From 71f7b22dba60524b2285643ae0b49d8f64977129 Mon Sep 17 00:00:00 2001 From: Luca Barbato Date: Fri, 19 Oct 2012 10:19:36 +0200 Subject: ffv1: split decoder and encoder --- libavcodec/ffv1enc.c | 871 +++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 871 insertions(+) create mode 100644 libavcodec/ffv1enc.c (limited to 'libavcodec/ffv1enc.c') diff --git a/libavcodec/ffv1enc.c b/libavcodec/ffv1enc.c new file mode 100644 index 0000000000..bd9196a20d --- /dev/null +++ b/libavcodec/ffv1enc.c @@ -0,0 +1,871 @@ +/* + * FFV1 encoder for libavcodec + * + * Copyright (c) 2012 Michael Niedermayer + * + * This file is part of Libav. + * + * Libav 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. + * + * Libav 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 Libav; 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/avassert.h" +#include "avcodec.h" +#include "get_bits.h" +#include "put_bits.h" +#include "dsputil.h" +#include "rangecoder.h" +#include "golomb.h" +#include "mathops.h" +#include "ffv1.h" + +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 = 0; 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 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; + } + + 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 + + av_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); +} + +static av_always_inline int encode_line(FFV1Context *s, int w, + int16_t *sample[3], + 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++; + } + } + + av_dlog(s->avctx, "count:%d index:%d, mode:%d, x:%d pos:%d\n", + run_count, run_index, run_mode, x, + (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 { + 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[3][3]; + s->run_index = 0; + + memset(s->sample_buffer, 0, ring_size * 3 * (w + 6) * sizeof(*s->sample_buffer)); + + for (y = 0; y < h; y++) { + for (i = 0; i < ring_size; i++) + for (p = 0; p < 3; 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++) { + 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; + + 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_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, 0); // no transparency plane + + 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); + } + } + } +} + +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, 0); // no transparency plane + 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 ffv1_encode_init(AVCodecContext *avctx) +{ + FFV1Context *s = avctx->priv_data; + int i, j, k, m; + + ffv1_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] = ffv1_ver2_state[i]; + + s->plane_count = 2; + for (i = 0; i < 256; i++) { + s->quant_table_count = 2; + if (avctx->bits_per_raw_sample <= 8) { + s->quant_tables[0][0][i] = ffv1_quant11[i]; + s->quant_tables[0][1][i] = ffv1_quant11[i] * 11; + s->quant_tables[0][2][i] = ffv1_quant11[i] * 11 * 11; + s->quant_tables[1][0][i] = ffv1_quant11[i]; + s->quant_tables[1][1][i] = ffv1_quant11[i] * 11; + s->quant_tables[1][2][i] = ffv1_quant5[i] * 11 * 11; + s->quant_tables[1][3][i] = ffv1_quant5[i] * 5 * 11 * 11; + s->quant_tables[1][4][i] = ffv1_quant5[i] * 5 * 5 * 11 * 11; + } else { + s->quant_tables[0][0][i] = ffv1_quant9_10bit[i]; + s->quant_tables[0][1][i] = ffv1_quant9_10bit[i] * 11; + s->quant_tables[0][2][i] = ffv1_quant9_10bit[i] * 11 * 11; + s->quant_tables[1][0][i] = ffv1_quant9_10bit[i]; + s->quant_tables[1][1][i] = ffv1_quant9_10bit[i] * 11; + s->quant_tables[1][2][i] = ffv1_quant5_10bit[i] * 11 * 11; + s->quant_tables[1][3][i] = ffv1_quant5_10bit[i] * 5 * 11 * 11; + s->quant_tables[1][4][i] = ffv1_quant5_10bit[i] * 5 * 5 * 11 * 11; + } + } + 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 (ffv1_allocate_initial_states(s) < 0) + return AVERROR(ENOMEM); + + avctx->coded_frame = &s->picture; + switch (avctx->pix_fmt) { + case AV_PIX_FMT_YUV444P16: + case AV_PIX_FMT_YUV422P16: + case AV_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 AV_PIX_FMT_YUV444P: + case AV_PIX_FMT_YUV422P: + case AV_PIX_FMT_YUV420P: + case AV_PIX_FMT_YUV411P: + case AV_PIX_FMT_YUV410P: + s->colorspace = 0; + break; + case AV_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; + + 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 (ffv1_init_slice_contexts(s) < 0) + return -1; + if (ffv1_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; +} + +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; + + 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] + x + y * p->linesize[0], + width, height, p->linesize[0], 0); + + encode_plane(fs, p->data[1] + cx + cy * p->linesize[1], + chroma_width, chroma_height, p->linesize[1], 1); + encode_plane(fs, p->data[2] + cx + cy * p->linesize[2], + chroma_width, chroma_height, p->linesize[2], 1); + } else { + encode_rgb_frame(fs, (uint32_t *)(p->data[0]) + + x + y * (p->linesize[0] / 4), + width, height, p->linesize[0] / 4); + } + emms_c(); + + return 0; +} + +static int ffv1_encode_frame(AVCodecContext *avctx, AVPacket *pkt, + const AVFrame *pict, int *got_packet) +{ + FFV1Context *f = avctx->priv_data; + RangeCoder *const c = &f->slice_context[0]->c; + AVFrame *const p = &f->picture; + int used_count = 0; + uint8_t keystate = 128; + uint8_t *buf_p; + int i, ret; + + if (!pkt->data && + (ret = av_new_packet(pkt, avctx->width * avctx->height * + ((8 * 2 + 1 + 1) * 4) / 8 + FF_MIN_BUFFER_SIZE)) < 0) { + av_log(avctx, AV_LOG_ERROR, "Error getting output packet.\n"); + return ret; + } + + ff_init_range_encoder(c, pkt->data, pkt->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); + ffv1_clear_state(f); + } else { + put_rac(c, &keystate, 0); + p->key_frame = 0; + } + + if (!f->ac) { + used_count += ff_rac_terminate(c); + init_put_bits(&f->slice_context[0]->pb, pkt->data + used_count, + pkt->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 = pkt->data + (pkt->size - used_count) * i / f->slice_count; + int len = pkt->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 = pkt->data; + 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); // FIXME: nicer padding + bytes = used_count + (put_bits_count(&fs->pb) + 7) / 8; + used_count = 0; + } + if (i > 0) { + av_assert0(bytes < pkt->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++; + pkt->size = buf_p - pkt->data; + pkt->flags |= AV_PKT_FLAG_KEY * p->key_frame; + *got_packet = 1; + + return 0; +} + +AVCodec ff_ffv1_encoder = { + .name = "ffv1", + .type = AVMEDIA_TYPE_VIDEO, + .id = AV_CODEC_ID_FFV1, + .priv_data_size = sizeof(FFV1Context), + .init = ffv1_encode_init, + .encode2 = ffv1_encode_frame, + .close = ffv1_close, + .capabilities = CODEC_CAP_SLICE_THREADS, + .pix_fmts = (const enum AVPixelFormat[]) { + AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUV444P, + AV_PIX_FMT_YUV411P, AV_PIX_FMT_YUV410P, + AV_PIX_FMT_YUV420P16, AV_PIX_FMT_YUV422P16, AV_PIX_FMT_YUV444P16, + AV_PIX_FMT_RGB32, + AV_PIX_FMT_NONE + }, + .long_name = NULL_IF_CONFIG_SMALL("FFmpeg video codec #1"), +}; -- cgit v1.2.3