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FFmpeg/libavcodec/ffv1enc.c
Michael Niedermayer abe76b851c ffv1enc: Make ffv1.3 non experimental 
The fate tests change as they used 1.2 previously
The increased size is due to:
32bit CRCs per slice by default (can be disabled),
it adds slice headers to allow decoding one slice without the others
an additional slice size field is added to make it possible to find
slices within corrupted surroundings.

these add up to about 57bit per slice more
at 50 frames and 4 slices thats 1425 byte

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
2013-08-26 17:33:53 +02:00

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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;
for (k = 0; k < 256; k++) {
double newocc[256] = { 0 };
for (m = 1; m < 256; m++)
if (occ[m]) {
len -=occ[m]*( p *l2tab[ m]
+ (1-p)*l2tab[256-m]);
}
if (len < best_len[k]) {
best_len[k] = len;
best_state[i][k] = j;
}
for (m = 0; m < 256; m++)
if (occ[m]) {
newocc[ one_state[ m]] += occ[m] * p;
newocc[256 - one_state[256 - m]] += occ[m] * (1 - p);
}
memcpy(occ, newocc, sizeof(occ));
}
}
}
}
static av_always_inline av_flatten void put_symbol_inline(RangeCoder *c,
uint8_t *state, int v,
int is_signed,
uint64_t rc_stat[256][2],
uint64_t rc_stat2[32][2])
{
int i;
#define put_rac(C, S, B) \
do { \
if (rc_stat) { \
rc_stat[*(S)][B]++; \
rc_stat2[(S) - state][B]++; \
} \
put_rac(C, S, B); \
} while (0)
if (v) {
const int a = FFABS(v);
const int e = av_log2(a);
put_rac(c, state + 0, 0);
if (e <= 9) {
for (i = 0; i < e; i++)
put_rac(c, state + 1 + i, 1); // 1..10
put_rac(c, state + 1 + i, 0);
for (i = e - 1; i >= 0; i--)
put_rac(c, state + 22 + i, (a >> i) & 1); // 22..31
if (is_signed)
put_rac(c, state + 11 + e, v < 0); // 11..21
} else {
for (i = 0; i < e; i++)
put_rac(c, state + 1 + FFMIN(i, 9), 1); // 1..10
put_rac(c, state + 1 + 9, 0);
for (i = e - 1; i >= 0; i--)
put_rac(c, state + 22 + FFMIN(i, 9), (a >> i) & 1); // 22..31
if (is_signed)
put_rac(c, state + 11 + 10, v < 0); // 11..21
}
} else {
put_rac(c, state + 0, 1);
}
#undef put_rac
}
static 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);
#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 AVERROR_INVALIDDATA;
}
} 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 AVERROR_INVALIDDATA;
}
}
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->bits_per_raw_sample <= 8) {
for (x = 0; x < w; x++)
sample[0][x] = src[x + stride * y];
encode_line(s, w, sample, plane_index, 8);
} else {
if (s->packed_at_lsb) {
for (x = 0; x < w; x++) {
sample[0][x] = ((uint16_t*)(src + stride*y))[x];
}
} else {
for (x = 0; x < w; x++) {
sample[0][x] = ((uint16_t*)(src + stride*y))[x] >> (16 - s->bits_per_raw_sample);
}
}
encode_line(s, w, sample, plane_index, s->bits_per_raw_sample);
}
// STOP_TIMER("encode line") }
}
}
static void encode_rgb_frame(FFV1Context *s, uint8_t *src[3], int w, int h, int stride[3])
{
int x, y, p, i;
const int ring_size = s->avctx->context_model ? 3 : 2;
int16_t *sample[4][3];
int lbd = s->bits_per_raw_sample <= 8;
int bits = s->bits_per_raw_sample > 0 ? s->bits_per_raw_sample : 8;
int offset = 1 << bits;
s->run_index = 0;
memset(s->sample_buffer, 0, ring_size * MAX_PLANES *
(w + 6) * sizeof(*s->sample_buffer));
for (y = 0; y < h; y++) {
for (i = 0; i < ring_size; i++)
for (p = 0; p < MAX_PLANES; 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 b, g, r, av_uninit(a);
if (lbd) {
unsigned v = *((uint32_t*)(src[0] + x*4 + stride[0]*y));
b = v & 0xFF;
g = (v >> 8) & 0xFF;
r = (v >> 16) & 0xFF;
a = v >> 24;
} else {
b = *((uint16_t*)(src[0] + x*2 + stride[0]*y));
g = *((uint16_t*)(src[1] + x*2 + stride[1]*y));
r = *((uint16_t*)(src[2] + x*2 + stride[2]*y));
}
b -= g;
r -= g;
g += (b + r) >> 2;
b += offset;
r += offset;
sample[0][0][x] = g;
sample[1][0][x] = b;
sample[2][0][x] = r;
sample[3][0][x] = a;
}
for (p = 0; p < 3 + s->transparency; p++) {
sample[p][0][-1] = sample[p][1][0 ];
sample[p][1][ w] = sample[p][1][w-1];
if (lbd)
encode_line(s, w, sample[p], (p + 1) / 2, 9);
else
encode_line(s, w, sample[p], (p + 1) / 2, bits + 1);
}
}
}
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->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->avctx->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);
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;
put_symbol(c, state, f->micro_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->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 = ffv1_common_init(avctx)) < 0)
return ret;
s->version = 0;
if ((avctx->flags & (CODEC_FLAG_PASS1|CODEC_FLAG_PASS2)) || avctx->slices>1)
s->version = FFMAX(s->version, 2);
if (avctx->level == 3 || (avctx->level <= 0 && s->version == 2)) {
s->version = 3;
}
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;
}
s->ac = avctx->coder_type > 0 ? 2 : 0;
s->plane_count = 3;
switch(avctx->pix_fmt) {
case AV_PIX_FMT_YUV444P9:
case AV_PIX_FMT_YUV422P9:
case AV_PIX_FMT_YUV420P9:
if (!avctx->bits_per_raw_sample)
s->bits_per_raw_sample = 9;
case AV_PIX_FMT_YUV444P10:
case AV_PIX_FMT_YUV420P10:
case AV_PIX_FMT_YUV422P10:
s->packed_at_lsb = 1;
if (!avctx->bits_per_raw_sample && !s->bits_per_raw_sample)
s->bits_per_raw_sample = 10;
case AV_PIX_FMT_GRAY16:
case AV_PIX_FMT_YUV444P16:
case AV_PIX_FMT_YUV422P16:
case AV_PIX_FMT_YUV420P16:
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;
}
if (!s->ac && avctx->coder_type == -1) {
av_log(avctx, AV_LOG_INFO, "bits_per_raw_sample > 8, forcing coder 1\n");
s->ac = 2;
}
if (!s->ac) {
av_log(avctx, AV_LOG_ERROR, "bits_per_raw_sample of more than 8 needs -coder 1 currently\n");
return AVERROR(ENOSYS);
}
s->version = FFMAX(s->version, 1);
case AV_PIX_FMT_GRAY8:
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:
s->chroma_planes = desc->nb_components < 3 ? 0 : 1;
s->colorspace = 0;
break;
case AV_PIX_FMT_YUVA444P:
case AV_PIX_FMT_YUVA422P:
case AV_PIX_FMT_YUVA420P:
s->chroma_planes = 1;
s->colorspace = 0;
s->transparency = 1;
break;
case AV_PIX_FMT_RGB32:
s->colorspace = 1;
s->transparency = 1;
s->chroma_planes = 1;
break;
case AV_PIX_FMT_0RGB32:
s->colorspace = 1;
s->chroma_planes = 1;
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;
else if (!s->bits_per_raw_sample)
s->bits_per_raw_sample = avctx->bits_per_raw_sample;
s->colorspace = 1;
s->chroma_planes = 1;
s->version = FFMAX(s->version, 1);
break;
default:
av_log(avctx, AV_LOG_ERROR, "format not supported\n");
return AVERROR(ENOSYS);
}
if (s->transparency) {
av_log(avctx, AV_LOG_WARNING, "Storing alpha plane, this will require a recent FFV1 decoder to playback!\n");
}
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);
}
if (s->ac > 1)
for (i = 1; i < 256; i++)
s->state_transition[i] = ver2_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[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 ((ret = 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--;
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 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);
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");
return AVERROR_INVALIDDATA;
}
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 (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((a + b) / gob_count, 0, 255)];
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((a + b) / gob_count, 0, 255)];
}
}
}
}
if (s->version > 1) {
s->num_v_slices = (avctx->width > 352 || avctx->height > 288 || !avctx->slices) ? 2 : 1;
for (; s->num_v_slices < 9; 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++) {
if (avctx->slices == s->num_h_slices * s->num_v_slices && avctx->slices <= 64 || !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 = ffv1_init_slice_contexts(s)) < 0)
return ret;
if ((ret = ffv1_init_slices_state(s)) < 0)
return ret;
#define STATS_OUT_SIZE 1024 * 1024 * 6
if (avctx->flags & 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->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->avctx->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);
}
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.f;
const int ps = av_pix_fmt_desc_get(c->pix_fmt)->comp[0].step_minus1 + 1;
if (p->key_frame)
ffv1_clear_slice_state(f, fs);
if (f->version > 2) {
encode_slice_header(f, fs);
}
if (!fs->ac) {
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) {
const int chroma_width = FF_CEIL_RSHIFT(width, f->chroma_h_shift);
const int chroma_height = FF_CEIL_RSHIFT(height, f->chroma_v_shift);
const int cx = x >> f->chroma_h_shift;
const int cy = y >> f->chroma_v_shift;
encode_plane(fs, p->data[0] + ps*x + y*p->linesize[0], width, height, p->linesize[0], 0);
if (f->chroma_planes) {
encode_plane(fs, p->data[1] + ps*cx+cy*p->linesize[1], chroma_width, chroma_height, p->linesize[1], 1);
encode_plane(fs, p->data[2] + ps*cx+cy*p->linesize[2], chroma_width, chroma_height, p->linesize[2], 1);
}
if (fs->transparency)
encode_plane(fs, p->data[3] + ps*x + y*p->linesize[3], width, height, p->linesize[3], 2);
} else {
uint8_t *planes[3] = {p->data[0] + ps*x + y*p->linesize[0],
p->data[1] + ps*x + y*p->linesize[1],
p->data[2] + ps*x + y*p->linesize[2]};
encode_rgb_frame(fs, planes, width, height, p->linesize);
}
emms_c();
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;
int used_count = 0;
uint8_t keystate = 128;
uint8_t *buf_p;
int i, ret;
if ((ret = ff_alloc_packet2(avctx, pkt, avctx->width*avctx->height*((8*2+1+1)*4)/8
+ FF_MIN_BUFFER_SIZE)) < 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;
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);
} else {
put_rac(c, &keystate, 0);
p->key_frame = 0;
}
if (f->ac > 1) {
int i;
for (i = 1; i < 256; i++) {
c->one_state[i] = f->state_transition[i];
c->zero_state[256 - i] = 256 - c->one_state[i];
}
}
for (i = 1; i < f->slice_count; i++) {
FFV1Context *fs = f->slice_context[i];
uint8_t *start = pkt->data + (pkt->size - used_count) * (int64_t)i / f->slice_count;
int len = pkt->size / f->slice_count;
ff_init_range_encoder(&fs->c, 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 = 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 & 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;
}
#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, 1, VE },
{ NULL }
};
static const AVClass ffv1_class = {
.class_name = "ffv1 encoder",
.item_name = av_default_item_name,
.option = options,
.version = LIBAVUTIL_VERSION_INT,
};
static const AVCodecDefault ffv1_defaults[] = {
{ "coder", "-1" },
{ NULL },
};
AVCodec ff_ffv1_encoder = {
.name = "ffv1",
.type = AVMEDIA_TYPE_VIDEO,
.id = AV_CODEC_ID_FFV1,
.priv_data_size = sizeof(FFV1Context),
.init = encode_init,
.encode2 = encode_frame,
.close = ffv1_close,
.capabilities = CODEC_CAP_SLICE_THREADS,
.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_GRAY16, AV_PIX_FMT_GRAY8, AV_PIX_FMT_GBRP9, AV_PIX_FMT_GBRP10,
AV_PIX_FMT_GBRP12, AV_PIX_FMT_GBRP14,
AV_PIX_FMT_NONE
},
.long_name = NULL_IF_CONFIG_SMALL("FFmpeg video codec #1"),
.defaults = ffv1_defaults,
.priv_class = &ffv1_class,
};
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