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FFmpeg/libavcodec/argo.c

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avcodec: add Argonaut Games Video decoder
4 years ago
/*
* Argonaut Games Video 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
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "libavutil/imgutils.h"
#include "libavutil/internal.h"
#include "libavutil/intreadwrite.h"
#include "avcodec.h"
#include "bytestream.h"
#include "internal.h"
typedef struct ArgoContext {
GetByteContext gb;
int bpp;
int key;
int mv0[128][2];
int mv1[16][2];
uint32_t pal[256];
AVFrame *frame;
} ArgoContext;
static int decode_pal8(AVCodecContext *avctx, uint32_t *pal)
{
ArgoContext *s = avctx->priv_data;
GetByteContext *gb = &s->gb;
int start, count;
start = bytestream2_get_le16(gb);
count = bytestream2_get_le16(gb);
if (start + count > 256)
return AVERROR_INVALIDDATA;
if (bytestream2_get_bytes_left(gb) < 3 * count)
return AVERROR_INVALIDDATA;
for (int i = 0; i < count; i++)
pal[start + i] = (0xFF << 24U) | bytestream2_get_be24u(gb);
return 0;
}
static int decode_avcf(AVCodecContext *avctx, AVFrame *frame)
{
ArgoContext *s = avctx->priv_data;
GetByteContext *gb = &s->gb;
const int l = frame->linesize[0];
const uint8_t *map = gb->buffer;
uint8_t *dst = frame->data[0];
if (bytestream2_get_bytes_left(gb) < 1024 + (frame->width / 2) * (frame->height / 2))
return AVERROR_INVALIDDATA;
bytestream2_skipu(gb, 1024);
for (int y = 0; y < frame->height; y += 2) {
for (int x = 0; x < frame->width; x += 2) {
int index = bytestream2_get_byteu(gb);
const uint8_t *block = map + index * 4;
dst[x+0] = block[0];
dst[x+1] = block[1];
dst[x+l] = block[2];
dst[x+l+1] = block[3];
}
dst += frame->linesize[0] * 2;
}
return 0;
}
static int decode_alcd(AVCodecContext *avctx, AVFrame *frame)
{
ArgoContext *s = avctx->priv_data;
GetByteContext *gb = &s->gb;
GetByteContext sb;
const int l = frame->linesize[0];
const uint8_t *map = gb->buffer;
uint8_t *dst = frame->data[0];
uint8_t codes = 0;
int count = 0;
if (bytestream2_get_bytes_left(gb) < 1024 + (((frame->width / 2) * (frame->height / 2) + 7) >> 3))
return AVERROR_INVALIDDATA;
bytestream2_skipu(gb, 1024);
sb = *gb;
bytestream2_skipu(gb, ((frame->width / 2) * (frame->height / 2) + 7) >> 3);
for (int y = 0; y < frame->height; y += 2) {
for (int x = 0; x < frame->width; x += 2) {
const uint8_t *block;
int index;
if (count == 0) {
codes = bytestream2_get_byteu(&sb);
count = 8;
}
if (codes & 0x80) {
index = bytestream2_get_byte(gb);
block = map + index * 4;
dst[x+0] = block[0];
dst[x+1] = block[1];
dst[x+l] = block[2];
dst[x+l+1] = block[3];
}
codes <<= 1;
count--;
}
dst += frame->linesize[0] * 2;
}
return 0;
}
static int decode_mad1(AVCodecContext *avctx, AVFrame *frame)
{
ArgoContext *s = avctx->priv_data;
GetByteContext *gb = &s->gb;
const int w = frame->width;
const int h = frame->height;
const int l = frame->linesize[0];
while (bytestream2_get_bytes_left(gb) > 0) {
int size, type, pos, dy;
uint8_t *dst;
type = bytestream2_get_byte(gb);
if (type == 0xFF)
break;
switch (type) {
case 8:
dst = frame->data[0];
for (int y = 0; y < h; y += 8) {
for (int x = 0; x < w; x += 8) {
int fill = bytestream2_get_byte(gb);
uint8_t *ddst = dst + x;
for (int by = 0; by < 8; by++) {
memset(ddst, fill, 8);
ddst += l;
}
}
dst += 8 * l;
}
break;
case 7:
while (bytestream2_get_bytes_left(gb) > 0) {
int bsize = bytestream2_get_byte(gb);
uint8_t *src;
int count;
if (!bsize)
break;
count = bytestream2_get_be16(gb);
while (count > 0) {
int mvx, mvy, a, b, c, mx, my;
int bsize_w, bsize_h;
bsize_w = bsize_h = bsize;
if (bytestream2_get_bytes_left(gb) < 4)
return AVERROR_INVALIDDATA;
mvx = bytestream2_get_byte(gb) * bsize;
mvy = bytestream2_get_byte(gb) * bsize;
a = bytestream2_get_byte(gb);
b = bytestream2_get_byte(gb);
c = ((a & 0x3F) << 8) + b;
mx = mvx + (c & 0x7F) - 64;
my = mvy + (c >> 7) - 64;
if (mvy < 0 || mvy >= h)
return AVERROR_INVALIDDATA;
if (mvx < 0 || mvx >= w)
return AVERROR_INVALIDDATA;
if (my < 0 || my >= h)
return AVERROR_INVALIDDATA;
if (mx < 0 || mx >= w)
return AVERROR_INVALIDDATA;
dst = frame->data[0] + mvx + l * mvy;
src = frame->data[0] + mx + l * my;
bsize_w = FFMIN3(bsize_w, w - mvx, w - mx);
bsize_h = FFMIN3(bsize_h, h - mvy, h - my);
if (mvy >= my && (mvy != my || mvx >= mx)) {
src += (bsize_h - 1) * l;
dst += (bsize_h - 1) * l;
for (int by = 0; by < bsize_h; by++) {
memmove(dst, src, bsize_w);
src -= l;
dst -= l;
}
} else {
for (int by = 0; by < bsize_h; by++) {
memmove(dst, src, bsize_w);
src += l;
dst += l;
}
}
count--;
}
}
break;
case 6:
dst = frame->data[0];
if (bytestream2_get_bytes_left(gb) < w * h)
return AVERROR_INVALIDDATA;
for (int y = 0; y < h; y++) {
bytestream2_get_bufferu(gb, dst, w);
dst += l;
}
break;
case 5:
dst = frame->data[0];
for (int y = 0; y < h; y += 2) {
for (int x = 0; x < w; x += 2) {
int fill = bytestream2_get_byte(gb);
uint8_t *ddst = dst + x;
fill = (fill << 8) | fill;
for (int by = 0; by < 2; by++) {
AV_WN16(ddst, fill);
ddst += l;
}
}
dst += 2 * l;
}
break;
case 3:
size = bytestream2_get_le16(gb);
if (size > 0) {
int x = bytestream2_get_byte(gb) * 4;
int y = bytestream2_get_byte(gb) * 4;
int count = bytestream2_get_byte(gb);
int fill = bytestream2_get_byte(gb);
av_log(avctx, AV_LOG_DEBUG, "%d %d %d %d\n", x, y, count, fill);
for (int i = 0; i < count; i++)
;
return AVERROR_PATCHWELCOME;
}
break;
case 2:
dst = frame->data[0];
pos = 0;
dy = 0;
while (bytestream2_get_bytes_left(gb) > 0) {
int count = bytestream2_get_byteu(gb);
int skip = count & 0x3F;
count = count >> 6;
if (skip == 0x3F) {
pos += 0x3E;
while (pos >= w) {
pos -= w;
dst += l;
dy++;
if (dy >= h)
return 0;
}
} else {
pos += skip;
while (pos >= w) {
pos -= w;
dst += l;
dy++;
if (dy >= h)
return 0;
}
while (count >= 0) {
int bits = bytestream2_get_byte(gb);
for (int i = 0; i < 4; i++) {
switch (bits & 3) {
case 0:
break;
case 1:
if (dy < 1 && !pos)
return AVERROR_INVALIDDATA;
else
dst[pos] = pos ? dst[pos - 1] : dst[-l + w - 1];
break;
case 2:
if (dy < 1)
return AVERROR_INVALIDDATA;
dst[pos] = dst[pos - l];
break;
case 3:
dst[pos] = bytestream2_get_byte(gb);
break;
}
pos++;
if (pos >= w) {
pos -= w;
dst += l;
dy++;
if (dy >= h)
return 0;
}
bits >>= 2;
}
count--;
}
}
}
break;
default:
return AVERROR_INVALIDDATA;
}
}
return 0;
}
static int decode_mad1_24(AVCodecContext *avctx, AVFrame *frame)
{
ArgoContext *s = avctx->priv_data;
GetByteContext *gb = &s->gb;
const int w = frame->width;
const int h = frame->height;
const int l = frame->linesize[0] / 4;
while (bytestream2_get_bytes_left(gb) > 0) {
int osize, type, pos, dy, di, bcode, value, v14;
const uint8_t *bits;
uint32_t *dst;
type = bytestream2_get_byte(gb);
if (type == 0xFF)
return 0;
switch (type) {
case 8:
dst = (uint32_t *)frame->data[0];
for (int y = 0; y + 12 <= h; y += 12) {
for (int x = 0; x + 12 <= w; x += 12) {
int fill = bytestream2_get_be24(gb);
uint32_t *dstp = dst + x;
for (int by = 0; by < 12; by++) {
for (int bx = 0; bx < 12; bx++)
dstp[bx] = fill;
dstp += l;
}
}
dst += 12 * l;
}
break;
case 7:
while (bytestream2_get_bytes_left(gb) > 0) {
int bsize = bytestream2_get_byte(gb);
uint32_t *src;
int count;
if (!bsize)
break;
count = bytestream2_get_be16(gb);
while (count > 0) {
int mvx, mvy, a, b, c, mx, my;
int bsize_w, bsize_h;
bsize_w = bsize_h = bsize;
if (bytestream2_get_bytes_left(gb) < 4)
return AVERROR_INVALIDDATA;
mvx = bytestream2_get_byte(gb) * bsize;
mvy = bytestream2_get_byte(gb) * bsize;
a = bytestream2_get_byte(gb);
b = bytestream2_get_byte(gb);
c = ((a & 0x3F) << 8) + b;
mx = mvx + (c & 0x7F) - 64;
my = mvy + (c >> 7) - 64;
if (mvy < 0 || mvy >= h)
return AVERROR_INVALIDDATA;
if (mvx < 0 || mvx >= w)
return AVERROR_INVALIDDATA;
if (my < 0 || my >= h)
return AVERROR_INVALIDDATA;
if (mx < 0 || mx >= w)
return AVERROR_INVALIDDATA;
dst = (uint32_t *)frame->data[0] + mvx + l * mvy;
src = (uint32_t *)frame->data[0] + mx + l * my;
bsize_w = FFMIN3(bsize_w, w - mvx, w - mx);
bsize_h = FFMIN3(bsize_h, h - mvy, h - my);
if (mvy >= my && (mvy != my || mvx >= mx)) {
src += (bsize_h - 1) * l;
dst += (bsize_h - 1) * l;
for (int by = 0; by < bsize_h; by++) {
memmove(dst, src, bsize_w * 4);
src -= l;
dst -= l;
}
} else {
for (int by = 0; by < bsize_h; by++) {
memmove(dst, src, bsize_w * 4);
src += l;
dst += l;
}
}
count--;
}
}
break;
case 12:
osize = ((h + 3) / 4) * ((w + 3) / 4) + 7;
bits = gb->buffer;
di = 0;
bcode = v14 = 0;
if (bytestream2_get_bytes_left(gb) < osize >> 3)
return AVERROR_INVALIDDATA;
bytestream2_skip(gb, osize >> 3);
for (int x = 0; x < w; x += 4) {
for (int y = 0; y < h; y += 4) {
int astate = 0;
if (bits[di >> 3] & (1 << (di & 7))) {
int codes = bytestream2_get_byte(gb);
for (int count = 0; count < 4; count++) {
uint32_t *src = (uint32_t *)frame->data[0];
size_t src_size = l * (h - 1) + (w - 1);
int nv, v, code = codes & 3;
pos = x;
dy = y + count;
dst = (uint32_t *)frame->data[0] + pos + dy * l;
if (code & 1)
bcode = bytestream2_get_byte(gb);
if (code == 3) {
for (int j = 0; j < 4; j++) {
switch (bcode & 3) {
case 0:
break;
case 1:
if (dy < 1 && !pos)
return AVERROR_INVALIDDATA;
dst[0] = dst[-1];
break;
case 2:
if (dy < 1)
return AVERROR_INVALIDDATA;
dst[0] = dst[-l];
break;
case 3:
if (astate) {
nv = value >> 4;
} else {
value = bytestream2_get_byte(gb);
nv = value & 0xF;
}
astate ^= 1;
dst[0] = src[av_clip(l * (dy + s->mv1[nv][1]) + pos +
s->mv1[nv][0], 0, src_size)];
break;
}
bcode >>= 2;
dst++;
pos++;
}
} else if (code) {
if (code == 1)
v14 = bcode;
else
bcode = v14;
for (int j = 0; j < 4; j++) {
switch (bcode & 3) {
case 0:
break;
case 1:
if (dy < 1 && !pos)
return AVERROR_INVALIDDATA;
dst[0] = dst[-1];
break;
case 2:
if (dy < 1)
return AVERROR_INVALIDDATA;
dst[0] = dst[-l];
break;
case 3:
v = bytestream2_get_byte(gb);
if (v < 128) {
dst[0] = src[av_clip(l * (dy + s->mv0[v][1]) + pos +
s->mv0[v][0], 0, src_size)];
} else {
dst[0] = ((v & 0x7F) << 17) | bytestream2_get_be16(gb);
}
break;
}
bcode >>= 2;
dst++;
pos++;
}
}
codes >>= 2;
}
}
di++;
}
}
break;
default:
return AVERROR_INVALIDDATA;
}
}
return AVERROR_INVALIDDATA;
}
static int decode_rle(AVCodecContext *avctx, AVFrame *frame)
{
ArgoContext *s = avctx->priv_data;
GetByteContext *gb = &s->gb;
const int w = frame->width;
const int h = frame->height;
avcodec/argo: fix linesize for RLE? in PAL8 mode
4 years ago
const int l = frame->linesize[0];
avcodec: add Argonaut Games Video decoder
4 years ago
uint8_t *dst = frame->data[0];
int pos = 0, y = 0;
while (bytestream2_get_bytes_left(gb) > 0) {
int count = bytestream2_get_byte(gb);
int pixel = bytestream2_get_byte(gb);
if (!count) {
pos += pixel;
while (pos >= w) {
pos -= w;
y++;
if (y >= h)
return 0;
}
} else {
while (count > 0) {
dst[pos + y * l] = pixel;
count--;
pos++;
if (pos >= w) {
pos = 0;
y++;
if (y >= h)
return 0;
}
}
}
}
return 0;
}
static int decode_frame(AVCodecContext *avctx, void *data,
int *got_frame, AVPacket *avpkt)
{
ArgoContext *s = avctx->priv_data;
GetByteContext *gb = &s->gb;
AVFrame *frame = s->frame;
uint32_t chunk;
int ret;
bytestream2_init(gb, avpkt->data, avpkt->size);
if ((ret = ff_reget_buffer(avctx, frame, 0)) < 0)
return ret;
chunk = bytestream2_get_be32(gb);
switch (chunk) {
case MKBETAG('P', 'A', 'L', '8'):
for (int y = 0; y < frame->height; y++)
memset(frame->data[0] + y * frame->linesize[0], 0, frame->width * s->bpp);
if (avctx->pix_fmt == AV_PIX_FMT_PAL8)
memset(frame->data[1], 0, AVPALETTE_SIZE);
return decode_pal8(avctx, s->pal);
case MKBETAG('M', 'A', 'D', '1'):
if (avctx->pix_fmt == AV_PIX_FMT_PAL8)
ret = decode_mad1(avctx, frame);
else
ret = decode_mad1_24(avctx, frame);
break;
case MKBETAG('A', 'V', 'C', 'F'):
if (avctx->pix_fmt == AV_PIX_FMT_PAL8) {
s->key = 1;
ret = decode_avcf(avctx, frame);
break;
}
case MKBETAG('A', 'L', 'C', 'D'):
if (avctx->pix_fmt == AV_PIX_FMT_PAL8) {
s->key = 0;
ret = decode_alcd(avctx, frame);
break;
}
case MKBETAG('R', 'L', 'E', 'F'):
if (avctx->pix_fmt == AV_PIX_FMT_PAL8) {
s->key = 1;
ret = decode_rle(avctx, frame);
break;
}
case MKBETAG('R', 'L', 'E', 'D'):
if (avctx->pix_fmt == AV_PIX_FMT_PAL8) {
s->key = 0;
ret = decode_rle(avctx, frame);
break;
}
default:
av_log(avctx, AV_LOG_DEBUG, "unknown chunk 0x%X\n", chunk);
break;
}
if (ret < 0)
return ret;
if (avctx->pix_fmt == AV_PIX_FMT_PAL8)
memcpy(frame->data[1], s->pal, AVPALETTE_SIZE);
if ((ret = av_frame_ref(data, s->frame)) < 0)
return ret;
frame->pict_type = s->key ? AV_PICTURE_TYPE_I : AV_PICTURE_TYPE_P;
frame->key_frame = s->key;
*got_frame = 1;
return avpkt->size;
}
static av_cold int decode_init(AVCodecContext *avctx)
{
ArgoContext *s = avctx->priv_data;
avcodec/argo: use bits_per_coded_sample instead of bits_per_raw_sample Signed-off-by: Zane van Iperen <zane@zanevaniperen.com>
3 years ago
switch (avctx->bits_per_coded_sample) {
avcodec: add Argonaut Games Video decoder
4 years ago
case 8: s->bpp = 1;
avctx->pix_fmt = AV_PIX_FMT_PAL8; break;
case 24: s->bpp = 4;
avctx->pix_fmt = AV_PIX_FMT_BGR0; break;
avcodec/argo: use bits_per_coded_sample instead of bits_per_raw_sample Signed-off-by: Zane van Iperen <zane@zanevaniperen.com>
3 years ago
default: avpriv_request_sample(s, "depth == %u", avctx->bits_per_coded_sample);
avcodec: add Argonaut Games Video decoder
4 years ago
return AVERROR_PATCHWELCOME;
}
s->frame = av_frame_alloc();
if (!s->frame)
return AVERROR(ENOMEM);
for (int n = 0, i = -4; i < 4; i++) {
for (int j = -14; j < 2; j++) {
s->mv0[n][0] = j;
s->mv0[n++][1] = i;
}
}
for (int n = 0, i = -5; i <= 1; i += 2) {
int j = -5;
while (j <= 1) {
s->mv1[n][0] = j;
s->mv1[n++][1] = i;
j += 2;
}
}
return 0;
}
static void decode_flush(AVCodecContext *avctx)
{
ArgoContext *s = avctx->priv_data;
av_frame_unref(s->frame);
}
static av_cold int decode_close(AVCodecContext *avctx)
{
ArgoContext *s = avctx->priv_data;
av_frame_free(&s->frame);
return 0;
}
avcodec: Constify AVCodecs Given that the AVCodec.next pointer has now been removed, most of the AVCodecs are not modified at all any more and can therefore be made const (as this patch does); the only exceptions are the very few codecs for external libraries that have a init_static_data callback. Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com> Signed-off-by: James Almer <jamrial@gmail.com>
4 years ago
const AVCodec ff_argo_decoder = {
avcodec: add Argonaut Games Video decoder
4 years ago
.name = "argo",
.long_name = NULL_IF_CONFIG_SMALL("Argonaut Games Video"),
.type = AVMEDIA_TYPE_VIDEO,
.id = AV_CODEC_ID_ARGO,
.priv_data_size = sizeof(ArgoContext),
.init = decode_init,
.decode = decode_frame,
.flush = decode_flush,
.close = decode_close,
.capabilities = AV_CODEC_CAP_DR1,
avcodec/argo: Mark decoder as init-threadsafe Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>
4 years ago
.caps_internal = FF_CODEC_CAP_INIT_THREADSAFE | FF_CODEC_CAP_INIT_CLEANUP,
avcodec: add Argonaut Games Video decoder
4 years ago
};