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FFmpeg/libavcodec/ffv1enc.c
Jérôme Martinez 58e16a4f4b avcodec/ffv1enc: mark RGB48 support as non-experimental 
Resulting bitstream was tested with a conformance checker
using the last draft of FFV1 specifications.

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

Also the files are already in the wild, and decoder support is
thus needed. And with decoders widely supporting it, there is no
advantage in not allowing it in the encoder.
The exact bitstream format may change in future versions of the
spec, if improvments are found.
2018-01-12 12:31:55 +01:00

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/*
* FFV1 encoder
*
* Copyright (c) 2003-2013 Michael Niedermayer <michaelni@gmx.at>
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/**
* @file
* FF Video Codec 1 (a lossless codec) encoder
*/
#include "libavutil/attributes.h"
#include "libavutil/avassert.h"
#include "libavutil/crc.h"
#include "libavutil/opt.h"
#include "libavutil/imgutils.h"
#include "libavutil/pixdesc.h"
#include "libavutil/timer.h"
#include "avcodec.h"
#include "internal.h"
#include "put_bits.h"
#include "rangecoder.h"
#include "golomb.h"
#include "mathops.h"
#include "ffv1.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;
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;
if (!one_state[j])
continue;
for (k = 0; k < 256; k++) {
double newocc[256] = { 0 };
for (m = 1; m < 256; m++)
if (occ[m]) {
len -=occ[m]*( p *l2tab[ m]
+ (1-p)*l2tab[256-m]);
}
if (len < best_len[k]) {
best_len[k] = len;
best_state[i][k] = j;
}
for (m = 1; 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;
}
av_assert2(k <= 13);
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 *s, uint8_t *src, int w, int h,
int stride, int plane_index, int pixel_stride)
{
int x, y, i, ret;
const int ring_size = s->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->bits_per_raw_sample <= 8) {
for (x = 0; x < w; x++)
sample[0][x] = src[x * pixel_stride + stride * y];
if((ret = encode_line(s, w, sample, plane_index, 8)) < 0)
return ret;
} else {
if (s->packed_at_lsb) {
for (x = 0; x < w; x++) {
sample[0][x] = ((uint16_t*)(src + stride*y))[x];
}
} else {
for (x = 0; x < w; x++) {
sample[0][x] = ((uint16_t*)(src + stride*y))[x] >> (16 - s->bits_per_raw_sample);
}
}
if((ret = encode_line(s, w, sample, plane_index, s->bits_per_raw_sample)) < 0)
return ret;
}
// STOP_TIMER("encode line") }
}
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 < 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 == 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_table);
} else if (f->version < 3) {
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->context_model);
}
}
}
}
static int write_extradata(FFV1Context *f)
{
RangeCoder *const c = &f->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 = 2;
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++) {
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);
}
}
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);
v = av_crc(av_crc_get_table(AV_CRC_32_IEEE), 0, f->avctx->extradata, f->avctx->extradata_size);
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 av_cold int encode_init(AVCodecContext *avctx)
{
FFV1Context *s = avctx->priv_data;
const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(avctx->pix_fmt);
int i, j, k, m, ret;
if ((ret = ff_ffv1_common_init(avctx)) < 0)
return ret;
s->version = 0;
if ((avctx->flags & (AV_CODEC_FLAG_PASS1 | AV_CODEC_FLAG_PASS2)) ||
avctx->slices > 1)
s->version = FFMAX(s->version, 2);
// 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) {
s->ec = (s->version >= 3);
}
if ((s->version == 2 || s->version>3) && avctx->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) {
av_log(avctx, AV_LOG_ERROR, "Version 2 needed for requested features but version 2 is experimental and not enabled\n");
return AVERROR_INVALIDDATA;
}
#if FF_API_CODER_TYPE
FF_DISABLE_DEPRECATION_WARNINGS
if (avctx->coder_type != -1)
s->ac = avctx->coder_type > 0 ? AC_RANGE_CUSTOM_TAB : AC_GOLOMB_RICE;
else
FF_ENABLE_DEPRECATION_WARNINGS
#endif
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;
s->plane_count = 3;
switch(avctx->pix_fmt) {
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_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_YUV420P12:
case AV_PIX_FMT_YUV422P12:
s->packed_at_lsb = 1;
if (!avctx->bits_per_raw_sample && !s->bits_per_raw_sample)
s->bits_per_raw_sample = 12;
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->nb_components == 4 || desc->nb_components == 2;
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_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:
if (!avctx->bits_per_raw_sample && !s->bits_per_raw_sample)
s->bits_per_raw_sample = 10;
case AV_PIX_FMT_GBRP12:
if (!avctx->bits_per_raw_sample && !s->bits_per_raw_sample)
s->bits_per_raw_sample = 12;
case AV_PIX_FMT_GBRP14:
if (!avctx->bits_per_raw_sample && !s->bits_per_raw_sample)
s->bits_per_raw_sample = 14;
case AV_PIX_FMT_GBRP16:
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->colorspace = 1;
s->chroma_planes = 1;
if (s->bits_per_raw_sample >= 16) {
s->use32bit = 1;
if (avctx->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) {
av_log(avctx, AV_LOG_ERROR, "16bit RGB is experimental and under development, only use it for experiments\n");
return AVERROR_INVALIDDATA;
}
}
s->version = FFMAX(s->version, 1);
break;
default:
av_log(avctx, AV_LOG_ERROR, "format not supported\n");
return AVERROR(ENOSYS);
}
av_assert0(s->bits_per_raw_sample >= 8);
if (s->bits_per_raw_sample > 8) {
if (s->ac == AC_GOLOMB_RICE) {
av_log(avctx, AV_LOG_INFO,
"bits_per_raw_sample > 8, forcing range coder\n");
s->ac = AC_RANGE_CUSTOM_TAB;
}
}
if (s->transparency) {
av_log(avctx, AV_LOG_WARNING, "Storing alpha plane, this will require a recent FFV1 decoder to playback!\n");
}
#if FF_API_PRIVATE_OPT
FF_DISABLE_DEPRECATION_WARNINGS
if (avctx->context_model)
s->context_model = avctx->context_model;
if (avctx->context_model > 1U) {
av_log(avctx, AV_LOG_ERROR, "Invalid context model %d, valid values are 0 and 1\n", avctx->context_model);
return AVERROR(EINVAL);
}
FF_ENABLE_DEPRECATION_WARNINGS
#endif
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->bits_per_raw_sample <= 8) {
s->quant_tables[0][0][i]= quant11[i];
s->quant_tables[0][1][i]= 11*quant11[i];
s->quant_tables[0][2][i]= 11*11*quant11[i];
s->quant_tables[1][0][i]= quant11[i];
s->quant_tables[1][1][i]= 11*quant11[i];
s->quant_tables[1][2][i]= 11*11*quant5 [i];
s->quant_tables[1][3][i]= 5*11*11*quant5 [i];
s->quant_tables[1][4][i]= 5*5*11*11*quant5 [i];
} else {
s->quant_tables[0][0][i]= quant9_10bit[i];
s->quant_tables[0][1][i]= 11*quant9_10bit[i];
s->quant_tables[0][2][i]= 11*11*quant9_10bit[i];
s->quant_tables[1][0][i]= quant9_10bit[i];
s->quant_tables[1][1][i]= 11*quant9_10bit[i];
s->quant_tables[1][2][i]= 11*11*quant5_10bit[i];
s->quant_tables[1][3][i]= 5*11*11*quant5_10bit[i];
s->quant_tables[1][4][i]= 5*5*11*11*quant5_10bit[i];
}
}
s->context_count[0] = (11 * 11 * 11 + 1) / 2;
s->context_count[1] = (11 * 11 * 5 * 5 * 5 + 1) / 2;
memcpy(s->quant_table, s->quant_tables[s->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 = s->context_model;
p->context_count = s->context_count[p->quant_table_index];
}
if ((ret = ff_ffv1_allocate_initial_states(s)) < 0)
return ret;
#if FF_API_CODED_FRAME
FF_DISABLE_DEPRECATION_WARNINGS
avctx->coded_frame->pict_type = AV_PICTURE_TYPE_I;
FF_ENABLE_DEPRECATION_WARNINGS
#endif
if (!s->transparency)
s->plane_count = 2;
if (!s->chroma_planes && s->version > 3)
s->plane_count--;
ret = av_pix_fmt_get_chroma_sub_sample (avctx->pix_fmt, &s->chroma_h_shift, &s->chroma_v_shift);
if (ret)
return ret;
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++; jp<j; jp++)
s->initial_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) {
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 (avctx->slices == s->num_h_slices * s->num_v_slices && avctx->slices <= MAX_SLICES || !avctx->slices)
goto slices_ok;
}
}
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);
slices_ok:
if ((ret = write_extradata(s)) < 0)
return ret;
}
if ((ret = ff_ffv1_init_slice_contexts(s)) < 0)
return ret;
s->slice_count = s->max_slice_count;
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 (i = 0; i < s->quant_table_count; i++)
for (j = 0; j < s->max_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 void encode_slice_header(FFV1Context *f, FFV1Context *fs)
{
RangeCoder *c = &fs->c;
uint8_t state[CONTEXT_SIZE];
int j;
memset(state, 128, sizeof(state));
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->context_model);
}
if (!f->picture.f->interlaced_frame)
put_symbol(c, state, 3, 0);
else
put_symbol(c, state, 1 + !f->picture.f->top_field_first, 0);
put_symbol(c, state, f->picture.f->sample_aspect_ratio.num, 0);
put_symbol(c, state, f->picture.f->sample_aspect_ratio.den, 0);
if (f->version > 3) {
put_rac(c, state, fs->slice_coding_mode == 1);
if (fs->slice_coding_mode == 1)
ff_ffv1_clear_slice_state(f, fs);
put_symbol(c, state, fs->slice_coding_mode, 0);
if (fs->slice_coding_mode != 1) {
put_symbol(c, state, fs->slice_rct_by_coef, 0);
put_symbol(c, state, fs->slice_rct_ry_coef, 0);
}
}
}
static void choose_rct_params(FFV1Context *fs, 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 = fs->bits_per_raw_sample <= 8;
for (y = 0; y < h; y++) {
int lastr=0, lastg=0, lastb=0;
for (p = 0; p < 3; p++)
sample[p] = fs->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 {
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<NB_Y_COEFF; i++) {
stat[i] += FFABS(bg + ((br*rct_y_coeff[i][0] + bb*rct_y_coeff[i][1])>>2));
}
}
sample[0][x] = ag;
sample[1][x] = ab;
sample[2][x] = ar;
lastr = r;
lastg = g;
lastb = b;
}
}
best = 0;
for (i=1; i<NB_Y_COEFF; i++) {
if (stat[i] < stat[best])
best = i;
}
fs->slice_rct_by_coef = rct_y_coeff[best][1];
fs->slice_rct_ry_coef = rct_y_coeff[best][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;
const AVFrame *const p = f->picture.f;
const int ps = av_pix_fmt_desc_get(c->pix_fmt)->comp[0].step;
int ret;
RangeCoder c_bak = fs->c;
const uint8_t *planes[3] = {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};
fs->slice_coding_mode = 0;
if (f->version > 3) {
choose_rct_params(fs, planes, p->linesize, width, height);
} else {
fs->slice_rct_by_coef = 1;
fs->slice_rct_ry_coef = 1;
}
retry:
if (f->key_frame)
ff_ffv1_clear_slice_state(f, fs);
if (f->version > 2) {
encode_slice_header(f, fs);
}
if (fs->ac == AC_GOLOMB_RICE) {
if (f->version > 2)
put_rac(&fs->c, (uint8_t[]) { 129 }, 0);
fs->ac_byte_count = f->version > 2 || (!x && !y) ? ff_rac_terminate(&fs->c) : 0;
init_put_bits(&fs->pb,
fs->c.bytestream_start + fs->ac_byte_count,
fs->c.bytestream_end - fs->c.bytestream_start - fs->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(fs, p->data[0] + ps*x + y*p->linesize[0], width, height, p->linesize[0], 0, 1);
if (f->chroma_planes) {
ret |= encode_plane(fs, p->data[1] + ps*cx+cy*p->linesize[1], chroma_width, chroma_height, p->linesize[1], 1, 1);
ret |= encode_plane(fs, p->data[2] + ps*cx+cy*p->linesize[2], chroma_width, chroma_height, p->linesize[2], 1, 1);
}
if (fs->transparency)
ret |= encode_plane(fs, p->data[3] + ps*x + y*p->linesize[3], width, height, p->linesize[3], 2, 1);
} else if (c->pix_fmt == AV_PIX_FMT_YA8) {
ret = encode_plane(fs, p->data[0] + ps*x + y*p->linesize[0], width, height, p->linesize[0], 0, 2);
ret |= encode_plane(fs, p->data[0] + 1 + ps*x + y*p->linesize[0], width, height, p->linesize[0], 1, 2);
} else if (f->use32bit) {
ret = encode_rgb_frame32(fs, planes, width, height, p->linesize);
} else {
ret = encode_rgb_frame(fs, planes, width, height, p->linesize);
}
emms_c();
if (ret < 0) {
av_assert0(fs->slice_coding_mode == 0);
if (fs->version < 4 || !fs->ac) {
av_log(c, AV_LOG_ERROR, "Buffer too small\n");
return ret;
}
av_log(c, AV_LOG_DEBUG, "Coding slice as PCM\n");
fs->slice_coding_mode = 1;
fs->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->slice_context[0]->c;
AVFrame *const p = f->picture.f;
uint8_t keystate = 128;
uint8_t *buf_p;
int i, ret;
int64_t maxsize = AV_INPUT_BUFFER_MIN_SIZE
+ avctx->width*avctx->height*37LL*4;
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++) {
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);
}
return 0;
}
if (f->version > 3)
maxsize = AV_INPUT_BUFFER_MIN_SIZE + avctx->width*avctx->height*3LL*4;
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_packet2(avctx, pkt, maxsize, 0)) < 0)
return ret;
ff_init_range_encoder(c, pkt->data, pkt->size);
ff_build_rac_states(c, 0.05 * (1LL << 32), 256 - 8);
av_frame_unref(p);
if ((ret = av_frame_ref(p, pict)) < 0)
return ret;
#if FF_API_CODED_FRAME
FF_DISABLE_DEPRECATION_WARNINGS
avctx->coded_frame->pict_type = AV_PICTURE_TYPE_I;
FF_ENABLE_DEPRECATION_WARNINGS
#endif
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++) {
FFV1Context *fs = f->slice_context[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(&fs->c, start, len);
} else {
av_assert0(fs->c.bytestream_end >= fs->c.bytestream_start + len);
av_assert0(fs->c.bytestream < fs->c.bytestream_start + len);
fs->c.bytestream_end = fs->c.bytestream_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 != AC_GOLOMB_RICE) {
uint8_t state = 129;
put_rac(&fs->c, &state, 0);
bytes = ff_rac_terminate(&fs->c);
} else {
flush_put_bits(&fs->pb); // FIXME: nicer padding
bytes = fs->ac_byte_count + (put_bits_count(&fs->pb) + 7) / 8;
}
if (i > 0 || f->version > 2) {
av_assert0(bytes < pkt->size / f->slice_count);
memmove(buf_p, fs->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), 0, buf_p, bytes);
AV_WL32(buf_p + bytes, v);
bytes += 4;
}
buf_p += bytes;
}
if (avctx->flags & AV_CODEC_FLAG_PASS1)
avctx->stats_out[0] = '\0';
#if FF_API_CODED_FRAME
FF_DISABLE_DEPRECATION_WARNINGS
avctx->coded_frame->key_frame = f->key_frame;
FF_ENABLE_DEPRECATION_WARNINGS
#endif
f->picture_number++;
pkt->size = buf_p - pkt->data;
pkt->pts =
pkt->dts = pict->pts;
pkt->flags |= AV_PKT_FLAG_KEY * f->key_frame;
*got_packet = 1;
return 0;
}
static av_cold int encode_close(AVCodecContext *avctx)
{
ff_ffv1_close(avctx);
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_BOOL, { .i64 = -1 }, -1, 1, VE },
{ "coder", "Coder type", OFFSET(ac), AV_OPT_TYPE_INT,
{ .i64 = 0 }, -2, 2, VE, "coder" },
{ "rice", "Golomb rice", 0, AV_OPT_TYPE_CONST,
{ .i64 = AC_GOLOMB_RICE }, INT_MIN, INT_MAX, VE, "coder" },
{ "range_def", "Range with default table", 0, AV_OPT_TYPE_CONST,
{ .i64 = AC_RANGE_DEFAULT_TAB_FORCE }, INT_MIN, INT_MAX, VE, "coder" },
{ "range_tab", "Range with custom table", 0, AV_OPT_TYPE_CONST,
{ .i64 = AC_RANGE_CUSTOM_TAB }, INT_MIN, INT_MAX, VE, "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, "coder" },
{ "context", "Context model", OFFSET(context_model), AV_OPT_TYPE_INT,
{ .i64 = 0 }, 0, 1, VE },
{ NULL }
};
static const AVClass ffv1_class = {
.class_name = "ffv1 encoder",
.item_name = av_default_item_name,
.option = options,
.version = LIBAVUTIL_VERSION_INT,
};
#if FF_API_CODER_TYPE
static const AVCodecDefault ffv1_defaults[] = {
{ "coder", "-1" },
{ NULL },
};
#endif
AVCodec ff_ffv1_encoder = {
.name = "ffv1",
.long_name = NULL_IF_CONFIG_SMALL("FFmpeg video codec #1"),
.type = AVMEDIA_TYPE_VIDEO,
.id = AV_CODEC_ID_FFV1,
.priv_data_size = sizeof(FFV1Context),
.init = encode_init,
.encode2 = encode_frame,
.close = encode_close,
.capabilities = AV_CODEC_CAP_SLICE_THREADS | AV_CODEC_CAP_DELAY,
.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_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_YA8,
AV_PIX_FMT_GRAY10, AV_PIX_FMT_GRAY12,
AV_PIX_FMT_GBRP16, AV_PIX_FMT_RGB48,
AV_PIX_FMT_NONE
},
#if FF_API_CODER_TYPE
.defaults = ffv1_defaults,
#endif
.priv_class = &ffv1_class,
};
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