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-rw-r--r--libavcodec/j2kenc.c1055
1 files changed, 1055 insertions, 0 deletions
diff --git a/libavcodec/j2kenc.c b/libavcodec/j2kenc.c
new file mode 100644
index 0000000000..ddb0b686cb
--- /dev/null
+++ b/libavcodec/j2kenc.c
@@ -0,0 +1,1055 @@
+/*
+ * JPEG2000 image encoder
+ * Copyright (c) 2007 Kamil Nowosad
+ *
+ * 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
+ */
+
+/**
+ * JPEG2000 image encoder
+ * @file
+ * @author Kamil Nowosad
+ */
+
+#include <float.h>
+#include "avcodec.h"
+#include "internal.h"
+#include "bytestream.h"
+#include "jpeg2000.h"
+#include "libavutil/common.h"
+
+#define NMSEDEC_BITS 7
+#define NMSEDEC_FRACBITS (NMSEDEC_BITS-1)
+#define WMSEDEC_SHIFT 13 ///< must be >= 13
+#define LAMBDA_SCALE (100000000LL << (WMSEDEC_SHIFT - 13))
+
+static int lut_nmsedec_ref [1<<NMSEDEC_BITS],
+ lut_nmsedec_ref0[1<<NMSEDEC_BITS],
+ lut_nmsedec_sig [1<<NMSEDEC_BITS],
+ lut_nmsedec_sig0[1<<NMSEDEC_BITS];
+
+static const int dwt_norms[2][4][10] = { // [dwt_type][band][rlevel] (multiplied by 10000)
+ {{10000, 19650, 41770, 84030, 169000, 338400, 676900, 1353000, 2706000, 5409000},
+ {20220, 39890, 83550, 170400, 342700, 686300, 1373000, 2746000, 5490000},
+ {20220, 39890, 83550, 170400, 342700, 686300, 1373000, 2746000, 5490000},
+ {20800, 38650, 83070, 171800, 347100, 695900, 1393000, 2786000, 5572000}},
+
+ {{10000, 15000, 27500, 53750, 106800, 213400, 426700, 853300, 1707000, 3413000},
+ {10380, 15920, 29190, 57030, 113300, 226400, 452500, 904800, 1809000},
+ {10380, 15920, 29190, 57030, 113300, 226400, 452500, 904800, 1809000},
+ { 7186, 9218, 15860, 30430, 60190, 120100, 240000, 479700, 959300}}
+};
+
+typedef struct {
+ Jpeg2000Component *comp;
+} Jpeg2000Tile;
+
+typedef struct {
+ AVCodecContext *avctx;
+ const AVFrame *picture;
+
+ int width, height; ///< image width and height
+ uint8_t cbps[4]; ///< bits per sample in particular components
+ int chroma_shift[2];
+ uint8_t planar;
+ int ncomponents;
+ int tile_width, tile_height; ///< tile size
+ int numXtiles, numYtiles;
+
+ uint8_t *buf_start;
+ uint8_t *buf;
+ uint8_t *buf_end;
+ int bit_index;
+
+ int64_t lambda;
+
+ Jpeg2000CodingStyle codsty;
+ Jpeg2000QuantStyle qntsty;
+
+ Jpeg2000Tile *tile;
+} Jpeg2000EncoderContext;
+
+
+/* debug */
+#if 0
+#undef ifprintf
+#undef printf
+
+static void nspaces(FILE *fd, int n)
+{
+ while(n--) putc(' ', fd);
+}
+
+static void printcomp(Jpeg2000Component *comp)
+{
+ int i;
+ for (i = 0; i < comp->y1 - comp->y0; i++)
+ ff_jpeg2000_printv(comp->i_data + i * (comp->x1 - comp->x0), comp->x1 - comp->x0);
+}
+
+static void dump(Jpeg2000EncoderContext *s, FILE *fd)
+{
+ int tileno, compno, reslevelno, bandno, precno;
+ fprintf(fd, "XSiz = %d, YSiz = %d, tile_width = %d, tile_height = %d\n"
+ "numXtiles = %d, numYtiles = %d, ncomponents = %d\n"
+ "tiles:\n",
+ s->width, s->height, s->tile_width, s->tile_height,
+ s->numXtiles, s->numYtiles, s->ncomponents);
+ for (tileno = 0; tileno < s->numXtiles * s->numYtiles; tileno++){
+ Jpeg2000Tile *tile = s->tile + tileno;
+ nspaces(fd, 2);
+ fprintf(fd, "tile %d:\n", tileno);
+ for(compno = 0; compno < s->ncomponents; compno++){
+ Jpeg2000Component *comp = tile->comp + compno;
+ nspaces(fd, 4);
+ fprintf(fd, "component %d:\n", compno);
+ nspaces(fd, 4);
+ fprintf(fd, "x0 = %d, x1 = %d, y0 = %d, y1 = %d\n",
+ comp->x0, comp->x1, comp->y0, comp->y1);
+ for(reslevelno = 0; reslevelno < s->nreslevels; reslevelno++){
+ Jpeg2000ResLevel *reslevel = comp->reslevel + reslevelno;
+ nspaces(fd, 6);
+ fprintf(fd, "reslevel %d:\n", reslevelno);
+ nspaces(fd, 6);
+ fprintf(fd, "x0 = %d, x1 = %d, y0 = %d, y1 = %d, nbands = %d\n",
+ reslevel->x0, reslevel->x1, reslevel->y0,
+ reslevel->y1, reslevel->nbands);
+ for(bandno = 0; bandno < reslevel->nbands; bandno++){
+ Jpeg2000Band *band = reslevel->band + bandno;
+ nspaces(fd, 8);
+ fprintf(fd, "band %d:\n", bandno);
+ nspaces(fd, 8);
+ fprintf(fd, "x0 = %d, x1 = %d, y0 = %d, y1 = %d,"
+ "codeblock_width = %d, codeblock_height = %d cblknx = %d cblkny = %d\n",
+ band->x0, band->x1,
+ band->y0, band->y1,
+ band->codeblock_width, band->codeblock_height,
+ band->cblknx, band->cblkny);
+ for (precno = 0; precno < reslevel->num_precincts_x * reslevel->num_precincts_y; precno++){
+ Jpeg2000Prec *prec = band->prec + precno;
+ nspaces(fd, 10);
+ fprintf(fd, "prec %d:\n", precno);
+ nspaces(fd, 10);
+ fprintf(fd, "xi0 = %d, xi1 = %d, yi0 = %d, yi1 = %d\n",
+ prec->xi0, prec->xi1, prec->yi0, prec->yi1);
+ }
+ }
+ }
+ }
+ }
+}
+#endif
+
+/* bitstream routines */
+
+/** put n times val bit */
+static void put_bits(Jpeg2000EncoderContext *s, int val, int n) // TODO: optimize
+{
+ while (n-- > 0){
+ if (s->bit_index == 8)
+ {
+ s->bit_index = *s->buf == 0xff;
+ *(++s->buf) = 0;
+ }
+ *s->buf |= val << (7 - s->bit_index++);
+ }
+}
+
+/** put n least significant bits of a number num */
+static void put_num(Jpeg2000EncoderContext *s, int num, int n)
+{
+ while(--n >= 0)
+ put_bits(s, (num >> n) & 1, 1);
+}
+
+/** flush the bitstream */
+static void j2k_flush(Jpeg2000EncoderContext *s)
+{
+ if (s->bit_index){
+ s->bit_index = 0;
+ s->buf++;
+ }
+}
+
+/* tag tree routines */
+
+/** code the value stored in node */
+static void tag_tree_code(Jpeg2000EncoderContext *s, Jpeg2000TgtNode *node, int threshold)
+{
+ Jpeg2000TgtNode *stack[30];
+ int sp = 1, curval = 0;
+ stack[0] = node;
+
+ node = node->parent;
+ while(node){
+ if (node->vis){
+ curval = node->val;
+ break;
+ }
+ node->vis++;
+ stack[sp++] = node;
+ node = node->parent;
+ }
+ while(--sp >= 0){
+ if (stack[sp]->val >= threshold){
+ put_bits(s, 0, threshold - curval);
+ break;
+ }
+ put_bits(s, 0, stack[sp]->val - curval);
+ put_bits(s, 1, 1);
+ curval = stack[sp]->val;
+ }
+}
+
+/** update the value in node */
+static void tag_tree_update(Jpeg2000TgtNode *node)
+{
+ int lev = 0;
+ while (node->parent){
+ if (node->parent->val <= node->val)
+ break;
+ node->parent->val = node->val;
+ node = node->parent;
+ lev++;
+ }
+}
+
+static int put_siz(Jpeg2000EncoderContext *s)
+{
+ int i;
+
+ if (s->buf_end - s->buf < 40 + 3 * s->ncomponents)
+ return -1;
+
+ bytestream_put_be16(&s->buf, JPEG2000_SIZ);
+ bytestream_put_be16(&s->buf, 38 + 3 * s->ncomponents); // Lsiz
+ bytestream_put_be16(&s->buf, 0); // Rsiz
+ bytestream_put_be32(&s->buf, s->width); // width
+ bytestream_put_be32(&s->buf, s->height); // height
+ bytestream_put_be32(&s->buf, 0); // X0Siz
+ bytestream_put_be32(&s->buf, 0); // Y0Siz
+
+ bytestream_put_be32(&s->buf, s->tile_width); // XTSiz
+ bytestream_put_be32(&s->buf, s->tile_height); // YTSiz
+ bytestream_put_be32(&s->buf, 0); // XT0Siz
+ bytestream_put_be32(&s->buf, 0); // YT0Siz
+ bytestream_put_be16(&s->buf, s->ncomponents); // CSiz
+
+ for (i = 0; i < s->ncomponents; i++){ // Ssiz_i XRsiz_i, YRsiz_i
+ bytestream_put_byte(&s->buf, 7);
+ bytestream_put_byte(&s->buf, i?1<<s->chroma_shift[0]:1);
+ bytestream_put_byte(&s->buf, i?1<<s->chroma_shift[1]:1);
+ }
+ return 0;
+}
+
+static int put_cod(Jpeg2000EncoderContext *s)
+{
+ Jpeg2000CodingStyle *codsty = &s->codsty;
+
+ if (s->buf_end - s->buf < 14)
+ return -1;
+
+ bytestream_put_be16(&s->buf, JPEG2000_COD);
+ bytestream_put_be16(&s->buf, 12); // Lcod
+ bytestream_put_byte(&s->buf, 0); // Scod
+ // SGcod
+ bytestream_put_byte(&s->buf, 0); // progression level
+ bytestream_put_be16(&s->buf, 1); // num of layers
+ if(s->avctx->pix_fmt == AV_PIX_FMT_YUV444P){
+ bytestream_put_byte(&s->buf, 2); // ICT
+ }else{
+ bytestream_put_byte(&s->buf, 0); // unspecified
+ }
+ // SPcod
+ bytestream_put_byte(&s->buf, codsty->nreslevels - 1); // num of decomp. levels
+ bytestream_put_byte(&s->buf, codsty->log2_cblk_width-2); // cblk width
+ bytestream_put_byte(&s->buf, codsty->log2_cblk_height-2); // cblk height
+ bytestream_put_byte(&s->buf, 0); // cblk style
+ bytestream_put_byte(&s->buf, codsty->transform == FF_DWT53); // transformation
+ return 0;
+}
+
+static int put_qcd(Jpeg2000EncoderContext *s, int compno)
+{
+ int i, size;
+ Jpeg2000CodingStyle *codsty = &s->codsty;
+ Jpeg2000QuantStyle *qntsty = &s->qntsty;
+
+ if (qntsty->quantsty == JPEG2000_QSTY_NONE)
+ size = 4 + 3 * (codsty->nreslevels-1);
+ else // QSTY_SE
+ size = 5 + 6 * (codsty->nreslevels-1);
+
+ if (s->buf_end - s->buf < size + 2)
+ return -1;
+
+ bytestream_put_be16(&s->buf, JPEG2000_QCD);
+ bytestream_put_be16(&s->buf, size); // LQcd
+ bytestream_put_byte(&s->buf, (qntsty->nguardbits << 5) | qntsty->quantsty); // Sqcd
+ if (qntsty->quantsty == JPEG2000_QSTY_NONE)
+ for (i = 0; i < codsty->nreslevels * 3 - 2; i++)
+ bytestream_put_byte(&s->buf, qntsty->expn[i] << 3);
+ else // QSTY_SE
+ for (i = 0; i < codsty->nreslevels * 3 - 2; i++)
+ bytestream_put_be16(&s->buf, (qntsty->expn[i] << 11) | qntsty->mant[i]);
+ return 0;
+}
+
+static uint8_t *put_sot(Jpeg2000EncoderContext *s, int tileno)
+{
+ uint8_t *psotptr;
+
+ if (s->buf_end - s->buf < 12)
+ return NULL;
+
+ bytestream_put_be16(&s->buf, JPEG2000_SOT);
+ bytestream_put_be16(&s->buf, 10); // Lsot
+ bytestream_put_be16(&s->buf, tileno); // Isot
+
+ psotptr = s->buf;
+ bytestream_put_be32(&s->buf, 0); // Psot (filled in later)
+
+ bytestream_put_byte(&s->buf, 0); // TPsot
+ bytestream_put_byte(&s->buf, 1); // TNsot
+ return psotptr;
+}
+
+/**
+ * compute the sizes of tiles, resolution levels, bands, etc.
+ * allocate memory for them
+ * divide the input image into tile-components
+ */
+static int init_tiles(Jpeg2000EncoderContext *s)
+{
+ int tileno, tilex, tiley, compno;
+ Jpeg2000CodingStyle *codsty = &s->codsty;
+ Jpeg2000QuantStyle *qntsty = &s->qntsty;
+
+ s->numXtiles = ff_jpeg2000_ceildiv(s->width, s->tile_width);
+ s->numYtiles = ff_jpeg2000_ceildiv(s->height, s->tile_height);
+
+ s->tile = av_malloc_array(s->numXtiles, s->numYtiles * sizeof(Jpeg2000Tile));
+ if (!s->tile)
+ return AVERROR(ENOMEM);
+ for (tileno = 0, tiley = 0; tiley < s->numYtiles; tiley++)
+ for (tilex = 0; tilex < s->numXtiles; tilex++, tileno++){
+ Jpeg2000Tile *tile = s->tile + tileno;
+
+ tile->comp = av_mallocz_array(s->ncomponents, sizeof(Jpeg2000Component));
+ if (!tile->comp)
+ return AVERROR(ENOMEM);
+ for (compno = 0; compno < s->ncomponents; compno++){
+ Jpeg2000Component *comp = tile->comp + compno;
+ int ret, i, j;
+
+ comp->coord[0][0] = comp->coord_o[0][0] = tilex * s->tile_width;
+ comp->coord[0][1] = comp->coord_o[0][1] = FFMIN((tilex+1)*s->tile_width, s->width);
+ comp->coord[1][0] = comp->coord_o[1][0] = tiley * s->tile_height;
+ comp->coord[1][1] = comp->coord_o[1][1] = FFMIN((tiley+1)*s->tile_height, s->height);
+ if (compno > 0)
+ for (i = 0; i < 2; i++)
+ for (j = 0; j < 2; j++)
+ comp->coord[i][j] = comp->coord_o[i][j] = ff_jpeg2000_ceildivpow2(comp->coord[i][j], s->chroma_shift[i]);
+
+ if (ret = ff_jpeg2000_init_component(comp,
+ codsty,
+ qntsty,
+ s->cbps[compno],
+ compno?1<<s->chroma_shift[0]:1,
+ compno?1<<s->chroma_shift[1]:1,
+ s->avctx
+ ))
+ return ret;
+ }
+ }
+ return 0;
+}
+
+static void copy_frame(Jpeg2000EncoderContext *s)
+{
+ int tileno, compno, i, y, x;
+ uint8_t *line;
+ for (tileno = 0; tileno < s->numXtiles * s->numYtiles; tileno++){
+ Jpeg2000Tile *tile = s->tile + tileno;
+ if (s->planar){
+ for (compno = 0; compno < s->ncomponents; compno++){
+ Jpeg2000Component *comp = tile->comp + compno;
+ int *dst = comp->i_data;
+ line = s->picture->data[compno]
+ + comp->coord[1][0] * s->picture->linesize[compno]
+ + comp->coord[0][0];
+ for (y = comp->coord[1][0]; y < comp->coord[1][1]; y++){
+ uint8_t *ptr = line;
+ for (x = comp->coord[0][0]; x < comp->coord[0][1]; x++)
+ *dst++ = *ptr++ - (1 << 7);
+ line += s->picture->linesize[compno];
+ }
+ }
+ } else{
+ line = s->picture->data[0] + tile->comp[0].coord[1][0] * s->picture->linesize[0]
+ + tile->comp[0].coord[0][0] * s->ncomponents;
+
+ i = 0;
+ for (y = tile->comp[0].coord[1][0]; y < tile->comp[0].coord[1][1]; y++){
+ uint8_t *ptr = line;
+ for (x = tile->comp[0].coord[0][0]; x < tile->comp[0].coord[0][1]; x++, i++){
+ for (compno = 0; compno < s->ncomponents; compno++){
+ tile->comp[compno].i_data[i] = *ptr++ - (1 << 7);
+ }
+ }
+ line += s->picture->linesize[0];
+ }
+ }
+ }
+}
+
+static void init_quantization(Jpeg2000EncoderContext *s)
+{
+ int compno, reslevelno, bandno;
+ Jpeg2000QuantStyle *qntsty = &s->qntsty;
+ Jpeg2000CodingStyle *codsty = &s->codsty;
+
+ for (compno = 0; compno < s->ncomponents; compno++){
+ int gbandno = 0;
+ for (reslevelno = 0; reslevelno < codsty->nreslevels; reslevelno++){
+ int nbands, lev = codsty->nreslevels - reslevelno - 1;
+ nbands = reslevelno ? 3 : 1;
+ for (bandno = 0; bandno < nbands; bandno++, gbandno++){
+ int expn, mant;
+
+ if (codsty->transform == FF_DWT97_INT){
+ int bandpos = bandno + (reslevelno>0),
+ ss = 81920000 / dwt_norms[0][bandpos][lev],
+ log = av_log2(ss);
+ mant = (11 - log < 0 ? ss >> log - 11 : ss << 11 - log) & 0x7ff;
+ expn = s->cbps[compno] - log + 13;
+ } else
+ expn = ((bandno&2)>>1) + (reslevelno>0) + s->cbps[compno];
+
+ qntsty->expn[gbandno] = expn;
+ qntsty->mant[gbandno] = mant;
+ }
+ }
+ }
+}
+
+static void init_luts(void)
+{
+ int i, a,
+ mask = ~((1<<NMSEDEC_FRACBITS)-1);
+
+ for (i = 0; i < (1 << NMSEDEC_BITS); i++){
+ lut_nmsedec_sig[i] = FFMAX(6*i - (9<<NMSEDEC_FRACBITS-1) << 12-NMSEDEC_FRACBITS, 0);
+ lut_nmsedec_sig0[i] = FFMAX((i*i + (1<<NMSEDEC_FRACBITS-1) & mask) << 1, 0);
+
+ a = (i >> (NMSEDEC_BITS-2)&2) + 1;
+ lut_nmsedec_ref[i] = FFMAX((-2*i + (1<<NMSEDEC_FRACBITS) + a*i - (a*a<<NMSEDEC_FRACBITS-2))
+ << 13-NMSEDEC_FRACBITS, 0);
+ lut_nmsedec_ref0[i] = FFMAX(((i*i + (1-4*i << NMSEDEC_FRACBITS-1) + (1<<2*NMSEDEC_FRACBITS)) & mask)
+ << 1, 0);
+ }
+}
+
+/* tier-1 routines */
+static int getnmsedec_sig(int x, int bpno)
+{
+ if (bpno > NMSEDEC_FRACBITS)
+ return lut_nmsedec_sig[(x >> (bpno - NMSEDEC_FRACBITS)) & ((1 << NMSEDEC_BITS) - 1)];
+ return lut_nmsedec_sig0[x & ((1 << NMSEDEC_BITS) - 1)];
+}
+
+static int getnmsedec_ref(int x, int bpno)
+{
+ if (bpno > NMSEDEC_FRACBITS)
+ return lut_nmsedec_ref[(x >> (bpno - NMSEDEC_FRACBITS)) & ((1 << NMSEDEC_BITS) - 1)];
+ return lut_nmsedec_ref0[x & ((1 << NMSEDEC_BITS) - 1)];
+}
+
+static void encode_sigpass(Jpeg2000T1Context *t1, int width, int height, int bandno, int *nmsedec, int bpno)
+{
+ int y0, x, y, mask = 1 << (bpno + NMSEDEC_FRACBITS);
+ for (y0 = 0; y0 < height; y0 += 4)
+ for (x = 0; x < width; x++)
+ for (y = y0; y < height && y < y0+4; y++){
+ if (!(t1->flags[y+1][x+1] & JPEG2000_T1_SIG) && (t1->flags[y+1][x+1] & JPEG2000_T1_SIG_NB)){
+ int ctxno = ff_jpeg2000_getsigctxno(t1->flags[y+1][x+1], bandno),
+ bit = t1->data[y][x] & mask ? 1 : 0;
+ ff_mqc_encode(&t1->mqc, t1->mqc.cx_states + ctxno, bit);
+ if (bit){
+ int xorbit;
+ int ctxno = ff_jpeg2000_getsgnctxno(t1->flags[y+1][x+1], &xorbit);
+ ff_mqc_encode(&t1->mqc, t1->mqc.cx_states + ctxno, (t1->flags[y+1][x+1] >> 15) ^ xorbit);
+ *nmsedec += getnmsedec_sig(t1->data[y][x], bpno + NMSEDEC_FRACBITS);
+ ff_jpeg2000_set_significance(t1, x, y, t1->flags[y+1][x+1] >> 15);
+ }
+ t1->flags[y+1][x+1] |= JPEG2000_T1_VIS;
+ }
+ }
+}
+
+static void encode_refpass(Jpeg2000T1Context *t1, int width, int height, int *nmsedec, int bpno)
+{
+ int y0, x, y, mask = 1 << (bpno + NMSEDEC_FRACBITS);
+ for (y0 = 0; y0 < height; y0 += 4)
+ for (x = 0; x < width; x++)
+ for (y = y0; y < height && y < y0+4; y++)
+ if ((t1->flags[y+1][x+1] & (JPEG2000_T1_SIG | JPEG2000_T1_VIS)) == JPEG2000_T1_SIG){
+ int ctxno = ff_jpeg2000_getrefctxno(t1->flags[y+1][x+1]);
+ *nmsedec += getnmsedec_ref(t1->data[y][x], bpno + NMSEDEC_FRACBITS);
+ ff_mqc_encode(&t1->mqc, t1->mqc.cx_states + ctxno, t1->data[y][x] & mask ? 1:0);
+ t1->flags[y+1][x+1] |= JPEG2000_T1_REF;
+ }
+}
+
+static void encode_clnpass(Jpeg2000T1Context *t1, int width, int height, int bandno, int *nmsedec, int bpno)
+{
+ int y0, x, y, mask = 1 << (bpno + NMSEDEC_FRACBITS);
+ for (y0 = 0; y0 < height; y0 += 4)
+ for (x = 0; x < width; x++){
+ if (y0 + 3 < height && !(
+ (t1->flags[y0+1][x+1] & (JPEG2000_T1_SIG_NB | JPEG2000_T1_VIS | JPEG2000_T1_SIG)) ||
+ (t1->flags[y0+2][x+1] & (JPEG2000_T1_SIG_NB | JPEG2000_T1_VIS | JPEG2000_T1_SIG)) ||
+ (t1->flags[y0+3][x+1] & (JPEG2000_T1_SIG_NB | JPEG2000_T1_VIS | JPEG2000_T1_SIG)) ||
+ (t1->flags[y0+4][x+1] & (JPEG2000_T1_SIG_NB | JPEG2000_T1_VIS | JPEG2000_T1_SIG))))
+ {
+ // aggregation mode
+ int rlen;
+ for (rlen = 0; rlen < 4; rlen++)
+ if (t1->data[y0+rlen][x] & mask)
+ break;
+ ff_mqc_encode(&t1->mqc, t1->mqc.cx_states + MQC_CX_RL, rlen != 4);
+ if (rlen == 4)
+ continue;
+ ff_mqc_encode(&t1->mqc, t1->mqc.cx_states + MQC_CX_UNI, rlen >> 1);
+ ff_mqc_encode(&t1->mqc, t1->mqc.cx_states + MQC_CX_UNI, rlen & 1);
+ for (y = y0 + rlen; y < y0 + 4; y++){
+ if (!(t1->flags[y+1][x+1] & (JPEG2000_T1_SIG | JPEG2000_T1_VIS))){
+ int ctxno = ff_jpeg2000_getsigctxno(t1->flags[y+1][x+1], bandno);
+ if (y > y0 + rlen)
+ ff_mqc_encode(&t1->mqc, t1->mqc.cx_states + ctxno, t1->data[y][x] & mask ? 1:0);
+ if (t1->data[y][x] & mask){ // newly significant
+ int xorbit;
+ int ctxno = ff_jpeg2000_getsgnctxno(t1->flags[y+1][x+1], &xorbit);
+ *nmsedec += getnmsedec_sig(t1->data[y][x], bpno + NMSEDEC_FRACBITS);
+ ff_mqc_encode(&t1->mqc, t1->mqc.cx_states + ctxno, (t1->flags[y+1][x+1] >> 15) ^ xorbit);
+ ff_jpeg2000_set_significance(t1, x, y, t1->flags[y+1][x+1] >> 15);
+ }
+ }
+ t1->flags[y+1][x+1] &= ~JPEG2000_T1_VIS;
+ }
+ } else{
+ for (y = y0; y < y0 + 4 && y < height; y++){
+ if (!(t1->flags[y+1][x+1] & (JPEG2000_T1_SIG | JPEG2000_T1_VIS))){
+ int ctxno = ff_jpeg2000_getsigctxno(t1->flags[y+1][x+1], bandno);
+ ff_mqc_encode(&t1->mqc, t1->mqc.cx_states + ctxno, t1->data[y][x] & mask ? 1:0);
+ if (t1->data[y][x] & mask){ // newly significant
+ int xorbit;
+ int ctxno = ff_jpeg2000_getsgnctxno(t1->flags[y+1][x+1], &xorbit);
+ *nmsedec += getnmsedec_sig(t1->data[y][x], bpno + NMSEDEC_FRACBITS);
+ ff_mqc_encode(&t1->mqc, t1->mqc.cx_states + ctxno, (t1->flags[y+1][x+1] >> 15) ^ xorbit);
+ ff_jpeg2000_set_significance(t1, x, y, t1->flags[y+1][x+1] >> 15);
+ }
+ }
+ t1->flags[y+1][x+1] &= ~JPEG2000_T1_VIS;
+ }
+ }
+ }
+}
+
+static void encode_cblk(Jpeg2000EncoderContext *s, Jpeg2000T1Context *t1, Jpeg2000Cblk *cblk, Jpeg2000Tile *tile,
+ int width, int height, int bandpos, int lev)
+{
+ int pass_t = 2, passno, x, y, max=0, nmsedec, bpno;
+ int64_t wmsedec = 0;
+
+ for (y = 0; y < height+2; y++)
+ memset(t1->flags[y], 0, (width+2)*sizeof(int));
+
+ for (y = 0; y < height; y++){
+ for (x = 0; x < width; x++){
+ if (t1->data[y][x] < 0){
+ t1->flags[y+1][x+1] |= JPEG2000_T1_SGN;
+ t1->data[y][x] = -t1->data[y][x];
+ }
+ max = FFMAX(max, t1->data[y][x]);
+ }
+ }
+
+ if (max == 0){
+ cblk->nonzerobits = 0;
+ bpno = 0;
+ } else{
+ cblk->nonzerobits = av_log2(max) + 1 - NMSEDEC_FRACBITS;
+ bpno = cblk->nonzerobits - 1;
+ }
+
+ ff_mqc_initenc(&t1->mqc, cblk->data);
+
+ for (passno = 0; bpno >= 0; passno++){
+ nmsedec=0;
+
+ switch(pass_t){
+ case 0: encode_sigpass(t1, width, height, bandpos, &nmsedec, bpno);
+ break;
+ case 1: encode_refpass(t1, width, height, &nmsedec, bpno);
+ break;
+ case 2: encode_clnpass(t1, width, height, bandpos, &nmsedec, bpno);
+ break;
+ }
+
+ cblk->passes[passno].rate = 3 + ff_mqc_length(&t1->mqc);
+ wmsedec += (int64_t)nmsedec << (2*bpno);
+ cblk->passes[passno].disto = wmsedec;
+
+ if (++pass_t == 3){
+ pass_t = 0;
+ bpno--;
+ }
+ }
+ cblk->npasses = passno;
+ cblk->ninclpasses = passno;
+
+ // TODO: optional flush on each pass
+ cblk->passes[passno-1].rate = ff_mqc_flush(&t1->mqc);
+}
+
+/* tier-2 routines: */
+
+static void putnumpasses(Jpeg2000EncoderContext *s, int n)
+{
+ if (n == 1)
+ put_num(s, 0, 1);
+ else if (n == 2)
+ put_num(s, 2, 2);
+ else if (n <= 5)
+ put_num(s, 0xc | (n-3), 4);
+ else if (n <= 36)
+ put_num(s, 0x1e0 | (n-6), 9);
+ else
+ put_num(s, 0xff80 | (n-37), 16);
+}
+
+
+static int encode_packet(Jpeg2000EncoderContext *s, Jpeg2000ResLevel *rlevel, int precno,
+ uint8_t *expn, int numgbits)
+{
+ int bandno, empty = 1;
+
+ // init bitstream
+ *s->buf = 0;
+ s->bit_index = 0;
+
+ // header
+
+ // is the packet empty?
+ for (bandno = 0; bandno < rlevel->nbands; bandno++){
+ if (rlevel->band[bandno].coord[0][0] < rlevel->band[bandno].coord[0][1]
+ && rlevel->band[bandno].coord[1][0] < rlevel->band[bandno].coord[1][1]){
+ empty = 0;
+ break;
+ }
+ }
+
+ put_bits(s, !empty, 1);
+ if (empty){
+ j2k_flush(s);
+ return 0;
+ }
+
+ for (bandno = 0; bandno < rlevel->nbands; bandno++){
+ Jpeg2000Band *band = rlevel->band + bandno;
+ Jpeg2000Prec *prec = band->prec + precno;
+ int yi, xi, pos;
+ int cblknw = prec->nb_codeblocks_width;
+
+ if (band->coord[0][0] == band->coord[0][1]
+ || band->coord[1][0] == band->coord[1][1])
+ continue;
+
+ for (pos=0, yi = 0; yi < prec->nb_codeblocks_height; yi++){
+ for (xi = 0; xi < cblknw; xi++, pos++){
+ prec->cblkincl[pos].val = prec->cblk[yi * cblknw + xi].ninclpasses == 0;
+ tag_tree_update(prec->cblkincl + pos);
+ prec->zerobits[pos].val = expn[bandno] + numgbits - 1 - prec->cblk[yi * cblknw + xi].nonzerobits;
+ tag_tree_update(prec->zerobits + pos);
+ }
+ }
+
+ for (pos=0, yi = 0; yi < prec->nb_codeblocks_height; yi++){
+ for (xi = 0; xi < cblknw; xi++, pos++){
+ int pad = 0, llen, length;
+ Jpeg2000Cblk *cblk = prec->cblk + yi * cblknw + xi;
+
+ if (s->buf_end - s->buf < 20) // approximately
+ return -1;
+
+ // inclusion information
+ tag_tree_code(s, prec->cblkincl + pos, 1);
+ if (!cblk->ninclpasses)
+ continue;
+ // zerobits information
+ tag_tree_code(s, prec->zerobits + pos, 100);
+ // number of passes
+ putnumpasses(s, cblk->ninclpasses);
+
+ length = cblk->passes[cblk->ninclpasses-1].rate;
+ llen = av_log2(length) - av_log2(cblk->ninclpasses) - 2;
+ if (llen < 0){
+ pad = -llen;
+ llen = 0;
+ }
+ // length of code block
+ put_bits(s, 1, llen);
+ put_bits(s, 0, 1);
+ put_num(s, length, av_log2(length)+1+pad);
+ }
+ }
+ }
+ j2k_flush(s);
+ for (bandno = 0; bandno < rlevel->nbands; bandno++){
+ Jpeg2000Band *band = rlevel->band + bandno;
+ Jpeg2000Prec *prec = band->prec + precno;
+ int yi, cblknw = prec->nb_codeblocks_width;
+ for (yi =0; yi < prec->nb_codeblocks_height; yi++){
+ int xi;
+ for (xi = 0; xi < cblknw; xi++){
+ Jpeg2000Cblk *cblk = prec->cblk + yi * cblknw + xi;
+ if (cblk->ninclpasses){
+ if (s->buf_end - s->buf < cblk->passes[cblk->ninclpasses-1].rate)
+ return -1;
+ bytestream_put_buffer(&s->buf, cblk->data, cblk->passes[cblk->ninclpasses-1].rate);
+ }
+ }
+ }
+ }
+ return 0;
+}
+
+static int encode_packets(Jpeg2000EncoderContext *s, Jpeg2000Tile *tile, int tileno)
+{
+ int compno, reslevelno, ret;
+ Jpeg2000CodingStyle *codsty = &s->codsty;
+ Jpeg2000QuantStyle *qntsty = &s->qntsty;
+
+ av_log(s->avctx, AV_LOG_DEBUG, "tier2\n");
+ // lay-rlevel-comp-pos progression
+ for (reslevelno = 0; reslevelno < codsty->nreslevels; reslevelno++){
+ for (compno = 0; compno < s->ncomponents; compno++){
+ int precno;
+ Jpeg2000ResLevel *reslevel = s->tile[tileno].comp[compno].reslevel + reslevelno;
+ for (precno = 0; precno < reslevel->num_precincts_x * reslevel->num_precincts_y; precno++){
+ if (ret = encode_packet(s, reslevel, precno, qntsty->expn + (reslevelno ? 3*reslevelno-2 : 0),
+ qntsty->nguardbits))
+ return ret;
+ }
+ }
+ }
+ av_log(s->avctx, AV_LOG_DEBUG, "after tier2\n");
+ return 0;
+}
+
+static int getcut(Jpeg2000Cblk *cblk, int64_t lambda, int dwt_norm)
+{
+ int passno, res = 0;
+ for (passno = 0; passno < cblk->npasses; passno++){
+ int dr;
+ int64_t dd;
+
+ dr = cblk->passes[passno].rate
+ - (res ? cblk->passes[res-1].rate:0);
+ dd = cblk->passes[passno].disto
+ - (res ? cblk->passes[res-1].disto:0);
+
+ if (((dd * dwt_norm) >> WMSEDEC_SHIFT) * dwt_norm >= dr * lambda)
+ res = passno+1;
+ }
+ return res;
+}
+
+static void truncpasses(Jpeg2000EncoderContext *s, Jpeg2000Tile *tile)
+{
+ int precno, compno, reslevelno, bandno, cblkno, lev;
+ Jpeg2000CodingStyle *codsty = &s->codsty;
+
+ for (compno = 0; compno < s->ncomponents; compno++){
+ Jpeg2000Component *comp = tile->comp + compno;
+
+ for (reslevelno = 0, lev = codsty->nreslevels-1; reslevelno < codsty->nreslevels; reslevelno++, lev--){
+ Jpeg2000ResLevel *reslevel = comp->reslevel + reslevelno;
+
+ for (precno = 0; precno < reslevel->num_precincts_x * reslevel->num_precincts_y; precno++){
+ for (bandno = 0; bandno < reslevel->nbands ; bandno++){
+ int bandpos = bandno + (reslevelno > 0);
+ Jpeg2000Band *band = reslevel->band + bandno;
+ Jpeg2000Prec *prec = band->prec + precno;
+
+ for (cblkno = 0; cblkno < prec->nb_codeblocks_height * prec->nb_codeblocks_width; cblkno++){
+ Jpeg2000Cblk *cblk = prec->cblk + cblkno;
+
+ cblk->ninclpasses = getcut(cblk, s->lambda,
+ (int64_t)dwt_norms[codsty->transform == FF_DWT53][bandpos][lev] * (int64_t)band->i_stepsize >> 15);
+ }
+ }
+ }
+ }
+ }
+}
+
+static int encode_tile(Jpeg2000EncoderContext *s, Jpeg2000Tile *tile, int tileno)
+{
+ int compno, reslevelno, bandno, ret;
+ Jpeg2000T1Context t1;
+ Jpeg2000CodingStyle *codsty = &s->codsty;
+ for (compno = 0; compno < s->ncomponents; compno++){
+ Jpeg2000Component *comp = s->tile[tileno].comp + compno;
+
+ av_log(s->avctx, AV_LOG_DEBUG,"dwt\n");
+ if (ret = ff_dwt_encode(&comp->dwt, comp->i_data))
+ return ret;
+ av_log(s->avctx, AV_LOG_DEBUG,"after dwt -> tier1\n");
+
+ for (reslevelno = 0; reslevelno < codsty->nreslevels; reslevelno++){
+ Jpeg2000ResLevel *reslevel = comp->reslevel + reslevelno;
+
+ for (bandno = 0; bandno < reslevel->nbands ; bandno++){
+ Jpeg2000Band *band = reslevel->band + bandno;
+ Jpeg2000Prec *prec = band->prec; // we support only 1 precinct per band ATM in the encoder
+ int cblkx, cblky, cblkno=0, xx0, x0, xx1, y0, yy0, yy1, bandpos;
+ yy0 = bandno == 0 ? 0 : comp->reslevel[reslevelno-1].coord[1][1] - comp->reslevel[reslevelno-1].coord[1][0];
+ y0 = yy0;
+ yy1 = FFMIN(ff_jpeg2000_ceildivpow2(band->coord[1][0] + 1, band->log2_cblk_height) << band->log2_cblk_height,
+ band->coord[1][1]) - band->coord[1][0] + yy0;
+
+ if (band->coord[0][0] == band->coord[0][1] || band->coord[1][0] == band->coord[1][1])
+ continue;
+
+ bandpos = bandno + (reslevelno > 0);
+
+ for (cblky = 0; cblky < prec->nb_codeblocks_height; cblky++){
+ if (reslevelno == 0 || bandno == 1)
+ xx0 = 0;
+ else
+ xx0 = comp->reslevel[reslevelno-1].coord[0][1] - comp->reslevel[reslevelno-1].coord[0][0];
+ x0 = xx0;
+ xx1 = FFMIN(ff_jpeg2000_ceildivpow2(band->coord[0][0] + 1, band->log2_cblk_width) << band->log2_cblk_width,
+ band->coord[0][1]) - band->coord[0][0] + xx0;
+
+ for (cblkx = 0; cblkx < prec->nb_codeblocks_width; cblkx++, cblkno++){
+ int y, x;
+ if (codsty->transform == FF_DWT53){
+ for (y = yy0; y < yy1; y++){
+ int *ptr = t1.data[y-yy0];
+ for (x = xx0; x < xx1; x++){
+ *ptr++ = comp->i_data[(comp->coord[0][1] - comp->coord[0][0]) * y + x] << NMSEDEC_FRACBITS;
+ }
+ }
+ } else{
+ for (y = yy0; y < yy1; y++){
+ int *ptr = t1.data[y-yy0];
+ for (x = xx0; x < xx1; x++){
+ *ptr = (comp->i_data[(comp->coord[0][1] - comp->coord[0][0]) * y + x]);
+ *ptr = (int64_t)*ptr * (int64_t)(16384 * 65536 / band->i_stepsize) >> 15 - NMSEDEC_FRACBITS;
+ ptr++;
+ }
+ }
+ }
+ encode_cblk(s, &t1, prec->cblk + cblkno, tile, xx1 - xx0, yy1 - yy0,
+ bandpos, codsty->nreslevels - reslevelno - 1);
+ xx0 = xx1;
+ xx1 = FFMIN(xx1 + (1 << band->log2_cblk_width), band->coord[0][1] - band->coord[0][0] + x0);
+ }
+ yy0 = yy1;
+ yy1 = FFMIN(yy1 + (1 << band->log2_cblk_height), band->coord[1][1] - band->coord[1][0] + y0);
+ }
+ }
+ }
+ av_log(s->avctx, AV_LOG_DEBUG, "after tier1\n");
+ }
+
+ av_log(s->avctx, AV_LOG_DEBUG, "rate control\n");
+ truncpasses(s, tile);
+ if (ret = encode_packets(s, tile, tileno))
+ return ret;
+ av_log(s->avctx, AV_LOG_DEBUG, "after rate control\n");
+ return 0;
+}
+
+static void cleanup(Jpeg2000EncoderContext *s)
+{
+ int tileno, compno;
+ Jpeg2000CodingStyle *codsty = &s->codsty;
+
+ for (tileno = 0; tileno < s->numXtiles * s->numYtiles; tileno++){
+ for (compno = 0; compno < s->ncomponents; compno++){
+ Jpeg2000Component *comp = s->tile[tileno].comp + compno;
+ ff_jpeg2000_cleanup(comp, codsty);
+ }
+ av_freep(&s->tile[tileno].comp);
+ }
+ av_freep(&s->tile);
+}
+
+static void reinit(Jpeg2000EncoderContext *s)
+{
+ int tileno, compno;
+ for (tileno = 0; tileno < s->numXtiles * s->numYtiles; tileno++){
+ Jpeg2000Tile *tile = s->tile + tileno;
+ for (compno = 0; compno < s->ncomponents; compno++)
+ ff_jpeg2000_reinit(tile->comp + compno, &s->codsty);
+ }
+}
+
+static int encode_frame(AVCodecContext *avctx, AVPacket *pkt,
+ const AVFrame *pict, int *got_packet)
+{
+ int tileno, ret;
+ Jpeg2000EncoderContext *s = avctx->priv_data;
+
+ if ((ret = ff_alloc_packet2(avctx, pkt, avctx->width*avctx->height*9 + FF_MIN_BUFFER_SIZE)) < 0)
+ return ret;
+
+ // init:
+ s->buf = s->buf_start = pkt->data;
+ s->buf_end = pkt->data + pkt->size;
+
+ s->picture = pict;
+
+ s->lambda = s->picture->quality * LAMBDA_SCALE;
+
+ copy_frame(s);
+ reinit(s);
+
+ if (s->buf_end - s->buf < 2)
+ return -1;
+ bytestream_put_be16(&s->buf, JPEG2000_SOC);
+ if (ret = put_siz(s))
+ return ret;
+ if (ret = put_cod(s))
+ return ret;
+ if (ret = put_qcd(s, 0))
+ return ret;
+
+ for (tileno = 0; tileno < s->numXtiles * s->numYtiles; tileno++){
+ uint8_t *psotptr;
+ if (!(psotptr = put_sot(s, tileno)))
+ return -1;
+ if (s->buf_end - s->buf < 2)
+ return -1;
+ bytestream_put_be16(&s->buf, JPEG2000_SOD);
+ if (ret = encode_tile(s, s->tile + tileno, tileno))
+ return ret;
+ bytestream_put_be32(&psotptr, s->buf - psotptr + 6);
+ }
+ if (s->buf_end - s->buf < 2)
+ return -1;
+ bytestream_put_be16(&s->buf, JPEG2000_EOC);
+
+ av_log(s->avctx, AV_LOG_DEBUG, "end\n");
+ pkt->size = s->buf - s->buf_start;
+ pkt->flags |= AV_PKT_FLAG_KEY;
+ *got_packet = 1;
+
+ return 0;
+}
+
+static av_cold int j2kenc_init(AVCodecContext *avctx)
+{
+ int i, ret;
+ Jpeg2000EncoderContext *s = avctx->priv_data;
+ Jpeg2000CodingStyle *codsty = &s->codsty;
+ Jpeg2000QuantStyle *qntsty = &s->qntsty;
+
+ s->avctx = avctx;
+ av_log(s->avctx, AV_LOG_DEBUG, "init\n");
+
+ // defaults:
+ // TODO: implement setting non-standard precinct size
+ memset(codsty->log2_prec_widths , 15, sizeof(codsty->log2_prec_widths ));
+ memset(codsty->log2_prec_heights, 15, sizeof(codsty->log2_prec_heights));
+ codsty->nreslevels2decode=
+ codsty->nreslevels = 7;
+ codsty->log2_cblk_width = 4;
+ codsty->log2_cblk_height = 4;
+ codsty->transform = avctx->prediction_method ? FF_DWT53 : FF_DWT97_INT;
+
+ qntsty->nguardbits = 1;
+
+ s->tile_width = 256;
+ s->tile_height = 256;
+
+ if (codsty->transform == FF_DWT53)
+ qntsty->quantsty = JPEG2000_QSTY_NONE;
+ else
+ qntsty->quantsty = JPEG2000_QSTY_SE;
+
+ s->width = avctx->width;
+ s->height = avctx->height;
+
+ for (i = 0; i < 3; i++)
+ s->cbps[i] = 8;
+
+ if (avctx->pix_fmt == AV_PIX_FMT_RGB24){
+ s->ncomponents = 3;
+ } else if (avctx->pix_fmt == AV_PIX_FMT_GRAY8){
+ s->ncomponents = 1;
+ } else{ // planar YUV
+ s->planar = 1;
+ s->ncomponents = 3;
+ avcodec_get_chroma_sub_sample(avctx->pix_fmt,
+ s->chroma_shift, s->chroma_shift + 1);
+ }
+
+ ff_jpeg2000_init_tier1_luts();
+ ff_mqc_init_context_tables();
+ init_luts();
+
+ init_quantization(s);
+ if (ret=init_tiles(s))
+ return ret;
+
+ av_log(s->avctx, AV_LOG_DEBUG, "after init\n");
+
+ return 0;
+}
+
+static int j2kenc_destroy(AVCodecContext *avctx)
+{
+ Jpeg2000EncoderContext *s = avctx->priv_data;
+
+ cleanup(s);
+ return 0;
+}
+
+AVCodec ff_jpeg2000_encoder = {
+ .name = "jpeg2000",
+ .long_name = NULL_IF_CONFIG_SMALL("JPEG 2000"),
+ .type = AVMEDIA_TYPE_VIDEO,
+ .id = AV_CODEC_ID_JPEG2000,
+ .priv_data_size = sizeof(Jpeg2000EncoderContext),
+ .init = j2kenc_init,
+ .encode2 = encode_frame,
+ .close = j2kenc_destroy,
+ .capabilities = CODEC_CAP_EXPERIMENTAL,
+ .pix_fmts = (const enum AVPixelFormat[]) {
+ AV_PIX_FMT_RGB24, AV_PIX_FMT_YUV444P, AV_PIX_FMT_GRAY8,
+/* AV_PIX_FMT_YUV420P,
+ AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUV444P,
+ AV_PIX_FMT_YUV410P, AV_PIX_FMT_YUV411P,*/
+ AV_PIX_FMT_NONE
+ }
+};
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-10 08:31:46 +0000