| /* |
| * FFV1 codec for libavcodec |
| * |
| * Copyright (c) 2003 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 |
| */ |
| |
| /** |
| * @file |
| * FF Video Codec 1 (a lossless codec) |
| */ |
| |
| #include "avcodec.h" |
| #include "get_bits.h" |
| #include "put_bits.h" |
| #include "dsputil.h" |
| #include "rangecoder.h" |
| #include "golomb.h" |
| #include "mathops.h" |
| #include "libavutil/avassert.h" |
| |
| #define MAX_PLANES 4 |
| #define CONTEXT_SIZE 32 |
| |
| #define MAX_QUANT_TABLES 8 |
| #define MAX_CONTEXT_INPUTS 5 |
| |
| extern const uint8_t ff_log2_run[41]; |
| |
| static const int8_t quant5_10bit[256]={ |
| 0, 0, 0, 0, 0, 0, 0, 0, 0, 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, 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,-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,-0,-0,-0,-0,-0,-0,-0,-0,-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 quant9_10bit[256]={ |
| 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 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, 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,-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,-1,-1,-1,-1,-1,-1,-1,-1,-0,-0,-0,-0, |
| }; |
| |
| 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 uint8_t ver2_state[256]= { |
| 0, 10, 10, 10, 10, 16, 16, 16, 28, 16, 16, 29, 42, 49, 20, 49, |
| 59, 25, 26, 26, 27, 31, 33, 33, 33, 34, 34, 37, 67, 38, 39, 39, |
| 40, 40, 41, 79, 43, 44, 45, 45, 48, 48, 64, 50, 51, 52, 88, 52, |
| 53, 74, 55, 57, 58, 58, 74, 60, 101, 61, 62, 84, 66, 66, 68, 69, |
| 87, 82, 71, 97, 73, 73, 82, 75, 111, 77, 94, 78, 87, 81, 83, 97, |
| 85, 83, 94, 86, 99, 89, 90, 99, 111, 92, 93, 134, 95, 98, 105, 98, |
| 105, 110, 102, 108, 102, 118, 103, 106, 106, 113, 109, 112, 114, 112, 116, 125, |
| 115, 116, 117, 117, 126, 119, 125, 121, 121, 123, 145, 124, 126, 131, 127, 129, |
| 165, 130, 132, 138, 133, 135, 145, 136, 137, 139, 146, 141, 143, 142, 144, 148, |
| 147, 155, 151, 149, 151, 150, 152, 157, 153, 154, 156, 168, 158, 162, 161, 160, |
| 172, 163, 169, 164, 166, 184, 167, 170, 177, 174, 171, 173, 182, 176, 180, 178, |
| 175, 189, 179, 181, 186, 183, 192, 185, 200, 187, 191, 188, 190, 197, 193, 196, |
| 197, 194, 195, 196, 198, 202, 199, 201, 210, 203, 207, 204, 205, 206, 208, 214, |
| 209, 211, 221, 212, 213, 215, 224, 216, 217, 218, 219, 220, 222, 228, 223, 225, |
| 226, 224, 227, 229, 240, 230, 231, 232, 233, 234, 235, 236, 238, 239, 237, 242, |
| 241, 243, 242, 244, 245, 246, 247, 248, 249, 250, 251, 252, 252, 253, 254, 255, |
| }; |
| |
| typedef struct VlcState{ |
| int16_t drift; |
| uint16_t error_sum; |
| int8_t bias; |
| uint8_t count; |
| } VlcState; |
| |
| typedef struct PlaneContext{ |
| int16_t quant_table[MAX_CONTEXT_INPUTS][256]; |
| int quant_table_index; |
| int context_count; |
| uint8_t (*state)[CONTEXT_SIZE]; |
| VlcState *vlc_state; |
| uint8_t interlace_bit_state[2]; |
| } PlaneContext; |
| |
| #define MAX_SLICES 256 |
| |
| typedef struct FFV1Context{ |
| AVCodecContext *avctx; |
| RangeCoder c; |
| GetBitContext gb; |
| PutBitContext pb; |
| uint64_t rc_stat[256][2]; |
| uint64_t (*rc_stat2[MAX_QUANT_TABLES])[32][2]; |
| int version; |
| int width, height; |
| int chroma_h_shift, chroma_v_shift; |
| int transparency; |
| int flags; |
| int picture_number; |
| AVFrame picture; |
| int plane_count; |
| int ac; ///< 1=range coder <-> 0=golomb rice |
| PlaneContext plane[MAX_PLANES]; |
| int16_t quant_table[MAX_CONTEXT_INPUTS][256]; |
| int16_t quant_tables[MAX_QUANT_TABLES][MAX_CONTEXT_INPUTS][256]; |
| int context_count[MAX_QUANT_TABLES]; |
| uint8_t state_transition[256]; |
| uint8_t (*initial_states[MAX_QUANT_TABLES])[32]; |
| int run_index; |
| int colorspace; |
| int16_t *sample_buffer; |
| int gob_count; |
| int packed_at_lsb; |
| |
| int quant_table_count; |
| |
| DSPContext dsp; |
| |
| struct FFV1Context *slice_context[MAX_SLICES]; |
| int slice_count; |
| int num_v_slices; |
| int num_h_slices; |
| int slice_width; |
| int slice_height; |
| int slice_x; |
| int slice_y; |
| }FFV1Context; |
| |
| static av_always_inline int fold(int diff, int bits){ |
| if(bits==8) |
| diff= (int8_t)diff; |
| else{ |
| diff+= 1<<(bits-1); |
| diff&=(1<<bits)-1; |
| diff-= 1<<(bits-1); |
| } |
| |
| return diff; |
| } |
| |
| static inline int predict(int16_t *src, int16_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(PlaneContext *p, int16_t *src, |
| int16_t *last, int16_t *last2) |
| { |
| const int LT= last[-1]; |
| const int T= last[ 0]; |
| const int RT= last[ 1]; |
| const int L = src[-1]; |
| |
| if(p->quant_table[3][127]){ |
| const int TT= last2[0]; |
| const int LL= src[-2]; |
| return p->quant_table[0][(L-LT) & 0xFF] + p->quant_table[1][(LT-T) & 0xFF] + p->quant_table[2][(T-RT) & 0xFF] |
| +p->quant_table[3][(LL-L) & 0xFF] + p->quant_table[4][(TT-T) & 0xFF]; |
| }else |
| return p->quant_table[0][(L-LT) & 0xFF] + p->quant_table[1][(LT-T) & 0xFF] + p->quant_table[2][(T-RT) & 0xFF]; |
| } |
| |
| static void find_best_state(uint8_t best_state[256][256], const uint8_t one_state[256]){ |
| int i,j,k,m; |
| double l2tab[256]; |
| |
| for(i=1; i<256; i++) |
| l2tab[i]= log2(i/256.0); |
| |
| for(i=0; i<256; i++){ |
| double best_len[256]; |
| double p= i/256.0; |
| |
| for(j=0; j<256; j++) |
| best_len[j]= 1<<30; |
| |
| for(j=FFMAX(i-10,1); j<FFMIN(i+11,256); j++){ |
| double occ[256]={0}; |
| double len=0; |
| occ[j]=1.0; |
| for(k=0; k<256; k++){ |
| double newocc[256]={0}; |
| for(m=1; m<256; m++){ |
| if(occ[m]){ |
| len -=occ[m]*( p *l2tab[ m] |
| + (1-p)*l2tab[256-m]); |
| } |
| } |
| if(len < best_len[k]){ |
| best_len[k]= len; |
| best_state[i][k]= j; |
| } |
| for(m=0; m<256; m++){ |
| if(occ[m]){ |
| newocc[ one_state[ m]] += occ[m]* p ; |
| newocc[256-one_state[256-m]] += occ[m]*(1-p); |
| } |
| } |
| memcpy(occ, newocc, sizeof(occ)); |
| } |
| } |
| } |
| } |
| |
| static av_always_inline av_flatten void put_symbol_inline(RangeCoder *c, uint8_t *state, int v, int is_signed, uint64_t rc_stat[256][2], uint64_t rc_stat2[32][2]){ |
| int i; |
| |
| #define put_rac(C,S,B) \ |
| do{\ |
| if(rc_stat){\ |
| rc_stat[*(S)][B]++;\ |
| rc_stat2[(S)-state][B]++;\ |
| }\ |
| put_rac(C,S,B);\ |
| }while(0) |
| |
| if(v){ |
| const int a= FFABS(v); |
| const int e= av_log2(a); |
| put_rac(c, state+0, 0); |
| if(e<=9){ |
| for(i=0; i<e; i++){ |
| put_rac(c, state+1+i, 1); //1..10 |
| } |
| put_rac(c, state+1+i, 0); |
| |
| for(i=e-1; i>=0; i--){ |
| put_rac(c, state+22+i, (a>>i)&1); //22..31 |
| } |
| |
| if(is_signed) |
| put_rac(c, state+11 + e, v < 0); //11..21 |
| }else{ |
| for(i=0; i<e; i++){ |
| put_rac(c, state+1+FFMIN(i,9), 1); //1..10 |
| } |
| put_rac(c, state+1+9, 0); |
| |
| for(i=e-1; i>=0; i--){ |
| put_rac(c, state+22+FFMIN(i,9), (a>>i)&1); //22..31 |
| } |
| |
| if(is_signed) |
| put_rac(c, state+11 + 10, v < 0); //11..21 |
| } |
| }else{ |
| put_rac(c, state+0, 1); |
| } |
| #undef put_rac |
| } |
| |
| static void av_noinline put_symbol(RangeCoder *c, uint8_t *state, int v, int is_signed){ |
| put_symbol_inline(c, state, v, is_signed, NULL, NULL); |
| } |
| |
| static inline av_flatten int get_symbol_inline(RangeCoder *c, uint8_t *state, int is_signed){ |
| if(get_rac(c, state+0)) |
| return 0; |
| else{ |
| int i, e, a; |
| e= 0; |
| while(get_rac(c, state+1 + FFMIN(e,9))){ //1..10 |
| e++; |
| } |
| |
| a= 1; |
| for(i=e-1; i>=0; i--){ |
| a += a + get_rac(c, state+22 + FFMIN(i,9)); //22..31 |
| } |
| |
| e= -(is_signed && get_rac(c, state+11 + FFMIN(e, 10))); //11..21 |
| return (a^e)-e; |
| } |
| } |
| |
| static int av_noinline get_symbol(RangeCoder *c, uint8_t *state, int is_signed){ |
| return get_symbol_inline(c, state, is_signed); |
| } |
| |
| static inline void update_vlc_state(VlcState * const state, const int v){ |
| int drift= state->drift; |
| int count= state->count; |
| state->error_sum += FFABS(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 bits){ |
| int i, k, code; |
| //printf("final: %d ", v); |
| v = fold(v - state->bias, bits); |
| |
| 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 |
| |
| //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_sr_golomb(pb, code, k, 12, bits); |
| |
| update_vlc_state(state, v); |
| } |
| |
| static inline int get_vlc_symbol(GetBitContext *gb, VlcState * const state, int bits){ |
| 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_sr_golomb(gb, k, 12, bits); |
| //printf("v:%d bias:%d error:%d drift:%d count:%d k:%d", v, state->bias, state->error_sum, state->drift, state->count, k); |
| |
| #if 0 // JPEG LS |
| if(k==0 && 2*state->drift <= - state->count) v ^= (-1); |
| #else |
| v ^= ((2*state->drift + state->count)>>31); |
| #endif |
| |
| ret= fold(v + state->bias, bits); |
| |
| update_vlc_state(state, v); |
| //printf("final: %d\n", ret); |
| return ret; |
| } |
| |
| #if CONFIG_FFV1_ENCODER |
| static av_always_inline int encode_line(FFV1Context *s, int w, |
| int16_t *sample[2], |
| int plane_index, int bits) |
| { |
| PlaneContext * const p= &s->plane[plane_index]; |
| RangeCoder * const c= &s->c; |
| int x; |
| int run_index= s->run_index; |
| int run_count=0; |
| int run_mode=0; |
| |
| if(s->ac){ |
| if(c->bytestream_end - c->bytestream < w*20){ |
| av_log(s->avctx, AV_LOG_ERROR, "encoded frame too large\n"); |
| return -1; |
| } |
| }else{ |
| if(s->pb.buf_end - s->pb.buf - (put_bits_count(&s->pb)>>3) < w*4){ |
| av_log(s->avctx, AV_LOG_ERROR, "encoded frame too large\n"); |
| return -1; |
| } |
| } |
| |
| for(x=0; x<w; x++){ |
| int diff, context; |
| |
| context= get_context(p, sample[0]+x, sample[1]+x, sample[2]+x); |
| diff= sample[0][x] - predict(sample[0]+x, sample[1]+x); |
| |
| if(context < 0){ |
| context = -context; |
| diff= -diff; |
| } |
| |
| diff= fold(diff, bits); |
| |
| if(s->ac){ |
| if(s->flags & CODEC_FLAG_PASS1){ |
| put_symbol_inline(c, p->state[context], diff, 1, s->rc_stat, s->rc_stat2[p->quant_table_index][context]); |
| }else{ |
| put_symbol_inline(c, p->state[context], diff, 1, NULL, NULL); |
| } |
| }else{ |
| if(context == 0) run_mode=1; |
| |
| if(run_mode){ |
| |
| if(diff){ |
| while(run_count >= 1<<ff_log2_run[run_index]){ |
| run_count -= 1<<ff_log2_run[run_index]; |
| run_index++; |
| put_bits(&s->pb, 1, 1); |
| } |
| |
| put_bits(&s->pb, 1 + ff_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)put_bits_count(&s->pb)); |
| |
| if(run_mode == 0) |
| put_vlc_symbol(&s->pb, &p->vlc_state[context], diff, bits); |
| } |
| } |
| if(run_mode){ |
| while(run_count >= 1<<ff_log2_run[run_index]){ |
| run_count -= 1<<ff_log2_run[run_index]; |
| run_index++; |
| put_bits(&s->pb, 1, 1); |
| } |
| |
| if(run_count) |
| put_bits(&s->pb, 1, 1); |
| } |
| s->run_index= run_index; |
| |
| return 0; |
| } |
| |
| static void encode_plane(FFV1Context *s, uint8_t *src, int w, int h, int stride, int plane_index){ |
| int x,y,i; |
| const int ring_size= s->avctx->context_model ? 3 : 2; |
| int16_t *sample[3]; |
| s->run_index=0; |
| |
| memset(s->sample_buffer, 0, ring_size*(w+6)*sizeof(*s->sample_buffer)); |
| |
| for(y=0; y<h; y++){ |
| for(i=0; i<ring_size; i++) |
| sample[i]= s->sample_buffer + (w+6)*((h+i-y)%ring_size) + 3; |
| |
| sample[0][-1]= sample[1][0 ]; |
| sample[1][ w]= sample[1][w-1]; |
| //{START_TIMER |
| if(s->avctx->bits_per_raw_sample<=8){ |
| for(x=0; x<w; x++){ |
| sample[0][x]= src[x + stride*y]; |
| } |
| encode_line(s, w, sample, plane_index, 8); |
| }else{ |
| if(s->packed_at_lsb){ |
| for(x=0; x<w; x++){ |
| sample[0][x]= ((uint16_t*)(src + stride*y))[x]; |
| } |
| }else{ |
| for(x=0; x<w; x++){ |
| sample[0][x]= ((uint16_t*)(src + stride*y))[x] >> (16 - s->avctx->bits_per_raw_sample); |
| } |
| } |
| encode_line(s, w, sample, plane_index, s->avctx->bits_per_raw_sample); |
| } |
| //STOP_TIMER("encode line")} |
| } |
| } |
| |
| static void encode_rgb_frame(FFV1Context *s, uint32_t *src, int w, int h, int stride){ |
| int x, y, p, i; |
| const int ring_size= s->avctx->context_model ? 3 : 2; |
| int16_t *sample[4][3]; |
| s->run_index=0; |
| |
| memset(s->sample_buffer, 0, ring_size*4*(w+6)*sizeof(*s->sample_buffer)); |
| |
| for(y=0; y<h; y++){ |
| for(i=0; i<ring_size; i++) |
| for(p=0; p<4; p++) |
| sample[p][i]= s->sample_buffer + p*ring_size*(w+6) + ((h+i-y)%ring_size)*(w+6) + 3; |
| |
| for(x=0; x<w; x++){ |
| unsigned v= src[x + stride*y]; |
| int b= v&0xFF; |
| int g= (v>>8)&0xFF; |
| int r= (v>>16)&0xFF; |
| int a= v>>24; |
| |
| b -= g; |
| r -= g; |
| g += (b + r)>>2; |
| b += 0x100; |
| r += 0x100; |
| |
| // assert(g>=0 && b>=0 && r>=0); |
| // assert(g<256 && b<512 && r<512); |
| sample[0][0][x]= g; |
| sample[1][0][x]= b; |
| sample[2][0][x]= r; |
| sample[3][0][x]= a; |
| } |
| for(p=0; p<3 + s->transparency; p++){ |
| sample[p][0][-1]= sample[p][1][0 ]; |
| sample[p][1][ w]= sample[p][1][w-1]; |
| encode_line(s, w, sample[p], (p+1)/2, 9); |
| } |
| } |
| } |
| |
| static void write_quant_table(RangeCoder *c, int16_t *quant_table){ |
| int last=0; |
| int i; |
| uint8_t state[CONTEXT_SIZE]; |
| memset(state, 128, sizeof(state)); |
| |
| for(i=1; i<128 ; i++){ |
| if(quant_table[i] != quant_table[i-1]){ |
| put_symbol(c, state, i-last-1, 0); |
| last= i; |
| } |
| } |
| put_symbol(c, state, i-last-1, 0); |
| } |
| |
| static void write_quant_tables(RangeCoder *c, int16_t quant_table[MAX_CONTEXT_INPUTS][256]){ |
| int i; |
| for(i=0; i<5; i++) |
| write_quant_table(c, quant_table[i]); |
| } |
| |
| static void write_header(FFV1Context *f){ |
| uint8_t state[CONTEXT_SIZE]; |
| int i, j; |
| RangeCoder * const c= &f->slice_context[0]->c; |
| |
| memset(state, 128, sizeof(state)); |
| |
| if(f->version < 2){ |
| put_symbol(c, state, f->version, 0); |
| put_symbol(c, state, f->ac, 0); |
| if(f->ac>1){ |
| for(i=1; i<256; i++){ |
| put_symbol(c, state, f->state_transition[i] - c->one_state[i], 1); |
| } |
| } |
| put_symbol(c, state, f->colorspace, 0); //YUV cs type |
| if(f->version>0) |
| put_symbol(c, state, f->avctx->bits_per_raw_sample, 0); |
| put_rac(c, state, 1); //chroma planes |
| put_symbol(c, state, f->chroma_h_shift, 0); |
| put_symbol(c, state, f->chroma_v_shift, 0); |
| put_rac(c, state, f->transparency); |
| |
| write_quant_tables(c, f->quant_table); |
| }else{ |
| put_symbol(c, state, f->slice_count, 0); |
| for(i=0; i<f->slice_count; i++){ |
| FFV1Context *fs= f->slice_context[i]; |
| put_symbol(c, state, (fs->slice_x +1)*f->num_h_slices / f->width , 0); |
| put_symbol(c, state, (fs->slice_y +1)*f->num_v_slices / f->height , 0); |
| put_symbol(c, state, (fs->slice_width +1)*f->num_h_slices / f->width -1, 0); |
| put_symbol(c, state, (fs->slice_height+1)*f->num_v_slices / f->height-1, 0); |
| for(j=0; j<f->plane_count; j++){ |
| put_symbol(c, state, f->plane[j].quant_table_index, 0); |
| av_assert0(f->plane[j].quant_table_index == f->avctx->context_model); |
| } |
| } |
| } |
| } |
| #endif /* CONFIG_FFV1_ENCODER */ |
| |
| static av_cold int common_init(AVCodecContext *avctx){ |
| FFV1Context *s = avctx->priv_data; |
| |
| s->avctx= avctx; |
| s->flags= avctx->flags; |
| |
| avcodec_get_frame_defaults(&s->picture); |
| |
| dsputil_init(&s->dsp, avctx); |
| |
| s->width = avctx->width; |
| s->height= avctx->height; |
| |
| assert(s->width && s->height); |
| //defaults |
| s->num_h_slices=1; |
| s->num_v_slices=1; |
| |
| |
| return 0; |
| } |
| |
| static int init_slice_state(FFV1Context *f){ |
| int i, j; |
| |
| for(i=0; i<f->slice_count; i++){ |
| FFV1Context *fs= f->slice_context[i]; |
| fs->plane_count= f->plane_count; |
| fs->transparency= f->transparency; |
| for(j=0; j<f->plane_count; j++){ |
| PlaneContext * const p= &fs->plane[j]; |
| |
| if(fs->ac){ |
| if(!p-> state) p-> state= av_malloc(CONTEXT_SIZE*p->context_count*sizeof(uint8_t)); |
| if(!p-> state) |
| return AVERROR(ENOMEM); |
| }else{ |
| if(!p->vlc_state) p->vlc_state= av_malloc(p->context_count*sizeof(VlcState)); |
| if(!p->vlc_state) |
| return AVERROR(ENOMEM); |
| } |
| } |
| |
| if (fs->ac>1){ |
| //FIXME only redo if state_transition changed |
| for(j=1; j<256; j++){ |
| fs->c.one_state [ j]= fs->state_transition[j]; |
| fs->c.zero_state[256-j]= 256-fs->c.one_state [j]; |
| } |
| } |
| } |
| |
| return 0; |
| } |
| |
| static av_cold int init_slice_contexts(FFV1Context *f){ |
| int i; |
| |
| f->slice_count= f->num_h_slices * f->num_v_slices; |
| |
| for(i=0; i<f->slice_count; i++){ |
| FFV1Context *fs= av_mallocz(sizeof(*fs)); |
| int sx= i % f->num_h_slices; |
| int sy= i / f->num_h_slices; |
| int sxs= f->avctx->width * sx / f->num_h_slices; |
| int sxe= f->avctx->width *(sx+1) / f->num_h_slices; |
| int sys= f->avctx->height* sy / f->num_v_slices; |
| int sye= f->avctx->height*(sy+1) / f->num_v_slices; |
| f->slice_context[i]= fs; |
| memcpy(fs, f, sizeof(*fs)); |
| memset(fs->rc_stat2, 0, sizeof(fs->rc_stat2)); |
| |
| fs->slice_width = sxe - sxs; |
| fs->slice_height= sye - sys; |
| fs->slice_x = sxs; |
| fs->slice_y = sys; |
| |
| fs->sample_buffer = av_malloc(3*4 * (fs->width+6) * sizeof(*fs->sample_buffer)); |
| if (!fs->sample_buffer) |
| return AVERROR(ENOMEM); |
| } |
| return 0; |
| } |
| |
| static int allocate_initial_states(FFV1Context *f){ |
| int i; |
| |
| for(i=0; i<f->quant_table_count; i++){ |
| f->initial_states[i]= av_malloc(f->context_count[i]*sizeof(*f->initial_states[i])); |
| if(!f->initial_states[i]) |
| return AVERROR(ENOMEM); |
| memset(f->initial_states[i], 128, f->context_count[i]*sizeof(*f->initial_states[i])); |
| } |
| return 0; |
| } |
| |
| #if CONFIG_FFV1_ENCODER |
| static int write_extra_header(FFV1Context *f){ |
| RangeCoder * const c= &f->c; |
| uint8_t state[CONTEXT_SIZE]; |
| int i, j, k; |
| uint8_t state2[32][CONTEXT_SIZE]; |
| |
| memset(state2, 128, sizeof(state2)); |
| memset(state, 128, sizeof(state)); |
| |
| f->avctx->extradata= av_malloc(f->avctx->extradata_size= 10000 + (11*11*5*5*5+11*11*11)*32); |
| ff_init_range_encoder(c, f->avctx->extradata, f->avctx->extradata_size); |
| ff_build_rac_states(c, 0.05*(1LL<<32), 256-8); |
| |
| put_symbol(c, state, f->version, 0); |
| put_symbol(c, state, f->ac, 0); |
| if(f->ac>1){ |
| for(i=1; i<256; i++){ |
| put_symbol(c, state, f->state_transition[i] - c->one_state[i], 1); |
| } |
| } |
| put_symbol(c, state, f->colorspace, 0); //YUV cs type |
| put_symbol(c, state, f->avctx->bits_per_raw_sample, 0); |
| put_rac(c, state, 1); //chroma planes |
| put_symbol(c, state, f->chroma_h_shift, 0); |
| put_symbol(c, state, f->chroma_v_shift, 0); |
| put_rac(c, state, f->transparency); |
| put_symbol(c, state, f->num_h_slices-1, 0); |
| put_symbol(c, state, f->num_v_slices-1, 0); |
| |
| put_symbol(c, state, f->quant_table_count, 0); |
| for(i=0; i<f->quant_table_count; i++) |
| write_quant_tables(c, f->quant_tables[i]); |
| |
| for(i=0; i<f->quant_table_count; i++){ |
| for(j=0; j<f->context_count[i]*CONTEXT_SIZE; j++) |
| if(f->initial_states[i] && f->initial_states[i][0][j] != 128) |
| break; |
| if(j<f->context_count[i]*CONTEXT_SIZE){ |
| put_rac(c, state, 1); |
| for(j=0; j<f->context_count[i]; j++){ |
| for(k=0; k<CONTEXT_SIZE; k++){ |
| int pred= j ? f->initial_states[i][j-1][k] : 128; |
| put_symbol(c, state2[k], (int8_t)(f->initial_states[i][j][k]-pred), 1); |
| } |
| } |
| }else{ |
| put_rac(c, state, 0); |
| } |
| } |
| |
| f->avctx->extradata_size= ff_rac_terminate(c); |
| |
| return 0; |
| } |
| |
| static int sort_stt(FFV1Context *s, uint8_t stt[256]){ |
| int i,i2,changed,print=0; |
| |
| do{ |
| changed=0; |
| for(i=12; i<244; i++){ |
| for(i2=i+1; i2<245 && i2<i+4; i2++){ |
| #define COST(old, new) \ |
| s->rc_stat[old][0]*-log2((256-(new))/256.0)\ |
| +s->rc_stat[old][1]*-log2( (new) /256.0) |
| |
| #define COST2(old, new) \ |
| COST(old, new)\ |
| +COST(256-(old), 256-(new)) |
| |
| double size0= COST2(i, i ) + COST2(i2, i2); |
| double sizeX= COST2(i, i2) + COST2(i2, i ); |
| if(sizeX < size0 && i!=128 && i2!=128){ |
| int j; |
| FFSWAP(int, stt[ i], stt[ i2]); |
| FFSWAP(int, s->rc_stat[i ][0],s->rc_stat[ i2][0]); |
| FFSWAP(int, s->rc_stat[i ][1],s->rc_stat[ i2][1]); |
| if(i != 256-i2){ |
| FFSWAP(int, stt[256-i], stt[256-i2]); |
| FFSWAP(int, s->rc_stat[256-i][0],s->rc_stat[256-i2][0]); |
| FFSWAP(int, s->rc_stat[256-i][1],s->rc_stat[256-i2][1]); |
| } |
| for(j=1; j<256; j++){ |
| if (stt[j] == i ) stt[j] = i2; |
| else if(stt[j] == i2) stt[j] = i ; |
| if(i != 256-i2){ |
| if (stt[256-j] == 256-i ) stt[256-j] = 256-i2; |
| else if(stt[256-j] == 256-i2) stt[256-j] = 256-i ; |
| } |
| } |
| print=changed=1; |
| } |
| } |
| } |
| }while(changed); |
| return print; |
| } |
| |
| static av_cold int encode_init(AVCodecContext *avctx) |
| { |
| FFV1Context *s = avctx->priv_data; |
| int i, j, k, m; |
| |
| common_init(avctx); |
| |
| s->version=0; |
| s->ac= avctx->coder_type ? 2:0; |
| |
| if(s->ac>1) |
| for(i=1; i<256; i++) |
| s->state_transition[i]=ver2_state[i]; |
| |
| s->plane_count=3; |
| for(i=0; i<256; i++){ |
| s->quant_table_count=2; |
| if(avctx->bits_per_raw_sample <=8){ |
| s->quant_tables[0][0][i]= quant11[i]; |
| s->quant_tables[0][1][i]= 11*quant11[i]; |
| s->quant_tables[0][2][i]= 11*11*quant11[i]; |
| s->quant_tables[1][0][i]= quant11[i]; |
| s->quant_tables[1][1][i]= 11*quant11[i]; |
| s->quant_tables[1][2][i]= 11*11*quant5 [i]; |
| s->quant_tables[1][3][i]= 5*11*11*quant5 [i]; |
| s->quant_tables[1][4][i]= 5*5*11*11*quant5 [i]; |
| }else{ |
| s->quant_tables[0][0][i]= quant9_10bit[i]; |
| s->quant_tables[0][1][i]= 11*quant9_10bit[i]; |
| s->quant_tables[0][2][i]= 11*11*quant9_10bit[i]; |
| s->quant_tables[1][0][i]= quant9_10bit[i]; |
| s->quant_tables[1][1][i]= 11*quant9_10bit[i]; |
| s->quant_tables[1][2][i]= 11*11*quant5_10bit[i]; |
| s->quant_tables[1][3][i]= 5*11*11*quant5_10bit[i]; |
| s->quant_tables[1][4][i]= 5*5*11*11*quant5_10bit[i]; |
| } |
| } |
| s->context_count[0]= (11*11*11+1)/2; |
| s->context_count[1]= (11*11*5*5*5+1)/2; |
| memcpy(s->quant_table, s->quant_tables[avctx->context_model], sizeof(s->quant_table)); |
| |
| for(i=0; i<s->plane_count; i++){ |
| PlaneContext * const p= &s->plane[i]; |
| |
| memcpy(p->quant_table, s->quant_table, sizeof(p->quant_table)); |
| p->quant_table_index= avctx->context_model; |
| p->context_count= s->context_count[p->quant_table_index]; |
| } |
| |
| if(allocate_initial_states(s) < 0) |
| return AVERROR(ENOMEM); |
| |
| avctx->coded_frame= &s->picture; |
| switch(avctx->pix_fmt){ |
| case PIX_FMT_YUV420P9: |
| case PIX_FMT_YUV420P10: |
| case PIX_FMT_YUV422P10: |
| s->packed_at_lsb = 1; |
| case PIX_FMT_YUV444P16: |
| case PIX_FMT_YUV422P16: |
| case PIX_FMT_YUV420P16: |
| if(avctx->bits_per_raw_sample <=8){ |
| av_log(avctx, AV_LOG_ERROR, "bits_per_raw_sample invalid\n"); |
| return -1; |
| } |
| if(!s->ac){ |
| av_log(avctx, AV_LOG_ERROR, "bits_per_raw_sample of more than 8 needs -coder 1 currently\n"); |
| return -1; |
| } |
| s->version= FFMAX(s->version, 1); |
| case PIX_FMT_YUV444P: |
| case PIX_FMT_YUV422P: |
| case PIX_FMT_YUV420P: |
| case PIX_FMT_YUV411P: |
| case PIX_FMT_YUV410P: |
| s->colorspace= 0; |
| break; |
| case PIX_FMT_RGB32: |
| s->colorspace= 1; |
| s->transparency= 1; |
| break; |
| case PIX_FMT_0RGB32: |
| s->colorspace= 1; |
| break; |
| default: |
| av_log(avctx, AV_LOG_ERROR, "format not supported\n"); |
| return -1; |
| } |
| if(!s->transparency) |
| s->plane_count= 2; |
| avcodec_get_chroma_sub_sample(avctx->pix_fmt, &s->chroma_h_shift, &s->chroma_v_shift); |
| |
| s->picture_number=0; |
| |
| if(avctx->flags & (CODEC_FLAG_PASS1|CODEC_FLAG_PASS2)){ |
| for(i=0; i<s->quant_table_count; i++){ |
| s->rc_stat2[i]= av_mallocz(s->context_count[i]*sizeof(*s->rc_stat2[i])); |
| if(!s->rc_stat2[i]) |
| return AVERROR(ENOMEM); |
| } |
| } |
| if(avctx->stats_in){ |
| char *p= avctx->stats_in; |
| uint8_t best_state[256][256]; |
| int gob_count=0; |
| char *next; |
| |
| av_assert0(s->version>=2); |
| |
| for(;;){ |
| for(j=0; j<256; j++){ |
| for(i=0; i<2; i++){ |
| s->rc_stat[j][i]= strtol(p, &next, 0); |
| if(next==p){ |
| av_log(avctx, AV_LOG_ERROR, "2Pass file invalid at %d %d [%s]\n", j,i,p); |
| return -1; |
| } |
| p=next; |
| } |
| } |
| for(i=0; i<s->quant_table_count; i++){ |
| for(j=0; j<s->context_count[i]; j++){ |
| for(k=0; k<32; k++){ |
| for(m=0; m<2; m++){ |
| s->rc_stat2[i][j][k][m]= strtol(p, &next, 0); |
| if(next==p){ |
| av_log(avctx, AV_LOG_ERROR, "2Pass file invalid at %d %d %d %d [%s]\n", i,j,k,m,p); |
| return -1; |
| } |
| p=next; |
| } |
| } |
| } |
| } |
| gob_count= strtol(p, &next, 0); |
| if(next==p || gob_count <=0){ |
| av_log(avctx, AV_LOG_ERROR, "2Pass file invalid\n"); |
| return -1; |
| } |
| p=next; |
| while(*p=='\n' || *p==' ') p++; |
| if(p[0]==0) break; |
| } |
| sort_stt(s, s->state_transition); |
| |
| find_best_state(best_state, s->state_transition); |
| |
| for(i=0; i<s->quant_table_count; i++){ |
| for(j=0; j<s->context_count[i]; j++){ |
| for(k=0; k<32; k++){ |
| double p= 128; |
| if(s->rc_stat2[i][j][k][0]+s->rc_stat2[i][j][k][1]){ |
| p=256.0*s->rc_stat2[i][j][k][1] / (s->rc_stat2[i][j][k][0]+s->rc_stat2[i][j][k][1]); |
| } |
| s->initial_states[i][j][k]= best_state[av_clip(round(p), 1, 255)][av_clip((s->rc_stat2[i][j][k][0]+s->rc_stat2[i][j][k][1])/gob_count, 0, 255)]; |
| } |
| } |
| } |
| } |
| |
| if(s->version>1){ |
| s->num_h_slices=2; |
| s->num_v_slices=2; |
| write_extra_header(s); |
| } |
| |
| if(init_slice_contexts(s) < 0) |
| return -1; |
| if(init_slice_state(s) < 0) |
| return -1; |
| |
| #define STATS_OUT_SIZE 1024*1024*6 |
| if(avctx->flags & CODEC_FLAG_PASS1){ |
| avctx->stats_out= av_mallocz(STATS_OUT_SIZE); |
| for(i=0; i<s->quant_table_count; i++){ |
| for(j=0; j<s->slice_count; j++){ |
| FFV1Context *sf= s->slice_context[j]; |
| av_assert0(!sf->rc_stat2[i]); |
| sf->rc_stat2[i]= av_mallocz(s->context_count[i]*sizeof(*sf->rc_stat2[i])); |
| if(!sf->rc_stat2[i]) |
| return AVERROR(ENOMEM); |
| } |
| } |
| } |
| |
| return 0; |
| } |
| #endif /* CONFIG_FFV1_ENCODER */ |
| |
| |
| static void clear_state(FFV1Context *f){ |
| int i, si, j; |
| |
| for(si=0; si<f->slice_count; si++){ |
| FFV1Context *fs= f->slice_context[si]; |
| for(i=0; i<f->plane_count; i++){ |
| PlaneContext *p= &fs->plane[i]; |
| |
| p->interlace_bit_state[0]= 128; |
| p->interlace_bit_state[1]= 128; |
| |
| if(fs->ac){ |
| if(f->initial_states[p->quant_table_index]){ |
| memcpy(p->state, f->initial_states[p->quant_table_index], CONTEXT_SIZE*p->context_count); |
| }else |
| memset(p->state, 128, CONTEXT_SIZE*p->context_count); |
| }else{ |
| for(j=0; j<p->context_count; j++){ |
| 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; |
| } |
| } |
| } |
| } |
| } |
| |
| #if CONFIG_FFV1_ENCODER |
| static int encode_slice(AVCodecContext *c, void *arg){ |
| FFV1Context *fs= *(void**)arg; |
| FFV1Context *f= fs->avctx->priv_data; |
| int width = fs->slice_width; |
| int height= fs->slice_height; |
| int x= fs->slice_x; |
| int y= fs->slice_y; |
| AVFrame * const p= &f->picture; |
| const int ps= (c->bits_per_raw_sample>8)+1; |
| |
| if(f->colorspace==0){ |
| const int chroma_width = -((-width )>>f->chroma_h_shift); |
| const int chroma_height= -((-height)>>f->chroma_v_shift); |
| const int cx= x>>f->chroma_h_shift; |
| const int cy= y>>f->chroma_v_shift; |
| |
| encode_plane(fs, p->data[0] + ps*x + y*p->linesize[0], width, height, p->linesize[0], 0); |
| |
| encode_plane(fs, p->data[1] + ps*cx+cy*p->linesize[1], chroma_width, chroma_height, p->linesize[1], 1); |
| encode_plane(fs, p->data[2] + ps*cx+cy*p->linesize[2], chroma_width, chroma_height, p->linesize[2], 1); |
| }else{ |
| encode_rgb_frame(fs, (uint32_t*)(p->data[0]) + ps*x + y*(p->linesize[0]/4), width, height, p->linesize[0]/4); |
| } |
| emms_c(); |
| |
| return 0; |
| } |
| |
| static int encode_frame(AVCodecContext *avctx, unsigned char *buf, int buf_size, void *data){ |
| FFV1Context *f = avctx->priv_data; |
| RangeCoder * const c= &f->slice_context[0]->c; |
| AVFrame *pict = data; |
| AVFrame * const p= &f->picture; |
| int used_count= 0; |
| uint8_t keystate=128; |
| uint8_t *buf_p; |
| int i; |
| |
| ff_init_range_encoder(c, buf, buf_size); |
| ff_build_rac_states(c, 0.05*(1LL<<32), 256-8); |
| |
| *p = *pict; |
| p->pict_type= AV_PICTURE_TYPE_I; |
| |
| if(avctx->gop_size==0 || f->picture_number % avctx->gop_size == 0){ |
| put_rac(c, &keystate, 1); |
| p->key_frame= 1; |
| f->gob_count++; |
| write_header(f); |
| clear_state(f); |
| }else{ |
| put_rac(c, &keystate, 0); |
| p->key_frame= 0; |
| } |
| |
| if(!f->ac){ |
| used_count += ff_rac_terminate(c); |
| //printf("pos=%d\n", used_count); |
| init_put_bits(&f->slice_context[0]->pb, buf + used_count, buf_size - used_count); |
| }else if (f->ac>1){ |
| int i; |
| for(i=1; i<256; i++){ |
| c->one_state[i]= f->state_transition[i]; |
| c->zero_state[256-i]= 256-c->one_state[i]; |
| } |
| } |
| |
| for(i=1; i<f->slice_count; i++){ |
| FFV1Context *fs= f->slice_context[i]; |
| uint8_t *start= buf + (buf_size-used_count)*i/f->slice_count; |
| int len= buf_size/f->slice_count; |
| |
| if(fs->ac){ |
| ff_init_range_encoder(&fs->c, start, len); |
| }else{ |
| init_put_bits(&fs->pb, start, len); |
| } |
| } |
| avctx->execute(avctx, encode_slice, &f->slice_context[0], NULL, f->slice_count, sizeof(void*)); |
| |
| buf_p=buf; |
| for(i=0; i<f->slice_count; i++){ |
| FFV1Context *fs= f->slice_context[i]; |
| int bytes; |
| |
| if(fs->ac){ |
| uint8_t state=128; |
| put_rac(&fs->c, &state, 0); |
| bytes= ff_rac_terminate(&fs->c); |
| }else{ |
| flush_put_bits(&fs->pb); //nicer padding FIXME |
| bytes= used_count + (put_bits_count(&fs->pb)+7)/8; |
| used_count= 0; |
| } |
| if(i>0){ |
| av_assert0(bytes < buf_size/f->slice_count); |
| memmove(buf_p, fs->ac ? fs->c.bytestream_start : fs->pb.buf, bytes); |
| av_assert0(bytes < (1<<24)); |
| AV_WB24(buf_p+bytes, bytes); |
| bytes+=3; |
| } |
| buf_p += bytes; |
| } |
| |
| if((avctx->flags&CODEC_FLAG_PASS1) && (f->picture_number&31)==0){ |
| int j, k, m; |
| char *p= avctx->stats_out; |
| char *end= p + STATS_OUT_SIZE; |
| |
| memset(f->rc_stat, 0, sizeof(f->rc_stat)); |
| for(i=0; i<f->quant_table_count; i++) |
| memset(f->rc_stat2[i], 0, f->context_count[i]*sizeof(*f->rc_stat2[i])); |
| |
| for(j=0; j<f->slice_count; j++){ |
| FFV1Context *fs= f->slice_context[j]; |
| for(i=0; i<256; i++){ |
| f->rc_stat[i][0] += fs->rc_stat[i][0]; |
| f->rc_stat[i][1] += fs->rc_stat[i][1]; |
| } |
| for(i=0; i<f->quant_table_count; i++){ |
| for(k=0; k<f->context_count[i]; k++){ |
| for(m=0; m<32; m++){ |
| f->rc_stat2[i][k][m][0] += fs->rc_stat2[i][k][m][0]; |
| f->rc_stat2[i][k][m][1] += fs->rc_stat2[i][k][m][1]; |
| } |
| } |
| } |
| } |
| |
| for(j=0; j<256; j++){ |
| snprintf(p, end-p, "%"PRIu64" %"PRIu64" ", f->rc_stat[j][0], f->rc_stat[j][1]); |
| p+= strlen(p); |
| } |
| snprintf(p, end-p, "\n"); |
| |
| for(i=0; i<f->quant_table_count; i++){ |
| for(j=0; j<f->context_count[i]; j++){ |
| for(m=0; m<32; m++){ |
| snprintf(p, end-p, "%"PRIu64" %"PRIu64" ", f->rc_stat2[i][j][m][0], f->rc_stat2[i][j][m][1]); |
| p+= strlen(p); |
| } |
| } |
| } |
| snprintf(p, end-p, "%d\n", f->gob_count); |
| } else if(avctx->flags&CODEC_FLAG_PASS1) |
| avctx->stats_out[0] = '\0'; |
| |
| f->picture_number++; |
| return buf_p-buf; |
| } |
| #endif /* CONFIG_FFV1_ENCODER */ |
| |
| static av_cold int common_end(AVCodecContext *avctx){ |
| FFV1Context *s = avctx->priv_data; |
| int i, j; |
| |
| if (avctx->codec->decode && s->picture.data[0]) |
| avctx->release_buffer(avctx, &s->picture); |
| |
| for(j=0; j<s->slice_count; j++){ |
| FFV1Context *fs= s->slice_context[j]; |
| for(i=0; i<s->plane_count; i++){ |
| PlaneContext *p= &fs->plane[i]; |
| |
| av_freep(&p->state); |
| av_freep(&p->vlc_state); |
| } |
| av_freep(&fs->sample_buffer); |
| } |
| |
| av_freep(&avctx->stats_out); |
| for(j=0; j<s->quant_table_count; j++){ |
| av_freep(&s->initial_states[j]); |
| for(i=0; i<s->slice_count; i++){ |
| FFV1Context *sf= s->slice_context[i]; |
| av_freep(&sf->rc_stat2[j]); |
| } |
| av_freep(&s->rc_stat2[j]); |
| } |
| |
| for(i=0; i<s->slice_count; i++){ |
| av_freep(&s->slice_context[i]); |
| } |
| |
| return 0; |
| } |
| |
| static av_always_inline void decode_line(FFV1Context *s, int w, |
| int16_t *sample[2], |
| int plane_index, int bits) |
| { |
| PlaneContext * const p= &s->plane[plane_index]; |
| RangeCoder * const c= &s->c; |
| int x; |
| int run_count=0; |
| int run_mode=0; |
| int run_index= s->run_index; |
| |
| for(x=0; x<w; x++){ |
| int diff, context, sign; |
| |
| context= get_context(p, sample[1] + x, sample[0] + x, sample[1] + x); |
| if(context < 0){ |
| context= -context; |
| sign=1; |
| }else |
| sign=0; |
| |
| av_assert2(context < p->context_count); |
| |
| if(s->ac){ |
| diff= get_symbol_inline(c, p->state[context], 1); |
| }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<<ff_log2_run[run_index]; |
| if(x + run_count <= w) run_index++; |
| }else{ |
| if(ff_log2_run[run_index]) run_count = get_bits(&s->gb, ff_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], bits); |
| if(diff>=0) diff++; |
| }else |
| diff=0; |
| }else |
| diff= get_vlc_symbol(&s->gb, &p->vlc_state[context], bits); |
| |
| // 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= -diff; |
| |
| sample[1][x]= (predict(sample[1] + x, sample[0] + x) + diff) & ((1<<bits)-1); |
| } |
| s->run_index= run_index; |
| } |
| |
| static void decode_plane(FFV1Context *s, uint8_t *src, int w, int h, int stride, int plane_index){ |
| int x, y; |
| int16_t *sample[2]; |
| sample[0]=s->sample_buffer +3; |
| sample[1]=s->sample_buffer+w+6+3; |
| |
| s->run_index=0; |
| |
| memset(s->sample_buffer, 0, 2*(w+6)*sizeof(*s->sample_buffer)); |
| |
| for(y=0; y<h; y++){ |
| int16_t *temp = sample[0]; //FIXME try a normal buffer |
| |
| sample[0]= sample[1]; |
| sample[1]= temp; |
| |
| sample[1][-1]= sample[0][0 ]; |
| sample[0][ w]= sample[0][w-1]; |
| |
| //{START_TIMER |
| if(s->avctx->bits_per_raw_sample <= 8){ |
| decode_line(s, w, sample, plane_index, 8); |
| for(x=0; x<w; x++){ |
| src[x + stride*y]= sample[1][x]; |
| } |
| }else{ |
| decode_line(s, w, sample, plane_index, s->avctx->bits_per_raw_sample); |
| if(s->packed_at_lsb){ |
| for(x=0; x<w; x++){ |
| ((uint16_t*)(src + stride*y))[x]= sample[1][x]; |
| } |
| }else{ |
| for(x=0; x<w; x++){ |
| ((uint16_t*)(src + stride*y))[x]= sample[1][x] << (16 - s->avctx->bits_per_raw_sample); |
| } |
| } |
| } |
| //STOP_TIMER("decode-line")} |
| } |
| } |
| |
| static void decode_rgb_frame(FFV1Context *s, uint32_t *src, int w, int h, int stride){ |
| int x, y, p; |
| int16_t *sample[4][2]; |
| for(x=0; x<4; x++){ |
| sample[x][0] = s->sample_buffer + x*2 *(w+6) + 3; |
| sample[x][1] = s->sample_buffer + (x*2+1)*(w+6) + 3; |
| } |
| |
| s->run_index=0; |
| |
| memset(s->sample_buffer, 0, 8*(w+6)*sizeof(*s->sample_buffer)); |
| |
| for(y=0; y<h; y++){ |
| for(p=0; p<3 + s->transparency; p++){ |
| int16_t *temp = sample[p][0]; //FIXME try a normal buffer |
| |
| sample[p][0]= sample[p][1]; |
| sample[p][1]= temp; |
| |
| sample[p][1][-1]= sample[p][0][0 ]; |
| sample[p][0][ w]= sample[p][0][w-1]; |
| decode_line(s, w, sample[p], (p+1)/2, 9); |
| } |
| for(x=0; x<w; x++){ |
| int g= sample[0][1][x]; |
| int b= sample[1][1][x]; |
| int r= sample[2][1][x]; |
| int a= sample[3][1][x]; |
| |
| // assert(g>=0 && b>=0 && r>=0); |
| // assert(g<256 && b<512 && r<512); |
| |
| b -= 0x100; |
| r -= 0x100; |
| g -= (b + r)>>2; |
| b += g; |
| r += g; |
| |
| src[x + stride*y]= b + (g<<8) + (r<<16) + (a<<24); |
| } |
| } |
| } |
| |
| static int decode_slice(AVCodecContext *c, void *arg){ |
| FFV1Context *fs= *(void**)arg; |
| FFV1Context *f= fs->avctx->priv_data; |
| int width = fs->slice_width; |
| int height= fs->slice_height; |
| int x= fs->slice_x; |
| int y= fs->slice_y; |
| const int ps= (c->bits_per_raw_sample>8)+1; |
| AVFrame * const p= &f->picture; |
| |
| av_assert1(width && height); |
| if(f->colorspace==0){ |
| const int chroma_width = -((-width )>>f->chroma_h_shift); |
| const int chroma_height= -((-height)>>f->chroma_v_shift); |
| const int cx= x>>f->chroma_h_shift; |
| const int cy= y>>f->chroma_v_shift; |
| decode_plane(fs, p->data[0] + ps*x + y*p->linesize[0], width, height, p->linesize[0], 0); |
| |
| decode_plane(fs, p->data[1] + ps*cx+cy*p->linesize[1], chroma_width, chroma_height, p->linesize[1], 1); |
| decode_plane(fs, p->data[2] + ps*cx+cy*p->linesize[1], chroma_width, chroma_height, p->linesize[2], 1); |
| }else{ |
| decode_rgb_frame(fs, (uint32_t*)p->data[0] + ps*x + y*(p->linesize[0]/4), width, height, p->linesize[0]/4); |
| } |
| |
| emms_c(); |
| |
| return 0; |
| } |
| |
| static int read_quant_table(RangeCoder *c, int16_t *quant_table, int scale){ |
| int v; |
| int i=0; |
| uint8_t state[CONTEXT_SIZE]; |
| |
| memset(state, 128, sizeof(state)); |
| |
| for(v=0; i<128 ; v++){ |
| int len= get_symbol(c, state, 0) + 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_quant_tables(RangeCoder *c, int16_t quant_table[MAX_CONTEXT_INPUTS][256]){ |
| int i; |
| int context_count=1; |
| |
| for(i=0; i<5; i++){ |
| context_count*= read_quant_table(c, quant_table[i], context_count); |
| if(context_count > 32768U){ |
| return -1; |
| } |
| } |
| return (context_count+1)/2; |
| } |
| |
| static int read_extra_header(FFV1Context *f){ |
| RangeCoder * const c= &f->c; |
| uint8_t state[CONTEXT_SIZE]; |
| int i, j, k; |
| uint8_t state2[32][CONTEXT_SIZE]; |
| |
| memset(state2, 128, sizeof(state2)); |
| memset(state, 128, sizeof(state)); |
| |
| ff_init_range_decoder(c, f->avctx->extradata, f->avctx->extradata_size); |
| ff_build_rac_states(c, 0.05*(1LL<<32), 256-8); |
| |
| f->version= get_symbol(c, state, 0); |
| f->ac= f->avctx->coder_type= get_symbol(c, state, 0); |
| if(f->ac>1){ |
| for(i=1; i<256; i++){ |
| f->state_transition[i]= get_symbol(c, state, 1) + c->one_state[i]; |
| } |
| } |
| f->colorspace= get_symbol(c, state, 0); //YUV cs type |
| f->avctx->bits_per_raw_sample= get_symbol(c, state, 0); |
| get_rac(c, state); //no chroma = false |
| f->chroma_h_shift= get_symbol(c, state, 0); |
| f->chroma_v_shift= get_symbol(c, state, 0); |
| f->transparency= get_rac(c, state); |
| f->plane_count= 2 + f->transparency; |
| f->num_h_slices= 1 + get_symbol(c, state, 0); |
| f->num_v_slices= 1 + get_symbol(c, state, 0); |
| if(f->num_h_slices > (unsigned)f->width || f->num_v_slices > (unsigned)f->height){ |
| av_log(f->avctx, AV_LOG_ERROR, "too many slices\n"); |
| return -1; |
| } |
| |
| f->quant_table_count= get_symbol(c, state, 0); |
| if(f->quant_table_count > (unsigned)MAX_QUANT_TABLES) |
| return -1; |
| for(i=0; i<f->quant_table_count; i++){ |
| if((f->context_count[i]= read_quant_tables(c, f->quant_tables[i])) < 0){ |
| av_log(f->avctx, AV_LOG_ERROR, "read_quant_table error\n"); |
| return -1; |
| } |
| } |
| |
| if(allocate_initial_states(f) < 0) |
| return AVERROR(ENOMEM); |
| |
| for(i=0; i<f->quant_table_count; i++){ |
| if(get_rac(c, state)){ |
| for(j=0; j<f->context_count[i]; j++){ |
| for(k=0; k<CONTEXT_SIZE; k++){ |
| int pred= j ? f->initial_states[i][j-1][k] : 128; |
| f->initial_states[i][j][k]= (pred+get_symbol(c, state2[k], 1))&0xFF; |
| } |
| } |
| } |
| } |
| |
| return 0; |
| } |
| |
| static int read_header(FFV1Context *f){ |
| uint8_t state[CONTEXT_SIZE]; |
| int i, j, context_count; |
| RangeCoder * const c= &f->slice_context[0]->c; |
| |
| memset(state, 128, sizeof(state)); |
| |
| if(f->version < 2){ |
| f->version= get_symbol(c, state, 0); |
| f->ac= f->avctx->coder_type= get_symbol(c, state, 0); |
| if(f->ac>1){ |
| for(i=1; i<256; i++){ |
| f->state_transition[i]= get_symbol(c, state, 1) + c->one_state[i]; |
| } |
| } |
| f->colorspace= get_symbol(c, state, 0); //YUV cs type |
| if(f->version>0) |
| f->avctx->bits_per_raw_sample= get_symbol(c, state, 0); |
| get_rac(c, state); //no chroma = false |
| f->chroma_h_shift= get_symbol(c, state, 0); |
| f->chroma_v_shift= get_symbol(c, state, 0); |
| f->transparency= get_rac(c, state); |
| f->plane_count= 2 + f->transparency; |
| } |
| |
| if(f->colorspace==0){ |
| if(f->avctx->bits_per_raw_sample<=8){ |
| 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 0x22: f->avctx->pix_fmt= PIX_FMT_YUV410P; break; |
| default: |
| av_log(f->avctx, AV_LOG_ERROR, "format not supported\n"); |
| return -1; |
| } |
| }else if(f->avctx->bits_per_raw_sample==9) { |
| switch(16*f->chroma_h_shift + f->chroma_v_shift){ |
| case 0x00: f->avctx->pix_fmt= PIX_FMT_YUV444P16; break; |
| case 0x10: f->avctx->pix_fmt= PIX_FMT_YUV422P16; break; |
| case 0x11: f->avctx->pix_fmt= PIX_FMT_YUV420P9 ; f->packed_at_lsb=1; break; |
| default: |
| av_log(f->avctx, AV_LOG_ERROR, "format not supported\n"); |
| return -1; |
| } |
| }else if(f->avctx->bits_per_raw_sample==10) { |
| switch(16*f->chroma_h_shift + f->chroma_v_shift){ |
| case 0x00: f->avctx->pix_fmt= PIX_FMT_YUV444P16; break; |
| case 0x10: f->avctx->pix_fmt= PIX_FMT_YUV422P10; f->packed_at_lsb=1; break; |
| case 0x11: f->avctx->pix_fmt= PIX_FMT_YUV420P10; f->packed_at_lsb=1; break; |
| default: |
| av_log(f->avctx, AV_LOG_ERROR, "format not supported\n"); |
| return -1; |
| } |
| }else { |
| switch(16*f->chroma_h_shift + f->chroma_v_shift){ |
| case 0x00: f->avctx->pix_fmt= PIX_FMT_YUV444P16; break; |
| case 0x10: f->avctx->pix_fmt= PIX_FMT_YUV422P16; break; |
| case 0x11: f->avctx->pix_fmt= PIX_FMT_YUV420P16; break; |
| default: |
| av_log(f->avctx, AV_LOG_ERROR, "format not supported\n"); |
| return -1; |
| } |
| } |
| }else if(f->colorspace==1){ |
| if(f->chroma_h_shift || f->chroma_v_shift){ |
| av_log(f->avctx, AV_LOG_ERROR, "chroma subsampling not supported in this colorspace\n"); |
| return -1; |
| } |
| if(f->transparency) f->avctx->pix_fmt= PIX_FMT_RGB32; |
| else f->avctx->pix_fmt= PIX_FMT_0RGB32; |
| }else{ |
| av_log(f->avctx, AV_LOG_ERROR, "colorspace not supported\n"); |
| return -1; |
| } |
| |
| //printf("%d %d %d\n", f->chroma_h_shift, f->chroma_v_shift,f->avctx->pix_fmt); |
| if(f->version < 2){ |
| context_count= read_quant_tables(c, f->quant_table); |
| if(context_count < 0){ |
| av_log(f->avctx, AV_LOG_ERROR, "read_quant_table error\n"); |
| return -1; |
| } |
| }else{ |
| f->slice_count= get_symbol(c, state, 0); |
| if(f->slice_count > (unsigned)MAX_SLICES) |
| return -1; |
| } |
| |
| for(j=0; j<f->slice_count; j++){ |
| FFV1Context *fs= f->slice_context[j]; |
| fs->ac= f->ac; |
| fs->packed_at_lsb= f->packed_at_lsb; |
| |
| if(f->version >= 2){ |
| fs->slice_x = get_symbol(c, state, 0) *f->width ; |
| fs->slice_y = get_symbol(c, state, 0) *f->height; |
| fs->slice_width =(get_symbol(c, state, 0)+1)*f->width + fs->slice_x; |
| fs->slice_height=(get_symbol(c, state, 0)+1)*f->height + fs->slice_y; |
| |
| fs->slice_x /= f->num_h_slices; |
| fs->slice_y /= f->num_v_slices; |
| fs->slice_width = fs->slice_width /f->num_h_slices - fs->slice_x; |
| fs->slice_height = fs->slice_height/f->num_v_slices - fs->slice_y; |
| if((unsigned)fs->slice_width > f->width || (unsigned)fs->slice_height > f->height) |
| return -1; |
| if( (unsigned)fs->slice_x + (uint64_t)fs->slice_width > f->width |
| || (unsigned)fs->slice_y + (uint64_t)fs->slice_height > f->height) |
| return -1; |
| } |
| |
| for(i=0; i<f->plane_count; i++){ |
| PlaneContext * const p= &fs->plane[i]; |
| |
| if(f->version >= 2){ |
| int idx=get_symbol(c, state, 0); |
| if(idx > (unsigned)f->quant_table_count){ |
| av_log(f->avctx, AV_LOG_ERROR, "quant_table_index out of range\n"); |
| return -1; |
| } |
| p->quant_table_index= idx; |
| memcpy(p->quant_table, f->quant_tables[idx], sizeof(p->quant_table)); |
| context_count= f->context_count[idx]; |
| }else{ |
| memcpy(p->quant_table, f->quant_table, sizeof(p->quant_table)); |
| } |
| |
| if(p->context_count < context_count){ |
| av_freep(&p->state); |
| av_freep(&p->vlc_state); |
| } |
| p->context_count= context_count; |
| } |
| } |
| |
| return 0; |
| } |
| |
| static av_cold int decode_init(AVCodecContext *avctx) |
| { |
| FFV1Context *f = avctx->priv_data; |
| |
| common_init(avctx); |
| |
| if(avctx->extradata && read_extra_header(f) < 0) |
| return -1; |
| |
| if(init_slice_contexts(f) < 0) |
| return -1; |
| |
| return 0; |
| } |
| |
| static int decode_frame(AVCodecContext *avctx, void *data, int *data_size, AVPacket *avpkt){ |
| const uint8_t *buf = avpkt->data; |
| int buf_size = avpkt->size; |
| FFV1Context *f = avctx->priv_data; |
| RangeCoder * const c= &f->slice_context[0]->c; |
| AVFrame * const p= &f->picture; |
| int bytes_read, i; |
| uint8_t keystate= 128; |
| const uint8_t *buf_p; |
| |
| AVFrame *picture = data; |
| |
| /* release previously stored data */ |
| if (p->data[0]) |
| avctx->release_buffer(avctx, p); |
| |
| ff_init_range_decoder(c, buf, buf_size); |
| ff_build_rac_states(c, 0.05*(1LL<<32), 256-8); |
| |
| |
| p->pict_type= AV_PICTURE_TYPE_I; //FIXME I vs. P |
| if(get_rac(c, &keystate)){ |
| p->key_frame= 1; |
| if(read_header(f) < 0) |
| return -1; |
| if(init_slice_state(f) < 0) |
| return -1; |
| |
| clear_state(f); |
| }else{ |
| p->key_frame= 0; |
| } |
| if(f->ac>1){ |
| int i; |
| for(i=1; i<256; i++){ |
| c->one_state[i]= f->state_transition[i]; |
| c->zero_state[256-i]= 256-c->one_state[i]; |
| } |
| } |
| |
| p->reference= 0; |
| if(avctx->get_buffer(avctx, p) < 0){ |
| av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n"); |
| return -1; |
| } |
| |
| if(avctx->debug&FF_DEBUG_PICT_INFO) |
| av_log(avctx, AV_LOG_ERROR, "keyframe:%d coder:%d\n", p->key_frame, f->ac); |
| |
| if(!f->ac){ |
| bytes_read = c->bytestream - c->bytestream_start - 1; |
| if(bytes_read ==0) av_log(avctx, AV_LOG_ERROR, "error at end of AC stream\n"); //FIXME |
| //printf("pos=%d\n", bytes_read); |
| init_get_bits(&f->slice_context[0]->gb, buf + bytes_read, (buf_size - bytes_read) * 8); |
| } else { |
| bytes_read = 0; /* avoid warning */ |
| } |
| |
| buf_p= buf + buf_size; |
| for(i=f->slice_count-1; i>0; i--){ |
| FFV1Context *fs= f->slice_context[i]; |
| int v= AV_RB24(buf_p-3)+3; |
| if(buf_p - buf <= v){ |
| av_log(avctx, AV_LOG_ERROR, "Slice pointer chain broken\n"); |
| return -1; |
| } |
| buf_p -= v; |
| if(fs->ac){ |
| ff_init_range_decoder(&fs->c, buf_p, v); |
| }else{ |
| init_get_bits(&fs->gb, buf_p, v * 8); |
| } |
| } |
| |
| avctx->execute(avctx, decode_slice, &f->slice_context[0], NULL, f->slice_count, sizeof(void*)); |
| f->picture_number++; |
| |
| *picture= *p; |
| *data_size = sizeof(AVFrame); |
| |
| return buf_size; |
| } |
| |
| AVCodec ff_ffv1_decoder = { |
| .name = "ffv1", |
| .type = AVMEDIA_TYPE_VIDEO, |
| .id = CODEC_ID_FFV1, |
| .priv_data_size = sizeof(FFV1Context), |
| .init = decode_init, |
| .close = common_end, |
| .decode = decode_frame, |
| .capabilities = CODEC_CAP_DR1 /*| CODEC_CAP_DRAW_HORIZ_BAND*/ | CODEC_CAP_SLICE_THREADS, |
| .long_name= NULL_IF_CONFIG_SMALL("FFmpeg video codec #1"), |
| }; |
| |
| #if CONFIG_FFV1_ENCODER |
| AVCodec ff_ffv1_encoder = { |
| .name = "ffv1", |
| .type = AVMEDIA_TYPE_VIDEO, |
| .id = CODEC_ID_FFV1, |
| .priv_data_size = sizeof(FFV1Context), |
| .init = encode_init, |
| .encode = encode_frame, |
| .close = common_end, |
| .capabilities = CODEC_CAP_SLICE_THREADS, |
| .pix_fmts= (const enum PixelFormat[]){PIX_FMT_YUV420P, PIX_FMT_YUV444P, PIX_FMT_YUV422P, PIX_FMT_YUV411P, PIX_FMT_YUV410P, PIX_FMT_0RGB32, PIX_FMT_RGB32, PIX_FMT_YUV420P16, PIX_FMT_YUV422P16, PIX_FMT_YUV444P16, PIX_FMT_YUV420P9, PIX_FMT_YUV420P10, PIX_FMT_YUV422P10, PIX_FMT_NONE}, |
| .long_name= NULL_IF_CONFIG_SMALL("FFmpeg video codec #1"), |
| }; |
| #endif |
