X-Git-Url: https://git.pterodactylus.net/?a=blobdiff_plain;f=synfig-core%2Ftags%2Fsynfig_0_61_04%2Fsynfig-core%2Fsrc%2Fmodules%2Fmod_libavcodec%2Flibavcodec%2Fffv1.c;fp=synfig-core%2Ftags%2Fsynfig_0_61_04%2Fsynfig-core%2Fsrc%2Fmodules%2Fmod_libavcodec%2Flibavcodec%2Fffv1.c;h=0000000000000000000000000000000000000000;hb=6fa8f2f38d4b0b35f8539bf94e27ae27015c7689;hp=c8520a4efa23c45dbb52c831423ace8b1025ee6d;hpb=47fce282611fbba1044921d22ca887f9b53ad91a;p=synfig.git diff --git a/synfig-core/tags/synfig_0_61_04/synfig-core/src/modules/mod_libavcodec/libavcodec/ffv1.c b/synfig-core/tags/synfig_0_61_04/synfig-core/src/modules/mod_libavcodec/libavcodec/ffv1.c deleted file mode 100644 index c8520a4..0000000 --- a/synfig-core/tags/synfig_0_61_04/synfig-core/src/modules/mod_libavcodec/libavcodec/ffv1.c +++ /dev/null @@ -1,940 +0,0 @@ -/* - * FFV1 codec for libavcodec - * - * Copyright (c) 2003 Michael Niedermayer - * - * This library 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 of the License, or (at your option) any later version. - * - * This library 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 this library; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA - * - */ - -/** - * @file ffv1.c - * FF Video Codec 1 (a experimental lossless codec) - */ - -#include "common.h" -#include "avcodec.h" -#include "dsputil.h" -#include "cabac.h" -#include "golomb.h" - -#define MAX_PLANES 4 -#define CONTEXT_SIZE 32 - -static const int8_t quant3[256]={ - 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, - 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, - 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, - 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, - 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, - 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, - 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, - 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, --1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1, --1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1, --1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1, --1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1, --1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1, --1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1, --1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1, --1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1, 0, -}; -static const int8_t quant5[256]={ - 0, 1, 1, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, - 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, - 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, - 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, - 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, - 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, - 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, - 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, --2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2, --2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2, --2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2, --2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2, --2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2, --2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2, --2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2, --2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-1,-1,-1, -}; -static const int8_t quant7[256]={ - 0, 1, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, - 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, - 2, 2, 2, 2, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 3, 3, - 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, - 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, - 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, - 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, - 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, --3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3, --3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3, --3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3, --3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3, --3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3, --3,-3,-3,-3,-3,-3,-3,-3,-3,-2,-2,-2,-2,-2,-2,-2, --2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2, --2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-1,-1, -}; -static const int8_t quant9[256]={ - 0, 1, 1, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 3, 3, 3, - 3, 3, 3, 3, 3, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, - 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, - 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, - 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, - 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, - 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, - 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, --4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4, --4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4, --4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4, --4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4, --4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4, --4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4, --4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-3,-3,-3,-3, --3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-2,-2,-2,-2,-1,-1, -}; -static const int8_t quant11[256]={ - 0, 1, 2, 2, 2, 3, 3, 3, 3, 3, 3, 3, 4, 4, 4, 4, - 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, - 4, 4, 4, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, - 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, - 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, - 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, - 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, - 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, --5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5, --5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5, --5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5, --5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5, --5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5, --5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-4,-4, --4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4, --4,-4,-4,-4,-4,-3,-3,-3,-3,-3,-3,-3,-2,-2,-2,-1, -}; -static const int8_t quant13[256]={ - 0, 1, 2, 2, 3, 3, 3, 3, 4, 4, 4, 4, 4, 4, 4, 4, - 4, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, - 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, - 5, 5, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, - 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, - 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, - 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, - 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, --6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6, --6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6, --6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6, --6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6, --6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-5, --5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5, --5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5, --4,-4,-4,-4,-4,-4,-4,-4,-4,-3,-3,-3,-3,-2,-2,-1, -}; - -static const uint8_t log2_run[32]={ - 0, 0, 0, 0, 1, 1, 1, 1, 2, 2, 2, 2, 3, 3, 3, 3, - 4, 4, 5, 5, 6, 6, 7, 7, - 8, 9,10,11,12,13,14,15, -}; - -typedef struct VlcState{ - int16_t drift; - uint16_t error_sum; - int8_t bias; - uint8_t count; -} VlcState; - -typedef struct PlaneContext{ - int context_count; - uint8_t (*state)[CONTEXT_SIZE]; - VlcState *vlc_state; - uint8_t interlace_bit_state[2]; -} PlaneContext; - -typedef struct FFV1Context{ - AVCodecContext *avctx; - CABACContext c; - GetBitContext gb; - PutBitContext pb; - int version; - int width, height; - int chroma_h_shift, chroma_v_shift; - int flags; - int picture_number; - AVFrame picture; - int plane_count; - int ac; ///< 1-> CABAC 0-> golomb rice - PlaneContext plane[MAX_PLANES]; - int16_t quant_table[5][256]; - - DSPContext dsp; -}FFV1Context; - -static inline int predict(uint8_t *src, uint8_t *last){ - const int LT= last[-1]; - const int T= last[ 0]; - const int L = src[-1]; - - return mid_pred(L, L + T - LT, T); -} - -static inline int get_context(FFV1Context *f, uint8_t *src, uint8_t *last, uint8_t *last2){ - const int LT= last[-1]; - const int T= last[ 0]; - const int RT= last[ 1]; - const int L = src[-1]; - - if(f->quant_table[3][127]){ - const int TT= last2[0]; - const int LL= src[-2]; - return f->quant_table[0][(L-LT) & 0xFF] + f->quant_table[1][(LT-T) & 0xFF] + f->quant_table[2][(T-RT) & 0xFF] - +f->quant_table[3][(LL-L) & 0xFF] + f->quant_table[4][(TT-T) & 0xFF]; - }else - return f->quant_table[0][(L-LT) & 0xFF] + f->quant_table[1][(LT-T) & 0xFF] + f->quant_table[2][(T-RT) & 0xFF]; -} - -/** - * put - */ -static inline void put_symbol(CABACContext *c, uint8_t *state, int v, int is_signed, int max_exp){ - int i; - - if(v){ - const int a= ABS(v); - const int e= av_log2(a); - - put_cabac(c, state+0, 0); - - for(i=0; i=0; i--){ - put_cabac(c, state+16+e+i, (a>>i)&1); //17..29 - } - if(is_signed) - put_cabac(c, state+9 + e, v < 0); //9..16 - } - }else{ - put_cabac(c, state+0, 1); - } -} - -static inline int get_symbol(CABACContext *c, uint8_t *state, int is_signed, int max_exp){ - if(get_cabac(c, state+0)) - return 0; - else{ - int i, e; - - for(e=0; e=0; i--){ - a += get_cabac(c, state+16+e+i)<drift; - int count= state->count; - state->error_sum += ABS(v); - drift += v; - - if(count == 128){ //FIXME variable - count >>= 1; - drift >>= 1; - state->error_sum >>= 1; - } - count++; - - if(drift <= -count){ - if(state->bias > -128) state->bias--; - - drift += count; - if(drift <= -count) - drift= -count + 1; - }else if(drift > 0){ - if(state->bias < 127) state->bias++; - - drift -= count; - if(drift > 0) - drift= 0; - } - - state->drift= drift; - state->count= count; -} - -static inline void put_vlc_symbol(PutBitContext *pb, VlcState * const state, int v){ - int i, k, code; -//printf("final: %d ", v); - v = (int8_t)(v - state->bias); - - i= state->count; - k=0; - while(i < state->error_sum){ //FIXME optimize - k++; - i += i; - } - - assert(k<=8); - -#if 0 // JPEG LS - if(k==0 && 2*state->drift <= - state->count) code= v ^ (-1); - else code= v; -#else - code= v ^ ((2*state->drift + state->count)>>31); -#endif - - code = -2*code-1; - code^= (code>>31); -//printf("v:%d/%d bias:%d error:%d drift:%d count:%d k:%d\n", v, code, state->bias, state->error_sum, state->drift, state->count, k); - set_ur_golomb(pb, code, k, 12, 8); - - update_vlc_state(state, v); -} - -static inline int get_vlc_symbol(GetBitContext *gb, VlcState * const state){ - int k, i, v, ret; - - i= state->count; - k=0; - while(i < state->error_sum){ //FIXME optimize - k++; - i += i; - } - - assert(k<=8); - - v= get_ur_golomb(gb, k, 12, 8); -//printf("v:%d bias:%d error:%d drift:%d count:%d k:%d", v, state->bias, state->error_sum, state->drift, state->count, k); - - v++; - if(v&1) v= (v>>1); - else v= -(v>>1); - -#if 0 // JPEG LS - if(k==0 && 2*state->drift <= - state->count) v ^= (-1); -#else - v ^= ((2*state->drift + state->count)>>31); -#endif - - ret= (int8_t)(v + state->bias); - - update_vlc_state(state, v); -//printf("final: %d\n", ret); - return ret; -} - - - -static void encode_plane(FFV1Context *s, uint8_t *src, int w, int h, int stride, int plane_index){ - PlaneContext * const p= &s->plane[plane_index]; - CABACContext * const c= &s->c; - int x,y; - uint8_t sample_buffer[2][w+6]; - uint8_t *sample[2]= {sample_buffer[0]+3, sample_buffer[1]+3}; - int run_index=0; - - memset(sample_buffer, 0, sizeof(sample_buffer)); - - for(y=0; yac){ - put_symbol(c, p->state[context], diff, 1, 7); - }else{ - if(context == 0) run_mode=1; - - if(run_mode){ - - if(diff){ - while(run_count >= 1<pb, 1, 1); - } - - put_bits(&s->pb, 1 + log2_run[run_index], run_count); - if(run_index) run_index--; - run_count=0; - run_mode=0; - if(diff>0) diff--; - }else{ - run_count++; - } - } - -// printf("count:%d index:%d, mode:%d, x:%d y:%d pos:%d\n", run_count, run_index, run_mode, x, y, (int)get_bit_count(&s->pb)); - - if(run_mode == 0) - put_vlc_symbol(&s->pb, &p->vlc_state[context], diff); - } - - sample[1][x]= temp_src[0]; - } - if(run_mode){ - while(run_count >= 1<pb, 1, 1); - } - - if(run_count) - put_bits(&s->pb, 1, 1); - } - } -} - -static void write_quant_table(CABACContext *c, int16_t *quant_table){ - int last=0; - int i; - uint8_t state[CONTEXT_SIZE]={0}; - - for(i=1; i<128 ; i++){ - if(quant_table[i] != quant_table[i-1]){ - put_symbol(c, state, i-last-1, 0, 7); - last= i; - } - } - put_symbol(c, state, i-last-1, 0, 7); -} - -static void write_header(FFV1Context *f){ - uint8_t state[CONTEXT_SIZE]={0}; - int i; - CABACContext * const c= &f->c; - - put_symbol(c, state, f->version, 0, 7); - put_symbol(c, state, f->avctx->coder_type, 0, 7); - put_symbol(c, state, 0, 0, 7); //YUV cs type - put_cabac(c, state, 1); //chroma planes - put_symbol(c, state, f->chroma_h_shift, 0, 7); - put_symbol(c, state, f->chroma_v_shift, 0, 7); - put_cabac(c, state, 0); //no transparency plane - - for(i=0; i<5; i++) - write_quant_table(c, f->quant_table[i]); -} - -static int common_init(AVCodecContext *avctx){ - FFV1Context *s = avctx->priv_data; - int width, height; - - s->avctx= avctx; - s->flags= avctx->flags; - - dsputil_init(&s->dsp, avctx); - - width= s->width= avctx->width; - height= s->height= avctx->height; - - assert(width && height); - - return 0; -} - -static int encode_init(AVCodecContext *avctx) -{ - FFV1Context *s = avctx->priv_data; - int i; - - common_init(avctx); - - s->version=0; - s->ac= avctx->coder_type; - - s->plane_count=2; - for(i=0; i<256; i++){ - s->quant_table[0][i]= quant11[i]; - s->quant_table[1][i]= 11*quant11[i]; - if(avctx->context_model==0){ - s->quant_table[2][i]= 11*11*quant11[i]; - s->quant_table[3][i]= - s->quant_table[4][i]=0; - }else{ - s->quant_table[2][i]= 11*11*quant5 [i]; - s->quant_table[3][i]= 5*11*11*quant5 [i]; - s->quant_table[4][i]= 5*5*11*11*quant5 [i]; - } - } - - for(i=0; iplane_count; i++){ - PlaneContext * const p= &s->plane[i]; - - if(avctx->context_model==0){ - p->context_count= (11*11*11+1)/2; - }else{ - p->context_count= (11*11*5*5*5+1)/2; - } - - if(s->ac){ - if(!p->state) p->state= av_malloc(CONTEXT_SIZE*p->context_count*sizeof(uint8_t)); - }else{ - if(!p->vlc_state) p->vlc_state= av_malloc(p->context_count*sizeof(VlcState)); - } - } - - avctx->coded_frame= &s->picture; - switch(avctx->pix_fmt){ - case PIX_FMT_YUV444P: - case PIX_FMT_YUV422P: - case PIX_FMT_YUV420P: - case PIX_FMT_YUV411P: - case PIX_FMT_YUV410P: - avcodec_get_chroma_sub_sample(avctx->pix_fmt, &s->chroma_h_shift, &s->chroma_v_shift); - break; - default: - fprintf(stderr, "format not supported\n"); - return -1; - } - - - s->picture_number=0; - - return 0; -} - - -static void clear_state(FFV1Context *f){ - int i, j; - - for(i=0; iplane_count; i++){ - PlaneContext *p= &f->plane[i]; - - p->interlace_bit_state[0]= 0; - p->interlace_bit_state[1]= 0; - - for(j=0; jcontext_count; j++){ - if(f->ac){ - memset(p->state[j], 0, sizeof(uint8_t)*CONTEXT_SIZE); - p->state[j][7] = 2*62; - }else{ - p->vlc_state[j].drift= 0; - p->vlc_state[j].error_sum= 4; //FFMAX((RANGE + 32)/64, 2); - p->vlc_state[j].bias= 0; - p->vlc_state[j].count= 1; - } - } - } -} - -static int encode_frame(AVCodecContext *avctx, unsigned char *buf, int buf_size, void *data){ - FFV1Context *f = avctx->priv_data; - CABACContext * const c= &f->c; - AVFrame *pict = data; - const int width= f->width; - const int height= f->height; - AVFrame * const p= &f->picture; - int used_count= 0; - - if(avctx->strict_std_compliance >= 0){ - printf("this codec is under development, files encoded with it wont be decodeable with future versions!!!\n" - "use vstrict=-1 to use it anyway\n"); - return -1; - } - - ff_init_cabac_encoder(c, buf, buf_size); - ff_init_cabac_states(c, ff_h264_lps_range, ff_h264_mps_state, ff_h264_lps_state, 64); - - *p = *pict; - p->pict_type= FF_I_TYPE; - - if(avctx->gop_size==0 || f->picture_number % avctx->gop_size == 0){ - put_cabac_bypass(c, 1); - p->key_frame= 1; - write_header(f); - clear_state(f); - }else{ - put_cabac_bypass(c, 0); - p->key_frame= 0; - } - - if(!f->ac){ - used_count += put_cabac_terminate(c, 1); -//printf("pos=%d\n", used_count); - init_put_bits(&f->pb, buf + used_count, buf_size - used_count, NULL, NULL); - } - - if(1){ - const int chroma_width = -((-width )>>f->chroma_h_shift); - const int chroma_height= -((-height)>>f->chroma_v_shift); - - encode_plane(f, p->data[0], width, height, p->linesize[0], 0); - - encode_plane(f, p->data[1], chroma_width, chroma_height, p->linesize[1], 1); - encode_plane(f, p->data[2], chroma_width, chroma_height, p->linesize[2], 1); - } - emms_c(); - - f->picture_number++; - - if(f->ac){ - return put_cabac_terminate(c, 1); - }else{ - flush_put_bits(&f->pb); //nicer padding FIXME - return used_count + (get_bit_count(&f->pb)+7)/8; - } -} - -static void common_end(FFV1Context *s){ - int i; - - for(i=0; iplane_count; i++){ - PlaneContext *p= &s->plane[i]; - - av_freep(&p->state); - } -} - -static int encode_end(AVCodecContext *avctx) -{ - FFV1Context *s = avctx->priv_data; - - common_end(s); - - return 0; -} - -static void decode_plane(FFV1Context *s, uint8_t *src, int w, int h, int stride, int plane_index){ - PlaneContext * const p= &s->plane[plane_index]; - CABACContext * const c= &s->c; - int x,y; - uint8_t sample_buffer[2][w+6]; - uint8_t *sample[2]= {sample_buffer[0]+3, sample_buffer[1]+3}; - int run_index=0; - - memset(sample_buffer, 0, sizeof(sample_buffer)); - - for(y=0; yac) - diff= get_symbol(c, p->state[context], 1, 7); - else{ - if(context == 0 && run_mode==0) run_mode=1; - - if(run_mode){ - if(run_count==0 && run_mode==1){ - if(get_bits1(&s->gb)){ - run_count = 1<gb, log2_run[run_index]); - else run_count=0; - if(run_index) run_index--; - run_mode=2; - } - } - run_count--; - if(run_count < 0){ - run_mode=0; - run_count=0; - diff= get_vlc_symbol(&s->gb, &p->vlc_state[context]); - if(diff>=0) diff++; - }else - diff=0; - }else - diff= get_vlc_symbol(&s->gb, &p->vlc_state[context]); - -// printf("count:%d index:%d, mode:%d, x:%d y:%d pos:%d\n", run_count, run_index, run_mode, x, y, get_bits_count(&s->gb)); - } - - if(sign) diff= (int8_t)(-diff); //FIXME remove cast - - sample[1][x]= - temp_src[0] = predict(sample[1] + x, sample[0] + x) + diff; - - assert(diff>= -128 && diff <= 127); - } - } -} - -static int read_quant_table(CABACContext *c, int16_t *quant_table, int scale){ - int v; - int i=0; - uint8_t state[CONTEXT_SIZE]={0}; - - for(v=0; i<128 ; v++){ - int len= get_symbol(c, state, 0, 7) + 1; - - if(len + i > 128) return -1; - - while(len--){ - quant_table[i] = scale*v; - i++; -//printf("%2d ",v); -//if(i%16==0) printf("\n"); - } - } - - for(i=1; i<128; i++){ - quant_table[256-i]= -quant_table[i]; - } - quant_table[128]= -quant_table[127]; - - return 2*v - 1; -} - -static int read_header(FFV1Context *f){ - uint8_t state[CONTEXT_SIZE]={0}; - int i, context_count; - CABACContext * const c= &f->c; - - f->version= get_symbol(c, state, 0, 7); - f->ac= f->avctx->coder_type= get_symbol(c, state, 0, 7); - get_symbol(c, state, 0, 7); //YUV cs type - get_cabac(c, state); //no chroma = false - f->chroma_h_shift= get_symbol(c, state, 0, 7); - f->chroma_v_shift= get_symbol(c, state, 0, 7); - get_cabac(c, state); //transparency plane - f->plane_count= 2; - - switch(16*f->chroma_h_shift + f->chroma_v_shift){ - case 0x00: f->avctx->pix_fmt= PIX_FMT_YUV444P; break; - case 0x10: f->avctx->pix_fmt= PIX_FMT_YUV422P; break; - case 0x11: f->avctx->pix_fmt= PIX_FMT_YUV420P; break; - case 0x20: f->avctx->pix_fmt= PIX_FMT_YUV411P; break; - case 0x33: f->avctx->pix_fmt= PIX_FMT_YUV410P; break; - default: - fprintf(stderr, "format not supported\n"); - return -1; - } -//printf("%d %d %d\n", f->chroma_h_shift, f->chroma_v_shift,f->avctx->pix_fmt); - - context_count=1; - for(i=0; i<5; i++){ - context_count*= read_quant_table(c, f->quant_table[i], context_count); - if(context_count < 0){ - printf("read_quant_table error\n"); - return -1; - } - } - context_count= (context_count+1)/2; - - for(i=0; iplane_count; i++){ - PlaneContext * const p= &f->plane[i]; - - p->context_count= context_count; - - if(f->ac){ - if(!p->state) p->state= av_malloc(CONTEXT_SIZE*p->context_count*sizeof(uint8_t)); - }else{ - if(!p->vlc_state) p->vlc_state= av_malloc(p->context_count*sizeof(VlcState)); - } - } - - return 0; -} - -static int decode_init(AVCodecContext *avctx) -{ -// FFV1Context *s = avctx->priv_data; - - common_init(avctx); - -#if 0 - switch(s->bitstream_bpp){ - case 12: - avctx->pix_fmt = PIX_FMT_YUV420P; - break; - case 16: - avctx->pix_fmt = PIX_FMT_YUV422P; - break; - case 24: - case 32: - if(s->bgr32){ - avctx->pix_fmt = PIX_FMT_RGBA32; - }else{ - avctx->pix_fmt = PIX_FMT_BGR24; - } - break; - default: - assert(0); - } -#endif - - return 0; -} - -static int decode_frame(AVCodecContext *avctx, void *data, int *data_size, uint8_t *buf, int buf_size){ - FFV1Context *f = avctx->priv_data; - CABACContext * const c= &f->c; - const int width= f->width; - const int height= f->height; - AVFrame * const p= &f->picture; - int bytes_read; - - AVFrame *picture = data; - - *data_size = 0; - - /* no supplementary picture */ - if (buf_size == 0) - return 0; - - ff_init_cabac_decoder(c, buf, buf_size); - ff_init_cabac_states(c, ff_h264_lps_range, ff_h264_mps_state, ff_h264_lps_state, 64); - - p->pict_type= FF_I_TYPE; //FIXME I vs. P - if(get_cabac_bypass(c)){ - p->key_frame= 1; - read_header(f); - clear_state(f); - }else{ - p->key_frame= 0; - } - - p->reference= 0; - if(avctx->get_buffer(avctx, p) < 0){ - fprintf(stderr, "get_buffer() failed\n"); - return -1; - } - - if(avctx->debug&FF_DEBUG_PICT_INFO) - printf("keyframe:%d coder:%d\n", p->key_frame, f->ac); - - if(!f->ac){ - bytes_read = get_cabac_terminate(c); - if(bytes_read ==0) printf("error at end of AC stream\n"); -//printf("pos=%d\n", bytes_read); - init_get_bits(&f->gb, buf + bytes_read, buf_size - bytes_read); - } else { - bytes_read = 0; /* avoid warning */ - } - - if(1){ - const int chroma_width = -((-width )>>f->chroma_h_shift); - const int chroma_height= -((-height)>>f->chroma_v_shift); - decode_plane(f, p->data[0], width, height, p->linesize[0], 0); - - decode_plane(f, p->data[1], chroma_width, chroma_height, p->linesize[1], 1); - decode_plane(f, p->data[2], chroma_width, chroma_height, p->linesize[2], 1); - } - - emms_c(); - - f->picture_number++; - - *picture= *p; - - avctx->release_buffer(avctx, p); //FIXME - - *data_size = sizeof(AVFrame); - - if(f->ac){ - bytes_read= get_cabac_terminate(c); - if(bytes_read ==0) printf("error at end of frame\n"); - }else{ - bytes_read+= (get_bits_count(&f->gb)+7)/8; - } - - return bytes_read; -} - -static int decode_end(AVCodecContext *avctx) -{ - FFV1Context *s = avctx->priv_data; - int i; - - if(avctx->get_buffer == avcodec_default_get_buffer){ - for(i=0; i<4; i++){ - av_freep(&s->picture.base[i]); - s->picture.data[i]= NULL; - } - av_freep(&s->picture.opaque); - } - - return 0; -} - -AVCodec ffv1_decoder = { - "ffv1", - CODEC_TYPE_VIDEO, - CODEC_ID_FFV1, - sizeof(FFV1Context), - decode_init, - NULL, - decode_end, - decode_frame, - CODEC_CAP_DR1 /*| CODEC_CAP_DRAW_HORIZ_BAND*/, - NULL -}; - -#ifdef CONFIG_ENCODERS -AVCodec ffv1_encoder = { - "ffv1", - CODEC_TYPE_VIDEO, - CODEC_ID_FFV1, - sizeof(FFV1Context), - encode_init, - encode_frame, - encode_end, -}; -#endif