[FFmpeg-cvslog] r9420 - in trunk: Changelog doc/ffmpeg-doc.texi libavcodec/Makefile libavcodec/allcodecs.c libavcodec/allcodecs.h libavcodec/roqvideo.h libavcodec/roqvideoenc.c
benoit
subversion
Mon Jun 25 14:09:24 CEST 2007
Author: benoit
Date: Mon Jun 25 14:09:23 2007
New Revision: 9420
Log:
RoQ video encoder
patch by Vitor: \vitor1001 gmail com/
original thread: [FFmpeg-devel] RoQ video encoder (take 3)
date: 06/08/2007 10:34 PM
Added:
trunk/libavcodec/roqvideoenc.c
Modified:
trunk/Changelog
trunk/doc/ffmpeg-doc.texi
trunk/libavcodec/Makefile
trunk/libavcodec/allcodecs.c
trunk/libavcodec/allcodecs.h
trunk/libavcodec/roqvideo.h
Modified: trunk/Changelog
==============================================================================
--- trunk/Changelog (original)
+++ trunk/Changelog Mon Jun 25 14:09:23 2007
@@ -87,6 +87,7 @@ version <next>
- extern C declarations for C++ removed from headers
- sws_flags command line option
- codebook generator
+- RoQ video encoder
version 0.4.9-pre1:
Modified: trunk/doc/ffmpeg-doc.texi
==============================================================================
--- trunk/doc/ffmpeg-doc.texi (original)
+++ trunk/doc/ffmpeg-doc.texi Mon Jun 25 14:09:23 2007
@@ -1027,7 +1027,7 @@ following image formats are supported:
@item Cirrus Logic AccuPak @tab @tab X @tab fourcc: CLJR
@item 4X Video @tab @tab X @tab Used in certain computer games.
@item Sony Playstation MDEC @tab @tab X
- at item Id RoQ @tab @tab X @tab Used in Quake III, Jedi Knight 2, other computer games.
+ at item Id RoQ @tab X @tab X @tab Used in Quake III, Jedi Knight 2, other computer games.
@item Xan/WC3 @tab @tab X @tab Used in Wing Commander III .MVE files.
@item Interplay Video @tab @tab X @tab Used in Interplay .MVE files.
@item Apple Animation @tab @tab X @tab fourcc: 'rle '
Modified: trunk/libavcodec/Makefile
==============================================================================
--- trunk/libavcodec/Makefile (original)
+++ trunk/libavcodec/Makefile Mon Jun 25 14:09:23 2007
@@ -135,6 +135,7 @@ OBJS-$(CONFIG_QTRLE_DECODER) +
OBJS-$(CONFIG_RA_144_DECODER) += ra144.o
OBJS-$(CONFIG_RA_288_DECODER) += ra288.o
OBJS-$(CONFIG_ROQ_DECODER) += roqvideodec.o roqvideo.o
+OBJS-$(CONFIG_ROQ_ENCODER) += roqvideoenc.o roqvideo.o elbg.o
OBJS-$(CONFIG_ROQ_DPCM_DECODER) += dpcm.o
OBJS-$(CONFIG_ROQ_DPCM_ENCODER) += roqaudioenc.o
OBJS-$(CONFIG_RPZA_DECODER) += rpza.o
Modified: trunk/libavcodec/allcodecs.c
==============================================================================
--- trunk/libavcodec/allcodecs.c (original)
+++ trunk/libavcodec/allcodecs.c Mon Jun 25 14:09:23 2007
@@ -124,7 +124,7 @@ void avcodec_register_all(void)
REGISTER_DECODER(QPEG, qpeg);
REGISTER_DECODER(QTRLE, qtrle);
REGISTER_ENCDEC (RAWVIDEO, rawvideo);
- REGISTER_DECODER(ROQ, roq);
+ REGISTER_ENCDEC (ROQ, roq);
REGISTER_DECODER(RPZA, rpza);
REGISTER_ENCDEC (RV10, rv10);
REGISTER_ENCDEC (RV20, rv20);
Modified: trunk/libavcodec/allcodecs.h
==============================================================================
--- trunk/libavcodec/allcodecs.h (original)
+++ trunk/libavcodec/allcodecs.h Mon Jun 25 14:09:23 2007
@@ -57,6 +57,7 @@ extern AVCodec pgmyuv_encoder;
extern AVCodec png_encoder;
extern AVCodec ppm_encoder;
extern AVCodec roq_dpcm_encoder;
+extern AVCodec roq_encoder;
extern AVCodec rv10_encoder;
extern AVCodec rv20_encoder;
extern AVCodec sgi_encoder;
Modified: trunk/libavcodec/roqvideo.h
==============================================================================
--- trunk/libavcodec/roqvideo.h (original)
+++ trunk/libavcodec/roqvideo.h Mon Jun 25 14:09:23 2007
@@ -24,6 +24,7 @@
#include "avcodec.h"
#include "dsputil.h"
+#include "random.h"
typedef struct {
unsigned char y[4];
@@ -34,6 +35,10 @@ typedef struct {
int idx[4];
} roq_qcell;
+typedef struct {
+ int d[2];
+} motion_vect;
+
typedef struct RoqContext {
AVCodecContext *avctx;
@@ -41,6 +46,7 @@ typedef struct RoqContext {
AVFrame frames[2];
AVFrame *last_frame;
AVFrame *current_frame;
+ int first_frame;
int y_stride;
int c_stride;
@@ -49,7 +55,22 @@ typedef struct RoqContext {
unsigned char *buf;
int size;
+ int width, height;
+
+ /* Encoder only data */
+ AVRandomState randctx;
+ uint64_t lambda;
+ motion_vect *this_motion4;
+ motion_vect *last_motion4;
+
+ motion_vect *this_motion8;
+ motion_vect *last_motion8;
+
+ unsigned int framesSinceKeyframe;
+
+ AVFrame *frame_to_enc;
+ uint8_t *out_buf;
} RoqContext;
#define RoQ_INFO 0x1001
Added: trunk/libavcodec/roqvideoenc.c
==============================================================================
--- (empty file)
+++ trunk/libavcodec/roqvideoenc.c Mon Jun 25 14:09:23 2007
@@ -0,0 +1,1061 @@
+/*
+ * RoQ Video Encoder.
+ *
+ * Copyright (C) 2007 Vitor <vitor1001 at gmail.com>
+ * Copyright (C) 2004-2007 Eric Lasota
+ * Based on RoQ specs (C) 2001 Tim Ferguson
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+/**
+ * @file roqvideoenc.c
+ * Id RoQ encoder by Vitor. Based on the Switchblade3 library and the
+ * Switchblade3 FFmpeg glue by Eric Lasota.
+ */
+
+/*
+ * COSTS:
+ * Level 1:
+ * SKIP - 2 bits
+ * MOTION - 2 + 8 bits
+ * CODEBOOK - 2 + 8 bits
+ * SUBDIVIDE - 2 + combined subcel cost
+ *
+ * Level 2:
+ * SKIP - 2 bits
+ * MOTION - 2 + 8 bits
+ * CODEBOOK - 2 + 8 bits
+ * SUBDIVIDE - 2 + 4*8 bits
+ *
+ * Maximum cost: 138 bits per cel
+ *
+ * Proper evaluation requires LCD fraction comparison, which requires
+ * Squared Error (SE) loss * savings increase
+ *
+ * Maximum savings increase: 136 bits
+ * Maximum SE loss without overflow: 31580641
+ * Components in 8x8 supercel: 192
+ * Maximum SE precision per component: 164482
+ * >65025, so no truncation is needed (phew)
+ */
+
+#include <string.h>
+#include <unistd.h>
+
+#include "roqvideo.h"
+#include "bytestream.h"
+#include "elbg.h"
+
+#define CHROMA_BIAS 1
+
+/**
+ * Maximum number of generated 4x4 codebooks. Can't be 256 to workaround a
+ * Quake 3 bug.
+ */
+#define MAX_CBS_4x4 255
+
+#define MAX_CBS_2x2 256 ///< Maximum number of 2x2 codebooks.
+
+/* The cast is useful when multiplying it by INT_MAX */
+#define ROQ_LAMBDA_SCALE ((uint64_t) FF_LAMBDA_SCALE)
+
+/* Macroblock support functions */
+static void unpack_roq_cell(roq_cell *cell, uint8_t u[4*3])
+{
+ memcpy(u , cell->y, 4);
+ memset(u+4, cell->u, 4);
+ memset(u+8, cell->v, 4);
+}
+
+static void unpack_roq_qcell(uint8_t cb2[], roq_qcell *qcell, uint8_t u[4*4*3])
+{
+ int i,cp;
+ static const int offsets[4] = {0, 2, 8, 10};
+
+ for (cp=0; cp<3; cp++)
+ for (i=0; i<4; i++) {
+ u[4*4*cp + offsets[i] ] = cb2[qcell->idx[i]*2*2*3 + 4*cp ];
+ u[4*4*cp + offsets[i]+1] = cb2[qcell->idx[i]*2*2*3 + 4*cp+1];
+ u[4*4*cp + offsets[i]+4] = cb2[qcell->idx[i]*2*2*3 + 4*cp+2];
+ u[4*4*cp + offsets[i]+5] = cb2[qcell->idx[i]*2*2*3 + 4*cp+3];
+ }
+}
+
+
+static void enlarge_roq_mb4(uint8_t base[3*16], uint8_t u[3*64])
+{
+ int x,y,cp;
+
+ for(cp=0; cp<3; cp++)
+ for(y=0; y<8; y++)
+ for(x=0; x<8; x++)
+ *u++ = base[(y/2)*4 + (x/2) + 16*cp];
+}
+
+static inline int square(int x)
+{
+ return x*x;
+}
+
+static inline int eval_sse(uint8_t *a, uint8_t *b, int count)
+{
+ int diff=0;
+
+ while(count--)
+ diff += square(*b++ - *a++);
+
+ return diff;
+}
+
+// FIXME Could use DSPContext.sse, but it is not so speed critical (used
+// just for motion estimation).
+static int block_sse(uint8_t **buf1, uint8_t **buf2, int x1, int y1, int x2,
+ int y2, int stride, int size)
+{
+ int i, k;
+ int sse=0;
+
+ for (k=0; k<3; k++) {
+ int bias = (k ? CHROMA_BIAS : 4);
+ for (i=0; i<size; i++)
+ sse += bias*eval_sse(buf1[k] + (y1+i)*stride + x1,
+ buf2[k] + (y2+i)*stride + x2, size);
+ }
+
+ return sse;
+}
+
+static int eval_motion_dist(RoqContext *enc, int x, int y, motion_vect vect,
+ int size)
+{
+ int mx=vect.d[0];
+ int my=vect.d[1];
+
+ if (mx < -7 || mx > 7)
+ return INT_MAX;
+
+ if (my < -7 || my > 7)
+ return INT_MAX;
+
+ mx += x;
+ my += y;
+
+ if ((unsigned) mx > enc->width-size || (unsigned) my > enc->height-size)
+ return INT_MAX;
+
+ return block_sse(enc->frame_to_enc->data, enc->last_frame->data, x, y,
+ mx, my, enc->y_stride, size);
+}
+
+/**
+ * Returns distortion between two macroblocks
+ */
+static inline int squared_diff_macroblock(uint8_t a[], uint8_t b[], int size)
+{
+ int cp, sdiff=0;
+
+ for(cp=0;cp<3;cp++) {
+ int bias = (cp ? CHROMA_BIAS : 4);
+ sdiff += bias*eval_sse(a, b, size*size);
+ a += size*size;
+ b += size*size;
+ }
+
+ return sdiff;
+}
+
+typedef struct
+{
+ int eval_dist[4];
+ int best_bit_use;
+ int best_coding;
+
+ int subCels[4];
+ motion_vect motion;
+ int cbEntry;
+} subcel_evaluation_t;
+
+typedef struct
+{
+ int eval_dist[4];
+ int best_coding;
+
+ subcel_evaluation_t subCels[4];
+
+ motion_vect motion;
+ int cbEntry;
+
+ int sourceX, sourceY;
+} cel_evaluation_t;
+
+typedef struct
+{
+ int numCB4;
+ int numCB2;
+ int usedCB2[MAX_CBS_2x2];
+ int usedCB4[MAX_CBS_4x4];
+ uint8_t unpacked_cb2[MAX_CBS_2x2*2*2*3];
+ uint8_t unpacked_cb4[MAX_CBS_4x4*4*4*3];
+ uint8_t unpacked_cb4_enlarged[MAX_CBS_4x4*8*8*3];
+} roq_codebooks_t;
+
+/**
+ * Temporary vars
+ */
+typedef struct
+{
+ cel_evaluation_t *cel_evals;
+
+ int f2i4[MAX_CBS_4x4];
+ int i2f4[MAX_CBS_4x4];
+ int f2i2[MAX_CBS_2x2];
+ int i2f2[MAX_CBS_2x2];
+
+ int mainChunkSize;
+
+ int numCB4;
+ int numCB2;
+
+ roq_codebooks_t codebooks;
+
+ int *closest_cb2;
+ int used_option[4];
+} roq_tempdata_t;
+
+/**
+ * Initializes cel evaluators and sets their source coordinates
+ */
+static void create_cel_evals(RoqContext *enc, roq_tempdata_t *tempData)
+{
+ int n=0, x, y, i;
+
+ tempData->cel_evals = av_malloc(enc->width*enc->height/64 * sizeof(cel_evaluation_t));
+
+ /* Map to the ROQ quadtree order */
+ for (y=0; y<enc->height; y+=16)
+ for (x=0; x<enc->width; x+=16)
+ for(i=0; i<4; i++) {
+ tempData->cel_evals[n ].sourceX = x + (i&1)*8;
+ tempData->cel_evals[n++].sourceY = y + (i&2)*4;
+ }
+}
+
+/**
+ * Get macroblocks from parts of the image
+ */
+static void get_frame_mb(AVFrame *frame, int x, int y, uint8_t mb[], int dim)
+{
+ int i, j, cp;
+ int stride = frame->linesize[0];
+
+ for (cp=0; cp<3; cp++)
+ for (i=0; i<dim; i++)
+ for (j=0; j<dim; j++)
+ *mb++ = frame->data[cp][(y+i)*stride + x + j];
+}
+
+/**
+ * Find the codebook with the lowest distortion from an image
+ */
+static int index_mb(uint8_t cluster[], uint8_t cb[], int numCB,
+ int *outIndex, int dim)
+{
+ int i, lDiff = INT_MAX, pick=0;
+
+ /* Diff against the others */
+ for (i=0; i<numCB; i++) {
+ int diff = squared_diff_macroblock(cluster, cb + i*dim*dim*3, dim);
+ if (diff < lDiff) {
+ lDiff = diff;
+ pick = i;
+ }
+ }
+
+ *outIndex = pick;
+ return lDiff;
+}
+
+#define EVAL_MOTION(MOTION) \
+ do { \
+ diff = eval_motion_dist(enc, j, i, MOTION, blocksize); \
+ \
+ if (diff < lowestdiff) { \
+ lowestdiff = diff; \
+ bestpick = MOTION; \
+ } \
+ } while(0)
+
+static void motion_search(RoqContext *enc, int blocksize)
+{
+ static const motion_vect offsets[8] = {
+ {{ 0,-1}},
+ {{ 0, 1}},
+ {{-1, 0}},
+ {{ 1, 0}},
+ {{-1, 1}},
+ {{ 1,-1}},
+ {{-1,-1}},
+ {{ 1, 1}},
+ };
+
+ int diff, lowestdiff, oldbest;
+ int off[3];
+ motion_vect bestpick = {{0,0}};
+ int i, j, k, offset;
+
+ motion_vect *last_motion;
+ motion_vect *this_motion;
+ motion_vect vect, vect2;
+
+ int max=(enc->width/blocksize)*enc->height/blocksize;
+
+ if (blocksize == 4) {
+ last_motion = enc->last_motion4;
+ this_motion = enc->this_motion4;
+ } else {
+ last_motion = enc->last_motion8;
+ this_motion = enc->this_motion8;
+ }
+
+ for (i=0; i<enc->height; i+=blocksize)
+ for (j=0; j<enc->width; j+=blocksize) {
+ lowestdiff = eval_motion_dist(enc, j, i, (motion_vect) {{0,0}},
+ blocksize);
+ bestpick.d[0] = 0;
+ bestpick.d[1] = 0;
+
+ if (blocksize == 4)
+ EVAL_MOTION(enc->this_motion8[(i/8)*(enc->width/8) + j/8]);
+
+ offset = (i/blocksize)*enc->width/blocksize + j/blocksize;
+ if (offset < max && offset >= 0)
+ EVAL_MOTION(last_motion[offset]);
+
+ offset++;
+ if (offset < max && offset >= 0)
+ EVAL_MOTION(last_motion[offset]);
+
+ offset = (i/blocksize + 1)*enc->width/blocksize + j/blocksize;
+ if (offset < max && offset >= 0)
+ EVAL_MOTION(last_motion[offset]);
+
+ off[0]= (i/blocksize)*enc->width/blocksize + j/blocksize - 1;
+ off[1]= off[0] - enc->width/blocksize + 1;
+ off[2]= off[1] + 1;
+
+ if (i) {
+
+ for(k=0; k<2; k++)
+ vect.d[k]= mid_pred(this_motion[off[0]].d[k],
+ this_motion[off[1]].d[k],
+ this_motion[off[2]].d[k]);
+
+ EVAL_MOTION(vect);
+ for(k=0; k<3; k++)
+ EVAL_MOTION(this_motion[off[k]]);
+ } else if(j)
+ EVAL_MOTION(this_motion[off[0]]);
+
+ vect = bestpick;
+
+ oldbest = -1;
+ while (oldbest != lowestdiff) {
+ oldbest = lowestdiff;
+ for (k=0; k<8; k++) {
+ vect2 = vect;
+ vect2.d[0] += offsets[k].d[0];
+ vect2.d[1] += offsets[k].d[1];
+ EVAL_MOTION(vect2);
+ }
+ vect = bestpick;
+ }
+ offset = (i/blocksize)*enc->width/blocksize + j/blocksize;
+ this_motion[offset] = bestpick;
+ }
+}
+
+/**
+ * Gets distortion for all options available to a subcel
+ */
+static void gather_data_for_subcel(subcel_evaluation_t *subcel, int x,
+ int y, RoqContext *enc, roq_tempdata_t *tempData)
+{
+ uint8_t mb4[4*4*3];
+ uint8_t mb2[2*2*3];
+ int cluster_index;
+ int i, best_dist;
+
+ static const int bitsUsed[4] = {2, 10, 10, 34};
+
+ if (enc->framesSinceKeyframe >= 1) {
+ subcel->motion = enc->this_motion4[y*enc->width/16 + x/4];
+
+ subcel->eval_dist[RoQ_ID_FCC] =
+ eval_motion_dist(enc, x, y,
+ enc->this_motion4[y*enc->width/16 + x/4], 4);
+ } else
+ subcel->eval_dist[RoQ_ID_FCC] = INT_MAX;
+
+ if (enc->framesSinceKeyframe >= 2)
+ subcel->eval_dist[RoQ_ID_MOT] = block_sse(enc->frame_to_enc->data,
+ enc->current_frame->data, x,
+ y, x, y, enc->y_stride, 4);
+ else
+ subcel->eval_dist[RoQ_ID_MOT] = INT_MAX;
+
+ cluster_index = y*enc->width/16 + x/4;
+
+ get_frame_mb(enc->frame_to_enc, x, y, mb4, 4);
+
+ subcel->eval_dist[RoQ_ID_SLD] = index_mb(mb4,
+ tempData->codebooks.unpacked_cb4,
+ tempData->codebooks.numCB4,
+ &subcel->cbEntry, 4);
+
+ subcel->eval_dist[RoQ_ID_CCC] = 0;
+
+ for(i=0;i<4;i++) {
+ subcel->subCels[i] = tempData->closest_cb2[cluster_index*4+i];
+
+ get_frame_mb(enc->frame_to_enc, x+2*(i&1),
+ y+(i&2), mb2, 2);
+
+ subcel->eval_dist[RoQ_ID_CCC] +=
+ squared_diff_macroblock(tempData->codebooks.unpacked_cb2 + subcel->subCels[i]*2*2*3, mb2, 2);
+ }
+
+ best_dist = INT_MAX;
+ for (i=0; i<4; i++)
+ if (ROQ_LAMBDA_SCALE*subcel->eval_dist[i] + enc->lambda*bitsUsed[i] <
+ best_dist) {
+ subcel->best_coding = i;
+ subcel->best_bit_use = bitsUsed[i];
+ best_dist = ROQ_LAMBDA_SCALE*subcel->eval_dist[i] +
+ enc->lambda*bitsUsed[i];
+ }
+}
+
+/**
+ * Gets distortion for all options available to a cel
+ */
+static void gather_data_for_cel(cel_evaluation_t *cel, RoqContext *enc,
+ roq_tempdata_t *tempData)
+{
+ uint8_t mb8[8*8*3];
+ int index = cel->sourceY*enc->width/64 + cel->sourceX/8;
+ int i, j, best_dist, divide_bit_use;
+
+ int bitsUsed[4] = {2, 10, 10, 0};
+
+ if (enc->framesSinceKeyframe >= 1) {
+ cel->motion = enc->this_motion8[index];
+
+ cel->eval_dist[RoQ_ID_FCC] =
+ eval_motion_dist(enc, cel->sourceX, cel->sourceY,
+ enc->this_motion8[index], 8);
+ } else
+ cel->eval_dist[RoQ_ID_FCC] = INT_MAX;
+
+ if (enc->framesSinceKeyframe >= 2)
+ cel->eval_dist[RoQ_ID_MOT] = block_sse(enc->frame_to_enc->data,
+ enc->current_frame->data,
+ cel->sourceX, cel->sourceY,
+ cel->sourceX, cel->sourceY,
+ enc->y_stride, 8);
+ else
+ cel->eval_dist[RoQ_ID_MOT] = INT_MAX;
+
+ get_frame_mb(enc->frame_to_enc, cel->sourceX, cel->sourceY, mb8, 8);
+
+ cel->eval_dist[RoQ_ID_SLD] =
+ index_mb(mb8, tempData->codebooks.unpacked_cb4_enlarged,
+ tempData->codebooks.numCB4, &cel->cbEntry, 8);
+
+ gather_data_for_subcel(cel->subCels + 0, cel->sourceX+0, cel->sourceY+0, enc, tempData);
+ gather_data_for_subcel(cel->subCels + 1, cel->sourceX+4, cel->sourceY+0, enc, tempData);
+ gather_data_for_subcel(cel->subCels + 2, cel->sourceX+0, cel->sourceY+4, enc, tempData);
+ gather_data_for_subcel(cel->subCels + 3, cel->sourceX+4, cel->sourceY+4, enc, tempData);
+
+ cel->eval_dist[RoQ_ID_CCC] = 0;
+ divide_bit_use = 0;
+ for (i=0; i<4; i++) {
+ cel->eval_dist[RoQ_ID_CCC] +=
+ cel->subCels[i].eval_dist[cel->subCels[i].best_coding];
+ divide_bit_use += cel->subCels[i].best_bit_use;
+ }
+
+ best_dist = INT_MAX;
+ bitsUsed[3] = 2 + divide_bit_use;
+
+ for (i=0; i<4; i++)
+ if (ROQ_LAMBDA_SCALE*cel->eval_dist[i] + enc->lambda*bitsUsed[i] <
+ best_dist) {
+ cel->best_coding = i;
+ best_dist = ROQ_LAMBDA_SCALE*cel->eval_dist[i] +
+ enc->lambda*bitsUsed[i];
+ }
+
+ tempData->used_option[cel->best_coding]++;
+ tempData->mainChunkSize += bitsUsed[cel->best_coding];
+
+ if (cel->best_coding == RoQ_ID_SLD)
+ tempData->codebooks.usedCB4[cel->cbEntry]++;
+
+ if (cel->best_coding == RoQ_ID_CCC)
+ for (i=0; i<4; i++) {
+ if (cel->subCels[i].best_coding == RoQ_ID_SLD)
+ tempData->codebooks.usedCB4[cel->subCels[i].cbEntry]++;
+ else if (cel->subCels[i].best_coding == RoQ_ID_CCC)
+ for (j=0; j<4; j++)
+ tempData->codebooks.usedCB2[cel->subCels[i].subCels[j]]++;
+ }
+}
+
+static void remap_codebooks(RoqContext *enc, roq_tempdata_t *tempData)
+{
+ int i, j, idx=0;
+
+ /* Make remaps for the final codebook usage */
+ for (i=0; i<MAX_CBS_4x4; i++) {
+ if (tempData->codebooks.usedCB4[i]) {
+ tempData->i2f4[i] = idx;
+ tempData->f2i4[idx] = i;
+ for (j=0; j<4; j++)
+ tempData->codebooks.usedCB2[enc->cb4x4[i].idx[j]]++;
+ idx++;
+ }
+ }
+
+ tempData->numCB4 = idx;
+
+ idx = 0;
+ for (i=0; i<MAX_CBS_2x2; i++) {
+ if (tempData->codebooks.usedCB2[i]) {
+ tempData->i2f2[i] = idx;
+ tempData->f2i2[idx] = i;
+ idx++;
+ }
+ }
+ tempData->numCB2 = idx;
+
+}
+
+/**
+ * Write codebook chunk
+ */
+static void write_codebooks(RoqContext *enc, roq_tempdata_t *tempData)
+{
+ int i, j;
+ uint8_t **outp= &enc->out_buf;
+
+ if (tempData->numCB2) {
+ bytestream_put_le16(outp, RoQ_QUAD_CODEBOOK);
+ bytestream_put_le32(outp, tempData->numCB2*6 + tempData->numCB4*4);
+ bytestream_put_byte(outp, tempData->numCB4);
+ bytestream_put_byte(outp, tempData->numCB2);
+
+ for (i=0; i<tempData->numCB2; i++) {
+ bytestream_put_buffer(outp, enc->cb2x2[tempData->f2i2[i]].y, 4);
+ bytestream_put_byte(outp, enc->cb2x2[tempData->f2i2[i]].u);
+ bytestream_put_byte(outp, enc->cb2x2[tempData->f2i2[i]].v);
+ }
+
+ for (i=0; i<tempData->numCB4; i++)
+ for (j=0; j<4; j++)
+ bytestream_put_byte(outp, tempData->i2f2[enc->cb4x4[tempData->f2i4[i]].idx[j]]);
+
+ }
+}
+
+static inline uint8_t motion_arg(motion_vect mot)
+{
+ uint8_t ax = 8 - ((uint8_t) mot.d[0]);
+ uint8_t ay = 8 - ((uint8_t) mot.d[1]);
+ return ((ax&15)<<4) | (ay&15);
+}
+
+typedef struct
+{
+ int typeSpool;
+ int typeSpoolLength;
+ uint8_t argumentSpool[64];
+ uint8_t *args;
+ uint8_t **pout;
+} CodingSpool;
+
+/* NOTE: Typecodes must be spooled AFTER arguments!! */
+static void write_typecode(CodingSpool *s, uint8_t type)
+{
+ s->typeSpool |= ((type) & 3) << (14 - s->typeSpoolLength);
+ s->typeSpoolLength += 2;
+ if (s->typeSpoolLength == 16) {
+ bytestream_put_le16(s->pout, s->typeSpool);
+ bytestream_put_buffer(s->pout, s->argumentSpool,
+ s->args - s->argumentSpool);
+ s->typeSpoolLength = 0;
+ s->typeSpool = 0;
+ s->args = s->argumentSpool;
+ }
+}
+
+static void reconstruct_and_encode_image(RoqContext *enc, roq_tempdata_t *tempData, int w, int h, int numBlocks)
+{
+ int i, j, k;
+ int x, y;
+ int subX, subY;
+ int dist=0;
+
+ roq_qcell *qcell;
+ cel_evaluation_t *eval;
+
+ CodingSpool spool;
+
+ spool.typeSpool=0;
+ spool.typeSpoolLength=0;
+ spool.args = spool.argumentSpool;
+ spool.pout = &enc->out_buf;
+
+ if (tempData->used_option[RoQ_ID_CCC]%2)
+ tempData->mainChunkSize+=8; //FIXME
+
+ /* Write the video chunk header */
+ bytestream_put_le16(&enc->out_buf, RoQ_QUAD_VQ);
+ bytestream_put_le32(&enc->out_buf, tempData->mainChunkSize/8);
+ bytestream_put_byte(&enc->out_buf, 0x0);
+ bytestream_put_byte(&enc->out_buf, 0x0);
+
+ for (i=0; i<numBlocks; i++) {
+ eval = tempData->cel_evals + i;
+
+ x = eval->sourceX;
+ y = eval->sourceY;
+ dist += eval->eval_dist[eval->best_coding];
+
+ switch (eval->best_coding) {
+ case RoQ_ID_MOT:
+ write_typecode(&spool, RoQ_ID_MOT);
+ break;
+
+ case RoQ_ID_FCC:
+ bytestream_put_byte(&spool.args, motion_arg(eval->motion));
+
+ write_typecode(&spool, RoQ_ID_FCC);
+ ff_apply_motion_8x8(enc, x, y,
+ eval->motion.d[0], eval->motion.d[1]);
+ break;
+
+ case RoQ_ID_SLD:
+ bytestream_put_byte(&spool.args, tempData->i2f4[eval->cbEntry]);
+ write_typecode(&spool, RoQ_ID_SLD);
+
+ qcell = enc->cb4x4 + eval->cbEntry;
+ ff_apply_vector_4x4(enc, x , y , enc->cb2x2 + qcell->idx[0]);
+ ff_apply_vector_4x4(enc, x+4, y , enc->cb2x2 + qcell->idx[1]);
+ ff_apply_vector_4x4(enc, x , y+4, enc->cb2x2 + qcell->idx[2]);
+ ff_apply_vector_4x4(enc, x+4, y+4, enc->cb2x2 + qcell->idx[3]);
+ break;
+
+ case RoQ_ID_CCC:
+ write_typecode(&spool, RoQ_ID_CCC);
+
+ for (j=0; j<4; j++) {
+ subX = x + 4*(j&1);
+ subY = y + 2*(j&2);
+
+ switch(eval->subCels[j].best_coding) {
+ case RoQ_ID_MOT:
+ break;
+
+ case RoQ_ID_FCC:
+ bytestream_put_byte(&spool.args,
+ motion_arg(eval->subCels[j].motion));
+
+ ff_apply_motion_4x4(enc, subX, subY,
+ eval->subCels[j].motion.d[0],
+ eval->subCels[j].motion.d[1]);
+ break;
+
+ case RoQ_ID_SLD:
+ bytestream_put_byte(&spool.args,
+ tempData->i2f4[eval->subCels[j].cbEntry]);
+
+ qcell = enc->cb4x4 + eval->subCels[j].cbEntry;
+
+ ff_apply_vector_2x2(enc, subX , subY ,
+ enc->cb2x2 + qcell->idx[0]);
+ ff_apply_vector_2x2(enc, subX+2, subY ,
+ enc->cb2x2 + qcell->idx[1]);
+ ff_apply_vector_2x2(enc, subX , subY+2,
+ enc->cb2x2 + qcell->idx[2]);
+ ff_apply_vector_2x2(enc, subX+2, subY+2,
+ enc->cb2x2 + qcell->idx[3]);
+ break;
+
+ case RoQ_ID_CCC:
+ for (k=0; k<4; k++) {
+ int cb_idx = eval->subCels[j].subCels[k];
+ bytestream_put_byte(&spool.args,
+ tempData->i2f2[cb_idx]);
+
+ ff_apply_vector_2x2(enc, subX + 2*(k&1), subY + (k&2),
+ enc->cb2x2 + cb_idx);
+ }
+ break;
+ }
+ write_typecode(&spool, eval->subCels[j].best_coding);
+ }
+ break;
+ }
+ }
+
+ /* Flush the remainder of the argument/type spool */
+ while (spool.typeSpoolLength)
+ write_typecode(&spool, 0x0);
+
+#if 0
+ uint8_t *fdata[3] = {enc->frame_to_enc->data[0],
+ enc->frame_to_enc->data[1],
+ enc->frame_to_enc->data[2]};
+ uint8_t *cdata[3] = {enc->current_frame->data[0],
+ enc->current_frame->data[1],
+ enc->current_frame->data[2]};
+ av_log(enc->avctx, AV_LOG_ERROR, "Expected distortion: %i Actual: %i\n",
+ dist,
+ block_sse(fdata, cdata, 0, 0, 0, 0,
+ enc->y_stride, enc->width)); //WARNING: Square dimensions implied...
+#endif
+}
+
+
+/**
+ * Create a single YUV cell from a 2x2 section of the image
+ */
+static inline void frame_block_to_cell(uint8_t *block, uint8_t **data,
+ int top, int left, int *stride)
+{
+ int i, j, u=0, v=0;
+
+ for (i=0; i<2; i++)
+ for (j=0; j<2; j++) {
+ int x = (top+i)*stride[0] + left + j;
+ *block++ = data[0][x];
+ u += data[1][x];
+ v += data[2][x];
+ }
+
+ *block++ = (u+2)/4;
+ *block++ = (v+2)/4;
+}
+
+/**
+ * Creates YUV clusters for the entire image
+ */
+static void create_clusters(AVFrame *frame, int w, int h, uint8_t *yuvClusters)
+{
+ int i, j, k, l;
+
+ for (i=0; i<h; i+=4)
+ for (j=0; j<w; j+=4) {
+ for (k=0; k < 2; k++)
+ for (l=0; l < 2; l++)
+ frame_block_to_cell(yuvClusters + (l + 2*k)*6, frame->data,
+ i+2*k, j+2*l, frame->linesize);
+ yuvClusters += 24;
+ }
+}
+
+static void generate_codebook(RoqContext *enc, roq_tempdata_t *tempdata,
+ int *points, int inputCount, roq_cell *results,
+ int size, int cbsize)
+{
+ int i, j, k;
+ int c_size = size*size/4;
+ int *buf = points;
+ int *codebook = av_malloc(6*c_size*cbsize*sizeof(int));
+ int *closest_cb;
+
+ if (size == 4)
+ closest_cb = av_malloc(6*c_size*inputCount*sizeof(int));
+ else
+ closest_cb = tempdata->closest_cb2;
+
+ ff_init_elbg(points, 6*c_size, inputCount, codebook, cbsize, 1, closest_cb, &enc->randctx);
+ ff_do_elbg(points, 6*c_size, inputCount, codebook, cbsize, 1, closest_cb, &enc->randctx);
+
+ if (size == 4)
+ av_free(closest_cb);
+
+ buf = codebook;
+ for (i=0; i<cbsize; i++)
+ for (k=0; k<c_size; k++) {
+ for(j=0; j<4; j++)
+ results->y[j] = *buf++;
+
+ results->u = (*buf++ + CHROMA_BIAS/2)/CHROMA_BIAS;
+ results->v = (*buf++ + CHROMA_BIAS/2)/CHROMA_BIAS;
+ results++;
+ }
+
+ av_free(codebook);
+}
+
+static void generate_new_codebooks(RoqContext *enc, roq_tempdata_t *tempData)
+{
+ int i,j;
+ roq_codebooks_t *codebooks = &tempData->codebooks;
+ int max = enc->width*enc->height/16;
+ uint8_t mb2[3*4];
+ roq_cell *results4 = av_malloc(sizeof(roq_cell)*MAX_CBS_4x4*4);
+ uint8_t *yuvClusters=av_malloc(sizeof(int)*max*6*4);
+ int *points = av_malloc(max*6*4*sizeof(int));
+ int bias;
+
+ /* Subsample YUV data */
+ create_clusters(enc->frame_to_enc, enc->width, enc->height, yuvClusters);
+
+ /* Cast to integer and apply chroma bias */
+ for (i=0; i<max*24; i++) {
+ bias = ((i%6)<4) ? 1 : CHROMA_BIAS;
+ points[i] = bias*yuvClusters[i];
+ }
+
+ /* Create 4x4 codebooks */
+ generate_codebook(enc, tempData, points, max, results4, 4, MAX_CBS_4x4);
+
+ codebooks->numCB4 = MAX_CBS_4x4;
+
+ tempData->closest_cb2 = av_malloc(max*4*sizeof(int));
+
+ /* Create 2x2 codebooks */
+ generate_codebook(enc, tempData, points, max*4, enc->cb2x2, 2, MAX_CBS_2x2);
+
+ codebooks->numCB2 = MAX_CBS_2x2;
+
+ /* Unpack 2x2 codebook clusters */
+ for (i=0; i<codebooks->numCB2; i++)
+ unpack_roq_cell(enc->cb2x2 + i, codebooks->unpacked_cb2 + i*2*2*3);
+
+ /* Index all 4x4 entries to the 2x2 entries, unpack, and enlarge */
+ for (i=0; i<codebooks->numCB4; i++) {
+ for (j=0; j<4; j++) {
+ unpack_roq_cell(&results4[4*i + j], mb2);
+ index_mb(mb2, codebooks->unpacked_cb2, codebooks->numCB2,
+ &enc->cb4x4[i].idx[j], 2);
+ }
+ unpack_roq_qcell(codebooks->unpacked_cb2, enc->cb4x4 + i,
+ codebooks->unpacked_cb4 + i*4*4*3);
+ enlarge_roq_mb4(codebooks->unpacked_cb4 + i*4*4*3,
+ codebooks->unpacked_cb4_enlarged + i*8*8*3);
+ }
+
+ av_free(yuvClusters);
+ av_free(points);
+ av_free(results4);
+}
+
+static void roq_encode_video(RoqContext *enc)
+{
+ roq_tempdata_t tempData;
+ int i;
+
+ memset(&tempData, 0, sizeof(tempData));
+
+ create_cel_evals(enc, &tempData);
+
+ generate_new_codebooks(enc, &tempData);
+
+ if (enc->framesSinceKeyframe >= 1) {
+ motion_search(enc, 8);
+ motion_search(enc, 4);
+ }
+
+ retry_encode:
+ for (i=0; i<enc->width*enc->height/64; i++)
+ gather_data_for_cel(tempData.cel_evals + i, enc, &tempData);
+
+ /* Quake 3 can't handle chunks bigger than 65536 bytes */
+ if (tempData.mainChunkSize/8 > 65536) {
+ enc->lambda *= .8;
+ goto retry_encode;
+ }
+
+ remap_codebooks(enc, &tempData);
+
+ write_codebooks(enc, &tempData);
+
+ reconstruct_and_encode_image(enc, &tempData, enc->width, enc->height,
+ enc->width*enc->height/64);
+
+ /* Rotate frame history */
+ FFSWAP(AVFrame *, enc->current_frame, enc->last_frame);
+ FFSWAP(motion_vect *, enc->last_motion4, enc->this_motion4);
+ FFSWAP(motion_vect *, enc->last_motion8, enc->this_motion8);
+
+ av_free(tempData.cel_evals);
+ av_free(tempData.closest_cb2);
+
+ enc->framesSinceKeyframe++;
+}
+
+static int roq_encode_init(AVCodecContext *avctx)
+{
+ RoqContext *enc = avctx->priv_data;
+
+ av_init_random(1, &enc->randctx);
+
+ enc->framesSinceKeyframe = 0;
+ if ((avctx->width & 0xf) || (avctx->height & 0xf)) {
+ av_log(avctx, AV_LOG_ERROR, "Dimensions must be divisible by 16\n");
+ return -1;
+ }
+
+ if (((avctx->width)&(avctx->width-1))||((avctx->height)&(avctx->height-1)))
+ av_log(avctx, AV_LOG_ERROR, "Warning: dimensions not power of two\n");
+
+ if (avcodec_check_dimensions(avctx, avctx->width, avctx->height)) {
+ av_log(avctx, AV_LOG_ERROR, "Invalid dimensions (%dx%d)\n",
+ avctx->width, avctx->height);
+ return -1;
+ }
+
+ enc->width = avctx->width;
+ enc->height = avctx->height;
+
+ enc->framesSinceKeyframe = 0;
+ enc->first_frame = 1;
+
+ enc->last_frame = &enc->frames[0];
+ enc->current_frame = &enc->frames[1];
+
+ enc->this_motion4 =
+ av_mallocz((enc->width*enc->height/16)*sizeof(motion_vect));
+
+ enc->last_motion4 =
+ av_malloc ((enc->width*enc->height/16)*sizeof(motion_vect));
+
+ enc->this_motion8 =
+ av_mallocz((enc->width*enc->height/64)*sizeof(motion_vect));
+
+ enc->last_motion8 =
+ av_malloc ((enc->width*enc->height/64)*sizeof(motion_vect));
+
+ return 0;
+}
+
+static void roq_write_video_info_chunk(RoqContext *enc)
+{
+ /* ROQ info chunk */
+ bytestream_put_le16(&enc->out_buf, RoQ_INFO);
+
+ /* Size: 8 bytes */
+ bytestream_put_le32(&enc->out_buf, 8);
+
+ /* Unused argument */
+ bytestream_put_byte(&enc->out_buf, 0x00);
+ bytestream_put_byte(&enc->out_buf, 0x00);
+
+ /* Width */
+ bytestream_put_le16(&enc->out_buf, enc->width);
+
+ /* Height */
+ bytestream_put_le16(&enc->out_buf, enc->height);
+
+ /* Unused in Quake 3, mimics the output of the real encoder */
+ bytestream_put_byte(&enc->out_buf, 0x08);
+ bytestream_put_byte(&enc->out_buf, 0x00);
+ bytestream_put_byte(&enc->out_buf, 0x04);
+ bytestream_put_byte(&enc->out_buf, 0x00);
+}
+
+static int roq_encode_frame(AVCodecContext *avctx, unsigned char *buf, int buf_size, void *data)
+{
+ RoqContext *enc = avctx->priv_data;
+ AVFrame *frame= data;
+ uint8_t *buf_start = buf;
+
+ enc->out_buf = buf;
+ enc->y_stride = frame->linesize[0];
+ enc->c_stride = frame->linesize[1];
+ enc->avctx = avctx;
+
+ enc->frame_to_enc = frame;
+
+ if (frame->quality)
+ enc->lambda = frame->quality - 1;
+ else
+ enc->lambda = 2*ROQ_LAMBDA_SCALE;
+
+ /* 138 bits max per 8x8 block +
+ * 256 codebooks*(6 bytes 2x2 + 4 bytes 4x4) + 8 bytes frame header */
+ if (((enc->width*enc->height/64)*138+7)/8 + 256*(6+4) + 8 > buf_size) {
+ av_log(avctx, AV_LOG_ERROR, " RoQ: Output buffer too small!\n");
+ return -1;
+ }
+
+ /* Check for I frame */
+ if (enc->framesSinceKeyframe == avctx->gop_size)
+ enc->framesSinceKeyframe = 0;
+
+ if (enc->first_frame) {
+ /* Alloc memory for the reconstruction data (we must know the stride
+ for that) */
+ if (avctx->get_buffer(avctx, enc->current_frame) ||
+ avctx->get_buffer(avctx, enc->last_frame)) {
+ av_log(avctx, AV_LOG_ERROR, " RoQ: get_buffer() failed\n");
+ return -1;
+ }
+
+ /* Before the first video frame, write a "video info" chunk */
+ roq_write_video_info_chunk(enc);
+
+ enc->first_frame = 0;
+ }
+
+ /* Encode the actual frame */
+ roq_encode_video(enc);
+
+ return enc->out_buf - buf_start;
+}
+
+static int roq_encode_end(AVCodecContext *avctx)
+{
+ RoqContext *enc = avctx->priv_data;
+
+ avctx->release_buffer(avctx, enc->last_frame);
+ avctx->release_buffer(avctx, enc->current_frame);
+
+ av_free(enc->this_motion4);
+ av_free(enc->last_motion4);
+ av_free(enc->this_motion8);
+ av_free(enc->last_motion8);
+
+ return 0;
+}
+
+AVCodec roq_encoder =
+{
+ "roqvideo",
+ CODEC_TYPE_VIDEO,
+ CODEC_ID_ROQ,
+ sizeof(RoqContext),
+ roq_encode_init,
+ roq_encode_frame,
+ roq_encode_end,
+ .supported_framerates = (AVRational[]){{30,1}, {0,0}},
+ .pix_fmts = (enum PixelFormat[]){PIX_FMT_YUV444P, -1},
+};
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