diff options
Diffstat (limited to 'ffmpeg/libavcodec/roqvideoenc.c')
| -rw-r--r-- | ffmpeg/libavcodec/roqvideoenc.c | 1088 |
1 files changed, 0 insertions, 1088 deletions
diff --git a/ffmpeg/libavcodec/roqvideoenc.c b/ffmpeg/libavcodec/roqvideoenc.c deleted file mode 100644 index 37bd8d5..0000000 --- a/ffmpeg/libavcodec/roqvideoenc.c +++ /dev/null @@ -1,1088 +0,0 @@ -/* - * RoQ Video Encoder. - * - * Copyright (C) 2007 Vitor Sessak <vitor1001@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 - * 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 "libavutil/attributes.h" -#include "roqvideo.h" -#include "bytestream.h" -#include "elbg.h" -#include "internal.h" -#include "mathops.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(const uint8_t *a, const 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 * const *buf1, uint8_t * const *buf2, int x1, int y1, - int x2, int y2, const int *stride1, const int *stride2, 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)*stride1[k] + x1, - buf2[k] + (y2+i)*stride2[k] + 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->frame_to_enc->linesize, enc->last_frame->linesize, - size); -} - -/** - * @return 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; -} SubcelEvaluation; - -typedef struct -{ - int eval_dist[4]; - int best_coding; - - SubcelEvaluation subCels[4]; - - motion_vect motion; - int cbEntry; - - int sourceX, sourceY; -} CelEvaluation; - -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]; -} RoqCodebooks; - -/** - * Temporary vars - */ -typedef struct RoqTempData -{ - CelEvaluation *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; - - RoqCodebooks codebooks; - - int *closest_cb2; - int used_option[4]; -} RoqTempdata; - -/** - * Initialize cel evaluators and set their source coordinates - */ -static void create_cel_evals(RoqContext *enc, RoqTempdata *tempData) -{ - int n=0, x, y, i; - - tempData->cel_evals = av_malloc(enc->width*enc->height/64 * sizeof(CelEvaluation)); - - /* 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(const AVFrame *frame, int x, int y, uint8_t mb[], int dim) -{ - int i, j, cp; - - for (cp=0; cp<3; cp++) { - int stride = frame->linesize[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; - } -} - -/** - * Get distortion for all options available to a subcel - */ -static void gather_data_for_subcel(SubcelEvaluation *subcel, int x, - int y, RoqContext *enc, RoqTempdata *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->frame_to_enc->linesize, - enc->current_frame->linesize, - 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]; - } -} - -/** - * Get distortion for all options available to a cel - */ -static void gather_data_for_cel(CelEvaluation *cel, RoqContext *enc, - RoqTempdata *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->frame_to_enc->linesize, - enc->current_frame->linesize,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, RoqTempdata *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, RoqTempdata *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, RoqTempdata *tempData, int w, int h, int numBlocks) -{ - int i, j, k; - int x, y; - int subX, subY; - int dist=0; - - roq_qcell *qcell; - CelEvaluation *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->frame_to_enc->linesize, - enc->current_frame->linesize, - 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 * const *data, - int top, int left, const 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]; - x = (top+i)*stride[1] + left + j; - u += data[1][x]; - v += data[2][x]; - } - - *block++ = (u+2)/4; - *block++ = (v+2)/4; -} - -/** - * Create YUV clusters for the entire image - */ -static void create_clusters(const 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, RoqTempdata *tempdata, - int *points, int inputCount, roq_cell *results, - int size, int cbsize) -{ - int i, j, k; - int c_size = size*size/4; - int *buf; - 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; - - avpriv_init_elbg(points, 6*c_size, inputCount, codebook, cbsize, 1, closest_cb, &enc->randctx); - avpriv_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, RoqTempdata *tempData) -{ - int i,j; - RoqCodebooks *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) -{ - RoqTempdata *tempData = enc->tmpData; - 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 65535 bytes */ - if (tempData->mainChunkSize/8 > 65535) { - av_log(enc->avctx, AV_LOG_ERROR, - "Warning, generated a frame too big (%d > 65535), " - "try using a smaller qscale value.\n", - tempData->mainChunkSize/8); - enc->lambda *= 1.5; - tempData->mainChunkSize = 0; - memset(tempData->used_option, 0, sizeof(tempData->used_option)); - memset(tempData->codebooks.usedCB4, 0, - sizeof(tempData->codebooks.usedCB4)); - memset(tempData->codebooks.usedCB2, 0, - sizeof(tempData->codebooks.usedCB2)); - - 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); - - enc->avctx->coded_frame = enc->current_frame; - - /* 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 av_cold int roq_encode_end(AVCodecContext *avctx) -{ - RoqContext *enc = avctx->priv_data; - - av_frame_free(&enc->current_frame); - av_frame_free(&enc->last_frame); - - av_free(enc->tmpData); - av_free(enc->this_motion4); - av_free(enc->last_motion4); - av_free(enc->this_motion8); - av_free(enc->last_motion8); - - return 0; -} - -static av_cold int roq_encode_init(AVCodecContext *avctx) -{ - RoqContext *enc = avctx->priv_data; - - av_lfg_init(&enc->randctx, 1); - - 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"); - - enc->width = avctx->width; - enc->height = avctx->height; - - enc->framesSinceKeyframe = 0; - enc->first_frame = 1; - - enc->last_frame = av_frame_alloc(); - enc->current_frame = av_frame_alloc(); - if (!enc->last_frame || !enc->current_frame) { - roq_encode_end(avctx); - return AVERROR(ENOMEM); - } - - enc->tmpData = av_malloc(sizeof(RoqTempdata)); - - 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, AVPacket *pkt, - const AVFrame *frame, int *got_packet) -{ - RoqContext *enc = avctx->priv_data; - int size, ret; - - 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 */ - size = ((enc->width * enc->height / 64) * 138 + 7) / 8 + 256 * (6 + 4) + 8; - if ((ret = ff_alloc_packet2(avctx, pkt, size)) < 0) - return ret; - enc->out_buf = pkt->data; - - /* 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 ((ret = ff_get_buffer(avctx, enc->current_frame, 0)) < 0 || - (ret = ff_get_buffer(avctx, enc->last_frame, 0)) < 0) - return ret; - - /* 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); - - pkt->size = enc->out_buf - pkt->data; - if (enc->framesSinceKeyframe == 1) - pkt->flags |= AV_PKT_FLAG_KEY; - *got_packet = 1; - - return 0; -} - -AVCodec ff_roq_encoder = { - .name = "roqvideo", - .long_name = NULL_IF_CONFIG_SMALL("id RoQ video"), - .type = AVMEDIA_TYPE_VIDEO, - .id = AV_CODEC_ID_ROQ, - .priv_data_size = sizeof(RoqContext), - .init = roq_encode_init, - .encode2 = roq_encode_frame, - .close = roq_encode_end, - .supported_framerates = (const AVRational[]){ {30,1}, {0,0} }, - .pix_fmts = (const enum AVPixelFormat[]){ AV_PIX_FMT_YUV444P, - AV_PIX_FMT_NONE }, -}; 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