forked from FFmpeg/FFmpeg
/
mjpegdec.c
2901 lines (2602 loc) · 104 KB
/
mjpegdec.c
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/*
* MJPEG decoder
* Copyright (c) 2000, 2001 Fabrice Bellard
* Copyright (c) 2003 Alex Beregszaszi
* Copyright (c) 2003-2004 Michael Niedermayer
*
* Support for external huffman table, various fixes (AVID workaround),
* aspecting, new decode_frame mechanism and apple mjpeg-b support
* by Alex Beregszaszi
*
* 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
* MJPEG decoder.
*/
#include "libavutil/imgutils.h"
#include "libavutil/avassert.h"
#include "libavutil/opt.h"
#include "avcodec.h"
#include "blockdsp.h"
#include "copy_block.h"
#include "hwaccel.h"
#include "idctdsp.h"
#include "internal.h"
#include "jpegtables.h"
#include "mjpeg.h"
#include "mjpegdec.h"
#include "jpeglsdec.h"
#include "profiles.h"
#include "put_bits.h"
#include "tiff.h"
#include "exif.h"
#include "bytestream.h"
static int build_vlc(VLC *vlc, const uint8_t *bits_table,
const uint8_t *val_table, int nb_codes,
int use_static, int is_ac)
{
uint8_t huff_size[256] = { 0 };
uint16_t huff_code[256];
uint16_t huff_sym[256];
int i;
av_assert0(nb_codes <= 256);
ff_mjpeg_build_huffman_codes(huff_size, huff_code, bits_table, val_table);
for (i = 0; i < 256; i++)
huff_sym[i] = i + 16 * is_ac;
if (is_ac)
huff_sym[0] = 16 * 256;
return ff_init_vlc_sparse(vlc, 9, nb_codes, huff_size, 1, 1,
huff_code, 2, 2, huff_sym, 2, 2, use_static);
}
static int init_default_huffman_tables(MJpegDecodeContext *s)
{
static const struct {
int class;
int index;
const uint8_t *bits;
const uint8_t *values;
int codes;
int length;
} ht[] = {
{ 0, 0, avpriv_mjpeg_bits_dc_luminance,
avpriv_mjpeg_val_dc, 12, 12 },
{ 0, 1, avpriv_mjpeg_bits_dc_chrominance,
avpriv_mjpeg_val_dc, 12, 12 },
{ 1, 0, avpriv_mjpeg_bits_ac_luminance,
avpriv_mjpeg_val_ac_luminance, 251, 162 },
{ 1, 1, avpriv_mjpeg_bits_ac_chrominance,
avpriv_mjpeg_val_ac_chrominance, 251, 162 },
{ 2, 0, avpriv_mjpeg_bits_ac_luminance,
avpriv_mjpeg_val_ac_luminance, 251, 162 },
{ 2, 1, avpriv_mjpeg_bits_ac_chrominance,
avpriv_mjpeg_val_ac_chrominance, 251, 162 },
};
int i, ret;
for (i = 0; i < FF_ARRAY_ELEMS(ht); i++) {
ret = build_vlc(&s->vlcs[ht[i].class][ht[i].index],
ht[i].bits, ht[i].values, ht[i].codes,
0, ht[i].class == 1);
if (ret < 0)
return ret;
if (ht[i].class < 2) {
memcpy(s->raw_huffman_lengths[ht[i].class][ht[i].index],
ht[i].bits + 1, 16);
memcpy(s->raw_huffman_values[ht[i].class][ht[i].index],
ht[i].values, ht[i].length);
}
}
return 0;
}
static void parse_avid(MJpegDecodeContext *s, uint8_t *buf, int len)
{
s->buggy_avid = 1;
if (len > 14 && buf[12] == 1) /* 1 - NTSC */
s->interlace_polarity = 1;
if (len > 14 && buf[12] == 2) /* 2 - PAL */
s->interlace_polarity = 0;
if (s->avctx->debug & FF_DEBUG_PICT_INFO)
av_log(s->avctx, AV_LOG_INFO, "AVID: len:%d %d\n", len, len > 14 ? buf[12] : -1);
}
static void init_idct(AVCodecContext *avctx)
{
MJpegDecodeContext *s = avctx->priv_data;
ff_idctdsp_init(&s->idsp, avctx);
ff_init_scantable(s->idsp.idct_permutation, &s->scantable,
ff_zigzag_direct);
}
av_cold int ff_mjpeg_decode_init(AVCodecContext *avctx)
{
MJpegDecodeContext *s = avctx->priv_data;
int ret;
if (!s->picture_ptr) {
s->picture = av_frame_alloc();
if (!s->picture)
return AVERROR(ENOMEM);
s->picture_ptr = s->picture;
}
s->avctx = avctx;
ff_blockdsp_init(&s->bdsp, avctx);
ff_hpeldsp_init(&s->hdsp, avctx->flags);
init_idct(avctx);
s->buffer_size = 0;
s->buffer = NULL;
s->start_code = -1;
s->first_picture = 1;
s->got_picture = 0;
s->org_height = avctx->coded_height;
avctx->chroma_sample_location = AVCHROMA_LOC_CENTER;
avctx->colorspace = AVCOL_SPC_BT470BG;
s->hwaccel_pix_fmt = s->hwaccel_sw_pix_fmt = AV_PIX_FMT_NONE;
if ((ret = init_default_huffman_tables(s)) < 0)
return ret;
if (s->extern_huff) {
av_log(avctx, AV_LOG_INFO, "using external huffman table\n");
if ((ret = init_get_bits(&s->gb, avctx->extradata, avctx->extradata_size * 8)) < 0)
return ret;
if (ff_mjpeg_decode_dht(s)) {
av_log(avctx, AV_LOG_ERROR,
"error using external huffman table, switching back to internal\n");
init_default_huffman_tables(s);
}
}
if (avctx->field_order == AV_FIELD_BB) { /* quicktime icefloe 019 */
s->interlace_polarity = 1; /* bottom field first */
av_log(avctx, AV_LOG_DEBUG, "bottom field first\n");
} else if (avctx->field_order == AV_FIELD_UNKNOWN) {
if (avctx->codec_tag == AV_RL32("MJPG"))
s->interlace_polarity = 1;
}
if ( avctx->extradata_size > 8
&& AV_RL32(avctx->extradata) == 0x2C
&& AV_RL32(avctx->extradata+4) == 0x18) {
parse_avid(s, avctx->extradata, avctx->extradata_size);
}
if (avctx->codec->id == AV_CODEC_ID_AMV)
s->flipped = 1;
return 0;
}
/* quantize tables */
int ff_mjpeg_decode_dqt(MJpegDecodeContext *s)
{
int len, index, i;
len = get_bits(&s->gb, 16) - 2;
if (8*len > get_bits_left(&s->gb)) {
av_log(s->avctx, AV_LOG_ERROR, "dqt: len %d is too large\n", len);
return AVERROR_INVALIDDATA;
}
while (len >= 65) {
int pr = get_bits(&s->gb, 4);
if (pr > 1) {
av_log(s->avctx, AV_LOG_ERROR, "dqt: invalid precision\n");
return AVERROR_INVALIDDATA;
}
index = get_bits(&s->gb, 4);
if (index >= 4)
return -1;
av_log(s->avctx, AV_LOG_DEBUG, "index=%d\n", index);
/* read quant table */
for (i = 0; i < 64; i++) {
s->quant_matrixes[index][i] = get_bits(&s->gb, pr ? 16 : 8);
if (s->quant_matrixes[index][i] == 0) {
av_log(s->avctx, AV_LOG_ERROR, "dqt: 0 quant value\n");
return AVERROR_INVALIDDATA;
}
}
// XXX FIXME fine-tune, and perhaps add dc too
s->qscale[index] = FFMAX(s->quant_matrixes[index][1],
s->quant_matrixes[index][8]) >> 1;
av_log(s->avctx, AV_LOG_DEBUG, "qscale[%d]: %d\n",
index, s->qscale[index]);
len -= 1 + 64 * (1+pr);
}
return 0;
}
/* decode huffman tables and build VLC decoders */
int ff_mjpeg_decode_dht(MJpegDecodeContext *s)
{
int len, index, i, class, n, v, code_max;
uint8_t bits_table[17];
uint8_t val_table[256];
int ret = 0;
len = get_bits(&s->gb, 16) - 2;
if (8*len > get_bits_left(&s->gb)) {
av_log(s->avctx, AV_LOG_ERROR, "dht: len %d is too large\n", len);
return AVERROR_INVALIDDATA;
}
while (len > 0) {
if (len < 17)
return AVERROR_INVALIDDATA;
class = get_bits(&s->gb, 4);
if (class >= 2)
return AVERROR_INVALIDDATA;
index = get_bits(&s->gb, 4);
if (index >= 4)
return AVERROR_INVALIDDATA;
n = 0;
for (i = 1; i <= 16; i++) {
bits_table[i] = get_bits(&s->gb, 8);
n += bits_table[i];
}
len -= 17;
if (len < n || n > 256)
return AVERROR_INVALIDDATA;
code_max = 0;
for (i = 0; i < n; i++) {
v = get_bits(&s->gb, 8);
if (v > code_max)
code_max = v;
val_table[i] = v;
}
len -= n;
/* build VLC and flush previous vlc if present */
ff_free_vlc(&s->vlcs[class][index]);
av_log(s->avctx, AV_LOG_DEBUG, "class=%d index=%d nb_codes=%d\n",
class, index, code_max + 1);
if ((ret = build_vlc(&s->vlcs[class][index], bits_table, val_table,
code_max + 1, 0, class > 0)) < 0)
return ret;
if (class > 0) {
ff_free_vlc(&s->vlcs[2][index]);
if ((ret = build_vlc(&s->vlcs[2][index], bits_table, val_table,
code_max + 1, 0, 0)) < 0)
return ret;
}
for (i = 0; i < 16; i++)
s->raw_huffman_lengths[class][index][i] = bits_table[i + 1];
for (i = 0; i < 256; i++)
s->raw_huffman_values[class][index][i] = val_table[i];
}
return 0;
}
int ff_mjpeg_decode_sof(MJpegDecodeContext *s)
{
int len, nb_components, i, width, height, bits, ret, size_change;
unsigned pix_fmt_id;
int h_count[MAX_COMPONENTS] = { 0 };
int v_count[MAX_COMPONENTS] = { 0 };
s->cur_scan = 0;
memset(s->upscale_h, 0, sizeof(s->upscale_h));
memset(s->upscale_v, 0, sizeof(s->upscale_v));
len = get_bits(&s->gb, 16);
bits = get_bits(&s->gb, 8);
if (bits > 16 || bits < 1) {
av_log(s->avctx, AV_LOG_ERROR, "bits %d is invalid\n", bits);
return AVERROR_INVALIDDATA;
}
if (s->avctx->bits_per_raw_sample != bits) {
av_log(s->avctx, s->avctx->bits_per_raw_sample > 0 ? AV_LOG_INFO : AV_LOG_DEBUG, "Changing bps from %d to %d\n", s->avctx->bits_per_raw_sample, bits);
s->avctx->bits_per_raw_sample = bits;
init_idct(s->avctx);
}
if (s->pegasus_rct)
bits = 9;
if (bits == 9 && !s->pegasus_rct)
s->rct = 1; // FIXME ugly
if(s->lossless && s->avctx->lowres){
av_log(s->avctx, AV_LOG_ERROR, "lowres is not possible with lossless jpeg\n");
return -1;
}
height = get_bits(&s->gb, 16);
width = get_bits(&s->gb, 16);
// HACK for odd_height.mov
if (s->interlaced && s->width == width && s->height == height + 1)
height= s->height;
av_log(s->avctx, AV_LOG_DEBUG, "sof0: picture: %dx%d\n", width, height);
if (av_image_check_size(width, height, 0, s->avctx) < 0)
return AVERROR_INVALIDDATA;
if (s->buf_size && (width + 7) / 8 * ((height + 7) / 8) > s->buf_size * 4LL)
return AVERROR_INVALIDDATA;
nb_components = get_bits(&s->gb, 8);
if (nb_components <= 0 ||
nb_components > MAX_COMPONENTS)
return -1;
if (s->interlaced && (s->bottom_field == !s->interlace_polarity)) {
if (nb_components != s->nb_components) {
av_log(s->avctx, AV_LOG_ERROR,
"nb_components changing in interlaced picture\n");
return AVERROR_INVALIDDATA;
}
}
if (s->ls && !(bits <= 8 || nb_components == 1)) {
avpriv_report_missing_feature(s->avctx,
"JPEG-LS that is not <= 8 "
"bits/component or 16-bit gray");
return AVERROR_PATCHWELCOME;
}
if (len != 8 + 3 * nb_components) {
av_log(s->avctx, AV_LOG_ERROR, "decode_sof0: error, len(%d) mismatch %d components\n", len, nb_components);
return AVERROR_INVALIDDATA;
}
s->nb_components = nb_components;
s->h_max = 1;
s->v_max = 1;
for (i = 0; i < nb_components; i++) {
/* component id */
s->component_id[i] = get_bits(&s->gb, 8) - 1;
h_count[i] = get_bits(&s->gb, 4);
v_count[i] = get_bits(&s->gb, 4);
/* compute hmax and vmax (only used in interleaved case) */
if (h_count[i] > s->h_max)
s->h_max = h_count[i];
if (v_count[i] > s->v_max)
s->v_max = v_count[i];
s->quant_index[i] = get_bits(&s->gb, 8);
if (s->quant_index[i] >= 4) {
av_log(s->avctx, AV_LOG_ERROR, "quant_index is invalid\n");
return AVERROR_INVALIDDATA;
}
if (!h_count[i] || !v_count[i]) {
av_log(s->avctx, AV_LOG_ERROR,
"Invalid sampling factor in component %d %d:%d\n",
i, h_count[i], v_count[i]);
return AVERROR_INVALIDDATA;
}
av_log(s->avctx, AV_LOG_DEBUG, "component %d %d:%d id: %d quant:%d\n",
i, h_count[i], v_count[i],
s->component_id[i], s->quant_index[i]);
}
if ( nb_components == 4
&& s->component_id[0] == 'C' - 1
&& s->component_id[1] == 'M' - 1
&& s->component_id[2] == 'Y' - 1
&& s->component_id[3] == 'K' - 1)
s->adobe_transform = 0;
if (s->ls && (s->h_max > 1 || s->v_max > 1)) {
avpriv_report_missing_feature(s->avctx, "Subsampling in JPEG-LS");
return AVERROR_PATCHWELCOME;
}
if (s->bayer) {
if (nb_components == 2) {
/* Bayer images embedded in DNGs can contain 2 interleaved components and the
width stored in their SOF3 markers is the width of each one. We only output
a single component, therefore we need to adjust the output image width. We
handle the deinterleaving (but not the debayering) in this file. */
width *= 2;
}
/* They can also contain 1 component, which is double the width and half the height
of the final image (rows are interleaved). We don't handle the decoding in this
file, but leave that to the TIFF/DNG decoder. */
}
/* if different size, realloc/alloc picture */
if (width != s->width || height != s->height || bits != s->bits ||
memcmp(s->h_count, h_count, sizeof(h_count)) ||
memcmp(s->v_count, v_count, sizeof(v_count))) {
size_change = 1;
s->width = width;
s->height = height;
s->bits = bits;
memcpy(s->h_count, h_count, sizeof(h_count));
memcpy(s->v_count, v_count, sizeof(v_count));
s->interlaced = 0;
s->got_picture = 0;
/* test interlaced mode */
if (s->first_picture &&
(s->multiscope != 2 || s->avctx->time_base.den >= 25 * s->avctx->time_base.num) &&
s->org_height != 0 &&
s->height < ((s->org_height * 3) / 4)) {
s->interlaced = 1;
s->bottom_field = s->interlace_polarity;
s->picture_ptr->interlaced_frame = 1;
s->picture_ptr->top_field_first = !s->interlace_polarity;
height *= 2;
}
ret = ff_set_dimensions(s->avctx, width, height);
if (ret < 0)
return ret;
s->first_picture = 0;
} else {
size_change = 0;
}
if (s->got_picture && s->interlaced && (s->bottom_field == !s->interlace_polarity)) {
if (s->progressive) {
avpriv_request_sample(s->avctx, "progressively coded interlaced picture");
return AVERROR_INVALIDDATA;
}
} else {
if (s->v_max == 1 && s->h_max == 1 && s->lossless==1 && (nb_components==3 || nb_components==4))
s->rgb = 1;
else if (!s->lossless)
s->rgb = 0;
/* XXX: not complete test ! */
pix_fmt_id = ((unsigned)s->h_count[0] << 28) | (s->v_count[0] << 24) |
(s->h_count[1] << 20) | (s->v_count[1] << 16) |
(s->h_count[2] << 12) | (s->v_count[2] << 8) |
(s->h_count[3] << 4) | s->v_count[3];
av_log(s->avctx, AV_LOG_DEBUG, "pix fmt id %x\n", pix_fmt_id);
/* NOTE we do not allocate pictures large enough for the possible
* padding of h/v_count being 4 */
if (!(pix_fmt_id & 0xD0D0D0D0))
pix_fmt_id -= (pix_fmt_id & 0xF0F0F0F0) >> 1;
if (!(pix_fmt_id & 0x0D0D0D0D))
pix_fmt_id -= (pix_fmt_id & 0x0F0F0F0F) >> 1;
for (i = 0; i < 8; i++) {
int j = 6 + (i&1) - (i&6);
int is = (pix_fmt_id >> (4*i)) & 0xF;
int js = (pix_fmt_id >> (4*j)) & 0xF;
if (is == 1 && js != 2 && (i < 2 || i > 5))
js = (pix_fmt_id >> ( 8 + 4*(i&1))) & 0xF;
if (is == 1 && js != 2 && (i < 2 || i > 5))
js = (pix_fmt_id >> (16 + 4*(i&1))) & 0xF;
if (is == 1 && js == 2) {
if (i & 1) s->upscale_h[j/2] = 1;
else s->upscale_v[j/2] = 1;
}
}
switch (pix_fmt_id) {
case 0x11110000: /* for bayer-encoded huffman lossless JPEGs embedded in DNGs */
s->avctx->pix_fmt = AV_PIX_FMT_GRAY16LE;
break;
case 0x11111100:
if (s->rgb)
s->avctx->pix_fmt = s->bits <= 9 ? AV_PIX_FMT_BGR24 : AV_PIX_FMT_BGR48;
else {
if ( s->adobe_transform == 0
|| s->component_id[0] == 'R' - 1 && s->component_id[1] == 'G' - 1 && s->component_id[2] == 'B' - 1) {
s->avctx->pix_fmt = s->bits <= 8 ? AV_PIX_FMT_GBRP : AV_PIX_FMT_GBRP16;
} else {
if (s->bits <= 8) s->avctx->pix_fmt = s->cs_itu601 ? AV_PIX_FMT_YUV444P : AV_PIX_FMT_YUVJ444P;
else s->avctx->pix_fmt = AV_PIX_FMT_YUV444P16;
s->avctx->color_range = s->cs_itu601 ? AVCOL_RANGE_MPEG : AVCOL_RANGE_JPEG;
}
}
av_assert0(s->nb_components == 3);
break;
case 0x11111111:
if (s->rgb)
s->avctx->pix_fmt = s->bits <= 9 ? AV_PIX_FMT_ABGR : AV_PIX_FMT_RGBA64;
else {
if (s->adobe_transform == 0 && s->bits <= 8) {
s->avctx->pix_fmt = AV_PIX_FMT_GBRAP;
} else {
s->avctx->pix_fmt = s->bits <= 8 ? AV_PIX_FMT_YUVA444P : AV_PIX_FMT_YUVA444P16;
s->avctx->color_range = s->cs_itu601 ? AVCOL_RANGE_MPEG : AVCOL_RANGE_JPEG;
}
}
av_assert0(s->nb_components == 4);
break;
case 0x22111122:
case 0x22111111:
if (s->adobe_transform == 0 && s->bits <= 8) {
s->avctx->pix_fmt = AV_PIX_FMT_GBRAP;
s->upscale_v[1] = s->upscale_v[2] = 1;
s->upscale_h[1] = s->upscale_h[2] = 1;
} else if (s->adobe_transform == 2 && s->bits <= 8) {
s->avctx->pix_fmt = AV_PIX_FMT_YUVA444P;
s->upscale_v[1] = s->upscale_v[2] = 1;
s->upscale_h[1] = s->upscale_h[2] = 1;
s->avctx->color_range = s->cs_itu601 ? AVCOL_RANGE_MPEG : AVCOL_RANGE_JPEG;
} else {
if (s->bits <= 8) s->avctx->pix_fmt = AV_PIX_FMT_YUVA420P;
else s->avctx->pix_fmt = AV_PIX_FMT_YUVA420P16;
s->avctx->color_range = s->cs_itu601 ? AVCOL_RANGE_MPEG : AVCOL_RANGE_JPEG;
}
av_assert0(s->nb_components == 4);
break;
case 0x12121100:
case 0x22122100:
case 0x21211100:
case 0x22211200:
if (s->bits <= 8) s->avctx->pix_fmt = s->cs_itu601 ? AV_PIX_FMT_YUV444P : AV_PIX_FMT_YUVJ444P;
else
goto unk_pixfmt;
s->avctx->color_range = s->cs_itu601 ? AVCOL_RANGE_MPEG : AVCOL_RANGE_JPEG;
break;
case 0x22221100:
case 0x22112200:
case 0x11222200:
if (s->bits <= 8) s->avctx->pix_fmt = s->cs_itu601 ? AV_PIX_FMT_YUV444P : AV_PIX_FMT_YUVJ444P;
else
goto unk_pixfmt;
s->avctx->color_range = s->cs_itu601 ? AVCOL_RANGE_MPEG : AVCOL_RANGE_JPEG;
break;
case 0x11000000:
case 0x13000000:
case 0x14000000:
case 0x31000000:
case 0x33000000:
case 0x34000000:
case 0x41000000:
case 0x43000000:
case 0x44000000:
if(s->bits <= 8)
s->avctx->pix_fmt = AV_PIX_FMT_GRAY8;
else
s->avctx->pix_fmt = AV_PIX_FMT_GRAY16;
break;
case 0x12111100:
case 0x14121200:
case 0x14111100:
case 0x22211100:
case 0x22112100:
if (s->component_id[0] == 'Q' && s->component_id[1] == 'F' && s->component_id[2] == 'A') {
if (s->bits <= 8) s->avctx->pix_fmt = AV_PIX_FMT_GBRP;
else
goto unk_pixfmt;
s->upscale_v[0] = s->upscale_v[1] = 1;
} else {
if (pix_fmt_id == 0x14111100)
s->upscale_v[1] = s->upscale_v[2] = 1;
if (s->bits <= 8) s->avctx->pix_fmt = s->cs_itu601 ? AV_PIX_FMT_YUV440P : AV_PIX_FMT_YUVJ440P;
else
goto unk_pixfmt;
s->avctx->color_range = s->cs_itu601 ? AVCOL_RANGE_MPEG : AVCOL_RANGE_JPEG;
}
break;
case 0x21111100:
if (s->component_id[0] == 'Q' && s->component_id[1] == 'F' && s->component_id[2] == 'A') {
if (s->bits <= 8) s->avctx->pix_fmt = AV_PIX_FMT_GBRP;
else
goto unk_pixfmt;
s->upscale_h[0] = s->upscale_h[1] = 1;
} else {
if (s->bits <= 8) s->avctx->pix_fmt = s->cs_itu601 ? AV_PIX_FMT_YUV422P : AV_PIX_FMT_YUVJ422P;
else s->avctx->pix_fmt = AV_PIX_FMT_YUV422P16;
s->avctx->color_range = s->cs_itu601 ? AVCOL_RANGE_MPEG : AVCOL_RANGE_JPEG;
}
break;
case 0x31111100:
if (s->bits > 8)
goto unk_pixfmt;
s->avctx->pix_fmt = s->cs_itu601 ? AV_PIX_FMT_YUV444P : AV_PIX_FMT_YUVJ444P;
s->avctx->color_range = s->cs_itu601 ? AVCOL_RANGE_MPEG : AVCOL_RANGE_JPEG;
s->upscale_h[1] = s->upscale_h[2] = 2;
break;
case 0x22121100:
case 0x22111200:
if (s->bits <= 8) s->avctx->pix_fmt = s->cs_itu601 ? AV_PIX_FMT_YUV422P : AV_PIX_FMT_YUVJ422P;
else
goto unk_pixfmt;
s->avctx->color_range = s->cs_itu601 ? AVCOL_RANGE_MPEG : AVCOL_RANGE_JPEG;
break;
case 0x22111100:
case 0x23111100:
case 0x42111100:
case 0x24111100:
if (s->bits <= 8) s->avctx->pix_fmt = s->cs_itu601 ? AV_PIX_FMT_YUV420P : AV_PIX_FMT_YUVJ420P;
else s->avctx->pix_fmt = AV_PIX_FMT_YUV420P16;
s->avctx->color_range = s->cs_itu601 ? AVCOL_RANGE_MPEG : AVCOL_RANGE_JPEG;
if (pix_fmt_id == 0x42111100) {
if (s->bits > 8)
goto unk_pixfmt;
s->upscale_h[1] = s->upscale_h[2] = 1;
} else if (pix_fmt_id == 0x24111100) {
if (s->bits > 8)
goto unk_pixfmt;
s->upscale_v[1] = s->upscale_v[2] = 1;
} else if (pix_fmt_id == 0x23111100) {
if (s->bits > 8)
goto unk_pixfmt;
s->upscale_v[1] = s->upscale_v[2] = 2;
}
break;
case 0x41111100:
if (s->bits <= 8) s->avctx->pix_fmt = s->cs_itu601 ? AV_PIX_FMT_YUV411P : AV_PIX_FMT_YUVJ411P;
else
goto unk_pixfmt;
s->avctx->color_range = s->cs_itu601 ? AVCOL_RANGE_MPEG : AVCOL_RANGE_JPEG;
break;
default:
unk_pixfmt:
avpriv_report_missing_feature(s->avctx, "Pixel format 0x%x bits:%d", pix_fmt_id, s->bits);
memset(s->upscale_h, 0, sizeof(s->upscale_h));
memset(s->upscale_v, 0, sizeof(s->upscale_v));
return AVERROR_PATCHWELCOME;
}
if ((AV_RB32(s->upscale_h) || AV_RB32(s->upscale_v)) && s->avctx->lowres) {
avpriv_report_missing_feature(s->avctx, "Lowres for weird subsampling");
return AVERROR_PATCHWELCOME;
}
if ((AV_RB32(s->upscale_h) || AV_RB32(s->upscale_v)) && s->progressive && s->avctx->pix_fmt == AV_PIX_FMT_GBRP) {
avpriv_report_missing_feature(s->avctx, "progressive for weird subsampling");
return AVERROR_PATCHWELCOME;
}
if (s->ls) {
memset(s->upscale_h, 0, sizeof(s->upscale_h));
memset(s->upscale_v, 0, sizeof(s->upscale_v));
if (s->nb_components == 3) {
s->avctx->pix_fmt = AV_PIX_FMT_RGB24;
} else if (s->nb_components != 1) {
av_log(s->avctx, AV_LOG_ERROR, "Unsupported number of components %d\n", s->nb_components);
return AVERROR_PATCHWELCOME;
} else if (s->palette_index && s->bits <= 8)
s->avctx->pix_fmt = AV_PIX_FMT_PAL8;
else if (s->bits <= 8)
s->avctx->pix_fmt = AV_PIX_FMT_GRAY8;
else
s->avctx->pix_fmt = AV_PIX_FMT_GRAY16;
}
s->pix_desc = av_pix_fmt_desc_get(s->avctx->pix_fmt);
if (!s->pix_desc) {
av_log(s->avctx, AV_LOG_ERROR, "Could not get a pixel format descriptor.\n");
return AVERROR_BUG;
}
if (s->avctx->pix_fmt == s->hwaccel_sw_pix_fmt && !size_change) {
s->avctx->pix_fmt = s->hwaccel_pix_fmt;
} else {
enum AVPixelFormat pix_fmts[] = {
#if CONFIG_MJPEG_NVDEC_HWACCEL
AV_PIX_FMT_CUDA,
#endif
#if CONFIG_MJPEG_VAAPI_HWACCEL
AV_PIX_FMT_VAAPI,
#endif
s->avctx->pix_fmt,
AV_PIX_FMT_NONE,
};
s->hwaccel_pix_fmt = ff_get_format(s->avctx, pix_fmts);
if (s->hwaccel_pix_fmt < 0)
return AVERROR(EINVAL);
s->hwaccel_sw_pix_fmt = s->avctx->pix_fmt;
s->avctx->pix_fmt = s->hwaccel_pix_fmt;
}
if (s->avctx->skip_frame == AVDISCARD_ALL) {
s->picture_ptr->pict_type = AV_PICTURE_TYPE_I;
s->picture_ptr->key_frame = 1;
s->got_picture = 1;
return 0;
}
av_frame_unref(s->picture_ptr);
if (ff_get_buffer(s->avctx, s->picture_ptr, AV_GET_BUFFER_FLAG_REF) < 0)
return -1;
s->picture_ptr->pict_type = AV_PICTURE_TYPE_I;
s->picture_ptr->key_frame = 1;
s->got_picture = 1;
for (i = 0; i < 4; i++)
s->linesize[i] = s->picture_ptr->linesize[i] << s->interlaced;
ff_dlog(s->avctx, "%d %d %d %d %d %d\n",
s->width, s->height, s->linesize[0], s->linesize[1],
s->interlaced, s->avctx->height);
}
if ((s->rgb && !s->lossless && !s->ls) ||
(!s->rgb && s->ls && s->nb_components > 1) ||
(s->avctx->pix_fmt == AV_PIX_FMT_PAL8 && !s->ls)
) {
av_log(s->avctx, AV_LOG_ERROR, "Unsupported coding and pixel format combination\n");
return AVERROR_PATCHWELCOME;
}
/* totally blank picture as progressive JPEG will only add details to it */
if (s->progressive) {
int bw = (width + s->h_max * 8 - 1) / (s->h_max * 8);
int bh = (height + s->v_max * 8 - 1) / (s->v_max * 8);
for (i = 0; i < s->nb_components; i++) {
int size = bw * bh * s->h_count[i] * s->v_count[i];
av_freep(&s->blocks[i]);
av_freep(&s->last_nnz[i]);
s->blocks[i] = av_mallocz_array(size, sizeof(**s->blocks));
s->last_nnz[i] = av_mallocz_array(size, sizeof(**s->last_nnz));
if (!s->blocks[i] || !s->last_nnz[i])
return AVERROR(ENOMEM);
s->block_stride[i] = bw * s->h_count[i];
}
memset(s->coefs_finished, 0, sizeof(s->coefs_finished));
}
if (s->avctx->hwaccel) {
s->hwaccel_picture_private =
av_mallocz(s->avctx->hwaccel->frame_priv_data_size);
if (!s->hwaccel_picture_private)
return AVERROR(ENOMEM);
ret = s->avctx->hwaccel->start_frame(s->avctx, s->raw_image_buffer,
s->raw_image_buffer_size);
if (ret < 0)
return ret;
}
return 0;
}
static inline int mjpeg_decode_dc(MJpegDecodeContext *s, int dc_index)
{
int code;
code = get_vlc2(&s->gb, s->vlcs[0][dc_index].table, 9, 2);
if (code < 0 || code > 16) {
av_log(s->avctx, AV_LOG_WARNING,
"mjpeg_decode_dc: bad vlc: %d:%d (%p)\n",
0, dc_index, &s->vlcs[0][dc_index]);
return 0xfffff;
}
if (code)
return get_xbits(&s->gb, code);
else
return 0;
}
/* decode block and dequantize */
static int decode_block(MJpegDecodeContext *s, int16_t *block, int component,
int dc_index, int ac_index, uint16_t *quant_matrix)
{
int code, i, j, level, val;
/* DC coef */
val = mjpeg_decode_dc(s, dc_index);
if (val == 0xfffff) {
av_log(s->avctx, AV_LOG_ERROR, "error dc\n");
return AVERROR_INVALIDDATA;
}
val = val * (unsigned)quant_matrix[0] + s->last_dc[component];
val = av_clip_int16(val);
s->last_dc[component] = val;
block[0] = val;
/* AC coefs */
i = 0;
{OPEN_READER(re, &s->gb);
do {
UPDATE_CACHE(re, &s->gb);
GET_VLC(code, re, &s->gb, s->vlcs[1][ac_index].table, 9, 2);
i += ((unsigned)code) >> 4;
code &= 0xf;
if (code) {
if (code > MIN_CACHE_BITS - 16)
UPDATE_CACHE(re, &s->gb);
{
int cache = GET_CACHE(re, &s->gb);
int sign = (~cache) >> 31;
level = (NEG_USR32(sign ^ cache,code) ^ sign) - sign;
}
LAST_SKIP_BITS(re, &s->gb, code);
if (i > 63) {
av_log(s->avctx, AV_LOG_ERROR, "error count: %d\n", i);
return AVERROR_INVALIDDATA;
}
j = s->scantable.permutated[i];
block[j] = level * quant_matrix[i];
}
} while (i < 63);
CLOSE_READER(re, &s->gb);}
return 0;
}
static int decode_dc_progressive(MJpegDecodeContext *s, int16_t *block,
int component, int dc_index,
uint16_t *quant_matrix, int Al)
{
unsigned val;
s->bdsp.clear_block(block);
val = mjpeg_decode_dc(s, dc_index);
if (val == 0xfffff) {
av_log(s->avctx, AV_LOG_ERROR, "error dc\n");
return AVERROR_INVALIDDATA;
}
val = (val * (quant_matrix[0] << Al)) + s->last_dc[component];
s->last_dc[component] = val;
block[0] = val;
return 0;
}
/* decode block and dequantize - progressive JPEG version */
static int decode_block_progressive(MJpegDecodeContext *s, int16_t *block,
uint8_t *last_nnz, int ac_index,
uint16_t *quant_matrix,
int ss, int se, int Al, int *EOBRUN)
{
int code, i, j, val, run;
unsigned level;
if (*EOBRUN) {
(*EOBRUN)--;
return 0;
}
{
OPEN_READER(re, &s->gb);
for (i = ss; ; i++) {
UPDATE_CACHE(re, &s->gb);
GET_VLC(code, re, &s->gb, s->vlcs[2][ac_index].table, 9, 2);
run = ((unsigned) code) >> 4;
code &= 0xF;
if (code) {
i += run;
if (code > MIN_CACHE_BITS - 16)
UPDATE_CACHE(re, &s->gb);
{
int cache = GET_CACHE(re, &s->gb);
int sign = (~cache) >> 31;
level = (NEG_USR32(sign ^ cache,code) ^ sign) - sign;
}
LAST_SKIP_BITS(re, &s->gb, code);
if (i >= se) {
if (i == se) {
j = s->scantable.permutated[se];
block[j] = level * (quant_matrix[se] << Al);
break;
}
av_log(s->avctx, AV_LOG_ERROR, "error count: %d\n", i);
return AVERROR_INVALIDDATA;
}
j = s->scantable.permutated[i];
block[j] = level * (quant_matrix[i] << Al);
} else {
if (run == 0xF) {// ZRL - skip 15 coefficients
i += 15;
if (i >= se) {
av_log(s->avctx, AV_LOG_ERROR, "ZRL overflow: %d\n", i);
return AVERROR_INVALIDDATA;
}
} else {
val = (1 << run);
if (run) {
UPDATE_CACHE(re, &s->gb);
val += NEG_USR32(GET_CACHE(re, &s->gb), run);
LAST_SKIP_BITS(re, &s->gb, run);
}
*EOBRUN = val - 1;
break;
}
}
}
CLOSE_READER(re, &s->gb);
}
if (i > *last_nnz)
*last_nnz = i;
return 0;
}
#define REFINE_BIT(j) { \
UPDATE_CACHE(re, &s->gb); \
sign = block[j] >> 15; \
block[j] += SHOW_UBITS(re, &s->gb, 1) * \
((quant_matrix[i] ^ sign) - sign) << Al; \
LAST_SKIP_BITS(re, &s->gb, 1); \
}
#define ZERO_RUN \
for (; ; i++) { \
if (i > last) { \
i += run; \
if (i > se) { \
av_log(s->avctx, AV_LOG_ERROR, "error count: %d\n", i); \
return -1; \
} \
break; \
} \
j = s->scantable.permutated[i]; \
if (block[j]) \
REFINE_BIT(j) \
else if (run-- == 0) \
break; \
}
/* decode block and dequantize - progressive JPEG refinement pass */
static int decode_block_refinement(MJpegDecodeContext *s, int16_t *block,
uint8_t *last_nnz,
int ac_index, uint16_t *quant_matrix,
int ss, int se, int Al, int *EOBRUN)
{
int code, i = ss, j, sign, val, run;
int last = FFMIN(se, *last_nnz);
OPEN_READER(re, &s->gb);
if (*EOBRUN) {
(*EOBRUN)--;
} else {
for (; ; i++) {
UPDATE_CACHE(re, &s->gb);
GET_VLC(code, re, &s->gb, s->vlcs[2][ac_index].table, 9, 2);
if (code & 0xF) {
run = ((unsigned) code) >> 4;
UPDATE_CACHE(re, &s->gb);
val = SHOW_UBITS(re, &s->gb, 1);
LAST_SKIP_BITS(re, &s->gb, 1);
ZERO_RUN;
j = s->scantable.permutated[i];
val--;
block[j] = ((quant_matrix[i] << Al) ^ val) - val;
if (i == se) {
if (i > *last_nnz)
*last_nnz = i;
CLOSE_READER(re, &s->gb);
return 0;
}
} else {
run = ((unsigned) code) >> 4;
if (run == 0xF) {
ZERO_RUN;
} else {
val = run;
run = (1 << run);
if (val) {
UPDATE_CACHE(re, &s->gb);
run += SHOW_UBITS(re, &s->gb, val);