*
* SVQ1 Encoder (c) 2004 Mike Melanson <melanson@pcisys.net>
*
- * This file is part of FFmpeg.
+ * This file is part of Libav.
*
- * FFmpeg is free software; you can redistribute it and/or
+ * Libav 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,
+ * Libav 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
+ * License along with Libav; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/**
- * @file svq1.c
+ * @file
* Sorenson Vector Quantizer #1 (SVQ1) video codec.
* For more information of the SVQ1 algorithm, visit:
* http://www.pcisys.net/~melanson/codecs/
*/
-//#define DEBUG_SVQ1
#include "avcodec.h"
#include "dsputil.h"
#include "mpegvideo.h"
+#include "mathops.h"
#include "svq1.h"
typedef struct svq1_pmv_s {
int x;
int y;
-} svq1_pmv_t;
+} svq1_pmv;
static const uint16_t checksum_table[256] = {
0x0000, 0x1021, 0x2042, 0x3063, 0x4084, 0x50A5, 0x60C6, 0x70E7,
#define SVQ1_CALC_CODEBOOK_ENTRIES(cbook)\
codebook = (const uint32_t *) cbook[level];\
- bit_cache = get_bits (bitbuf, 4*stages);\
+ if (stages > 0)\
+ bit_cache = get_bits (bitbuf, 4*stages);\
/* calculate codebook entries for this vector */\
for (j=0; j < stages; j++) {\
entries[j] = (((bit_cache >> (4*(stages - j - 1))) & 0xF) + 16*j) << (level + 1);\
}
if ((stages > 0) && (level >= 4)) {
-#ifdef DEBUG_SVQ1
- av_log(s->avctx, AV_LOG_INFO, "Error (svq1_decode_block_intra): invalid vector: stages=%i level=%i\n",stages,level);
-#endif
+ av_dlog(NULL,
+ "Error (svq1_decode_block_intra): invalid vector: stages=%i level=%i\n",
+ stages, level);
return -1; /* invalid vector */
}
if (stages == -1) continue; /* skip vector */
if ((stages > 0) && (level >= 4)) {
-#ifdef DEBUG_SVQ1
- av_log(s->avctx, AV_LOG_INFO, "Error (svq1_decode_block_non_intra): invalid vector: stages=%i level=%i\n",stages,level);
-#endif
+ av_dlog(NULL,
+ "Error (svq1_decode_block_non_intra): invalid vector: stages=%i level=%i\n",
+ stages, level);
return -1; /* invalid vector */
}
return 0;
}
-static int svq1_decode_motion_vector (GetBitContext *bitbuf, svq1_pmv_t *mv, svq1_pmv_t **pmv) {
+static int svq1_decode_motion_vector (GetBitContext *bitbuf, svq1_pmv *mv, svq1_pmv **pmv) {
int diff;
int i;
/* add median of motion vector predictors and clip result */
if (i == 1)
- mv->y = ((diff + mid_pred(pmv[0]->y, pmv[1]->y, pmv[2]->y)) << 26) >> 26;
+ mv->y = sign_extend(diff + mid_pred(pmv[0]->y, pmv[1]->y, pmv[2]->y), 6);
else
- mv->x = ((diff + mid_pred(pmv[0]->x, pmv[1]->x, pmv[2]->x)) << 26) >> 26;
+ mv->x = sign_extend(diff + mid_pred(pmv[0]->x, pmv[1]->x, pmv[2]->x), 6);
}
return 0;
static int svq1_motion_inter_block (MpegEncContext *s, GetBitContext *bitbuf,
uint8_t *current, uint8_t *previous, int pitch,
- svq1_pmv_t *motion, int x, int y) {
+ svq1_pmv *motion, int x, int y) {
uint8_t *src;
uint8_t *dst;
- svq1_pmv_t mv;
- svq1_pmv_t *pmv[3];
+ svq1_pmv mv;
+ svq1_pmv *pmv[3];
int result;
/* predict and decode motion vector */
if(x + (mv.x >> 1)<0)
mv.x= 0;
-#if 0
- int w= (s->width+15)&~15;
- int h= (s->height+15)&~15;
- if(x + (mv.x >> 1)<0 || y + (mv.y >> 1)<0 || x + (mv.x >> 1) + 16 > w || y + (mv.y >> 1) + 16> h)
- av_log(s->avctx, AV_LOG_INFO, "%d %d %d %d\n", x, y, x + (mv.x >> 1), y + (mv.y >> 1));
-#endif
-
src = &previous[(x + (mv.x >> 1)) + (y + (mv.y >> 1))*pitch];
dst = current;
static int svq1_motion_inter_4v_block (MpegEncContext *s, GetBitContext *bitbuf,
uint8_t *current, uint8_t *previous, int pitch,
- svq1_pmv_t *motion,int x, int y) {
+ svq1_pmv *motion,int x, int y) {
uint8_t *src;
uint8_t *dst;
- svq1_pmv_t mv;
- svq1_pmv_t *pmv[4];
+ svq1_pmv mv;
+ svq1_pmv *pmv[4];
int i, result;
/* predict and decode motion vector (0) */
if(x + (mvx >> 1)<0)
mvx= 0;
-#if 0
- int w= (s->width+15)&~15;
- int h= (s->height+15)&~15;
- if(x + (mvx >> 1)<0 || y + (mvy >> 1)<0 || x + (mvx >> 1) + 8 > w || y + (mvy >> 1) + 8> h)
- av_log(s->avctx, AV_LOG_INFO, "%d %d %d %d\n", x, y, x + (mvx >> 1), y + (mvy >> 1));
-#endif
src = &previous[(x + (mvx >> 1)) + (y + (mvy >> 1))*pitch];
dst = current;
static int svq1_decode_delta_block (MpegEncContext *s, GetBitContext *bitbuf,
uint8_t *current, uint8_t *previous, int pitch,
- svq1_pmv_t *motion, int x, int y) {
+ svq1_pmv *motion, int x, int y) {
uint32_t block_type;
int result = 0;
if (result != 0)
{
-#ifdef DEBUG_SVQ1
- av_log(s->avctx, AV_LOG_INFO, "Error in svq1_motion_inter_block %i\n",result);
-#endif
+ av_dlog(s->avctx, "Error in svq1_motion_inter_block %i\n", result);
break;
}
result = svq1_decode_block_non_intra (bitbuf, current, pitch);
if (result != 0)
{
-#ifdef DEBUG_SVQ1
- av_log(s->avctx, AV_LOG_INFO, "Error in svq1_motion_inter_4v_block %i\n",result);
-#endif
+ av_dlog(s->avctx, "Error in svq1_motion_inter_4v_block %i\n", result);
break;
}
result = svq1_decode_block_non_intra (bitbuf, current, pitch);
return result;
}
-static uint16_t svq1_packet_checksum (const uint8_t *data, const int length, int value) {
+uint16_t ff_svq1_packet_checksum (const uint8_t *data, const int length, int value) {
int i;
for (i=0; i < length; i++) {
static int svq1_decode_frame_header (GetBitContext *bitbuf,MpegEncContext *s) {
int frame_size_code;
- int temporal_reference;
- temporal_reference = get_bits (bitbuf, 8);
+ skip_bits(bitbuf, 8); /* temporal_reference */
/* frame type */
s->pict_type= get_bits (bitbuf, 2)+1;
if(s->pict_type==4)
return -1;
- if (s->pict_type == FF_I_TYPE) {
+ if (s->pict_type == AV_PICTURE_TYPE_I) {
/* unknown fields */
if (s->f_code == 0x50 || s->f_code == 0x60) {
int csum = get_bits (bitbuf, 16);
- csum = svq1_packet_checksum (bitbuf->buffer, bitbuf->size_in_bits>>3, csum);
+ csum = ff_svq1_packet_checksum (bitbuf->buffer, bitbuf->size_in_bits>>3, csum);
// av_log(s->avctx, AV_LOG_INFO, "%s checksum (%02x) for packet data\n",
// (csum == 0) ? "correct" : "incorrect", csum);
static int svq1_decode_frame(AVCodecContext *avctx,
void *data, int *data_size,
- const uint8_t *buf, int buf_size)
+ AVPacket *avpkt)
{
+ const uint8_t *buf = avpkt->data;
+ int buf_size = avpkt->size;
MpegEncContext *s=avctx->priv_data;
uint8_t *current, *previous;
int result, i, x, y, width, height;
AVFrame *pict = data;
+ svq1_pmv *pmv;
/* initialize bit buffer */
init_get_bits(&s->gb,buf,buf_size*8);
if (result != 0)
{
-#ifdef DEBUG_SVQ1
- av_log(s->avctx, AV_LOG_INFO, "Error in svq1_decode_frame_header %i\n",result);
-#endif
+ av_dlog(s->avctx, "Error in svq1_decode_frame_header %i\n",result);
return result;
}
+ avcodec_set_dimensions(avctx, s->width, s->height);
//FIXME this avoids some confusion for "B frames" without 2 references
//this should be removed after libavcodec can handle more flexible picture types & ordering
- if(s->pict_type==FF_B_TYPE && s->last_picture_ptr==NULL) return buf_size;
+ if(s->pict_type==AV_PICTURE_TYPE_B && s->last_picture_ptr==NULL) return buf_size;
- if(avctx->hurry_up && s->pict_type==FF_B_TYPE) return buf_size;
- if( (avctx->skip_frame >= AVDISCARD_NONREF && s->pict_type==FF_B_TYPE)
- ||(avctx->skip_frame >= AVDISCARD_NONKEY && s->pict_type!=FF_I_TYPE)
+ if( (avctx->skip_frame >= AVDISCARD_NONREF && s->pict_type==AV_PICTURE_TYPE_B)
+ ||(avctx->skip_frame >= AVDISCARD_NONKEY && s->pict_type!=AV_PICTURE_TYPE_I)
|| avctx->skip_frame >= AVDISCARD_ALL)
return buf_size;
if(MPV_frame_start(s, avctx) < 0)
return -1;
+ pmv = av_malloc((FFALIGN(s->width, 16)/8 + 3) * sizeof(*pmv));
+ if (!pmv)
+ return -1;
+
/* decode y, u and v components */
for (i=0; i < 3; i++) {
int linesize;
if (i == 0) {
- width = (s->width+15)&~15;
- height = (s->height+15)&~15;
+ width = FFALIGN(s->width, 16);
+ height = FFALIGN(s->height, 16);
linesize= s->linesize;
} else {
if(s->flags&CODEC_FLAG_GRAY) break;
- width = (s->width/4+15)&~15;
- height = (s->height/4+15)&~15;
+ width = FFALIGN(s->width/4, 16);
+ height = FFALIGN(s->height/4, 16);
linesize= s->uvlinesize;
}
- current = s->current_picture.data[i];
+ current = s->current_picture.f.data[i];
- if(s->pict_type==FF_B_TYPE){
- previous = s->next_picture.data[i];
+ if(s->pict_type==AV_PICTURE_TYPE_B){
+ previous = s->next_picture.f.data[i];
}else{
- previous = s->last_picture.data[i];
+ previous = s->last_picture.f.data[i];
}
- if (s->pict_type == FF_I_TYPE) {
+ if (s->pict_type == AV_PICTURE_TYPE_I) {
/* keyframe */
for (y=0; y < height; y+=16) {
for (x=0; x < width; x+=16) {
result = svq1_decode_block_intra (&s->gb, ¤t[x], linesize);
if (result != 0)
{
-//#ifdef DEBUG_SVQ1
av_log(s->avctx, AV_LOG_INFO, "Error in svq1_decode_block %i (keyframe)\n",result);
-//#endif
- return result;
+ goto err;
}
}
current += 16*linesize;
}
} else {
- svq1_pmv_t pmv[width/8+3];
/* delta frame */
- memset (pmv, 0, ((width / 8) + 3) * sizeof(svq1_pmv_t));
+ memset (pmv, 0, ((width / 8) + 3) * sizeof(svq1_pmv));
for (y=0; y < height; y+=16) {
for (x=0; x < width; x+=16) {
linesize, pmv, x, y);
if (result != 0)
{
-#ifdef DEBUG_SVQ1
- av_log(s->avctx, AV_LOG_INFO, "Error in svq1_decode_delta_block %i\n",result);
-#endif
- return result;
+ av_dlog(s->avctx, "Error in svq1_decode_delta_block %i\n",result);
+ goto err;
}
}
MPV_frame_end(s);
*data_size=sizeof(AVFrame);
- return buf_size;
+ result = buf_size;
+err:
+ av_free(pmv);
+ return result;
}
static av_cold int svq1_decode_init(AVCodecContext *avctx)
{
MpegEncContext *s = avctx->priv_data;
int i;
+ int offset = 0;
MPV_decode_defaults(s);
s->flags= avctx->flags;
if (MPV_common_init(s) < 0) return -1;
- init_vlc(&svq1_block_type, 2, 4,
+ INIT_VLC_STATIC(&svq1_block_type, 2, 4,
&ff_svq1_block_type_vlc[0][1], 2, 1,
- &ff_svq1_block_type_vlc[0][0], 2, 1, 1);
+ &ff_svq1_block_type_vlc[0][0], 2, 1, 6);
- init_vlc(&svq1_motion_component, 7, 33,
+ INIT_VLC_STATIC(&svq1_motion_component, 7, 33,
&mvtab[0][1], 2, 1,
- &mvtab[0][0], 2, 1, 1);
+ &mvtab[0][0], 2, 1, 176);
for (i = 0; i < 6; i++) {
+ static const uint8_t sizes[2][6] = {{14, 10, 14, 18, 16, 18}, {10, 10, 14, 14, 14, 16}};
+ static VLC_TYPE table[168][2];
+ svq1_intra_multistage[i].table = &table[offset];
+ svq1_intra_multistage[i].table_allocated = sizes[0][i];
+ offset += sizes[0][i];
init_vlc(&svq1_intra_multistage[i], 3, 8,
&ff_svq1_intra_multistage_vlc[i][0][1], 2, 1,
- &ff_svq1_intra_multistage_vlc[i][0][0], 2, 1, 1);
+ &ff_svq1_intra_multistage_vlc[i][0][0], 2, 1, INIT_VLC_USE_NEW_STATIC);
+ svq1_inter_multistage[i].table = &table[offset];
+ svq1_inter_multistage[i].table_allocated = sizes[1][i];
+ offset += sizes[1][i];
init_vlc(&svq1_inter_multistage[i], 3, 8,
&ff_svq1_inter_multistage_vlc[i][0][1], 2, 1,
- &ff_svq1_inter_multistage_vlc[i][0][0], 2, 1, 1);
+ &ff_svq1_inter_multistage_vlc[i][0][0], 2, 1, INIT_VLC_USE_NEW_STATIC);
}
- init_vlc(&svq1_intra_mean, 8, 256,
+ INIT_VLC_STATIC(&svq1_intra_mean, 8, 256,
&ff_svq1_intra_mean_vlc[0][1], 4, 2,
- &ff_svq1_intra_mean_vlc[0][0], 4, 2, 1);
+ &ff_svq1_intra_mean_vlc[0][0], 4, 2, 632);
- init_vlc(&svq1_inter_mean, 9, 512,
+ INIT_VLC_STATIC(&svq1_inter_mean, 9, 512,
&ff_svq1_inter_mean_vlc[0][1], 4, 2,
- &ff_svq1_inter_mean_vlc[0][0], 4, 2, 1);
+ &ff_svq1_inter_mean_vlc[0][0], 4, 2, 1434);
return 0;
}
}
-AVCodec svq1_decoder = {
- "svq1",
- CODEC_TYPE_VIDEO,
- CODEC_ID_SVQ1,
- sizeof(MpegEncContext),
- svq1_decode_init,
- NULL,
- svq1_decode_end,
- svq1_decode_frame,
- CODEC_CAP_DR1,
+AVCodec ff_svq1_decoder = {
+ .name = "svq1",
+ .type = AVMEDIA_TYPE_VIDEO,
+ .id = CODEC_ID_SVQ1,
+ .priv_data_size = sizeof(MpegEncContext),
+ .init = svq1_decode_init,
+ .close = svq1_decode_end,
+ .decode = svq1_decode_frame,
+ .capabilities = CODEC_CAP_DR1,
.flush= ff_mpeg_flush,
- .pix_fmts= (enum PixelFormat[]){PIX_FMT_YUV410P, -1},
- .long_name= "Sorenson Vector Quantizer 1",
+ .pix_fmts= (const enum PixelFormat[]){PIX_FMT_YUV410P, PIX_FMT_NONE},
+ .long_name= NULL_IF_CONFIG_SMALL("Sorenson Vector Quantizer 1 / Sorenson Video 1 / SVQ1"),
};
projects / ffmpeg / blobdiff