|
|
|
@ -56,14 +56,8 @@ typedef struct IpvideoContext { |
|
|
|
|
const unsigned char *decoding_map; |
|
|
|
|
int decoding_map_size; |
|
|
|
|
|
|
|
|
|
const unsigned char *buf; |
|
|
|
|
int size; |
|
|
|
|
|
|
|
|
|
int is_16bpp; |
|
|
|
|
const unsigned char *stream_ptr; |
|
|
|
|
const unsigned char *stream_end; |
|
|
|
|
const uint8_t *mv_ptr; |
|
|
|
|
const uint8_t *mv_end; |
|
|
|
|
GetByteContext stream_ptr, mv_ptr; |
|
|
|
|
unsigned char *pixel_ptr; |
|
|
|
|
int line_inc; |
|
|
|
|
int stride; |
|
|
|
@ -72,13 +66,6 @@ typedef struct IpvideoContext { |
|
|
|
|
uint32_t pal[256]; |
|
|
|
|
} IpvideoContext; |
|
|
|
|
|
|
|
|
|
#define CHECK_STREAM_PTR(stream_ptr, stream_end, n) \ |
|
|
|
|
if (stream_end - stream_ptr < n) { \
|
|
|
|
|
av_log(s->avctx, AV_LOG_ERROR, "stream_ptr out of bounds (%p >= %p)\n", \
|
|
|
|
|
stream_ptr + n, stream_end); \
|
|
|
|
|
return -1; \
|
|
|
|
|
} |
|
|
|
|
|
|
|
|
|
static int copy_from(IpvideoContext *s, AVFrame *src, int delta_x, int delta_y) |
|
|
|
|
{ |
|
|
|
|
int current_offset = s->pixel_ptr - s->current_frame.data[0]; |
|
|
|
@ -118,11 +105,9 @@ static int ipvideo_decode_block_opcode_0x2(IpvideoContext *s) |
|
|
|
|
|
|
|
|
|
/* copy block from 2 frames ago using a motion vector; need 1 more byte */ |
|
|
|
|
if (!s->is_16bpp) { |
|
|
|
|
CHECK_STREAM_PTR(s->stream_ptr, s->stream_end, 1); |
|
|
|
|
B = *s->stream_ptr++; |
|
|
|
|
B = bytestream2_get_byte(&s->stream_ptr); |
|
|
|
|
} else { |
|
|
|
|
CHECK_STREAM_PTR(s->mv_ptr, s->mv_end, 1); |
|
|
|
|
B = *s->mv_ptr++; |
|
|
|
|
B = bytestream2_get_byte(&s->mv_ptr); |
|
|
|
|
} |
|
|
|
|
|
|
|
|
|
if (B < 56) { |
|
|
|
@ -146,11 +131,9 @@ static int ipvideo_decode_block_opcode_0x3(IpvideoContext *s) |
|
|
|
|
|
|
|
|
|
/* need 1 more byte for motion */ |
|
|
|
|
if (!s->is_16bpp) { |
|
|
|
|
CHECK_STREAM_PTR(s->stream_ptr, s->stream_end, 1); |
|
|
|
|
B = *s->stream_ptr++; |
|
|
|
|
B = bytestream2_get_byte(&s->stream_ptr); |
|
|
|
|
} else { |
|
|
|
|
CHECK_STREAM_PTR(s->mv_ptr, s->mv_end, 1); |
|
|
|
|
B = *s->mv_ptr++; |
|
|
|
|
B = bytestream2_get_byte(&s->mv_ptr); |
|
|
|
|
} |
|
|
|
|
|
|
|
|
|
if (B < 56) { |
|
|
|
@ -172,11 +155,9 @@ static int ipvideo_decode_block_opcode_0x4(IpvideoContext *s) |
|
|
|
|
|
|
|
|
|
/* copy a block from the previous frame; need 1 more byte */ |
|
|
|
|
if (!s->is_16bpp) { |
|
|
|
|
CHECK_STREAM_PTR(s->stream_ptr, s->stream_end, 1); |
|
|
|
|
B = *s->stream_ptr++; |
|
|
|
|
B = bytestream2_get_byte(&s->stream_ptr); |
|
|
|
|
} else { |
|
|
|
|
CHECK_STREAM_PTR(s->mv_ptr, s->mv_end, 1); |
|
|
|
|
B = *s->mv_ptr++; |
|
|
|
|
B = bytestream2_get_byte(&s->mv_ptr); |
|
|
|
|
} |
|
|
|
|
|
|
|
|
|
BL = B & 0x0F; |
|
|
|
@ -194,10 +175,8 @@ static int ipvideo_decode_block_opcode_0x5(IpvideoContext *s) |
|
|
|
|
|
|
|
|
|
/* copy a block from the previous frame using an expanded range;
|
|
|
|
|
* need 2 more bytes */ |
|
|
|
|
CHECK_STREAM_PTR(s->stream_ptr, s->stream_end, 2); |
|
|
|
|
|
|
|
|
|
x = *s->stream_ptr++; |
|
|
|
|
y = *s->stream_ptr++; |
|
|
|
|
x = bytestream2_get_byte(&s->stream_ptr); |
|
|
|
|
y = bytestream2_get_byte(&s->stream_ptr); |
|
|
|
|
|
|
|
|
|
av_dlog(s->avctx, "motion bytes = %d, %d\n", x, y); |
|
|
|
|
return copy_from(s, &s->last_frame, x, y); |
|
|
|
@ -219,18 +198,14 @@ static int ipvideo_decode_block_opcode_0x7(IpvideoContext *s) |
|
|
|
|
unsigned int flags; |
|
|
|
|
|
|
|
|
|
/* 2-color encoding */ |
|
|
|
|
CHECK_STREAM_PTR(s->stream_ptr, s->stream_end, 2); |
|
|
|
|
|
|
|
|
|
P[0] = *s->stream_ptr++; |
|
|
|
|
P[1] = *s->stream_ptr++; |
|
|
|
|
P[0] = bytestream2_get_byte(&s->stream_ptr); |
|
|
|
|
P[1] = bytestream2_get_byte(&s->stream_ptr); |
|
|
|
|
|
|
|
|
|
if (P[0] <= P[1]) { |
|
|
|
|
|
|
|
|
|
/* need 8 more bytes from the stream */ |
|
|
|
|
CHECK_STREAM_PTR(s->stream_ptr, s->stream_end, 8); |
|
|
|
|
|
|
|
|
|
for (y = 0; y < 8; y++) { |
|
|
|
|
flags = *s->stream_ptr++ | 0x100; |
|
|
|
|
flags = bytestream2_get_byte(&s->stream_ptr) | 0x100; |
|
|
|
|
for (; flags != 1; flags >>= 1) |
|
|
|
|
*s->pixel_ptr++ = P[flags & 1]; |
|
|
|
|
s->pixel_ptr += s->line_inc; |
|
|
|
@ -239,9 +214,7 @@ static int ipvideo_decode_block_opcode_0x7(IpvideoContext *s) |
|
|
|
|
} else { |
|
|
|
|
|
|
|
|
|
/* need 2 more bytes from the stream */ |
|
|
|
|
CHECK_STREAM_PTR(s->stream_ptr, s->stream_end, 2); |
|
|
|
|
|
|
|
|
|
flags = bytestream_get_le16(&s->stream_ptr); |
|
|
|
|
flags = bytestream2_get_le16(&s->stream_ptr); |
|
|
|
|
for (y = 0; y < 8; y += 2) { |
|
|
|
|
for (x = 0; x < 8; x += 2, flags >>= 1) { |
|
|
|
|
s->pixel_ptr[x ] = |
|
|
|
@ -260,26 +233,23 @@ static int ipvideo_decode_block_opcode_0x7(IpvideoContext *s) |
|
|
|
|
static int ipvideo_decode_block_opcode_0x8(IpvideoContext *s) |
|
|
|
|
{ |
|
|
|
|
int x, y; |
|
|
|
|
unsigned char P[2]; |
|
|
|
|
unsigned char P[4]; |
|
|
|
|
unsigned int flags = 0; |
|
|
|
|
|
|
|
|
|
/* 2-color encoding for each 4x4 quadrant, or 2-color encoding on
|
|
|
|
|
* either top and bottom or left and right halves */ |
|
|
|
|
CHECK_STREAM_PTR(s->stream_ptr, s->stream_end, 2); |
|
|
|
|
|
|
|
|
|
P[0] = *s->stream_ptr++; |
|
|
|
|
P[1] = *s->stream_ptr++; |
|
|
|
|
P[0] = bytestream2_get_byte(&s->stream_ptr); |
|
|
|
|
P[1] = bytestream2_get_byte(&s->stream_ptr); |
|
|
|
|
|
|
|
|
|
if (P[0] <= P[1]) { |
|
|
|
|
|
|
|
|
|
CHECK_STREAM_PTR(s->stream_ptr, s->stream_end, 14); |
|
|
|
|
s->stream_ptr -= 2; |
|
|
|
|
|
|
|
|
|
for (y = 0; y < 16; y++) { |
|
|
|
|
// new values for each 4x4 block
|
|
|
|
|
if (!(y & 3)) { |
|
|
|
|
P[0] = *s->stream_ptr++; P[1] = *s->stream_ptr++; |
|
|
|
|
flags = bytestream_get_le16(&s->stream_ptr); |
|
|
|
|
if (y) { |
|
|
|
|
P[0] = bytestream2_get_byte(&s->stream_ptr); |
|
|
|
|
P[1] = bytestream2_get_byte(&s->stream_ptr); |
|
|
|
|
} |
|
|
|
|
flags = bytestream2_get_le16(&s->stream_ptr); |
|
|
|
|
} |
|
|
|
|
|
|
|
|
|
for (x = 0; x < 4; x++, flags >>= 1) |
|
|
|
@ -290,13 +260,11 @@ static int ipvideo_decode_block_opcode_0x8(IpvideoContext *s) |
|
|
|
|
} |
|
|
|
|
|
|
|
|
|
} else { |
|
|
|
|
flags = bytestream2_get_le32(&s->stream_ptr); |
|
|
|
|
P[2] = bytestream2_get_byte(&s->stream_ptr); |
|
|
|
|
P[3] = bytestream2_get_byte(&s->stream_ptr); |
|
|
|
|
|
|
|
|
|
/* need 10 more bytes */ |
|
|
|
|
CHECK_STREAM_PTR(s->stream_ptr, s->stream_end, 10); |
|
|
|
|
|
|
|
|
|
if (s->stream_ptr[4] <= s->stream_ptr[5]) { |
|
|
|
|
|
|
|
|
|
flags = bytestream_get_le32(&s->stream_ptr); |
|
|
|
|
if (P[2] <= P[3]) { |
|
|
|
|
|
|
|
|
|
/* vertical split; left & right halves are 2-color encoded */ |
|
|
|
|
|
|
|
|
@ -307,8 +275,9 @@ static int ipvideo_decode_block_opcode_0x8(IpvideoContext *s) |
|
|
|
|
// switch to right half
|
|
|
|
|
if (y == 7) { |
|
|
|
|
s->pixel_ptr -= 8 * s->stride - 4; |
|
|
|
|
P[0] = *s->stream_ptr++; P[1] = *s->stream_ptr++; |
|
|
|
|
flags = bytestream_get_le32(&s->stream_ptr); |
|
|
|
|
P[0] = P[2]; |
|
|
|
|
P[1] = P[3]; |
|
|
|
|
flags = bytestream2_get_le32(&s->stream_ptr); |
|
|
|
|
} |
|
|
|
|
} |
|
|
|
|
|
|
|
|
@ -318,12 +287,12 @@ static int ipvideo_decode_block_opcode_0x8(IpvideoContext *s) |
|
|
|
|
|
|
|
|
|
for (y = 0; y < 8; y++) { |
|
|
|
|
if (y == 4) { |
|
|
|
|
P[0] = *s->stream_ptr++; |
|
|
|
|
P[1] = *s->stream_ptr++; |
|
|
|
|
P[0] = P[2]; |
|
|
|
|
P[1] = P[3]; |
|
|
|
|
flags = bytestream2_get_le32(&s->stream_ptr); |
|
|
|
|
} |
|
|
|
|
flags = *s->stream_ptr++ | 0x100; |
|
|
|
|
|
|
|
|
|
for (; flags != 1; flags >>= 1) |
|
|
|
|
for (x = 0; x < 8; x++, flags >>= 1) |
|
|
|
|
*s->pixel_ptr++ = P[flags & 1]; |
|
|
|
|
s->pixel_ptr += s->line_inc; |
|
|
|
|
} |
|
|
|
@ -340,20 +309,15 @@ static int ipvideo_decode_block_opcode_0x9(IpvideoContext *s) |
|
|
|
|
unsigned char P[4]; |
|
|
|
|
|
|
|
|
|
/* 4-color encoding */ |
|
|
|
|
CHECK_STREAM_PTR(s->stream_ptr, s->stream_end, 4); |
|
|
|
|
|
|
|
|
|
memcpy(P, s->stream_ptr, 4); |
|
|
|
|
s->stream_ptr += 4; |
|
|
|
|
bytestream2_get_buffer(&s->stream_ptr, P, 4); |
|
|
|
|
|
|
|
|
|
if (P[0] <= P[1]) { |
|
|
|
|
if (P[2] <= P[3]) { |
|
|
|
|
|
|
|
|
|
/* 1 of 4 colors for each pixel, need 16 more bytes */ |
|
|
|
|
CHECK_STREAM_PTR(s->stream_ptr, s->stream_end, 16); |
|
|
|
|
|
|
|
|
|
for (y = 0; y < 8; y++) { |
|
|
|
|
/* get the next set of 8 2-bit flags */ |
|
|
|
|
int flags = bytestream_get_le16(&s->stream_ptr); |
|
|
|
|
int flags = bytestream2_get_le16(&s->stream_ptr); |
|
|
|
|
for (x = 0; x < 8; x++, flags >>= 2) |
|
|
|
|
*s->pixel_ptr++ = P[flags & 0x03]; |
|
|
|
|
s->pixel_ptr += s->line_inc; |
|
|
|
@ -363,9 +327,7 @@ static int ipvideo_decode_block_opcode_0x9(IpvideoContext *s) |
|
|
|
|
uint32_t flags; |
|
|
|
|
|
|
|
|
|
/* 1 of 4 colors for each 2x2 block, need 4 more bytes */ |
|
|
|
|
CHECK_STREAM_PTR(s->stream_ptr, s->stream_end, 4); |
|
|
|
|
|
|
|
|
|
flags = bytestream_get_le32(&s->stream_ptr); |
|
|
|
|
flags = bytestream2_get_le32(&s->stream_ptr); |
|
|
|
|
|
|
|
|
|
for (y = 0; y < 8; y += 2) { |
|
|
|
|
for (x = 0; x < 8; x += 2, flags >>= 2) { |
|
|
|
@ -382,9 +344,7 @@ static int ipvideo_decode_block_opcode_0x9(IpvideoContext *s) |
|
|
|
|
uint64_t flags; |
|
|
|
|
|
|
|
|
|
/* 1 of 4 colors for each 2x1 or 1x2 block, need 8 more bytes */ |
|
|
|
|
CHECK_STREAM_PTR(s->stream_ptr, s->stream_end, 8); |
|
|
|
|
|
|
|
|
|
flags = bytestream_get_le64(&s->stream_ptr); |
|
|
|
|
flags = bytestream2_get_le64(&s->stream_ptr); |
|
|
|
|
if (P[2] <= P[3]) { |
|
|
|
|
for (y = 0; y < 8; y++) { |
|
|
|
|
for (x = 0; x < 8; x += 2, flags >>= 2) { |
|
|
|
@ -411,24 +371,21 @@ static int ipvideo_decode_block_opcode_0x9(IpvideoContext *s) |
|
|
|
|
static int ipvideo_decode_block_opcode_0xA(IpvideoContext *s) |
|
|
|
|
{ |
|
|
|
|
int x, y; |
|
|
|
|
unsigned char P[4]; |
|
|
|
|
unsigned char P[8]; |
|
|
|
|
int flags = 0; |
|
|
|
|
|
|
|
|
|
bytestream2_get_buffer(&s->stream_ptr, P, 4); |
|
|
|
|
|
|
|
|
|
/* 4-color encoding for each 4x4 quadrant, or 4-color encoding on
|
|
|
|
|
* either top and bottom or left and right halves */ |
|
|
|
|
CHECK_STREAM_PTR(s->stream_ptr, s->stream_end, 24); |
|
|
|
|
|
|
|
|
|
if (s->stream_ptr[0] <= s->stream_ptr[1]) { |
|
|
|
|
if (P[0] <= P[1]) { |
|
|
|
|
|
|
|
|
|
/* 4-color encoding for each quadrant; need 32 bytes */ |
|
|
|
|
CHECK_STREAM_PTR(s->stream_ptr, s->stream_end, 32); |
|
|
|
|
|
|
|
|
|
for (y = 0; y < 16; y++) { |
|
|
|
|
// new values for each 4x4 block
|
|
|
|
|
if (!(y & 3)) { |
|
|
|
|
memcpy(P, s->stream_ptr, 4); |
|
|
|
|
s->stream_ptr += 4; |
|
|
|
|
flags = bytestream_get_le32(&s->stream_ptr); |
|
|
|
|
if (y) bytestream2_get_buffer(&s->stream_ptr, P, 4); |
|
|
|
|
flags = bytestream2_get_le32(&s->stream_ptr); |
|
|
|
|
} |
|
|
|
|
|
|
|
|
|
for (x = 0; x < 4; x++, flags >>= 2) |
|
|
|
@ -441,20 +398,16 @@ static int ipvideo_decode_block_opcode_0xA(IpvideoContext *s) |
|
|
|
|
|
|
|
|
|
} else { |
|
|
|
|
// vertical split?
|
|
|
|
|
int vert = s->stream_ptr[12] <= s->stream_ptr[13]; |
|
|
|
|
uint64_t flags = 0; |
|
|
|
|
int vert; |
|
|
|
|
uint64_t flags = bytestream2_get_le64(&s->stream_ptr); |
|
|
|
|
|
|
|
|
|
bytestream2_get_buffer(&s->stream_ptr, P + 4, 4); |
|
|
|
|
vert = P[4] <= P[5]; |
|
|
|
|
|
|
|
|
|
/* 4-color encoding for either left and right or top and bottom
|
|
|
|
|
* halves */ |
|
|
|
|
|
|
|
|
|
for (y = 0; y < 16; y++) { |
|
|
|
|
// load values for each half
|
|
|
|
|
if (!(y & 7)) { |
|
|
|
|
memcpy(P, s->stream_ptr, 4); |
|
|
|
|
s->stream_ptr += 4; |
|
|
|
|
flags = bytestream_get_le64(&s->stream_ptr); |
|
|
|
|
} |
|
|
|
|
|
|
|
|
|
for (x = 0; x < 4; x++, flags >>= 2) |
|
|
|
|
*s->pixel_ptr++ = P[flags & 0x03]; |
|
|
|
|
|
|
|
|
@ -463,6 +416,12 @@ static int ipvideo_decode_block_opcode_0xA(IpvideoContext *s) |
|
|
|
|
// switch to right half
|
|
|
|
|
if (y == 7) s->pixel_ptr -= 8 * s->stride - 4; |
|
|
|
|
} else if (y & 1) s->pixel_ptr += s->line_inc; |
|
|
|
|
|
|
|
|
|
// load values for second half
|
|
|
|
|
if (y == 7) { |
|
|
|
|
memcpy(P, P + 4, 4); |
|
|
|
|
flags = bytestream2_get_le64(&s->stream_ptr); |
|
|
|
|
} |
|
|
|
|
} |
|
|
|
|
} |
|
|
|
|
|
|
|
|
@ -475,11 +434,8 @@ static int ipvideo_decode_block_opcode_0xB(IpvideoContext *s) |
|
|
|
|
int y; |
|
|
|
|
|
|
|
|
|
/* 64-color encoding (each pixel in block is a different color) */ |
|
|
|
|
CHECK_STREAM_PTR(s->stream_ptr, s->stream_end, 64); |
|
|
|
|
|
|
|
|
|
for (y = 0; y < 8; y++) { |
|
|
|
|
memcpy(s->pixel_ptr, s->stream_ptr, 8); |
|
|
|
|
s->stream_ptr += 8; |
|
|
|
|
bytestream2_get_buffer(&s->stream_ptr, s->pixel_ptr, 8); |
|
|
|
|
s->pixel_ptr += s->stride; |
|
|
|
|
} |
|
|
|
|
|
|
|
|
@ -492,14 +448,12 @@ static int ipvideo_decode_block_opcode_0xC(IpvideoContext *s) |
|
|
|
|
int x, y; |
|
|
|
|
|
|
|
|
|
/* 16-color block encoding: each 2x2 block is a different color */ |
|
|
|
|
CHECK_STREAM_PTR(s->stream_ptr, s->stream_end, 16); |
|
|
|
|
|
|
|
|
|
for (y = 0; y < 8; y += 2) { |
|
|
|
|
for (x = 0; x < 8; x += 2) { |
|
|
|
|
s->pixel_ptr[x ] = |
|
|
|
|
s->pixel_ptr[x + 1 ] = |
|
|
|
|
s->pixel_ptr[x + s->stride] = |
|
|
|
|
s->pixel_ptr[x + 1 + s->stride] = *s->stream_ptr++; |
|
|
|
|
s->pixel_ptr[x + 1 + s->stride] = bytestream2_get_byte(&s->stream_ptr); |
|
|
|
|
} |
|
|
|
|
s->pixel_ptr += s->stride * 2; |
|
|
|
|
} |
|
|
|
@ -514,12 +468,10 @@ static int ipvideo_decode_block_opcode_0xD(IpvideoContext *s) |
|
|
|
|
unsigned char P[2]; |
|
|
|
|
|
|
|
|
|
/* 4-color block encoding: each 4x4 block is a different color */ |
|
|
|
|
CHECK_STREAM_PTR(s->stream_ptr, s->stream_end, 4); |
|
|
|
|
|
|
|
|
|
for (y = 0; y < 8; y++) { |
|
|
|
|
if (!(y & 3)) { |
|
|
|
|
P[0] = *s->stream_ptr++; |
|
|
|
|
P[1] = *s->stream_ptr++; |
|
|
|
|
P[0] = bytestream2_get_byte(&s->stream_ptr); |
|
|
|
|
P[1] = bytestream2_get_byte(&s->stream_ptr); |
|
|
|
|
} |
|
|
|
|
memset(s->pixel_ptr, P[0], 4); |
|
|
|
|
memset(s->pixel_ptr + 4, P[1], 4); |
|
|
|
@ -536,8 +488,7 @@ static int ipvideo_decode_block_opcode_0xE(IpvideoContext *s) |
|
|
|
|
unsigned char pix; |
|
|
|
|
|
|
|
|
|
/* 1-color encoding: the whole block is 1 solid color */ |
|
|
|
|
CHECK_STREAM_PTR(s->stream_ptr, s->stream_end, 1); |
|
|
|
|
pix = *s->stream_ptr++; |
|
|
|
|
pix = bytestream2_get_byte(&s->stream_ptr); |
|
|
|
|
|
|
|
|
|
for (y = 0; y < 8; y++) { |
|
|
|
|
memset(s->pixel_ptr, pix, 8); |
|
|
|
@ -554,9 +505,8 @@ static int ipvideo_decode_block_opcode_0xF(IpvideoContext *s) |
|
|
|
|
unsigned char sample[2]; |
|
|
|
|
|
|
|
|
|
/* dithered encoding */ |
|
|
|
|
CHECK_STREAM_PTR(s->stream_ptr, s->stream_end, 2); |
|
|
|
|
sample[0] = *s->stream_ptr++; |
|
|
|
|
sample[1] = *s->stream_ptr++; |
|
|
|
|
sample[0] = bytestream2_get_byte(&s->stream_ptr); |
|
|
|
|
sample[1] = bytestream2_get_byte(&s->stream_ptr); |
|
|
|
|
|
|
|
|
|
for (y = 0; y < 8; y++) { |
|
|
|
|
for (x = 0; x < 8; x += 2) { |
|
|
|
@ -575,10 +525,8 @@ static int ipvideo_decode_block_opcode_0x6_16(IpvideoContext *s) |
|
|
|
|
signed char x, y; |
|
|
|
|
|
|
|
|
|
/* copy a block from the second last frame using an expanded range */ |
|
|
|
|
CHECK_STREAM_PTR(s->stream_ptr, s->stream_end, 2); |
|
|
|
|
|
|
|
|
|
x = *s->stream_ptr++; |
|
|
|
|
y = *s->stream_ptr++; |
|
|
|
|
x = bytestream2_get_byte(&s->stream_ptr); |
|
|
|
|
y = bytestream2_get_byte(&s->stream_ptr); |
|
|
|
|
|
|
|
|
|
av_dlog(s->avctx, "motion bytes = %d, %d\n", x, y); |
|
|
|
|
return copy_from(s, &s->second_last_frame, x, y); |
|
|
|
@ -592,17 +540,13 @@ static int ipvideo_decode_block_opcode_0x7_16(IpvideoContext *s) |
|
|
|
|
uint16_t *pixel_ptr = (uint16_t*)s->pixel_ptr; |
|
|
|
|
|
|
|
|
|
/* 2-color encoding */ |
|
|
|
|
CHECK_STREAM_PTR(s->stream_ptr, s->stream_end, 4); |
|
|
|
|
|
|
|
|
|
P[0] = bytestream_get_le16(&s->stream_ptr); |
|
|
|
|
P[1] = bytestream_get_le16(&s->stream_ptr); |
|
|
|
|
P[0] = bytestream2_get_le16(&s->stream_ptr); |
|
|
|
|
P[1] = bytestream2_get_le16(&s->stream_ptr); |
|
|
|
|
|
|
|
|
|
if (!(P[0] & 0x8000)) { |
|
|
|
|
|
|
|
|
|
CHECK_STREAM_PTR(s->stream_ptr, s->stream_end, 8); |
|
|
|
|
|
|
|
|
|
for (y = 0; y < 8; y++) { |
|
|
|
|
flags = *s->stream_ptr++ | 0x100; |
|
|
|
|
flags = bytestream2_get_byte(&s->stream_ptr) | 0x100; |
|
|
|
|
for (; flags != 1; flags >>= 1) |
|
|
|
|
*pixel_ptr++ = P[flags & 1]; |
|
|
|
|
pixel_ptr += s->line_inc; |
|
|
|
@ -610,9 +554,7 @@ static int ipvideo_decode_block_opcode_0x7_16(IpvideoContext *s) |
|
|
|
|
|
|
|
|
|
} else { |
|
|
|
|
|
|
|
|
|
CHECK_STREAM_PTR(s->stream_ptr, s->stream_end, 2); |
|
|
|
|
|
|
|
|
|
flags = bytestream_get_le16(&s->stream_ptr); |
|
|
|
|
flags = bytestream2_get_le16(&s->stream_ptr); |
|
|
|
|
for (y = 0; y < 8; y += 2) { |
|
|
|
|
for (x = 0; x < 8; x += 2, flags >>= 1) { |
|
|
|
|
pixel_ptr[x ] = |
|
|
|
@ -630,28 +572,25 @@ static int ipvideo_decode_block_opcode_0x7_16(IpvideoContext *s) |
|
|
|
|
static int ipvideo_decode_block_opcode_0x8_16(IpvideoContext *s) |
|
|
|
|
{ |
|
|
|
|
int x, y; |
|
|
|
|
uint16_t P[2]; |
|
|
|
|
uint16_t P[4]; |
|
|
|
|
unsigned int flags = 0; |
|
|
|
|
uint16_t *pixel_ptr = (uint16_t*)s->pixel_ptr; |
|
|
|
|
|
|
|
|
|
/* 2-color encoding for each 4x4 quadrant, or 2-color encoding on
|
|
|
|
|
* either top and bottom or left and right halves */ |
|
|
|
|
CHECK_STREAM_PTR(s->stream_ptr, s->stream_end, 4); |
|
|
|
|
|
|
|
|
|
P[0] = bytestream_get_le16(&s->stream_ptr); |
|
|
|
|
P[1] = bytestream_get_le16(&s->stream_ptr); |
|
|
|
|
P[0] = bytestream2_get_le16(&s->stream_ptr); |
|
|
|
|
P[1] = bytestream2_get_le16(&s->stream_ptr); |
|
|
|
|
|
|
|
|
|
if (!(P[0] & 0x8000)) { |
|
|
|
|
|
|
|
|
|
CHECK_STREAM_PTR(s->stream_ptr, s->stream_end, 24); |
|
|
|
|
s->stream_ptr -= 4; |
|
|
|
|
|
|
|
|
|
for (y = 0; y < 16; y++) { |
|
|
|
|
// new values for each 4x4 block
|
|
|
|
|
if (!(y & 3)) { |
|
|
|
|
P[0] = bytestream_get_le16(&s->stream_ptr); |
|
|
|
|
P[1] = bytestream_get_le16(&s->stream_ptr); |
|
|
|
|
flags = bytestream_get_le16(&s->stream_ptr); |
|
|
|
|
if (y) { |
|
|
|
|
P[0] = bytestream2_get_le16(&s->stream_ptr); |
|
|
|
|
P[1] = bytestream2_get_le16(&s->stream_ptr); |
|
|
|
|
} |
|
|
|
|
flags = bytestream2_get_le16(&s->stream_ptr); |
|
|
|
|
} |
|
|
|
|
|
|
|
|
|
for (x = 0; x < 4; x++, flags >>= 1) |
|
|
|
@ -663,11 +602,11 @@ static int ipvideo_decode_block_opcode_0x8_16(IpvideoContext *s) |
|
|
|
|
|
|
|
|
|
} else { |
|
|
|
|
|
|
|
|
|
CHECK_STREAM_PTR(s->stream_ptr, s->stream_end, 12); |
|
|
|
|
|
|
|
|
|
if (!(AV_RL16(s->stream_ptr + 4) & 0x8000)) { |
|
|
|
|
flags = bytestream2_get_le32(&s->stream_ptr); |
|
|
|
|
P[2] = bytestream2_get_le16(&s->stream_ptr); |
|
|
|
|
P[3] = bytestream2_get_le16(&s->stream_ptr); |
|
|
|
|
|
|
|
|
|
flags = bytestream_get_le32(&s->stream_ptr); |
|
|
|
|
if (!(P[2] & 0x8000)) { |
|
|
|
|
|
|
|
|
|
/* vertical split; left & right halves are 2-color encoded */ |
|
|
|
|
|
|
|
|
@ -678,9 +617,9 @@ static int ipvideo_decode_block_opcode_0x8_16(IpvideoContext *s) |
|
|
|
|
// switch to right half
|
|
|
|
|
if (y == 7) { |
|
|
|
|
pixel_ptr -= 8 * s->stride - 4; |
|
|
|
|
P[0] = bytestream_get_le16(&s->stream_ptr); |
|
|
|
|
P[1] = bytestream_get_le16(&s->stream_ptr); |
|
|
|
|
flags = bytestream_get_le32(&s->stream_ptr); |
|
|
|
|
P[0] = P[2]; |
|
|
|
|
P[1] = P[3]; |
|
|
|
|
flags = bytestream2_get_le32(&s->stream_ptr); |
|
|
|
|
} |
|
|
|
|
} |
|
|
|
|
|
|
|
|
@ -690,12 +629,12 @@ static int ipvideo_decode_block_opcode_0x8_16(IpvideoContext *s) |
|
|
|
|
|
|
|
|
|
for (y = 0; y < 8; y++) { |
|
|
|
|
if (y == 4) { |
|
|
|
|
P[0] = bytestream_get_le16(&s->stream_ptr); |
|
|
|
|
P[1] = bytestream_get_le16(&s->stream_ptr); |
|
|
|
|
P[0] = P[2]; |
|
|
|
|
P[1] = P[3]; |
|
|
|
|
flags = bytestream2_get_le32(&s->stream_ptr); |
|
|
|
|
} |
|
|
|
|
flags = *s->stream_ptr++ | 0x100; |
|
|
|
|
|
|
|
|
|
for (; flags != 1; flags >>= 1) |
|
|
|
|
for (x = 0; x < 8; x++, flags >>= 1) |
|
|
|
|
*pixel_ptr++ = P[flags & 1]; |
|
|
|
|
pixel_ptr += s->line_inc; |
|
|
|
|
} |
|
|
|
@ -713,20 +652,16 @@ static int ipvideo_decode_block_opcode_0x9_16(IpvideoContext *s) |
|
|
|
|
uint16_t *pixel_ptr = (uint16_t*)s->pixel_ptr; |
|
|
|
|
|
|
|
|
|
/* 4-color encoding */ |
|
|
|
|
CHECK_STREAM_PTR(s->stream_ptr, s->stream_end, 8); |
|
|
|
|
|
|
|
|
|
for (x = 0; x < 4; x++) |
|
|
|
|
P[x] = bytestream_get_le16(&s->stream_ptr); |
|
|
|
|
P[x] = bytestream2_get_le16(&s->stream_ptr); |
|
|
|
|
|
|
|
|
|
if (!(P[0] & 0x8000)) { |
|
|
|
|
if (!(P[2] & 0x8000)) { |
|
|
|
|
|
|
|
|
|
/* 1 of 4 colors for each pixel */ |
|
|
|
|
CHECK_STREAM_PTR(s->stream_ptr, s->stream_end, 16); |
|
|
|
|
|
|
|
|
|
for (y = 0; y < 8; y++) { |
|
|
|
|
/* get the next set of 8 2-bit flags */ |
|
|
|
|
int flags = bytestream_get_le16(&s->stream_ptr); |
|
|
|
|
int flags = bytestream2_get_le16(&s->stream_ptr); |
|
|
|
|
for (x = 0; x < 8; x++, flags >>= 2) |
|
|
|
|
*pixel_ptr++ = P[flags & 0x03]; |
|
|
|
|
pixel_ptr += s->line_inc; |
|
|
|
@ -736,9 +671,7 @@ static int ipvideo_decode_block_opcode_0x9_16(IpvideoContext *s) |
|
|
|
|
uint32_t flags; |
|
|
|
|
|
|
|
|
|
/* 1 of 4 colors for each 2x2 block */ |
|
|
|
|
CHECK_STREAM_PTR(s->stream_ptr, s->stream_end, 4); |
|
|
|
|
|
|
|
|
|
flags = bytestream_get_le32(&s->stream_ptr); |
|
|
|
|
flags = bytestream2_get_le32(&s->stream_ptr); |
|
|
|
|
|
|
|
|
|
for (y = 0; y < 8; y += 2) { |
|
|
|
|
for (x = 0; x < 8; x += 2, flags >>= 2) { |
|
|
|
@ -755,9 +688,7 @@ static int ipvideo_decode_block_opcode_0x9_16(IpvideoContext *s) |
|
|
|
|
uint64_t flags; |
|
|
|
|
|
|
|
|
|
/* 1 of 4 colors for each 2x1 or 1x2 block */ |
|
|
|
|
CHECK_STREAM_PTR(s->stream_ptr, s->stream_end, 8); |
|
|
|
|
|
|
|
|
|
flags = bytestream_get_le64(&s->stream_ptr); |
|
|
|
|
flags = bytestream2_get_le64(&s->stream_ptr); |
|
|
|
|
if (!(P[2] & 0x8000)) { |
|
|
|
|
for (y = 0; y < 8; y++) { |
|
|
|
|
for (x = 0; x < 8; x += 2, flags >>= 2) { |
|
|
|
@ -784,25 +715,25 @@ static int ipvideo_decode_block_opcode_0x9_16(IpvideoContext *s) |
|
|
|
|
static int ipvideo_decode_block_opcode_0xA_16(IpvideoContext *s) |
|
|
|
|
{ |
|
|
|
|
int x, y; |
|
|
|
|
uint16_t P[4]; |
|
|
|
|
uint16_t P[8]; |
|
|
|
|
int flags = 0; |
|
|
|
|
uint16_t *pixel_ptr = (uint16_t*)s->pixel_ptr; |
|
|
|
|
|
|
|
|
|
for (x = 0; x < 4; x++) |
|
|
|
|
P[x] = bytestream2_get_le16(&s->stream_ptr); |
|
|
|
|
|
|
|
|
|
/* 4-color encoding for each 4x4 quadrant, or 4-color encoding on
|
|
|
|
|
* either top and bottom or left and right halves */ |
|
|
|
|
CHECK_STREAM_PTR(s->stream_ptr, s->stream_end, 24); |
|
|
|
|
|
|
|
|
|
if (!(AV_RL16(s->stream_ptr) & 0x8000)) { |
|
|
|
|
if (!(P[0] & 0x8000)) { |
|
|
|
|
|
|
|
|
|
/* 4-color encoding for each quadrant */ |
|
|
|
|
CHECK_STREAM_PTR(s->stream_ptr, s->stream_end, 48); |
|
|
|
|
|
|
|
|
|
for (y = 0; y < 16; y++) { |
|
|
|
|
// new values for each 4x4 block
|
|
|
|
|
if (!(y & 3)) { |
|
|
|
|
for (x = 0; x < 4; x++) |
|
|
|
|
P[x] = bytestream_get_le16(&s->stream_ptr); |
|
|
|
|
flags = bytestream_get_le32(&s->stream_ptr); |
|
|
|
|
if (y) |
|
|
|
|
for (x = 0; x < 4; x++) |
|
|
|
|
P[x] = bytestream2_get_le16(&s->stream_ptr); |
|
|
|
|
flags = bytestream2_get_le32(&s->stream_ptr); |
|
|
|
|
} |
|
|
|
|
|
|
|
|
|
for (x = 0; x < 4; x++, flags >>= 2) |
|
|
|
@ -815,20 +746,17 @@ static int ipvideo_decode_block_opcode_0xA_16(IpvideoContext *s) |
|
|
|
|
|
|
|
|
|
} else { |
|
|
|
|
// vertical split?
|
|
|
|
|
int vert = !(AV_RL16(s->stream_ptr + 16) & 0x8000); |
|
|
|
|
uint64_t flags = 0; |
|
|
|
|
int vert; |
|
|
|
|
uint64_t flags = bytestream2_get_le64(&s->stream_ptr); |
|
|
|
|
|
|
|
|
|
for (x = 4; x < 8; x++) |
|
|
|
|
P[x] = bytestream2_get_le16(&s->stream_ptr); |
|
|
|
|
vert = !(P[4] & 0x8000); |
|
|
|
|
|
|
|
|
|
/* 4-color encoding for either left and right or top and bottom
|
|
|
|
|
* halves */ |
|
|
|
|
|
|
|
|
|
for (y = 0; y < 16; y++) { |
|
|
|
|
// load values for each half
|
|
|
|
|
if (!(y & 7)) { |
|
|
|
|
for (x = 0; x < 4; x++) |
|
|
|
|
P[x] = bytestream_get_le16(&s->stream_ptr); |
|
|
|
|
flags = bytestream_get_le64(&s->stream_ptr); |
|
|
|
|
} |
|
|
|
|
|
|
|
|
|
for (x = 0; x < 4; x++, flags >>= 2) |
|
|
|
|
*pixel_ptr++ = P[flags & 0x03]; |
|
|
|
|
|
|
|
|
@ -837,6 +765,12 @@ static int ipvideo_decode_block_opcode_0xA_16(IpvideoContext *s) |
|
|
|
|
// switch to right half
|
|
|
|
|
if (y == 7) pixel_ptr -= 8 * s->stride - 4; |
|
|
|
|
} else if (y & 1) pixel_ptr += s->line_inc; |
|
|
|
|
|
|
|
|
|
// load values for second half
|
|
|
|
|
if (y == 7) { |
|
|
|
|
memcpy(P, P + 4, 8); |
|
|
|
|
flags = bytestream2_get_le64(&s->stream_ptr); |
|
|
|
|
} |
|
|
|
|
} |
|
|
|
|
} |
|
|
|
|
|
|
|
|
@ -850,11 +784,9 @@ static int ipvideo_decode_block_opcode_0xB_16(IpvideoContext *s) |
|
|
|
|
uint16_t *pixel_ptr = (uint16_t*)s->pixel_ptr; |
|
|
|
|
|
|
|
|
|
/* 64-color encoding (each pixel in block is a different color) */ |
|
|
|
|
CHECK_STREAM_PTR(s->stream_ptr, s->stream_end, 128); |
|
|
|
|
|
|
|
|
|
for (y = 0; y < 8; y++) { |
|
|
|
|
for (x = 0; x < 8; x++) |
|
|
|
|
pixel_ptr[x] = bytestream_get_le16(&s->stream_ptr); |
|
|
|
|
pixel_ptr[x] = bytestream2_get_le16(&s->stream_ptr); |
|
|
|
|
pixel_ptr += s->stride; |
|
|
|
|
} |
|
|
|
|
|
|
|
|
@ -868,14 +800,12 @@ static int ipvideo_decode_block_opcode_0xC_16(IpvideoContext *s) |
|
|
|
|
uint16_t *pixel_ptr = (uint16_t*)s->pixel_ptr; |
|
|
|
|
|
|
|
|
|
/* 16-color block encoding: each 2x2 block is a different color */ |
|
|
|
|
CHECK_STREAM_PTR(s->stream_ptr, s->stream_end, 32); |
|
|
|
|
|
|
|
|
|
for (y = 0; y < 8; y += 2) { |
|
|
|
|
for (x = 0; x < 8; x += 2) { |
|
|
|
|
pixel_ptr[x ] = |
|
|
|
|
pixel_ptr[x + 1 ] = |
|
|
|
|
pixel_ptr[x + s->stride] = |
|
|
|
|
pixel_ptr[x + 1 + s->stride] = bytestream_get_le16(&s->stream_ptr); |
|
|
|
|
pixel_ptr[x + 1 + s->stride] = bytestream2_get_le16(&s->stream_ptr); |
|
|
|
|
} |
|
|
|
|
pixel_ptr += s->stride * 2; |
|
|
|
|
} |
|
|
|
@ -891,12 +821,10 @@ static int ipvideo_decode_block_opcode_0xD_16(IpvideoContext *s) |
|
|
|
|
uint16_t *pixel_ptr = (uint16_t*)s->pixel_ptr; |
|
|
|
|
|
|
|
|
|
/* 4-color block encoding: each 4x4 block is a different color */ |
|
|
|
|
CHECK_STREAM_PTR(s->stream_ptr, s->stream_end, 8); |
|
|
|
|
|
|
|
|
|
for (y = 0; y < 8; y++) { |
|
|
|
|
if (!(y & 3)) { |
|
|
|
|
P[0] = bytestream_get_le16(&s->stream_ptr); |
|
|
|
|
P[1] = bytestream_get_le16(&s->stream_ptr); |
|
|
|
|
P[0] = bytestream2_get_le16(&s->stream_ptr); |
|
|
|
|
P[1] = bytestream2_get_le16(&s->stream_ptr); |
|
|
|
|
} |
|
|
|
|
for (x = 0; x < 8; x++) |
|
|
|
|
pixel_ptr[x] = P[x >> 2]; |
|
|
|
@ -914,8 +842,7 @@ static int ipvideo_decode_block_opcode_0xE_16(IpvideoContext *s) |
|
|
|
|
uint16_t *pixel_ptr = (uint16_t*)s->pixel_ptr; |
|
|
|
|
|
|
|
|
|
/* 1-color encoding: the whole block is 1 solid color */ |
|
|
|
|
CHECK_STREAM_PTR(s->stream_ptr, s->stream_end, 2); |
|
|
|
|
pix = bytestream_get_le16(&s->stream_ptr); |
|
|
|
|
pix = bytestream2_get_le16(&s->stream_ptr); |
|
|
|
|
|
|
|
|
|
for (y = 0; y < 8; y++) { |
|
|
|
|
for (x = 0; x < 8; x++) |
|
|
|
@ -960,19 +887,16 @@ static void ipvideo_decode_opcodes(IpvideoContext *s) |
|
|
|
|
av_dlog(s->avctx, "frame %d\n", frame); |
|
|
|
|
frame++; |
|
|
|
|
|
|
|
|
|
bytestream2_skip(&s->stream_ptr, 14); /* data starts 14 bytes in */ |
|
|
|
|
if (!s->is_16bpp) { |
|
|
|
|
/* this is PAL8, so make the palette available */ |
|
|
|
|
memcpy(s->current_frame.data[1], s->pal, AVPALETTE_SIZE); |
|
|
|
|
|
|
|
|
|
s->stride = s->current_frame.linesize[0]; |
|
|
|
|
s->stream_ptr = s->buf + 14; /* data starts 14 bytes in */ |
|
|
|
|
s->stream_end = s->buf + s->size; |
|
|
|
|
} else { |
|
|
|
|
s->stride = s->current_frame.linesize[0] >> 1; |
|
|
|
|
s->stream_ptr = s->buf + 16; |
|
|
|
|
s->stream_end = |
|
|
|
|
s->mv_ptr = s->buf + 14 + AV_RL16(s->buf+14); |
|
|
|
|
s->mv_end = s->buf + s->size; |
|
|
|
|
s->mv_ptr = s->stream_ptr; |
|
|
|
|
bytestream2_skip(&s->mv_ptr, bytestream2_get_le16(&s->stream_ptr)); |
|
|
|
|
} |
|
|
|
|
s->line_inc = s->stride - 8; |
|
|
|
|
s->upper_motion_limit_offset = (s->avctx->height - 8) * s->current_frame.linesize[0] |
|
|
|
@ -1002,9 +926,10 @@ static void ipvideo_decode_opcodes(IpvideoContext *s) |
|
|
|
|
} |
|
|
|
|
} |
|
|
|
|
} |
|
|
|
|
if (s->stream_end - s->stream_ptr > 1) { |
|
|
|
|
av_log(s->avctx, AV_LOG_ERROR, "decode finished with %td bytes left over\n", |
|
|
|
|
s->stream_end - s->stream_ptr); |
|
|
|
|
if (bytestream2_get_bytes_left(&s->stream_ptr) > 1) { |
|
|
|
|
av_log(s->avctx, AV_LOG_ERROR, |
|
|
|
|
"decode finished with %d bytes left over\n", |
|
|
|
|
bytestream2_get_bytes_left(&s->stream_ptr)); |
|
|
|
|
} |
|
|
|
|
} |
|
|
|
|
|
|
|
|
@ -1046,8 +971,8 @@ static int ipvideo_decode_frame(AVCodecContext *avctx, |
|
|
|
|
return buf_size; |
|
|
|
|
|
|
|
|
|
s->decoding_map = buf; |
|
|
|
|
s->buf = buf + s->decoding_map_size; |
|
|
|
|
s->size = buf_size - s->decoding_map_size; |
|
|
|
|
bytestream2_init(&s->stream_ptr, buf + s->decoding_map_size, |
|
|
|
|
buf_size - s->decoding_map_size); |
|
|
|
|
|
|
|
|
|
s->current_frame.reference = 3; |
|
|
|
|
if (avctx->get_buffer(avctx, &s->current_frame)) { |
|
|
|
|