mirror of
https://github.com/FFmpeg/FFmpeg.git
synced 2024-12-23 12:43:46 +02:00
4243da4ff4
This is possible, because every given FFCodec has to implement exactly one of these. Doing so decreases sizeof(FFCodec) and therefore decreases the size of the binary. Notice that in case of position-independent code the decrease is in .data.rel.ro, so that this translates to decreased memory consumption. Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
438 lines
12 KiB
C
438 lines
12 KiB
C
/*
|
|
* CRI image decoder
|
|
*
|
|
* Copyright (c) 2020 Paul B Mahol
|
|
*
|
|
* 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
|
|
* Cintel RAW image decoder
|
|
*/
|
|
|
|
#define BITSTREAM_READER_LE
|
|
|
|
#include "libavutil/intfloat.h"
|
|
#include "libavutil/display.h"
|
|
#include "avcodec.h"
|
|
#include "bytestream.h"
|
|
#include "codec_internal.h"
|
|
#include "get_bits.h"
|
|
#include "internal.h"
|
|
#include "thread.h"
|
|
|
|
typedef struct CRIContext {
|
|
AVCodecContext *jpeg_avctx; // wrapper context for MJPEG
|
|
AVPacket *jpkt; // encoded JPEG tile
|
|
AVFrame *jpgframe; // decoded JPEG tile
|
|
|
|
GetByteContext gb;
|
|
int color_model;
|
|
const uint8_t *data;
|
|
unsigned data_size;
|
|
uint64_t tile_size[4];
|
|
} CRIContext;
|
|
|
|
static av_cold int cri_decode_init(AVCodecContext *avctx)
|
|
{
|
|
CRIContext *s = avctx->priv_data;
|
|
const AVCodec *codec;
|
|
int ret;
|
|
|
|
s->jpgframe = av_frame_alloc();
|
|
if (!s->jpgframe)
|
|
return AVERROR(ENOMEM);
|
|
|
|
s->jpkt = av_packet_alloc();
|
|
if (!s->jpkt)
|
|
return AVERROR(ENOMEM);
|
|
|
|
codec = avcodec_find_decoder(AV_CODEC_ID_MJPEG);
|
|
if (!codec)
|
|
return AVERROR_BUG;
|
|
s->jpeg_avctx = avcodec_alloc_context3(codec);
|
|
if (!s->jpeg_avctx)
|
|
return AVERROR(ENOMEM);
|
|
s->jpeg_avctx->flags = avctx->flags;
|
|
s->jpeg_avctx->flags2 = avctx->flags2;
|
|
s->jpeg_avctx->dct_algo = avctx->dct_algo;
|
|
s->jpeg_avctx->idct_algo = avctx->idct_algo;
|
|
ret = avcodec_open2(s->jpeg_avctx, codec, NULL);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void unpack_10bit(GetByteContext *gb, uint16_t *dst, int shift,
|
|
int w, int h, ptrdiff_t stride)
|
|
{
|
|
int count = w * h;
|
|
int pos = 0;
|
|
|
|
while (count > 0) {
|
|
uint32_t a0, a1, a2, a3;
|
|
if (bytestream2_get_bytes_left(gb) < 4)
|
|
break;
|
|
a0 = bytestream2_get_le32(gb);
|
|
a1 = bytestream2_get_le32(gb);
|
|
a2 = bytestream2_get_le32(gb);
|
|
a3 = bytestream2_get_le32(gb);
|
|
dst[pos] = (((a0 >> 1) & 0xE00) | (a0 & 0x1FF)) << shift;
|
|
pos++;
|
|
if (pos >= w) {
|
|
if (count == 1)
|
|
break;
|
|
dst += stride;
|
|
pos = 0;
|
|
}
|
|
dst[pos] = (((a0 >> 13) & 0x3F) | ((a0 >> 14) & 0xFC0)) << shift;
|
|
pos++;
|
|
if (pos >= w) {
|
|
if (count == 2)
|
|
break;
|
|
dst += stride;
|
|
pos = 0;
|
|
}
|
|
dst[pos] = (((a0 >> 26) & 7) | ((a1 & 0x1FF) << 3)) << shift;
|
|
pos++;
|
|
if (pos >= w) {
|
|
if (count == 3)
|
|
break;
|
|
dst += stride;
|
|
pos = 0;
|
|
}
|
|
dst[pos] = (((a1 >> 10) & 0x1FF) | ((a1 >> 11) & 0xE00)) << shift;
|
|
pos++;
|
|
if (pos >= w) {
|
|
if (count == 4)
|
|
break;
|
|
dst += stride;
|
|
pos = 0;
|
|
}
|
|
dst[pos] = (((a1 >> 23) & 0x3F) | ((a2 & 0x3F) << 6)) << shift;
|
|
pos++;
|
|
if (pos >= w) {
|
|
if (count == 5)
|
|
break;
|
|
dst += stride;
|
|
pos = 0;
|
|
}
|
|
dst[pos] = (((a2 >> 7) & 0xFF8) | ((a2 >> 6) & 7)) << shift;
|
|
pos++;
|
|
if (pos >= w) {
|
|
if (count == 6)
|
|
break;
|
|
dst += stride;
|
|
pos = 0;
|
|
}
|
|
dst[pos] = (((a3 & 7) << 9) | ((a2 >> 20) & 0x1FF)) << shift;
|
|
pos++;
|
|
if (pos >= w) {
|
|
if (count == 7)
|
|
break;
|
|
dst += stride;
|
|
pos = 0;
|
|
}
|
|
dst[pos] = (((a3 >> 4) & 0xFC0) | ((a3 >> 3) & 0x3F)) << shift;
|
|
pos++;
|
|
if (pos >= w) {
|
|
if (count == 8)
|
|
break;
|
|
dst += stride;
|
|
pos = 0;
|
|
}
|
|
dst[pos] = (((a3 >> 16) & 7) | ((a3 >> 17) & 0xFF8)) << shift;
|
|
pos++;
|
|
if (pos >= w) {
|
|
if (count == 9)
|
|
break;
|
|
dst += stride;
|
|
pos = 0;
|
|
}
|
|
|
|
count -= 9;
|
|
}
|
|
}
|
|
|
|
static int cri_decode_frame(AVCodecContext *avctx, AVFrame *p,
|
|
int *got_frame, AVPacket *avpkt)
|
|
{
|
|
CRIContext *s = avctx->priv_data;
|
|
GetByteContext *gb = &s->gb;
|
|
int ret, bps, hflip = 0, vflip = 0;
|
|
AVFrameSideData *rotation;
|
|
int compressed = 0;
|
|
|
|
s->data = NULL;
|
|
s->data_size = 0;
|
|
|
|
bytestream2_init(gb, avpkt->data, avpkt->size);
|
|
|
|
while (bytestream2_get_bytes_left(gb) > 8) {
|
|
char codec_name[1024];
|
|
uint32_t key, length;
|
|
float framerate;
|
|
int width, height;
|
|
|
|
key = bytestream2_get_le32(gb);
|
|
length = bytestream2_get_le32(gb);
|
|
|
|
switch (key) {
|
|
case 1:
|
|
if (length != 4)
|
|
return AVERROR_INVALIDDATA;
|
|
|
|
if (bytestream2_get_le32(gb) != MKTAG('D', 'V', 'C', 'C'))
|
|
return AVERROR_INVALIDDATA;
|
|
break;
|
|
case 100:
|
|
if (length < 16)
|
|
return AVERROR_INVALIDDATA;
|
|
width = bytestream2_get_le32(gb);
|
|
height = bytestream2_get_le32(gb);
|
|
s->color_model = bytestream2_get_le32(gb);
|
|
if (bytestream2_get_le32(gb) != 1)
|
|
return AVERROR_INVALIDDATA;
|
|
ret = ff_set_dimensions(avctx, width, height);
|
|
if (ret < 0)
|
|
return ret;
|
|
length -= 16;
|
|
goto skip;
|
|
case 101:
|
|
if (length != 4)
|
|
return AVERROR_INVALIDDATA;
|
|
|
|
if (bytestream2_get_le32(gb) != 0)
|
|
return AVERROR_INVALIDDATA;
|
|
break;
|
|
case 102:
|
|
bytestream2_get_buffer(gb, codec_name, FFMIN(length, sizeof(codec_name) - 1));
|
|
length -= FFMIN(length, sizeof(codec_name) - 1);
|
|
if (strncmp(codec_name, "cintel_craw", FFMIN(length, sizeof(codec_name) - 1)))
|
|
return AVERROR_INVALIDDATA;
|
|
compressed = 1;
|
|
goto skip;
|
|
case 103:
|
|
if (bytestream2_get_bytes_left(gb) < length)
|
|
return AVERROR_INVALIDDATA;
|
|
s->data = gb->buffer;
|
|
s->data_size = length;
|
|
goto skip;
|
|
case 105:
|
|
hflip = bytestream2_get_byte(gb) != 0;
|
|
length--;
|
|
goto skip;
|
|
case 106:
|
|
vflip = bytestream2_get_byte(gb) != 0;
|
|
length--;
|
|
goto skip;
|
|
case 107:
|
|
if (length != 4)
|
|
return AVERROR_INVALIDDATA;
|
|
framerate = av_int2float(bytestream2_get_le32(gb));
|
|
avctx->framerate.num = framerate * 1000;
|
|
avctx->framerate.den = 1000;
|
|
break;
|
|
case 119:
|
|
if (length != 32)
|
|
return AVERROR_INVALIDDATA;
|
|
|
|
for (int i = 0; i < 4; i++)
|
|
s->tile_size[i] = bytestream2_get_le64(gb);
|
|
break;
|
|
default:
|
|
av_log(avctx, AV_LOG_DEBUG, "skipping unknown key %u of length %u\n", key, length);
|
|
skip:
|
|
bytestream2_skip(gb, length);
|
|
}
|
|
}
|
|
|
|
switch (s->color_model) {
|
|
case 76:
|
|
case 88:
|
|
avctx->pix_fmt = AV_PIX_FMT_BAYER_BGGR16;
|
|
break;
|
|
case 77:
|
|
case 89:
|
|
avctx->pix_fmt = AV_PIX_FMT_BAYER_GBRG16;
|
|
break;
|
|
case 78:
|
|
case 90:
|
|
avctx->pix_fmt = AV_PIX_FMT_BAYER_RGGB16;
|
|
break;
|
|
case 45:
|
|
case 79:
|
|
case 91:
|
|
avctx->pix_fmt = AV_PIX_FMT_BAYER_GRBG16;
|
|
break;
|
|
}
|
|
|
|
switch (s->color_model) {
|
|
case 45:
|
|
bps = 10;
|
|
break;
|
|
case 76:
|
|
case 77:
|
|
case 78:
|
|
case 79:
|
|
bps = 12;
|
|
break;
|
|
case 88:
|
|
case 89:
|
|
case 90:
|
|
case 91:
|
|
bps = 16;
|
|
break;
|
|
default:
|
|
return AVERROR_INVALIDDATA;
|
|
}
|
|
|
|
if (compressed) {
|
|
for (int i = 0; i < 4; i++) {
|
|
if (s->tile_size[i] >= s->data_size)
|
|
return AVERROR_INVALIDDATA;
|
|
}
|
|
|
|
if (s->tile_size[0] + s->tile_size[1] + s->tile_size[2] + s->tile_size[3] !=
|
|
s->data_size)
|
|
return AVERROR_INVALIDDATA;
|
|
}
|
|
|
|
if (!s->data || !s->data_size)
|
|
return AVERROR_INVALIDDATA;
|
|
|
|
if ((ret = ff_thread_get_buffer(avctx, p, 0)) < 0)
|
|
return ret;
|
|
|
|
avctx->bits_per_raw_sample = bps;
|
|
|
|
if (!compressed && s->color_model == 45) {
|
|
uint16_t *dst = (uint16_t *)p->data[0];
|
|
GetByteContext gb;
|
|
|
|
bytestream2_init(&gb, s->data, s->data_size);
|
|
unpack_10bit(&gb, dst, 4, avctx->width, avctx->height, p->linesize[0] / 2);
|
|
} else if (!compressed) {
|
|
GetBitContext gbit;
|
|
const int shift = 16 - bps;
|
|
|
|
ret = init_get_bits8(&gbit, s->data, s->data_size);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
for (int y = 0; y < avctx->height; y++) {
|
|
uint16_t *dst = (uint16_t *)(p->data[0] + y * p->linesize[0]);
|
|
|
|
if (get_bits_left(&gbit) < avctx->width * bps)
|
|
break;
|
|
|
|
for (int x = 0; x < avctx->width; x++)
|
|
dst[x] = get_bits(&gbit, bps) << shift;
|
|
}
|
|
} else {
|
|
unsigned offset = 0;
|
|
|
|
for (int tile = 0; tile < 4; tile++) {
|
|
av_packet_unref(s->jpkt);
|
|
s->jpkt->data = (uint8_t *)s->data + offset;
|
|
s->jpkt->size = s->tile_size[tile];
|
|
|
|
ret = avcodec_send_packet(s->jpeg_avctx, s->jpkt);
|
|
if (ret < 0) {
|
|
av_log(avctx, AV_LOG_ERROR, "Error submitting a packet for decoding\n");
|
|
return ret;
|
|
}
|
|
|
|
ret = avcodec_receive_frame(s->jpeg_avctx, s->jpgframe);
|
|
if (ret < 0 || s->jpgframe->format != AV_PIX_FMT_GRAY16 ||
|
|
s->jpeg_avctx->width * 2 != avctx->width ||
|
|
s->jpeg_avctx->height * 2 != avctx->height) {
|
|
if (ret < 0) {
|
|
av_log(avctx, AV_LOG_ERROR,
|
|
"JPEG decoding error (%d).\n", ret);
|
|
} else {
|
|
av_log(avctx, AV_LOG_ERROR,
|
|
"JPEG invalid format.\n");
|
|
ret = AVERROR_INVALIDDATA;
|
|
}
|
|
|
|
/* Normally skip, if error explode */
|
|
if (avctx->err_recognition & AV_EF_EXPLODE)
|
|
return ret;
|
|
else
|
|
return 0;
|
|
}
|
|
|
|
for (int y = 0; y < s->jpeg_avctx->height; y++) {
|
|
const int hw = s->jpgframe->width / 2;
|
|
uint16_t *dst = (uint16_t *)(p->data[0] + (y * 2) * p->linesize[0] + tile * hw * 2);
|
|
const uint16_t *src = (const uint16_t *)(s->jpgframe->data[0] + y * s->jpgframe->linesize[0]);
|
|
|
|
memcpy(dst, src, hw * 2);
|
|
src += hw;
|
|
dst += p->linesize[0] / 2;
|
|
memcpy(dst, src, hw * 2);
|
|
}
|
|
|
|
av_frame_unref(s->jpgframe);
|
|
offset += s->tile_size[tile];
|
|
}
|
|
}
|
|
|
|
if (hflip || vflip) {
|
|
rotation = av_frame_new_side_data(p, AV_FRAME_DATA_DISPLAYMATRIX,
|
|
sizeof(int32_t) * 9);
|
|
if (rotation) {
|
|
av_display_rotation_set((int32_t *)rotation->data, 0.f);
|
|
av_display_matrix_flip((int32_t *)rotation->data, hflip, vflip);
|
|
}
|
|
}
|
|
|
|
p->pict_type = AV_PICTURE_TYPE_I;
|
|
p->key_frame = 1;
|
|
|
|
*got_frame = 1;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static av_cold int cri_decode_close(AVCodecContext *avctx)
|
|
{
|
|
CRIContext *s = avctx->priv_data;
|
|
|
|
av_frame_free(&s->jpgframe);
|
|
av_packet_free(&s->jpkt);
|
|
avcodec_free_context(&s->jpeg_avctx);
|
|
|
|
return 0;
|
|
}
|
|
|
|
const FFCodec ff_cri_decoder = {
|
|
.p.name = "cri",
|
|
.p.type = AVMEDIA_TYPE_VIDEO,
|
|
.p.id = AV_CODEC_ID_CRI,
|
|
.priv_data_size = sizeof(CRIContext),
|
|
.init = cri_decode_init,
|
|
FF_CODEC_DECODE_CB(cri_decode_frame),
|
|
.close = cri_decode_close,
|
|
.p.capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_FRAME_THREADS,
|
|
.caps_internal = FF_CODEC_CAP_INIT_THREADSAFE | FF_CODEC_CAP_INIT_CLEANUP,
|
|
.p.long_name = NULL_IF_CONFIG_SMALL("Cintel RAW"),
|
|
};
|