diff options
author | Aurelien Jacobs <aurel@gnuage.org> | 2007-05-14 03:16:56 +0400 |
---|---|---|
committer | Aurelien Jacobs <aurel@gnuage.org> | 2007-05-14 03:16:56 +0400 |
commit | 6ba04c2b033942a66ee2af5fde67e091febd9aaa (patch) | |
tree | bfdd146fe8e3c67933e0e6a9b1ea242f35945930 | |
parent | 1adf2e564a303300e3431c27b79ec644ded9fe04 (diff) |
split jpeg_ls into jpeglsdec, jpeglsenc and jpegls
Originally committed as revision 9021 to svn://svn.ffmpeg.org/ffmpeg/trunk
-rw-r--r-- | libavcodec/Makefile | 16 | ||||
-rw-r--r-- | libavcodec/jpeg_ls.c | 860 | ||||
-rw-r--r-- | libavcodec/jpegls.c | 96 | ||||
-rw-r--r-- | libavcodec/jpegls.h | 111 | ||||
-rw-r--r-- | libavcodec/jpeglsdec.c | 361 | ||||
-rw-r--r-- | libavcodec/jpeglsdec.h | 40 | ||||
-rw-r--r-- | libavcodec/jpeglsenc.c | 392 | ||||
-rw-r--r-- | libavcodec/mjpeg.c | 161 | ||||
-rw-r--r-- | libavcodec/mjpeg.h | 195 |
9 files changed, 1207 insertions, 1025 deletions
diff --git a/libavcodec/Makefile b/libavcodec/Makefile index ff79bd571d..433d55e3f2 100644 --- a/libavcodec/Makefile +++ b/libavcodec/Makefile @@ -100,15 +100,15 @@ OBJS-$(CONFIG_INDEO2_DECODER) += indeo2.o OBJS-$(CONFIG_INDEO3_DECODER) += indeo3.o OBJS-$(CONFIG_INTERPLAY_VIDEO_DECODER) += interplayvideo.o OBJS-$(CONFIG_INTERPLAY_DPCM_DECODER) += dpcm.o -OBJS-$(CONFIG_JPEGLS_ENCODER) += mjpeg.o +OBJS-$(CONFIG_JPEGLS_ENCODER) += jpeglsenc.o jpegls.o OBJS-$(CONFIG_KMVC_DECODER) += kmvc.o -OBJS-$(CONFIG_LJPEG_ENCODER) += mjpeg.o +OBJS-$(CONFIG_LJPEG_ENCODER) += mjpeg.o jpeglsdec.o jpegls.o OBJS-$(CONFIG_LOCO_DECODER) += loco.o OBJS-$(CONFIG_MACE3_DECODER) += mace.o OBJS-$(CONFIG_MACE6_DECODER) += mace.o -OBJS-$(CONFIG_MJPEG_DECODER) += mjpeg.o -OBJS-$(CONFIG_MJPEG_ENCODER) += mjpeg.o mpegvideo.o -OBJS-$(CONFIG_MJPEGB_DECODER) += mjpeg.o +OBJS-$(CONFIG_MJPEG_DECODER) += mjpeg.o jpeglsdec.o jpegls.o +OBJS-$(CONFIG_MJPEG_ENCODER) += mjpeg.o jpeglsdec.o mpegvideo.o jpegls.o +OBJS-$(CONFIG_MJPEGB_DECODER) += mjpeg.o jpeglsdec.o jpegls.o OBJS-$(CONFIG_MMVIDEO_DECODER) += mmvideo.o OBJS-$(CONFIG_MP2_ENCODER) += mpegaudio.o OBJS-$(CONFIG_MPC7_DECODER) += mpc.o @@ -156,14 +156,14 @@ OBJS-$(CONFIG_SOL_DPCM_DECODER) += dpcm.o OBJS-$(CONFIG_SONIC_DECODER) += sonic.o OBJS-$(CONFIG_SONIC_ENCODER) += sonic.o OBJS-$(CONFIG_SONIC_LS_DECODER) += sonic.o -OBJS-$(CONFIG_SP5X_DECODER) += mjpeg.o +OBJS-$(CONFIG_SP5X_DECODER) += mjpeg.o jpeglsdec.o jpegls.o OBJS-$(CONFIG_SVQ1_DECODER) += svq1.o OBJS-$(CONFIG_SVQ1_ENCODER) += svq1.o OBJS-$(CONFIG_SVQ3_DECODER) += h264.o OBJS-$(CONFIG_TARGA_DECODER) += targa.o OBJS-$(CONFIG_TARGA_ENCODER) += targaenc.o rle.o OBJS-$(CONFIG_THEORA_DECODER) += vp3.o xiph.o -OBJS-$(CONFIG_THP_DECODER) += mjpeg.o +OBJS-$(CONFIG_THP_DECODER) += mjpeg.o jpeglsdec.o jpegls.o OBJS-$(CONFIG_TIERTEXSEQVIDEO_DECODER) += tiertexseqv.o OBJS-$(CONFIG_TIFF_DECODER) += tiff.o lzw.o OBJS-$(CONFIG_TIFF_ENCODER) += tiffenc.o rle.o lzwenc.o @@ -313,7 +313,7 @@ OBJS-$(CONFIG_REMOVE_EXTRADATA_BSF) += bitstream_filter.o OBJS-$(CONFIG_NOISE_BSF) += bitstream_filter.o OBJS-$(CONFIG_MP3_HEADER_COMPRESS_BSF) += bitstream_filter.o OBJS-$(CONFIG_MP3_HEADER_DECOMPRESS_BSF) += bitstream_filter.o -OBJS-$(CONFIG_MJPEGA_DUMP_HEADER_BSF) += mjpeg.o +OBJS-$(CONFIG_MJPEGA_DUMP_HEADER_BSF) += mjpeg.o jpeglsdec.o jpegls.o OBJS-$(CONFIG_IMX_DUMP_HEADER_BSF) += mpeg12.o OBJS-$(HAVE_PTHREADS) += pthread.o diff --git a/libavcodec/jpeg_ls.c b/libavcodec/jpeg_ls.c deleted file mode 100644 index 855fc73da0..0000000000 --- a/libavcodec/jpeg_ls.c +++ /dev/null @@ -1,860 +0,0 @@ -/* - * JPEG-LS encoder and decoder - * Copyright (c) 2003 Michael Niedermayer - * Copyright (c) 2006 Konstantin Shishkov - * - * 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 - */ - -#include "golomb.h" - -/** - * @file jpeg_ls.c - * JPEG-LS encoder and decoder. - */ - -typedef struct JpeglsContext{ - AVCodecContext *avctx; - AVFrame picture; -}JpeglsContext; - -typedef struct JLSState{ - int T1, T2, T3; - int A[367], B[367], C[365], N[367]; - int limit, reset, bpp, qbpp, maxval, range; - int near, twonear; - int run_index[3]; -}JLSState; - -static const uint8_t log2_run[32]={ - 0, 0, 0, 0, 1, 1, 1, 1, - 2, 2, 2, 2, 3, 3, 3, 3, - 4, 4, 5, 5, 6, 6, 7, 7, - 8, 9,10,11,12,13,14,15 -}; - -/* -* Uncomment this to significantly speed up decoding of broken JPEG-LS -* (or test broken JPEG-LS decoder) and slow down ordinary decoding a bit. -* -* There is no Golomb code with length >= 32 bits possible, so check and -* avoid situation of 32 zeros, FFmpeg Golomb decoder is painfully slow -* on this errors. -*/ -//#define JLS_BROKEN - -/********** Functions for both encoder and decoder **********/ - -/** - * Calculate initial JPEG-LS parameters - */ -static void ls_init_state(JLSState *state){ - int i; - - state->twonear = state->near * 2 + 1; - state->range = ((state->maxval + state->twonear - 1) / state->twonear) + 1; - - // QBPP = ceil(log2(RANGE)) - for(state->qbpp = 0; (1 << state->qbpp) < state->range; state->qbpp++); - - if(state->bpp < 8) - state->limit = 16 + 2 * state->bpp - state->qbpp; - else - state->limit = (4 * state->bpp) - state->qbpp; - - for(i = 0; i < 367; i++) { - state->A[i] = FFMAX((state->range + 32) >> 6, 2); - state->N[i] = 1; - } - -} - -/** - * Calculate quantized gradient value, used for context determination - */ -static inline int quantize(JLSState *s, int v){ //FIXME optimize - if(v==0) return 0; - if(v < 0){ - if(v <= -s->T3) return -4; - if(v <= -s->T2) return -3; - if(v <= -s->T1) return -2; - if(v < -s->near) return -1; - return 0; - }else{ - if(v <= s->near) return 0; - if(v < s->T1) return 1; - if(v < s->T2) return 2; - if(v < s->T3) return 3; - return 4; - } -} - -/** - * Custom value clipping function used in T1, T2, T3 calculation - */ -static inline int iso_clip(int v, int vmin, int vmax){ - if(v > vmax || v < vmin) return vmin; - else return v; -} - -/** - * Calculate JPEG-LS codec values - */ -static void reset_ls_coding_parameters(JLSState *s, int reset_all){ - const int basic_t1= 3; - const int basic_t2= 7; - const int basic_t3= 21; - int factor; - - if(s->maxval==0 || reset_all) s->maxval= (1 << s->bpp) - 1; - - if(s->maxval >=128){ - factor= (FFMIN(s->maxval, 4095) + 128)>>8; - - if(s->T1==0 || reset_all) - s->T1= iso_clip(factor*(basic_t1-2) + 2 + 3*s->near, s->near+1, s->maxval); - if(s->T2==0 || reset_all) - s->T2= iso_clip(factor*(basic_t2-3) + 3 + 5*s->near, s->T1, s->maxval); - if(s->T3==0 || reset_all) - s->T3= iso_clip(factor*(basic_t3-4) + 4 + 7*s->near, s->T2, s->maxval); - }else{ - factor= 256 / (s->maxval + 1); - - if(s->T1==0 || reset_all) - s->T1= iso_clip(FFMAX(2, basic_t1/factor + 3*s->near), s->near+1, s->maxval); - if(s->T2==0 || reset_all) - s->T2= iso_clip(FFMAX(3, basic_t2/factor + 5*s->near), s->T1, s->maxval); - if(s->T3==0 || reset_all) - s->T3= iso_clip(FFMAX(4, basic_t3/factor + 6*s->near), s->T2, s->maxval); - } - - if(s->reset==0 || reset_all) s->reset= 64; -// av_log(NULL, AV_LOG_DEBUG, "[JPEG-LS RESET] T=%i,%i,%i\n", s->T1, s->T2, s->T3); -} - - -/********** Decoder-specific functions **********/ - -/** - * Decode LSE block with initialization parameters - */ -static int decode_lse(MJpegDecodeContext *s) -{ - int len, id; - - /* XXX: verify len field validity */ - len = get_bits(&s->gb, 16); - id = get_bits(&s->gb, 8); - - switch(id){ - case 1: - s->maxval= get_bits(&s->gb, 16); - s->t1= get_bits(&s->gb, 16); - s->t2= get_bits(&s->gb, 16); - s->t3= get_bits(&s->gb, 16); - s->reset= get_bits(&s->gb, 16); - -// reset_ls_coding_parameters(s, 0); - //FIXME quant table? - break; - case 2: - case 3: - av_log(s->avctx, AV_LOG_ERROR, "palette not supported\n"); - return -1; - case 4: - av_log(s->avctx, AV_LOG_ERROR, "oversize image not supported\n"); - return -1; - default: - av_log(s->avctx, AV_LOG_ERROR, "invalid id %d\n", id); - return -1; - } -// av_log(s->avctx, AV_LOG_DEBUG, "ID=%i, T=%i,%i,%i\n", id, s->t1, s->t2, s->t3); - - return 0; -} - -static inline void downscale_state(JLSState *state, int Q){ - if(state->N[Q] == state->reset){ - state->A[Q] >>=1; - state->B[Q] >>=1; - state->N[Q] >>=1; - } - state->N[Q]++; -} - -static inline int update_state_regular(JLSState *state, int Q, int err){ - state->A[Q] += FFABS(err); - err *= state->twonear; - state->B[Q] += err; - - downscale_state(state, Q); - - if(state->B[Q] <= -state->N[Q]) { - state->B[Q]= FFMAX(state->B[Q] + state->N[Q], 1-state->N[Q]); - if(state->C[Q] > -128) - state->C[Q]--; - }else if(state->B[Q] > 0){ - state->B[Q]= FFMIN(state->B[Q] - state->N[Q], 0); - if(state->C[Q] < 127) - state->C[Q]++; - } - - return err; -} - -/** - * Get context-dependent Golomb code, decode it and update context - */ -static inline int ls_get_code_regular(GetBitContext *gb, JLSState *state, int Q){ - int k, ret; - - for(k = 0; (state->N[Q] << k) < state->A[Q]; k++); - -#ifdef JLS_BROKEN - if(!show_bits_long(gb, 32))return -1; -#endif - ret = get_ur_golomb_jpegls(gb, k, state->limit, state->qbpp); - - /* decode mapped error */ - if(ret & 1) - ret = -((ret + 1) >> 1); - else - ret >>= 1; - - /* for NEAR=0, k=0 and 2*B[Q] <= - N[Q] mapping is reversed */ - if(!state->near && !k && (2 * state->B[Q] <= -state->N[Q])) - ret = -(ret + 1); - - ret= update_state_regular(state, Q, ret); - - return ret; -} - -/** - * Get Golomb code, decode it and update state for run termination - */ -static inline int ls_get_code_runterm(GetBitContext *gb, JLSState *state, int RItype, int limit_add){ - int k, ret, temp, map; - int Q = 365 + RItype; - - temp= state->A[Q]; - if(RItype) - temp += state->N[Q] >> 1; - - for(k = 0; (state->N[Q] << k) < temp; k++); - -#ifdef JLS_BROKEN - if(!show_bits_long(gb, 32))return -1; -#endif - ret = get_ur_golomb_jpegls(gb, k, state->limit - limit_add - 1, state->qbpp); - - /* decode mapped error */ - map = 0; - if(!k && (RItype || ret) && (2 * state->B[Q] < state->N[Q])) - map = 1; - ret += RItype + map; - - if(ret & 1){ - ret = map - ((ret + 1) >> 1); - state->B[Q]++; - } else { - ret = ret >> 1; - } - - /* update state */ - state->A[Q] += FFABS(ret) - RItype; - ret *= state->twonear; - downscale_state(state, Q); - - return ret; -} - -#define R(a, i ) (bits == 8 ? ((uint8_t*)(a))[i] : ((uint16_t*)(a))[i] ) -#define W(a, i, v) (bits == 8 ? (((uint8_t*)(a))[i]=v) : (((uint16_t*)(a))[i]=v)) -/** - * Decode one line of image - */ -static inline void ls_decode_line(JLSState *state, MJpegDecodeContext *s, void *last, void *dst, int last2, int w, int stride, int comp, int bits){ - int i, x = 0; - int Ra, Rb, Rc, Rd; - int D0, D1, D2; - - while(x < w) { - int err, pred; - - /* compute gradients */ - Ra = x ? R(dst, x - stride) : R(last, x); - Rb = R(last, x); - Rc = x ? R(last, x - stride) : last2; - Rd = (x >= w - stride) ? R(last, x) : R(last, x + stride); - D0 = Rd - Rb; - D1 = Rb - Rc; - D2 = Rc - Ra; - /* run mode */ - if((FFABS(D0) <= state->near) && (FFABS(D1) <= state->near) && (FFABS(D2) <= state->near)) { - int r; - int RItype; - - /* decode full runs while available */ - while(get_bits1(&s->gb)) { - int r; - r = 1 << log2_run[state->run_index[comp]]; - if(x + r * stride > w) { - r = (w - x) / stride; - } - for(i = 0; i < r; i++) { - W(dst, x, Ra); - x += stride; - } - /* if EOL reached, we stop decoding */ - if(r != (1 << log2_run[state->run_index[comp]])) - return; - if(state->run_index[comp] < 31) - state->run_index[comp]++; - if(x + stride > w) - return; - } - /* decode aborted run */ - r = log2_run[state->run_index[comp]]; - if(r) - r = get_bits_long(&s->gb, r); - for(i = 0; i < r; i++) { - W(dst, x, Ra); - x += stride; - } - - /* decode run termination value */ - Rb = R(last, x); - RItype = (FFABS(Ra - Rb) <= state->near) ? 1 : 0; - err = ls_get_code_runterm(&s->gb, state, RItype, log2_run[state->run_index[comp]]); - if(state->run_index[comp]) - state->run_index[comp]--; - - if(state->near && RItype){ - pred = Ra + err; - } else { - if(Rb < Ra) - pred = Rb - err; - else - pred = Rb + err; - } - } else { /* regular mode */ - int context, sign; - - context = quantize(state, D0) * 81 + quantize(state, D1) * 9 + quantize(state, D2); - pred = mid_pred(Ra, Ra + Rb - Rc, Rb); - - if(context < 0){ - context = -context; - sign = 1; - }else{ - sign = 0; - } - - if(sign){ - pred = av_clip(pred - state->C[context], 0, state->maxval); - err = -ls_get_code_regular(&s->gb, state, context); - } else { - pred = av_clip(pred + state->C[context], 0, state->maxval); - err = ls_get_code_regular(&s->gb, state, context); - } - - /* we have to do something more for near-lossless coding */ - pred += err; - } - if(state->near){ - if(pred < -state->near) - pred += state->range * state->twonear; - else if(pred > state->maxval + state->near) - pred -= state->range * state->twonear; - pred = av_clip(pred, 0, state->maxval); - } - - pred &= state->maxval; - W(dst, x, pred); - x += stride; - } -} - -static int ls_decode_picture(MJpegDecodeContext *s, int near, int point_transform, int ilv){ - int i, t = 0; - uint8_t *zero, *last, *cur; - JLSState *state; - int off = 0, stride = 1, width, shift; - - zero = av_mallocz(s->picture.linesize[0]); - last = zero; - cur = s->picture.data[0]; - - state = av_mallocz(sizeof(JLSState)); - /* initialize JPEG-LS state from JPEG parameters */ - state->near = near; - state->bpp = (s->bits < 2) ? 2 : s->bits; - state->maxval = s->maxval; - state->T1 = s->t1; - state->T2 = s->t2; - state->T3 = s->t3; - state->reset = s->reset; - reset_ls_coding_parameters(state, 0); - ls_init_state(state); - - if(s->bits <= 8) - shift = point_transform + (8 - s->bits); - else - shift = point_transform + (16 - s->bits); - -// av_log(s->avctx, AV_LOG_DEBUG, "JPEG-LS params: %ix%i NEAR=%i MV=%i T(%i,%i,%i) RESET=%i, LIMIT=%i, qbpp=%i, RANGE=%i\n",s->width,s->height,state->near,state->maxval,state->T1,state->T2,state->T3,state->reset,state->limit,state->qbpp, state->range); -// av_log(s->avctx, AV_LOG_DEBUG, "JPEG params: ILV=%i Pt=%i BPP=%i, scan = %i\n", ilv, point_transform, s->bits, s->cur_scan); - if(ilv == 0) { /* separate planes */ - off = s->cur_scan - 1; - stride = (s->nb_components > 1) ? 3 : 1; - width = s->width * stride; - cur += off; - for(i = 0; i < s->height; i++) { - if(s->bits <= 8){ - ls_decode_line(state, s, last, cur, t, width, stride, off, 8); - t = last[0]; - }else{ - ls_decode_line(state, s, last, cur, t, width, stride, off, 16); - t = *((uint16_t*)last); - } - last = cur; - cur += s->picture.linesize[0]; - - if (s->restart_interval && !--s->restart_count) { - align_get_bits(&s->gb); - skip_bits(&s->gb, 16); /* skip RSTn */ - } - } - } else if(ilv == 1) { /* line interleaving */ - int j; - int Rc[3] = {0, 0, 0}; - memset(cur, 0, s->picture.linesize[0]); - width = s->width * 3; - for(i = 0; i < s->height; i++) { - for(j = 0; j < 3; j++) { - ls_decode_line(state, s, last + j, cur + j, Rc[j], width, 3, j, 8); - Rc[j] = last[j]; - - if (s->restart_interval && !--s->restart_count) { - align_get_bits(&s->gb); - skip_bits(&s->gb, 16); /* skip RSTn */ - } - } - last = cur; - cur += s->picture.linesize[0]; - } - } else if(ilv == 2) { /* sample interleaving */ - av_log(s->avctx, AV_LOG_ERROR, "Sample interleaved images are not supported.\n"); - av_free(state); - av_free(zero); - return -1; - } - - if(shift){ /* we need to do point transform or normalize samples */ - int x, w; - - w = s->width * s->nb_components; - - if(s->bits <= 8){ - uint8_t *src = s->picture.data[0]; - - for(i = 0; i < s->height; i++){ - for(x = off; x < w; x+= stride){ - src[x] <<= shift; - } - src += s->picture.linesize[0]; - } - }else{ - uint16_t *src = (uint16_t*) s->picture.data[0]; - - for(i = 0; i < s->height; i++){ - for(x = 0; x < w; x++){ - src[x] <<= shift; - } - src += s->picture.linesize[0]/2; - } - } - } - av_free(state); - av_free(zero); - - return 0; -} - -#if defined(CONFIG_ENCODERS) && defined(CONFIG_JPEGLS_ENCODER) -/********** Encoder-specific functions **********/ - -/** - * Encode error from regular symbol - */ -static inline void ls_encode_regular(JLSState *state, PutBitContext *pb, int Q, int err){ - int k; - int val; - int map; - - for(k = 0; (state->N[Q] << k) < state->A[Q]; k++); - - map = !state->near && !k && (2 * state->B[Q] <= -state->N[Q]); - - if(err < 0) - err += state->range; - if(err >= ((state->range + 1) >> 1)) { - err -= state->range; - val = 2 * FFABS(err) - 1 - map; - } else - val = 2 * err + map; - - set_ur_golomb_jpegls(pb, val, k, state->limit, state->qbpp); - - update_state_regular(state, Q, err); -} - -/** - * Encode error from run termination - */ -static inline void ls_encode_runterm(JLSState *state, PutBitContext *pb, int RItype, int err, int limit_add){ - int k; - int val, map; - int Q = 365 + RItype; - int temp; - - temp = state->A[Q]; - if(RItype) - temp += state->N[Q] >> 1; - for(k = 0; (state->N[Q] << k) < temp; k++); - map = 0; - if(!k && err && (2 * state->B[Q] < state->N[Q])) - map = 1; - - if(err < 0) - val = - (2 * err) - 1 - RItype + map; - else - val = 2 * err - RItype - map; - set_ur_golomb_jpegls(pb, val, k, state->limit - limit_add - 1, state->qbpp); - - if(err < 0) - state->B[Q]++; - state->A[Q] += (val + 1 - RItype) >> 1; - - downscale_state(state, Q); -} - -/** - * Encode run value as specified by JPEG-LS standard - */ -static inline void ls_encode_run(JLSState *state, PutBitContext *pb, int run, int comp, int trail){ - while(run >= (1 << log2_run[state->run_index[comp]])){ - put_bits(pb, 1, 1); - run -= 1 << log2_run[state->run_index[comp]]; - if(state->run_index[comp] < 31) - state->run_index[comp]++; - } - /* if hit EOL, encode another full run, else encode aborted run */ - if(!trail && run) { - put_bits(pb, 1, 1); - }else if(trail){ - put_bits(pb, 1, 0); - if(log2_run[state->run_index[comp]]) - put_bits(pb, log2_run[state->run_index[comp]], run); - } -} - -/** - * Encode one line of image - */ -static inline void ls_encode_line(JLSState *state, PutBitContext *pb, void *last, void *cur, int last2, int w, int stride, int comp, int bits){ - int x = 0; - int Ra, Rb, Rc, Rd; - int D0, D1, D2; - - while(x < w) { - int err, pred, sign; - - /* compute gradients */ - Ra = x ? R(cur, x - stride) : R(last, x); - Rb = R(last, x); - Rc = x ? R(last, x - stride) : last2; - Rd = (x >= w - stride) ? R(last, x) : R(last, x + stride); - D0 = Rd - Rb; - D1 = Rb - Rc; - D2 = Rc - Ra; - - /* run mode */ - if((FFABS(D0) <= state->near) && (FFABS(D1) <= state->near) && (FFABS(D2) <= state->near)) { - int RUNval, RItype, run; - - run = 0; - RUNval = Ra; - while(x < w && (FFABS(R(cur, x) - RUNval) <= state->near)){ - run++; - W(cur, x, Ra); - x += stride; - } - ls_encode_run(state, pb, run, comp, x < w); - if(x >= w) - return; - Rb = R(last, x); - RItype = (FFABS(Ra - Rb) <= state->near); - pred = RItype ? Ra : Rb; - err = R(cur, x) - pred; - - if(!RItype && Ra > Rb) - err = -err; - - if(state->near){ - if(err > 0) - err = (state->near + err) / state->twonear; - else - err = -(state->near - err) / state->twonear; - - if(RItype || (Rb >= Ra)) - Ra = av_clip(pred + err * state->twonear, 0, state->maxval); - else - Ra = av_clip(pred - err * state->twonear, 0, state->maxval); - W(cur, x, Ra); - } - if(err < 0) - err += state->range; - if(err >= ((state->range + 1) >> 1)) - err -= state->range; - - ls_encode_runterm(state, pb, RItype, err, log2_run[state->run_index[comp]]); - - if(state->run_index[comp] > 0) - state->run_index[comp]--; - } else { /* regular mode */ - int context; - - context = quantize(state, D0) * 81 + quantize(state, D1) * 9 + quantize(state, D2); - pred = mid_pred(Ra, Ra + Rb - Rc, Rb); - - if(context < 0){ - context = -context; - sign = 1; - pred = av_clip(pred - state->C[context], 0, state->maxval); - err = pred - R(cur, x); - }else{ - sign = 0; - pred = av_clip(pred + state->C[context], 0, state->maxval); - err = R(cur, x) - pred; - } - - if(state->near){ - if(err > 0) - err = (state->near + err) / state->twonear; - else - err = -(state->near - err) / state->twonear; - if(!sign) - Ra = av_clip(pred + err * state->twonear, 0, state->maxval); - else - Ra = av_clip(pred - err * state->twonear, 0, state->maxval); - W(cur, x, Ra); - } - - ls_encode_regular(state, pb, context, err); - } - x += stride; - } -} - -static void ls_store_lse(JLSState *state, PutBitContext *pb){ - /* Test if we have default params and don't need to store LSE */ - JLSState state2; - memset(&state2, 0, sizeof(JLSState)); - state2.bpp = state->bpp; - state2.near = state->near; - reset_ls_coding_parameters(&state2, 1); - if(state->T1 == state2.T1 && state->T2 == state2.T2 && state->T3 == state2.T3 && state->reset == state2.reset) - return; - /* store LSE type 1 */ - put_marker(pb, LSE); - put_bits(pb, 16, 13); - put_bits(pb, 8, 1); - put_bits(pb, 16, state->maxval); - put_bits(pb, 16, state->T1); - put_bits(pb, 16, state->T2); - put_bits(pb, 16, state->T3); - put_bits(pb, 16, state->reset); -} - -static int encode_picture_ls(AVCodecContext *avctx, unsigned char *buf, int buf_size, void *data){ - JpeglsContext * const s = avctx->priv_data; - AVFrame *pict = data; - AVFrame * const p= (AVFrame*)&s->picture; - const int near = avctx->prediction_method; - PutBitContext pb, pb2; - GetBitContext gb; - uint8_t *buf2, *zero, *cur, *last; - JLSState *state; - int i, size; - int comps; - - buf2 = av_malloc(buf_size); - - init_put_bits(&pb, buf, buf_size); - init_put_bits(&pb2, buf2, buf_size); - - *p = *pict; - p->pict_type= FF_I_TYPE; - p->key_frame= 1; - - if(avctx->pix_fmt == PIX_FMT_GRAY8 || avctx->pix_fmt == PIX_FMT_GRAY16) - comps = 1; - else - comps = 3; - - /* write our own JPEG header, can't use mjpeg_picture_header */ - put_marker(&pb, SOI); - put_marker(&pb, SOF48); - put_bits(&pb, 16, 8 + comps * 3); // header size depends on components - put_bits(&pb, 8, (avctx->pix_fmt == PIX_FMT_GRAY16) ? 16 : 8); // bpp - put_bits(&pb, 16, avctx->height); - put_bits(&pb, 16, avctx->width); - put_bits(&pb, 8, comps); // components - for(i = 1; i <= comps; i++) { - put_bits(&pb, 8, i); // component ID - put_bits(&pb, 8, 0x11); // subsampling: none - put_bits(&pb, 8, 0); // Tiq, used by JPEG-LS ext - } - - put_marker(&pb, SOS); - put_bits(&pb, 16, 6 + comps * 2); - put_bits(&pb, 8, comps); - for(i = 1; i <= comps; i++) { - put_bits(&pb, 8, i); // component ID - put_bits(&pb, 8, 0); // mapping index: none - } - put_bits(&pb, 8, near); - put_bits(&pb, 8, (comps > 1) ? 1 : 0); // interleaving: 0 - plane, 1 - line - put_bits(&pb, 8, 0); // point transform: none - - state = av_mallocz(sizeof(JLSState)); - /* initialize JPEG-LS state from JPEG parameters */ - state->near = near; - state->bpp = (avctx->pix_fmt == PIX_FMT_GRAY16) ? 16 : 8; - reset_ls_coding_parameters(state, 0); - ls_init_state(state); - - ls_store_lse(state, &pb); - - zero = av_mallocz(p->linesize[0]); - last = zero; - cur = p->data[0]; - if(avctx->pix_fmt == PIX_FMT_GRAY8){ - int t = 0; - - for(i = 0; i < avctx->height; i++) { - ls_encode_line(state, &pb2, last, cur, t, avctx->width, 1, 0, 8); - t = last[0]; - last = cur; - cur += p->linesize[0]; - } - }else if(avctx->pix_fmt == PIX_FMT_GRAY16){ - int t = 0; - - for(i = 0; i < avctx->height; i++) { - ls_encode_line(state, &pb2, last, cur, t, avctx->width, 1, 0, 16); - t = *((uint16_t*)last); - last = cur; - cur += p->linesize[0]; - } - }else if(avctx->pix_fmt == PIX_FMT_RGB24){ - int j, width; - int Rc[3] = {0, 0, 0}; - - width = avctx->width * 3; - for(i = 0; i < avctx->height; i++) { - for(j = 0; j < 3; j++) { - ls_encode_line(state, &pb2, last + j, cur + j, Rc[j], width, 3, j, 8); - Rc[j] = last[j]; - } - last = cur; - cur += s->picture.linesize[0]; - } - }else if(avctx->pix_fmt == PIX_FMT_BGR24){ - int j, width; - int Rc[3] = {0, 0, 0}; - - width = avctx->width * 3; - for(i = 0; i < avctx->height; i++) { - for(j = 2; j >= 0; j--) { - ls_encode_line(state, &pb2, last + j, cur + j, Rc[j], width, 3, j, 8); - Rc[j] = last[j]; - } - last = cur; - cur += s->picture.linesize[0]; - } - } - - av_free(zero); - av_free(state); - - // the specification says that after doing 0xff escaping unused bits in the - // last byte must be set to 0, so just append 7 "optional" zero-bits to - // avoid special-casing. - put_bits(&pb2, 7, 0); - size = put_bits_count(&pb2); - flush_put_bits(&pb2); - /* do escape coding */ - init_get_bits(&gb, buf2, size); - size -= 7; - while(get_bits_count(&gb) < size){ - int v; - v = get_bits(&gb, 8); - put_bits(&pb, 8, v); - if(v == 0xFF){ - v = get_bits(&gb, 7); - put_bits(&pb, 8, v); - } - } - align_put_bits(&pb); - av_free(buf2); - - /* End of image */ - put_marker(&pb, EOI); - flush_put_bits(&pb); - - emms_c(); - - return put_bits_count(&pb) >> 3; -} - -static int encode_init_ls(AVCodecContext *ctx) { - JpeglsContext *c = (JpeglsContext*)ctx->priv_data; - - c->avctx = ctx; - ctx->coded_frame = &c->picture; - - if(ctx->pix_fmt != PIX_FMT_GRAY8 && ctx->pix_fmt != PIX_FMT_GRAY16 && ctx->pix_fmt != PIX_FMT_RGB24 && ctx->pix_fmt != PIX_FMT_BGR24){ - av_log(ctx, AV_LOG_ERROR, "Only grayscale and RGB24/BGR24 images are supported\n"); - return -1; - } - return 0; -} - -AVCodec jpegls_encoder = { //FIXME avoid MPV_* lossless jpeg shouldnt need them - "jpegls", - CODEC_TYPE_VIDEO, - CODEC_ID_JPEGLS, - sizeof(JpeglsContext), - encode_init_ls, - encode_picture_ls, - NULL, - .pix_fmts= (enum PixelFormat[]){PIX_FMT_BGR24, PIX_FMT_RGB24, PIX_FMT_GRAY8, PIX_FMT_GRAY16, -1}, -}; -#endif diff --git a/libavcodec/jpegls.c b/libavcodec/jpegls.c new file mode 100644 index 0000000000..8a6f5065c2 --- /dev/null +++ b/libavcodec/jpegls.c @@ -0,0 +1,96 @@ +/* + * JPEG-LS common code + * Copyright (c) 2003 Michael Niedermayer + * Copyright (c) 2006 Konstantin Shishkov + * + * 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 + */ + +/** + * @file jpegls.c + * JPEG-LS common code. + */ + +#include "jpegls.h" + +const uint8_t ff_log2_run[32]={ + 0, 0, 0, 0, 1, 1, 1, 1, + 2, 2, 2, 2, 3, 3, 3, 3, + 4, 4, 5, 5, 6, 6, 7, 7, + 8, 9,10,11,12,13,14,15 +}; + +void ff_jpegls_init_state(JLSState *state){ + int i; + + state->twonear = state->near * 2 + 1; + state->range = ((state->maxval + state->twonear - 1) / state->twonear) + 1; + + // QBPP = ceil(log2(RANGE)) + for(state->qbpp = 0; (1 << state->qbpp) < state->range; state->qbpp++); + + if(state->bpp < 8) + state->limit = 16 + 2 * state->bpp - state->qbpp; + else + state->limit = (4 * state->bpp) - state->qbpp; + + for(i = 0; i < 367; i++) { + state->A[i] = FFMAX((state->range + 32) >> 6, 2); + state->N[i] = 1; + } + +} + +/** + * Custom value clipping function used in T1, T2, T3 calculation + */ +static inline int iso_clip(int v, int vmin, int vmax){ + if(v > vmax || v < vmin) return vmin; + else return v; +} + +void ff_jpegls_reset_coding_parameters(JLSState *s, int reset_all){ + const int basic_t1= 3; + const int basic_t2= 7; + const int basic_t3= 21; + int factor; + + if(s->maxval==0 || reset_all) s->maxval= (1 << s->bpp) - 1; + + if(s->maxval >=128){ + factor= (FFMIN(s->maxval, 4095) + 128)>>8; + + if(s->T1==0 || reset_all) + s->T1= iso_clip(factor*(basic_t1-2) + 2 + 3*s->near, s->near+1, s->maxval); + if(s->T2==0 || reset_all) + s->T2= iso_clip(factor*(basic_t2-3) + 3 + 5*s->near, s->T1, s->maxval); + if(s->T3==0 || reset_all) + s->T3= iso_clip(factor*(basic_t3-4) + 4 + 7*s->near, s->T2, s->maxval); + }else{ + factor= 256 / (s->maxval + 1); + + if(s->T1==0 || reset_all) + s->T1= iso_clip(FFMAX(2, basic_t1/factor + 3*s->near), s->near+1, s->maxval); + if(s->T2==0 || reset_all) + s->T2= iso_clip(FFMAX(3, basic_t2/factor + 5*s->near), s->T1, s->maxval); + if(s->T3==0 || reset_all) + s->T3= iso_clip(FFMAX(4, basic_t3/factor + 6*s->near), s->T2, s->maxval); + } + + if(s->reset==0 || reset_all) s->reset= 64; +// av_log(NULL, AV_LOG_DEBUG, "[JPEG-LS RESET] T=%i,%i,%i\n", s->T1, s->T2, s->T3); +} diff --git a/libavcodec/jpegls.h b/libavcodec/jpegls.h new file mode 100644 index 0000000000..2aba57ba63 --- /dev/null +++ b/libavcodec/jpegls.h @@ -0,0 +1,111 @@ +/* + * JPEG-LS common code + * Copyright (c) 2003 Michael Niedermayer + * Copyright (c) 2006 Konstantin Shishkov + * + * 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 + */ + +/** + * @file jpegls.h + * JPEG-LS common code. + */ + +#ifndef JPEGLS_H +#define JPEGLS_H + +#include "avcodec.h" + +typedef struct JpeglsContext{ + AVCodecContext *avctx; + AVFrame picture; +}JpeglsContext; + +typedef struct JLSState{ + int T1, T2, T3; + int A[367], B[367], C[365], N[367]; + int limit, reset, bpp, qbpp, maxval, range; + int near, twonear; + int run_index[3]; +}JLSState; + +extern const uint8_t ff_log2_run[32]; + +/** + * Calculate initial JPEG-LS parameters + */ +void ff_jpegls_init_state(JLSState *state); + +/** + * Calculate quantized gradient value, used for context determination + */ +static inline int ff_jpegls_quantize(JLSState *s, int v){ //FIXME optimize + if(v==0) return 0; + if(v < 0){ + if(v <= -s->T3) return -4; + if(v <= -s->T2) return -3; + if(v <= -s->T1) return -2; + if(v < -s->near) return -1; + return 0; + }else{ + if(v <= s->near) return 0; + if(v < s->T1) return 1; + if(v < s->T2) return 2; + if(v < s->T3) return 3; + return 4; + } +} + +/** + * Calculate JPEG-LS codec values + */ +void ff_jpegls_reset_coding_parameters(JLSState *s, int reset_all); + + +static inline void ff_jpegls_downscale_state(JLSState *state, int Q){ + if(state->N[Q] == state->reset){ + state->A[Q] >>=1; + state->B[Q] >>=1; + state->N[Q] >>=1; + } + state->N[Q]++; +} + +static inline int ff_jpegls_update_state_regular(JLSState *state, int Q, int err){ + state->A[Q] += FFABS(err); + err *= state->twonear; + state->B[Q] += err; + + ff_jpegls_downscale_state(state, Q); + + if(state->B[Q] <= -state->N[Q]) { + state->B[Q]= FFMAX(state->B[Q] + state->N[Q], 1-state->N[Q]); + if(state->C[Q] > -128) + state->C[Q]--; + }else if(state->B[Q] > 0){ + state->B[Q]= FFMIN(state->B[Q] - state->N[Q], 0); + if(state->C[Q] < 127) + state->C[Q]++; + } + + return err; +} + +#define R(a, i ) (bits == 8 ? ((uint8_t*)(a))[i] : ((uint16_t*)(a))[i] ) +#define W(a, i, v) (bits == 8 ? (((uint8_t*)(a))[i]=v) : (((uint16_t*)(a))[i]=v)) + +#endif /* JPEGLS_H */ diff --git a/libavcodec/jpeglsdec.c b/libavcodec/jpeglsdec.c new file mode 100644 index 0000000000..0d2b35858b --- /dev/null +++ b/libavcodec/jpeglsdec.c @@ -0,0 +1,361 @@ +/* + * JPEG-LS decoder + * Copyright (c) 2003 Michael Niedermayer + * Copyright (c) 2006 Konstantin Shishkov + * + * 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 + */ + +/** + * @file jpeglsdec.c + * JPEG-LS decoder. + */ + +#include "avcodec.h" +#include "bitstream.h" +#include "golomb.h" +#include "mjpeg.h" +#include "jpegls.h" +#include "jpeglsdec.h" + + +/* +* Uncomment this to significantly speed up decoding of broken JPEG-LS +* (or test broken JPEG-LS decoder) and slow down ordinary decoding a bit. +* +* There is no Golomb code with length >= 32 bits possible, so check and +* avoid situation of 32 zeros, FFmpeg Golomb decoder is painfully slow +* on this errors. +*/ +//#define JLS_BROKEN + + +/** + * Decode LSE block with initialization parameters + */ +int ff_jpegls_decode_lse(MJpegDecodeContext *s) +{ + int len, id; + + /* XXX: verify len field validity */ + len = get_bits(&s->gb, 16); + id = get_bits(&s->gb, 8); + + switch(id){ + case 1: + s->maxval= get_bits(&s->gb, 16); + s->t1= get_bits(&s->gb, 16); + s->t2= get_bits(&s->gb, 16); + s->t3= get_bits(&s->gb, 16); + s->reset= get_bits(&s->gb, 16); + +// ff_jpegls_reset_coding_parameters(s, 0); + //FIXME quant table? + break; + case 2: + case 3: + av_log(s->avctx, AV_LOG_ERROR, "palette not supported\n"); + return -1; + case 4: + av_log(s->avctx, AV_LOG_ERROR, "oversize image not supported\n"); + return -1; + default: + av_log(s->avctx, AV_LOG_ERROR, "invalid id %d\n", id); + return -1; + } +// av_log(s->avctx, AV_LOG_DEBUG, "ID=%i, T=%i,%i,%i\n", id, s->t1, s->t2, s->t3); + + return 0; +} + +/** + * Get context-dependent Golomb code, decode it and update context + */ +static inline int ls_get_code_regular(GetBitContext *gb, JLSState *state, int Q){ + int k, ret; + + for(k = 0; (state->N[Q] << k) < state->A[Q]; k++); + +#ifdef JLS_BROKEN + if(!show_bits_long(gb, 32))return -1; +#endif + ret = get_ur_golomb_jpegls(gb, k, state->limit, state->qbpp); + + /* decode mapped error */ + if(ret & 1) + ret = -((ret + 1) >> 1); + else + ret >>= 1; + + /* for NEAR=0, k=0 and 2*B[Q] <= - N[Q] mapping is reversed */ + if(!state->near && !k && (2 * state->B[Q] <= -state->N[Q])) + ret = -(ret + 1); + + ret= ff_jpegls_update_state_regular(state, Q, ret); + + return ret; +} + +/** + * Get Golomb code, decode it and update state for run termination + */ +static inline int ls_get_code_runterm(GetBitContext *gb, JLSState *state, int RItype, int limit_add){ + int k, ret, temp, map; + int Q = 365 + RItype; + + temp= state->A[Q]; + if(RItype) + temp += state->N[Q] >> 1; + + for(k = 0; (state->N[Q] << k) < temp; k++); + +#ifdef JLS_BROKEN + if(!show_bits_long(gb, 32))return -1; +#endif + ret = get_ur_golomb_jpegls(gb, k, state->limit - limit_add - 1, state->qbpp); + + /* decode mapped error */ + map = 0; + if(!k && (RItype || ret) && (2 * state->B[Q] < state->N[Q])) + map = 1; + ret += RItype + map; + + if(ret & 1){ + ret = map - ((ret + 1) >> 1); + state->B[Q]++; + } else { + ret = ret >> 1; + } + + /* update state */ + state->A[Q] += FFABS(ret) - RItype; + ret *= state->twonear; + ff_jpegls_downscale_state(state, Q); + + return ret; +} + +/** + * Decode one line of image + */ +static inline void ls_decode_line(JLSState *state, MJpegDecodeContext *s, void *last, void *dst, int last2, int w, int stride, int comp, int bits){ + int i, x = 0; + int Ra, Rb, Rc, Rd; + int D0, D1, D2; + + while(x < w) { + int err, pred; + + /* compute gradients */ + Ra = x ? R(dst, x - stride) : R(last, x); + Rb = R(last, x); + Rc = x ? R(last, x - stride) : last2; + Rd = (x >= w - stride) ? R(last, x) : R(last, x + stride); + D0 = Rd - Rb; + D1 = Rb - Rc; + D2 = Rc - Ra; + /* run mode */ + if((FFABS(D0) <= state->near) && (FFABS(D1) <= state->near) && (FFABS(D2) <= state->near)) { + int r; + int RItype; + + /* decode full runs while available */ + while(get_bits1(&s->gb)) { + int r; + r = 1 << ff_log2_run[state->run_index[comp]]; + if(x + r * stride > w) { + r = (w - x) / stride; + } + for(i = 0; i < r; i++) { + W(dst, x, Ra); + x += stride; + } + /* if EOL reached, we stop decoding */ + if(r != (1 << ff_log2_run[state->run_index[comp]])) + return; + if(state->run_index[comp] < 31) + state->run_index[comp]++; + if(x + stride > w) + return; + } + /* decode aborted run */ + r = ff_log2_run[state->run_index[comp]]; + if(r) + r = get_bits_long(&s->gb, r); + for(i = 0; i < r; i++) { + W(dst, x, Ra); + x += stride; + } + + /* decode run termination value */ + Rb = R(last, x); + RItype = (FFABS(Ra - Rb) <= state->near) ? 1 : 0; + err = ls_get_code_runterm(&s->gb, state, RItype, ff_log2_run[state->run_index[comp]]); + if(state->run_index[comp]) + state->run_index[comp]--; + + if(state->near && RItype){ + pred = Ra + err; + } else { + if(Rb < Ra) + pred = Rb - err; + else + pred = Rb + err; + } + } else { /* regular mode */ + int context, sign; + + context = ff_jpegls_quantize(state, D0) * 81 + ff_jpegls_quantize(state, D1) * 9 + ff_jpegls_quantize(state, D2); + pred = mid_pred(Ra, Ra + Rb - Rc, Rb); + + if(context < 0){ + context = -context; + sign = 1; + }else{ + sign = 0; + } + + if(sign){ + pred = av_clip(pred - state->C[context], 0, state->maxval); + err = -ls_get_code_regular(&s->gb, state, context); + } else { + pred = av_clip(pred + state->C[context], 0, state->maxval); + err = ls_get_code_regular(&s->gb, state, context); + } + + /* we have to do something more for near-lossless coding */ + pred += err; + } + if(state->near){ + if(pred < -state->near) + pred += state->range * state->twonear; + else if(pred > state->maxval + state->near) + pred -= state->range * state->twonear; + pred = av_clip(pred, 0, state->maxval); + } + + pred &= state->maxval; + W(dst, x, pred); + x += stride; + } +} + +int ff_jpegls_decode_picture(MJpegDecodeContext *s, int near, int point_transform, int ilv){ + int i, t = 0; + uint8_t *zero, *last, *cur; + JLSState *state; + int off = 0, stride = 1, width, shift; + + zero = av_mallocz(s->picture.linesize[0]); + last = zero; + cur = s->picture.data[0]; + + state = av_mallocz(sizeof(JLSState)); + /* initialize JPEG-LS state from JPEG parameters */ + state->near = near; + state->bpp = (s->bits < 2) ? 2 : s->bits; + state->maxval = s->maxval; + state->T1 = s->t1; + state->T2 = s->t2; + state->T3 = s->t3; + state->reset = s->reset; + ff_jpegls_reset_coding_parameters(state, 0); + ff_jpegls_init_state(state); + + if(s->bits <= 8) + shift = point_transform + (8 - s->bits); + else + shift = point_transform + (16 - s->bits); + +// av_log(s->avctx, AV_LOG_DEBUG, "JPEG-LS params: %ix%i NEAR=%i MV=%i T(%i,%i,%i) RESET=%i, LIMIT=%i, qbpp=%i, RANGE=%i\n",s->width,s->height,state->near,state->maxval,state->T1,state->T2,state->T3,state->reset,state->limit,state->qbpp, state->range); +// av_log(s->avctx, AV_LOG_DEBUG, "JPEG params: ILV=%i Pt=%i BPP=%i, scan = %i\n", ilv, point_transform, s->bits, s->cur_scan); + if(ilv == 0) { /* separate planes */ + off = s->cur_scan - 1; + stride = (s->nb_components > 1) ? 3 : 1; + width = s->width * stride; + cur += off; + for(i = 0; i < s->height; i++) { + if(s->bits <= 8){ + ls_decode_line(state, s, last, cur, t, width, stride, off, 8); + t = last[0]; + }else{ + ls_decode_line(state, s, last, cur, t, width, stride, off, 16); + t = *((uint16_t*)last); + } + last = cur; + cur += s->picture.linesize[0]; + + if (s->restart_interval && !--s->restart_count) { + align_get_bits(&s->gb); + skip_bits(&s->gb, 16); /* skip RSTn */ + } + } + } else if(ilv == 1) { /* line interleaving */ + int j; + int Rc[3] = {0, 0, 0}; + memset(cur, 0, s->picture.linesize[0]); + width = s->width * 3; + for(i = 0; i < s->height; i++) { + for(j = 0; j < 3; j++) { + ls_decode_line(state, s, last + j, cur + j, Rc[j], width, 3, j, 8); + Rc[j] = last[j]; + + if (s->restart_interval && !--s->restart_count) { + align_get_bits(&s->gb); + skip_bits(&s->gb, 16); /* skip RSTn */ + } + } + last = cur; + cur += s->picture.linesize[0]; + } + } else if(ilv == 2) { /* sample interleaving */ + av_log(s->avctx, AV_LOG_ERROR, "Sample interleaved images are not supported.\n"); + av_free(state); + av_free(zero); + return -1; + } + + if(shift){ /* we need to do point transform or normalize samples */ + int x, w; + + w = s->width * s->nb_components; + + if(s->bits <= 8){ + uint8_t *src = s->picture.data[0]; + + for(i = 0; i < s->height; i++){ + for(x = off; x < w; x+= stride){ + src[x] <<= shift; + } + src += s->picture.linesize[0]; + } + }else{ + uint16_t *src = (uint16_t*) s->picture.data[0]; + + for(i = 0; i < s->height; i++){ + for(x = 0; x < w; x++){ + src[x] <<= shift; + } + src += s->picture.linesize[0]/2; + } + } + } + av_free(state); + av_free(zero); + + return 0; +} diff --git a/libavcodec/jpeglsdec.h b/libavcodec/jpeglsdec.h new file mode 100644 index 0000000000..d953aa4a78 --- /dev/null +++ b/libavcodec/jpeglsdec.h @@ -0,0 +1,40 @@ +/* + * JPEG-LS decoder + * Copyright (c) 2003 Michael Niedermayer + * Copyright (c) 2006 Konstantin Shishkov + * + * 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 + */ + +/** + * @file jpeglsdec.h + * JPEG-LS decoder. + */ + +#ifndef JPEGLSDEC_H +#define JPEGLSDEC_H + +#include "mjpeg.h" + +/** + * Decode LSE block with initialization parameters + */ +int ff_jpegls_decode_lse(MJpegDecodeContext *s); + +int ff_jpegls_decode_picture(MJpegDecodeContext *s, int near, int point_transform, int ilv); + +#endif /* JPEGLSDEC_H */ diff --git a/libavcodec/jpeglsenc.c b/libavcodec/jpeglsenc.c new file mode 100644 index 0000000000..d8e8bda763 --- /dev/null +++ b/libavcodec/jpeglsenc.c @@ -0,0 +1,392 @@ +/* + * JPEG-LS encoder + * Copyright (c) 2003 Michael Niedermayer + * Copyright (c) 2006 Konstantin Shishkov + * + * 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 + */ + +/** + * @file jpeglsenc.c + * JPEG-LS encoder. + */ + +#include "avcodec.h" +#include "bitstream.h" +#include "golomb.h" +#include "mjpeg.h" +#include "jpegls.h" + + +/** + * Encode error from regular symbol + */ +static inline void ls_encode_regular(JLSState *state, PutBitContext *pb, int Q, int err){ + int k; + int val; + int map; + + for(k = 0; (state->N[Q] << k) < state->A[Q]; k++); + + map = !state->near && !k && (2 * state->B[Q] <= -state->N[Q]); + + if(err < 0) + err += state->range; + if(err >= ((state->range + 1) >> 1)) { + err -= state->range; + val = 2 * FFABS(err) - 1 - map; + } else + val = 2 * err + map; + + set_ur_golomb_jpegls(pb, val, k, state->limit, state->qbpp); + + ff_jpegls_update_state_regular(state, Q, err); +} + +/** + * Encode error from run termination + */ +static inline void ls_encode_runterm(JLSState *state, PutBitContext *pb, int RItype, int err, int limit_add){ + int k; + int val, map; + int Q = 365 + RItype; + int temp; + + temp = state->A[Q]; + if(RItype) + temp += state->N[Q] >> 1; + for(k = 0; (state->N[Q] << k) < temp; k++); + map = 0; + if(!k && err && (2 * state->B[Q] < state->N[Q])) + map = 1; + + if(err < 0) + val = - (2 * err) - 1 - RItype + map; + else + val = 2 * err - RItype - map; + set_ur_golomb_jpegls(pb, val, k, state->limit - limit_add - 1, state->qbpp); + + if(err < 0) + state->B[Q]++; + state->A[Q] += (val + 1 - RItype) >> 1; + + ff_jpegls_downscale_state(state, Q); +} + +/** + * Encode run value as specified by JPEG-LS standard + */ +static inline void ls_encode_run(JLSState *state, PutBitContext *pb, int run, int comp, int trail){ + while(run >= (1 << ff_log2_run[state->run_index[comp]])){ + put_bits(pb, 1, 1); + run -= 1 << ff_log2_run[state->run_index[comp]]; + if(state->run_index[comp] < 31) + state->run_index[comp]++; + } + /* if hit EOL, encode another full run, else encode aborted run */ + if(!trail && run) { + put_bits(pb, 1, 1); + }else if(trail){ + put_bits(pb, 1, 0); + if(ff_log2_run[state->run_index[comp]]) + put_bits(pb, ff_log2_run[state->run_index[comp]], run); + } +} + +/** + * Encode one line of image + */ +static inline void ls_encode_line(JLSState *state, PutBitContext *pb, void *last, void *cur, int last2, int w, int stride, int comp, int bits){ + int x = 0; + int Ra, Rb, Rc, Rd; + int D0, D1, D2; + + while(x < w) { + int err, pred, sign; + + /* compute gradients */ + Ra = x ? R(cur, x - stride) : R(last, x); + Rb = R(last, x); + Rc = x ? R(last, x - stride) : last2; + Rd = (x >= w - stride) ? R(last, x) : R(last, x + stride); + D0 = Rd - Rb; + D1 = Rb - Rc; + D2 = Rc - Ra; + + /* run mode */ + if((FFABS(D0) <= state->near) && (FFABS(D1) <= state->near) && (FFABS(D2) <= state->near)) { + int RUNval, RItype, run; + + run = 0; + RUNval = Ra; + while(x < w && (FFABS(R(cur, x) - RUNval) <= state->near)){ + run++; + W(cur, x, Ra); + x += stride; + } + ls_encode_run(state, pb, run, comp, x < w); + if(x >= w) + return; + Rb = R(last, x); + RItype = (FFABS(Ra - Rb) <= state->near); + pred = RItype ? Ra : Rb; + err = R(cur, x) - pred; + + if(!RItype && Ra > Rb) + err = -err; + + if(state->near){ + if(err > 0) + err = (state->near + err) / state->twonear; + else + err = -(state->near - err) / state->twonear; + + if(RItype || (Rb >= Ra)) + Ra = av_clip(pred + err * state->twonear, 0, state->maxval); + else + Ra = av_clip(pred - err * state->twonear, 0, state->maxval); + W(cur, x, Ra); + } + if(err < 0) + err += state->range; + if(err >= ((state->range + 1) >> 1)) + err -= state->range; + + ls_encode_runterm(state, pb, RItype, err, ff_log2_run[state->run_index[comp]]); + + if(state->run_index[comp] > 0) + state->run_index[comp]--; + } else { /* regular mode */ + int context; + + context = ff_jpegls_quantize(state, D0) * 81 + ff_jpegls_quantize(state, D1) * 9 + ff_jpegls_quantize(state, D2); + pred = mid_pred(Ra, Ra + Rb - Rc, Rb); + + if(context < 0){ + context = -context; + sign = 1; + pred = av_clip(pred - state->C[context], 0, state->maxval); + err = pred - R(cur, x); + }else{ + sign = 0; + pred = av_clip(pred + state->C[context], 0, state->maxval); + err = R(cur, x) - pred; + } + + if(state->near){ + if(err > 0) + err = (state->near + err) / state->twonear; + else + err = -(state->near - err) / state->twonear; + if(!sign) + Ra = av_clip(pred + err * state->twonear, 0, state->maxval); + else + Ra = av_clip(pred - err * state->twonear, 0, state->maxval); + W(cur, x, Ra); + } + + ls_encode_regular(state, pb, context, err); + } + x += stride; + } +} + +static void ls_store_lse(JLSState *state, PutBitContext *pb){ + /* Test if we have default params and don't need to store LSE */ + JLSState state2; + memset(&state2, 0, sizeof(JLSState)); + state2.bpp = state->bpp; + state2.near = state->near; + ff_jpegls_reset_coding_parameters(&state2, 1); + if(state->T1 == state2.T1 && state->T2 == state2.T2 && state->T3 == state2.T3 && state->reset == state2.reset) + return; + /* store LSE type 1 */ + put_marker(pb, LSE); + put_bits(pb, 16, 13); + put_bits(pb, 8, 1); + put_bits(pb, 16, state->maxval); + put_bits(pb, 16, state->T1); + put_bits(pb, 16, state->T2); + put_bits(pb, 16, state->T3); + put_bits(pb, 16, state->reset); +} + +static int encode_picture_ls(AVCodecContext *avctx, unsigned char *buf, int buf_size, void *data){ + JpeglsContext * const s = avctx->priv_data; + AVFrame *pict = data; + AVFrame * const p= (AVFrame*)&s->picture; + const int near = avctx->prediction_method; + PutBitContext pb, pb2; + GetBitContext gb; + uint8_t *buf2, *zero, *cur, *last; + JLSState *state; + int i, size; + int comps; + + buf2 = av_malloc(buf_size); + + init_put_bits(&pb, buf, buf_size); + init_put_bits(&pb2, buf2, buf_size); + + *p = *pict; + p->pict_type= FF_I_TYPE; + p->key_frame= 1; + + if(avctx->pix_fmt == PIX_FMT_GRAY8 || avctx->pix_fmt == PIX_FMT_GRAY16) + comps = 1; + else + comps = 3; + + /* write our own JPEG header, can't use mjpeg_picture_header */ + put_marker(&pb, SOI); + put_marker(&pb, SOF48); + put_bits(&pb, 16, 8 + comps * 3); // header size depends on components + put_bits(&pb, 8, (avctx->pix_fmt == PIX_FMT_GRAY16) ? 16 : 8); // bpp + put_bits(&pb, 16, avctx->height); + put_bits(&pb, 16, avctx->width); + put_bits(&pb, 8, comps); // components + for(i = 1; i <= comps; i++) { + put_bits(&pb, 8, i); // component ID + put_bits(&pb, 8, 0x11); // subsampling: none + put_bits(&pb, 8, 0); // Tiq, used by JPEG-LS ext + } + + put_marker(&pb, SOS); + put_bits(&pb, 16, 6 + comps * 2); + put_bits(&pb, 8, comps); + for(i = 1; i <= comps; i++) { + put_bits(&pb, 8, i); // component ID + put_bits(&pb, 8, 0); // mapping index: none + } + put_bits(&pb, 8, near); + put_bits(&pb, 8, (comps > 1) ? 1 : 0); // interleaving: 0 - plane, 1 - line + put_bits(&pb, 8, 0); // point transform: none + + state = av_mallocz(sizeof(JLSState)); + /* initialize JPEG-LS state from JPEG parameters */ + state->near = near; + state->bpp = (avctx->pix_fmt == PIX_FMT_GRAY16) ? 16 : 8; + ff_jpegls_reset_coding_parameters(state, 0); + ff_jpegls_init_state(state); + + ls_store_lse(state, &pb); + + zero = av_mallocz(p->linesize[0]); + last = zero; + cur = p->data[0]; + if(avctx->pix_fmt == PIX_FMT_GRAY8){ + int t = 0; + + for(i = 0; i < avctx->height; i++) { + ls_encode_line(state, &pb2, last, cur, t, avctx->width, 1, 0, 8); + t = last[0]; + last = cur; + cur += p->linesize[0]; + } + }else if(avctx->pix_fmt == PIX_FMT_GRAY16){ + int t = 0; + + for(i = 0; i < avctx->height; i++) { + ls_encode_line(state, &pb2, last, cur, t, avctx->width, 1, 0, 16); + t = *((uint16_t*)last); + last = cur; + cur += p->linesize[0]; + } + }else if(avctx->pix_fmt == PIX_FMT_RGB24){ + int j, width; + int Rc[3] = {0, 0, 0}; + + width = avctx->width * 3; + for(i = 0; i < avctx->height; i++) { + for(j = 0; j < 3; j++) { + ls_encode_line(state, &pb2, last + j, cur + j, Rc[j], width, 3, j, 8); + Rc[j] = last[j]; + } + last = cur; + cur += s->picture.linesize[0]; + } + }else if(avctx->pix_fmt == PIX_FMT_BGR24){ + int j, width; + int Rc[3] = {0, 0, 0}; + + width = avctx->width * 3; + for(i = 0; i < avctx->height; i++) { + for(j = 2; j >= 0; j--) { + ls_encode_line(state, &pb2, last + j, cur + j, Rc[j], width, 3, j, 8); + Rc[j] = last[j]; + } + last = cur; + cur += s->picture.linesize[0]; + } + } + + av_free(zero); + av_free(state); + + // the specification says that after doing 0xff escaping unused bits in the + // last byte must be set to 0, so just append 7 "optional" zero-bits to + // avoid special-casing. + put_bits(&pb2, 7, 0); + size = put_bits_count(&pb2); + flush_put_bits(&pb2); + /* do escape coding */ + init_get_bits(&gb, buf2, size); + size -= 7; + while(get_bits_count(&gb) < size){ + int v; + v = get_bits(&gb, 8); + put_bits(&pb, 8, v); + if(v == 0xFF){ + v = get_bits(&gb, 7); + put_bits(&pb, 8, v); + } + } + align_put_bits(&pb); + av_free(buf2); + + /* End of image */ + put_marker(&pb, EOI); + flush_put_bits(&pb); + + emms_c(); + + return put_bits_count(&pb) >> 3; +} + +static int encode_init_ls(AVCodecContext *ctx) { + JpeglsContext *c = (JpeglsContext*)ctx->priv_data; + + c->avctx = ctx; + ctx->coded_frame = &c->picture; + + if(ctx->pix_fmt != PIX_FMT_GRAY8 && ctx->pix_fmt != PIX_FMT_GRAY16 && ctx->pix_fmt != PIX_FMT_RGB24 && ctx->pix_fmt != PIX_FMT_BGR24){ + av_log(ctx, AV_LOG_ERROR, "Only grayscale and RGB24/BGR24 images are supported\n"); + return -1; + } + return 0; +} + +AVCodec jpegls_encoder = { //FIXME avoid MPV_* lossless jpeg shouldnt need them + "jpegls", + CODEC_TYPE_VIDEO, + CODEC_ID_JPEGLS, + sizeof(JpeglsContext), + encode_init_ls, + encode_picture_ls, + NULL, + .pix_fmts= (enum PixelFormat[]){PIX_FMT_BGR24, PIX_FMT_RGB24, PIX_FMT_GRAY8, PIX_FMT_GRAY16, -1}, +}; diff --git a/libavcodec/mjpeg.c b/libavcodec/mjpeg.c index eb95e4092c..bc32865f71 100644 --- a/libavcodec/mjpeg.c +++ b/libavcodec/mjpeg.c @@ -37,6 +37,8 @@ #include "dsputil.h" #include "mpegvideo.h" #include "bytestream.h" +#include "mjpeg.h" +#include "jpeglsdec.h" /* use two quantizer tables (one for luminance and one for chrominance) */ /* not yet working */ @@ -54,88 +56,6 @@ typedef struct MJpegContext { uint16_t huff_code_ac_chrominance[256]; } MJpegContext; -/* JPEG marker codes */ -typedef enum { - /* start of frame */ - SOF0 = 0xc0, /* baseline */ - SOF1 = 0xc1, /* extended sequential, huffman */ - SOF2 = 0xc2, /* progressive, huffman */ - SOF3 = 0xc3, /* lossless, huffman */ - - SOF5 = 0xc5, /* differential sequential, huffman */ - SOF6 = 0xc6, /* differential progressive, huffman */ - SOF7 = 0xc7, /* differential lossless, huffman */ - JPG = 0xc8, /* reserved for JPEG extension */ - SOF9 = 0xc9, /* extended sequential, arithmetic */ - SOF10 = 0xca, /* progressive, arithmetic */ - SOF11 = 0xcb, /* lossless, arithmetic */ - - SOF13 = 0xcd, /* differential sequential, arithmetic */ - SOF14 = 0xce, /* differential progressive, arithmetic */ - SOF15 = 0xcf, /* differential lossless, arithmetic */ - - DHT = 0xc4, /* define huffman tables */ - - DAC = 0xcc, /* define arithmetic-coding conditioning */ - - /* restart with modulo 8 count "m" */ - RST0 = 0xd0, - RST1 = 0xd1, - RST2 = 0xd2, - RST3 = 0xd3, - RST4 = 0xd4, - RST5 = 0xd5, - RST6 = 0xd6, - RST7 = 0xd7, - - SOI = 0xd8, /* start of image */ - EOI = 0xd9, /* end of image */ - SOS = 0xda, /* start of scan */ - DQT = 0xdb, /* define quantization tables */ - DNL = 0xdc, /* define number of lines */ - DRI = 0xdd, /* define restart interval */ - DHP = 0xde, /* define hierarchical progression */ - EXP = 0xdf, /* expand reference components */ - - APP0 = 0xe0, - APP1 = 0xe1, - APP2 = 0xe2, - APP3 = 0xe3, - APP4 = 0xe4, - APP5 = 0xe5, - APP6 = 0xe6, - APP7 = 0xe7, - APP8 = 0xe8, - APP9 = 0xe9, - APP10 = 0xea, - APP11 = 0xeb, - APP12 = 0xec, - APP13 = 0xed, - APP14 = 0xee, - APP15 = 0xef, - - JPG0 = 0xf0, - JPG1 = 0xf1, - JPG2 = 0xf2, - JPG3 = 0xf3, - JPG4 = 0xf4, - JPG5 = 0xf5, - JPG6 = 0xf6, - SOF48 = 0xf7, ///< JPEG-LS - LSE = 0xf8, ///< JPEG-LS extension parameters - JPG9 = 0xf9, - JPG10 = 0xfa, - JPG11 = 0xfb, - JPG12 = 0xfc, - JPG13 = 0xfd, - - COM = 0xfe, /* comment */ - - TEM = 0x01, /* temporary private use for arithmetic coding */ - - /* 0x02 -> 0xbf reserved */ -} JPEG_MARKER; - #if 0 /* These are the sample quantization tables given in JPEG spec section K.1. * The spec says that the values given produce "good" quality, and @@ -301,12 +221,6 @@ void mjpeg_close(MpegEncContext *s) } #ifdef CONFIG_ENCODERS -static inline void put_marker(PutBitContext *p, int code) -{ - put_bits(p, 8, 0xff); - put_bits(p, 8, code); -} - /* table_class: 0 = DC coef, 1 = AC coefs */ static int put_huffman_table(MpegEncContext *s, int table_class, int table_id, const uint8_t *bits_table, const uint8_t *value_table) @@ -834,73 +748,6 @@ static int encode_picture_lossless(AVCodecContext *avctx, unsigned char *buf, in /******************************************/ /* decoding */ -#define MAX_COMPONENTS 4 - -typedef struct MJpegDecodeContext { - AVCodecContext *avctx; - GetBitContext gb; - - int start_code; /* current start code */ - int buffer_size; - uint8_t *buffer; - - int16_t quant_matrixes[4][64]; - VLC vlcs[2][4]; - int qscale[4]; ///< quantizer scale calculated from quant_matrixes - - int org_height; /* size given at codec init */ - int first_picture; /* true if decoding first picture */ - int interlaced; /* true if interlaced */ - int bottom_field; /* true if bottom field */ - int lossless; - int ls; - int progressive; - int rgb; - int rct; /* standard rct */ - int pegasus_rct; /* pegasus reversible colorspace transform */ - int bits; /* bits per component */ - - int maxval; - int near; ///< near lossless bound (si 0 for lossless) - int t1,t2,t3; - int reset; ///< context halfing intervall ?rename - - int width, height; - int mb_width, mb_height; - int nb_components; - int component_id[MAX_COMPONENTS]; - int h_count[MAX_COMPONENTS]; /* horizontal and vertical count for each component */ - int v_count[MAX_COMPONENTS]; - int comp_index[MAX_COMPONENTS]; - int dc_index[MAX_COMPONENTS]; - int ac_index[MAX_COMPONENTS]; - int nb_blocks[MAX_COMPONENTS]; - int h_scount[MAX_COMPONENTS]; - int v_scount[MAX_COMPONENTS]; - int h_max, v_max; /* maximum h and v counts */ - int quant_index[4]; /* quant table index for each component */ - int last_dc[MAX_COMPONENTS]; /* last DEQUANTIZED dc (XXX: am I right to do that ?) */ - AVFrame picture; /* picture structure */ - int linesize[MAX_COMPONENTS]; ///< linesize << interlaced - int8_t *qscale_table; - DECLARE_ALIGNED_8(DCTELEM, block[64]); - ScanTable scantable; - DSPContext dsp; - - int restart_interval; - int restart_count; - - int buggy_avid; - int cs_itu601; - int interlace_polarity; - - int mjpb_skiptosod; - - int cur_scan; /* current scan, used by JPEG-LS */ -} MJpegDecodeContext; - -#include "jpeg_ls.c" //FIXME make jpeg-ls more independent - static int mjpeg_decode_dht(MJpegDecodeContext *s); static int build_vlc(VLC *vlc, const uint8_t *bits_table, const uint8_t *val_table, @@ -1664,7 +1511,7 @@ static int mjpeg_decode_sos(MJpegDecodeContext *s) // for(){ // reset_ls_coding_parameters(s, 0); - ls_decode_picture(s, predictor, point_transform, ilv); + ff_jpegls_decode_picture(s, predictor, point_transform, ilv); }else{ if(s->rgb){ if(ljpeg_decode_rgb_scan(s, predictor, point_transform) < 0) @@ -2095,7 +1942,7 @@ static int mjpeg_decode_frame(AVCodecContext *avctx, return -1; break; case LSE: - if (decode_lse(s) < 0) + if (ff_jpegls_decode_lse(s) < 0) return -1; break; case EOI: diff --git a/libavcodec/mjpeg.h b/libavcodec/mjpeg.h new file mode 100644 index 0000000000..ab546edd18 --- /dev/null +++ b/libavcodec/mjpeg.h @@ -0,0 +1,195 @@ +/* + * MJPEG encoder and decoder + * Copyright (c) 2000, 2001 Fabrice Bellard. + * Copyright (c) 2003 Alex Beregszaszi + * Copyright (c) 2003-2004 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 + * + * Support for external huffman table, various fixes (AVID workaround), + * aspecting, new decode_frame mechanism and apple mjpeg-b support + * by Alex Beregszaszi + */ + +/** + * @file mjpeg.h + * MJPEG encoder and decoder. + */ + +#ifndef MJPEG_H +#define MJPEG_H + +#include "avcodec.h" +#include "bitstream.h" +#include "dsputil.h" +#include "mpegvideo.h" + + +/* JPEG marker codes */ +typedef enum { + /* start of frame */ + SOF0 = 0xc0, /* baseline */ + SOF1 = 0xc1, /* extended sequential, huffman */ + SOF2 = 0xc2, /* progressive, huffman */ + SOF3 = 0xc3, /* lossless, huffman */ + + SOF5 = 0xc5, /* differential sequential, huffman */ + SOF6 = 0xc6, /* differential progressive, huffman */ + SOF7 = 0xc7, /* differential lossless, huffman */ + JPG = 0xc8, /* reserved for JPEG extension */ + SOF9 = 0xc9, /* extended sequential, arithmetic */ + SOF10 = 0xca, /* progressive, arithmetic */ + SOF11 = 0xcb, /* lossless, arithmetic */ + + SOF13 = 0xcd, /* differential sequential, arithmetic */ + SOF14 = 0xce, /* differential progressive, arithmetic */ + SOF15 = 0xcf, /* differential lossless, arithmetic */ + + DHT = 0xc4, /* define huffman tables */ + + DAC = 0xcc, /* define arithmetic-coding conditioning */ + + /* restart with modulo 8 count "m" */ + RST0 = 0xd0, + RST1 = 0xd1, + RST2 = 0xd2, + RST3 = 0xd3, + RST4 = 0xd4, + RST5 = 0xd5, + RST6 = 0xd6, + RST7 = 0xd7, + + SOI = 0xd8, /* start of image */ + EOI = 0xd9, /* end of image */ + SOS = 0xda, /* start of scan */ + DQT = 0xdb, /* define quantization tables */ + DNL = 0xdc, /* define number of lines */ + DRI = 0xdd, /* define restart interval */ + DHP = 0xde, /* define hierarchical progression */ + EXP = 0xdf, /* expand reference components */ + + APP0 = 0xe0, + APP1 = 0xe1, + APP2 = 0xe2, + APP3 = 0xe3, + APP4 = 0xe4, + APP5 = 0xe5, + APP6 = 0xe6, + APP7 = 0xe7, + APP8 = 0xe8, + APP9 = 0xe9, + APP10 = 0xea, + APP11 = 0xeb, + APP12 = 0xec, + APP13 = 0xed, + APP14 = 0xee, + APP15 = 0xef, + + JPG0 = 0xf0, + JPG1 = 0xf1, + JPG2 = 0xf2, + JPG3 = 0xf3, + JPG4 = 0xf4, + JPG5 = 0xf5, + JPG6 = 0xf6, + SOF48 = 0xf7, ///< JPEG-LS + LSE = 0xf8, ///< JPEG-LS extension parameters + JPG9 = 0xf9, + JPG10 = 0xfa, + JPG11 = 0xfb, + JPG12 = 0xfc, + JPG13 = 0xfd, + + COM = 0xfe, /* comment */ + + TEM = 0x01, /* temporary private use for arithmetic coding */ + + /* 0x02 -> 0xbf reserved */ +} JPEG_MARKER; + +static inline void put_marker(PutBitContext *p, int code) +{ + put_bits(p, 8, 0xff); + put_bits(p, 8, code); +} + +#define MAX_COMPONENTS 4 + +typedef struct MJpegDecodeContext { + AVCodecContext *avctx; + GetBitContext gb; + + int start_code; /* current start code */ + int buffer_size; + uint8_t *buffer; + + int16_t quant_matrixes[4][64]; + VLC vlcs[2][4]; + int qscale[4]; ///< quantizer scale calculated from quant_matrixes + + int org_height; /* size given at codec init */ + int first_picture; /* true if decoding first picture */ + int interlaced; /* true if interlaced */ + int bottom_field; /* true if bottom field */ + int lossless; + int ls; + int progressive; + int rgb; + int rct; /* standard rct */ + int pegasus_rct; /* pegasus reversible colorspace transform */ + int bits; /* bits per component */ + + int maxval; + int near; ///< near lossless bound (si 0 for lossless) + int t1,t2,t3; + int reset; ///< context halfing intervall ?rename + + int width, height; + int mb_width, mb_height; + int nb_components; + int component_id[MAX_COMPONENTS]; + int h_count[MAX_COMPONENTS]; /* horizontal and vertical count for each component */ + int v_count[MAX_COMPONENTS]; + int comp_index[MAX_COMPONENTS]; + int dc_index[MAX_COMPONENTS]; + int ac_index[MAX_COMPONENTS]; + int nb_blocks[MAX_COMPONENTS]; + int h_scount[MAX_COMPONENTS]; + int v_scount[MAX_COMPONENTS]; + int h_max, v_max; /* maximum h and v counts */ + int quant_index[4]; /* quant table index for each component */ + int last_dc[MAX_COMPONENTS]; /* last DEQUANTIZED dc (XXX: am I right to do that ?) */ + AVFrame picture; /* picture structure */ + int linesize[MAX_COMPONENTS]; ///< linesize << interlaced + int8_t *qscale_table; + DECLARE_ALIGNED_8(DCTELEM, block[64]); + ScanTable scantable; + DSPContext dsp; + + int restart_interval; + int restart_count; + + int buggy_avid; + int cs_itu601; + int interlace_polarity; + + int mjpb_skiptosod; + + int cur_scan; /* current scan, used by JPEG-LS */ +} MJpegDecodeContext; + +#endif /* MJPEG_H */ |