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![Michael Niedermayer](/assets/img/avatar_default.png)
* commit '759001c534287a96dc96d1e274665feb7059145d': lavc decoders: work with refcounted frames. Anton Khirnov (1): lavc decoders: work with refcounted frames. Clément Bœsch (47): lavc/ansi: reset file lavc/ansi: re-do refcounted frame changes from Anton fraps: reset file lavc/fraps: switch to refcounted frames gifdec: reset file lavc/gifdec: switch to refcounted frames dsicinav: resolve conflicts smc: resolve conflicts zmbv: resolve conflicts rpza: resolve conflicts vble: resolve conflicts xxan: resolve conflicts targa: resolve conflicts vmnc: resolve conflicts utvideodec: resolve conflicts tscc: resolve conflicts ulti: resolve conflicts ffv1dec: resolve conflicts dnxhddec: resolve conflicts v210dec: resolve conflicts vp3: resolve conflicts vcr1: resolve conflicts v210x: resolve conflicts wavpack: resolve conflicts pngdec: fix compilation roqvideodec: resolve conflicts pictordec: resolve conflicts mdec: resolve conflicts tiertexseqv: resolve conflicts smacker: resolve conflicts vb: resolve conflicts vqavideo: resolve conflicts xl: resolve conflicts tmv: resolve conflicts vmdav: resolve conflicts truemotion1: resolve conflicts truemotion2: resolve conflicts lcldec: fix compilation libcelt_dec: fix compilation qdrw: fix compilation r210dec: fix compilation rl2: fix compilation wnv1: fix compilation yop: fix compilation tiff: resolve conflicts interplayvideo: fix compilation qpeg: resolve conflicts (FIXME/TESTME). Hendrik Leppkes (33): 012v: convert to refcounted frames 8bps: fix compilation 8svx: resolve conflicts 4xm: resolve conflicts aasc: resolve conflicts bfi: fix compilation aura: fix compilation alsdec: resolve conflicts avrndec: convert to refcounted frames avuidec: convert to refcounted frames bintext: convert to refcounted frames cavsdec: resolve conflicts brender_pix: convert to refcounted frames cinepak: resolve conflicts cinepak: avoid using AVFrame struct directly in private context cljr: fix compilation cpia: convert to refcounted frames cscd: resolve conflicts iff: resolve conflicts and do proper conversion to refcounted frames 4xm: fix reference frame handling cyuv: fix compilation dxa: fix compilation eacmv: fix compilation eamad: fix compilation eatgv: fix compilation escape124: remove unused variable. escape130: convert to refcounted frames evrcdec: convert to refcounted frames exr: convert to refcounted frames mvcdec: convert to refcounted frames paf: properly free the frame data on decode close sgirle: convert to refcounted frames lavfi/moviesrc: use refcounted frames Michael Niedermayer (56): Merge commit '759001c534287a96dc96d1e274665feb7059145d' resolve conflicts in headers motion_est: resolve conflict mpeg4videodec: fix conflicts dpcm conflict fix dpx: fix conflicts indeo3: resolve confilcts kmvc: resolve conflicts kmvc: resolve conflicts h264: resolve conflicts utils: resolve conflicts rawdec: resolve conflcits mpegvideo: resolve conflicts svq1enc: resolve conflicts mpegvideo: dont clear data, fix assertion failure on fate vsynth1 with threads pthreads: resolve conflicts frame_thread_encoder: simple compilefix not yet tested snow: update to buffer refs crytsalhd: fix compile dirac: switch to new API sonic: update to new API svq1: resolve conflict, update to new API ffwavesynth: update to new buffer API g729: update to new API indeo5: fix compile j2kdec: update to new buffer API linopencore-amr: fix compile libvorbisdec: update to new API loco: fix compile paf: update to new API proresdec: update to new API vp56: update to new api / resolve conflicts xface: convert to refcounted frames xan: fix compile&fate v408: update to ref counted buffers v308: update to ref counted buffers yuv4dec: update to ref counted buffers y41p: update to ref counted frames xbm: update to refcounted frames targa_y216: update to refcounted buffers qpeg: fix fate/crash cdxl: fix fate tscc: fix reget buffer useage targa_y216dec: fix style msmpeg4: fix fate h264: ref_picture() copy fields that have been lost too update_frame_pool: use channel field h264: Put code that prevents deadlocks back mpegvideo: dont allow last == current wmalossless: fix buffer ref messup ff_alloc_picture: free tables in case of dimension mismatches h264: fix null pointer dereference and assertion failure frame_thread_encoder: update to bufrefs ec: fix used arrays snowdec: fix off by 1 error in dimensions check h264: disallow single unpaired fields as references of frames Paul B Mahol (2): lavc/vima: convert to refcounted frames sanm: convert to refcounted frames Conflicts: libavcodec/4xm.c libavcodec/8bps.c libavcodec/8svx.c libavcodec/aasc.c libavcodec/alsdec.c libavcodec/anm.c libavcodec/ansi.c libavcodec/avs.c libavcodec/bethsoftvideo.c libavcodec/bfi.c libavcodec/c93.c libavcodec/cavsdec.c libavcodec/cdgraphics.c libavcodec/cinepak.c libavcodec/cljr.c libavcodec/cscd.c libavcodec/dnxhddec.c libavcodec/dpcm.c libavcodec/dpx.c libavcodec/dsicinav.c libavcodec/dvdec.c libavcodec/dxa.c libavcodec/eacmv.c libavcodec/eamad.c libavcodec/eatgq.c libavcodec/eatgv.c libavcodec/eatqi.c libavcodec/error_resilience.c libavcodec/escape124.c libavcodec/ffv1.h libavcodec/ffv1dec.c libavcodec/flicvideo.c libavcodec/fraps.c libavcodec/frwu.c libavcodec/g723_1.c libavcodec/gifdec.c libavcodec/h264.c libavcodec/h264.h libavcodec/h264_direct.c libavcodec/h264_loopfilter.c libavcodec/h264_refs.c libavcodec/huffyuvdec.c libavcodec/idcinvideo.c libavcodec/iff.c libavcodec/indeo2.c libavcodec/indeo3.c libavcodec/internal.h libavcodec/interplayvideo.c libavcodec/ivi_common.c libavcodec/jvdec.c libavcodec/kgv1dec.c libavcodec/kmvc.c libavcodec/lagarith.c libavcodec/libopenjpegdec.c libavcodec/mdec.c libavcodec/mimic.c libavcodec/mjpegbdec.c libavcodec/mjpegdec.c libavcodec/mmvideo.c libavcodec/motion_est.c libavcodec/motionpixels.c libavcodec/mpc7.c libavcodec/mpeg12.c libavcodec/mpeg4videodec.c libavcodec/mpegvideo.c libavcodec/mpegvideo.h libavcodec/msrle.c libavcodec/msvideo1.c libavcodec/nuv.c libavcodec/options_table.h libavcodec/pcx.c libavcodec/pictordec.c libavcodec/pngdec.c libavcodec/pnmdec.c libavcodec/pthread.c libavcodec/qpeg.c libavcodec/qtrle.c libavcodec/r210dec.c libavcodec/rawdec.c libavcodec/roqvideodec.c libavcodec/rpza.c libavcodec/smacker.c libavcodec/smc.c libavcodec/svq1dec.c libavcodec/svq1enc.c libavcodec/targa.c libavcodec/tiertexseqv.c libavcodec/tiff.c libavcodec/tmv.c libavcodec/truemotion1.c libavcodec/truemotion2.c libavcodec/tscc.c libavcodec/ulti.c libavcodec/utils.c libavcodec/utvideodec.c libavcodec/v210dec.c libavcodec/v210x.c libavcodec/vb.c libavcodec/vble.c libavcodec/vcr1.c libavcodec/vmdav.c libavcodec/vmnc.c libavcodec/vp3.c libavcodec/vp56.c libavcodec/vp56.h libavcodec/vp6.c libavcodec/vqavideo.c libavcodec/wavpack.c libavcodec/xl.c libavcodec/xxan.c libavcodec/zmbv.c Merged-by: Michael Niedermayer <michaelni@gmx.at>
485 lines
14 KiB
C
485 lines
14 KiB
C
/*
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* Wavesynth pseudo-codec
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* Copyright (c) 2011 Nicolas George
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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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#include "libavutil/intreadwrite.h"
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#include "libavutil/log.h"
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#include "avcodec.h"
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#include "internal.h"
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#define SIN_BITS 14
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#define WS_MAX_CHANNELS 32
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#define INF_TS 0x7FFFFFFFFFFFFFFF
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#define PINK_UNIT 128
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/*
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Format of the extradata and packets
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THIS INFORMATION IS NOT PART OF THE PUBLIC API OR ABI.
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IT CAN CHANGE WITHOUT NOTIFICATION.
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All numbers are in little endian.
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The codec extradata define a set of intervals with uniform content.
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Overlapping intervals are added together.
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extradata:
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uint32 number of intervals
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... intervals
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interval:
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int64 start timestamp; time_base must be 1/sample_rate;
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start timestamps must be in ascending order
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int64 end timestamp
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uint32 type
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uint32 channels mask
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... additional information, depends on type
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sine interval (type fourcc "SINE"):
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int32 start frequency, in 1/(1<<16) Hz
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int32 end frequency
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int32 start amplitude, 1<<16 is the full amplitude
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int32 end amplitude
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uint32 start phase, 0 is sin(0), 0x20000000 is sin(pi/2), etc.;
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n | (1<<31) means to match the phase of previous channel #n
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pink noise interval (type fourcc "NOIS"):
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int32 start amplitude
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int32 end amplitude
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The input packets encode the time and duration of the requested segment.
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packet:
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int64 start timestamp
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int32 duration
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*/
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enum ws_interval_type {
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WS_SINE = MKTAG('S','I','N','E'),
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WS_NOISE = MKTAG('N','O','I','S'),
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};
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struct ws_interval {
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int64_t ts_start, ts_end;
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uint64_t phi0, dphi0, ddphi;
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uint64_t amp0, damp;
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uint64_t phi, dphi, amp;
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uint32_t channels;
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enum ws_interval_type type;
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int next;
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};
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struct wavesynth_context {
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int64_t cur_ts;
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int64_t next_ts;
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int32_t *sin;
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AVFrame frame;
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struct ws_interval *inter;
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uint32_t dither_state;
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uint32_t pink_state;
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int32_t pink_pool[PINK_UNIT];
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unsigned pink_need, pink_pos;
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int nb_inter;
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int cur_inter;
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int next_inter;
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};
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#define LCG_A 1284865837
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#define LCG_C 4150755663
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#define LCG_AI 849225893 /* A*AI = 1 [mod 1<<32] */
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static uint32_t lcg_next(uint32_t *s)
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{
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*s = *s * LCG_A + LCG_C;
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return *s;
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}
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static void lcg_seek(uint32_t *s, int64_t dt)
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{
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uint32_t a, c, t = *s;
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if (dt >= 0) {
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a = LCG_A;
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c = LCG_C;
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} else { /* coefficients for a step backward */
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a = LCG_AI;
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c = (uint32_t)(LCG_AI * LCG_C);
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dt = -dt;
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}
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while (dt) {
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if (dt & 1)
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t = a * t + c;
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c *= a + 1; /* coefficients for a double step */
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a *= a;
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dt >>= 1;
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}
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*s = t;
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}
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/* Emulate pink noise by summing white noise at the sampling frequency,
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* white noise at half the sampling frequency (each value taken twice),
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* etc., with a total of 8 octaves.
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* This is known as the Voss-McCartney algorithm. */
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static void pink_fill(struct wavesynth_context *ws)
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{
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int32_t vt[7] = { 0 }, v = 0;
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int i, j;
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ws->pink_pos = 0;
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if (!ws->pink_need)
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return;
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for (i = 0; i < PINK_UNIT; i++) {
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for (j = 0; j < 7; j++) {
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if ((i >> j) & 1)
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break;
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v -= vt[j];
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vt[j] = (int32_t)lcg_next(&ws->pink_state) >> 3;
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v += vt[j];
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}
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ws->pink_pool[i] = v + ((int32_t)lcg_next(&ws->pink_state) >> 3);
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}
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lcg_next(&ws->pink_state); /* so we use exactly 256 steps */
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}
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/**
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* @return (1<<64) * a / b, without overflow, if a < b
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*/
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static uint64_t frac64(uint64_t a, uint64_t b)
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{
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uint64_t r = 0;
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int i;
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if (b < (uint64_t)1 << 32) { /* b small, use two 32-bits steps */
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a <<= 32;
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return ((a / b) << 32) | ((a % b) << 32) / b;
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}
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if (b < (uint64_t)1 << 48) { /* b medium, use four 16-bits steps */
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for (i = 0; i < 4; i++) {
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a <<= 16;
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r = (r << 16) | (a / b);
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a %= b;
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}
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return r;
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}
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for (i = 63; i >= 0; i--) {
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if (a >= (uint64_t)1 << 63 || a << 1 >= b) {
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r |= (uint64_t)1 << i;
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a = (a << 1) - b;
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} else {
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a <<= 1;
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}
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}
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return r;
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}
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static uint64_t phi_at(struct ws_interval *in, int64_t ts)
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{
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uint64_t dt = ts - in->ts_start;
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uint64_t dt2 = dt & 1 ? /* dt * (dt - 1) / 2 without overflow */
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dt * ((dt - 1) >> 1) : (dt >> 1) * (dt - 1);
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return in->phi0 + dt * in->dphi0 + dt2 * in->ddphi;
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}
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static void wavesynth_seek(struct wavesynth_context *ws, int64_t ts)
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{
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int *last, i;
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struct ws_interval *in;
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last = &ws->cur_inter;
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for (i = 0; i < ws->nb_inter; i++) {
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in = &ws->inter[i];
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if (ts < in->ts_start)
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break;
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if (ts >= in->ts_end)
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continue;
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*last = i;
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last = &in->next;
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in->phi = phi_at(in, ts);
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in->dphi = in->dphi0 + (ts - in->ts_start) * in->ddphi;
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in->amp = in->amp0 + (ts - in->ts_start) * in->damp;
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}
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ws->next_inter = i;
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ws->next_ts = i < ws->nb_inter ? ws->inter[i].ts_start : INF_TS;
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*last = -1;
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lcg_seek(&ws->dither_state, ts - ws->cur_ts);
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if (ws->pink_need) {
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int64_t pink_ts_cur = (ws->cur_ts + PINK_UNIT - 1) & ~(PINK_UNIT - 1);
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int64_t pink_ts_next = ts & ~(PINK_UNIT - 1);
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int pos = ts & (PINK_UNIT - 1);
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lcg_seek(&ws->pink_state, (pink_ts_next - pink_ts_cur) << 1);
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if (pos) {
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pink_fill(ws);
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ws->pink_pos = pos;
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} else {
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ws->pink_pos = PINK_UNIT;
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}
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}
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ws->cur_ts = ts;
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}
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static int wavesynth_parse_extradata(AVCodecContext *avc)
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{
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struct wavesynth_context *ws = avc->priv_data;
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struct ws_interval *in;
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uint8_t *edata, *edata_end;
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int32_t f1, f2, a1, a2;
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uint32_t phi;
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int64_t dphi1, dphi2, dt, cur_ts = -0x8000000000000000;
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int i;
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if (avc->extradata_size < 4)
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return AVERROR(EINVAL);
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edata = avc->extradata;
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edata_end = edata + avc->extradata_size;
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ws->nb_inter = AV_RL32(edata);
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edata += 4;
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if (ws->nb_inter < 0)
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return AVERROR(EINVAL);
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ws->inter = av_calloc(ws->nb_inter, sizeof(*ws->inter));
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if (!ws->inter)
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return AVERROR(ENOMEM);
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for (i = 0; i < ws->nb_inter; i++) {
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in = &ws->inter[i];
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if (edata_end - edata < 24)
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return AVERROR(EINVAL);
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in->ts_start = AV_RL64(edata + 0);
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in->ts_end = AV_RL64(edata + 8);
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in->type = AV_RL32(edata + 16);
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in->channels = AV_RL32(edata + 20);
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edata += 24;
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if (in->ts_start < cur_ts || in->ts_end <= in->ts_start)
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return AVERROR(EINVAL);
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cur_ts = in->ts_start;
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dt = in->ts_end - in->ts_start;
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switch (in->type) {
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case WS_SINE:
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if (edata_end - edata < 20)
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return AVERROR(EINVAL);
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f1 = AV_RL32(edata + 0);
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f2 = AV_RL32(edata + 4);
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a1 = AV_RL32(edata + 8);
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a2 = AV_RL32(edata + 12);
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phi = AV_RL32(edata + 16);
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edata += 20;
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dphi1 = frac64(f1, (int64_t)avc->sample_rate << 16);
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dphi2 = frac64(f2, (int64_t)avc->sample_rate << 16);
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in->dphi0 = dphi1;
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in->ddphi = (dphi2 - dphi1) / dt;
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if (phi & 0x80000000) {
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phi &= ~0x80000000;
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if (phi >= i)
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return AVERROR(EINVAL);
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in->phi0 = phi_at(&ws->inter[phi], in->ts_start);
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} else {
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in->phi0 = (uint64_t)phi << 33;
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}
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break;
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case WS_NOISE:
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if (edata_end - edata < 8)
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return AVERROR(EINVAL);
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a1 = AV_RL32(edata + 0);
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a2 = AV_RL32(edata + 4);
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edata += 8;
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break;
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default:
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return AVERROR(EINVAL);
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}
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in->amp0 = (int64_t)a1 << 32;
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in->damp = (((int64_t)a2 << 32) - ((int64_t)a1 << 32)) / dt;
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}
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if (edata != edata_end)
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return AVERROR(EINVAL);
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return 0;
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}
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static av_cold int wavesynth_init(AVCodecContext *avc)
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{
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struct wavesynth_context *ws = avc->priv_data;
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int i, r;
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if (avc->channels > WS_MAX_CHANNELS) {
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av_log(avc, AV_LOG_ERROR,
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"This implementation is limited to %d channels.\n",
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WS_MAX_CHANNELS);
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return AVERROR(EINVAL);
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}
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r = wavesynth_parse_extradata(avc);
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if (r < 0) {
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av_log(avc, AV_LOG_ERROR, "Invalid intervals definitions.\n");
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goto fail;
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}
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ws->sin = av_malloc(sizeof(*ws->sin) << SIN_BITS);
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if (!ws->sin) {
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r = AVERROR(ENOMEM);
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goto fail;
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}
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for (i = 0; i < 1 << SIN_BITS; i++)
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ws->sin[i] = floor(32767 * sin(2 * M_PI * i / (1 << SIN_BITS)));
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ws->dither_state = MKTAG('D','I','T','H');
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for (i = 0; i < ws->nb_inter; i++)
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ws->pink_need += ws->inter[i].type == WS_NOISE;
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ws->pink_state = MKTAG('P','I','N','K');
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ws->pink_pos = PINK_UNIT;
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avcodec_get_frame_defaults(&ws->frame);
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avc->coded_frame = &ws->frame;
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wavesynth_seek(ws, 0);
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avc->sample_fmt = AV_SAMPLE_FMT_S16;
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return 0;
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fail:
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av_free(ws->inter);
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av_free(ws->sin);
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return r;
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}
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static void wavesynth_synth_sample(struct wavesynth_context *ws, int64_t ts,
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int32_t *channels)
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{
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int32_t amp, val, *cv;
|
|
struct ws_interval *in;
|
|
int i, *last, pink;
|
|
uint32_t c, all_ch = 0;
|
|
|
|
i = ws->cur_inter;
|
|
last = &ws->cur_inter;
|
|
if (ws->pink_pos == PINK_UNIT)
|
|
pink_fill(ws);
|
|
pink = ws->pink_pool[ws->pink_pos++] >> 16;
|
|
while (i >= 0) {
|
|
in = &ws->inter[i];
|
|
i = in->next;
|
|
if (ts >= in->ts_end) {
|
|
*last = i;
|
|
continue;
|
|
}
|
|
last = &in->next;
|
|
amp = in->amp >> 32;
|
|
in->amp += in->damp;
|
|
switch (in->type) {
|
|
case WS_SINE:
|
|
val = amp * ws->sin[in->phi >> (64 - SIN_BITS)];
|
|
in->phi += in->dphi;
|
|
in->dphi += in->ddphi;
|
|
break;
|
|
case WS_NOISE:
|
|
val = amp * pink;
|
|
break;
|
|
default:
|
|
val = 0;
|
|
}
|
|
all_ch |= in->channels;
|
|
for (c = in->channels, cv = channels; c; c >>= 1, cv++)
|
|
if (c & 1)
|
|
*cv += val;
|
|
}
|
|
val = (int32_t)lcg_next(&ws->dither_state) >> 16;
|
|
for (c = all_ch, cv = channels; c; c >>= 1, cv++)
|
|
if (c & 1)
|
|
*cv += val;
|
|
}
|
|
|
|
static void wavesynth_enter_intervals(struct wavesynth_context *ws, int64_t ts)
|
|
{
|
|
int *last, i;
|
|
struct ws_interval *in;
|
|
|
|
last = &ws->cur_inter;
|
|
for (i = ws->cur_inter; i >= 0; i = ws->inter[i].next)
|
|
last = &ws->inter[i].next;
|
|
for (i = ws->next_inter; i < ws->nb_inter; i++) {
|
|
in = &ws->inter[i];
|
|
if (ts < in->ts_start)
|
|
break;
|
|
if (ts >= in->ts_end)
|
|
continue;
|
|
*last = i;
|
|
last = &in->next;
|
|
in->phi = in->phi0;
|
|
in->dphi = in->dphi0;
|
|
in->amp = in->amp0;
|
|
}
|
|
ws->next_inter = i;
|
|
ws->next_ts = i < ws->nb_inter ? ws->inter[i].ts_start : INF_TS;
|
|
*last = -1;
|
|
}
|
|
|
|
static int wavesynth_decode(AVCodecContext *avc, void *rframe, int *rgot_frame,
|
|
AVPacket *packet)
|
|
{
|
|
struct wavesynth_context *ws = avc->priv_data;
|
|
int64_t ts;
|
|
int duration;
|
|
int s, c, r;
|
|
int16_t *pcm;
|
|
int32_t channels[WS_MAX_CHANNELS];
|
|
|
|
*rgot_frame = 0;
|
|
if (packet->size != 12)
|
|
return AVERROR_INVALIDDATA;
|
|
ts = AV_RL64(packet->data);
|
|
if (ts != ws->cur_ts)
|
|
wavesynth_seek(ws, ts);
|
|
duration = AV_RL32(packet->data + 8);
|
|
if (duration <= 0)
|
|
return AVERROR(EINVAL);
|
|
ws->frame.nb_samples = duration;
|
|
r = ff_get_buffer(avc, &ws->frame, 0);
|
|
if (r < 0)
|
|
return r;
|
|
pcm = (int16_t *)ws->frame.data[0];
|
|
for (s = 0; s < duration; s++, ts++) {
|
|
memset(channels, 0, avc->channels * sizeof(*channels));
|
|
if (ts >= ws->next_ts)
|
|
wavesynth_enter_intervals(ws, ts);
|
|
wavesynth_synth_sample(ws, ts, channels);
|
|
for (c = 0; c < avc->channels; c++)
|
|
*(pcm++) = channels[c] >> 16;
|
|
}
|
|
ws->cur_ts += duration;
|
|
*rgot_frame = 1;
|
|
*(AVFrame *)rframe = ws->frame;
|
|
return packet->size;
|
|
}
|
|
|
|
static av_cold int wavesynth_close(AVCodecContext *avc)
|
|
{
|
|
struct wavesynth_context *ws = avc->priv_data;
|
|
|
|
av_free(ws->sin);
|
|
av_free(ws->inter);
|
|
return 0;
|
|
}
|
|
|
|
AVCodec ff_ffwavesynth_decoder = {
|
|
.name = "wavesynth",
|
|
.type = AVMEDIA_TYPE_AUDIO,
|
|
.id = AV_CODEC_ID_FFWAVESYNTH,
|
|
.priv_data_size = sizeof(struct wavesynth_context),
|
|
.init = wavesynth_init,
|
|
.close = wavesynth_close,
|
|
.decode = wavesynth_decode,
|
|
.capabilities = CODEC_CAP_DR1,
|
|
.long_name = NULL_IF_CONFIG_SMALL("Wave synthesis pseudo-codec"),
|
|
};
|