write_pass1_stats(struct MpegEncContext *s);
|
|
void ff_rate_control_uninit(struct MpegEncContext *s);
|
|
int ff_vbv_update(struct MpegEncContext *s, int frame_size);
|
|
void ff_get_2pass_fcode(struct MpegEncContext *s);
|
|
|
|
int ff_xvid_rate_control_init(struct MpegEncContext *s);
|
|
void ff_xvid_rate_control_uninit(struct MpegEncContext *s);
|
|
float ff_xvid_rate_estimate_qscale(struct MpegEncContext *s, int dry_run);
|
|
|
|
#endif /* AVCODEC_RATECONTROL_H */
|