/* * FFV1 encoder * * Copyright (c) 2003-2013 Michael Niedermayer * * 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) encoder */ #include "libavutil/attributes.h" #include "libavutil/avassert.h" #include "libavutil/crc.h" #include "libavutil/mem.h" #include "libavutil/opt.h" #include "libavutil/pixdesc.h" #include "avcodec.h" #include "encode.h" #include "codec_internal.h" #include "put_bits.h" #include "put_golomb.h" #include "rangecoder.h" #include "ffv1.h" #include "ffv1enc.h" 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, }; static void find_best_state(uint8_t best_state[256][256], const uint8_t one_state[256]) { int i, j, k, m; uint32_t l2tab[256]; for (i = 1; i < 256; i++) l2tab[i] = -log2(i / 256.0) * ((1U << 31) / 8); for (i = 0; i < 256; i++) { uint64_t best_len[256]; for (j = 0; j < 256; j++) best_len[j] = UINT64_MAX; for (j = FFMAX(i - 10, 1); j < FFMIN(i + 11, 256); j++) { uint32_t occ[256] = { 0 }; uint64_t len = 0; occ[j] = UINT32_MAX; if (!one_state[j]) continue; for (k = 0; k < 256; k++) { uint32_t newocc[256] = { 0 }; for (m = 1; m < 256; m++) if (occ[m]) { len += (occ[m]*(( i *(uint64_t)l2tab[ m] + (256-i)*(uint64_t)l2tab[256-m])>>8)) >> 8; } if (len < best_len[k]) { best_len[k] = len; best_state[i][k] = j; } for (m = 1; m < 256; m++) if (occ[m]) { newocc[ one_state[ m]] += occ[m] * (uint64_t) i >> 8; newocc[256 - one_state[256 - m]] += occ[m] * (uint64_t)(256 - i) >> 8; } 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 av_noinline void put_symbol(RangeCoder *c, uint8_t *state, int v, int is_signed) { put_symbol_inline(c, state, v, is_signed, NULL, NULL); } static inline void put_vlc_symbol(PutBitContext *pb, VlcState *const state, int v, int bits) { int i, k, code; v = fold(v - state->bias, bits); i = state->count; k = 0; while (i < state->error_sum) { // FIXME: optimize k++; i += i; } av_assert2(k <= 16); code = v ^ ((2 * state->drift + state->count) >> 31); ff_dlog(NULL, "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); } #define TYPE int16_t #define RENAME(name) name #include "ffv1enc_template.c" #undef TYPE #undef RENAME #define TYPE int32_t #define RENAME(name) name ## 32 #include "ffv1enc_template.c" static int encode_plane(FFV1Context *f, FFV1SliceContext *sc, const uint8_t *src, int w, int h, int stride, int plane_index, int pixel_stride, int ac) { int x, y, i, ret; const int pass1 = !!(f->avctx->flags & AV_CODEC_FLAG_PASS1); const int ring_size = f->context_model ? 3 : 2; int16_t *sample[3]; sc->run_index = 0; memset(sc->sample_buffer, 0, ring_size * (w + 6) * sizeof(*sc->sample_buffer)); for (y = 0; y < h; y++) { for (i = 0; i < ring_size; i++) sample[i] = sc->sample_buffer + (w + 6) * ((h + i - y) % ring_size) + 3; sample[0][-1]= sample[1][0 ]; sample[1][ w]= sample[1][w-1]; if (f->bits_per_raw_sample <= 8) { for (x = 0; x < w; x++) sample[0][x] = src[x * pixel_stride + stride * y]; if((ret = encode_line(f, sc, f->avctx, w, sample, plane_index, 8, ac, pass1)) < 0) return ret; } else { if (f->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 - f->bits_per_raw_sample); } } if((ret = encode_line(f, sc, f->avctx, w, sample, plane_index, f->bits_per_raw_sample, ac, pass1)) < 0) return ret; } } return 0; } 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 < MAX_QUANT_TABLE_SIZE/2; 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][MAX_QUANT_TABLE_SIZE]) { int i; for (i = 0; i < 5; i++) write_quant_table(c, quant_table[i]); } static int contains_non_128(uint8_t (*initial_state)[CONTEXT_SIZE], int nb_contexts) { if (!initial_state) return 0; for (int i = 0; i < nb_contexts; i++) for (int j = 0; j < CONTEXT_SIZE; j++) if (initial_state[i][j] != 128) return 1; return 0; } static void write_header(FFV1Context *f) { uint8_t state[CONTEXT_SIZE]; int i, j; RangeCoder *const c = &f->slices[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 == AC_RANGE_CUSTOM_TAB) { 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->bits_per_raw_sample, 0); put_rac(c, state, f->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_tables[f->context_model]); } else if (f->version < 3) { put_symbol(c, state, f->slice_count, 0); for (i = 0; i < f->slice_count; i++) { FFV1SliceContext *fs = &f->slices[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, fs->plane[j].quant_table_index, 0); av_assert0(fs->plane[j].quant_table_index == f->context_model); } } } } av_cold int ff_ffv1_write_extradata(AVCodecContext *avctx) { FFV1Context *f = avctx->priv_data; RangeCoder c; uint8_t state[CONTEXT_SIZE]; int i, j, k; uint8_t state2[32][CONTEXT_SIZE]; unsigned v; memset(state2, 128, sizeof(state2)); memset(state, 128, sizeof(state)); f->avctx->extradata_size = 10000 + 4 + (11 * 11 * 5 * 5 * 5 + 11 * 11 * 11) * 32; f->avctx->extradata = av_malloc(f->avctx->extradata_size + AV_INPUT_BUFFER_PADDING_SIZE); if (!f->avctx->extradata) return AVERROR(ENOMEM); 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); if (f->version > 2) { if (f->version == 3) { f->micro_version = 4; } else if (f->version == 4) f->micro_version = 3; put_symbol(&c, state, f->micro_version, 0); } put_symbol(&c, state, f->ac, 0); if (f->ac == AC_RANGE_CUSTOM_TAB) 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->bits_per_raw_sample, 0); put_rac(&c, state, f->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++) { if (contains_non_128(f->initial_states[i], f->context_count[i])) { 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); } } if (f->version > 2) { put_symbol(&c, state, f->ec, 0); put_symbol(&c, state, f->intra = (f->avctx->gop_size < 2), 0); } f->avctx->extradata_size = ff_rac_terminate(&c, 0); v = av_crc(av_crc_get_table(AV_CRC_32_IEEE), f->crcref, f->avctx->extradata, f->avctx->extradata_size) ^ (f->crcref ? 0x8CD88196 : 0); AV_WL32(f->avctx->extradata + f->avctx->extradata_size, v); f->avctx->extradata_size += 4; 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 (size0 - sizeX > size0*(1e-14) && 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 int encode_determine_slices(AVCodecContext *avctx) { FFV1Context *s = avctx->priv_data; int plane_count = 1 + 2*s->chroma_planes + s->transparency; int max_h_slices = AV_CEIL_RSHIFT(avctx->width , s->chroma_h_shift); int max_v_slices = AV_CEIL_RSHIFT(avctx->height, s->chroma_v_shift); s->num_v_slices = (avctx->width > 352 || avctx->height > 288 || !avctx->slices) ? 2 : 1; s->num_v_slices = FFMIN(s->num_v_slices, max_v_slices); for (; s->num_v_slices < 32; s->num_v_slices++) { for (s->num_h_slices = s->num_v_slices; s->num_h_slices < 2*s->num_v_slices; s->num_h_slices++) { int maxw = (avctx->width + s->num_h_slices - 1) / s->num_h_slices; int maxh = (avctx->height + s->num_v_slices - 1) / s->num_v_slices; if (s->num_h_slices > max_h_slices || s->num_v_slices > max_v_slices) continue; if (maxw * maxh * (int64_t)(s->bits_per_raw_sample+1) * plane_count > 8<<24) continue; if (s->version < 4) if ( ff_need_new_slices(avctx->width , s->num_h_slices, s->chroma_h_shift) ||ff_need_new_slices(avctx->height, s->num_v_slices, s->chroma_v_shift)) continue; if (avctx->slices == s->num_h_slices * s->num_v_slices && avctx->slices <= MAX_SLICES || !avctx->slices) return 0; } } av_log(avctx, AV_LOG_ERROR, "Unsupported number %d of slices requested, please specify a " "supported number with -slices (ex:4,6,9,12,16, ...)\n", avctx->slices); return AVERROR(ENOSYS); } av_cold int ff_ffv1_encode_init(AVCodecContext *avctx) { FFV1Context *s = avctx->priv_data; int i, j, k, m, ret; if ((avctx->flags & (AV_CODEC_FLAG_PASS1 | AV_CODEC_FLAG_PASS2)) || avctx->slices > 1) s->version = FFMAX(s->version, 2); if ((avctx->flags & (AV_CODEC_FLAG_PASS1 | AV_CODEC_FLAG_PASS2)) && s->ac == AC_GOLOMB_RICE) { av_log(avctx, AV_LOG_ERROR, "2 Pass mode is not possible with golomb coding\n"); return AVERROR(EINVAL); } // Unspecified level & slices, we choose version 1.2+ to ensure multithreaded decodability if (avctx->slices == 0 && avctx->level < 0 && avctx->width * avctx->height > 720*576) s->version = FFMAX(s->version, 2); if (avctx->level <= 0 && s->version == 2) { s->version = 3; } if (avctx->level >= 0 && avctx->level <= 4) { if (avctx->level < s->version) { av_log(avctx, AV_LOG_ERROR, "Version %d needed for requested features but %d requested\n", s->version, avctx->level); return AVERROR(EINVAL); } s->version = avctx->level; } if (s->ec < 0) { if (s->version >= 4) { s->ec = 2; s->crcref = 0x7a8c4079; } else if (s->version >= 3) { s->ec = 1; } else s->ec = 0; } // CRC requires version 3+ if (s->ec == 1) s->version = FFMAX(s->version, 3); if (s->ec == 2) s->version = FFMAX(s->version, 4); if ((s->version == 2 || s->version>3) && avctx->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) { av_log(avctx, AV_LOG_ERROR, "Version 2 or 4 needed for requested features but version 2 or 4 is experimental and not enabled\n"); return AVERROR_INVALIDDATA; } if (s->ac == AC_RANGE_CUSTOM_TAB) { for (i = 1; i < 256; i++) s->state_transition[i] = ver2_state[i]; } else { RangeCoder c; ff_build_rac_states(&c, 0.05 * (1LL << 32), 256 - 8); for (i = 1; i < 256; i++) s->state_transition[i] = c.one_state[i]; } for (i = 0; i < 256; i++) { s->quant_table_count = 2; if ((s->qtable == -1 && s->bits_per_raw_sample <= 8) || s->qtable == 1) { 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]; s->context_count[0] = (11 * 11 * 11 + 1) / 2; s->context_count[1] = (11 * 11 * 5 * 5 * 5 + 1) / 2; } else { s->quant_tables[0][0][i]= quant9_10bit[i]; s->quant_tables[0][1][i]= 9*quant9_10bit[i]; s->quant_tables[0][2][i]= 9*9*quant9_10bit[i]; s->quant_tables[1][0][i]= quant9_10bit[i]; s->quant_tables[1][1][i]= 9*quant9_10bit[i]; s->quant_tables[1][2][i]= 9*9*quant5_10bit[i]; s->quant_tables[1][3][i]= 5*9*9*quant5_10bit[i]; s->quant_tables[1][4][i]= 5*5*9*9*quant5_10bit[i]; s->context_count[0] = (9 * 9 * 9 + 1) / 2; s->context_count[1] = (9 * 9 * 5 * 5 * 5 + 1) / 2; } } if ((ret = ff_ffv1_allocate_initial_states(s)) < 0) return ret; if (!s->transparency) s->plane_count = 2; if (!s->chroma_planes && s->version > 3) s->plane_count--; s->picture_number = 0; if (avctx->flags & (AV_CODEC_FLAG_PASS1 | AV_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] = av_malloc_array(256, 256); int gob_count = 0; char *next; if (!best_state) return AVERROR(ENOMEM); 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); av_freep(&best_state); return AVERROR_INVALIDDATA; } 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); av_freep(&best_state); return AVERROR_INVALIDDATA; } p = next; } } gob_count = strtol(p, &next, 0); if (next == p || gob_count <= 0) { av_log(avctx, AV_LOG_ERROR, "2Pass file invalid\n"); av_freep(&best_state); return AVERROR_INVALIDDATA; } p = next; while (*p == '\n' || *p == ' ') p++; if (p[0] == 0) break; } if (s->ac == AC_RANGE_CUSTOM_TAB) sort_stt(s, s->state_transition); find_best_state(best_state, s->state_transition); for (i = 0; i < s->quant_table_count; i++) { for (k = 0; k < 32; k++) { double a=0, b=0; int jp = 0; for (j = 0; j < s->context_count[i]; j++) { double p = 128; if (s->rc_stat2[i][j][k][0] + s->rc_stat2[i][j][k][1] > 200 && j || a+b > 200) { if (a+b) p = 256.0 * b / (a + b); s->initial_states[i][jp][k] = best_state[av_clip(round(p), 1, 255)][av_clip_uint8((a + b) / gob_count)]; for(jp++; jpinitial_states[i][jp][k] = s->initial_states[i][jp-1][k]; a=b=0; } a += s->rc_stat2[i][j][k][0]; b += s->rc_stat2[i][j][k][1]; if (a+b) { p = 256.0 * b / (a + b); } s->initial_states[i][j][k] = best_state[av_clip(round(p), 1, 255)][av_clip_uint8((a + b) / gob_count)]; } } } av_freep(&best_state); } if (s->version <= 1) { /* Disable slices when the version doesn't support them */ s->num_h_slices = 1; s->num_v_slices = 1; } return 0; } av_cold int ff_ffv1_encode_setup_plane_info(AVCodecContext *avctx, enum AVPixelFormat pix_fmt) { FFV1Context *s = avctx->priv_data; const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt); s->plane_count = 3; switch(pix_fmt) { case AV_PIX_FMT_GRAY9: case AV_PIX_FMT_YUV444P9: case AV_PIX_FMT_YUV422P9: case AV_PIX_FMT_YUV420P9: case AV_PIX_FMT_YUVA444P9: case AV_PIX_FMT_YUVA422P9: case AV_PIX_FMT_YUVA420P9: if (!avctx->bits_per_raw_sample) s->bits_per_raw_sample = 9; case AV_PIX_FMT_GRAY10: case AV_PIX_FMT_YUV444P10: case AV_PIX_FMT_YUV440P10: case AV_PIX_FMT_YUV420P10: case AV_PIX_FMT_YUV422P10: case AV_PIX_FMT_YUVA444P10: case AV_PIX_FMT_YUVA422P10: case AV_PIX_FMT_YUVA420P10: if (!avctx->bits_per_raw_sample && !s->bits_per_raw_sample) s->bits_per_raw_sample = 10; case AV_PIX_FMT_GRAY12: case AV_PIX_FMT_YUV444P12: case AV_PIX_FMT_YUV440P12: case AV_PIX_FMT_YUV420P12: case AV_PIX_FMT_YUV422P12: case AV_PIX_FMT_YUVA444P12: case AV_PIX_FMT_YUVA422P12: if (!avctx->bits_per_raw_sample && !s->bits_per_raw_sample) s->bits_per_raw_sample = 12; case AV_PIX_FMT_GRAY14: case AV_PIX_FMT_YUV444P14: case AV_PIX_FMT_YUV420P14: case AV_PIX_FMT_YUV422P14: if (!avctx->bits_per_raw_sample && !s->bits_per_raw_sample) s->bits_per_raw_sample = 14; s->packed_at_lsb = 1; case AV_PIX_FMT_GRAY16: case AV_PIX_FMT_YUV444P16: case AV_PIX_FMT_YUV422P16: case AV_PIX_FMT_YUV420P16: case AV_PIX_FMT_YUVA444P16: case AV_PIX_FMT_YUVA422P16: case AV_PIX_FMT_YUVA420P16: if (!avctx->bits_per_raw_sample && !s->bits_per_raw_sample) { s->bits_per_raw_sample = 16; } else if (!s->bits_per_raw_sample) { s->bits_per_raw_sample = avctx->bits_per_raw_sample; } if (s->bits_per_raw_sample <= 8) { av_log(avctx, AV_LOG_ERROR, "bits_per_raw_sample invalid\n"); return AVERROR_INVALIDDATA; } s->version = FFMAX(s->version, 1); case AV_PIX_FMT_GRAY8: case AV_PIX_FMT_YA8: case AV_PIX_FMT_YUV444P: case AV_PIX_FMT_YUV440P: case AV_PIX_FMT_YUV422P: case AV_PIX_FMT_YUV420P: case AV_PIX_FMT_YUV411P: case AV_PIX_FMT_YUV410P: case AV_PIX_FMT_YUVA444P: case AV_PIX_FMT_YUVA422P: case AV_PIX_FMT_YUVA420P: s->chroma_planes = desc->nb_components < 3 ? 0 : 1; s->colorspace = 0; s->transparency = !!(desc->flags & AV_PIX_FMT_FLAG_ALPHA); if (!avctx->bits_per_raw_sample && !s->bits_per_raw_sample) s->bits_per_raw_sample = 8; else if (!s->bits_per_raw_sample) s->bits_per_raw_sample = 8; break; case AV_PIX_FMT_RGB32: s->colorspace = 1; s->transparency = 1; s->chroma_planes = 1; s->bits_per_raw_sample = 8; break; case AV_PIX_FMT_RGBA64: s->colorspace = 1; s->transparency = 1; s->chroma_planes = 1; s->bits_per_raw_sample = 16; s->use32bit = 1; s->version = FFMAX(s->version, 1); break; case AV_PIX_FMT_RGB48: s->colorspace = 1; s->chroma_planes = 1; s->bits_per_raw_sample = 16; s->use32bit = 1; s->version = FFMAX(s->version, 1); break; case AV_PIX_FMT_0RGB32: s->colorspace = 1; s->chroma_planes = 1; s->bits_per_raw_sample = 8; break; case AV_PIX_FMT_GBRP9: if (!avctx->bits_per_raw_sample) s->bits_per_raw_sample = 9; case AV_PIX_FMT_GBRP10: case AV_PIX_FMT_GBRAP10: if (!avctx->bits_per_raw_sample && !s->bits_per_raw_sample) s->bits_per_raw_sample = 10; case AV_PIX_FMT_GBRP12: case AV_PIX_FMT_GBRAP12: if (!avctx->bits_per_raw_sample && !s->bits_per_raw_sample) s->bits_per_raw_sample = 12; case AV_PIX_FMT_GBRP14: case AV_PIX_FMT_GBRAP14: if (!avctx->bits_per_raw_sample && !s->bits_per_raw_sample) s->bits_per_raw_sample = 14; case AV_PIX_FMT_GBRP16: case AV_PIX_FMT_GBRAP16: if (!avctx->bits_per_raw_sample && !s->bits_per_raw_sample) s->bits_per_raw_sample = 16; else if (!s->bits_per_raw_sample) s->bits_per_raw_sample = avctx->bits_per_raw_sample; s->transparency = !!(desc->flags & AV_PIX_FMT_FLAG_ALPHA); s->colorspace = 1; s->chroma_planes = 1; if (s->bits_per_raw_sample >= 16) { s->use32bit = 1; } s->version = FFMAX(s->version, 1); break; default: av_log(avctx, AV_LOG_ERROR, "format %s not supported\n", av_get_pix_fmt_name(pix_fmt)); return AVERROR(ENOSYS); } av_assert0(s->bits_per_raw_sample >= 8); return av_pix_fmt_get_chroma_sub_sample(pix_fmt, &s->chroma_h_shift, &s->chroma_v_shift); } static int encode_init_internal(AVCodecContext *avctx) { int ret; FFV1Context *s = avctx->priv_data; if ((ret = ff_ffv1_common_init(avctx)) < 0) return ret; if (s->ac == 1) // Compatbility with common command line usage s->ac = AC_RANGE_CUSTOM_TAB; else if (s->ac == AC_RANGE_DEFAULT_TAB_FORCE) s->ac = AC_RANGE_DEFAULT_TAB; ret = ff_ffv1_encode_setup_plane_info(avctx, avctx->pix_fmt); if (ret < 0) return ret; if (s->bits_per_raw_sample > (s->version > 3 ? 16 : 8)) { if (s->ac == AC_GOLOMB_RICE) { av_log(avctx, AV_LOG_INFO, "high bits_per_raw_sample, forcing range coder\n"); s->ac = AC_RANGE_CUSTOM_TAB; } } s->version = 0; ret = ff_ffv1_encode_init(avctx); if (ret < 0) return ret; if (s->version > 1) { if ((ret = encode_determine_slices(avctx)) < 0) return ret; if ((ret = ff_ffv1_write_extradata(avctx)) < 0) return ret; } if ((ret = ff_ffv1_init_slice_contexts(s)) < 0) return ret; s->slice_count = s->max_slice_count; for (int j = 0; j < s->slice_count; j++) { for (int i = 0; i < s->plane_count; i++) { PlaneContext *const p = &s->slices[j].plane[i]; p->quant_table_index = s->context_model; p->context_count = s->context_count[p->quant_table_index]; } ff_build_rac_states(&s->slices[j].c, 0.05 * (1LL << 32), 256 - 8); } if ((ret = ff_ffv1_init_slices_state(s)) < 0) return ret; #define STATS_OUT_SIZE 1024 * 1024 * 6 if (avctx->flags & AV_CODEC_FLAG_PASS1) { avctx->stats_out = av_mallocz(STATS_OUT_SIZE); if (!avctx->stats_out) return AVERROR(ENOMEM); for (int i = 0; i < s->quant_table_count; i++) for (int j = 0; j < s->max_slice_count; j++) { FFV1SliceContext *sc = &s->slices[j]; av_assert0(!sc->rc_stat2[i]); sc->rc_stat2[i] = av_mallocz(s->context_count[i] * sizeof(*sc->rc_stat2[i])); if (!sc->rc_stat2[i]) return AVERROR(ENOMEM); } } return 0; } static void encode_slice_header(FFV1Context *f, FFV1SliceContext *sc) { RangeCoder *c = &sc->c; uint8_t state[CONTEXT_SIZE]; int j; memset(state, 128, sizeof(state)); put_symbol(c, state, sc->sx, 0); put_symbol(c, state, sc->sy, 0); put_symbol(c, state, 0, 0); put_symbol(c, state, 0, 0); for (j=0; jplane_count; j++) { put_symbol(c, state, sc->plane[j].quant_table_index, 0); av_assert0(sc->plane[j].quant_table_index == f->context_model); } if (!(f->cur_enc_frame->flags & AV_FRAME_FLAG_INTERLACED)) put_symbol(c, state, 3, 0); else put_symbol(c, state, 1 + !(f->cur_enc_frame->flags & AV_FRAME_FLAG_TOP_FIELD_FIRST), 0); put_symbol(c, state, f->cur_enc_frame->sample_aspect_ratio.num, 0); put_symbol(c, state, f->cur_enc_frame->sample_aspect_ratio.den, 0); if (f->version > 3) { put_rac(c, state, sc->slice_coding_mode == 1); if (sc->slice_coding_mode == 1) ff_ffv1_clear_slice_state(f, sc); put_symbol(c, state, sc->slice_coding_mode, 0); if (sc->slice_coding_mode != 1 && f->colorspace == 1) { put_symbol(c, state, sc->slice_rct_by_coef, 0); put_symbol(c, state, sc->slice_rct_ry_coef, 0); } } } static void choose_rct_params(const FFV1Context *f, FFV1SliceContext *sc, const uint8_t *src[3], const int stride[3], int w, int h) { #define NB_Y_COEFF 15 static const int rct_y_coeff[15][2] = { {0, 0}, // 4G {1, 1}, // R + 2G + B {2, 2}, // 2R + 2B {0, 2}, // 2G + 2B {2, 0}, // 2R + 2G {4, 0}, // 4R {0, 4}, // 4B {0, 3}, // 1G + 3B {3, 0}, // 3R + 1G {3, 1}, // 3R + B {1, 3}, // R + 3B {1, 2}, // R + G + 2B {2, 1}, // 2R + G + B {0, 1}, // 3G + B {1, 0}, // R + 3G }; int stat[NB_Y_COEFF] = {0}; int x, y, i, p, best; int16_t *sample[3]; int lbd = f->bits_per_raw_sample <= 8; int packed = !src[1]; int transparency = f->transparency; int packed_size = (3 + transparency)*2; for (y = 0; y < h; y++) { int lastr=0, lastg=0, lastb=0; for (p = 0; p < 3; p++) sample[p] = sc->sample_buffer + p*w; for (x = 0; x < w; x++) { int b, g, r; int ab, ag, ar; if (lbd) { unsigned v = *((const uint32_t*)(src[0] + x*4 + stride[0]*y)); b = v & 0xFF; g = (v >> 8) & 0xFF; r = (v >> 16) & 0xFF; } else if (packed) { const uint16_t *p = ((const uint16_t*)(src[0] + x*packed_size + stride[0]*y)); r = p[0]; g = p[1]; b = p[2]; } else { b = *((const uint16_t*)(src[0] + x*2 + stride[0]*y)); g = *((const uint16_t*)(src[1] + x*2 + stride[1]*y)); r = *((const uint16_t*)(src[2] + x*2 + stride[2]*y)); } ar = r - lastr; ag = g - lastg; ab = b - lastb; if (x && y) { int bg = ag - sample[0][x]; int bb = ab - sample[1][x]; int br = ar - sample[2][x]; br -= bg; bb -= bg; for (i = 0; i>2)); } } sample[0][x] = ag; sample[1][x] = ab; sample[2][x] = ar; lastr = r; lastg = g; lastb = b; } } best = 0; for (i=1; islice_rct_by_coef = rct_y_coeff[best][1]; sc->slice_rct_ry_coef = rct_y_coeff[best][0]; } static int encode_slice(AVCodecContext *c, void *arg) { FFV1SliceContext *sc = arg; FFV1Context *f = c->priv_data; int width = sc->slice_width; int height = sc->slice_height; int x = sc->slice_x; int y = sc->slice_y; const AVFrame *const p = f->cur_enc_frame; const int ps = av_pix_fmt_desc_get(c->pix_fmt)->comp[0].step; int ret; RangeCoder c_bak = sc->c; const uint8_t *planes[4] = {p->data[0] + ps*x + y*p->linesize[0], p->data[1] ? p->data[1] + ps*x + y*p->linesize[1] : NULL, p->data[2] ? p->data[2] + ps*x + y*p->linesize[2] : NULL, p->data[3] ? p->data[3] + ps*x + y*p->linesize[3] : NULL}; int ac = f->ac; sc->slice_coding_mode = 0; if (f->version > 3 && f->colorspace == 1) { choose_rct_params(f, sc, planes, p->linesize, width, height); } else { sc->slice_rct_by_coef = 1; sc->slice_rct_ry_coef = 1; } retry: if (f->key_frame) ff_ffv1_clear_slice_state(f, sc); if (f->version > 2) { encode_slice_header(f, sc); } if (ac == AC_GOLOMB_RICE) { sc->ac_byte_count = f->version > 2 || (!x && !y) ? ff_rac_terminate(&sc->c, f->version > 2) : 0; init_put_bits(&sc->pb, sc->c.bytestream_start + sc->ac_byte_count, sc->c.bytestream_end - sc->c.bytestream_start - sc->ac_byte_count); } if (f->colorspace == 0 && c->pix_fmt != AV_PIX_FMT_YA8) { const int chroma_width = AV_CEIL_RSHIFT(width, f->chroma_h_shift); const int chroma_height = AV_CEIL_RSHIFT(height, f->chroma_v_shift); const int cx = x >> f->chroma_h_shift; const int cy = y >> f->chroma_v_shift; ret = encode_plane(f, sc, p->data[0] + ps*x + y*p->linesize[0], width, height, p->linesize[0], 0, 1, ac); if (f->chroma_planes) { ret |= encode_plane(f, sc, p->data[1] + ps*cx+cy*p->linesize[1], chroma_width, chroma_height, p->linesize[1], 1, 1, ac); ret |= encode_plane(f, sc, p->data[2] + ps*cx+cy*p->linesize[2], chroma_width, chroma_height, p->linesize[2], 1, 1, ac); } if (f->transparency) ret |= encode_plane(f, sc, p->data[3] + ps*x + y*p->linesize[3], width, height, p->linesize[3], 2, 1, ac); } else if (c->pix_fmt == AV_PIX_FMT_YA8) { ret = encode_plane(f, sc, p->data[0] + ps*x + y*p->linesize[0], width, height, p->linesize[0], 0, 2, ac); ret |= encode_plane(f, sc, p->data[0] + 1 + ps*x + y*p->linesize[0], width, height, p->linesize[0], 1, 2, ac); } else if (f->use32bit) { ret = encode_rgb_frame32(f, sc, planes, width, height, p->linesize); } else { ret = encode_rgb_frame(f, sc, planes, width, height, p->linesize); } if (ac != AC_GOLOMB_RICE) { sc->ac_byte_count = ff_rac_terminate(&sc->c, 1); } else { flush_put_bits(&sc->pb); // FIXME: nicer padding sc->ac_byte_count += put_bytes_output(&sc->pb); } if (ret < 0) { av_assert0(sc->slice_coding_mode == 0); if (f->version < 4) { av_log(c, AV_LOG_ERROR, "Buffer too small\n"); return ret; } av_log(c, AV_LOG_DEBUG, "Coding slice as PCM\n"); ac = 1; sc->slice_coding_mode = 1; sc->c = c_bak; goto retry; } return 0; } static int encode_frame(AVCodecContext *avctx, AVPacket *pkt, const AVFrame *pict, int *got_packet) { FFV1Context *f = avctx->priv_data; RangeCoder *const c = &f->slices[0].c; uint8_t keystate = 128; uint8_t *buf_p; int i, ret; int64_t maxsize; if(!pict) { if (avctx->flags & AV_CODEC_FLAG_PASS1) { 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])); av_assert0(f->slice_count == f->max_slice_count); for (j = 0; j < f->slice_count; j++) { const FFV1SliceContext *sc = &f->slices[j]; for (i = 0; i < 256; i++) { f->rc_stat[i][0] += sc->rc_stat[i][0]; f->rc_stat[i][1] += sc->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] += sc->rc_stat2[i][k][m][0]; f->rc_stat2[i][k][m][1] += sc->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); } return 0; } maxsize = avctx->width*avctx->height * (1 + f->transparency); if (f->chroma_planes) maxsize += AV_CEIL_RSHIFT(avctx->width, f->chroma_h_shift) * AV_CEIL_RSHIFT(f->height, f->chroma_v_shift) * 2; maxsize += f->slice_count * 800; //for slice header if (f->version > 3) { maxsize *= f->bits_per_raw_sample + 1; } else { maxsize += f->slice_count * 2 * (avctx->width + avctx->height); //for bug with slices that code some pixels more than once maxsize *= 8*(2*f->bits_per_raw_sample + 5); } maxsize >>= 3; maxsize += FF_INPUT_BUFFER_MIN_SIZE; if (maxsize > INT_MAX - AV_INPUT_BUFFER_PADDING_SIZE - 32) { av_log(avctx, AV_LOG_WARNING, "Cannot allocate worst case packet size, the encoding could fail\n"); maxsize = INT_MAX - AV_INPUT_BUFFER_PADDING_SIZE - 32; } if ((ret = ff_alloc_packet(avctx, pkt, maxsize)) < 0) return ret; ff_init_range_encoder(c, pkt->data, pkt->size); ff_build_rac_states(c, 0.05 * (1LL << 32), 256 - 8); f->cur_enc_frame = pict; if (avctx->gop_size == 0 || f->picture_number % avctx->gop_size == 0) { put_rac(c, &keystate, 1); f->key_frame = 1; f->gob_count++; write_header(f); } else { put_rac(c, &keystate, 0); f->key_frame = 0; } if (f->ac == AC_RANGE_CUSTOM_TAB) { 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 = 0; i < f->slice_count; i++) { FFV1SliceContext *sc = &f->slices[i]; uint8_t *start = pkt->data + pkt->size * (int64_t)i / f->slice_count; int len = pkt->size / f->slice_count; if (i) { ff_init_range_encoder(&sc->c, start, len); } else { av_assert0(sc->c.bytestream_end >= sc->c.bytestream_start + len); av_assert0(sc->c.bytestream < sc->c.bytestream_start + len); sc->c.bytestream_end = sc->c.bytestream_start + len; } } avctx->execute(avctx, encode_slice, f->slices, NULL, f->slice_count, sizeof(*f->slices)); buf_p = pkt->data; for (i = 0; i < f->slice_count; i++) { FFV1SliceContext *sc = &f->slices[i]; int bytes = sc->ac_byte_count; if (i > 0 || f->version > 2) { av_assert0(bytes < pkt->size / f->slice_count); memmove(buf_p, sc->c.bytestream_start, bytes); av_assert0(bytes < (1 << 24)); AV_WB24(buf_p + bytes, bytes); bytes += 3; } if (f->ec) { unsigned v; buf_p[bytes++] = 0; v = av_crc(av_crc_get_table(AV_CRC_32_IEEE), f->crcref, buf_p, bytes) ^ (f->crcref ? 0x8CD88196 : 0); AV_WL32(buf_p + bytes, v); bytes += 4; } buf_p += bytes; } if (avctx->flags & AV_CODEC_FLAG_PASS1) avctx->stats_out[0] = '\0'; f->picture_number++; pkt->size = buf_p - pkt->data; pkt->flags |= AV_PKT_FLAG_KEY * f->key_frame; *got_packet = 1; return 0; } #define OFFSET(x) offsetof(FFV1Context, x) #define VE AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM static const AVOption options[] = { { "slicecrc", "Protect slices with CRCs", OFFSET(ec), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, 2, VE }, { "coder", "Coder type", OFFSET(ac), AV_OPT_TYPE_INT, { .i64 = 0 }, -2, 2, VE, .unit = "coder" }, { "rice", "Golomb rice", 0, AV_OPT_TYPE_CONST, { .i64 = AC_GOLOMB_RICE }, INT_MIN, INT_MAX, VE, .unit = "coder" }, { "range_def", "Range with default table", 0, AV_OPT_TYPE_CONST, { .i64 = AC_RANGE_DEFAULT_TAB_FORCE }, INT_MIN, INT_MAX, VE, .unit = "coder" }, { "range_tab", "Range with custom table", 0, AV_OPT_TYPE_CONST, { .i64 = AC_RANGE_CUSTOM_TAB }, INT_MIN, INT_MAX, VE, .unit = "coder" }, { "ac", "Range with custom table (the ac option exists for compatibility and is deprecated)", 0, AV_OPT_TYPE_CONST, { .i64 = 1 }, INT_MIN, INT_MAX, VE, .unit = "coder" }, { "context", "Context model", OFFSET(context_model), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, VE }, { "qtable", "Quantization table", OFFSET(qtable), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, 2, VE }, { NULL } }; static const AVClass ffv1_class = { .class_name = "ffv1 encoder", .item_name = av_default_item_name, .option = options, .version = LIBAVUTIL_VERSION_INT, }; const FFCodec ff_ffv1_encoder = { .p.name = "ffv1", CODEC_LONG_NAME("FFmpeg video codec #1"), .p.type = AVMEDIA_TYPE_VIDEO, .p.id = AV_CODEC_ID_FFV1, .p.capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_DELAY | AV_CODEC_CAP_SLICE_THREADS | AV_CODEC_CAP_ENCODER_REORDERED_OPAQUE, .priv_data_size = sizeof(FFV1Context), .init = encode_init_internal, FF_CODEC_ENCODE_CB(encode_frame), .close = ff_ffv1_close, .p.pix_fmts = (const enum AVPixelFormat[]) { AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUVA420P, AV_PIX_FMT_YUVA422P, AV_PIX_FMT_YUV444P, AV_PIX_FMT_YUVA444P, AV_PIX_FMT_YUV440P, AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUV411P, AV_PIX_FMT_YUV410P, AV_PIX_FMT_0RGB32, AV_PIX_FMT_RGB32, AV_PIX_FMT_YUV420P16, AV_PIX_FMT_YUV422P16, AV_PIX_FMT_YUV444P16, AV_PIX_FMT_YUV444P9, AV_PIX_FMT_YUV422P9, AV_PIX_FMT_YUV420P9, AV_PIX_FMT_YUV420P10, AV_PIX_FMT_YUV422P10, AV_PIX_FMT_YUV444P10, AV_PIX_FMT_YUV420P12, AV_PIX_FMT_YUV422P12, AV_PIX_FMT_YUV444P12, AV_PIX_FMT_YUVA444P16, AV_PIX_FMT_YUVA422P16, AV_PIX_FMT_YUVA420P16, AV_PIX_FMT_YUVA444P12, AV_PIX_FMT_YUVA422P12, AV_PIX_FMT_YUVA444P10, AV_PIX_FMT_YUVA422P10, AV_PIX_FMT_YUVA420P10, AV_PIX_FMT_YUVA444P9, AV_PIX_FMT_YUVA422P9, AV_PIX_FMT_YUVA420P9, AV_PIX_FMT_GRAY16, AV_PIX_FMT_GRAY8, AV_PIX_FMT_GBRP9, AV_PIX_FMT_GBRP10, AV_PIX_FMT_GBRP12, AV_PIX_FMT_GBRP14, AV_PIX_FMT_GBRAP14, AV_PIX_FMT_GBRAP10, AV_PIX_FMT_GBRAP12, AV_PIX_FMT_YA8, AV_PIX_FMT_GRAY10, AV_PIX_FMT_GRAY12, AV_PIX_FMT_GRAY14, AV_PIX_FMT_GBRP16, AV_PIX_FMT_RGB48, AV_PIX_FMT_GBRAP16, AV_PIX_FMT_RGBA64, AV_PIX_FMT_GRAY9, AV_PIX_FMT_YUV420P14, AV_PIX_FMT_YUV422P14, AV_PIX_FMT_YUV444P14, AV_PIX_FMT_YUV440P10, AV_PIX_FMT_YUV440P12, AV_PIX_FMT_NONE }, .color_ranges = AVCOL_RANGE_MPEG, .p.priv_class = &ffv1_class, .caps_internal = FF_CODEC_CAP_INIT_CLEANUP | FF_CODEC_CAP_EOF_FLUSH, };