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initial commit for Id RoQ and Interplay MVE multimedia subsystems

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Originally committed as revision 2195 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Mike Melanson 2003-09-02 04:32:02 +00:00
parent 149f7c029c
commit 3ef8be2bfc
11 changed files with 1693 additions and 2 deletions
Download patch file Download diff file Expand all files Collapse all files

3
libavcodec/Makefile
View file

@ -17,7 +17,8 @@ OBJS= common.o utils.o mem.o allcodecs.o \
mpeg12.o mpegaudiodec.o pcm.o simple_idct.o \
ratecontrol.o adpcm.o eval.o dv.o error_resilience.o \
fft.o mdct.o mace.o huffyuv.o cyuv.o opts.o raw.o h264.o golomb.o \
vp3.o asv1.o 4xm.o cabac.o ffv1.o ra144.o ra288.o vcr1.o cljr.o
vp3.o asv1.o 4xm.o cabac.o ffv1.o ra144.o ra288.o vcr1.o cljr.o \
roqvideo.o dpcm.o interplayvideo.o
ifeq ($(AMR_NB),yes)
ifeq ($(AMR_NB_FIXED),yes)

4
libavcodec/allcodecs.c
View file

@ -121,11 +121,15 @@ void avcodec_register_all(void)
register_avcodec(&cljr_decoder);
register_avcodec(&fourxm_decoder);
register_avcodec(&mdec_decoder);
register_avcodec(&roq_decoder);
register_avcodec(&interplay_video_decoder);
#ifdef CONFIG_AC3
register_avcodec(&ac3_decoder);
#endif
register_avcodec(&ra_144_decoder);
register_avcodec(&ra_288_decoder);
register_avcodec(&roq_dpcm_decoder);
register_avcodec(&interplay_dpcm_decoder);
#endif /* CONFIG_DECODERS */
#ifdef AMR_NB

10
libavcodec/avcodec.h
View file

@ -66,6 +66,8 @@ enum CodecID {
CODEC_ID_VCR1,
CODEC_ID_CLJR,
CODEC_ID_MDEC,
CODEC_ID_ROQ,
CODEC_ID_INTERPLAY_VIDEO,
/* various pcm "codecs" */
CODEC_ID_PCM_S16LE,
@ -88,6 +90,10 @@ enum CodecID {
/* RealAudio codecs*/
CODEC_ID_RA_144,
CODEC_ID_RA_288,
/* various DPCM codecs */
CODEC_ID_ROQ_DPCM,
CODEC_ID_INTERPLAY_DPCM,
};
enum CodecType {
@ -1347,8 +1353,12 @@ extern AVCodec cljr_decoder;
extern AVCodec ffv1_decoder;
extern AVCodec fourxm_decoder;
extern AVCodec mdec_decoder;
extern AVCodec roq_decoder;
extern AVCodec interplay_video_decoder;
extern AVCodec ra_144_decoder;
extern AVCodec ra_288_decoder;
extern AVCodec roq_dpcm_decoder;
extern AVCodec interplay_dpcm_decoder;
/* pcm codecs */
#define PCM_CODEC(id, name) \

200
libavcodec/dpcm.c Normal file
View file

@ -0,0 +1,200 @@
/*
* Assorted DPCM codecs
* Copyright (c) 2003 The ffmpeg Project.
*
* 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
/**
* @file: dpcm.c
* Assorted DPCM (differential pulse code modulation) audio codecs
* by Mike Melanson (melanson@pcisys.net)
* for more information on the specific data formats, visit:
* http://www.pcisys.net/~melanson/codecs/simpleaudio.html
*/
#include "avcodec.h"
typedef struct DPCMContext {
int channels;
short roq_square_array[256];
int last_delta[2];
} DPCMContext;
#define SATURATE_S16(x) if (x < -32768) x = -32768; \
else if (x > 32767) x = 32767;
#define SE_16BIT(x) if (x & 0x8000) x -= 0x10000;
#define LE_16(x) ((((uint8_t*)(x))[1] << 8) | ((uint8_t*)(x))[0])
#define LE_32(x) ((((uint8_t*)(x))[3] << 24) | \
(((uint8_t*)(x))[2] << 16) | \
(((uint8_t*)(x))[1] << 8) | \
((uint8_t*)(x))[0])
static int interplay_delta_table[] = {
0, 1, 2, 3, 4, 5, 6, 7,
8, 9, 10, 11, 12, 13, 14, 15,
16, 17, 18, 19, 20, 21, 22, 23,
24, 25, 26, 27, 28, 29, 30, 31,
32, 33, 34, 35, 36, 37, 38, 39,
40, 41, 42, 43, 47, 51, 56, 61,
66, 72, 79, 86, 94, 102, 112, 122,
133, 145, 158, 173, 189, 206, 225, 245,
267, 292, 318, 348, 379, 414, 452, 493,
538, 587, 640, 699, 763, 832, 908, 991,
1081, 1180, 1288, 1405, 1534, 1673, 1826, 1993,
2175, 2373, 2590, 2826, 3084, 3365, 3672, 4008,
4373, 4772, 5208, 5683, 6202, 6767, 7385, 8059,
8794, 9597, 10472, 11428, 12471, 13609, 14851, 16206,
17685, 19298, 21060, 22981, 25078, 27367, 29864, 32589,
-29973, -26728, -23186, -19322, -15105, -10503, -5481, -1,
1, 1, 5481, 10503, 15105, 19322, 23186, 26728,
29973, -32589, -29864, -27367, -25078, -22981, -21060, -19298,
-17685, -16206, -14851, -13609, -12471, -11428, -10472, -9597,
-8794, -8059, -7385, -6767, -6202, -5683, -5208, -4772,
-4373, -4008, -3672, -3365, -3084, -2826, -2590, -2373,
-2175, -1993, -1826, -1673, -1534, -1405, -1288, -1180,
-1081, -991, -908, -832, -763, -699, -640, -587,
-538, -493, -452, -414, -379, -348, -318, -292,
-267, -245, -225, -206, -189, -173, -158, -145,
-133, -122, -112, -102, -94, -86, -79, -72,
-66, -61, -56, -51, -47, -43, -42, -41,
-40, -39, -38, -37, -36, -35, -34, -33,
-32, -31, -30, -29, -28, -27, -26, -25,
-24, -23, -22, -21, -20, -19, -18, -17,
-16, -15, -14, -13, -12, -11, -10, -9,
-8, -7, -6, -5, -4, -3, -2, -1
};
static int dpcm_decode_init(AVCodecContext *avctx)
{
DPCMContext *s = avctx->priv_data;
int i;
short square;
s->channels = avctx->channels;
switch(avctx->codec->id) {
case CODEC_ID_ROQ_DPCM:
/* initialize square table */
for (i = 0; i < 128; i++) {
square = i * i;
s->roq_square_array[i] = square;
s->roq_square_array[i + 128] = -square;
}
break;
default:
break;
}
return 0;
}
static int dpcm_decode_frame(AVCodecContext *avctx,
void *data, int *data_size,
uint8_t *buf, int buf_size)
{
DPCMContext *s = avctx->priv_data;
int in, out = 0;
int i;
int predictor[2];
int channel_number = 0;
short *output_samples = data;
int sequence_number;
switch(avctx->codec->id) {
case CODEC_ID_ROQ_DPCM:
if (s->channels == 1)
predictor[0] = LE_16(&buf[6]);
else {
predictor[0] = buf[7] << 8;
predictor[1] = buf[6] << 8;
}
SE_16BIT(predictor[0]);
SE_16BIT(predictor[1]);
/* decode the samples */
for (in = 8, out = 0; in < buf_size; in++, out++) {
predictor[channel_number] += s->roq_square_array[buf[in]];
SATURATE_S16(predictor[channel_number]);
output_samples[out] = predictor[channel_number];
/* toggle channel */
channel_number ^= s->channels - 1;
}
break;
case CODEC_ID_INTERPLAY_DPCM:
in = 0;
sequence_number = LE_16(&buf[in]);
in += 6; /* skip over the stream mask and stream length */
if (sequence_number == 1) {
predictor[0] = LE_16(&buf[in]);
in += 2;
SE_16BIT(predictor[0])
if (s->channels == 2) {
predictor[1] = LE_16(&buf[in]);
SE_16BIT(predictor[1])
in += 2;
}
} else {
for (i = 0; i < s->channels; i++)
predictor[i] = s->last_delta[i];
}
while (in < buf_size) {
predictor[channel_number] += interplay_delta_table[buf[in++]];
SATURATE_S16(predictor[channel_number]);
output_samples[out++] = predictor[channel_number];
/* toggle channel */
channel_number ^= s->channels - 1;
}
/* save predictors for next round */
for (i = 0; i < s->channels; i++)
s->last_delta[i] = predictor[i];
break;
}
*data_size = out * sizeof(short);
return buf_size;
}
AVCodec roq_dpcm_decoder = {
"roq_dpcm",
CODEC_TYPE_AUDIO,
CODEC_ID_ROQ_DPCM,
sizeof(DPCMContext),
dpcm_decode_init,
NULL,
NULL,
dpcm_decode_frame,
};
AVCodec interplay_dpcm_decoder = {
"interplay_dpcm",
CODEC_TYPE_AUDIO,
CODEC_ID_INTERPLAY_DPCM,
sizeof(DPCMContext),
dpcm_decode_init,
NULL,
NULL,
dpcm_decode_frame,
};

145
libavcodec/interplayvideo.c Normal file
View file

@ -0,0 +1,145 @@
/*
* Interplay MVE Video Decoder
* Copyright (C) 2003 the ffmpeg project
*
* 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*/
/**
* @file roqvideo.c
* Interplay MVE Video Decoder by Mike Melanson
* For more information about the Interplay MVE format, visit:
* http://www.pcisys.net/~melanson/codecs/
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "common.h"
#include "avcodec.h"
#include "dsputil.h"
typedef struct IpvideoContext {
AVCodecContext *avctx;
DSPContext dsp;
AVFrame last_frame;
AVFrame current_frame;
int first_frame;
int receiving_decoding_map;
unsigned char *decoding_map;
int decoding_map_size;
unsigned char *buf;
int size;
} IpvideoContext;
static int ipvideo_decode_init(AVCodecContext *avctx)
{
IpvideoContext *s = avctx->priv_data;
s->avctx = avctx;
avctx->pix_fmt = PIX_FMT_YUV444P;
avctx->has_b_frames = 0;
dsputil_init(&s->dsp, avctx);
s->first_frame = 1;
s->receiving_decoding_map = 1; /* decoding map will be received first */
/* decoding map contains 4 bits of information per 8x8 block */
s->decoding_map_size = avctx->width * avctx->height / (8 * 8 * 2);
s->decoding_map = av_malloc(s->decoding_map_size);
return 0;
}
static int ipvideo_decode_frame(AVCodecContext *avctx,
void *data, int *data_size,
uint8_t *buf, int buf_size)
{
IpvideoContext *s = avctx->priv_data;
if (s->receiving_decoding_map) {
/* receiving the decoding map on this iteration */
s->receiving_decoding_map = 0;
if (buf_size != s->decoding_map_size)
printf (" Interplay video: buf_size != decoding_map_size (%d != %d)\n",
buf_size, s->decoding_map_size);
else
memcpy(s->decoding_map, buf, buf_size);
*data_size = 0;
*(AVFrame*)data = s->last_frame;
} else {
/* receiving the compressed video data on this iteration */
s->receiving_decoding_map = 1;
s->buf = buf;
s->size = buf_size;
if (avctx->get_buffer(avctx, &s->current_frame)) {
printf (" Interplay Video: get_buffer() failed\n");
return -1;
}
// ipvideo_decode_frame(s);
memset(s->current_frame.data[0], 0x80, s->current_frame.linesize[0] * avctx->height);
memset(s->current_frame.data[1], 0x80, s->current_frame.linesize[1] * avctx->height / 4);
memset(s->current_frame.data[2], 0x80, s->current_frame.linesize[2] * avctx->height / 4);
/* release the last frame if it is allocated */
if (s->first_frame)
s->first_frame = 0;
else
avctx->release_buffer(avctx, &s->last_frame);
/* shuffle frames */
s->last_frame = s->current_frame;
*data_size = sizeof(AVFrame);
*(AVFrame*)data = s->current_frame;
}
/* always report that the buffer was completely consumed */
return buf_size;
}
static int ipvideo_decode_end(AVCodecContext *avctx)
{
IpvideoContext *s = avctx->priv_data;
/* release the last frame */
avctx->release_buffer(avctx, &s->last_frame);
av_free(s->decoding_map);
return 0;
}
AVCodec interplay_video_decoder = {
"interplayvideo",
CODEC_TYPE_VIDEO,
CODEC_ID_INTERPLAY_VIDEO,
sizeof(IpvideoContext),
ipvideo_decode_init,
NULL,
ipvideo_decode_end,
ipvideo_decode_frame,
CODEC_CAP_DR1,
};

406
libavcodec/roqvideo.c Normal file
View file

@ -0,0 +1,406 @@
/*
* Copyright (C) 2003 the ffmpeg project
*
* 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*/
/**
* @file roqvideo.c
* Id RoQ Video Decoder by Dr. Tim Ferguson
* For more information about the Id RoQ format, visit:
* http://www.csse.monash.edu.au/~timf/
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "common.h"
#include "avcodec.h"
#include "dsputil.h"
typedef struct {
unsigned char y0, y1, y2, y3, u, v;
} roq_cell;
typedef struct {
int idx[4];
} roq_qcell;
typedef struct RoqContext {
AVCodecContext *avctx;
DSPContext dsp;
AVFrame last_frame;
AVFrame current_frame;
int first_frame;
int y_stride;
int c_stride;
roq_cell cells[256];
roq_qcell qcells[256];
unsigned char *buf;
int size;
} RoqContext;
#define RoQ_INFO 0x1001
#define RoQ_QUAD_CODEBOOK 0x1002
#define RoQ_QUAD_VQ 0x1011
#define RoQ_SOUND_MONO 0x1020
#define RoQ_SOUND_STEREO 0x1021
#define RoQ_ID_MOT 0x00
#define RoQ_ID_FCC 0x01
#define RoQ_ID_SLD 0x02
#define RoQ_ID_CCC 0x03
#define get_byte(in_buffer) *(in_buffer++)
#define get_word(in_buffer) ((unsigned short)(in_buffer += 2, \
(in_buffer[-1] << 8 | in_buffer[-2])))
#define get_long(in_buffer) ((unsigned long)(in_buffer += 4, \
(in_buffer[-1] << 24 | in_buffer[-2] << 16 | in_buffer[-3] << 8 | in_buffer[-4])))
static void apply_vector_2x2(RoqContext *ri, int x, int y, roq_cell *cell)
{
unsigned char *yptr;
yptr = ri->current_frame.data[0] + (y * ri->y_stride) + x;
*yptr++ = cell->y0;
*yptr++ = cell->y1;
yptr += (ri->y_stride - 2);
*yptr++ = cell->y2;
*yptr++ = cell->y3;
ri->current_frame.data[1][(y/2) * (ri->c_stride) + x/2] = cell->u;
ri->current_frame.data[2][(y/2) * (ri->c_stride) + x/2] = cell->v;
}
static void apply_vector_4x4(RoqContext *ri, int x, int y, roq_cell *cell)
{
unsigned long row_inc, c_row_inc;
register unsigned char y0, y1, u, v;
unsigned char *yptr, *uptr, *vptr;
yptr = ri->current_frame.data[0] + (y * ri->y_stride) + x;
uptr = ri->current_frame.data[1] + (y/2) * (ri->c_stride) + x/2;
vptr = ri->current_frame.data[2] + (y/2) * (ri->c_stride) + x/2;
row_inc = ri->y_stride - 4;
c_row_inc = (ri->c_stride) - 2;
*yptr++ = y0 = cell->y0; *uptr++ = u = cell->u; *vptr++ = v = cell->v;
*yptr++ = y0;
*yptr++ = y1 = cell->y1; *uptr++ = u; *vptr++ = v;
*yptr++ = y1;
yptr += row_inc;
*yptr++ = y0;
*yptr++ = y0;
*yptr++ = y1;
*yptr++ = y1;
yptr += row_inc; uptr += c_row_inc; vptr += c_row_inc;
*yptr++ = y0 = cell->y2; *uptr++ = u; *vptr++ = v;
*yptr++ = y0;
*yptr++ = y1 = cell->y3; *uptr++ = u; *vptr++ = v;
*yptr++ = y1;
yptr += row_inc;
*yptr++ = y0;
*yptr++ = y0;
*yptr++ = y1;
*yptr++ = y1;
}
static void apply_motion_4x4(RoqContext *ri, int x, int y, unsigned char mv,
char mean_x, char mean_y)
{
int i, mx, my;
unsigned char *pa, *pb;
mx = x + 8 - (mv >> 4) - mean_x;
my = y + 8 - (mv & 0xf) - mean_y;
pa = ri->current_frame.data[0] + (y * ri->y_stride) + x;
pb = ri->last_frame.data[0] + (my * ri->y_stride) + mx;
for(i = 0; i < 4; i++) {
pa[0] = pb[0];
pa[1] = pb[1];
pa[2] = pb[2];
pa[3] = pb[3];
pa += ri->y_stride;
pb += ri->y_stride;
}
pa = ri->current_frame.data[1] + (y/2) * (ri->c_stride) + x/2;
pb = ri->last_frame.data[1] + (my/2) * (ri->c_stride) + (mx + 1)/2;
for(i = 0; i < 2; i++) {
pa[0] = pb[0];
pa[1] = pb[1];
pa += ri->c_stride;
pb += ri->c_stride;
}
pa = ri->current_frame.data[2] + (y/2) * (ri->c_stride) + x/2;
pb = ri->last_frame.data[2] + (my/2) * (ri->c_stride) + (mx + 1)/2;
for(i = 0; i < 2; i++) {
pa[0] = pb[0];
pa[1] = pb[1];
pa += ri->c_stride;
pb += ri->c_stride;
}
}
static void apply_motion_8x8(RoqContext *ri, int x, int y,
unsigned char mv, char mean_x, char mean_y)
{
int mx, my, i;
unsigned char *pa, *pb;
mx = x + 8 - (mv >> 4) - mean_x;
my = y + 8 - (mv & 0xf) - mean_y;
pa = ri->current_frame.data[0] + (y * ri->y_stride) + x;
pb = ri->last_frame.data[0] + (my * ri->y_stride) + mx;
for(i = 0; i < 8; i++) {
pa[0] = pb[0];
pa[1] = pb[1];
pa[2] = pb[2];
pa[3] = pb[3];
pa[4] = pb[4];
pa[5] = pb[5];
pa[6] = pb[6];
pa[7] = pb[7];
pa += ri->y_stride;
pb += ri->y_stride;
}
pa = ri->current_frame.data[1] + (y/2) * (ri->c_stride) + x/2;
pb = ri->last_frame.data[1] + (my/2) * (ri->c_stride) + (mx + 1)/2;
for(i = 0; i < 4; i++) {
pa[0] = pb[0];
pa[1] = pb[1];
pa[2] = pb[2];
pa[3] = pb[3];
pa += ri->c_stride;
pb += ri->c_stride;
}
pa = ri->current_frame.data[2] + (y/2) * (ri->c_stride) + x/2;
pb = ri->last_frame.data[2] + (my/2) * (ri->c_stride) + (mx + 1)/2;
for(i = 0; i < 4; i++) {
pa[0] = pb[0];
pa[1] = pb[1];
pa[2] = pb[2];
pa[3] = pb[3];
pa += ri->c_stride;
pb += ri->c_stride;
}
}
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;
int vqid, bpos, xpos, ypos, xp, yp, x, y;
int frame_stats[2][4] = {{0},{0}};
roq_qcell *qcell;
unsigned char *buf = ri->buf;
unsigned char *buf_end = ri->buf + ri->size;
while (buf < buf_end) {
chunk_id = get_word(buf);
chunk_size = get_long(buf);
chunk_arg = get_word(buf);
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++) {
ri->cells[i].y0 = get_byte(buf);
ri->cells[i].y1 = get_byte(buf);
ri->cells[i].y2 = get_byte(buf);
ri->cells[i].y3 = get_byte(buf);
ri->cells[i].u = get_byte(buf);
ri->cells[i].v = get_byte(buf);
}
for(i = 0; i < nv2; i++)
for(j = 0; j < 4; j++)
ri->qcells[i].idx[j] = get_byte(buf);
}
}
bpos = xpos = ypos = 0;
while(bpos < chunk_size) {
for (yp = ypos; yp < ypos + 16; yp += 8)
for (xp = xpos; xp < xpos + 16; xp += 8) {
if (vqflg_pos < 0) {
vqflg = buf[bpos++]; vqflg |= (buf[bpos++] << 8);
vqflg_pos = 7;
}
vqid = (vqflg >> (vqflg_pos * 2)) & 0x3;
frame_stats[0][vqid]++;
vqflg_pos--;
switch(vqid) {
case RoQ_ID_MOT:
apply_motion_8x8(ri, xp, yp, 0, 8, 8);
break;
case RoQ_ID_FCC:
apply_motion_8x8(ri, xp, yp, buf[bpos++], chunk_arg >> 8,
chunk_arg & 0xff);
break;
case RoQ_ID_SLD:
qcell = ri->qcells + buf[bpos++];
apply_vector_4x4(ri, xp, yp, ri->cells + qcell->idx[0]);
apply_vector_4x4(ri, xp+4, yp, ri->cells + qcell->idx[1]);
apply_vector_4x4(ri, xp, yp+4, ri->cells + qcell->idx[2]);
apply_vector_4x4(ri, xp+4, yp+4, ri->cells + qcell->idx[3]);
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;
if (vqflg_pos < 0) {
vqflg = buf[bpos++];
vqflg |= (buf[bpos++] << 8);
vqflg_pos = 7;
}
vqid = (vqflg >> (vqflg_pos * 2)) & 0x3;
frame_stats[1][vqid]++;
vqflg_pos--;
switch(vqid) {
case RoQ_ID_MOT:
apply_motion_4x4(ri, x, y, 0, 8, 8);
break;
case RoQ_ID_FCC:
apply_motion_4x4(ri, x, y, buf[bpos++],
chunk_arg >> 8, chunk_arg & 0xff);
break;
case RoQ_ID_SLD:
qcell = ri->qcells + buf[bpos++];
apply_vector_2x2(ri, x, y, ri->cells + qcell->idx[0]);
apply_vector_2x2(ri, x+2, y, ri->cells + qcell->idx[1]);
apply_vector_2x2(ri, x, y+2, ri->cells + qcell->idx[2]);
apply_vector_2x2(ri, x+2, y+2, ri->cells + qcell->idx[3]);
break;
case RoQ_ID_CCC:
apply_vector_2x2(ri, x, y, ri->cells + buf[bpos]);
apply_vector_2x2(ri, x+2, y, ri->cells + buf[bpos+1]);
apply_vector_2x2(ri, x, y+2, ri->cells + buf[bpos+2]);
apply_vector_2x2(ri, x+2, y+2, ri->cells + buf[bpos+3]);
bpos += 4;
break;
}
}
break;
default:
printf("Unknown vq code: %d\n", vqid);
}
}
xpos += 16;
if (xpos >= ri->avctx->width) {
xpos -= ri->avctx->width;
ypos += 16;
}
if(ypos >= ri->avctx->height)
break;
}
}
static int roq_decode_init(AVCodecContext *avctx)
{
RoqContext *s = avctx->priv_data;
s->avctx = avctx;
s->first_frame = 1;
avctx->pix_fmt = PIX_FMT_YUV420P;
avctx->has_b_frames = 0;
dsputil_init(&s->dsp, avctx);
return 0;
}
static int roq_decode_frame(AVCodecContext *avctx,
void *data, int *data_size,
uint8_t *buf, int buf_size)
{
RoqContext *s = avctx->priv_data;
*data_size = 0;
if (avctx->get_buffer(avctx, &s->current_frame)) {
printf (" RoQ: get_buffer() failed\n");
return -1;
}
s->y_stride = s->current_frame.linesize[0];
s->c_stride = s->current_frame.linesize[1];
s->buf = buf;
s->size = buf_size;
roqvideo_decode_frame(s);
/* release the last frame if it is allocated */
if (s->first_frame)
s->first_frame = 0;
else
avctx->release_buffer(avctx, &s->last_frame);
/* shuffle frames */
s->last_frame = s->current_frame;
*data_size = sizeof(AVFrame);
*(AVFrame*)data = s->current_frame;
return buf_size;
}
static int roq_decode_end(AVCodecContext *avctx)
{
RoqContext *s = avctx->priv_data;
/* release the last frame */
avctx->release_buffer(avctx, &s->last_frame);
return 0;
}
AVCodec roq_decoder = {
"roqvideo",
CODEC_TYPE_VIDEO,
CODEC_ID_ROQ,
sizeof(RoqContext),
roq_decode_init,
NULL,
roq_decode_end,
roq_decode_frame,
CODEC_CAP_DR1,
};