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gstreamer/gst/mve/mvevideodec16.c
Edward Hervey ca6a88a8fc gst/: Use proper print statements. 
Original commit message from CVS:
* gst/multifile/gstmultifilesink.c:
(gst_multi_file_sink_class_init):
* gst/multifile/gstmultifilesrc.c: (gst_multi_file_src_class_init):
* gst/mve/gstmvedemux.c: (gst_mve_video_create_buffer),
(gst_mve_video_palette), (gst_mve_video_code_map),
(gst_mve_audio_init), (gst_mve_audio_data), (gst_mve_timer_create),
(gst_mve_demux_chain):
* gst/mve/gstmvemux.c: (gst_mve_mux_push_chunk):
* gst/mve/mveaudioenc.c: (mve_compress_audio):
* gst/mve/mvevideodec16.c: (ipvideo_copy_block):
* gst/mve/mvevideodec8.c: (ipvideo_copy_block):
* gst/mve/mvevideoenc16.c: (mve_encode_frame16):
* gst/mve/mvevideoenc8.c: (mve_encode_frame8):
Use proper print statements.
Fixes build on mac os x.
<wingo> oo look at me my name is edward i'm hacking on macos wooo
2007-01-25 12:05:11 +00:00

849 lines
20 KiB
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/*
* Interplay MVE Video Decoder (16 bit)
* Copyright (C) 2003 the ffmpeg project, Mike Melanson
* (C) 2006 Jens Granseuer
*
* This library 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 of the License, or (at your option) any later version.
*
* This library 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 this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
* For more information about the Interplay MVE format, visit:
* http://www.pcisys.net/~melanson/codecs/interplay-mve.txt
*/
#include "gstmvedemux.h"
#include <string.h>
#define PIXEL(s) GST_READ_UINT16_LE (s)
#define CHECK_STREAM(l, n) \
do { \
if (G_UNLIKELY (*(l) < (n))) { \
GST_ERROR ("wanted to read %d bytes from stream, %d available", (n), *(l)); \
return -1; \
} \
*(l) -= (n); \
} while (0)
/* copy an 8x8 block from the stream to the frame buffer */
static int
ipvideo_copy_block (const GstMveDemuxStream * s, unsigned short *frame,
const unsigned short *src, int offset)
{
int i;
int frame_offset;
frame_offset = frame - (unsigned short *) s->back_buf1 + offset;
if (G_UNLIKELY (frame_offset < 0)) {
GST_ERROR ("frame offset < 0 (%d)", frame_offset);
return -1;
} else if (G_UNLIKELY (frame_offset > s->max_block_offset)) {
GST_ERROR ("frame offset above limit (%d > %u)",
frame_offset, s->max_block_offset);
return -1;
}
for (i = 0; i < 8; ++i) {
memcpy (frame, src, 16);
frame += s->width;
src += s->width;
}
return 0;
}
static int
ipvideo_decode_0x2 (const GstMveDemuxStream * s, unsigned short *frame,
const unsigned char **data, unsigned short *len)
{
unsigned char B;
int x, y;
int offset;
/* copy block from 2 frames ago using a motion vector */
CHECK_STREAM (len, 1);
B = *(*data)++;
if (B < 56) {
x = 8 + (B % 7);
y = B / 7;
} else {
x = -14 + ((B - 56) % 29);
y = 8 + ((B - 56) / 29);
}
offset = y * s->width + x;
return ipvideo_copy_block (s, frame, frame + offset, offset);
}
static int
ipvideo_decode_0x3 (const GstMveDemuxStream * s, unsigned short *frame,
const unsigned char **data, unsigned short *len)
{
unsigned char B;
int x, y;
int offset;
/* copy 8x8 block from current frame from an up/left block */
CHECK_STREAM (len, 1);
B = *(*data)++;
if (B < 56) {
x = -(8 + (B % 7));
y = -(B / 7);
} else {
x = -(-14 + ((B - 56) % 29));
y = -(8 + ((B - 56) / 29));
}
offset = y * s->width + x;
return ipvideo_copy_block (s, frame, frame + offset, offset);
}
static int
ipvideo_decode_0x4 (const GstMveDemuxStream * s, unsigned short *frame,
const unsigned char **data, unsigned short *len)
{
int x, y;
unsigned char B;
int offset;
/* copy a block from the previous frame */
CHECK_STREAM (len, 1);
B = *(*data)++;
x = -8 + (B & 0x0F);
y = -8 + (B >> 4);
offset = y * s->width + x;
return ipvideo_copy_block (s, frame, frame +
((unsigned short *) s->back_buf2 - (unsigned short *) s->back_buf1) +
offset, offset);
}
static int
ipvideo_decode_0x5 (const GstMveDemuxStream * s, unsigned short *frame,
const unsigned char **data, unsigned short *len)
{
signed char x, y;
int offset;
/* copy a block from the previous frame using an expanded range */
CHECK_STREAM (len, 2);
x = (signed char) *(*data)++;
y = (signed char) *(*data)++;
offset = y * s->width + x;
return ipvideo_copy_block (s, frame, frame +
((unsigned short *) s->back_buf2 - (unsigned short *) s->back_buf1) +
offset, offset);
}
static int
ipvideo_decode_0x7 (const GstMveDemuxStream * s, unsigned short *frame,
const unsigned char **data, unsigned short *len)
{
int x, y;
unsigned short P0, P1;
unsigned int flags;
int bitmask;
/* 2-color encoding */
CHECK_STREAM (len, 4 + 2);
P0 = PIXEL (*data);
(*data) += 2;
P1 = PIXEL (*data);
(*data) += 2;
if (!(P0 & 0x8000)) {
/* need 8 more bytes from the stream */
CHECK_STREAM (len, 8 - 2);
for (y = 0; y < 8; ++y) {
flags = *(*data)++;
for (x = 0x01; x <= 0x80; x <<= 1) {
if (flags & x)
*frame++ = P1;
else
*frame++ = P0;
}
frame += s->width - 8;
}
} else {
P0 &= ~0x8000;
/* need 2 more bytes from the stream */
flags = ((*data)[1] << 8) | (*data)[0];
(*data) += 2;
bitmask = 0x0001;
for (y = 0; y < 8; y += 2) {
for (x = 0; x < 8; x += 2, bitmask <<= 1) {
if (flags & bitmask) {
*(frame + x) = P1;
*(frame + x + 1) = P1;
*(frame + s->width + x) = P1;
*(frame + s->width + x + 1) = P1;
} else {
*(frame + x) = P0;
*(frame + x + 1) = P0;
*(frame + s->width + x) = P0;
*(frame + s->width + x + 1) = P0;
}
}
frame += s->width * 2;
}
}
return 0;
}
static int
ipvideo_decode_0x8 (const GstMveDemuxStream * s, unsigned short *frame,
const unsigned char **data, unsigned short *len)
{
int x, y;
unsigned short P[8];
unsigned char B[8];
unsigned int flags = 0;
unsigned int bitmask = 0;
unsigned short P0 = 0, P1 = 0;
int lower_half = 0;
/* 2-color encoding for each 4x4 quadrant, or 2-color encoding on
* either top and bottom or left and right halves */
CHECK_STREAM (len, 6 + 10);
P[0] = PIXEL (*data);
(*data) += 2;
P[1] = PIXEL (*data);
(*data) += 2;
B[0] = *(*data)++;
B[1] = *(*data)++;
if (!(P[0] & 0x8000)) {
/* need 18 more bytes */
CHECK_STREAM (len, 18 - 10);
P[2] = PIXEL (*data);
(*data) += 2;
P[3] = PIXEL (*data);
(*data) += 2;
B[2] = *(*data)++;
B[3] = *(*data)++;
P[4] = PIXEL (*data);
(*data) += 2;
P[5] = PIXEL (*data);
(*data) += 2;
B[4] = *(*data)++;
B[5] = *(*data)++;
P[6] = PIXEL (*data);
(*data) += 2;
P[7] = PIXEL (*data);
(*data) += 2;
B[6] = *(*data)++;
B[7] = *(*data)++;
flags =
((B[0] & 0xF0) << 4) | ((B[4] & 0xF0) << 8) |
((B[0] & 0x0F)) | ((B[4] & 0x0F) << 4) |
((B[1] & 0xF0) << 20) | ((B[5] & 0xF0) << 24) |
((B[1] & 0x0F) << 16) | ((B[5] & 0x0F) << 20);
bitmask = 0x00000001;
lower_half = 0; /* still on top half */
for (y = 0; y < 8; ++y) {
/* time to reload flags? */
if (y == 4) {
flags =
((B[2] & 0xF0) << 4) | ((B[6] & 0xF0) << 8) |
((B[2] & 0x0F)) | ((B[6] & 0x0F) << 4) |
((B[3] & 0xF0) << 20) | ((B[7] & 0xF0) << 24) |
((B[3] & 0x0F) << 16) | ((B[7] & 0x0F) << 20);
bitmask = 0x00000001;
lower_half = 2;
}
/* get the pixel values ready for this quadrant */
P0 = P[lower_half + 0];
P1 = P[lower_half + 1];
for (x = 0; x < 8; ++x, bitmask <<= 1) {
if (x == 4) {
P0 = P[lower_half + 4];
P1 = P[lower_half + 5];
}
if (flags & bitmask)
*frame++ = P1;
else
*frame++ = P0;
}
frame += s->width - 8;
}
} else {
P[0] &= ~0x8000;
/* need 10 more bytes */
B[2] = *(*data)++;
B[3] = *(*data)++;
P[2] = PIXEL (*data);
(*data) += 2;
P[3] = PIXEL (*data);
(*data) += 2;
B[4] = *(*data)++;
B[5] = *(*data)++;
B[6] = *(*data)++;
B[7] = *(*data)++;
if (!(P[2] & 0x8000)) {
/* vertical split; left & right halves are 2-color encoded */
flags =
((B[0] & 0xF0) << 4) | ((B[4] & 0xF0) << 8) |
((B[0] & 0x0F)) | ((B[4] & 0x0F) << 4) |
((B[1] & 0xF0) << 20) | ((B[5] & 0xF0) << 24) |
((B[1] & 0x0F) << 16) | ((B[5] & 0x0F) << 20);
bitmask = 0x00000001;
for (y = 0; y < 8; ++y) {
/* time to reload flags? */
if (y == 4) {
flags =
((B[2] & 0xF0) << 4) | ((B[6] & 0xF0) << 8) |
((B[2] & 0x0F)) | ((B[6] & 0x0F) << 4) |
((B[3] & 0xF0) << 20) | ((B[7] & 0xF0) << 24) |
((B[3] & 0x0F) << 16) | ((B[7] & 0x0F) << 20);
bitmask = 0x00000001;
}
/* get the pixel values ready for this half */
P0 = P[0];
P1 = P[1];
for (x = 0; x < 8; ++x, bitmask <<= 1) {
if (x == 4) {
P0 = P[2];
P1 = P[3];
}
if (flags & bitmask)
*frame++ = P1;
else
*frame++ = P0;
}
frame += s->width - 8;
}
} else {
/* horizontal split; top & bottom halves are 2-color encoded */
P0 = P[0];
P1 = P[1];
for (y = 0; y < 8; ++y) {
flags = B[y];
if (y == 4) {
P0 = P[2] & ~0x8000;
P1 = P[3];
}
for (bitmask = 0x01; bitmask <= 0x80; bitmask <<= 1) {
if (flags & bitmask)
*frame++ = P1;
else
*frame++ = P0;
}
frame += s->width - 8;
}
}
}
return 0;
}
static int
ipvideo_decode_0x9 (const GstMveDemuxStream * s, unsigned short *frame,
const unsigned char **data, unsigned short *len)
{
int x, y;
unsigned short P[4];
unsigned char B[4];
unsigned int flags = 0;
int shifter = 0;
unsigned short pix;
/* 4-color encoding */
CHECK_STREAM (len, 8 + 4);
P[0] = PIXEL (*data);
(*data) += 2;
P[1] = PIXEL (*data);
(*data) += 2;
P[2] = PIXEL (*data);
(*data) += 2;
P[3] = PIXEL (*data);
(*data) += 2;
if (!(P[0] & 0x8000) && !(P[2] & 0x8000)) {
/* 1 of 4 colors for each pixel, need 16 more bytes */
CHECK_STREAM (len, 16 - 4);
for (y = 0; y < 8; ++y) {
/* get the next set of 8 2-bit flags */
flags = ((*data)[1] << 8) | (*data)[0];
(*data) += 2;
for (x = 0, shifter = 0; x < 8; ++x, shifter += 2) {
*frame++ = P[(flags >> shifter) & 0x03];
}
frame += s->width - 8;
}
} else if (!(P[0] & 0x8000) && (P[2] & 0x8000)) {
P[2] &= ~0x8000;
/* 1 of 4 colors for each 2x2 block, need 4 more bytes */
B[0] = *(*data)++;
B[1] = *(*data)++;
B[2] = *(*data)++;
B[3] = *(*data)++;
flags = (B[3] << 24) | (B[2] << 16) | (B[1] << 8) | B[0];
shifter = 0;
for (y = 0; y < 8; y += 2) {
for (x = 0; x < 8; x += 2, shifter += 2) {
pix = P[(flags >> shifter) & 0x03];
*(frame + x) = pix;
*(frame + x + 1) = pix;
*(frame + s->width + x) = pix;
*(frame + s->width + x + 1) = pix;
}
frame += s->width * 2;
}
} else if ((P[0] & 0x8000) && !(P[2] & 0x8000)) {
P[0] &= ~0x8000;
/* 1 of 4 colors for each 2x1 block, need 8 more bytes */
CHECK_STREAM (len, 8 - 4);
for (y = 0; y < 8; ++y) {
/* time to reload flags? */
if ((y == 0) || (y == 4)) {
B[0] = *(*data)++;
B[1] = *(*data)++;
B[2] = *(*data)++;
B[3] = *(*data)++;
flags = (B[3] << 24) | (B[2] << 16) | (B[1] << 8) | B[0];
shifter = 0;
}
for (x = 0; x < 8; x += 2, shifter += 2) {
pix = P[(flags >> shifter) & 0x03];
*(frame + x) = pix;
*(frame + x + 1) = pix;
}
frame += s->width;
}
} else {
P[0] &= ~0x8000;
P[2] &= ~0x8000;
/* 1 of 4 colors for each 1x2 block, need 8 more bytes */
CHECK_STREAM (len, 8 - 4);
for (y = 0; y < 8; y += 2) {
/* time to reload flags? */
if ((y == 0) || (y == 4)) {
B[0] = *(*data)++;
B[1] = *(*data)++;
B[2] = *(*data)++;
B[3] = *(*data)++;
flags = (B[3] << 24) | (B[2] << 16) | (B[1] << 8) | B[0];
shifter = 0;
}
for (x = 0; x < 8; ++x, shifter += 2) {
pix = P[(flags >> shifter) & 0x03];
*(frame + x) = pix;
*(frame + s->width + x) = pix;
}
frame += s->width * 2;
}
}
return 0;
}
static int
ipvideo_decode_0xa (const GstMveDemuxStream * s, unsigned short *frame,
const unsigned char **data, unsigned short *len)
{
int x, y;
unsigned short P[16];
unsigned char B[16];
int flags = 0;
int shifter = 0;
int index;
int split;
int lower_half;
/* 4-color encoding for each 4x4 quadrant, or 4-color encoding on
* either top and bottom or left and right halves */
CHECK_STREAM (len, 8 + 24);
P[0] = PIXEL (*data);
(*data) += 2;
P[1] = PIXEL (*data);
(*data) += 2;
P[2] = PIXEL (*data);
(*data) += 2;
P[3] = PIXEL (*data);
(*data) += 2;
if (!(P[0] & 0x8000)) {
/* 4-color encoding for each quadrant; need 40 more bytes */
CHECK_STREAM (len, 40 - 24);
B[0] = *(*data)++;
B[1] = *(*data)++;
B[2] = *(*data)++;
B[3] = *(*data)++;
for (y = 4; y < 16; y += 4) {
for (x = y; x < y + 4; ++x) {
P[x] = PIXEL (*data);
(*data) += 2;
}
for (x = y; x < y + 4; ++x)
B[x] = *(*data)++;
}
for (y = 0; y < 8; ++y) {
lower_half = (y >= 4) ? 4 : 0;
flags = (B[y + 8] << 8) | B[y];
for (x = 0, shifter = 0; x < 8; ++x, shifter += 2) {
split = (x >= 4) ? 8 : 0;
index = split + lower_half + ((flags >> shifter) & 0x03);
*frame++ = P[index];
}
frame += s->width - 8;
}
} else {
P[0] &= ~0x8000;
/* 4-color encoding for either left and right or top and bottom
* halves; need 24 more bytes */
memcpy (&B[0], *data, 8);
(*data) += 8;
P[4] = PIXEL (*data);
(*data) += 2;
P[5] = PIXEL (*data);
(*data) += 2;
P[6] = PIXEL (*data);
(*data) += 2;
P[7] = PIXEL (*data);
(*data) += 2;
memcpy (&B[8], *data, 8);
(*data) += 8;
if (!(P[4] & 0x8000)) {
/* block is divided into left and right halves */
for (y = 0; y < 8; ++y) {
flags = (B[y + 8] << 8) | B[y];
split = 0;
for (x = 0, shifter = 0; x < 8; ++x, shifter += 2) {
if (x == 4)
split = 4;
*frame++ = P[split + ((flags >> shifter) & 0x03)];
}
frame += s->width - 8;
}
} else {
P[4] &= ~0x8000;
/* block is divided into top and bottom halves */
split = 0;
for (y = 0; y < 8; ++y) {
flags = (B[y * 2 + 1] << 8) | B[y * 2];
if (y == 4)
split = 4;
for (x = 0, shifter = 0; x < 8; ++x, shifter += 2)
*frame++ = P[split + ((flags >> shifter) & 0x03)];
frame += s->width - 8;
}
}
}
return 0;
}
static int
ipvideo_decode_0xb (const GstMveDemuxStream * s, unsigned short *frame,
const unsigned char **data, unsigned short *len)
{
int x, y;
/* 64-color encoding (each pixel in block is a different color) */
CHECK_STREAM (len, 128);
for (y = 0; y < 8; ++y) {
for (x = 0; x < 8; ++x) {
*frame++ = PIXEL (*data);
(*data) += 2;
}
frame += s->width - 8;
}
return 0;
}
static int
ipvideo_decode_0xc (const GstMveDemuxStream * s, unsigned short *frame,
const unsigned char **data, unsigned short *len)
{
int x, y;
unsigned short pix;
/* 16-color block encoding: each 2x2 block is a different color */
CHECK_STREAM (len, 32);
for (y = 0; y < 8; y += 2) {
for (x = 0; x < 8; x += 2) {
pix = PIXEL (*data);
(*data) += 2;
*(frame + x) = pix;
*(frame + x + 1) = pix;
*(frame + s->width + x) = pix;
*(frame + s->width + x + 1) = pix;
}
frame += s->width * 2;
}
return 0;
}
static int
ipvideo_decode_0xd (const GstMveDemuxStream * s, unsigned short *frame,
const unsigned char **data, unsigned short *len)
{
int x, y;
unsigned short P[4];
unsigned char index = 0;
/* 4-color block encoding: each 4x4 block is a different color */
CHECK_STREAM (len, 8);
P[0] = PIXEL (*data);
(*data) += 2;
P[1] = PIXEL (*data);
(*data) += 2;
P[2] = PIXEL (*data);
(*data) += 2;
P[3] = PIXEL (*data);
(*data) += 2;
for (y = 0; y < 8; ++y) {
if (y < 4)
index = 0;
else
index = 2;
for (x = 0; x < 8; ++x) {
if (x == 4)
++index;
*frame++ = P[index];
}
frame += s->width - 8;
}
return 0;
}
static int
ipvideo_decode_0xe (const GstMveDemuxStream * s, unsigned short *frame,
const unsigned char **data, unsigned short *len)
{
int x, y;
unsigned short pix;
/* 1-color encoding: the whole block is 1 solid color */
CHECK_STREAM (len, 2);
pix = PIXEL (*data);
(*data) += 2;
for (y = 0; y < 8; ++y) {
for (x = 0; x < 8; ++x) {
*frame++ = pix;
}
frame += s->width - 8;
}
return 0;
}
static int
ipvideo_decode_0xf (const GstMveDemuxStream * s, unsigned short *frame,
const unsigned char **data, unsigned short *len)
{
int x, y;
unsigned short P[2];
/* dithered encoding */
CHECK_STREAM (len, 4);
P[0] = PIXEL (*data);
(*data) += 2;
P[1] = PIXEL (*data);
(*data) += 2;
for (y = 0; y < 8; ++y) {
for (x = 0; x < 4; ++x) {
*frame++ = P[y & 1];
*frame++ = P[(y & 1) ^ 1];
}
frame += s->width - 8;
}
return 0;
}
int
ipvideo_decode_frame16 (const GstMveDemuxStream * s, const unsigned char *data,
unsigned short len)
{
int rc = 0;
int x, y, xx, yy;
int index = 0;
unsigned short offset;
unsigned char opcode;
unsigned short *frame;
const unsigned char *data2;
unsigned short len2;
CHECK_STREAM (&len, 2);
offset = (data[1] << 8) | data[0];
data2 = data + offset;
len2 = len - offset + 2;
data += 2;
frame = (unsigned short *) s->back_buf1;
/* decoding is done in 8x8 blocks */
xx = s->width >> 3;
yy = s->height >> 3;
for (y = 0; y < yy; ++y) {
for (x = 0; x < xx; ++x) {
/* decoding map contains 4 bits of information per 8x8 block */
/* bottom nibble first, then top nibble */
if (index & 1)
opcode = s->code_map[index >> 1] >> 4;
else
opcode = s->code_map[index >> 1] & 0x0F;
++index;
/* GST_DEBUG ("block @ (%3d, %3d): encoding 0x%X, data ptr @ %p",
x, y, opcode, data); */
switch (opcode) {
case 0x0:
/* copy a block from the previous frame */
rc = ipvideo_copy_block (s, frame, frame +
((unsigned short *) s->back_buf2 -
(unsigned short *) s->back_buf1), 0);
break;
case 0x1:
/* copy block from 2 frames ago; since we switched the back
* buffers we don't actually have to do anything here */
break;
case 0x2:
rc = ipvideo_decode_0x2 (s, frame, &data2, &len2);
break;
case 0x3:
rc = ipvideo_decode_0x3 (s, frame, &data2, &len2);
break;
case 0x4:
rc = ipvideo_decode_0x4 (s, frame, &data2, &len2);
break;
case 0x5:
rc = ipvideo_decode_0x5 (s, frame, &data, &len);
break;
case 0x6:
/* mystery opcode? skip multiple blocks? */
GST_WARNING ("encountered unsupported opcode 0x6");
rc = -1;
break;
case 0x7:
rc = ipvideo_decode_0x7 (s, frame, &data, &len);
break;
case 0x8:
rc = ipvideo_decode_0x8 (s, frame, &data, &len);
break;
case 0x9:
rc = ipvideo_decode_0x9 (s, frame, &data, &len);
break;
case 0xa:
rc = ipvideo_decode_0xa (s, frame, &data, &len);
break;
case 0xb:
rc = ipvideo_decode_0xb (s, frame, &data, &len);
break;
case 0xc:
rc = ipvideo_decode_0xc (s, frame, &data, &len);
break;
case 0xd:
rc = ipvideo_decode_0xd (s, frame, &data, &len);
break;
case 0xe:
rc = ipvideo_decode_0xe (s, frame, &data, &len);
break;
case 0xf:
rc = ipvideo_decode_0xf (s, frame, &data, &len);
break;
}
if (rc != 0)
return rc;
frame += 8;
}
frame += 7 * s->width;
}
return 0;
}
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