diff options
Diffstat (limited to 'contrib/ffmpeg/libavcodec/ffv1.c')
| -rw-r--r-- | contrib/ffmpeg/libavcodec/ffv1.c | 1040 |
1 files changed, 0 insertions, 1040 deletions
diff --git a/contrib/ffmpeg/libavcodec/ffv1.c b/contrib/ffmpeg/libavcodec/ffv1.c deleted file mode 100644 index 45f408c87..000000000 --- a/contrib/ffmpeg/libavcodec/ffv1.c +++ /dev/null @@ -1,1040 +0,0 @@ -/* - * 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 ffv1.c - * FF Video Codec 1 (an experimental lossless codec) - */ - -#include "common.h" -#include "bitstream.h" -#include "avcodec.h" -#include "dsputil.h" -#include "rangecoder.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; - RangeCoder 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]; - int run_index; - int colorspace; - - DSPContext dsp; -}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(int_fast16_t *src, int_fast16_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, int_fast16_t *src, int_fast16_t *last, int_fast16_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]; -} - -static inline void put_symbol(RangeCoder *c, uint8_t *state, int v, int is_signed){ - int i; - - if(v){ - const int a= FFABS(v); - const int e= av_log2(a); - put_rac(c, state+0, 0); - - assert(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{ - put_rac(c, state+0, 1); - } -} - -static inline int get_symbol(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 + e)){ //1..10 - e++; - } - assert(e<=9); - - a= 1; - for(i=e-1; i>=0; i--){ - a += a + get_rac(c, state+22 + i); //22..31 - } - - if(is_signed && get_rac(c, state+11 + e)) //11..21 - return -a; - else - return a; - } -} - -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; -} - -#ifdef CONFIG_ENCODERS -static inline int encode_line(FFV1Context *s, int w, int_fast16_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(s, 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){ - put_symbol(c, p->state[context], diff, 1); - }else{ - if(context == 0) run_mode=1; - - if(run_mode){ - - if(diff){ - while(run_count >= 1<<log2_run[run_index]){ - run_count -= 1<<log2_run[run_index]; - run_index++; - put_bits(&s->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)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<<log2_run[run_index]){ - run_count -= 1<<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; - int_fast16_t sample_buffer[ring_size][w+6], *sample[ring_size]; - s->run_index=0; - - memset(sample_buffer, 0, sizeof(sample_buffer)); - - for(y=0; y<h; y++){ - for(i=0; i<ring_size; i++) - sample[i]= sample_buffer[(h+i-y)%ring_size]+3; - - sample[0][-1]= sample[1][0 ]; - sample[1][ w]= sample[1][w-1]; -//{START_TIMER - for(x=0; x<w; x++){ - sample[0][x]= src[x + stride*y]; - } - encode_line(s, w, sample, plane_index, 8); -//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; - int_fast16_t sample_buffer[3][ring_size][w+6], *sample[3][ring_size]; - s->run_index=0; - - memset(sample_buffer, 0, sizeof(sample_buffer)); - - for(y=0; y<h; y++){ - for(i=0; i<ring_size; i++) - for(p=0; p<3; p++) - sample[p][i]= sample_buffer[p][(h+i-y)%ring_size]+3; - - for(x=0; x<w; x++){ - int v= src[x + stride*y]; - int b= v&0xFF; - int g= (v>>8)&0xFF; - int r= (v>>16)&0xFF; - - 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; - } - for(p=0; p<3; p++){ - sample[p][0][-1]= sample[p][1][0 ]; - sample[p][1][ w]= sample[p][1][w-1]; - encode_line(s, w, sample[p], FFMIN(p, 1), 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_header(FFV1Context *f){ - uint8_t state[CONTEXT_SIZE]; - int i; - RangeCoder * const c= &f->c; - - memset(state, 128, sizeof(state)); - - put_symbol(c, state, f->version, 0); - put_symbol(c, state, f->avctx->coder_type, 0); - put_symbol(c, state, f->colorspace, 0); //YUV cs type - 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, 0); //no transparency plane - - for(i=0; i<5; i++) - write_quant_table(c, f->quant_table[i]); -} -#endif /* CONFIG_ENCODERS */ - -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; -} - -#ifdef CONFIG_ENCODERS -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; i<s->plane_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: - s->colorspace= 0; - break; - case PIX_FMT_RGB32: - s->colorspace= 1; - break; - default: - av_log(avctx, AV_LOG_ERROR, "format not supported\n"); - return -1; - } - avcodec_get_chroma_sub_sample(avctx->pix_fmt, &s->chroma_h_shift, &s->chroma_v_shift); - - s->picture_number=0; - - return 0; -} -#endif /* CONFIG_ENCODERS */ - - -static void clear_state(FFV1Context *f){ - int i, j; - - for(i=0; i<f->plane_count; i++){ - PlaneContext *p= &f->plane[i]; - - p->interlace_bit_state[0]= 128; - p->interlace_bit_state[1]= 128; - - for(j=0; j<p->context_count; j++){ - if(f->ac){ - memset(p->state[j], 128, sizeof(uint8_t)*CONTEXT_SIZE); - }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; - } - } - } -} - -#ifdef CONFIG_ENCODERS -static int encode_frame(AVCodecContext *avctx, unsigned char *buf, int buf_size, void *data){ - FFV1Context *f = avctx->priv_data; - RangeCoder * 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; - uint8_t keystate=128; - - ff_init_range_encoder(c, buf, buf_size); -// ff_init_cabac_states(c, ff_h264_lps_range, ff_h264_mps_state, ff_h264_lps_state, 64); - ff_build_rac_states(c, 0.05*(1LL<<32), 256-8); - - *p = *pict; - p->pict_type= FF_I_TYPE; - - if(avctx->gop_size==0 || f->picture_number % avctx->gop_size == 0){ - put_rac(c, &keystate, 1); - p->key_frame= 1; - 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->pb, buf + used_count, buf_size - used_count); - } - - if(f->colorspace==0){ - 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); - }else{ - encode_rgb_frame(f, (uint32_t*)(p->data[0]), width, height, p->linesize[0]/4); - } - emms_c(); - - f->picture_number++; - - if(f->ac){ - return ff_rac_terminate(c); - }else{ - flush_put_bits(&f->pb); //nicer padding FIXME - return used_count + (put_bits_count(&f->pb)+7)/8; - } -} -#endif /* CONFIG_ENCODERS */ - -static int common_end(AVCodecContext *avctx){ - FFV1Context *s = avctx->priv_data; - int i; - - for(i=0; i<s->plane_count; i++){ - PlaneContext *p= &s->plane[i]; - - av_freep(&p->state); - } - - return 0; -} - -static inline void decode_line(FFV1Context *s, int w, int_fast16_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(s, sample[1] + x, sample[0] + x, sample[1] + x); - if(context < 0){ - context= -context; - sign=1; - }else - sign=0; - - - if(s->ac){ - diff= get_symbol(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<<log2_run[run_index]; - if(x + run_count <= w) run_index++; - }else{ - if(log2_run[run_index]) run_count = get_bits(&s->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], 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; - int_fast16_t sample_buffer[2][w+6]; - int_fast16_t *sample[2]= {sample_buffer[0]+3, sample_buffer[1]+3}; - - s->run_index=0; - - memset(sample_buffer, 0, sizeof(sample_buffer)); - - for(y=0; y<h; y++){ - int_fast16_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 - decode_line(s, w, sample, plane_index, 8); - for(x=0; x<w; x++){ - src[x + stride*y]= sample[1][x]; - } -//STOP_TIMER("decode-line")} - } -} - -static void decode_rgb_frame(FFV1Context *s, uint32_t *src, int w, int h, int stride){ - int x, y, p; - int_fast16_t sample_buffer[3][2][w+6]; - int_fast16_t *sample[3][2]= { - {sample_buffer[0][0]+3, sample_buffer[0][1]+3}, - {sample_buffer[1][0]+3, sample_buffer[1][1]+3}, - {sample_buffer[2][0]+3, sample_buffer[2][1]+3}}; - - s->run_index=0; - - memset(sample_buffer, 0, sizeof(sample_buffer)); - - for(y=0; y<h; y++){ - for(p=0; p<3; p++){ - int_fast16_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], FFMIN(p, 1), 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]; - -// 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); - } - } -} - -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_header(FFV1Context *f){ - uint8_t state[CONTEXT_SIZE]; - int i, context_count; - RangeCoder * const c= &f->c; - - memset(state, 128, sizeof(state)); - - f->version= get_symbol(c, state, 0); - f->ac= f->avctx->coder_type= get_symbol(c, state, 0); - f->colorspace= get_symbol(c, state, 0); //YUV cs type - 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); - get_rac(c, state); //transparency plane - f->plane_count= 2; - - if(f->colorspace==0){ - 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->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; - } - f->avctx->pix_fmt= PIX_FMT_RGB32; - }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); - - 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 || context_count > 32768){ - av_log(f->avctx, AV_LOG_ERROR, "read_quant_table error\n"); - return -1; - } - } - context_count= (context_count+1)/2; - - for(i=0; i<f->plane_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); - - return 0; -} - -static int decode_frame(AVCodecContext *avctx, void *data, int *data_size, uint8_t *buf, int buf_size){ - FFV1Context *f = avctx->priv_data; - RangeCoder * const c= &f->c; - const int width= f->width; - const int height= f->height; - AVFrame * const p= &f->picture; - int bytes_read; - uint8_t keystate= 128; - - AVFrame *picture = data; - - ff_init_range_decoder(c, buf, buf_size); - ff_build_rac_states(c, 0.05*(1LL<<32), 256-8); - - - p->pict_type= FF_I_TYPE; //FIXME I vs. P - if(get_rac(c, &keystate)){ - p->key_frame= 1; - if(read_header(f) < 0) - return -1; - clear_state(f); - }else{ - p->key_frame= 0; - } - if(!f->plane[0].state && !f->plane[0].vlc_state) - return -1; - - 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->gb, buf + bytes_read, buf_size - bytes_read); - } else { - bytes_read = 0; /* avoid warning */ - } - - if(f->colorspace==0){ - 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); - }else{ - decode_rgb_frame(f, (uint32_t*)p->data[0], width, height, p->linesize[0]/4); - } - - emms_c(); - - f->picture_number++; - - *picture= *p; - - avctx->release_buffer(avctx, p); //FIXME - - *data_size = sizeof(AVFrame); - - if(f->ac){ - bytes_read= c->bytestream - c->bytestream_start - 1; - if(bytes_read ==0) av_log(f->avctx, AV_LOG_ERROR, "error at end of frame\n"); - }else{ - bytes_read+= (get_bits_count(&f->gb)+7)/8; - } - - return bytes_read; -} - -AVCodec ffv1_decoder = { - "ffv1", - CODEC_TYPE_VIDEO, - CODEC_ID_FFV1, - sizeof(FFV1Context), - decode_init, - NULL, - common_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, - common_end, - .pix_fmts= (enum PixelFormat[]){PIX_FMT_YUV420P, PIX_FMT_YUV444P, PIX_FMT_YUV422P, PIX_FMT_YUV411P, PIX_FMT_YUV410P, PIX_FMT_RGB32, -1}, -}; -#endif |