diff options
Diffstat (limited to 'libavcodec/snow.c')
| -rw-r--r-- | libavcodec/snow.c | 692 |
1 files changed, 692 insertions, 0 deletions
diff --git a/libavcodec/snow.c b/libavcodec/snow.c new file mode 100644 index 0000000000..de19687a97 --- /dev/null +++ b/libavcodec/snow.c @@ -0,0 +1,692 @@ +/* + * Copyright (C) 2004 Michael Niedermayer <michaelni@gmx.at> + * + * 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 "libavutil/intmath.h" +#include "libavutil/log.h" +#include "libavutil/opt.h" +#include "avcodec.h" +#include "dsputil.h" +#include "snow_dwt.h" +#include "internal.h" +#include "snow.h" +#include "snowdata.h" + +#include "rangecoder.h" +#include "mathops.h" +#include "h263.h" + + +void ff_snow_inner_add_yblock(const uint8_t *obmc, const int obmc_stride, uint8_t * * block, int b_w, int b_h, + int src_x, int src_y, int src_stride, slice_buffer * sb, int add, uint8_t * dst8){ + int y, x; + IDWTELEM * dst; + for(y=0; y<b_h; y++){ + //FIXME ugly misuse of obmc_stride + const uint8_t *obmc1= obmc + y*obmc_stride; + const uint8_t *obmc2= obmc1+ (obmc_stride>>1); + const uint8_t *obmc3= obmc1+ obmc_stride*(obmc_stride>>1); + const uint8_t *obmc4= obmc3+ (obmc_stride>>1); + dst = slice_buffer_get_line(sb, src_y + y); + for(x=0; x<b_w; x++){ + int v= obmc1[x] * block[3][x + y*src_stride] + +obmc2[x] * block[2][x + y*src_stride] + +obmc3[x] * block[1][x + y*src_stride] + +obmc4[x] * block[0][x + y*src_stride]; + + v <<= 8 - LOG2_OBMC_MAX; + if(FRAC_BITS != 8){ + v >>= 8 - FRAC_BITS; + } + if(add){ + v += dst[x + src_x]; + v = (v + (1<<(FRAC_BITS-1))) >> FRAC_BITS; + if(v&(~255)) v= ~(v>>31); + dst8[x + y*src_stride] = v; + }else{ + dst[x + src_x] -= v; + } + } + } +} + +void ff_snow_reset_contexts(SnowContext *s){ //FIXME better initial contexts + int plane_index, level, orientation; + + for(plane_index=0; plane_index<3; plane_index++){ + for(level=0; level<MAX_DECOMPOSITIONS; level++){ + for(orientation=level ? 1:0; orientation<4; orientation++){ + memset(s->plane[plane_index].band[level][orientation].state, MID_STATE, sizeof(s->plane[plane_index].band[level][orientation].state)); + } + } + } + memset(s->header_state, MID_STATE, sizeof(s->header_state)); + memset(s->block_state, MID_STATE, sizeof(s->block_state)); +} + +int ff_snow_alloc_blocks(SnowContext *s){ + int w= -((-s->avctx->width )>>LOG2_MB_SIZE); + int h= -((-s->avctx->height)>>LOG2_MB_SIZE); + + s->b_width = w; + s->b_height= h; + + av_free(s->block); + s->block= av_mallocz(w * h * sizeof(BlockNode) << (s->block_max_depth*2)); + return 0; +} + +static void init_qexp(void){ + int i; + double v=128; + + for(i=0; i<QROOT; i++){ + ff_qexp[i]= lrintf(v); + v *= pow(2, 1.0 / QROOT); + } +} +static void mc_block(Plane *p, uint8_t *dst, const uint8_t *src, int stride, int b_w, int b_h, int dx, int dy){ + static const uint8_t weight[64]={ + 8,7,6,5,4,3,2,1, + 7,7,0,0,0,0,0,1, + 6,0,6,0,0,0,2,0, + 5,0,0,5,0,3,0,0, + 4,0,0,0,4,0,0,0, + 3,0,0,5,0,3,0,0, + 2,0,6,0,0,0,2,0, + 1,7,0,0,0,0,0,1, + }; + + static const uint8_t brane[256]={ + 0x00,0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x11,0x12,0x12,0x12,0x12,0x12,0x12,0x12, + 0x04,0x05,0xcc,0xcc,0xcc,0xcc,0xcc,0x41,0x15,0x16,0xcc,0xcc,0xcc,0xcc,0xcc,0x52, + 0x04,0xcc,0x05,0xcc,0xcc,0xcc,0x41,0xcc,0x15,0xcc,0x16,0xcc,0xcc,0xcc,0x52,0xcc, + 0x04,0xcc,0xcc,0x05,0xcc,0x41,0xcc,0xcc,0x15,0xcc,0xcc,0x16,0xcc,0x52,0xcc,0xcc, + 0x04,0xcc,0xcc,0xcc,0x41,0xcc,0xcc,0xcc,0x15,0xcc,0xcc,0xcc,0x16,0xcc,0xcc,0xcc, + 0x04,0xcc,0xcc,0x41,0xcc,0x05,0xcc,0xcc,0x15,0xcc,0xcc,0x52,0xcc,0x16,0xcc,0xcc, + 0x04,0xcc,0x41,0xcc,0xcc,0xcc,0x05,0xcc,0x15,0xcc,0x52,0xcc,0xcc,0xcc,0x16,0xcc, + 0x04,0x41,0xcc,0xcc,0xcc,0xcc,0xcc,0x05,0x15,0x52,0xcc,0xcc,0xcc,0xcc,0xcc,0x16, + 0x44,0x45,0x45,0x45,0x45,0x45,0x45,0x45,0x55,0x56,0x56,0x56,0x56,0x56,0x56,0x56, + 0x48,0x49,0xcc,0xcc,0xcc,0xcc,0xcc,0x85,0x59,0x5A,0xcc,0xcc,0xcc,0xcc,0xcc,0x96, + 0x48,0xcc,0x49,0xcc,0xcc,0xcc,0x85,0xcc,0x59,0xcc,0x5A,0xcc,0xcc,0xcc,0x96,0xcc, + 0x48,0xcc,0xcc,0x49,0xcc,0x85,0xcc,0xcc,0x59,0xcc,0xcc,0x5A,0xcc,0x96,0xcc,0xcc, + 0x48,0xcc,0xcc,0xcc,0x49,0xcc,0xcc,0xcc,0x59,0xcc,0xcc,0xcc,0x96,0xcc,0xcc,0xcc, + 0x48,0xcc,0xcc,0x85,0xcc,0x49,0xcc,0xcc,0x59,0xcc,0xcc,0x96,0xcc,0x5A,0xcc,0xcc, + 0x48,0xcc,0x85,0xcc,0xcc,0xcc,0x49,0xcc,0x59,0xcc,0x96,0xcc,0xcc,0xcc,0x5A,0xcc, + 0x48,0x85,0xcc,0xcc,0xcc,0xcc,0xcc,0x49,0x59,0x96,0xcc,0xcc,0xcc,0xcc,0xcc,0x5A, + }; + + static const uint8_t needs[16]={ + 0,1,0,0, + 2,4,2,0, + 0,1,0,0, + 15 + }; + + int x, y, b, r, l; + int16_t tmpIt [64*(32+HTAPS_MAX)]; + uint8_t tmp2t[3][64*(32+HTAPS_MAX)]; + int16_t *tmpI= tmpIt; + uint8_t *tmp2= tmp2t[0]; + const uint8_t *hpel[11]; + av_assert2(dx<16 && dy<16); + r= brane[dx + 16*dy]&15; + l= brane[dx + 16*dy]>>4; + + b= needs[l] | needs[r]; + if(p && !p->diag_mc) + b= 15; + + if(b&5){ + for(y=0; y < b_h+HTAPS_MAX-1; y++){ + for(x=0; x < b_w; x++){ + int a_1=src[x + HTAPS_MAX/2-4]; + int a0= src[x + HTAPS_MAX/2-3]; + int a1= src[x + HTAPS_MAX/2-2]; + int a2= src[x + HTAPS_MAX/2-1]; + int a3= src[x + HTAPS_MAX/2+0]; + int a4= src[x + HTAPS_MAX/2+1]; + int a5= src[x + HTAPS_MAX/2+2]; + int a6= src[x + HTAPS_MAX/2+3]; + int am=0; + if(!p || p->fast_mc){ + am= 20*(a2+a3) - 5*(a1+a4) + (a0+a5); + tmpI[x]= am; + am= (am+16)>>5; + }else{ + am= p->hcoeff[0]*(a2+a3) + p->hcoeff[1]*(a1+a4) + p->hcoeff[2]*(a0+a5) + p->hcoeff[3]*(a_1+a6); + tmpI[x]= am; + am= (am+32)>>6; + } + + if(am&(~255)) am= ~(am>>31); + tmp2[x]= am; + } + tmpI+= 64; + tmp2+= 64; + src += stride; + } + src -= stride*y; + } + src += HTAPS_MAX/2 - 1; + tmp2= tmp2t[1]; + + if(b&2){ + for(y=0; y < b_h; y++){ + for(x=0; x < b_w+1; x++){ + int a_1=src[x + (HTAPS_MAX/2-4)*stride]; + int a0= src[x + (HTAPS_MAX/2-3)*stride]; + int a1= src[x + (HTAPS_MAX/2-2)*stride]; + int a2= src[x + (HTAPS_MAX/2-1)*stride]; + int a3= src[x + (HTAPS_MAX/2+0)*stride]; + int a4= src[x + (HTAPS_MAX/2+1)*stride]; + int a5= src[x + (HTAPS_MAX/2+2)*stride]; + int a6= src[x + (HTAPS_MAX/2+3)*stride]; + int am=0; + if(!p || p->fast_mc) + am= (20*(a2+a3) - 5*(a1+a4) + (a0+a5) + 16)>>5; + else + am= (p->hcoeff[0]*(a2+a3) + p->hcoeff[1]*(a1+a4) + p->hcoeff[2]*(a0+a5) + p->hcoeff[3]*(a_1+a6) + 32)>>6; + + if(am&(~255)) am= ~(am>>31); + tmp2[x]= am; + } + src += stride; + tmp2+= 64; + } + src -= stride*y; + } + src += stride*(HTAPS_MAX/2 - 1); + tmp2= tmp2t[2]; + tmpI= tmpIt; + if(b&4){ + for(y=0; y < b_h; y++){ + for(x=0; x < b_w; x++){ + int a_1=tmpI[x + (HTAPS_MAX/2-4)*64]; + int a0= tmpI[x + (HTAPS_MAX/2-3)*64]; + int a1= tmpI[x + (HTAPS_MAX/2-2)*64]; + int a2= tmpI[x + (HTAPS_MAX/2-1)*64]; + int a3= tmpI[x + (HTAPS_MAX/2+0)*64]; + int a4= tmpI[x + (HTAPS_MAX/2+1)*64]; + int a5= tmpI[x + (HTAPS_MAX/2+2)*64]; + int a6= tmpI[x + (HTAPS_MAX/2+3)*64]; + int am=0; + if(!p || p->fast_mc) + am= (20*(a2+a3) - 5*(a1+a4) + (a0+a5) + 512)>>10; + else + am= (p->hcoeff[0]*(a2+a3) + p->hcoeff[1]*(a1+a4) + p->hcoeff[2]*(a0+a5) + p->hcoeff[3]*(a_1+a6) + 2048)>>12; + if(am&(~255)) am= ~(am>>31); + tmp2[x]= am; + } + tmpI+= 64; + tmp2+= 64; + } + } + + hpel[ 0]= src; + hpel[ 1]= tmp2t[0] + 64*(HTAPS_MAX/2-1); + hpel[ 2]= src + 1; + + hpel[ 4]= tmp2t[1]; + hpel[ 5]= tmp2t[2]; + hpel[ 6]= tmp2t[1] + 1; + + hpel[ 8]= src + stride; + hpel[ 9]= hpel[1] + 64; + hpel[10]= hpel[8] + 1; + +#define MC_STRIDE(x) (needs[x] ? 64 : stride) + + if(b==15){ + int dxy = dx / 8 + dy / 8 * 4; + const uint8_t *src1 = hpel[dxy ]; + const uint8_t *src2 = hpel[dxy + 1]; + const uint8_t *src3 = hpel[dxy + 4]; + const uint8_t *src4 = hpel[dxy + 5]; + int stride1 = MC_STRIDE(dxy); + int stride2 = MC_STRIDE(dxy + 1); + int stride3 = MC_STRIDE(dxy + 4); + int stride4 = MC_STRIDE(dxy + 5); + dx&=7; + dy&=7; + for(y=0; y < b_h; y++){ + for(x=0; x < b_w; x++){ + dst[x]= ((8-dx)*(8-dy)*src1[x] + dx*(8-dy)*src2[x]+ + (8-dx)* dy *src3[x] + dx* dy *src4[x]+32)>>6; + } + src1+=stride1; + src2+=stride2; + src3+=stride3; + src4+=stride4; + dst +=stride; + } + }else{ + const uint8_t *src1= hpel[l]; + const uint8_t *src2= hpel[r]; + int stride1 = MC_STRIDE(l); + int stride2 = MC_STRIDE(r); + int a= weight[((dx&7) + (8*(dy&7)))]; + int b= 8-a; + for(y=0; y < b_h; y++){ + for(x=0; x < b_w; x++){ + dst[x]= (a*src1[x] + b*src2[x] + 4)>>3; + } + src1+=stride1; + src2+=stride2; + dst +=stride; + } + } +} + +void ff_snow_pred_block(SnowContext *s, uint8_t *dst, uint8_t *tmp, int stride, int sx, int sy, int b_w, int b_h, BlockNode *block, int plane_index, int w, int h){ + if(block->type & BLOCK_INTRA){ + int x, y; + const unsigned color = block->color[plane_index]; + const unsigned color4 = color*0x01010101; + if(b_w==32){ + for(y=0; y < b_h; y++){ + *(uint32_t*)&dst[0 + y*stride]= color4; + *(uint32_t*)&dst[4 + y*stride]= color4; + *(uint32_t*)&dst[8 + y*stride]= color4; + *(uint32_t*)&dst[12+ y*stride]= color4; + *(uint32_t*)&dst[16+ y*stride]= color4; + *(uint32_t*)&dst[20+ y*stride]= color4; + *(uint32_t*)&dst[24+ y*stride]= color4; + *(uint32_t*)&dst[28+ y*stride]= color4; + } + }else if(b_w==16){ + for(y=0; y < b_h; y++){ + *(uint32_t*)&dst[0 + y*stride]= color4; + *(uint32_t*)&dst[4 + y*stride]= color4; + *(uint32_t*)&dst[8 + y*stride]= color4; + *(uint32_t*)&dst[12+ y*stride]= color4; + } + }else if(b_w==8){ + for(y=0; y < b_h; y++){ + *(uint32_t*)&dst[0 + y*stride]= color4; + *(uint32_t*)&dst[4 + y*stride]= color4; + } + }else if(b_w==4){ + for(y=0; y < b_h; y++){ + *(uint32_t*)&dst[0 + y*stride]= color4; + } + }else{ + for(y=0; y < b_h; y++){ + for(x=0; x < b_w; x++){ + dst[x + y*stride]= color; + } + } + } + }else{ + uint8_t *src= s->last_picture[block->ref].data[plane_index]; + const int scale= plane_index ? (2*s->mv_scale)>>s->chroma_h_shift : 2*s->mv_scale; + int mx= block->mx*scale; + int my= block->my*scale; + const int dx= mx&15; + const int dy= my&15; + const int tab_index= 3 - (b_w>>2) + (b_w>>4); + sx += (mx>>4) - (HTAPS_MAX/2-1); + sy += (my>>4) - (HTAPS_MAX/2-1); + src += sx + sy*stride; + if( (unsigned)sx >= FFMAX(w - b_w - (HTAPS_MAX-2), 0) + || (unsigned)sy >= FFMAX(h - b_h - (HTAPS_MAX-2), 0)){ + s->vdsp.emulated_edge_mc(tmp + MB_SIZE, src, stride, b_w+HTAPS_MAX-1, b_h+HTAPS_MAX-1, sx, sy, w, h); + src= tmp + MB_SIZE; + } + + av_assert2(s->chroma_h_shift == s->chroma_v_shift); // only one mv_scale + +// assert(b_w == b_h || 2*b_w == b_h || b_w == 2*b_h); +// assert(!(b_w&(b_w-1))); + av_assert2(b_w>1 && b_h>1); + av_assert2((tab_index>=0 && tab_index<4) || b_w==32); + if((dx&3) || (dy&3) || !(b_w == b_h || 2*b_w == b_h || b_w == 2*b_h) || (b_w&(b_w-1)) || !s->plane[plane_index].fast_mc ) + mc_block(&s->plane[plane_index], dst, src, stride, b_w, b_h, dx, dy); + else if(b_w==32){ + int y; + for(y=0; y<b_h; y+=16){ + s->h264qpel.put_h264_qpel_pixels_tab[0][dy+(dx>>2)](dst + y*stride, src + 3 + (y+3)*stride,stride); + s->h264qpel.put_h264_qpel_pixels_tab[0][dy+(dx>>2)](dst + 16 + y*stride, src + 19 + (y+3)*stride,stride); + } + }else if(b_w==b_h) + s->h264qpel.put_h264_qpel_pixels_tab[tab_index ][dy+(dx>>2)](dst,src + 3 + 3*stride,stride); + else if(b_w==2*b_h){ + s->h264qpel.put_h264_qpel_pixels_tab[tab_index+1][dy+(dx>>2)](dst ,src + 3 + 3*stride,stride); + s->h264qpel.put_h264_qpel_pixels_tab[tab_index+1][dy+(dx>>2)](dst+b_h,src + 3 + b_h + 3*stride,stride); + }else{ + av_assert2(2*b_w==b_h); + s->h264qpel.put_h264_qpel_pixels_tab[tab_index ][dy+(dx>>2)](dst ,src + 3 + 3*stride ,stride); + s->h264qpel.put_h264_qpel_pixels_tab[tab_index ][dy+(dx>>2)](dst+b_w*stride,src + 3 + 3*stride+b_w*stride,stride); + } + } +} + +#define mca(dx,dy,b_w)\ +static void mc_block_hpel ## dx ## dy ## b_w(uint8_t *dst, const uint8_t *src, ptrdiff_t stride, int h){\ + av_assert2(h==b_w);\ + mc_block(NULL, dst, src-(HTAPS_MAX/2-1)-(HTAPS_MAX/2-1)*stride, stride, b_w, b_w, dx, dy);\ +} + +mca( 0, 0,16) +mca( 8, 0,16) +mca( 0, 8,16) +mca( 8, 8,16) +mca( 0, 0,8) +mca( 8, 0,8) +mca( 0, 8,8) +mca( 8, 8,8) + +av_cold int ff_snow_common_init(AVCodecContext *avctx){ + SnowContext *s = avctx->priv_data; + int width, height; + int i, j; + + s->avctx= avctx; + s->max_ref_frames=1; //just make sure it's not an invalid value in case of no initial keyframe + + ff_dsputil_init(&s->dsp, avctx); + ff_hpeldsp_init(&s->hdsp, avctx->flags); + ff_videodsp_init(&s->vdsp, 8); + ff_dwt_init(&s->dwt); + ff_h264qpel_init(&s->h264qpel, 8); + +#define mcf(dx,dy)\ + s->dsp.put_qpel_pixels_tab [0][dy+dx/4]=\ + s->dsp.put_no_rnd_qpel_pixels_tab[0][dy+dx/4]=\ + s->h264qpel.put_h264_qpel_pixels_tab[0][dy+dx/4];\ + s->dsp.put_qpel_pixels_tab [1][dy+dx/4]=\ + s->dsp.put_no_rnd_qpel_pixels_tab[1][dy+dx/4]=\ + s->h264qpel.put_h264_qpel_pixels_tab[1][dy+dx/4]; + + mcf( 0, 0) + mcf( 4, 0) + mcf( 8, 0) + mcf(12, 0) + mcf( 0, 4) + mcf( 4, 4) + mcf( 8, 4) + mcf(12, 4) + mcf( 0, 8) + mcf( 4, 8) + mcf( 8, 8) + mcf(12, 8) + mcf( 0,12) + mcf( 4,12) + mcf( 8,12) + mcf(12,12) + +#define mcfh(dx,dy)\ + s->hdsp.put_pixels_tab [0][dy/4+dx/8]=\ + s->hdsp.put_no_rnd_pixels_tab[0][dy/4+dx/8]=\ + mc_block_hpel ## dx ## dy ## 16;\ + s->hdsp.put_pixels_tab [1][dy/4+dx/8]=\ + s->hdsp.put_no_rnd_pixels_tab[1][dy/4+dx/8]=\ + mc_block_hpel ## dx ## dy ## 8; + + mcfh(0, 0) + mcfh(8, 0) + mcfh(0, 8) + mcfh(8, 8) + + init_qexp(); + +// dec += FFMAX(s->chroma_h_shift, s->chroma_v_shift); + + width= s->avctx->width; + height= s->avctx->height; + + FF_ALLOCZ_OR_GOTO(avctx, s->spatial_idwt_buffer, width * height * sizeof(IDWTELEM), fail); + FF_ALLOCZ_OR_GOTO(avctx, s->spatial_dwt_buffer, width * height * sizeof(DWTELEM), fail); //FIXME this does not belong here + FF_ALLOCZ_OR_GOTO(avctx, s->temp_dwt_buffer, width * sizeof(DWTELEM), fail); + FF_ALLOCZ_OR_GOTO(avctx, s->temp_idwt_buffer, width * sizeof(IDWTELEM), fail); + FF_ALLOC_OR_GOTO(avctx, s->run_buffer, ((width + 1) >> 1) * ((height + 1) >> 1) * sizeof(*s->run_buffer), fail); + + for(i=0; i<MAX_REF_FRAMES; i++) { + for(j=0; j<MAX_REF_FRAMES; j++) + ff_scale_mv_ref[i][j] = 256*(i+1)/(j+1); + avcodec_get_frame_defaults(&s->last_picture[i]); + } + + avcodec_get_frame_defaults(&s->mconly_picture); + avcodec_get_frame_defaults(&s->current_picture); + + return 0; +fail: + return AVERROR(ENOMEM); +} + +int ff_snow_common_init_after_header(AVCodecContext *avctx) { + SnowContext *s = avctx->priv_data; + int plane_index, level, orientation; + int ret, emu_buf_size; + + if(!s->scratchbuf) { + if ((ret = ff_get_buffer(s->avctx, &s->mconly_picture, + AV_GET_BUFFER_FLAG_REF)) < 0) + return ret; + FF_ALLOCZ_OR_GOTO(avctx, s->scratchbuf, FFMAX(s->mconly_picture.linesize[0], 2*avctx->width+256)*7*MB_SIZE, fail); + emu_buf_size = FFMAX(s->mconly_picture.linesize[0], 2*avctx->width+256) * (2 * MB_SIZE + HTAPS_MAX - 1); + FF_ALLOC_OR_GOTO(avctx, s->emu_edge_buffer, emu_buf_size, fail); + } + + if(s->mconly_picture.format != avctx->pix_fmt) { + av_log(avctx, AV_LOG_ERROR, "pixel format changed\n"); + return AVERROR_INVALIDDATA; + } + + for(plane_index=0; plane_index<3; plane_index++){ + int w= s->avctx->width; + int h= s->avctx->height; + + if(plane_index){ + w>>= s->chroma_h_shift; + h>>= s->chroma_v_shift; + } + s->plane[plane_index].width = w; + s->plane[plane_index].height= h; + + for(level=s->spatial_decomposition_count-1; level>=0; level--){ + for(orientation=level ? 1 : 0; orientation<4; orientation++){ + SubBand *b= &s->plane[plane_index].band[level][orientation]; + + b->buf= s->spatial_dwt_buffer; + b->level= level; + b->stride= s->plane[plane_index].width << (s->spatial_decomposition_count - level); + b->width = (w + !(orientation&1))>>1; + b->height= (h + !(orientation>1))>>1; + + b->stride_line = 1 << (s->spatial_decomposition_count - level); + b->buf_x_offset = 0; + b->buf_y_offset = 0; + + if(orientation&1){ + b->buf += (w+1)>>1; + b->buf_x_offset = (w+1)>>1; + } + if(orientation>1){ + b->buf += b->stride>>1; + b->buf_y_offset = b->stride_line >> 1; + } + b->ibuf= s->spatial_idwt_buffer + (b->buf - s->spatial_dwt_buffer); + + if(level) + b->parent= &s->plane[plane_index].band[level-1][orientation]; + //FIXME avoid this realloc + av_freep(&b->x_coeff); + b->x_coeff=av_mallocz(((b->width+1) * b->height+1)*sizeof(x_and_coeff)); + } + w= (w+1)>>1; + h= (h+1)>>1; + } + } + + return 0; +fail: + return AVERROR(ENOMEM); +} + +#define USE_HALFPEL_PLANE 0 + +static void halfpel_interpol(SnowContext *s, uint8_t *halfpel[4][4], AVFrame *frame){ + int p,x,y; + + for(p=0; p<3; p++){ + int is_chroma= !!p; + int w= is_chroma ? s->avctx->width >>s->chroma_h_shift : s->avctx->width; + int h= is_chroma ? s->avctx->height>>s->chroma_v_shift : s->avctx->height; + int ls= frame->linesize[p]; + uint8_t *src= frame->data[p]; + + halfpel[1][p] = (uint8_t*) av_malloc(ls * (h + 2 * EDGE_WIDTH)) + EDGE_WIDTH * (1 + ls); + halfpel[2][p] = (uint8_t*) av_malloc(ls * (h + 2 * EDGE_WIDTH)) + EDGE_WIDTH * (1 + ls); + halfpel[3][p] = (uint8_t*) av_malloc(ls * (h + 2 * EDGE_WIDTH)) + EDGE_WIDTH * (1 + ls); + + halfpel[0][p]= src; + for(y=0; y<h; y++){ + for(x=0; x<w; x++){ + int i= y*ls + x; + + halfpel[1][p][i]= (20*(src[i] + src[i+1]) - 5*(src[i-1] + src[i+2]) + (src[i-2] + src[i+3]) + 16 )>>5; + } + } + for(y=0; y<h; y++){ + for(x=0; x<w; x++){ + int i= y*ls + x; + + halfpel[2][p][i]= (20*(src[i] + src[i+ls]) - 5*(src[i-ls] + src[i+2*ls]) + (src[i-2*ls] + src[i+3*ls]) + 16 )>>5; + } + } + src= halfpel[1][p]; + for(y=0; y<h; y++){ + for(x=0; x<w; x++){ + int i= y*ls + x; + + halfpel[3][p][i]= (20*(src[i] + src[i+ls]) - 5*(src[i-ls] + src[i+2*ls]) + (src[i-2*ls] + src[i+3*ls]) + 16 )>>5; + } + } + +//FIXME border! + } +} + +void ff_snow_release_buffer(AVCodecContext *avctx) +{ + SnowContext *s = avctx->priv_data; + int i; + + if(s->last_picture[s->max_ref_frames-1].data[0]){ + av_frame_unref(&s->last_picture[s->max_ref_frames-1]); + for(i=0; i<9; i++) + if(s->halfpel_plane[s->max_ref_frames-1][1+i/3][i%3]) + av_free(s->halfpel_plane[s->max_ref_frames-1][1+i/3][i%3] - EDGE_WIDTH*(1+s->current_picture.linesize[i%3])); + } +} + +int ff_snow_frame_start(SnowContext *s){ + AVFrame tmp; + int i, ret; + int w= s->avctx->width; //FIXME round up to x16 ? + int h= s->avctx->height; + + if (s->current_picture.data[0] && !(s->avctx->flags&CODEC_FLAG_EMU_EDGE)) { + s->dsp.draw_edges(s->current_picture.data[0], + s->current_picture.linesize[0], w , h , + EDGE_WIDTH , EDGE_WIDTH , EDGE_TOP | EDGE_BOTTOM); + s->dsp.draw_edges(s->current_picture.data[1], + s->current_picture.linesize[1], w>>s->chroma_h_shift, h>>s->chroma_v_shift, + EDGE_WIDTH>>s->chroma_h_shift, EDGE_WIDTH>>s->chroma_v_shift, EDGE_TOP | EDGE_BOTTOM); + s->dsp.draw_edges(s->current_picture.data[2], + s->current_picture.linesize[2], w>>s->chroma_h_shift, h>>s->chroma_v_shift, + EDGE_WIDTH>>s->chroma_h_shift, EDGE_WIDTH>>s->chroma_v_shift, EDGE_TOP | EDGE_BOTTOM); + } + + ff_snow_release_buffer(s->avctx); + + av_frame_move_ref(&tmp, &s->last_picture[s->max_ref_frames-1]); + for(i=s->max_ref_frames-1; i>0; i--) + av_frame_move_ref(&s->last_picture[i+1], &s->last_picture[i]); + memmove(s->halfpel_plane+1, s->halfpel_plane, (s->max_ref_frames-1)*sizeof(void*)*4*4); + if(USE_HALFPEL_PLANE && s->current_picture.data[0]) + halfpel_interpol(s, s->halfpel_plane[0], &s->current_picture); + av_frame_move_ref(&s->last_picture[0], &s->current_picture); + av_frame_move_ref(&s->current_picture, &tmp); + + if(s->keyframe){ + s->ref_frames= 0; + }else{ + int i; + for(i=0; i<s->max_ref_frames && s->last_picture[i].data[0]; i++) + if(i && s->last_picture[i-1].key_frame) + break; + s->ref_frames= i; + if(s->ref_frames==0){ + av_log(s->avctx,AV_LOG_ERROR, "No reference frames\n"); + return -1; + } + } + + if ((ret = ff_get_buffer(s->avctx, &s->current_picture, AV_GET_BUFFER_FLAG_REF)) < 0) + return ret; + + s->current_picture.key_frame= s->keyframe; + + return 0; +} + +av_cold void ff_snow_common_end(SnowContext *s) +{ + int plane_index, level, orientation, i; + + av_freep(&s->spatial_dwt_buffer); + av_freep(&s->temp_dwt_buffer); + av_freep(&s->spatial_idwt_buffer); + av_freep(&s->temp_idwt_buffer); + av_freep(&s->run_buffer); + + s->m.me.temp= NULL; + av_freep(&s->m.me.scratchpad); + av_freep(&s->m.me.map); + av_freep(&s->m.me.score_map); + av_freep(&s->m.obmc_scratchpad); + + av_freep(&s->block); + av_freep(&s->scratchbuf); + av_freep(&s->emu_edge_buffer); + + for(i=0; i<MAX_REF_FRAMES; i++){ + av_freep(&s->ref_mvs[i]); + av_freep(&s->ref_scores[i]); + if(s->last_picture[i].data[0]) { + av_assert0(s->last_picture[i].data[0] != s->current_picture.data[0]); + av_frame_unref(&s->last_picture[i]); + } + } + + for(plane_index=0; plane_index<3; plane_index++){ + for(level=s->spatial_decomposition_count-1; level>=0; level--){ + for(orientation=level ? 1 : 0; orientation<4; orientation++){ + SubBand *b= &s->plane[plane_index].band[level][orientation]; + + av_freep(&b->x_coeff); + } + } + } + av_frame_unref(&s->mconly_picture); + av_frame_unref(&s->current_picture); +} |