2007-05-29 18:01:33 +03:00
|
|
|
/*
|
|
|
|
* Copyright (C) 2003 the ffmpeg project
|
|
|
|
*
|
|
|
|
* 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
|
|
|
|
*/
|
|
|
|
|
|
|
|
/**
|
2010-04-20 17:45:34 +03:00
|
|
|
* @file
|
2008-06-13 12:30:42 +03:00
|
|
|
* id RoQ Video Decoder by Dr. Tim Ferguson
|
|
|
|
* For more information about the id RoQ format, visit:
|
2007-05-29 18:01:33 +03:00
|
|
|
* http://www.csse.monash.edu.au/~timf/
|
|
|
|
*/
|
|
|
|
|
|
|
|
#include "avcodec.h"
|
|
|
|
#include "bytestream.h"
|
|
|
|
#include "roqvideo.h"
|
|
|
|
|
|
|
|
static void roqvideo_decode_frame(RoqContext *ri)
|
|
|
|
{
|
|
|
|
unsigned int chunk_id = 0, chunk_arg = 0;
|
|
|
|
unsigned long chunk_size = 0;
|
|
|
|
int i, j, k, nv1, nv2, vqflg = 0, vqflg_pos = -1;
|
2012-03-07 02:58:35 +03:00
|
|
|
int vqid, xpos, ypos, xp, yp, x, y, mx, my;
|
2007-05-29 18:01:33 +03:00
|
|
|
int frame_stats[2][4] = {{0},{0}};
|
|
|
|
roq_qcell *qcell;
|
2012-03-07 02:58:35 +03:00
|
|
|
int64_t chunk_start;
|
2007-05-29 18:01:33 +03:00
|
|
|
|
2012-03-08 04:28:40 +03:00
|
|
|
while (bytestream2_get_bytes_left(&ri->gb) >= 8) {
|
2012-03-07 21:59:45 +03:00
|
|
|
chunk_id = bytestream2_get_le16(&ri->gb);
|
2012-03-07 02:58:35 +03:00
|
|
|
chunk_size = bytestream2_get_le32(&ri->gb);
|
2012-03-07 21:59:45 +03:00
|
|
|
chunk_arg = bytestream2_get_le16(&ri->gb);
|
2007-05-29 18:01:33 +03:00
|
|
|
|
|
|
|
if(chunk_id == RoQ_QUAD_VQ)
|
|
|
|
break;
|
|
|
|
if(chunk_id == RoQ_QUAD_CODEBOOK) {
|
|
|
|
if((nv1 = chunk_arg >> 8) == 0)
|
|
|
|
nv1 = 256;
|
|
|
|
if((nv2 = chunk_arg & 0xff) == 0 && nv1 * 6 < chunk_size)
|
|
|
|
nv2 = 256;
|
|
|
|
for(i = 0; i < nv1; i++) {
|
2012-03-07 02:58:35 +03:00
|
|
|
ri->cb2x2[i].y[0] = bytestream2_get_byte(&ri->gb);
|
|
|
|
ri->cb2x2[i].y[1] = bytestream2_get_byte(&ri->gb);
|
|
|
|
ri->cb2x2[i].y[2] = bytestream2_get_byte(&ri->gb);
|
|
|
|
ri->cb2x2[i].y[3] = bytestream2_get_byte(&ri->gb);
|
2012-03-07 21:59:45 +03:00
|
|
|
ri->cb2x2[i].u = bytestream2_get_byte(&ri->gb);
|
|
|
|
ri->cb2x2[i].v = bytestream2_get_byte(&ri->gb);
|
2007-05-29 18:01:33 +03:00
|
|
|
}
|
|
|
|
for(i = 0; i < nv2; i++)
|
|
|
|
for(j = 0; j < 4; j++)
|
2012-03-07 02:58:35 +03:00
|
|
|
ri->cb4x4[i].idx[j] = bytestream2_get_byte(&ri->gb);
|
2007-05-29 18:01:33 +03:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2012-03-07 02:58:35 +03:00
|
|
|
chunk_start = bytestream2_tell(&ri->gb);
|
|
|
|
xpos = ypos = 0;
|
2012-03-08 04:28:40 +03:00
|
|
|
|
|
|
|
if (chunk_size > bytestream2_get_bytes_left(&ri->gb)) {
|
2011-08-20 14:13:01 +03:00
|
|
|
av_log(ri->avctx, AV_LOG_ERROR, "Chunk does not fit in input buffer\n");
|
2012-03-08 04:28:40 +03:00
|
|
|
chunk_size = bytestream2_get_bytes_left(&ri->gb);
|
2011-08-20 14:13:01 +03:00
|
|
|
}
|
2012-03-08 04:28:40 +03:00
|
|
|
|
2012-03-07 02:58:35 +03:00
|
|
|
while (bytestream2_tell(&ri->gb) < chunk_start + chunk_size) {
|
2007-05-29 18:01:33 +03:00
|
|
|
for (yp = ypos; yp < ypos + 16; yp += 8)
|
|
|
|
for (xp = xpos; xp < xpos + 16; xp += 8) {
|
2012-03-08 04:28:40 +03:00
|
|
|
if (bytestream2_tell(&ri->gb) >= chunk_start + chunk_size) {
|
2011-08-20 14:13:01 +03:00
|
|
|
av_log(ri->avctx, AV_LOG_ERROR, "Input buffer too small\n");
|
|
|
|
return;
|
|
|
|
}
|
2007-05-29 18:01:33 +03:00
|
|
|
if (vqflg_pos < 0) {
|
2012-03-07 02:58:35 +03:00
|
|
|
vqflg = bytestream2_get_le16(&ri->gb);
|
2007-05-29 18:01:33 +03:00
|
|
|
vqflg_pos = 7;
|
|
|
|
}
|
|
|
|
vqid = (vqflg >> (vqflg_pos * 2)) & 0x3;
|
|
|
|
frame_stats[0][vqid]++;
|
|
|
|
vqflg_pos--;
|
|
|
|
|
|
|
|
switch(vqid) {
|
|
|
|
case RoQ_ID_MOT:
|
|
|
|
break;
|
2012-03-07 02:58:35 +03:00
|
|
|
case RoQ_ID_FCC: {
|
|
|
|
int byte = bytestream2_get_byte(&ri->gb);
|
|
|
|
mx = 8 - (byte >> 4) - ((signed char) (chunk_arg >> 8));
|
|
|
|
my = 8 - (byte & 0xf) - ((signed char) chunk_arg);
|
2007-05-29 18:01:33 +03:00
|
|
|
ff_apply_motion_8x8(ri, xp, yp, mx, my);
|
|
|
|
break;
|
2012-03-07 02:58:35 +03:00
|
|
|
}
|
2007-05-29 18:01:33 +03:00
|
|
|
case RoQ_ID_SLD:
|
2012-03-07 02:58:35 +03:00
|
|
|
qcell = ri->cb4x4 + bytestream2_get_byte(&ri->gb);
|
2012-03-07 21:59:45 +03:00
|
|
|
ff_apply_vector_4x4(ri, xp, yp, ri->cb2x2 + qcell->idx[0]);
|
|
|
|
ff_apply_vector_4x4(ri, xp + 4, yp, ri->cb2x2 + qcell->idx[1]);
|
|
|
|
ff_apply_vector_4x4(ri, xp, yp + 4, ri->cb2x2 + qcell->idx[2]);
|
|
|
|
ff_apply_vector_4x4(ri, xp + 4, yp + 4, ri->cb2x2 + qcell->idx[3]);
|
2007-05-29 18:01:33 +03:00
|
|
|
break;
|
|
|
|
case RoQ_ID_CCC:
|
|
|
|
for (k = 0; k < 4; k++) {
|
|
|
|
x = xp; y = yp;
|
|
|
|
if(k & 0x01) x += 4;
|
|
|
|
if(k & 0x02) y += 4;
|
|
|
|
|
2012-03-08 04:28:40 +03:00
|
|
|
if (bytestream2_tell(&ri->gb) >= chunk_start + chunk_size) {
|
2011-08-20 14:13:01 +03:00
|
|
|
av_log(ri->avctx, AV_LOG_ERROR, "Input buffer too small\n");
|
|
|
|
return;
|
|
|
|
}
|
2007-05-29 18:01:33 +03:00
|
|
|
if (vqflg_pos < 0) {
|
2012-03-07 02:58:35 +03:00
|
|
|
vqflg = bytestream2_get_le16(&ri->gb);
|
2007-05-29 18:01:33 +03:00
|
|
|
vqflg_pos = 7;
|
|
|
|
}
|
|
|
|
vqid = (vqflg >> (vqflg_pos * 2)) & 0x3;
|
|
|
|
frame_stats[1][vqid]++;
|
|
|
|
vqflg_pos--;
|
|
|
|
switch(vqid) {
|
|
|
|
case RoQ_ID_MOT:
|
|
|
|
break;
|
2012-03-07 02:58:35 +03:00
|
|
|
case RoQ_ID_FCC: {
|
|
|
|
int byte = bytestream2_get_byte(&ri->gb);
|
|
|
|
mx = 8 - (byte >> 4) - ((signed char) (chunk_arg >> 8));
|
|
|
|
my = 8 - (byte & 0xf) - ((signed char) chunk_arg);
|
2007-05-29 18:01:33 +03:00
|
|
|
ff_apply_motion_4x4(ri, x, y, mx, my);
|
|
|
|
break;
|
2012-03-07 02:58:35 +03:00
|
|
|
}
|
2007-05-29 18:01:33 +03:00
|
|
|
case RoQ_ID_SLD:
|
2012-03-07 02:58:35 +03:00
|
|
|
qcell = ri->cb4x4 + bytestream2_get_byte(&ri->gb);
|
2012-03-07 21:59:45 +03:00
|
|
|
ff_apply_vector_2x2(ri, x, y, ri->cb2x2 + qcell->idx[0]);
|
|
|
|
ff_apply_vector_2x2(ri, x + 2, y, ri->cb2x2 + qcell->idx[1]);
|
|
|
|
ff_apply_vector_2x2(ri, x, y + 2, ri->cb2x2 + qcell->idx[2]);
|
|
|
|
ff_apply_vector_2x2(ri, x + 2, y + 2, ri->cb2x2 + qcell->idx[3]);
|
2007-05-29 18:01:33 +03:00
|
|
|
break;
|
|
|
|
case RoQ_ID_CCC:
|
2012-03-07 21:59:45 +03:00
|
|
|
ff_apply_vector_2x2(ri, x, y, ri->cb2x2 + bytestream2_get_byte(&ri->gb));
|
|
|
|
ff_apply_vector_2x2(ri, x + 2, y, ri->cb2x2 + bytestream2_get_byte(&ri->gb));
|
|
|
|
ff_apply_vector_2x2(ri, x, y + 2, ri->cb2x2 + bytestream2_get_byte(&ri->gb));
|
|
|
|
ff_apply_vector_2x2(ri, x + 2, y + 2, ri->cb2x2 + bytestream2_get_byte(&ri->gb));
|
2007-05-29 18:01:33 +03:00
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
av_log(ri->avctx, AV_LOG_ERROR, "Unknown vq code: %d\n", vqid);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
xpos += 16;
|
2007-06-26 23:10:26 +03:00
|
|
|
if (xpos >= ri->width) {
|
|
|
|
xpos -= ri->width;
|
2007-05-29 18:01:33 +03:00
|
|
|
ypos += 16;
|
|
|
|
}
|
2007-06-26 23:10:26 +03:00
|
|
|
if(ypos >= ri->height)
|
2007-05-29 18:01:33 +03:00
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
|
2008-03-21 05:11:20 +02:00
|
|
|
static av_cold int roq_decode_init(AVCodecContext *avctx)
|
2007-05-29 18:01:33 +03:00
|
|
|
{
|
|
|
|
RoqContext *s = avctx->priv_data;
|
|
|
|
|
|
|
|
s->avctx = avctx;
|
2007-06-26 23:10:26 +03:00
|
|
|
s->width = avctx->width;
|
|
|
|
s->height = avctx->height;
|
2011-05-02 03:15:15 +03:00
|
|
|
avcodec_get_frame_defaults(&s->frames[0]);
|
|
|
|
avcodec_get_frame_defaults(&s->frames[1]);
|
2007-05-29 18:01:33 +03:00
|
|
|
s->last_frame = &s->frames[0];
|
|
|
|
s->current_frame = &s->frames[1];
|
2007-06-05 11:05:16 +03:00
|
|
|
avctx->pix_fmt = PIX_FMT_YUV444P;
|
2007-05-29 18:01:33 +03:00
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int roq_decode_frame(AVCodecContext *avctx,
|
|
|
|
void *data, int *data_size,
|
2009-04-07 18:59:50 +03:00
|
|
|
AVPacket *avpkt)
|
2007-05-29 18:01:33 +03:00
|
|
|
{
|
2009-04-07 18:59:50 +03:00
|
|
|
const uint8_t *buf = avpkt->data;
|
|
|
|
int buf_size = avpkt->size;
|
2007-05-29 18:01:33 +03:00
|
|
|
RoqContext *s = avctx->priv_data;
|
2007-08-12 02:09:28 +03:00
|
|
|
int copy= !s->current_frame->data[0];
|
2012-09-09 12:11:43 +03:00
|
|
|
int ret;
|
2007-05-29 18:01:33 +03:00
|
|
|
|
2011-11-06 01:27:00 +03:00
|
|
|
s->current_frame->reference = 3;
|
2012-09-09 12:11:43 +03:00
|
|
|
if ((ret = avctx->reget_buffer(avctx, s->current_frame)) < 0) {
|
2012-09-09 12:12:14 +03:00
|
|
|
av_log(avctx, AV_LOG_ERROR, "reget_buffer() failed\n");
|
2012-09-09 12:11:43 +03:00
|
|
|
return ret;
|
2007-05-29 18:01:33 +03:00
|
|
|
}
|
|
|
|
|
2007-08-12 02:09:28 +03:00
|
|
|
if(copy)
|
|
|
|
av_picture_copy((AVPicture*)s->current_frame, (AVPicture*)s->last_frame,
|
|
|
|
avctx->pix_fmt, avctx->width, avctx->height);
|
|
|
|
|
2012-03-07 02:58:35 +03:00
|
|
|
bytestream2_init(&s->gb, buf, buf_size);
|
2007-05-29 18:01:33 +03:00
|
|
|
roqvideo_decode_frame(s);
|
|
|
|
|
|
|
|
*data_size = sizeof(AVFrame);
|
|
|
|
*(AVFrame*)data = *s->current_frame;
|
|
|
|
|
|
|
|
/* shuffle frames */
|
|
|
|
FFSWAP(AVFrame *, s->current_frame, s->last_frame);
|
|
|
|
|
|
|
|
return buf_size;
|
|
|
|
}
|
|
|
|
|
2008-03-21 05:11:20 +02:00
|
|
|
static av_cold int roq_decode_end(AVCodecContext *avctx)
|
2007-05-29 18:01:33 +03:00
|
|
|
{
|
|
|
|
RoqContext *s = avctx->priv_data;
|
|
|
|
|
|
|
|
/* release the last frame */
|
|
|
|
if (s->last_frame->data[0])
|
|
|
|
avctx->release_buffer(avctx, s->last_frame);
|
2007-06-02 00:17:05 +03:00
|
|
|
if (s->current_frame->data[0])
|
|
|
|
avctx->release_buffer(avctx, s->current_frame);
|
2007-05-29 18:01:33 +03:00
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2011-01-25 23:40:11 +02:00
|
|
|
AVCodec ff_roq_decoder = {
|
2011-07-17 13:54:31 +03:00
|
|
|
.name = "roqvideo",
|
|
|
|
.type = AVMEDIA_TYPE_VIDEO,
|
2012-08-05 12:11:04 +03:00
|
|
|
.id = AV_CODEC_ID_ROQ,
|
2011-07-17 13:54:31 +03:00
|
|
|
.priv_data_size = sizeof(RoqContext),
|
|
|
|
.init = roq_decode_init,
|
|
|
|
.close = roq_decode_end,
|
|
|
|
.decode = roq_decode_frame,
|
|
|
|
.capabilities = CODEC_CAP_DR1,
|
2012-04-06 19:19:39 +03:00
|
|
|
.long_name = NULL_IF_CONFIG_SMALL("id RoQ video"),
|
2007-05-29 18:01:33 +03:00
|
|
|
};
|