From 03e3e765447a2a0f8f6563ae6e0cd8ed592a8dfe Mon Sep 17 00:00:00 2001 From: Vitor Sessak Date: Mon, 25 Jun 2007 12:09:23 +0000 Subject: [PATCH] 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 Originally committed as revision 9420 to svn://svn.ffmpeg.org/ffmpeg/trunk --- Changelog | 1 + doc/ffmpeg-doc.texi | 2 +- libavcodec/Makefile | 1 + libavcodec/allcodecs.c | 2 +- libavcodec/allcodecs.h | 1 + libavcodec/roqvideo.h | 21 + libavcodec/roqvideoenc.c | 1061 ++++++++++++++++++++++++++++++++++++++ 7 files changed, 1087 insertions(+), 2 deletions(-) create mode 100644 libavcodec/roqvideoenc.c diff --git a/Changelog b/Changelog index 87fba9d828..1a55abed02 100644 --- a/Changelog +++ b/Changelog @@ -87,6 +87,7 @@ version - extern C declarations for C++ removed from headers - sws_flags command line option - codebook generator +- RoQ video encoder version 0.4.9-pre1: diff --git a/doc/ffmpeg-doc.texi b/doc/ffmpeg-doc.texi index 983c973fe2..9fa7668ca3 100644 --- a/doc/ffmpeg-doc.texi +++ b/doc/ffmpeg-doc.texi @@ -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 -@item Id RoQ @tab @tab X @tab Used in Quake III, Jedi Knight 2, other computer games. +@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 ' diff --git a/libavcodec/Makefile b/libavcodec/Makefile index 44e9e82f76..7ab4eb29a7 100644 --- a/libavcodec/Makefile +++ b/libavcodec/Makefile @@ -135,6 +135,7 @@ OBJS-$(CONFIG_QTRLE_DECODER) += qtrle.o OBJS-$(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 diff --git a/libavcodec/allcodecs.c b/libavcodec/allcodecs.c index 250561afb2..7805fa505a 100644 --- a/libavcodec/allcodecs.c +++ b/libavcodec/allcodecs.c @@ -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); diff --git a/libavcodec/allcodecs.h b/libavcodec/allcodecs.h index d9575a658d..606d17afa1 100644 --- a/libavcodec/allcodecs.h +++ b/libavcodec/allcodecs.h @@ -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; diff --git a/libavcodec/roqvideo.h b/libavcodec/roqvideo.h index 41c4ed1795..b405dfdf91 100644 --- a/libavcodec/roqvideo.h +++ b/libavcodec/roqvideo.h @@ -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 diff --git a/libavcodec/roqvideoenc.c b/libavcodec/roqvideoenc.c new file mode 100644 index 0000000000..58371824f7 --- /dev/null +++ b/libavcodec/roqvideoenc.c @@ -0,0 +1,1061 @@ +/* + * RoQ Video Encoder. + * + * Copyright (C) 2007 Vitor + * 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 +#include + +#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 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; yheight; y+=16) + for (x=0; xwidth; 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; idata[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; iwidth/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; iheight; i+=blocksize) + for (j=0; jwidth; 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; icodebooks.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; icodebooks.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; inumCB2; 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; inumCB4; 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; icel_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; idata, + 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; iy[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; inumCB4 = 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; inumCB2; 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; inumCB4; 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; iwidth*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}, +};