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ffv1: update to ffv1 version 3

Browse Source 
Based on code from Carl Eugen Hoyos, Michael Niedermayer and Paul B Mahol.
This commit is contained in:
Luca Barbato 2012-10-19 12:14:22 +02:00
parent 4a2a4524a3
commit 0f13cd3187
4 changed files with 803 additions and 279 deletions
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96
libavcodec/ffv1.c
View File

@ -138,12 +138,16 @@ int ffv1_common_init(AVCodecContext *avctx)
s->avctx = avctx;
s->flags = avctx->flags;
if (!avctx->width || !avctx->height)
return AVERROR_INVALIDDATA;
avcodec_get_frame_defaults(&s->picture);
ff_dsputil_init(&s->dsp, avctx);
s->width = avctx->width;
s->height = avctx->height;
assert(s->width && s->height);
// defaults
s->num_h_slices = 1;
s->num_v_slices = 1;
@ -151,35 +155,34 @@ int ffv1_common_init(AVCodecContext *avctx)
return 0;
}
int ffv1_init_slice_state(FFV1Context *f)
int ffv1_init_slice_state(FFV1Context *f, FFV1Context *fs)
{
int i, j;
int j;
for (i = 0; i < f->slice_count; i++) {
FFV1Context *fs = f->slice_context[i];
for (j = 0; j < f->plane_count; j++) {
PlaneContext *const p = &fs->plane[j];
fs->plane_count = f->plane_count;
fs->transparency = f->transparency;
for (j = 0; j < f->plane_count; j++) {
PlaneContext *const p = &fs->plane[j];
if (fs->ac) {
if (!p->state)
p->state = av_malloc(CONTEXT_SIZE * p->context_count *
sizeof(uint8_t));
if (!p->state)
return AVERROR(ENOMEM);
} else {
if (!p->vlc_state)
p->vlc_state = av_malloc(p->context_count * sizeof(VlcState));
if (!p->vlc_state)
return AVERROR(ENOMEM);
}
if (fs->ac) {
if (!p->state)
p->state = av_malloc(CONTEXT_SIZE * p->context_count *
sizeof(uint8_t));
if (!p->state)
return AVERROR(ENOMEM);
} else {
if (!p->vlc_state)
p->vlc_state = av_malloc(p->context_count * sizeof(VlcState));
if (!p->vlc_state)
return AVERROR(ENOMEM);
}
}
if (fs->ac > 1) {
// FIXME: only redo if state_transition changed
for (j = 1; j < 256; j++) {
fs->c.one_state[j] = fs->state_transition[j];
fs->c.zero_state[256 - j] = 256 - fs->c.one_state[j];
}
if (fs->ac > 1) {
//FIXME only redo if state_transition changed
for (j = 1; j < 256; j++) {
fs->c.one_state[j] = f->state_transition[j];
fs->c.zero_state[256 - j] = 256 - fs->c.one_state[j];
}
}
@ -209,7 +212,7 @@ av_cold int ffv1_init_slice_contexts(FFV1Context *f)
fs->slice_x = sxs;
fs->slice_y = sys;
fs->sample_buffer = av_malloc(9 * (fs->width + 6) *
fs->sample_buffer = av_malloc(3 * MAX_PLANES * (fs->width + 6) *
sizeof(*fs->sample_buffer));
if (!fs->sample_buffer)
return AVERROR(ENOMEM);
@ -232,31 +235,28 @@ int ffv1_allocate_initial_states(FFV1Context *f)
return 0;
}
void ffv1_clear_state(FFV1Context *f)
void ffv1_clear_slice_state(FFV1Context *f, FFV1Context *fs)
{
int i, si, j;
int i, j;
for (si = 0; si < f->slice_count; si++) {
FFV1Context *fs = f->slice_context[si];
for (i = 0; i < f->plane_count; i++) {
PlaneContext *p = &fs->plane[i];
for (i = 0; i < f->plane_count; i++) {
PlaneContext *p = &fs->plane[i];
p->interlace_bit_state[0] = 128;
p->interlace_bit_state[1] = 128;
p->interlace_bit_state[0] = 128;
p->interlace_bit_state[1] = 128;
if (fs->ac) {
if (f->initial_states[p->quant_table_index]) {
memcpy(p->state, f->initial_states[p->quant_table_index],
CONTEXT_SIZE * p->context_count);
} else
memset(p->state, 128, CONTEXT_SIZE * p->context_count);
} else {
for (j = 0; j < p->context_count; j++) {
p->vlc_state[j].drift = 0;
p->vlc_state[j].error_sum = 4; // FFMAX((RANGE + 32)/64, 2);
p->vlc_state[j].bias = 0;
p->vlc_state[j].count = 1;
}
if (fs->ac) {
if (f->initial_states[p->quant_table_index]) {
memcpy(p->state, f->initial_states[p->quant_table_index],
CONTEXT_SIZE * p->context_count);
} else
memset(p->state, 128, CONTEXT_SIZE * p->context_count);
} else {
for (j = 0; j < p->context_count; j++) {
p->vlc_state[j].drift = 0;
p->vlc_state[j].error_sum = 4; //FFMAX((RANGE + 32)/64, 2);
p->vlc_state[j].bias = 0;
p->vlc_state[j].count = 1;
}
}
}
@ -269,6 +269,8 @@ av_cold int ffv1_close(AVCodecContext *avctx)
if (avctx->codec->decode && s->picture.data[0])
avctx->release_buffer(avctx, &s->picture);
if (avctx->codec->decode && s->last_picture.data[0])
avctx->release_buffer(avctx, &s->last_picture);
for (j = 0; j < s->slice_count; j++) {
FFV1Context *fs = s->slice_context[j];

22
libavcodec/ffv1.h
View File

@ -1,7 +1,7 @@
/*
* FFV1 codec for libavcodec
*
* Copyright (c) 2012 Michael Niedermayer <michaelni@gmx.at>
* Copyright (c) 2003-2012 Michael Niedermayer <michaelni@gmx.at>
*
* This file is part of Libav.
*
@ -57,6 +57,7 @@ typedef struct PlaneContext {
#define MAX_SLICES 256
typedef struct FFV1Context {
AVClass *class;
AVCodecContext *avctx;
RangeCoder c;
GetBitContext gb;
@ -64,13 +65,17 @@ typedef struct FFV1Context {
uint64_t rc_stat[256][2];
uint64_t (*rc_stat2[MAX_QUANT_TABLES])[32][2];
int version;
int minor_version;
int width, height;
int chroma_planes;
int chroma_h_shift, chroma_v_shift;
int transparency;
int flags;
int picture_number;
AVFrame picture;
AVFrame picture, last_picture;
int plane_count;
int ac; // 1 = range coder <-> 0 = golomb rice
int ac_byte_count; // number of bytes used for AC coding
PlaneContext plane[MAX_PLANES];
int16_t quant_table[MAX_CONTEXT_INPUTS][256];
int16_t quant_tables[MAX_QUANT_TABLES][MAX_CONTEXT_INPUTS][256];
@ -80,8 +85,15 @@ typedef struct FFV1Context {
int run_index;
int colorspace;
int16_t *sample_buffer;
int gob_count;
int ec;
int slice_damaged;
int key_frame_ok;
int bits_per_raw_sample;
int packed_at_lsb;
int gob_count;
int quant_table_count;
DSPContext dsp;
@ -175,10 +187,10 @@ static inline void update_vlc_state(VlcState *const state, const int v)
}
int ffv1_common_init(AVCodecContext *avctx);
int ffv1_init_slice_state(FFV1Context *f);
int ffv1_init_slice_state(FFV1Context *f, FFV1Context *fs);
int ffv1_init_slice_contexts(FFV1Context *f);
int ffv1_allocate_initial_states(FFV1Context *f);
void ffv1_clear_state(FFV1Context *f);
void ffv1_clear_slice_state(FFV1Context *f, FFV1Context *fs);
int ffv1_close(AVCodecContext *avctx);
#endif /* AVCODEC_FFV1_H */

533
libavcodec/ffv1dec.c
View File

@ -1,7 +1,7 @@
/*
* FFV1 decoder
*
* Copyright (c) 2003 Michael Niedermayer <michaelni@gmx.at>
* Copyright (c) 2003-2012 Michael Niedermayer <michaelni@gmx.at>
*
* This file is part of Libav.
*
@ -26,6 +26,10 @@
*/
#include "libavutil/avassert.h"
#include "libavutil/pixdesc.h"
#include "libavutil/crc.h"
#include "libavutil/opt.h"
#include "libavutil/imgutils.h"
#include "avcodec.h"
#include "get_bits.h"
#include "put_bits.h"
@ -192,86 +196,206 @@ static void decode_plane(FFV1Context *s, uint8_t *src,
} else {
decode_line(s, w, sample, plane_index,
s->avctx->bits_per_raw_sample);
for (x = 0; x < w; x++)
((uint16_t *)(src + stride * y))[x] =
sample[1][x] << (16 - s->avctx->bits_per_raw_sample);
if (s->packed_at_lsb) {
for (x = 0; x < w; x++)
((uint16_t *)(src + stride * y))[x] = sample[1][x];
} else {
for (x = 0; x < w; x++)
((uint16_t *)(src + stride * y))[x] = sample[1][x] << (16 - s->avctx->bits_per_raw_sample);
}
}
// STOP_TIMER("decode-line") }
}
}
static void decode_rgb_frame(FFV1Context *s, uint32_t *src,
int w, int h, int stride)
static void decode_rgb_frame(FFV1Context *s, uint8_t *src[3], int w, int h,
int stride[3])
{
int x, y, p;
int16_t *sample[3][2];
for (x = 0; x < 3; x++) {
int16_t *sample[4][2];
int lbd = s->avctx->bits_per_raw_sample <= 8;
int bits = s->avctx->bits_per_raw_sample > 0
? s->avctx->bits_per_raw_sample
: 8;
int offset = 1 << bits;
for (x = 0; x < 4; x++) {
sample[x][0] = s->sample_buffer + x * 2 * (w + 6) + 3;
sample[x][1] = s->sample_buffer + (x * 2 + 1) * (w + 6) + 3;
}
s->run_index = 0;
memset(s->sample_buffer, 0, 6 * (w + 6) * sizeof(*s->sample_buffer));
memset(s->sample_buffer, 0, 8 * (w + 6) * sizeof(*s->sample_buffer));
for (y = 0; y < h; y++) {
for (p = 0; p < 3; p++) {
int16_t *temp = sample[p][0]; // FIXME: try a normal buffer
for (p = 0; p < 3 + s->transparency; p++) {
int16_t *temp = sample[p][0]; //FIXME try a normal buffer
sample[p][0] = sample[p][1];
sample[p][1] = temp;
sample[p][1][-1] = sample[p][0][0];
sample[p][0][w] = sample[p][0][w - 1];
decode_line(s, w, sample[p], FFMIN(p, 1), 9);
if (lbd)
decode_line(s, w, sample[p], (p + 1) / 2, 9);
else
decode_line(s, w, sample[p], (p + 1) / 2, bits + 1);
}
for (x = 0; x < w; x++) {
int g = sample[0][1][x];
int b = sample[1][1][x];
int r = sample[2][1][x];
int a = sample[3][1][x];
// assert(g >= 0 && b >= 0 && r >= 0);
// assert(g < 256 && b < 512 && r < 512);
b -= 0x100;
r -= 0x100;
b -= offset;
r -= offset;
g -= (b + r) >> 2;
b += g;
r += g;
src[x + stride * y] = b + (g << 8) + (r << 16) + (0xFF << 24);
if (lbd)
*((uint32_t *)(src[0] + x * 4 + stride[0] * y)) = b +
(g << 8) + (r << 16) + (a << 24);
else {
*((uint16_t *)(src[0] + x * 2 + stride[0] * y)) = b;
*((uint16_t *)(src[1] + x * 2 + stride[1] * y)) = g;
*((uint16_t *)(src[2] + x * 2 + stride[2] * y)) = r;
}
}
}
}
static int decode_slice_header(FFV1Context *f, FFV1Context *fs)
{
RangeCoder *c = &fs->c;
uint8_t state[CONTEXT_SIZE];
unsigned ps, i, context_count;
memset(state, 128, sizeof(state));
av_assert0(f->version > 2);
fs->slice_x = get_symbol(c, state, 0) * f->width;
fs->slice_y = get_symbol(c, state, 0) * f->height;
fs->slice_width = (get_symbol(c, state, 0) + 1) * f->width + fs->slice_x;
fs->slice_height = (get_symbol(c, state, 0) + 1) * f->height + fs->slice_y;
fs->slice_x /= f->num_h_slices;
fs->slice_y /= f->num_v_slices;
fs->slice_width = fs->slice_width / f->num_h_slices - fs->slice_x;
fs->slice_height = fs->slice_height / f->num_v_slices - fs->slice_y;
if ((unsigned)fs->slice_width > f->width ||
(unsigned)fs->slice_height > f->height)
return AVERROR_INVALIDDATA;
if ((unsigned)fs->slice_x + (uint64_t)fs->slice_width > f->width ||
(unsigned)fs->slice_y + (uint64_t)fs->slice_height > f->height)
return AVERROR_INVALIDDATA;
for (i = 0; i < f->plane_count; i++) {
PlaneContext *const p = &fs->plane[i];
int idx = get_symbol(c, state, 0);
if (idx > (unsigned)f->quant_table_count) {
av_log(f->avctx, AV_LOG_ERROR, "quant_table_index out of range\n");
return AVERROR_INVALIDDATA;
}
p->quant_table_index = idx;
memcpy(p->quant_table, f->quant_tables[idx], sizeof(p->quant_table));
context_count = f->context_count[idx];
if (p->context_count < context_count) {
av_freep(&p->state);
av_freep(&p->vlc_state);
}
p->context_count = context_count;
}
ps = get_symbol(c, state, 0);
if (ps == 1) {
f->picture.interlaced_frame = 1;
f->picture.top_field_first = 1;
} else if (ps == 2) {
f->picture.interlaced_frame = 1;
f->picture.top_field_first = 0;
} else if (ps == 3) {
f->picture.interlaced_frame = 0;
}
f->picture.sample_aspect_ratio.num = get_symbol(c, state, 0);
f->picture.sample_aspect_ratio.den = get_symbol(c, state, 0);
return 0;
}
static int decode_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;
FFV1Context *fs = *(void **)arg;
FFV1Context *f = fs->avctx->priv_data;
int width, height, x, y, ret;
const int ps = (av_pix_fmt_desc_get(c->pix_fmt)->flags & PIX_FMT_PLANAR)
? (c->bits_per_raw_sample > 8) + 1
: 4;
AVFrame *const p = &f->picture;
if (f->version > 2) {
if (decode_slice_header(f, fs) < 0) {
fs->slice_damaged = 1;
return AVERROR_INVALIDDATA;
}
}
if ((ret = ffv1_init_slice_state(f, fs)) < 0)
return ret;
if (f->picture.key_frame)
ffv1_clear_slice_state(f, fs);
width = fs->slice_width;
height = fs->slice_height;
x = fs->slice_x;
y = fs->slice_y;
if (!fs->ac) {
if (f->version == 3 && f->minor_version > 1 || f->version > 3)
get_rac(&fs->c, (uint8_t[]) { 129 });
fs->ac_byte_count = f->version > 2 || (!x && !y) ? fs->c.bytestream - fs->c.bytestream_start - 1 : 0;
init_get_bits(&fs->gb, fs->c.bytestream_start + fs->ac_byte_count,
(fs->c.bytestream_end - fs->c.bytestream_start -
fs->ac_byte_count) * 8);
}
av_assert1(width && height);
if (f->colorspace == 0) {
const int chroma_width = -((-width) >> f->chroma_h_shift);
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;
decode_plane(fs, p->data[0] + ps * x + y * p->linesize[0], width,
height, p->linesize[0],
0);
decode_plane(fs, p->data[0] + x + y * p->linesize[0],
width, height, p->linesize[0], 0);
decode_plane(fs, p->data[1] + cx + cy * p->linesize[1],
chroma_width, chroma_height, p->linesize[1], 1);
decode_plane(fs, p->data[2] + cx + cy * p->linesize[1],
chroma_width, chroma_height, p->linesize[2], 1);
if (f->chroma_planes) {
decode_plane(fs, p->data[1] + ps * cx + cy * p->linesize[1],
chroma_width, chroma_height, p->linesize[1],
1);
decode_plane(fs, p->data[2] + ps * cx + cy * p->linesize[2],
chroma_width, chroma_height, p->linesize[2],
1);
}
if (fs->transparency)
decode_plane(fs, p->data[3] + ps * x + y * p->linesize[3], width,
height, p->linesize[3],
2);
} else {
decode_rgb_frame(fs,
(uint32_t *)p->data[0] + x + y * (p->linesize[0] / 4),
width, height, p->linesize[0] / 4);
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] };
decode_rgb_frame(fs, planes, width, height, p->linesize);
}
if (fs->ac && f->version > 2) {
int v;
get_rac(&fs->c, (uint8_t[]) { 129 });
v = fs->c.bytestream_end - fs->c.bytestream - 2 - 5 * f->ec;
if (v) {
av_log(f->avctx, AV_LOG_ERROR, "bytestream end mismatching by %d\n",
v);
fs->slice_damaged = 1;
}
}
emms_c();
@ -288,10 +412,10 @@ static int read_quant_table(RangeCoder *c, int16_t *quant_table, int scale)
memset(state, 128, sizeof(state));
for (v = 0; i < 128; v++) {
int len = get_symbol(c, state, 0) + 1;
unsigned len = get_symbol(c, state, 0) + 1;
if (len + i > 128)
return AVERROR_INVALIDDATA;
if (len > 128 - i)
return -1;
while (len--) {
quant_table[i] = scale * v;
@ -315,7 +439,7 @@ static int read_quant_tables(RangeCoder *c,
for (i = 0; i < 5; i++) {
context_count *= read_quant_table(c, quant_table[i], context_count);
if (context_count > 32768U) {
return AVERROR_INVALIDDATA;
return -1;
}
}
return (context_count + 1) / 2;
@ -325,7 +449,7 @@ static int read_extra_header(FFV1Context *f)
{
RangeCoder *const c = &f->c;
uint8_t state[CONTEXT_SIZE];
int i, j, k;
int i, j, k, ret;
uint8_t state2[32][CONTEXT_SIZE];
memset(state2, 128, sizeof(state2));
@ -335,19 +459,26 @@ static int read_extra_header(FFV1Context *f)
ff_build_rac_states(c, 0.05 * (1LL << 32), 256 - 8);
f->version = get_symbol(c, state, 0);
f->ac = f->avctx->coder_type = get_symbol(c, state, 0);
if (f->ac > 1)
if (f->version > 2) {
c->bytestream_end -= 4;
f->minor_version = get_symbol(c, state, 0);
}
f->ac = f->avctx->coder_type = get_symbol(c, state, 0);
if (f->ac > 1) {
for (i = 1; i < 256; i++)
f->state_transition[i] = get_symbol(c, state, 1) + c->one_state[i];
f->colorspace = get_symbol(c, state, 0); // YUV cs type
}
f->colorspace = get_symbol(c, state, 0); //YUV cs type
f->avctx->bits_per_raw_sample = get_symbol(c, state, 0);
get_rac(c, state); // no chroma = false
f->chroma_h_shift = get_symbol(c, state, 0);
f->chroma_v_shift = get_symbol(c, state, 0);
get_rac(c, state); // transparency plane
f->plane_count = 2;
f->num_h_slices = 1 + get_symbol(c, state, 0);
f->num_v_slices = 1 + get_symbol(c, state, 0);
f->chroma_planes = get_rac(c, state);
f->chroma_h_shift = get_symbol(c, state, 0);
f->chroma_v_shift = get_symbol(c, state, 0);
f->transparency = get_rac(c, state);
f->plane_count = 2 + f->transparency;
f->num_h_slices = 1 + get_symbol(c, state, 0);
f->num_v_slices = 1 + get_symbol(c, state, 0);
if (f->num_h_slices > (unsigned)f->width ||
f->num_v_slices > (unsigned)f->height) {
@ -356,62 +487,97 @@ static int read_extra_header(FFV1Context *f)
}
f->quant_table_count = get_symbol(c, state, 0);
if (f->quant_table_count > (unsigned)MAX_QUANT_TABLES)
return AVERROR_INVALIDDATA;
for (i = 0; i < f->quant_table_count; i++) {
f->context_count[i] = read_quant_tables(c, f->quant_tables[i]);
if (f->context_count[i] < 0) {
av_log(f->avctx, AV_LOG_ERROR, "read_quant_table error\n");
return f->context_count[i];
return AVERROR_INVALIDDATA;
}
}
if (ffv1_allocate_initial_states(f) < 0)
return AVERROR(ENOMEM);
if ((ret = ffv1_allocate_initial_states(f)) < 0)
return ret;
for (i = 0; i < f->quant_table_count; i++)
if (get_rac(c, state))
if (get_rac(c, state)) {
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;
f->initial_states[i][j][k] =
(pred + get_symbol(c, state2[k], 1)) & 0xFF;
}
}
if (f->version > 2) {
f->ec = get_symbol(c, state, 0);
}
if (f->version > 2) {
unsigned v;
v = av_crc(av_crc_get_table(AV_CRC_32_IEEE), 0,
f->avctx->extradata, f->avctx->extradata_size);
if (v) {
av_log(f->avctx, AV_LOG_ERROR, "CRC mismatch %X!\n", v);
return AVERROR_INVALIDDATA;
}
}
return 0;
}
static int read_header(FFV1Context *f)
{
uint8_t state[CONTEXT_SIZE];
int i, j, context_count;
int i, j, context_count = -1;
RangeCoder *const c = &f->slice_context[0]->c;
memset(state, 128, sizeof(state));
if (f->version < 2) {
f->version = get_symbol(c, state, 0);
f->ac = f->avctx->coder_type = get_symbol(c, state, 0);
if (f->ac > 1)
unsigned v = get_symbol(c, state, 0);
if (v > 1) {
av_log(f->avctx, AV_LOG_ERROR,
"invalid version %d in version 1 header\n", v);
return AVERROR_INVALIDDATA;
}
f->version = v;
f->ac = f->avctx->coder_type = get_symbol(c, state, 0);
if (f->ac > 1) {
for (i = 1; i < 256; i++)
f->state_transition[i] = get_symbol(c, state, 1) + c->one_state[i];
f->colorspace = get_symbol(c, state, 0); // YUV cs type
f->state_transition[i] =
get_symbol(c, state, 1) + c->one_state[i];
}
f->colorspace = get_symbol(c, state, 0); //YUV cs type
if (f->version > 0)
f->avctx->bits_per_raw_sample = get_symbol(c, state, 0);
get_rac(c, state); // no chroma = false
f->chroma_planes = get_rac(c, state);
f->chroma_h_shift = get_symbol(c, state, 0);
f->chroma_v_shift = get_symbol(c, state, 0);
get_rac(c, state); // transparency plane
f->plane_count = 2;
f->transparency = get_rac(c, state);
f->plane_count = 2 + f->transparency;
}
if (f->colorspace == 0) {
if (f->avctx->bits_per_raw_sample <= 8) {
if (!f->transparency && !f->chroma_planes) {
if (f->avctx->bits_per_raw_sample <= 8)
f->avctx->pix_fmt = AV_PIX_FMT_GRAY8;
else
f->avctx->pix_fmt = AV_PIX_FMT_GRAY16;
} else if (f->avctx->bits_per_raw_sample <= 8 && !f->transparency) {
switch (16 * f->chroma_h_shift + f->chroma_v_shift) {
case 0x00:
f->avctx->pix_fmt = AV_PIX_FMT_YUV444P;
break;
case 0x01:
f->avctx->pix_fmt = AV_PIX_FMT_YUV440P;
break;
case 0x10:
f->avctx->pix_fmt = AV_PIX_FMT_YUV422P;
break;
@ -428,6 +594,53 @@ static int read_header(FFV1Context *f)
av_log(f->avctx, AV_LOG_ERROR, "format not supported\n");
return AVERROR(ENOSYS);
}
} else if (f->avctx->bits_per_raw_sample <= 8 && f->transparency) {
switch (16 * f->chroma_h_shift + f->chroma_v_shift) {
case 0x00:
f->avctx->pix_fmt = AV_PIX_FMT_YUVA444P;
break;
case 0x10:
f->avctx->pix_fmt = AV_PIX_FMT_YUVA422P;
break;
case 0x11:
f->avctx->pix_fmt = AV_PIX_FMT_YUVA420P;
break;
default:
av_log(f->avctx, AV_LOG_ERROR, "format not supported\n");
return AVERROR(ENOSYS);
}
} else if (f->avctx->bits_per_raw_sample == 9) {
f->packed_at_lsb = 1;
switch (16 * f->chroma_h_shift + f->chroma_v_shift) {
case 0x00:
f->avctx->pix_fmt = AV_PIX_FMT_YUV444P9;
break;
case 0x10:
f->avctx->pix_fmt = AV_PIX_FMT_YUV422P9;
break;
case 0x11:
f->avctx->pix_fmt = AV_PIX_FMT_YUV420P9;
break;
default:
av_log(f->avctx, AV_LOG_ERROR, "format not supported\n");
return AVERROR(ENOSYS);
}
} else if (f->avctx->bits_per_raw_sample == 10) {
f->packed_at_lsb = 1;
switch (16 * f->chroma_h_shift + f->chroma_v_shift) {
case 0x00:
f->avctx->pix_fmt = AV_PIX_FMT_YUV444P10;
break;
case 0x10:
f->avctx->pix_fmt = AV_PIX_FMT_YUV422P10;
break;
case 0x11:
f->avctx->pix_fmt = AV_PIX_FMT_YUV420P10;
break;
default:
av_log(f->avctx, AV_LOG_ERROR, "format not supported\n");
return AVERROR(ENOSYS);
}
} else {
switch (16 * f->chroma_h_shift + f->chroma_v_shift) {
case 0x00:
@ -450,7 +663,22 @@ static int read_header(FFV1Context *f)
"chroma subsampling not supported in this colorspace\n");
return AVERROR(ENOSYS);
}
f->avctx->pix_fmt = AV_PIX_FMT_RGB32;
switch (f->avctx->bits_per_raw_sample) {
case 8:
f->avctx->pix_fmt = AV_PIX_FMT_RGB32;
break;
case 9:
f->avctx->pix_fmt = AV_PIX_FMT_GBRP9;
break;
case 10:
f->avctx->pix_fmt = AV_PIX_FMT_GBRP10;
break;
default:
av_log(f->avctx, AV_LOG_ERROR,
"bit depth %d not supported\n",
f->avctx->bits_per_raw_sample);
return AVERROR(ENOSYS);
}
} else {
av_log(f->avctx, AV_LOG_ERROR, "colorspace not supported\n");
return AVERROR(ENOSYS);
@ -458,45 +686,64 @@ static int read_header(FFV1Context *f)
av_dlog(f->avctx, "%d %d %d\n",
f->chroma_h_shift, f->chroma_v_shift, f->avctx->pix_fmt);
if (f->version < 2) {
context_count = read_quant_tables(c, f->quant_table);
if (context_count < 0) {
av_log(f->avctx, AV_LOG_ERROR, "read_quant_table error\n");
return context_count;
}
} else {
f->slice_count = get_symbol(c, state, 0);
if (f->slice_count > (unsigned)MAX_SLICES)
return AVERROR_INVALIDDATA;
}
} else if (f->version < 3) {
f->slice_count = get_symbol(c, state, 0);
} else {
const uint8_t *p = c->bytestream_end;
for (f->slice_count = 0;
f->slice_count < MAX_SLICES && 3 < p - c->bytestream_start;
f->slice_count++) {
int trailer = 3 + 5 * !!f->ec;
int size = AV_RB24(p - trailer);
if (size + trailer > p - c->bytestream_start)
break;
p -= size + trailer;
}
}
if (f->slice_count > (unsigned)MAX_SLICES || f->slice_count <= 0) {
av_log(f->avctx, AV_LOG_ERROR, "slice count %d is invalid\n",
f->slice_count);
return AVERROR_INVALIDDATA;
}
for (j = 0; j < f->slice_count; j++) {
FFV1Context *fs = f->slice_context[j];
fs->ac = f->ac;
fs->ac = f->ac;
fs->packed_at_lsb = f->packed_at_lsb;
if (f->version >= 2) {
fs->slice_x = get_symbol(c, state, 0) * f->width;
fs->slice_y = get_symbol(c, state, 0) * f->height;
fs->slice_width = (get_symbol(c, state, 0) + 1) * f->width + fs->slice_x;
fs->slice_height = (get_symbol(c, state, 0) + 1) * f->height + fs->slice_y;
fs->slice_damaged = 0;
fs->slice_x /= f->num_h_slices;
fs->slice_y /= f->num_v_slices;
fs->slice_width = fs->slice_width / f->num_h_slices - fs->slice_x;
fs->slice_height = fs->slice_height / f->num_v_slices - fs->slice_y;
if ((unsigned)fs->slice_width > f->width ||
if (f->version == 2) {
fs->slice_x = get_symbol(c, state, 0) * f->width;
fs->slice_y = get_symbol(c, state, 0) * f->height;
fs->slice_width =
(get_symbol(c, state, 0) + 1) * f->width + fs->slice_x;
fs->slice_height =
(get_symbol(c, state, 0) + 1) * f->height + fs->slice_y;
fs->slice_x /= f->num_h_slices;
fs->slice_y /= f->num_v_slices;
fs->slice_width /= f->num_h_slices - fs->slice_x;
fs->slice_height /= f->num_v_slices - fs->slice_y;
if ((unsigned)fs->slice_width > f->width ||
(unsigned)fs->slice_height > f->height)
return AVERROR_INVALIDDATA;
if ((unsigned)fs->slice_x + (uint64_t)fs->slice_width > f->width ||
(unsigned)fs->slice_y + (uint64_t)fs->slice_height > f->height)
if ((unsigned)fs->slice_x + (uint64_t)fs->slice_width > f->width
|| (unsigned)fs->slice_y + (uint64_t)fs->slice_height >
f->height)
return AVERROR_INVALIDDATA;
}
for (i = 0; i < f->plane_count; i++) {
PlaneContext *const p = &fs->plane[i];
if (f->version >= 2) {
if (f->version == 2) {
int idx = get_symbol(c, state, 0);
if (idx > (unsigned)f->quant_table_count) {
av_log(f->avctx, AV_LOG_ERROR,
@ -511,14 +758,16 @@ static int read_header(FFV1Context *f)
memcpy(p->quant_table, f->quant_table, sizeof(p->quant_table));
}
if (p->context_count < context_count) {
av_freep(&p->state);
av_freep(&p->vlc_state);
if (f->version <= 2) {
av_assert0(context_count >= 0);
if (p->context_count < context_count) {
av_freep(&p->state);
av_freep(&p->vlc_state);
}
p->context_count = context_count;
}
p->context_count = context_count;
}
}
return 0;
}
@ -546,7 +795,7 @@ static int ffv1_decode_frame(AVCodecContext *avctx, void *data,
FFV1Context *f = avctx->priv_data;
RangeCoder *const c = &f->slice_context[0]->c;
AVFrame *const p = &f->picture;
int bytes_read, i, ret;
int i, ret;
uint8_t keystate = 128;
const uint8_t *buf_p;
@ -559,67 +808,97 @@ static int ffv1_decode_frame(AVCodecContext *avctx, void *data,
ff_init_range_decoder(c, buf, buf_size);
ff_build_rac_states(c, 0.05 * (1LL << 32), 256 - 8);
p->pict_type = AV_PICTURE_TYPE_I; // FIXME: I vs. P
p->pict_type = AV_PICTURE_TYPE_I; //FIXME I vs. P
if (get_rac(c, &keystate)) {
p->key_frame = 1;
p->key_frame = 1;
f->key_frame_ok = 0;
if ((ret = read_header(f)) < 0)
return ret;
if ((ret = ffv1_init_slice_state(f)) < 0)
return ret;
ffv1_clear_state(f);
f->key_frame_ok = 1;
} else {
if (!f->key_frame_ok) {
av_log(avctx, AV_LOG_ERROR,
"Cant decode non keyframe without valid keyframe\n");
return AVERROR_INVALIDDATA;
}
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];
}
}
p->reference = 0;
p->reference = 3; //for error concealment
if ((ret = avctx->get_buffer(avctx, p)) < 0) {
av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
return ret;
}
if (avctx->debug & FF_DEBUG_PICT_INFO)
av_log(avctx, AV_LOG_ERROR, "keyframe:%d coder:%d\n", p->key_frame, f->ac);
if (!f->ac) {
bytes_read = c->bytestream - c->bytestream_start - 1;
if (bytes_read == 0)
av_log(avctx, AV_LOG_ERROR, "error at end of AC stream\n"); // FIXME
init_get_bits(&f->slice_context[0]->gb, buf + bytes_read,
(buf_size - bytes_read) * 8);
} else {
bytes_read = 0; /* avoid warning */
}
av_log(avctx, AV_LOG_DEBUG,
"ver:%d keyframe:%d coder:%d ec:%d slices:%d bps:%d\n",
f->version, p->key_frame, f->ac, f->ec, f->slice_count,
f->avctx->bits_per_raw_sample);
buf_p = buf + buf_size;
for (i = f->slice_count - 1; i > 0; i--) {
for (i = f->slice_count - 1; i >= 0; i--) {
FFV1Context *fs = f->slice_context[i];
int v = AV_RB24(buf_p - 3) + 3;
if (buf_p - buf <= v) {
int trailer = 3 + 5 * !!f->ec;
int v;
if (i || f->version > 2)
v = AV_RB24(buf_p - trailer) + trailer;
else
v = buf_p - c->bytestream_start;
if (buf_p - c->bytestream_start < v) {
av_log(avctx, AV_LOG_ERROR, "Slice pointer chain broken\n");
return AVERROR_INVALIDDATA;
}
buf_p -= v;
if (fs->ac)
if (f->ec) {
unsigned crc = av_crc(av_crc_get_table(AV_CRC_32_IEEE), 0, buf_p, v);
if (crc) {
av_log(f->avctx, AV_LOG_ERROR, "CRC mismatch %X!\n", crc);
fs->slice_damaged = 1;
}
}
if (i) {
ff_init_range_decoder(&fs->c, buf_p, v);
else
init_get_bits(&fs->gb, buf_p, v * 8);
} else
fs->c.bytestream_end = (uint8_t *)(buf_p + v);
}
avctx->execute(avctx, decode_slice, &f->slice_context[0], NULL,
f->slice_count,
sizeof(void *));
for (i = f->slice_count - 1; i >= 0; i--) {
FFV1Context *fs = f->slice_context[i];
int j;
if (fs->slice_damaged && f->last_picture.data[0]) {
const uint8_t *src[4];
uint8_t *dst[4];
for (j = 0; j < 4; j++) {
int sh = (j == 1 || j == 2) ? f->chroma_h_shift : 0;
int sv = (j == 1 || j == 2) ? f->chroma_v_shift : 0;
dst[j] = f->picture.data[j] + f->picture.linesize[j] *
(fs->slice_y >> sv) + (fs->slice_x >> sh);
src[j] = f->last_picture.data[j] +
f->last_picture.linesize[j] *
(fs->slice_y >> sv) + (fs->slice_x >> sh);
}
av_image_copy(dst, f->picture.linesize, (const uint8_t **)src,
f->last_picture.linesize,
avctx->pix_fmt, fs->slice_width,
fs->slice_height);
}
}
avctx->execute(avctx, decode_slice, &f->slice_context[0],
NULL, f->slice_count, sizeof(void *));
f->picture_number++;
*picture = *p;
*data_size = sizeof(AVFrame);
FFSWAP(AVFrame, f->picture, f->last_picture);
return buf_size;
}

431
libavcodec/ffv1enc.c
View File

@ -1,7 +1,7 @@
/*
* FFV1 encoder for libavcodec
*
* Copyright (c) 2012 Michael Niedermayer <michaelni@gmx.at>
* Copyright (c) 2003-2012 Michael Niedermayer <michaelni@gmx.at>
*
* This file is part of Libav.
*
@ -26,7 +26,12 @@
*/
#include "libavutil/avassert.h"
#include "libavutil/pixdesc.h"
#include "libavutil/crc.h"
#include "libavutil/opt.h"
#include "libavutil/imgutils.h"
#include "avcodec.h"
#include "internal.h"
#include "get_bits.h"
#include "put_bits.h"
#include "dsputil.h"
@ -57,7 +62,7 @@ static void find_best_state(uint8_t best_state[256][256],
occ[j] = 1.0;
for (k = 0; k < 256; k++) {
double newocc[256] = { 0 };
for (m = 0; m < 256; m++)
for (m = 1; m < 256; m++)
if (occ[m]) {
len -= occ[m] * (p * l2tab[m] +
(1 - p) * l2tab[256 - m]);
@ -144,7 +149,7 @@ static inline void put_vlc_symbol(PutBitContext *pb, VlcState *const state,
i += i;
}
assert(k <= 8);
assert(k <= 13);
#if 0 // JPEG LS
if (k == 0 && 2 * state->drift <= -state->count)
@ -269,60 +274,86 @@ static void encode_plane(FFV1Context *s, uint8_t *src, int w, int h,
sample[0][-1] = sample[1][0];
sample[1][w] = sample[1][w - 1];
// { START_TIMER
if (s->avctx->bits_per_raw_sample <= 8) {
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 {
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);
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, uint32_t *src, int w, int h,
int stride)
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[3][3];
int16_t *sample[MAX_PLANES][3];
int lbd = s->avctx->bits_per_raw_sample <= 8;
int bits = s->avctx->bits_per_raw_sample > 0
? s->avctx->bits_per_raw_sample
: 8;
int offset = 1 << bits;
s->run_index = 0;
memset(s->sample_buffer, 0, ring_size * 3 * (w + 6) * sizeof(*s->sample_buffer));
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 < 3; p++)
sample[p][i] = s->sample_buffer + p * ring_size * (w + 6) +
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 v = src[x + stride * y];
int b = v & 0xFF;
int g = (v >> 8) & 0xFF;
int r = (v >> 16) & 0xFF;
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 += 0x100;
r += 0x100;
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; p++) {
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];
encode_line(s, w, sample[p], FFMIN(p, 1), 9);
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;
@ -364,14 +395,14 @@ static void write_header(FFV1Context *f)
}
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->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, 0); // no transparency plane
put_rac(c, state, f->transparency);
write_quant_tables(c, f->quant_table);
} else {
} 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];
@ -393,32 +424,41 @@ static void write_header(FFV1Context *f)
}
}
static int write_extra_header(FFV1Context *f)
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 = av_malloc(f->avctx->extradata_size = 10000 +
(11 * 11 * 5 * 5 * 5 + 11 * 11 * 11) * 32);
f->avctx->extradata_size = 10000 + 4 +
(11 * 11 * 5 * 5 * 5 + 11 * 11 * 11) * 32;
f->avctx->extradata = av_malloc(f->avctx->extradata_size);
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->minor_version = 2;
put_symbol(c, state, f->minor_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->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, 0); // no transparency plane
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);
@ -443,8 +483,17 @@ static int write_extra_header(FFV1Context *f)
}
}
if (f->version > 2) {
put_symbol(c, state, f->ec, 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;
}
@ -496,24 +545,147 @@ static int sort_stt(FFV1Context *s, uint8_t stt[256])
return print;
}
static int init_slices_state(FFV1Context *f)
{
int i, ret;
for (i = 0; i < f->slice_count; i++) {
FFV1Context *fs = f->slice_context[i];
if ((ret = ffv1_init_slice_state(f, fs)) < 0)
return AVERROR(ENOMEM);
}
return 0;
}
static av_cold int ffv1_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;
ffv1_common_init(avctx);
s->version = 0;
s->ac = avctx->coder_type ? 2 : 0;
if ((avctx->flags & (CODEC_FLAG_PASS1 | CODEC_FLAG_PASS2)) ||
avctx->slices > 1)
s->version = FFMAX(s->version, 2);
if (avctx->level == 3) {
s->version = 3;
}
if (s->ec < 0) {
s->ec = (s->version >= 3);
}
if (s->version >= 2 &&
avctx->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) {
av_log(avctx, AV_LOG_ERROR,
"Version %d requested, please set -strict experimental in "
"order to enable it\n",
s->version);
return AVERROR(ENOSYS);
}
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_INVALIDDATA;
}
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;
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_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;
s->version = FFMAX(s->version, 1);
break;
default:
av_log(avctx, AV_LOG_ERROR, "format not supported\n");
return AVERROR_INVALIDDATA;
}
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] = 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) {
if (s->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;
@ -546,38 +718,13 @@ static av_cold int ffv1_encode_init(AVCodecContext *avctx)
p->context_count = s->context_count[p->quant_table_index];
}
if (ffv1_allocate_initial_states(s) < 0)
return AVERROR(ENOMEM);
if ((ret = ffv1_allocate_initial_states(s)) < 0)
return ret;
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 AVERROR_INVALIDDATA;
}
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_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 AVERROR(ENOSYS);
}
if (!s->transparency)
s->plane_count = 2;
avcodec_get_chroma_sub_sample(avctx->pix_fmt, &s->chroma_h_shift,
&s->chroma_v_shift);
@ -625,7 +772,7 @@ static av_cold int ffv1_encode_init(AVCodecContext *avctx)
}
}
gob_count = strtol(p, &next, 0);
if (next == p || gob_count < 0) {
if (next == p || gob_count <= 0) {
av_log(avctx, AV_LOG_ERROR, "2Pass file invalid\n");
return AVERROR_INVALIDDATA;
}
@ -656,14 +803,24 @@ static av_cold int ffv1_encode_init(AVCodecContext *avctx)
}
if (s->version > 1) {
s->num_h_slices = 2;
s->num_v_slices = 2;
write_extra_header(s);
for (s->num_v_slices = 2; 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:
write_extradata(s);
}
if ((ret = ffv1_init_slice_contexts(s)) < 0)
return ret;
if ((ret = ffv1_init_slice_state(s)) < 0)
if ((ret = init_slices_state(s)) < 0)
return ret;
#define STATS_OUT_SIZE 1024 * 1024 * 6
@ -683,6 +840,32 @@ static av_cold int ffv1_encode_init(AVCodecContext *avctx)
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.interlaced_frame)
put_symbol(c, state, 3, 0);
else
put_symbol(c, state, 1 + !f->picture.top_field_first, 0);
put_symbol(c, state, f->picture.sample_aspect_ratio.num, 0);
put_symbol(c, state, f->picture.sample_aspect_ratio.den, 0);
}
static int encode_slice(AVCodecContext *c, void *arg)
{
FFV1Context *fs = *(void **)arg;
@ -692,6 +875,22 @@ static int encode_slice(AVCodecContext *c, void *arg)
int x = fs->slice_x;
int y = fs->slice_y;
AVFrame *const p = &f->picture;
const int ps = (av_pix_fmt_desc_get(c->pix_fmt)->flags & PIX_FMT_PLANAR)
? (f->bits_per_raw_sample > 8) + 1
: 4;
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 = -((-width) >> f->chroma_h_shift);
@ -699,17 +898,23 @@ static int encode_slice(AVCodecContext *c, void *arg)
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],
encode_plane(fs, p->data[0] + ps * 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);
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 {
encode_rgb_frame(fs, (uint32_t *)(p->data[0]) +
x + y * (p->linesize[0] / 4),
width, height, p->linesize[0] / 4);
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();
@ -717,7 +922,7 @@ static int encode_slice(AVCodecContext *c, void *arg)
}
static int ffv1_encode_frame(AVCodecContext *avctx, AVPacket *pkt,
const AVFrame *pict, int *got_packet)
const AVFrame *pict, int *got_packet)
{
FFV1Context *f = avctx->priv_data;
RangeCoder *const c = &f->slice_context[0]->c;
@ -727,9 +932,9 @@ static int ffv1_encode_frame(AVCodecContext *avctx, AVPacket *pkt,
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) {
if ((ret = ff_alloc_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;
}
@ -745,17 +950,12 @@ static int ffv1_encode_frame(AVCodecContext *avctx, AVPacket *pkt,
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) {
if (f->ac > 1) {
int i;
for (i = 1; i < 256; i++) {
c->one_state[i] = f->state_transition[i];
@ -765,13 +965,10 @@ static int ffv1_encode_frame(AVCodecContext *avctx, AVPacket *pkt,
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);
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 *));
@ -782,21 +979,27 @@ static int ffv1_encode_frame(AVCodecContext *avctx, AVPacket *pkt,
int bytes;
if (fs->ac) {
uint8_t state = 128;
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 = used_count + (put_bits_count(&fs->pb) + 7) / 8;
used_count = 0;
bytes = fs->ac_byte_count + (put_bits_count(&fs->pb) + 7) / 8;
}
if (i > 0) {
if (i > 0 || f->version > 2) {
av_assert0(bytes < pkt->size / f->slice_count);
memmove(buf_p, fs->ac ? fs->c.bytestream_start : fs->pb.buf, bytes);
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;
}
@ -851,6 +1054,26 @@ static int ffv1_encode_frame(AVCodecContext *avctx, AVPacket *pkt,
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 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,
@ -863,9 +1086,17 @@ AVCodec ff_ffv1_encoder = {
.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_YUV444P9, AV_PIX_FMT_YUV422P9, AV_PIX_FMT_YUV420P9,
AV_PIX_FMT_YUV420P10, AV_PIX_FMT_YUV422P10, AV_PIX_FMT_YUV444P10,
AV_PIX_FMT_YUV420P16, AV_PIX_FMT_YUV422P16, AV_PIX_FMT_YUV444P16,
AV_PIX_FMT_RGB32,
AV_PIX_FMT_GBRP9, AV_PIX_FMT_GBRP10,
AV_PIX_FMT_YUVA420P, AV_PIX_FMT_YUVA422P, AV_PIX_FMT_YUVA444P,
AV_PIX_FMT_GRAY16, AV_PIX_FMT_GRAY8,
AV_PIX_FMT_NONE
},
.long_name = NULL_IF_CONFIG_SMALL("FFmpeg video codec #1"),
.defaults = ffv1_defaults,
.priv_class = &class,
};