--- /dev/null
+/**
+ * VP8 compatible video decoder
+ *
+ * Copyright (C) 2010 David Conrad
+ * Copyright (C) 2010 Ronald S. Bultje
+ *
+ * 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 "avcodec.h"
+#include "vp56.h"
+#include "vp8data.h"
+#include "vp8dsp.h"
+#include "h264pred.h"
+#include "rectangle.h"
+
+typedef struct {
+ uint8_t segment;
+ uint8_t skip;
+ // todo: make it possible to check for at least (i4x4 or split_mv)
+ // in one op. are others needed?
+ uint8_t mode;
+ uint8_t ref_frame;
+ uint8_t partitioning;
+ VP56mv mv;
+ VP56mv bmv[16];
+} VP8Macroblock;
+
+typedef struct {
+ AVCodecContext *avctx;
+ DSPContext dsp;
+ VP8DSPContext vp8dsp;
+ H264PredContext hpc;
+ AVFrame frames[4];
+ AVFrame *framep[4];
+ uint8_t *edge_emu_buffer;
+ VP56RangeCoder c; ///< header context, includes mb modes and motion vectors
+ int profile;
+
+ int mb_width; /* number of horizontal MB */
+ int mb_height; /* number of vertical MB */
+ int linesize;
+ int uvlinesize;
+
+ int keyframe;
+ int invisible;
+ int update_last; ///< update VP56_FRAME_PREVIOUS with the current one
+ int update_golden; ///< VP56_FRAME_NONE if not updated, or which frame to copy if so
+ int update_altref;
+
+ /**
+ * If this flag is not set, all the probability updates
+ * are discarded after this frame is decoded.
+ */
+ int update_probabilities;
+
+ /**
+ * All coefficients are contained in separate arith coding contexts.
+ * There can be 1, 2, 4, or 8 of these after the header context.
+ */
+ int num_coeff_partitions;
+ VP56RangeCoder coeff_partition[8];
+
+ VP8Macroblock *macroblocks;
+ VP8Macroblock *macroblocks_base;
+ int mb_stride;
+
+ uint8_t *intra4x4_pred_mode;
+ uint8_t *intra4x4_pred_mode_base;
+ int b4_stride;
+
+ /**
+ * For coeff decode, we need to know whether the above block had non-zero
+ * coefficients. This means for each macroblock, we need data for 4 luma
+ * blocks, 2 u blocks, 2 v blocks, and the luma dc block, for a total of 9
+ * per macroblock. We keep the last row in top_nnz.
+ */
+ uint8_t (*top_nnz)[9];
+ DECLARE_ALIGNED(8, uint8_t, left_nnz)[9];
+
+ /**
+ * This is the index plus one of the last non-zero coeff
+ * for each of the blocks in the current macroblock.
+ * So, 0 -> no coeffs
+ * 1 -> dc-only (special transform)
+ * 2+-> full transform
+ */
+ DECLARE_ALIGNED(16, uint8_t, non_zero_count_cache)[6][4];
+ DECLARE_ALIGNED(16, DCTELEM, block)[6][4][16];
+
+ int chroma_pred_mode; ///< 8x8c pred mode of the current macroblock
+
+ int mbskip_enabled;
+ int sign_bias[4]; ///< one state [0, 1] per ref frame type
+
+ /**
+ * Base parameters for segmentation, i.e. per-macroblock parameters.
+ * These must be kept unchanged even if segmentation is not used for
+ * a frame, since the values persist between interframes.
+ */
+ struct {
+ int enabled;
+ int absolute_vals;
+ int update_map;
+ int8_t base_quant[4];
+ int8_t filter_level[4]; ///< base loop filter level
+ } segmentation;
+
+ /**
+ * Macroblocks can have one of 4 different quants in a frame when
+ * segmentation is enabled.
+ * If segmentation is disabled, only the first segment's values are used.
+ */
+ struct {
+ // [0] - DC qmul [1] - AC qmul
+ int16_t luma_qmul[2];
+ int16_t luma_dc_qmul[2]; ///< luma dc-only block quant
+ int16_t chroma_qmul[2];
+ } qmat[4];
+
+ struct {
+ int simple;
+ int level;
+ int sharpness;
+ } filter;
+
+ struct {
+ int enabled; ///< whether each mb can have a different strength based on mode/ref
+
+ /**
+ * filter strength adjustment for the following macroblock modes:
+ * [0] - i4x4
+ * [1] - zero mv
+ * [2] - inter modes except for zero or split mv
+ * [3] - split mv
+ * i16x16 modes never have any adjustment
+ */
+ int8_t mode[4];
+
+ /**
+ * filter strength adjustment for macroblocks that reference:
+ * [0] - intra / VP56_FRAME_CURRENT
+ * [1] - VP56_FRAME_PREVIOUS
+ * [2] - VP56_FRAME_GOLDEN
+ * [3] - altref / VP56_FRAME_GOLDEN2
+ */
+ int8_t ref[4];
+ } lf_delta;
+
+ /**
+ * These are all of the updatable probabilities for binary decisions.
+ * They are only implictly reset on keyframes, making it quite likely
+ * for an interframe to desync if a prior frame's header was corrupt
+ * or missing outright!
+ */
+ struct {
+ uint8_t segmentid[3];
+ uint8_t mbskip;
+ uint8_t intra;
+ uint8_t last;
+ uint8_t golden;
+ uint8_t pred16x16[4];
+ uint8_t pred8x8c[3];
+ uint8_t token[4][8][3][NUM_DCT_TOKENS-1];
+ uint8_t mvc[2][19];
+ } prob[2];
+} VP8Context;
+
+#define RL24(p) (AV_RL16(p) + ((p)[2] << 16))
+
+static void vp8_decode_flush(AVCodecContext *avctx)
+{
+ VP8Context *s = avctx->priv_data;
+ int i;
+
+ for (i = 0; i < 4; i++)
+ if (s->frames[i].data[0])
+ avctx->release_buffer(avctx, &s->frames[i]);
+ memset(s->framep, 0, sizeof(s->framep));
+
+ av_freep(&s->macroblocks_base);
+ av_freep(&s->intra4x4_pred_mode_base);
+ av_freep(&s->top_nnz);
+ av_freep(&s->edge_emu_buffer);
+
+ s->macroblocks = NULL;
+ s->intra4x4_pred_mode = NULL;
+}
+
+static int update_dimensions(VP8Context *s, int width, int height)
+{
+ int i;
+
+ if (avcodec_check_dimensions(s->avctx, width, height))
+ return AVERROR_INVALIDDATA;
+
+ vp8_decode_flush(s->avctx);
+
+ avcodec_set_dimensions(s->avctx, width, height);
+
+ s->mb_width = (s->avctx->coded_width +15) / 16;
+ s->mb_height = (s->avctx->coded_height+15) / 16;
+
+ // we allocate a border around the top/left of intra4x4 modes
+ // this is 4 blocks for intra4x4 to keep 4-byte alignment for fill_rectangle
+ s->mb_stride = s->mb_width+1;
+ s->b4_stride = 4*s->mb_stride;
+
+ s->macroblocks_base = av_mallocz(s->mb_stride*(s->mb_height+1)*sizeof(*s->macroblocks));
+ s->intra4x4_pred_mode_base = av_mallocz(s->b4_stride*(4*s->mb_height+1));
+ s->top_nnz = av_mallocz(s->mb_width*sizeof(*s->top_nnz));
+
+ s->macroblocks = s->macroblocks_base + 1 + s->mb_stride;
+ s->intra4x4_pred_mode = s->intra4x4_pred_mode_base + 4 + s->b4_stride;
+
+ memset(s->intra4x4_pred_mode_base, DC_PRED, s->b4_stride);
+ for (i = 0; i < 4*s->mb_height; i++)
+ s->intra4x4_pred_mode[i*s->b4_stride-1] = DC_PRED;
+
+ return 0;
+}
+
+static void parse_segment_info(VP8Context *s)
+{
+ VP56RangeCoder *c = &s->c;
+ int i;
+
+ s->segmentation.update_map = vp8_rac_get(c);
+
+ if (vp8_rac_get(c)) { // update segment feature data
+ s->segmentation.absolute_vals = vp8_rac_get(c);
+
+ for (i = 0; i < 4; i++)
+ s->segmentation.base_quant[i] = vp8_rac_get_sint(c, 7);
+
+ for (i = 0; i < 4; i++)
+ s->segmentation.filter_level[i] = vp8_rac_get_sint(c, 6);
+ }
+ if (s->segmentation.update_map)
+ for (i = 0; i < 3; i++)
+ s->prob->segmentid[i] = vp8_rac_get(c) ? vp8_rac_get_uint(c, 8) : 255;
+}
+
+static void update_lf_deltas(VP8Context *s)
+{
+ VP56RangeCoder *c = &s->c;
+ int i;
+
+ for (i = 0; i < 4; i++)
+ s->lf_delta.ref[i] = vp8_rac_get_sint(c, 6);
+
+ for (i = 0; i < 4; i++)
+ s->lf_delta.mode[i] = vp8_rac_get_sint(c, 6);
+}
+
+static int setup_partitions(VP8Context *s, const uint8_t *buf, int buf_size)
+{
+ const uint8_t *sizes = buf;
+ int i;
+
+ s->num_coeff_partitions = 1 << vp8_rac_get_uint(&s->c, 2);
+
+ buf += 3*(s->num_coeff_partitions-1);
+ buf_size -= 3*(s->num_coeff_partitions-1);
+ if (buf_size < 0)
+ return -1;
+
+ for (i = 0; i < s->num_coeff_partitions-1; i++) {
+ int size = RL24(sizes + 3*i);
+ if (buf_size - size < 0)
+ return -1;
+
+ vp56_init_range_decoder(&s->coeff_partition[i], buf, size);
+ buf += size;
+ buf_size -= size;
+ }
+ vp56_init_range_decoder(&s->coeff_partition[i], buf, buf_size);
+
+ return 0;
+}
+
+static void get_quants(VP8Context *s)
+{
+ VP56RangeCoder *c = &s->c;
+ int i, base_qi;
+
+ int yac_qi = vp8_rac_get_uint(c, 7);
+ int ydc_delta = vp8_rac_get_sint(c, 4);
+ int y2dc_delta = vp8_rac_get_sint(c, 4);
+ int y2ac_delta = vp8_rac_get_sint(c, 4);
+ int uvdc_delta = vp8_rac_get_sint(c, 4);
+ int uvac_delta = vp8_rac_get_sint(c, 4);
+
+ for (i = 0; i < 4; i++) {
+ if (s->segmentation.enabled) {
+ base_qi = s->segmentation.base_quant[i];
+ if (!s->segmentation.absolute_vals)
+ base_qi += yac_qi;
+ } else
+ base_qi = yac_qi;
+
+ s->qmat[i].luma_qmul[0] = vp8_dc_qlookup[av_clip(base_qi + ydc_delta , 0, 127)];
+ s->qmat[i].luma_qmul[1] = vp8_ac_qlookup[av_clip(base_qi , 0, 127)];
+ s->qmat[i].luma_dc_qmul[0] = 2 * vp8_dc_qlookup[av_clip(base_qi + y2dc_delta, 0, 127)];
+ s->qmat[i].luma_dc_qmul[1] = 155 * vp8_ac_qlookup[av_clip(base_qi + y2ac_delta, 0, 127)] / 100;
+ s->qmat[i].chroma_qmul[0] = vp8_dc_qlookup[av_clip(base_qi + uvdc_delta, 0, 127)];
+ s->qmat[i].chroma_qmul[1] = vp8_ac_qlookup[av_clip(base_qi + uvac_delta, 0, 127)];
+
+ s->qmat[i].luma_dc_qmul[1] = FFMAX(s->qmat[i].luma_dc_qmul[1], 8);
+ s->qmat[i].chroma_qmul[0] = FFMIN(s->qmat[i].chroma_qmul[0], 132);
+ }
+}
+
+/**
+ * Determine which buffers golden and altref should be updated with after this frame.
+ * The spec isn't clear here, so I'm going by my understanding of what libvpx does
+ *
+ * Intra frames update all 3 references
+ * Inter frames update VP56_FRAME_PREVIOUS if the update_last flag is set
+ * If the update (golden|altref) flag is set, it's updated with the current frame
+ * if update_last is set, and VP56_FRAME_PREVIOUS otherwise.
+ * If the flag is not set, the number read means:
+ * 0: no update
+ * 1: VP56_FRAME_PREVIOUS
+ * 2: update golden with altref, or update altref with golden
+ */
+static VP56Frame ref_to_update(VP8Context *s, int update, VP56Frame ref)
+{
+ VP56RangeCoder *c = &s->c;
+
+ if (update)
+ return VP56_FRAME_CURRENT;
+
+ switch (vp8_rac_get_uint(c, 2)) {
+ case 1:
+ return VP56_FRAME_PREVIOUS;
+ case 2:
+ return (ref == VP56_FRAME_GOLDEN) ? VP56_FRAME_GOLDEN2 : VP56_FRAME_GOLDEN;
+ }
+ return VP56_FRAME_NONE;
+}
+
+static void update_refs(VP8Context *s)
+{
+ VP56RangeCoder *c = &s->c;
+
+ int update_golden = vp8_rac_get(c);
+ int update_altref = vp8_rac_get(c);
+
+ s->update_golden = ref_to_update(s, update_golden, VP56_FRAME_GOLDEN);
+ s->update_altref = ref_to_update(s, update_altref, VP56_FRAME_GOLDEN2);
+}
+
+static int decode_frame_header(VP8Context *s, const uint8_t *buf, int buf_size)
+{
+ VP56RangeCoder *c = &s->c;
+ int header_size, hscale, vscale, i, j, k, l, ret;
+ int width = s->avctx->width;
+ int height = s->avctx->height;
+
+ s->keyframe = !(buf[0] & 1);
+ s->profile = (buf[0]>>1) & 7;
+ s->invisible = !(buf[0] & 0x10);
+ header_size = RL24(buf) >> 5;
+ buf += 3;
+ buf_size -= 3;
+
+ if (s->profile)
+ av_log(s->avctx, AV_LOG_WARNING, "Profile %d not fully handled\n", s->profile);
+
+ if (header_size > buf_size - 7*s->keyframe) {
+ av_log(s->avctx, AV_LOG_ERROR, "Header size larger than data provided\n");
+ return AVERROR_INVALIDDATA;
+ }
+
+ if (s->keyframe) {
+ if (RL24(buf) != 0x2a019d) {
+ av_log(s->avctx, AV_LOG_ERROR, "Invalid start code 0x%x\n", RL24(buf));
+ return AVERROR_INVALIDDATA;
+ }
+ width = AV_RL16(buf+3) & 0x3fff;
+ height = AV_RL16(buf+5) & 0x3fff;
+ hscale = buf[4] >> 6;
+ vscale = buf[6] >> 6;
+ buf += 7;
+ buf_size -= 7;
+
+ s->update_golden = s->update_altref = VP56_FRAME_CURRENT;
+ memcpy(s->prob->token , vp8_token_default_probs , sizeof(s->prob->token));
+ memcpy(s->prob->pred16x16, vp8_pred16x16_prob_inter, sizeof(s->prob->pred16x16));
+ memcpy(s->prob->pred8x8c , vp8_pred8x8c_prob_inter , sizeof(s->prob->pred8x8c));
+ memcpy(s->prob->mvc , vp8_mv_default_prob , sizeof(s->prob->mvc));
+ memset(&s->segmentation, 0, sizeof(s->segmentation));
+ }
+
+ if (!s->macroblocks_base || /* first frame */
+ width != s->avctx->width || height != s->avctx->height) {
+ if ((ret = update_dimensions(s, width, height) < 0))
+ return ret;
+ }
+
+ vp56_init_range_decoder(c, buf, header_size);
+ buf += header_size;
+ buf_size -= header_size;
+
+ if (s->keyframe) {
+ if (vp8_rac_get(c))
+ av_log(s->avctx, AV_LOG_WARNING, "Unspecified colorspace\n");
+ vp8_rac_get(c); // whether we can skip clamping in dsp functions
+ }
+
+ if ((s->segmentation.enabled = vp8_rac_get(c)))
+ parse_segment_info(s);
+ else
+ s->segmentation.update_map = 0; // FIXME: move this to some init function?
+
+ s->filter.simple = vp8_rac_get(c);
+ s->filter.level = vp8_rac_get_uint(c, 6);
+ s->filter.sharpness = vp8_rac_get_uint(c, 3);
+
+ if ((s->lf_delta.enabled = vp8_rac_get(c)))
+ if (vp8_rac_get(c))
+ update_lf_deltas(s);
+
+ if (setup_partitions(s, buf, buf_size)) {
+ av_log(s->avctx, AV_LOG_ERROR, "Invalid partitions\n");
+ return AVERROR_INVALIDDATA;
+ }
+
+ get_quants(s);
+
+ if (!s->keyframe) {
+ update_refs(s);
+ s->sign_bias[VP56_FRAME_GOLDEN] = vp8_rac_get(c);
+ s->sign_bias[VP56_FRAME_GOLDEN2 /* altref */] = vp8_rac_get(c);
+ }
+
+ // if we aren't saving this frame's probabilities for future frames,
+ // make a copy of the current probabilities
+ if (!(s->update_probabilities = vp8_rac_get(c)))
+ s->prob[1] = s->prob[0];
+
+ s->update_last = s->keyframe || vp8_rac_get(c);
+
+ for (i = 0; i < 4; i++)
+ for (j = 0; j < 8; j++)
+ for (k = 0; k < 3; k++)
+ for (l = 0; l < NUM_DCT_TOKENS-1; l++)
+ if (vp56_rac_get_prob(c, vp8_token_update_probs[i][j][k][l]))
+ s->prob->token[i][j][k][l] = vp8_rac_get_uint(c, 8);
+
+ if ((s->mbskip_enabled = vp8_rac_get(c)))
+ s->prob->mbskip = vp8_rac_get_uint(c, 8);
+
+ if (!s->keyframe) {
+ s->prob->intra = vp8_rac_get_uint(c, 8);
+ s->prob->last = vp8_rac_get_uint(c, 8);
+ s->prob->golden = vp8_rac_get_uint(c, 8);
+
+ if (vp8_rac_get(c))
+ for (i = 0; i < 4; i++)
+ s->prob->pred16x16[i] = vp8_rac_get_uint(c, 8);
+ if (vp8_rac_get(c))
+ for (i = 0; i < 3; i++)
+ s->prob->pred8x8c[i] = vp8_rac_get_uint(c, 8);
+
+ // 17.2 MV probability update
+ for (i = 0; i < 2; i++)
+ for (j = 0; j < 19; j++)
+ if (vp56_rac_get_prob(c, vp8_mv_update_prob[i][j]))
+ s->prob->mvc[i][j] = vp8_rac_get_nn(c);
+ }
+
+ return 0;
+}
+
+static inline void clamp_mv(VP8Context *s, VP56mv *dst, const VP56mv *src,
+ int mb_x, int mb_y)
+{
+#define MARGIN (16 << 2)
+ dst->x = av_clip(src->x, -((mb_x << 6) + MARGIN),
+ ((s->mb_width - 1 - mb_x) << 6) + MARGIN);
+ dst->y = av_clip(src->y, -((mb_y << 6) + MARGIN),
+ ((s->mb_height - 1 - mb_y) << 6) + MARGIN);
+}
+
+static void find_near_mvs(VP8Context *s, VP8Macroblock *mb, int mb_x, int mb_y,
+ VP56mv near[2], VP56mv *best, int cnt[4])
+{
+ VP8Macroblock *mb_edge[3] = { mb - s->mb_stride /* top */,
+ mb - 1 /* left */,
+ mb - s->mb_stride - 1 /* top-left */ };
+ enum { EDGE_TOP, EDGE_LEFT, EDGE_TOPLEFT };
+ VP56mv near_mv[4] = {{ 0 }};
+ enum { CNT_ZERO, CNT_NEAREST, CNT_NEAR, CNT_SPLITMV };
+ int idx = CNT_ZERO, n;
+ int best_idx = CNT_ZERO;
+
+ /* Process MB on top, left and top-left */
+ for (n = 0; n < 3; n++) {
+ VP8Macroblock *edge = mb_edge[n];
+ if (edge->ref_frame != VP56_FRAME_CURRENT) {
+ if (edge->mv.x | edge->mv.y) {
+ VP56mv tmp = edge->mv;
+ if (s->sign_bias[mb->ref_frame] != s->sign_bias[edge->ref_frame]) {
+ tmp.x *= -1;
+ tmp.y *= -1;
+ }
+ if ((tmp.x ^ near_mv[idx].x) | (tmp.y ^ near_mv[idx].y))
+ near_mv[++idx] = tmp;
+ cnt[idx] += 1 + (n != 2);
+ } else
+ cnt[CNT_ZERO] += 1 + (n != 2);
+ }
+ }
+
+ /* If we have three distinct MV's, merge first and last if they're the same */
+ if (cnt[CNT_SPLITMV] &&
+ !((near_mv[1+EDGE_TOP].x ^ near_mv[1+EDGE_TOPLEFT].x) |
+ (near_mv[1+EDGE_TOP].y ^ near_mv[1+EDGE_TOPLEFT].y)))
+ cnt[CNT_NEAREST] += 1;
+
+ cnt[CNT_SPLITMV] = ((mb_edge[EDGE_LEFT]->mode == VP8_MVMODE_SPLIT) +
+ (mb_edge[EDGE_TOP]->mode == VP8_MVMODE_SPLIT)) * 2 +
+ (mb_edge[EDGE_TOPLEFT]->mode == VP8_MVMODE_SPLIT);
+
+ /* Swap near and nearest if necessary */
+ if (cnt[CNT_NEAR] > cnt[CNT_NEAREST]) {
+ FFSWAP(int, cnt[CNT_NEAREST], cnt[CNT_NEAR]);
+ FFSWAP(VP56mv, near_mv[CNT_NEAREST], near_mv[CNT_NEAR]);
+ }
+
+ /* Choose the best mv out of 0,0 and the nearest mv */
+ if (cnt[CNT_NEAREST] >= cnt[CNT_ZERO])
+ best_idx = CNT_NEAREST;
+
+ clamp_mv(s, best, &near_mv[best_idx], mb_x, mb_y);
+ near[0] = near_mv[CNT_NEAREST];
+ near[1] = near_mv[CNT_NEAR];
+}
+
+/**
+ * Motion vector coding, 17.1.
+ */
+static int read_mv_component(VP56RangeCoder *c, const uint8_t *p)
+{
+ int x = 0;
+
+ if (vp56_rac_get_prob(c, p[0])) {
+ int i;
+
+ for (i = 0; i < 3; i++)
+ x += vp56_rac_get_prob(c, p[9 + i]) << i;
+ for (i = 9; i > 3; i--)
+ x += vp56_rac_get_prob(c, p[9 + i]) << i;
+ if (!(x & 0xFFF0) || vp56_rac_get_prob(c, p[12]))
+ x += 8;
+ } else
+ x = vp8_rac_get_tree(c, vp8_small_mvtree, &p[2]);
+
+ return (x && vp56_rac_get_prob(c, p[1])) ? -x : x;
+}
+
+static const uint8_t *get_submv_prob(const VP56mv *left, const VP56mv *top)
+{
+ int l_is_zero = !(left->x | left->y);
+ int t_is_zero = !(top->x | top->y);
+ int equal = !((left->x ^ top->x) | (left->y ^ top->y));
+
+ if (equal)
+ return l_is_zero ? vp8_submv_prob[4] : vp8_submv_prob[3];
+ if (t_is_zero)
+ return vp8_submv_prob[2];
+ return l_is_zero ? vp8_submv_prob[1] : vp8_submv_prob[0];
+}
+
+/**
+ * Split motion vector prediction, 16.4.
+ */
+static void decode_splitmvs(VP8Context *s, VP56RangeCoder *c,
+ VP8Macroblock *mb, VP56mv *base_mv)
+{
+ int part_idx = mb->partitioning =
+ vp8_rac_get_tree(c, vp8_mbsplit_tree, vp8_mbsplit_prob);
+ int n, num = vp8_mbsplit_count[part_idx];
+ VP56mv part_mv[16];
+
+ for (n = 0; n < num; n++) {
+ int k = vp8_mbfirstidx[part_idx][n];
+ const VP56mv *left = (k & 3) ? &mb->bmv[k - 1] : &mb[-1].bmv[k + 3],
+ *above = (k > 3) ? &mb->bmv[k - 4] : &mb[-s->mb_stride].bmv[k + 12];
+ const uint8_t *submv_prob = get_submv_prob(left, above);
+
+ switch (vp8_rac_get_tree(c, vp8_submv_ref_tree, submv_prob)) {
+ case VP8_SUBMVMODE_NEW4X4:
+ part_mv[n].y = base_mv->y + read_mv_component(c, s->prob->mvc[0]);
+ part_mv[n].x = base_mv->x + read_mv_component(c, s->prob->mvc[1]);
+ break;
+ case VP8_SUBMVMODE_ZERO4X4:
+ part_mv[n].x = 0;
+ part_mv[n].y = 0;
+ break;
+ case VP8_SUBMVMODE_LEFT4X4:
+ part_mv[n] = *left;
+ break;
+ case VP8_SUBMVMODE_TOP4X4:
+ part_mv[n] = *above;
+ break;
+ }
+
+ /* fill out over the 4x4 blocks in MB */
+ for (k = 0; k < 16; k++)
+ if (vp8_mbsplits[part_idx][k] == n) {
+ mb->bmv[k] = part_mv[n];
+ }
+ }
+}
+
+static inline void decode_intra4x4_modes(VP56RangeCoder *c, uint8_t *intra4x4,
+ int stride, int keyframe)
+{
+ int x, y, t, l;
+ const uint8_t *ctx = vp8_pred4x4_prob_inter;
+
+ for (y = 0; y < 4; y++) {
+ for (x = 0; x < 4; x++) {
+ if (keyframe) {
+ t = intra4x4[x - stride];
+ l = intra4x4[x - 1];
+ ctx = vp8_pred4x4_prob_intra[t][l];
+ }
+ intra4x4[x] = vp8_rac_get_tree(c, vp8_pred4x4_tree, ctx);
+ }
+ intra4x4 += stride;
+ }
+}
+
+static void decode_mb_mode(VP8Context *s, VP8Macroblock *mb, int mb_x, int mb_y,
+ uint8_t *intra4x4)
+{
+ VP56RangeCoder *c = &s->c;
+ int n;
+
+ if (s->segmentation.update_map)
+ mb->segment = vp8_rac_get_tree(c, vp8_segmentid_tree, s->prob->segmentid);
+
+ mb->skip = s->mbskip_enabled ? vp56_rac_get_prob(c, s->prob->mbskip) : 0;
+
+ if (s->keyframe) {
+ mb->mode = vp8_rac_get_tree(c, vp8_pred16x16_tree_intra, vp8_pred16x16_prob_intra);
+
+ if (mb->mode == MODE_I4x4) {
+ decode_intra4x4_modes(c, intra4x4, s->b4_stride, 1);
+ } else
+ fill_rectangle(intra4x4, 4, 4, s->b4_stride, vp8_pred4x4_mode[mb->mode], 1);
+
+ s->chroma_pred_mode = vp8_rac_get_tree(c, vp8_pred8x8c_tree, vp8_pred8x8c_prob_intra);
+ mb->ref_frame = VP56_FRAME_CURRENT;
+ } else if (vp56_rac_get_prob(c, s->prob->intra)) {
+ VP56mv near[2], best;
+ int cnt[4] = { 0 };
+ uint8_t p[4];
+
+ // inter MB, 16.2
+ if (vp56_rac_get_prob(c, s->prob->last))
+ mb->ref_frame = vp56_rac_get_prob(c, s->prob->golden) ?
+ VP56_FRAME_GOLDEN2 /* altref */ : VP56_FRAME_GOLDEN;
+ else
+ mb->ref_frame = VP56_FRAME_PREVIOUS;
+
+ // motion vectors, 16.3
+ find_near_mvs(s, mb, mb_x, mb_y, near, &best, cnt);
+ for (n = 0; n < 4; n++)
+ p[n] = vp8_mode_contexts[cnt[n]][n];
+ mb->mode = vp8_rac_get_tree(c, vp8_pred16x16_tree_mvinter, p);
+ switch (mb->mode) {
+ case VP8_MVMODE_SPLIT:
+ decode_splitmvs(s, c, mb, &best);
+ mb->mv = mb->bmv[15];
+ break;
+ case VP8_MVMODE_ZERO:
+ mb->mv.x = 0;
+ mb->mv.y = 0;
+ break;
+ case VP8_MVMODE_NEAREST:
+ clamp_mv(s, &mb->mv, &near[0], mb_x, mb_y);
+ break;
+ case VP8_MVMODE_NEAR:
+ clamp_mv(s, &mb->mv, &near[1], mb_x, mb_y);
+ break;
+ case VP8_MVMODE_NEW:
+ mb->mv.y = best.y + read_mv_component(c, s->prob->mvc[0]);
+ mb->mv.x = best.x + read_mv_component(c, s->prob->mvc[1]);
+ break;
+ }
+ if (mb->mode != VP8_MVMODE_SPLIT) {
+ for (n = 0; n < 16; n++)
+ mb->bmv[n] = mb->mv;
+ }
+ } else {
+ // intra MB, 16.1
+ mb->mode = vp8_rac_get_tree(c, vp8_pred16x16_tree_inter, s->prob->pred16x16);
+
+ if (mb->mode == MODE_I4x4) {
+ decode_intra4x4_modes(c, intra4x4, s->b4_stride, 0);
+ } else
+ fill_rectangle(intra4x4, 4, 4, s->b4_stride, vp8_pred4x4_mode[mb->mode], 1);
+
+ s->chroma_pred_mode = vp8_rac_get_tree(c, vp8_pred8x8c_tree, s->prob->pred8x8c);
+ mb->ref_frame = VP56_FRAME_CURRENT;
+ }
+}
+
+/**
+ * @param i initial coeff index, 0 unless a separate DC block is coded
+ * @param zero_nhood the initial prediction context for number of surrounding
+ * all-zero blocks (only left/top, so 0-2)
+ * @param qmul[0] dc dequant factor
+ * @param qmul[1] ac dequant factor
+ * @return 0 if no coeffs were decoded
+ * otherwise, the index of the last coeff decoded plus one
+ */
+static int decode_block_coeffs(VP56RangeCoder *c, DCTELEM block[16],
+ uint8_t probs[8][3][NUM_DCT_TOKENS-1],
+ int i, int zero_nhood, int16_t qmul[2])
+{
+ int token, nonzero = 0;
+ int offset = 0;
+
+ for (; i < 16; i++) {
+ token = vp8_rac_get_tree_with_offset(c, vp8_coeff_tree, probs[vp8_coeff_band[i]][zero_nhood], offset);
+
+ if (token == DCT_EOB)
+ break;
+ else if (token >= DCT_CAT1) {
+ int cat = token-DCT_CAT1;
+ token = vp8_rac_get_coeff(c, vp8_dct_cat_prob[cat]);
+ token += vp8_dct_cat_offset[cat];
+ }
+
+ // after the first token, the non-zero prediction context becomes
+ // based on the last decoded coeff
+ if (!token) {
+ zero_nhood = 0;
+ offset = 1;
+ continue;
+ } else if (token == 1)
+ zero_nhood = 1;
+ else
+ zero_nhood = 2;
+
+ // todo: full [16] qmat? load into register?
+ block[zigzag_scan[i]] = (vp8_rac_get(c) ? -token : token) * qmul[!!i];
+ nonzero = i+1;
+ offset = 0;
+ }
+ return nonzero;
+}
+
+static void decode_mb_coeffs(VP8Context *s, VP56RangeCoder *c, VP8Macroblock *mb,
+ uint8_t t_nnz[9], uint8_t l_nnz[9])
+{
+ LOCAL_ALIGNED_16(DCTELEM, dc,[16]);
+ int i, x, y, luma_start = 0, luma_ctx = 3;
+ int nnz_pred, nnz, nnz_total = 0;
+ int segment = s->segmentation.enabled ? mb->segment : 0;
+
+ s->dsp.clear_blocks((DCTELEM *)s->block);
+
+ if (mb->mode != MODE_I4x4 && mb->mode != VP8_MVMODE_SPLIT) {
+ AV_ZERO128(dc);
+ AV_ZERO128(dc+8);
+ nnz_pred = t_nnz[8] + l_nnz[8];
+
+ // decode DC values and do hadamard
+ nnz = decode_block_coeffs(c, dc, s->prob->token[1], 0, nnz_pred,
+ s->qmat[segment].luma_dc_qmul);
+ l_nnz[8] = t_nnz[8] = !!nnz;
+ nnz_total += nnz;
+ s->vp8dsp.vp8_luma_dc_wht(s->block, dc);
+ luma_start = 1;
+ luma_ctx = 0;
+ }
+
+ // luma blocks
+ for (y = 0; y < 4; y++)
+ for (x = 0; x < 4; x++) {
+ nnz_pred = l_nnz[y] + t_nnz[x];
+ nnz = decode_block_coeffs(c, s->block[y][x], s->prob->token[luma_ctx], luma_start,
+ nnz_pred, s->qmat[segment].luma_qmul);
+ // nnz+luma_start may be one more than the actual last index, but we don't care
+ s->non_zero_count_cache[y][x] = nnz + luma_start;
+ t_nnz[x] = l_nnz[y] = !!nnz;
+ nnz_total += nnz;
+ }
+
+ // chroma blocks
+ // TODO: what to do about dimensions? 2nd dim for luma is x,
+ // but for chroma it's (y<<1)|x
+ for (i = 4; i < 6; i++)
+ for (y = 0; y < 2; y++)
+ for (x = 0; x < 2; x++) {
+ nnz_pred = l_nnz[i+2*y] + t_nnz[i+2*x];
+ nnz = decode_block_coeffs(c, s->block[i][(y<<1)+x], s->prob->token[2], 0,
+ nnz_pred, s->qmat[segment].chroma_qmul);
+ s->non_zero_count_cache[i][(y<<1)+x] = nnz;
+ t_nnz[i+2*x] = l_nnz[i+2*y] = !!nnz;
+ nnz_total += nnz;
+ }
+
+ // if there were no coded coeffs despite the macroblock not being marked skip,
+ // we MUST not do the inner loop filter and should not do IDCT
+ // Since skip isn't used for bitstream prediction, just manually set it.
+ if (!nnz_total)
+ mb->skip = 1;
+}
+
+static int check_intra_pred_mode(int mode, int mb_x, int mb_y)
+{
+ if (mode == DC_PRED8x8) {
+ if (!(mb_x|mb_y))
+ mode = DC_128_PRED8x8;
+ else if (!mb_y)
+ mode = LEFT_DC_PRED8x8;
+ else if (!mb_x)
+ mode = TOP_DC_PRED8x8;
+ }
+ return mode;
+}
+
+static void intra_predict(VP8Context *s, uint8_t *dst[3], VP8Macroblock *mb,
+ uint8_t *bmode, int mb_x, int mb_y)
+{
+ int x, y, mode, nnz, tr;
+
+ if (mb->mode < MODE_I4x4) {
+ mode = check_intra_pred_mode(mb->mode, mb_x, mb_y);
+ s->hpc.pred16x16[mode](dst[0], s->linesize);
+ } else {
+ uint8_t *ptr = dst[0];
+
+ // all blocks on the right edge of the macroblock use bottom edge
+ // the top macroblock for their topright edge
+ uint8_t *tr_right = ptr - s->linesize + 16;
+
+ // if we're on the right edge of the frame, said edge is extended
+ // from the top macroblock
+ if (mb_x == s->mb_width-1) {
+ tr = tr_right[-1]*0x01010101;
+ tr_right = (uint8_t *)&tr;
+ }
+
+ for (y = 0; y < 4; y++) {
+ uint8_t *topright = ptr + 4 - s->linesize;
+ for (x = 0; x < 4; x++) {
+ if (x == 3)
+ topright = tr_right;
+
+ s->hpc.pred4x4[bmode[x]](ptr+4*x, topright, s->linesize);
+
+ nnz = s->non_zero_count_cache[y][x];
+ if (nnz) {
+ if (nnz == 1)
+ s->vp8dsp.vp8_idct_dc_add(ptr+4*x, s->block[y][x], s->linesize);
+ else
+ s->vp8dsp.vp8_idct_add(ptr+4*x, s->block[y][x], s->linesize);
+ }
+ topright += 4;
+ }
+
+ ptr += 4*s->linesize;
+ bmode += s->b4_stride;
+ }
+ }
+
+ mode = check_intra_pred_mode(s->chroma_pred_mode, mb_x, mb_y);
+ s->hpc.pred8x8[mode](dst[1], s->uvlinesize);
+ s->hpc.pred8x8[mode](dst[2], s->uvlinesize);
+}
+
+/**
+ * Generic MC function.
+ *
+ * @param s VP8 decoding context
+ * @param luma 1 for luma (Y) planes, 0 for chroma (Cb/Cr) planes
+ * @param dst target buffer for block data at block position
+ * @param src reference picture buffer at origin (0, 0)
+ * @param mv motion vector (relative to block position) to get pixel data from
+ * @param x_off horizontal position of block from origin (0, 0)
+ * @param y_off vertical position of block from origin (0, 0)
+ * @param block_w width of block (16, 8 or 4)
+ * @param block_h height of block (always same as block_w)
+ * @param width width of src/dst plane data
+ * @param height height of src/dst plane data
+ * @param linesize size of a single line of plane data, including padding
+ */
+static inline void vp8_mc(VP8Context *s, int luma,
+ uint8_t *dst, uint8_t *src, const VP56mv *mv,
+ int x_off, int y_off, int block_w, int block_h,
+ int width, int height, int linesize,
+ h264_chroma_mc_func mc_func[3][3])
+{
+ static const uint8_t idx[8] = { 0, 1, 2, 1, 2, 1, 2, 1 };
+ int mx = (mv->x << luma)&7, mx_idx = idx[mx];
+ int my = (mv->y << luma)&7, my_idx = idx[my];
+
+ x_off += mv->x >> (3 - luma);
+ y_off += mv->y >> (3 - luma);
+
+ // edge emulation
+ src += y_off * linesize + x_off;
+ if (x_off < 2 || x_off >= width - block_w - 3 ||
+ y_off < 2 || y_off >= height - block_h - 3) {
+ ff_emulated_edge_mc(s->edge_emu_buffer, src - 2 * linesize - 2, linesize,
+ block_w + 5, block_h + 5,
+ x_off - 2, y_off - 2, width, height);
+ src = s->edge_emu_buffer + 2 + linesize * 2;
+ }
+
+ mc_func[my_idx][mx_idx](dst, src, linesize, block_h, mx, my);
+}
+
+/**
+ * Apply motion vectors to prediction buffer, chapter 18.
+ */
+static void inter_predict(VP8Context *s, uint8_t *dst[3], VP8Macroblock *mb,
+ int mb_x, int mb_y)
+{
+ int x_off = mb_x << 4, y_off = mb_y << 4;
+ int width = 16*s->mb_width, height = 16*s->mb_height;
+ VP56mv uvmv;
+
+ if (mb->mode < VP8_MVMODE_SPLIT) {
+ /* Y */
+ vp8_mc(s, 1, dst[0], s->framep[mb->ref_frame]->data[0], &mb->mv,
+ x_off, y_off, 16, 16, width, height, s->linesize,
+ s->vp8dsp.put_vp8_epel_pixels_tab[0]);
+
+ /* U/V */
+ uvmv = mb->mv;
+ if (s->profile == 3) {
+ uvmv.x &= ~7;
+ uvmv.y &= ~7;
+ }
+ x_off >>= 1; y_off >>= 1; width >>= 1; height >>= 1;
+ vp8_mc(s, 0, dst[1], s->framep[mb->ref_frame]->data[1], &uvmv,
+ x_off, y_off, 8, 8, width, height, s->uvlinesize,
+ s->vp8dsp.put_vp8_epel_pixels_tab[1]);
+ vp8_mc(s, 0, dst[2], s->framep[mb->ref_frame]->data[2], &uvmv,
+ x_off, y_off, 8, 8, width, height, s->uvlinesize,
+ s->vp8dsp.put_vp8_epel_pixels_tab[1]);
+ } else {
+ int x, y;
+
+ /* Y */
+ for (y = 0; y < 4; y++) {
+ for (x = 0; x < 4; x++) {
+ vp8_mc(s, 1, dst[0] + 4*y*s->linesize + x*4,
+ s->framep[mb->ref_frame]->data[0], &mb->bmv[4*y + x],
+ 4*x + x_off, 4*y + y_off, 4, 4,
+ width, height, s->linesize,
+ s->vp8dsp.put_vp8_epel_pixels_tab[2]);
+ }
+ }
+
+ /* U/V */
+ x_off >>= 1; y_off >>= 1; width >>= 1; height >>= 1;
+ for (y = 0; y < 2; y++) {
+ for (x = 0; x < 2; x++) {
+ uvmv.x = mb->bmv[ 2*y * 4 + 2*x ].x +
+ mb->bmv[ 2*y * 4 + 2*x+1].x +
+ mb->bmv[(2*y+1) * 4 + 2*x ].x +
+ mb->bmv[(2*y+1) * 4 + 2*x+1].x;
+ uvmv.y = mb->bmv[ 2*y * 4 + 2*x ].y +
+ mb->bmv[ 2*y * 4 + 2*x+1].y +
+ mb->bmv[(2*y+1) * 4 + 2*x ].y +
+ mb->bmv[(2*y+1) * 4 + 2*x+1].y;
+ uvmv.x = (uvmv.x + (uvmv.x < 0 ? -2 : 2)) / 4;
+ uvmv.y = (uvmv.y + (uvmv.y < 0 ? -2 : 2)) / 4;
+ if (s->profile == 3) {
+ uvmv.x &= ~7;
+ uvmv.y &= ~7;
+ }
+ vp8_mc(s, 0, dst[1] + 4*y*s->uvlinesize + x*4,
+ s->framep[mb->ref_frame]->data[1], &uvmv,
+ 4*x + x_off, 4*y + y_off, 4, 4,
+ width, height, s->uvlinesize,
+ s->vp8dsp.put_vp8_epel_pixels_tab[2]);
+ vp8_mc(s, 0, dst[2] + 4*y*s->uvlinesize + x*4,
+ s->framep[mb->ref_frame]->data[2], &uvmv,
+ 4*x + x_off, 4*y + y_off, 4, 4,
+ width, height, s->uvlinesize,
+ s->vp8dsp.put_vp8_epel_pixels_tab[2]);
+ }
+ }
+ }
+}
+
+static void idct_mb(VP8Context *s, uint8_t *y_dst, uint8_t *u_dst, uint8_t *v_dst,
+ VP8Macroblock *mb)
+{
+ int x, y, nnz;
+
+ if (mb->mode != MODE_I4x4)
+ for (y = 0; y < 4; y++) {
+ for (x = 0; x < 4; x++) {
+ nnz = s->non_zero_count_cache[y][x];
+ if (nnz) {
+ if (nnz == 1)
+ s->vp8dsp.vp8_idct_dc_add(y_dst+4*x, s->block[y][x], s->linesize);
+ else
+ s->vp8dsp.vp8_idct_add(y_dst+4*x, s->block[y][x], s->linesize);
+ }
+ }
+ y_dst += 4*s->linesize;
+ }
+
+ for (y = 0; y < 2; y++) {
+ for (x = 0; x < 2; x++) {
+ nnz = s->non_zero_count_cache[4][(y<<1)+x];
+ if (nnz) {
+ if (nnz == 1)
+ s->vp8dsp.vp8_idct_dc_add(u_dst+4*x, s->block[4][(y<<1)+x], s->uvlinesize);
+ else
+ s->vp8dsp.vp8_idct_add(u_dst+4*x, s->block[4][(y<<1)+x], s->uvlinesize);
+ }
+
+ nnz = s->non_zero_count_cache[5][(y<<1)+x];
+ if (nnz) {
+ if (nnz == 1)
+ s->vp8dsp.vp8_idct_dc_add(v_dst+4*x, s->block[5][(y<<1)+x], s->uvlinesize);
+ else
+ s->vp8dsp.vp8_idct_add(v_dst+4*x, s->block[5][(y<<1)+x], s->uvlinesize);
+ }
+ }
+ u_dst += 4*s->uvlinesize;
+ v_dst += 4*s->uvlinesize;
+ }
+}
+
+static void filter_level_for_mb(VP8Context *s, VP8Macroblock *mb, int *level, int *inner, int *hev_thresh)
+{
+ int interior_limit, filter_level;
+
+ if (s->segmentation.enabled) {
+ filter_level = s->segmentation.filter_level[mb->segment];
+ if (!s->segmentation.absolute_vals)
+ filter_level += s->filter.level;
+ } else
+ filter_level = s->filter.level;
+
+ if (s->lf_delta.enabled) {
+ filter_level += s->lf_delta.ref[mb->ref_frame];
+
+ if (mb->ref_frame == VP56_FRAME_CURRENT) {
+ if (mb->mode == MODE_I4x4)
+ filter_level += s->lf_delta.mode[0];
+ } else {
+ if (mb->mode == VP8_MVMODE_ZERO)
+ filter_level += s->lf_delta.mode[1];
+ else if (mb->mode == VP8_MVMODE_SPLIT)
+ filter_level += s->lf_delta.mode[3];
+ else
+ filter_level += s->lf_delta.mode[2];
+ }
+ }
+ filter_level = av_clip(filter_level, 0, 63);
+
+ interior_limit = filter_level;
+ if (s->filter.sharpness) {
+ interior_limit >>= s->filter.sharpness > 4 ? 2 : 1;
+ interior_limit = FFMIN(interior_limit, 9 - s->filter.sharpness);
+ }
+ interior_limit = FFMAX(interior_limit, 1);
+
+ *level = filter_level;
+ *inner = interior_limit;
+
+ if (hev_thresh) {
+ *hev_thresh = filter_level >= 15;
+
+ if (s->keyframe) {
+ if (filter_level >= 40)
+ *hev_thresh = 2;
+ } else {
+ if (filter_level >= 40)
+ *hev_thresh = 3;
+ else if (filter_level >= 20)
+ *hev_thresh = 2;
+ }
+ }
+}
+
+// TODO: look at backup_mb_border / xchg_mb_border in h264.c
+static void filter_mb(VP8Context *s, uint8_t *dst[3], VP8Macroblock *mb, int mb_x, int mb_y)
+{
+ int filter_level, inner_limit, hev_thresh;
+
+ filter_level_for_mb(s, mb, &filter_level, &inner_limit, &hev_thresh);
+ if (!filter_level)
+ return;
+
+ if (mb_x) {
+ s->vp8dsp.vp8_h_loop_filter16(dst[0], s->linesize, filter_level+2, inner_limit, hev_thresh);
+ s->vp8dsp.vp8_h_loop_filter8 (dst[1], s->uvlinesize, filter_level+2, inner_limit, hev_thresh);
+ s->vp8dsp.vp8_h_loop_filter8 (dst[2], s->uvlinesize, filter_level+2, inner_limit, hev_thresh);
+ }
+
+ if (!mb->skip || mb->mode == MODE_I4x4 || mb->mode == VP8_MVMODE_SPLIT) {
+ s->vp8dsp.vp8_h_loop_filter16_inner(dst[0]+ 4, s->linesize, filter_level, inner_limit, hev_thresh);
+ s->vp8dsp.vp8_h_loop_filter16_inner(dst[0]+ 8, s->linesize, filter_level, inner_limit, hev_thresh);
+ s->vp8dsp.vp8_h_loop_filter16_inner(dst[0]+12, s->linesize, filter_level, inner_limit, hev_thresh);
+ s->vp8dsp.vp8_h_loop_filter8_inner (dst[1]+ 4, s->uvlinesize, filter_level, inner_limit, hev_thresh);
+ s->vp8dsp.vp8_h_loop_filter8_inner (dst[2]+ 4, s->uvlinesize, filter_level, inner_limit, hev_thresh);
+ }
+
+ if (mb_y) {
+ s->vp8dsp.vp8_v_loop_filter16(dst[0], s->linesize, filter_level+2, inner_limit, hev_thresh);
+ s->vp8dsp.vp8_v_loop_filter8 (dst[1], s->uvlinesize, filter_level+2, inner_limit, hev_thresh);
+ s->vp8dsp.vp8_v_loop_filter8 (dst[2], s->uvlinesize, filter_level+2, inner_limit, hev_thresh);
+ }
+
+ if (!mb->skip || mb->mode == MODE_I4x4 || mb->mode == VP8_MVMODE_SPLIT) {
+ s->vp8dsp.vp8_v_loop_filter16_inner(dst[0]+ 4*s->linesize, s->linesize, filter_level, inner_limit, hev_thresh);
+ s->vp8dsp.vp8_v_loop_filter16_inner(dst[0]+ 8*s->linesize, s->linesize, filter_level, inner_limit, hev_thresh);
+ s->vp8dsp.vp8_v_loop_filter16_inner(dst[0]+12*s->linesize, s->linesize, filter_level, inner_limit, hev_thresh);
+ s->vp8dsp.vp8_v_loop_filter8_inner (dst[1]+ 4*s->uvlinesize, s->uvlinesize, filter_level, inner_limit, hev_thresh);
+ s->vp8dsp.vp8_v_loop_filter8_inner (dst[2]+ 4*s->uvlinesize, s->uvlinesize, filter_level, inner_limit, hev_thresh);
+ }
+}
+
+static void filter_mb_simple(VP8Context *s, uint8_t *dst, VP8Macroblock *mb, int mb_x, int mb_y)
+{
+ int filter_level, inner_limit, mbedge_lim, bedge_lim;
+
+ filter_level_for_mb(s, mb, &filter_level, &inner_limit, NULL);
+ if (!filter_level)
+ return;
+
+ mbedge_lim = 2*(filter_level+2) + inner_limit;
+ bedge_lim = 2* filter_level + inner_limit;
+
+ if (mb_x)
+ s->vp8dsp.vp8_h_loop_filter_simple(dst, s->linesize, mbedge_lim);
+ if (!mb->skip || mb->mode == MODE_I4x4 || mb->mode == VP8_MVMODE_SPLIT) {
+ s->vp8dsp.vp8_h_loop_filter_simple(dst+ 4, s->linesize, bedge_lim);
+ s->vp8dsp.vp8_h_loop_filter_simple(dst+ 8, s->linesize, bedge_lim);
+ s->vp8dsp.vp8_h_loop_filter_simple(dst+12, s->linesize, bedge_lim);
+ }
+
+ if (mb_y)
+ s->vp8dsp.vp8_v_loop_filter_simple(dst, s->linesize, mbedge_lim);
+ if (!mb->skip || mb->mode == MODE_I4x4 || mb->mode == VP8_MVMODE_SPLIT) {
+ s->vp8dsp.vp8_v_loop_filter_simple(dst+ 4*s->linesize, s->linesize, bedge_lim);
+ s->vp8dsp.vp8_v_loop_filter_simple(dst+ 8*s->linesize, s->linesize, bedge_lim);
+ s->vp8dsp.vp8_v_loop_filter_simple(dst+12*s->linesize, s->linesize, bedge_lim);
+ }
+}
+
+static void filter_mb_row(VP8Context *s, int mb_y)
+{
+ VP8Macroblock *mb = s->macroblocks + mb_y*s->mb_stride;
+ uint8_t *dst[3] = {
+ s->framep[VP56_FRAME_CURRENT]->data[0] + 16*mb_y*s->linesize,
+ s->framep[VP56_FRAME_CURRENT]->data[1] + 8*mb_y*s->uvlinesize,
+ s->framep[VP56_FRAME_CURRENT]->data[2] + 8*mb_y*s->uvlinesize
+ };
+ int mb_x;
+
+ for (mb_x = 0; mb_x < s->mb_width; mb_x++) {
+ filter_mb(s, dst, mb++, mb_x, mb_y);
+ dst[0] += 16;
+ dst[1] += 8;
+ dst[2] += 8;
+ }
+}
+
+static void filter_mb_row_simple(VP8Context *s, int mb_y)
+{
+ uint8_t *dst = s->framep[VP56_FRAME_CURRENT]->data[0] + 16*mb_y*s->linesize;
+ VP8Macroblock *mb = s->macroblocks + mb_y*s->mb_stride;
+ int mb_x;
+
+ for (mb_x = 0; mb_x < s->mb_width; mb_x++) {
+ filter_mb_simple(s, dst, mb++, mb_x, mb_y);
+ dst += 16;
+ }
+}
+
+static int vp8_decode_frame(AVCodecContext *avctx, void *data, int *data_size,
+ AVPacket *avpkt)
+{
+ VP8Context *s = avctx->priv_data;
+ int ret, mb_x, mb_y, i, y, referenced;
+ enum AVDiscard skip_thresh;
+ AVFrame *curframe;
+
+ if ((ret = decode_frame_header(s, avpkt->data, avpkt->size)) < 0)
+ return ret;
+
+ referenced = s->update_last || s->update_golden == VP56_FRAME_CURRENT
+ || s->update_altref == VP56_FRAME_CURRENT;
+
+ skip_thresh = !referenced ? AVDISCARD_NONREF :
+ !s->keyframe ? AVDISCARD_NONKEY : AVDISCARD_ALL;
+
+ if (avctx->skip_frame >= skip_thresh) {
+ s->invisible = 1;
+ goto skip_decode;
+ }
+
+ for (i = 0; i < 4; i++)
+ if (&s->frames[i] != s->framep[VP56_FRAME_PREVIOUS] &&
+ &s->frames[i] != s->framep[VP56_FRAME_GOLDEN] &&
+ &s->frames[i] != s->framep[VP56_FRAME_GOLDEN2]) {
+ curframe = s->framep[VP56_FRAME_CURRENT] = &s->frames[i];
+ break;
+ }
+ if (curframe->data[0])
+ avctx->release_buffer(avctx, curframe);
+
+ curframe->key_frame = s->keyframe;
+ curframe->pict_type = s->keyframe ? FF_I_TYPE : FF_P_TYPE;
+ curframe->reference = referenced ? 3 : 0;
+ if ((ret = avctx->get_buffer(avctx, curframe))) {
+ av_log(avctx, AV_LOG_ERROR, "get_buffer() failed!\n");
+ return ret;
+ }
+
+ // Given that arithmetic probabilities are updated every frame, it's quite likely
+ // that the values we have on a random interframe are complete junk if we didn't
+ // start decode on a keyframe. So just don't display anything rather than junk.
+ if (!s->keyframe && (!s->framep[VP56_FRAME_PREVIOUS] ||
+ !s->framep[VP56_FRAME_GOLDEN] ||
+ !s->framep[VP56_FRAME_GOLDEN2])) {
+ av_log(avctx, AV_LOG_WARNING, "Discarding interframe without a prior keyframe!\n");
+ return AVERROR_INVALIDDATA;
+ }
+
+ s->linesize = curframe->linesize[0];
+ s->uvlinesize = curframe->linesize[1];
+
+ if (!s->edge_emu_buffer)
+ s->edge_emu_buffer = av_malloc(21*s->linesize);
+
+ memset(s->top_nnz, 0, s->mb_width*sizeof(*s->top_nnz));
+
+ // top edge of 127 for intra prediction
+ if (!(avctx->flags & CODEC_FLAG_EMU_EDGE)) {
+ memset(curframe->data[0] - s->linesize -1, 127, s->linesize +1);
+ memset(curframe->data[1] - s->uvlinesize-1, 127, s->uvlinesize+1);
+ memset(curframe->data[2] - s->uvlinesize-1, 127, s->uvlinesize+1);
+ }
+
+ for (mb_y = 0; mb_y < s->mb_height; mb_y++) {
+ VP56RangeCoder *c = &s->coeff_partition[mb_y & (s->num_coeff_partitions-1)];
+ VP8Macroblock *mb = s->macroblocks + mb_y*s->mb_stride;
+ uint8_t *intra4x4 = s->intra4x4_pred_mode + 4*mb_y*s->b4_stride;
+ uint8_t *dst[3] = {
+ curframe->data[0] + 16*mb_y*s->linesize,
+ curframe->data[1] + 8*mb_y*s->uvlinesize,
+ curframe->data[2] + 8*mb_y*s->uvlinesize
+ };
+
+ memset(s->left_nnz, 0, sizeof(s->left_nnz));
+
+ // left edge of 129 for intra prediction
+ if (!(avctx->flags & CODEC_FLAG_EMU_EDGE))
+ for (i = 0; i < 3; i++)
+ for (y = 0; y < 16>>!!i; y++)
+ dst[i][y*curframe->linesize[i]-1] = 129;
+
+ for (mb_x = 0; mb_x < s->mb_width; mb_x++) {
+ decode_mb_mode(s, mb, mb_x, mb_y, intra4x4 + 4*mb_x);
+
+ if (!mb->skip)
+ decode_mb_coeffs(s, c, mb, s->top_nnz[mb_x], s->left_nnz);
+ else {
+ AV_ZERO128(s->non_zero_count_cache); // luma
+ AV_ZERO64(s->non_zero_count_cache[4]); // chroma
+ }
+
+ if (mb->mode <= MODE_I4x4) {
+ intra_predict(s, dst, mb, intra4x4 + 4*mb_x, mb_x, mb_y);
+ memset(mb->bmv, 0, sizeof(mb->bmv));
+ } else {
+ inter_predict(s, dst, mb, mb_x, mb_y);
+ }
+
+ if (!mb->skip) {
+ idct_mb(s, dst[0], dst[1], dst[2], mb);
+ } else {
+ AV_ZERO64(s->left_nnz);
+ AV_WN64(s->top_nnz[mb_x], 0); // array of 9, so unaligned
+
+ // Reset DC block predictors if they would exist if the mb had coefficients
+ if (mb->mode != MODE_I4x4 && mb->mode != VP8_MVMODE_SPLIT) {
+ s->left_nnz[8] = 0;
+ s->top_nnz[mb_x][8] = 0;
+ }
+ }
+
+ dst[0] += 16;
+ dst[1] += 8;
+ dst[2] += 8;
+ mb++;
+ }
+ if (mb_y && s->filter.level && avctx->skip_loop_filter < skip_thresh) {
+ if (s->filter.simple)
+ filter_mb_row_simple(s, mb_y-1);
+ else
+ filter_mb_row(s, mb_y-1);
+ }
+ }
+ if (s->filter.level && avctx->skip_loop_filter < skip_thresh) {
+ if (s->filter.simple)
+ filter_mb_row_simple(s, mb_y-1);
+ else
+ filter_mb_row(s, mb_y-1);
+ }
+
+skip_decode:
+ // if future frames don't use the updated probabilities,
+ // reset them to the values we saved
+ if (!s->update_probabilities)
+ s->prob[0] = s->prob[1];
+
+ // check if golden and altref are swapped
+ if (s->update_altref == VP56_FRAME_GOLDEN &&
+ s->update_golden == VP56_FRAME_GOLDEN2)
+ FFSWAP(AVFrame *, s->framep[VP56_FRAME_GOLDEN], s->framep[VP56_FRAME_GOLDEN2]);
+ else {
+ if (s->update_altref != VP56_FRAME_NONE)
+ s->framep[VP56_FRAME_GOLDEN2] = s->framep[s->update_altref];
+
+ if (s->update_golden != VP56_FRAME_NONE)
+ s->framep[VP56_FRAME_GOLDEN] = s->framep[s->update_golden];
+ }
+
+ if (s->update_last) // move cur->prev
+ s->framep[VP56_FRAME_PREVIOUS] = s->framep[VP56_FRAME_CURRENT];
+
+ // release no longer referenced frames
+ for (i = 0; i < 4; i++)
+ if (s->frames[i].data[0] &&
+ &s->frames[i] != s->framep[VP56_FRAME_CURRENT] &&
+ &s->frames[i] != s->framep[VP56_FRAME_PREVIOUS] &&
+ &s->frames[i] != s->framep[VP56_FRAME_GOLDEN] &&
+ &s->frames[i] != s->framep[VP56_FRAME_GOLDEN2])
+ avctx->release_buffer(avctx, &s->frames[i]);
+
+ if (!s->invisible) {
+ *(AVFrame*)data = *s->framep[VP56_FRAME_CURRENT];
+ *data_size = sizeof(AVFrame);
+ }
+
+ return avpkt->size;
+}
+
+static av_cold int vp8_decode_init(AVCodecContext *avctx)
+{
+ VP8Context *s = avctx->priv_data;
+
+ s->avctx = avctx;
+ avctx->pix_fmt = PIX_FMT_YUV420P;
+
+ dsputil_init(&s->dsp, avctx);
+ ff_h264_pred_init(&s->hpc, CODEC_ID_VP8);
+ ff_vp8dsp_init(&s->vp8dsp);
+
+ // intra pred needs edge emulation among other things
+ if (avctx->flags&CODEC_FLAG_EMU_EDGE) {
+ av_log(avctx, AV_LOG_ERROR, "Edge emulation not supproted\n");
+ return AVERROR_PATCHWELCOME;
+ }
+
+ return 0;
+}
+
+static av_cold int vp8_decode_free(AVCodecContext *avctx)
+{
+ vp8_decode_flush(avctx);
+ return 0;
+}
+
+AVCodec vp8_decoder = {
+ "vp8",
+ AVMEDIA_TYPE_VIDEO,
+ CODEC_ID_VP8,
+ sizeof(VP8Context),
+ vp8_decode_init,
+ NULL,
+ vp8_decode_free,
+ vp8_decode_frame,
+ CODEC_CAP_DR1,
+ .flush = vp8_decode_flush,
+ .long_name = NULL_IF_CONFIG_SMALL("On2 VP8"),
+};
--- /dev/null
+/**
+ * VP8 compatible video decoder
+ *
+ * Copyright (C) 2010 David Conrad
+ * Copyright (C) 2010 Ronald S. Bultje
+ *
+ * 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
+ */
+
+// TODO: move these #define ane enum to a better header...
+
+#define VP8_MAX_QUANT 127
+
+enum dct_token {
+ DCT_0,
+ DCT_1,
+ DCT_2,
+ DCT_3,
+ DCT_4,
+ DCT_CAT1,
+ DCT_CAT2,
+ DCT_CAT3,
+ DCT_CAT4,
+ DCT_CAT5,
+ DCT_CAT6,
+ DCT_EOB,
+
+ NUM_DCT_TOKENS
+};
+
+#include "h264pred.h"
+
+// used to signal 4x4 intra pred in luma MBs
+#define MODE_I4x4 4
+
+enum inter_mvmode {
+ VP8_MVMODE_NEAREST = MODE_I4x4 + 1,
+ VP8_MVMODE_NEAR,
+ VP8_MVMODE_ZERO,
+ VP8_MVMODE_NEW,
+ VP8_MVMODE_SPLIT
+};
+
+enum inter_submvmode {
+ VP8_SUBMVMODE_LEFT4X4,
+ VP8_SUBMVMODE_TOP4X4,
+ VP8_SUBMVMODE_ZERO4X4,
+ VP8_SUBMVMODE_NEW4X4
+};
+
+static const uint8_t vp8_pred4x4_mode[] =
+{
+ [DC_PRED8x8] = DC_PRED,
+ [VERT_PRED8x8] = VERT_PRED,
+ [HOR_PRED8x8] = HOR_PRED,
+ [PLANE_PRED8x8] = TM_VP8_PRED,
+};
+
+static const int8_t vp8_pred16x16_tree_intra[4][2] =
+{
+ { -MODE_I4x4, 1 }, // '0'
+ { 2, 3 },
+ { -DC_PRED8x8, -VERT_PRED8x8 }, // '100', '101'
+ { -HOR_PRED8x8, -PLANE_PRED8x8 }, // '110', '111'
+};
+
+static const int8_t vp8_pred16x16_tree_inter[4][2] =
+{
+ { -DC_PRED8x8, 1 }, // '0'
+ { 2, 3 },
+ { -VERT_PRED8x8, -HOR_PRED8x8 }, // '100', '101'
+ { -PLANE_PRED8x8, -MODE_I4x4 }, // '110', '111'
+};
+
+static const int vp8_mode_contexts[6][4] = {
+ { 7, 1, 1, 143 },
+ { 14, 18, 14, 107 },
+ { 135, 64, 57, 68 },
+ { 60, 56, 128, 65 },
+ { 159, 134, 128, 34 },
+ { 234, 188, 128, 28 },
+};
+
+static const int8_t vp8_pred16x16_tree_mvinter[4][2] = {
+ { -VP8_MVMODE_ZERO, 1 }, // '0'
+ { -VP8_MVMODE_NEAREST, 2 }, // '10'
+ { -VP8_MVMODE_NEAR, 3 }, // '110'
+ { -VP8_MVMODE_NEW, -VP8_MVMODE_SPLIT } // '1110', '1111'
+};
+
+static const int8_t vp8_small_mvtree[7][2] = {
+ { 1, 4 },
+ { 2, 3 },
+ { -0, -1 }, // '000', '001'
+ { -2, -3 }, // '010', '011'
+ { 5, 6 },
+ { -4, -5 }, // '100', '101'
+ { -6, -7 } // '110', '111'
+};
+
+static const uint8_t vp8_mbsplits[4][16] = {
+ { 0, 0, 0, 0, 0, 0, 0, 0,
+ 1, 1, 1, 1, 1, 1, 1, 1 },
+ { 0, 0, 1, 1, 0, 0, 1, 1,
+ 0, 0, 1, 1, 0, 0, 1, 1 },
+ { 0, 0, 1, 1, 0, 0, 1, 1,
+ 2, 2, 3, 3, 2, 2, 3, 3 },
+ { 0, 1, 2, 3, 4, 5, 6, 7,
+ 8, 9, 10, 11, 12, 13, 14, 15 }
+};
+
+static const uint8_t vp8_mbfirstidx[4][16] = {
+ { 0, 8 }, { 0, 2 }, { 0, 2, 8, 10 },
+ { 0, 1, 2, 3, 4, 5, 6, 7,
+ 8, 9, 10, 11, 12, 13, 14, 15 }
+};
+
+static const int8_t vp8_mbsplit_tree[3][2] = {
+ { -3, 1 }, // '0' - 16 individual MVs
+ { -2, 2 }, // '10' - quarter-based MVs
+ { -0, -1 } // '110' - top/bottom MVs,
+ // '111' - left/right MVs
+};
+static const uint8_t vp8_mbsplit_count[4] = { 2, 2, 4, 16 };
+static const uint8_t vp8_mbsplit_prob[3] = { 110, 111, 150 };
+
+static const uint8_t vp8_submv_prob[5][3] = {
+ { 147, 136, 18 },
+ { 106, 145, 1 },
+ { 179, 121, 1 },
+ { 223, 1, 34 },
+ { 208, 1, 1 }
+};
+
+static const int8_t vp8_submv_ref_tree[3][2] = {
+ { -VP8_SUBMVMODE_LEFT4X4, 1 }, // '0'
+ { -VP8_SUBMVMODE_TOP4X4, 2 }, // '10'
+ { -VP8_SUBMVMODE_ZERO4X4, -VP8_SUBMVMODE_NEW4X4 } // '110', '111'
+};
+
+static const uint8_t vp8_pred16x16_prob_intra[4] = { 145, 156, 163, 128 };
+static const uint8_t vp8_pred16x16_prob_inter[4] = { 112, 86, 140, 37 };
+
+static const int8_t vp8_pred4x4_tree[9][2] =
+{
+ { -DC_PRED, 1 }, // '0'
+ { -TM_VP8_PRED, 2 }, // '10'
+ { -VERT_PRED, 3 }, // '110'
+ { 4, 6 },
+ { -HOR_PRED, 5 }, // '11100'
+ { -DIAG_DOWN_RIGHT_PRED, -VERT_RIGHT_PRED }, // '111010', '111011'
+ { -DIAG_DOWN_LEFT_PRED, 7 }, // '11110'
+ { -VERT_LEFT_PRED, 8 }, // '111110'
+ { -HOR_DOWN_PRED, -HOR_UP_PRED }, // '1111110', '1111111'
+};
+
+static const int8_t vp8_pred8x8c_tree[3][2] =
+{
+ { -DC_PRED8x8, 1 }, // '0'
+ { -VERT_PRED8x8, 2 }, // '10
+ { -HOR_PRED8x8, -PLANE_PRED8x8 }, // '110', '111'
+};
+
+static const uint8_t vp8_pred8x8c_prob_intra[3] = { 142, 114, 183 };
+static const uint8_t vp8_pred8x8c_prob_inter[3] = { 162, 101, 204 };
+
+static const uint8_t vp8_pred4x4_prob_inter[9] =
+{
+ 120, 90, 79, 133, 87, 85, 80, 111, 151
+};
+
+static const uint8_t vp8_pred4x4_prob_intra[10][10][9] =
+{
+ {
+ { 39, 53, 200, 87, 26, 21, 43, 232, 171 },
+ { 56, 34, 51, 104, 114, 102, 29, 93, 77 },
+ { 88, 88, 147, 150, 42, 46, 45, 196, 205 },
+ { 107, 54, 32, 26, 51, 1, 81, 43, 31 },
+ { 39, 28, 85, 171, 58, 165, 90, 98, 64 },
+ { 34, 22, 116, 206, 23, 34, 43, 166, 73 },
+ { 34, 19, 21, 102, 132, 188, 16, 76, 124 },
+ { 68, 25, 106, 22, 64, 171, 36, 225, 114 },
+ { 62, 18, 78, 95, 85, 57, 50, 48, 51 },
+ { 43, 97, 183, 117, 85, 38, 35, 179, 61 },
+ },
+ {
+ { 112, 113, 77, 85, 179, 255, 38, 120, 114 },
+ { 40, 42, 1, 196, 245, 209, 10, 25, 109 },
+ { 193, 101, 35, 159, 215, 111, 89, 46, 111 },
+ { 100, 80, 8, 43, 154, 1, 51, 26, 71 },
+ { 88, 43, 29, 140, 166, 213, 37, 43, 154 },
+ { 61, 63, 30, 155, 67, 45, 68, 1, 209 },
+ { 41, 40, 5, 102, 211, 183, 4, 1, 221 },
+ { 142, 78, 78, 16, 255, 128, 34, 197, 171 },
+ { 51, 50, 17, 168, 209, 192, 23, 25, 82 },
+ { 60, 148, 31, 172, 219, 228, 21, 18, 111 },
+ },
+ {
+ { 175, 69, 143, 80, 85, 82, 72, 155, 103 },
+ { 56, 58, 10, 171, 218, 189, 17, 13, 152 },
+ { 231, 120, 48, 89, 115, 113, 120, 152, 112 },
+ { 144, 71, 10, 38, 171, 213, 144, 34, 26 },
+ { 114, 26, 17, 163, 44, 195, 21, 10, 173 },
+ { 121, 24, 80, 195, 26, 62, 44, 64, 85 },
+ { 63, 20, 8, 114, 114, 208, 12, 9, 226 },
+ { 170, 46, 55, 19, 136, 160, 33, 206, 71 },
+ { 81, 40, 11, 96, 182, 84, 29, 16, 36 },
+ { 152, 179, 64, 126, 170, 118, 46, 70, 95 },
+ },
+ {
+ { 75, 79, 123, 47, 51, 128, 81, 171, 1 },
+ { 57, 17, 5, 71, 102, 57, 53, 41, 49 },
+ { 125, 98, 42, 88, 104, 85, 117, 175, 82 },
+ { 115, 21, 2, 10, 102, 255, 166, 23, 6 },
+ { 38, 33, 13, 121, 57, 73, 26, 1, 85 },
+ { 41, 10, 67, 138, 77, 110, 90, 47, 114 },
+ { 57, 18, 10, 102, 102, 213, 34, 20, 43 },
+ { 101, 29, 16, 10, 85, 128, 101, 196, 26 },
+ { 117, 20, 15, 36, 163, 128, 68, 1, 26 },
+ { 95, 84, 53, 89, 128, 100, 113, 101, 45 },
+ },
+ {
+ { 63, 59, 90, 180, 59, 166, 93, 73, 154 },
+ { 40, 40, 21, 116, 143, 209, 34, 39, 175 },
+ { 138, 31, 36, 171, 27, 166, 38, 44, 229 },
+ { 57, 46, 22, 24, 128, 1, 54, 17, 37 },
+ { 47, 15, 16, 183, 34, 223, 49, 45, 183 },
+ { 46, 17, 33, 183, 6, 98, 15, 32, 183 },
+ { 40, 3, 9, 115, 51, 192, 18, 6, 223 },
+ { 65, 32, 73, 115, 28, 128, 23, 128, 205 },
+ { 87, 37, 9, 115, 59, 77, 64, 21, 47 },
+ { 67, 87, 58, 169, 82, 115, 26, 59, 179 },
+ },
+ {
+ { 54, 57, 112, 184, 5, 41, 38, 166, 213 },
+ { 30, 34, 26, 133, 152, 116, 10, 32, 134 },
+ { 104, 55, 44, 218, 9, 54, 53, 130, 226 },
+ { 75, 32, 12, 51, 192, 255, 160, 43, 51 },
+ { 39, 19, 53, 221, 26, 114, 32, 73, 255 },
+ { 31, 9, 65, 234, 2, 15, 1, 118, 73 },
+ { 56, 21, 23, 111, 59, 205, 45, 37, 192 },
+ { 88, 31, 35, 67, 102, 85, 55, 186, 85 },
+ { 55, 38, 70, 124, 73, 102, 1, 34, 98 },
+ { 64, 90, 70, 205, 40, 41, 23, 26, 57 },
+ },
+ {
+ { 86, 40, 64, 135, 148, 224, 45, 183, 128 },
+ { 22, 26, 17, 131, 240, 154, 14, 1, 209 },
+ { 164, 50, 31, 137, 154, 133, 25, 35, 218 },
+ { 83, 12, 13, 54, 192, 255, 68, 47, 28 },
+ { 45, 16, 21, 91, 64, 222, 7, 1, 197 },
+ { 56, 21, 39, 155, 60, 138, 23, 102, 213 },
+ { 18, 11, 7, 63, 144, 171, 4, 4, 246 },
+ { 85, 26, 85, 85, 128, 128, 32, 146, 171 },
+ { 35, 27, 10, 146, 174, 171, 12, 26, 128 },
+ { 51, 103, 44, 131, 131, 123, 31, 6, 158 },
+ },
+ {
+ { 68, 45, 128, 34, 1, 47, 11, 245, 171 },
+ { 62, 17, 19, 70, 146, 85, 55, 62, 70 },
+ { 102, 61, 71, 37, 34, 53, 31, 243, 192 },
+ { 75, 15, 9, 9, 64, 255, 184, 119, 16 },
+ { 37, 43, 37, 154, 100, 163, 85, 160, 1 },
+ { 63, 9, 92, 136, 28, 64, 32, 201, 85 },
+ { 56, 8, 17, 132, 137, 255, 55, 116, 128 },
+ { 86, 6, 28, 5, 64, 255, 25, 248, 1 },
+ { 58, 15, 20, 82, 135, 57, 26, 121, 40 },
+ { 69, 60, 71, 38, 73, 119, 28, 222, 37 },
+ },
+ {
+ { 101, 75, 128, 139, 118, 146, 116, 128, 85 },
+ { 56, 41, 15, 176, 236, 85, 37, 9, 62 },
+ { 190, 80, 35, 99, 180, 80, 126, 54, 45 },
+ { 146, 36, 19, 30, 171, 255, 97, 27, 20 },
+ { 71, 30, 17, 119, 118, 255, 17, 18, 138 },
+ { 101, 38, 60, 138, 55, 70, 43, 26, 142 },
+ { 32, 41, 20, 117, 151, 142, 20, 21, 163 },
+ { 138, 45, 61, 62, 219, 1, 81, 188, 64 },
+ { 112, 19, 12, 61, 195, 128, 48, 4, 24 },
+ { 85, 126, 47, 87, 176, 51, 41, 20, 32 },
+ },
+ {
+ { 66, 102, 167, 99, 74, 62, 40, 234, 128 },
+ { 41, 53, 9, 178, 241, 141, 26, 8, 107 },
+ { 134, 183, 89, 137, 98, 101, 106, 165, 148 },
+ { 104, 79, 12, 27, 217, 255, 87, 17, 7 },
+ { 74, 43, 26, 146, 73, 166, 49, 23, 157 },
+ { 65, 38, 105, 160, 51, 52, 31, 115, 128 },
+ { 47, 41, 14, 110, 182, 183, 21, 17, 194 },
+ { 87, 68, 71, 44, 114, 51, 15, 186, 23 },
+ { 66, 45, 25, 102, 197, 189, 23, 18, 22 },
+ { 72, 187, 100, 130, 157, 111, 32, 75, 80 },
+ },
+};
+
+static const int8_t vp8_segmentid_tree[][2] =
+{
+ { 1, 2 },
+ { -0, -1 }, // '00', '01'
+ { -2, -3 }, // '10', '11'
+};
+
+static const uint8_t vp8_coeff_band[16] =
+{
+ 0, 1, 2, 3, 6, 4, 5, 6, 6, 6, 6, 6, 6, 6, 6, 7
+};
+
+static const int8_t vp8_coeff_tree[NUM_DCT_TOKENS-1][2] =
+{
+ { -DCT_EOB, 1 }, // '0'
+ { -DCT_0, 2 }, // '10'
+ { -DCT_1, 3 }, // '110'
+ { 4, 6 },
+ { -DCT_2, 5 }, // '11100'
+ { -DCT_3, -DCT_4 }, // '111010', '111011'
+ { 7, 8 },
+ { -DCT_CAT1, -DCT_CAT2 }, // '111100', '111101'
+ { 9, 10 },
+ { -DCT_CAT3, -DCT_CAT4 }, // '1111100', '1111101'
+ { -DCT_CAT5, -DCT_CAT6 }, // '1111110', '1111111'
+};
+
+static const uint8_t vp8_dct_cat1_prob[] = { 159, 0 };
+static const uint8_t vp8_dct_cat2_prob[] = { 165, 145, 0 };
+static const uint8_t vp8_dct_cat3_prob[] = { 173, 148, 140, 0 };
+static const uint8_t vp8_dct_cat4_prob[] = { 176, 155, 140, 135, 0 };
+static const uint8_t vp8_dct_cat5_prob[] = { 180, 157, 141, 134, 130, 0 };
+static const uint8_t vp8_dct_cat6_prob[] = { 254, 254, 243, 230, 196, 177, 153, 140, 133, 130, 129, 0 };
+
+static const uint8_t * const vp8_dct_cat_prob[6] =
+{
+ vp8_dct_cat1_prob,
+ vp8_dct_cat2_prob,
+ vp8_dct_cat3_prob,
+ vp8_dct_cat4_prob,
+ vp8_dct_cat5_prob,
+ vp8_dct_cat6_prob,
+};
+
+static const uint8_t vp8_dct_cat_offset[6] = { 5, 7, 11, 19, 35, 67 };
+
+static const uint8_t vp8_token_default_probs[4][8][3][NUM_DCT_TOKENS-1] =
+{
+ {
+ {
+ { 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128 },
+ { 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128 },
+ { 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128 },
+ },
+ {
+ { 253, 136, 254, 255, 228, 219, 128, 128, 128, 128, 128 },
+ { 189, 129, 242, 255, 227, 213, 255, 219, 128, 128, 128 },
+ { 106, 126, 227, 252, 214, 209, 255, 255, 128, 128, 128 },
+ },
+ {
+ { 1, 98, 248, 255, 236, 226, 255, 255, 128, 128, 128 },
+ { 181, 133, 238, 254, 221, 234, 255, 154, 128, 128, 128 },
+ { 78, 134, 202, 247, 198, 180, 255, 219, 128, 128, 128 },
+ },
+ {
+ { 1, 185, 249, 255, 243, 255, 128, 128, 128, 128, 128 },
+ { 184, 150, 247, 255, 236, 224, 128, 128, 128, 128, 128 },
+ { 77, 110, 216, 255, 236, 230, 128, 128, 128, 128, 128 },
+ },
+ {
+ { 1, 101, 251, 255, 241, 255, 128, 128, 128, 128, 128 },
+ { 170, 139, 241, 252, 236, 209, 255, 255, 128, 128, 128 },
+ { 37, 116, 196, 243, 228, 255, 255, 255, 128, 128, 128 },
+ },
+ {
+ { 1, 204, 254, 255, 245, 255, 128, 128, 128, 128, 128 },
+ { 207, 160, 250, 255, 238, 128, 128, 128, 128, 128, 128 },
+ { 102, 103, 231, 255, 211, 171, 128, 128, 128, 128, 128 },
+ },
+ {
+ { 1, 152, 252, 255, 240, 255, 128, 128, 128, 128, 128 },
+ { 177, 135, 243, 255, 234, 225, 128, 128, 128, 128, 128 },
+ { 80, 129, 211, 255, 194, 224, 128, 128, 128, 128, 128 },
+ },
+ {
+ { 1, 1, 255, 128, 128, 128, 128, 128, 128, 128, 128 },
+ { 246, 1, 255, 128, 128, 128, 128, 128, 128, 128, 128 },
+ { 255, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128 },
+ },
+ },
+ {
+ {
+ { 198, 35, 237, 223, 193, 187, 162, 160, 145, 155, 62 },
+ { 131, 45, 198, 221, 172, 176, 220, 157, 252, 221, 1 },
+ { 68, 47, 146, 208, 149, 167, 221, 162, 255, 223, 128 },
+ },
+ {
+ { 1, 149, 241, 255, 221, 224, 255, 255, 128, 128, 128 },
+ { 184, 141, 234, 253, 222, 220, 255, 199, 128, 128, 128 },
+ { 81, 99, 181, 242, 176, 190, 249, 202, 255, 255, 128 },
+ },
+ {
+ { 1, 129, 232, 253, 214, 197, 242, 196, 255, 255, 128 },
+ { 99, 121, 210, 250, 201, 198, 255, 202, 128, 128, 128 },
+ { 23, 91, 163, 242, 170, 187, 247, 210, 255, 255, 128 },
+ },
+ {
+ { 1, 200, 246, 255, 234, 255, 128, 128, 128, 128, 128 },
+ { 109, 178, 241, 255, 231, 245, 255, 255, 128, 128, 128 },
+ { 44, 130, 201, 253, 205, 192, 255, 255, 128, 128, 128 },
+ },
+ {
+ { 1, 132, 239, 251, 219, 209, 255, 165, 128, 128, 128 },
+ { 94, 136, 225, 251, 218, 190, 255, 255, 128, 128, 128 },
+ { 22, 100, 174, 245, 186, 161, 255, 199, 128, 128, 128 },
+ },
+ {
+ { 1, 182, 249, 255, 232, 235, 128, 128, 128, 128, 128 },
+ { 124, 143, 241, 255, 227, 234, 128, 128, 128, 128, 128 },
+ { 35, 77, 181, 251, 193, 211, 255, 205, 128, 128, 128 },
+ },
+ {
+ { 1, 157, 247, 255, 236, 231, 255, 255, 128, 128, 128 },
+ { 121, 141, 235, 255, 225, 227, 255, 255, 128, 128, 128 },
+ { 45, 99, 188, 251, 195, 217, 255, 224, 128, 128, 128 },
+ },
+ {
+ { 1, 1, 251, 255, 213, 255, 128, 128, 128, 128, 128 },
+ { 203, 1, 248, 255, 255, 128, 128, 128, 128, 128, 128 },
+ { 137, 1, 177, 255, 224, 255, 128, 128, 128, 128, 128 },
+ },
+ },
+ {
+ {
+ { 253, 9, 248, 251, 207, 208, 255, 192, 128, 128, 128 },
+ { 175, 13, 224, 243, 193, 185, 249, 198, 255, 255, 128 },
+ { 73, 17, 171, 221, 161, 179, 236, 167, 255, 234, 128 },
+ },
+ {
+ { 1, 95, 247, 253, 212, 183, 255, 255, 128, 128, 128 },
+ { 239, 90, 244, 250, 211, 209, 255, 255, 128, 128, 128 },
+ { 155, 77, 195, 248, 188, 195, 255, 255, 128, 128, 128 },
+ },
+ {
+ { 1, 24, 239, 251, 218, 219, 255, 205, 128, 128, 128 },
+ { 201, 51, 219, 255, 196, 186, 128, 128, 128, 128, 128 },
+ { 69, 46, 190, 239, 201, 218, 255, 228, 128, 128, 128 },
+ },
+ {
+ { 1, 191, 251, 255, 255, 128, 128, 128, 128, 128, 128 },
+ { 223, 165, 249, 255, 213, 255, 128, 128, 128, 128, 128 },
+ { 141, 124, 248, 255, 255, 128, 128, 128, 128, 128, 128 },
+ },
+ {
+ { 1, 16, 248, 255, 255, 128, 128, 128, 128, 128, 128 },
+ { 190, 36, 230, 255, 236, 255, 128, 128, 128, 128, 128 },
+ { 149, 1, 255, 128, 128, 128, 128, 128, 128, 128, 128 },
+ },
+ {
+ { 1, 226, 255, 128, 128, 128, 128, 128, 128, 128, 128 },
+ { 247, 192, 255, 128, 128, 128, 128, 128, 128, 128, 128 },
+ { 240, 128, 255, 128, 128, 128, 128, 128, 128, 128, 128 },
+ },
+ {
+ { 1, 134, 252, 255, 255, 128, 128, 128, 128, 128, 128 },
+ { 213, 62, 250, 255, 255, 128, 128, 128, 128, 128, 128 },
+ { 55, 93, 255, 128, 128, 128, 128, 128, 128, 128, 128 },
+ },
+ {
+ { 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128 },
+ { 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128 },
+ { 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128 },
+ },
+ },
+ {
+ {
+ { 202, 24, 213, 235, 186, 191, 220, 160, 240, 175, 255 },
+ { 126, 38, 182, 232, 169, 184, 228, 174, 255, 187, 128 },
+ { 61, 46, 138, 219, 151, 178, 240, 170, 255, 216, 128 },
+ },
+ {
+ { 1, 112, 230, 250, 199, 191, 247, 159, 255, 255, 128 },
+ { 166, 109, 228, 252, 211, 215, 255, 174, 128, 128, 128 },
+ { 39, 77, 162, 232, 172, 180, 245, 178, 255, 255, 128 },
+ },
+ {
+ { 1, 52, 220, 246, 198, 199, 249, 220, 255, 255, 128 },
+ { 124, 74, 191, 243, 183, 193, 250, 221, 255, 255, 128 },
+ { 24, 71, 130, 219, 154, 170, 243, 182, 255, 255, 128 },
+ },
+ {
+ { 1, 182, 225, 249, 219, 240, 255, 224, 128, 128, 128 },
+ { 149, 150, 226, 252, 216, 205, 255, 171, 128, 128, 128 },
+ { 28, 108, 170, 242, 183, 194, 254, 223, 255, 255, 128 },
+ },
+ {
+ { 1, 81, 230, 252, 204, 203, 255, 192, 128, 128, 128 },
+ { 123, 102, 209, 247, 188, 196, 255, 233, 128, 128, 128 },
+ { 20, 95, 153, 243, 164, 173, 255, 203, 128, 128, 128 },
+ },
+ {
+ { 1, 222, 248, 255, 216, 213, 128, 128, 128, 128, 128 },
+ { 168, 175, 246, 252, 235, 205, 255, 255, 128, 128, 128 },
+ { 47, 116, 215, 255, 211, 212, 255, 255, 128, 128, 128 },
+ },
+ {
+ { 1, 121, 236, 253, 212, 214, 255, 255, 128, 128, 128 },
+ { 141, 84, 213, 252, 201, 202, 255, 219, 128, 128, 128 },
+ { 42, 80, 160, 240, 162, 185, 255, 205, 128, 128, 128 },
+ },
+ {
+ { 1, 1, 255, 128, 128, 128, 128, 128, 128, 128, 128 },
+ { 244, 1, 255, 128, 128, 128, 128, 128, 128, 128, 128 },
+ { 238, 1, 255, 128, 128, 128, 128, 128, 128, 128, 128 },
+ },
+ },
+};
+
+static const uint8_t vp8_token_update_probs[4][8][3][NUM_DCT_TOKENS-1] =
+{
+ {
+ {
+ { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
+ { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
+ { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
+ },
+ {
+ { 176, 246, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
+ { 223, 241, 252, 255, 255, 255, 255, 255, 255, 255, 255 },
+ { 249, 253, 253, 255, 255, 255, 255, 255, 255, 255, 255 },
+ },
+ {
+ { 255, 244, 252, 255, 255, 255, 255, 255, 255, 255, 255 },
+ { 234, 254, 254, 255, 255, 255, 255, 255, 255, 255, 255 },
+ { 253, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
+ },
+ {
+ { 255, 246, 254, 255, 255, 255, 255, 255, 255, 255, 255 },
+ { 239, 253, 254, 255, 255, 255, 255, 255, 255, 255, 255 },
+ { 254, 255, 254, 255, 255, 255, 255, 255, 255, 255, 255 },
+ },
+ {
+ { 255, 248, 254, 255, 255, 255, 255, 255, 255, 255, 255 },
+ { 251, 255, 254, 255, 255, 255, 255, 255, 255, 255, 255 },
+ { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
+ },
+ {
+ { 255, 253, 254, 255, 255, 255, 255, 255, 255, 255, 255 },
+ { 251, 254, 254, 255, 255, 255, 255, 255, 255, 255, 255 },
+ { 254, 255, 254, 255, 255, 255, 255, 255, 255, 255, 255 },
+ },
+ {
+ { 255, 254, 253, 255, 254, 255, 255, 255, 255, 255, 255 },
+ { 250, 255, 254, 255, 254, 255, 255, 255, 255, 255, 255 },
+ { 254, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
+ },
+ {
+ { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
+ { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
+ { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
+ },
+ },
+ {
+ {
+ { 217, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
+ { 225, 252, 241, 253, 255, 255, 254, 255, 255, 255, 255 },
+ { 234, 250, 241, 250, 253, 255, 253, 254, 255, 255, 255 },
+ },
+ {
+ { 255, 254, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
+ { 223, 254, 254, 255, 255, 255, 255, 255, 255, 255, 255 },
+ { 238, 253, 254, 254, 255, 255, 255, 255, 255, 255, 255 },
+ },
+ {
+ { 255, 248, 254, 255, 255, 255, 255, 255, 255, 255, 255 },
+ { 249, 254, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
+ { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
+ },
+ {
+ { 255, 253, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
+ { 247, 254, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
+ { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
+ },
+ {
+ { 255, 253, 254, 255, 255, 255, 255, 255, 255, 255, 255 },
+ { 252, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
+ { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
+ },
+ {
+ { 255, 254, 254, 255, 255, 255, 255, 255, 255, 255, 255 },
+ { 253, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
+ { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
+ },
+ {
+ { 255, 254, 253, 255, 255, 255, 255, 255, 255, 255, 255 },
+ { 250, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
+ { 254, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
+ },
+ {
+ { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
+ { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
+ { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
+ },
+ },
+ {
+ {
+ { 186, 251, 250, 255, 255, 255, 255, 255, 255, 255, 255 },
+ { 234, 251, 244, 254, 255, 255, 255, 255, 255, 255, 255 },
+ { 251, 251, 243, 253, 254, 255, 254, 255, 255, 255, 255 },
+ },
+ {
+ { 255, 253, 254, 255, 255, 255, 255, 255, 255, 255, 255 },
+ { 236, 253, 254, 255, 255, 255, 255, 255, 255, 255, 255 },
+ { 251, 253, 253, 254, 254, 255, 255, 255, 255, 255, 255 },
+ },
+ {
+ { 255, 254, 254, 255, 255, 255, 255, 255, 255, 255, 255 },
+ { 254, 254, 254, 255, 255, 255, 255, 255, 255, 255, 255 },
+ { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
+ },
+ {
+ { 255, 254, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
+ { 254, 254, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
+ { 254, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
+ },
+ {
+ { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
+ { 254, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
+ { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
+ },
+ {
+ { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
+ { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
+ { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
+ },
+ {
+ { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
+ { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
+ { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
+ },
+ {
+ { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
+ { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
+ { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
+ },
+ },
+ {
+ {
+ { 248, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
+ { 250, 254, 252, 254, 255, 255, 255, 255, 255, 255, 255 },
+ { 248, 254, 249, 253, 255, 255, 255, 255, 255, 255, 255 },
+ },
+ {
+ { 255, 253, 253, 255, 255, 255, 255, 255, 255, 255, 255 },
+ { 246, 253, 253, 255, 255, 255, 255, 255, 255, 255, 255 },
+ { 252, 254, 251, 254, 254, 255, 255, 255, 255, 255, 255 },
+ },
+ {
+ { 255, 254, 252, 255, 255, 255, 255, 255, 255, 255, 255 },
+ { 248, 254, 253, 255, 255, 255, 255, 255, 255, 255, 255 },
+ { 253, 255, 254, 254, 255, 255, 255, 255, 255, 255, 255 },
+ },
+ {
+ { 255, 251, 254, 255, 255, 255, 255, 255, 255, 255, 255 },
+ { 245, 251, 254, 255, 255, 255, 255, 255, 255, 255, 255 },
+ { 253, 253, 254, 255, 255, 255, 255, 255, 255, 255, 255 },
+ },
+ {
+ { 255, 251, 253, 255, 255, 255, 255, 255, 255, 255, 255 },
+ { 252, 253, 254, 255, 255, 255, 255, 255, 255, 255, 255 },
+ { 255, 254, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
+ },
+ {
+ { 255, 252, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
+ { 249, 255, 254, 255, 255, 255, 255, 255, 255, 255, 255 },
+ { 255, 255, 254, 255, 255, 255, 255, 255, 255, 255, 255 },
+ },
+ {
+ { 255, 255, 253, 255, 255, 255, 255, 255, 255, 255, 255 },
+ { 250, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
+ { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
+ },
+ {
+ { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
+ { 254, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
+ { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
+ },
+ },
+};
+
+// fixme: copied from h264data.h
+static const uint8_t zigzag_scan[16]={
+ 0+0*4, 1+0*4, 0+1*4, 0+2*4,
+ 1+1*4, 2+0*4, 3+0*4, 2+1*4,
+ 1+2*4, 0+3*4, 1+3*4, 2+2*4,
+ 3+1*4, 3+2*4, 2+3*4, 3+3*4,
+};
+
+static const uint8_t vp8_dc_qlookup[VP8_MAX_QUANT+1] =
+{
+ 4, 5, 6, 7, 8, 9, 10, 10, 11, 12, 13, 14, 15, 16, 17, 17,
+ 18, 19, 20, 20, 21, 21, 22, 22, 23, 23, 24, 25, 25, 26, 27, 28,
+ 29, 30, 31, 32, 33, 34, 35, 36, 37, 37, 38, 39, 40, 41, 42, 43,
+ 44, 45, 46, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58,
+ 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74,
+ 75, 76, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89,
+ 91, 93, 95, 96, 98, 100, 101, 102, 104, 106, 108, 110, 112, 114, 116, 118,
+ 122, 124, 126, 128, 130, 132, 134, 136, 138, 140, 143, 145, 148, 151, 154, 157,
+};
+
+static const uint16_t vp8_ac_qlookup[VP8_MAX_QUANT+1] =
+{
+ 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19,
+ 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35,
+ 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51,
+ 52, 53, 54, 55, 56, 57, 58, 60, 62, 64, 66, 68, 70, 72, 74, 76,
+ 78, 80, 82, 84, 86, 88, 90, 92, 94, 96, 98, 100, 102, 104, 106, 108,
+ 110, 112, 114, 116, 119, 122, 125, 128, 131, 134, 137, 140, 143, 146, 149, 152,
+ 155, 158, 161, 164, 167, 170, 173, 177, 181, 185, 189, 193, 197, 201, 205, 209,
+ 213, 217, 221, 225, 229, 234, 239, 245, 249, 254, 259, 264, 269, 274, 279, 284,
+};
+
+static const uint8_t vp8_mv_update_prob[2][19] = {
+ { 237,
+ 246,
+ 253, 253, 254, 254, 254, 254, 254,
+ 254, 254, 254, 254, 254, 250, 250, 252, 254, 254 },
+ { 231,
+ 243,
+ 245, 253, 254, 254, 254, 254, 254,
+ 254, 254, 254, 254, 254, 251, 251, 254, 254, 254 }
+};
+
+static const uint8_t vp8_mv_default_prob[2][19] = {
+ { 162,
+ 128,
+ 225, 146, 172, 147, 214, 39, 156,
+ 128, 129, 132, 75, 145, 178, 206, 239, 254, 254 },
+ { 164,
+ 128,
+ 204, 170, 119, 235, 140, 230, 228,
+ 128, 130, 130, 74, 148, 180, 203, 236, 254, 254 }
+};
projects / platform / upstream / libav.git / commitdiff