forked from KolibriOS/kolibrios
420 lines
14 KiB
C
420 lines
14 KiB
C
/*
|
|
* Delphine Software International CIN Audio/Video Decoders
|
|
* Copyright (c) 2006 Gregory Montoir (cyx@users.sourceforge.net)
|
|
*
|
|
* 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
|
|
* Delphine Software International CIN audio/video decoders
|
|
*/
|
|
|
|
#include "libavutil/channel_layout.h"
|
|
#include "avcodec.h"
|
|
#include "bytestream.h"
|
|
#include "internal.h"
|
|
#include "mathops.h"
|
|
|
|
|
|
typedef enum CinVideoBitmapIndex {
|
|
CIN_CUR_BMP = 0, /* current */
|
|
CIN_PRE_BMP = 1, /* previous */
|
|
CIN_INT_BMP = 2 /* intermediate */
|
|
} CinVideoBitmapIndex;
|
|
|
|
typedef struct CinVideoContext {
|
|
AVCodecContext *avctx;
|
|
AVFrame frame;
|
|
unsigned int bitmap_size;
|
|
uint32_t palette[256];
|
|
uint8_t *bitmap_table[3];
|
|
} CinVideoContext;
|
|
|
|
typedef struct CinAudioContext {
|
|
int initial_decode_frame;
|
|
int delta;
|
|
} CinAudioContext;
|
|
|
|
|
|
/* table defining a geometric sequence with multiplier = 32767 ^ (1 / 128) */
|
|
static const int16_t cinaudio_delta16_table[256] = {
|
|
0, 0, 0, 0, 0, 0, 0, 0,
|
|
0, 0, 0, 0, 0, 0, 0, 0,
|
|
0, 0, 0, -30210, -27853, -25680, -23677, -21829,
|
|
-20126, -18556, -17108, -15774, -14543, -13408, -12362, -11398,
|
|
-10508, -9689, -8933, -8236, -7593, -7001, -6455, -5951,
|
|
-5487, -5059, -4664, -4300, -3964, -3655, -3370, -3107,
|
|
-2865, -2641, -2435, -2245, -2070, -1908, -1759, -1622,
|
|
-1495, -1379, -1271, -1172, -1080, -996, -918, -847,
|
|
-781, -720, -663, -612, -564, -520, -479, -442,
|
|
-407, -376, -346, -319, -294, -271, -250, -230,
|
|
-212, -196, -181, -166, -153, -141, -130, -120,
|
|
-111, -102, -94, -87, -80, -74, -68, -62,
|
|
-58, -53, -49, -45, -41, -38, -35, -32,
|
|
-30, -27, -25, -23, -21, -20, -18, -17,
|
|
-15, -14, -13, -12, -11, -10, -9, -8,
|
|
-7, -6, -5, -4, -3, -2, -1, 0,
|
|
0, 1, 2, 3, 4, 5, 6, 7,
|
|
8, 9, 10, 11, 12, 13, 14, 15,
|
|
17, 18, 20, 21, 23, 25, 27, 30,
|
|
32, 35, 38, 41, 45, 49, 53, 58,
|
|
62, 68, 74, 80, 87, 94, 102, 111,
|
|
120, 130, 141, 153, 166, 181, 196, 212,
|
|
230, 250, 271, 294, 319, 346, 376, 407,
|
|
442, 479, 520, 564, 612, 663, 720, 781,
|
|
847, 918, 996, 1080, 1172, 1271, 1379, 1495,
|
|
1622, 1759, 1908, 2070, 2245, 2435, 2641, 2865,
|
|
3107, 3370, 3655, 3964, 4300, 4664, 5059, 5487,
|
|
5951, 6455, 7001, 7593, 8236, 8933, 9689, 10508,
|
|
11398, 12362, 13408, 14543, 15774, 17108, 18556, 20126,
|
|
21829, 23677, 25680, 27853, 30210, 0, 0, 0,
|
|
0, 0, 0, 0, 0, 0, 0, 0,
|
|
0, 0, 0, 0, 0, 0, 0, 0
|
|
};
|
|
|
|
static av_cold void destroy_buffers(CinVideoContext *cin)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < 3; ++i)
|
|
av_freep(&cin->bitmap_table[i]);
|
|
}
|
|
|
|
static av_cold int allocate_buffers(CinVideoContext *cin)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < 3; ++i) {
|
|
cin->bitmap_table[i] = av_mallocz(cin->bitmap_size);
|
|
if (!cin->bitmap_table[i]) {
|
|
av_log(cin->avctx, AV_LOG_ERROR, "Can't allocate bitmap buffers.\n");
|
|
destroy_buffers(cin);
|
|
return AVERROR(ENOMEM);
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static av_cold int cinvideo_decode_init(AVCodecContext *avctx)
|
|
{
|
|
CinVideoContext *cin = avctx->priv_data;
|
|
|
|
cin->avctx = avctx;
|
|
avctx->pix_fmt = AV_PIX_FMT_PAL8;
|
|
|
|
avcodec_get_frame_defaults(&cin->frame);
|
|
|
|
cin->bitmap_size = avctx->width * avctx->height;
|
|
if (allocate_buffers(cin))
|
|
return AVERROR(ENOMEM);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void cin_apply_delta_data(const unsigned char *src, unsigned char *dst,
|
|
int size)
|
|
{
|
|
while (size--)
|
|
*dst++ += *src++;
|
|
}
|
|
|
|
static int cin_decode_huffman(const unsigned char *src, int src_size,
|
|
unsigned char *dst, int dst_size)
|
|
{
|
|
int b, huff_code = 0;
|
|
unsigned char huff_code_table[15];
|
|
unsigned char *dst_cur = dst;
|
|
unsigned char *dst_end = dst + dst_size;
|
|
const unsigned char *src_end = src + src_size;
|
|
|
|
memcpy(huff_code_table, src, 15);
|
|
src += 15;
|
|
|
|
while (src < src_end) {
|
|
huff_code = *src++;
|
|
if ((huff_code >> 4) == 15) {
|
|
b = huff_code << 4;
|
|
huff_code = *src++;
|
|
*dst_cur++ = b | (huff_code >> 4);
|
|
} else
|
|
*dst_cur++ = huff_code_table[huff_code >> 4];
|
|
if (dst_cur >= dst_end)
|
|
break;
|
|
|
|
huff_code &= 15;
|
|
if (huff_code == 15) {
|
|
*dst_cur++ = *src++;
|
|
} else
|
|
*dst_cur++ = huff_code_table[huff_code];
|
|
if (dst_cur >= dst_end)
|
|
break;
|
|
}
|
|
|
|
return dst_cur - dst;
|
|
}
|
|
|
|
static int cin_decode_lzss(const unsigned char *src, int src_size,
|
|
unsigned char *dst, int dst_size)
|
|
{
|
|
uint16_t cmd;
|
|
int i, sz, offset, code;
|
|
unsigned char *dst_end = dst + dst_size, *dst_start = dst;
|
|
const unsigned char *src_end = src + src_size;
|
|
|
|
while (src < src_end && dst < dst_end) {
|
|
code = *src++;
|
|
for (i = 0; i < 8 && src < src_end && dst < dst_end; ++i) {
|
|
if (code & (1 << i)) {
|
|
*dst++ = *src++;
|
|
} else {
|
|
cmd = AV_RL16(src);
|
|
src += 2;
|
|
offset = cmd >> 4;
|
|
if ((int)(dst - dst_start) < offset + 1)
|
|
return AVERROR_INVALIDDATA;
|
|
sz = (cmd & 0xF) + 2;
|
|
/* don't use memcpy/memmove here as the decoding routine
|
|
* (ab)uses buffer overlappings to repeat bytes in the
|
|
* destination */
|
|
sz = FFMIN(sz, dst_end - dst);
|
|
while (sz--) {
|
|
*dst = *(dst - offset - 1);
|
|
++dst;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int cin_decode_rle(const unsigned char *src, int src_size,
|
|
unsigned char *dst, int dst_size)
|
|
{
|
|
int len, code;
|
|
unsigned char *dst_end = dst + dst_size;
|
|
const unsigned char *src_end = src + src_size;
|
|
|
|
while (src + 1 < src_end && dst < dst_end) {
|
|
code = *src++;
|
|
if (code & 0x80) {
|
|
len = code - 0x7F;
|
|
memset(dst, *src++, FFMIN(len, dst_end - dst));
|
|
} else {
|
|
len = code + 1;
|
|
if (len > src_end-src) {
|
|
av_log(NULL, AV_LOG_ERROR, "RLE overread\n");
|
|
return AVERROR_INVALIDDATA;
|
|
}
|
|
memcpy(dst, src, FFMIN3(len, dst_end - dst, src_end - src));
|
|
src += len;
|
|
}
|
|
dst += len;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int cinvideo_decode_frame(AVCodecContext *avctx,
|
|
void *data, int *got_frame,
|
|
AVPacket *avpkt)
|
|
{
|
|
const uint8_t *buf = avpkt->data;
|
|
int buf_size = avpkt->size;
|
|
CinVideoContext *cin = avctx->priv_data;
|
|
int i, y, palette_type, palette_colors_count,
|
|
bitmap_frame_type, bitmap_frame_size, res = 0;
|
|
|
|
palette_type = buf[0];
|
|
palette_colors_count = AV_RL16(buf + 1);
|
|
bitmap_frame_type = buf[3];
|
|
buf += 4;
|
|
|
|
bitmap_frame_size = buf_size - 4;
|
|
|
|
/* handle palette */
|
|
if (bitmap_frame_size < palette_colors_count * (3 + (palette_type != 0)))
|
|
return AVERROR_INVALIDDATA;
|
|
if (palette_type == 0) {
|
|
if (palette_colors_count > 256)
|
|
return AVERROR_INVALIDDATA;
|
|
for (i = 0; i < palette_colors_count; ++i) {
|
|
cin->palette[i] = 0xFFU << 24 | bytestream_get_le24(&buf);
|
|
bitmap_frame_size -= 3;
|
|
}
|
|
} else {
|
|
for (i = 0; i < palette_colors_count; ++i) {
|
|
cin->palette[buf[0]] = 0xFFU << 24 | AV_RL24(buf + 1);
|
|
buf += 4;
|
|
bitmap_frame_size -= 4;
|
|
}
|
|
}
|
|
|
|
/* note: the decoding routines below assumes that
|
|
* surface.width = surface.pitch */
|
|
switch (bitmap_frame_type) {
|
|
case 9:
|
|
cin_decode_rle(buf, bitmap_frame_size,
|
|
cin->bitmap_table[CIN_CUR_BMP], cin->bitmap_size);
|
|
break;
|
|
case 34:
|
|
cin_decode_rle(buf, bitmap_frame_size,
|
|
cin->bitmap_table[CIN_CUR_BMP], cin->bitmap_size);
|
|
cin_apply_delta_data(cin->bitmap_table[CIN_PRE_BMP],
|
|
cin->bitmap_table[CIN_CUR_BMP], cin->bitmap_size);
|
|
break;
|
|
case 35:
|
|
bitmap_frame_size = cin_decode_huffman(buf, bitmap_frame_size,
|
|
cin->bitmap_table[CIN_INT_BMP], cin->bitmap_size);
|
|
cin_decode_rle(cin->bitmap_table[CIN_INT_BMP], bitmap_frame_size,
|
|
cin->bitmap_table[CIN_CUR_BMP], cin->bitmap_size);
|
|
break;
|
|
case 36:
|
|
bitmap_frame_size = cin_decode_huffman(buf, bitmap_frame_size,
|
|
cin->bitmap_table[CIN_INT_BMP],
|
|
cin->bitmap_size);
|
|
cin_decode_rle(cin->bitmap_table[CIN_INT_BMP], bitmap_frame_size,
|
|
cin->bitmap_table[CIN_CUR_BMP], cin->bitmap_size);
|
|
cin_apply_delta_data(cin->bitmap_table[CIN_PRE_BMP],
|
|
cin->bitmap_table[CIN_CUR_BMP], cin->bitmap_size);
|
|
break;
|
|
case 37:
|
|
cin_decode_huffman(buf, bitmap_frame_size,
|
|
cin->bitmap_table[CIN_CUR_BMP], cin->bitmap_size);
|
|
break;
|
|
case 38:
|
|
res = cin_decode_lzss(buf, bitmap_frame_size,
|
|
cin->bitmap_table[CIN_CUR_BMP],
|
|
cin->bitmap_size);
|
|
if (res < 0)
|
|
return res;
|
|
break;
|
|
case 39:
|
|
res = cin_decode_lzss(buf, bitmap_frame_size,
|
|
cin->bitmap_table[CIN_CUR_BMP],
|
|
cin->bitmap_size);
|
|
if (res < 0)
|
|
return res;
|
|
cin_apply_delta_data(cin->bitmap_table[CIN_PRE_BMP],
|
|
cin->bitmap_table[CIN_CUR_BMP], cin->bitmap_size);
|
|
break;
|
|
}
|
|
|
|
if ((res = ff_reget_buffer(avctx, &cin->frame)) < 0)
|
|
return res;
|
|
|
|
memcpy(cin->frame.data[1], cin->palette, sizeof(cin->palette));
|
|
cin->frame.palette_has_changed = 1;
|
|
for (y = 0; y < cin->avctx->height; ++y)
|
|
memcpy(cin->frame.data[0] + (cin->avctx->height - 1 - y) * cin->frame.linesize[0],
|
|
cin->bitmap_table[CIN_CUR_BMP] + y * cin->avctx->width,
|
|
cin->avctx->width);
|
|
|
|
FFSWAP(uint8_t *, cin->bitmap_table[CIN_CUR_BMP],
|
|
cin->bitmap_table[CIN_PRE_BMP]);
|
|
|
|
if ((res = av_frame_ref(data, &cin->frame)) < 0)
|
|
return res;
|
|
|
|
*got_frame = 1;
|
|
|
|
return buf_size;
|
|
}
|
|
|
|
static av_cold int cinvideo_decode_end(AVCodecContext *avctx)
|
|
{
|
|
CinVideoContext *cin = avctx->priv_data;
|
|
|
|
av_frame_unref(&cin->frame);
|
|
|
|
destroy_buffers(cin);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static av_cold int cinaudio_decode_init(AVCodecContext *avctx)
|
|
{
|
|
CinAudioContext *cin = avctx->priv_data;
|
|
|
|
cin->initial_decode_frame = 1;
|
|
cin->delta = 0;
|
|
avctx->sample_fmt = AV_SAMPLE_FMT_S16;
|
|
avctx->channels = 1;
|
|
avctx->channel_layout = AV_CH_LAYOUT_MONO;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int cinaudio_decode_frame(AVCodecContext *avctx, void *data,
|
|
int *got_frame_ptr, AVPacket *avpkt)
|
|
{
|
|
AVFrame *frame = data;
|
|
const uint8_t *buf = avpkt->data;
|
|
CinAudioContext *cin = avctx->priv_data;
|
|
const uint8_t *buf_end = buf + avpkt->size;
|
|
int16_t *samples;
|
|
int delta, ret;
|
|
|
|
/* get output buffer */
|
|
frame->nb_samples = avpkt->size - cin->initial_decode_frame;
|
|
if ((ret = ff_get_buffer(avctx, frame, 0)) < 0)
|
|
return ret;
|
|
samples = (int16_t *)frame->data[0];
|
|
|
|
delta = cin->delta;
|
|
if (cin->initial_decode_frame) {
|
|
cin->initial_decode_frame = 0;
|
|
delta = sign_extend(AV_RL16(buf), 16);
|
|
buf += 2;
|
|
*samples++ = delta;
|
|
}
|
|
while (buf < buf_end) {
|
|
delta += cinaudio_delta16_table[*buf++];
|
|
delta = av_clip_int16(delta);
|
|
*samples++ = delta;
|
|
}
|
|
cin->delta = delta;
|
|
|
|
*got_frame_ptr = 1;
|
|
|
|
return avpkt->size;
|
|
}
|
|
|
|
AVCodec ff_dsicinvideo_decoder = {
|
|
.name = "dsicinvideo",
|
|
.long_name = NULL_IF_CONFIG_SMALL("Delphine Software International CIN video"),
|
|
.type = AVMEDIA_TYPE_VIDEO,
|
|
.id = AV_CODEC_ID_DSICINVIDEO,
|
|
.priv_data_size = sizeof(CinVideoContext),
|
|
.init = cinvideo_decode_init,
|
|
.close = cinvideo_decode_end,
|
|
.decode = cinvideo_decode_frame,
|
|
.capabilities = CODEC_CAP_DR1,
|
|
};
|
|
|
|
AVCodec ff_dsicinaudio_decoder = {
|
|
.name = "dsicinaudio",
|
|
.long_name = NULL_IF_CONFIG_SMALL("Delphine Software International CIN audio"),
|
|
.type = AVMEDIA_TYPE_AUDIO,
|
|
.id = AV_CODEC_ID_DSICINAUDIO,
|
|
.priv_data_size = sizeof(CinAudioContext),
|
|
.init = cinaudio_decode_init,
|
|
.decode = cinaudio_decode_frame,
|
|
.capabilities = CODEC_CAP_DR1,
|
|
};
|