/*
- * RV10 codec
+ * RV10/RV20 decoder
* Copyright (c) 2000,2001 Fabrice Bellard
* Copyright (c) 2002-2004 Michael Niedermayer
*
*/
/**
- * @file libavcodec/rv10.c
- * RV10 codec.
+ * @file
+ * RV10/RV20 decoder
*/
+#include "libavcore/imgutils.h"
#include "avcodec.h"
#include "dsputil.h"
#include "mpegvideo.h"
+#include "mpeg4video.h"
+#include "h263.h"
//#define DEBUG
return -code;
}
-
-#if CONFIG_RV10_ENCODER
-/* write RV 1.0 compatible frame header */
-void rv10_encode_picture_header(MpegEncContext *s, int picture_number)
-{
- int full_frame= 0;
-
- align_put_bits(&s->pb);
-
- put_bits(&s->pb, 1, 1); /* marker */
-
- put_bits(&s->pb, 1, (s->pict_type == FF_P_TYPE));
-
- put_bits(&s->pb, 1, 0); /* not PB frame */
-
- put_bits(&s->pb, 5, s->qscale);
-
- if (s->pict_type == FF_I_TYPE) {
- /* specific MPEG like DC coding not used */
- }
- /* if multiple packets per frame are sent, the position at which
- to display the macroblocks is coded here */
- if(!full_frame){
- put_bits(&s->pb, 6, 0); /* mb_x */
- put_bits(&s->pb, 6, 0); /* mb_y */
- put_bits(&s->pb, 12, s->mb_width * s->mb_height);
- }
-
- put_bits(&s->pb, 3, 0); /* ignored */
-}
-#endif /* CONFIG_RV10_ENCODER */
-
/* read RV 1.0 compatible frame header */
static int rv10_decode_picture_header(MpegEncContext *s)
{
new_w= 4*((uint8_t*)s->avctx->extradata)[6+2*f];
new_h= 4*((uint8_t*)s->avctx->extradata)[7+2*f];
}else{
- new_w= s->width; //FIXME wrong we of course must save the original in the context
- new_h= s->height;
+ new_w= s->orig_width ;
+ new_h= s->orig_height;
}
if(new_w != s->width || new_h != s->height){
av_log(s->avctx, AV_LOG_DEBUG, "attempting to change resolution to %dx%d\n", new_w, new_h);
- if (avcodec_check_dimensions(s->avctx, new_h, new_w) < 0)
+ if (av_image_check_size(new_w, new_h, 0, s->avctx) < 0)
return -1;
MPV_common_end(s);
- s->width = s->avctx->width = new_w;
- s->height = s->avctx->height= new_h;
+ avcodec_set_dimensions(s->avctx, new_w, new_h);
+ s->width = new_w;
+ s->height = new_h;
if (MPV_common_init(s) < 0)
return -1;
}
s->out_format = FMT_H263;
s->codec_id= avctx->codec_id;
- s->width = avctx->coded_width;
- s->height = avctx->coded_height;
+ s->orig_width = s->width = avctx->coded_width;
+ s->orig_height= s->height = avctx->coded_height;
s->h263_long_vectors= ((uint8_t*)avctx->extradata)[3] & 1;
avctx->sub_id= AV_RB32((uint8_t*)avctx->extradata + 4);
}
static int rv10_decode_packet(AVCodecContext *avctx,
- const uint8_t *buf, int buf_size)
+ const uint8_t *buf, int buf_size, int buf_size2)
{
MpegEncContext *s = avctx->priv_data;
int mb_count, mb_pos, left, start_mb_x;
s->mv_type = MV_TYPE_16X16;
ret=ff_h263_decode_mb(s, s->block);
+ if (ret != SLICE_ERROR && s->gb.size_in_bits < get_bits_count(&s->gb) && 8*buf_size2 >= get_bits_count(&s->gb)){
+ av_log(avctx, AV_LOG_DEBUG, "update size from %d to %d\n", s->gb.size_in_bits, 8*buf_size2);
+ s->gb.size_in_bits= 8*buf_size2;
+ ret= SLICE_OK;
+ }
+
if (ret == SLICE_ERROR || s->gb.size_in_bits < get_bits_count(&s->gb)) {
av_log(s->avctx, AV_LOG_ERROR, "ERROR at MB %d %d\n", s->mb_x, s->mb_y);
return -1;
ff_er_add_slice(s, start_mb_x, s->resync_mb_y, s->mb_x-1, s->mb_y, AC_END|DC_END|MV_END);
- return buf_size;
+ return s->gb.size_in_bits;
}
static int get_slice_offset(AVCodecContext *avctx, const uint8_t *buf, int n)
for(i=0; i<slice_count; i++){
int offset= get_slice_offset(avctx, slices_hdr, i);
- int size;
+ int size, size2;
if(i+1 == slice_count)
size= buf_size - offset;
else
size= get_slice_offset(avctx, slices_hdr, i+1) - offset;
- rv10_decode_packet(avctx, buf+offset, size);
+ if(i+2 >= slice_count)
+ size2= buf_size - offset;
+ else
+ size2= get_slice_offset(avctx, slices_hdr, i+2) - offset;
+
+ if(rv10_decode_packet(avctx, buf+offset, size, size2) > 8*size)
+ i++;
}
if(s->current_picture_ptr != NULL && s->mb_y>=s->mb_height){
return buf_size;
}
-AVCodec rv10_decoder = {
+AVCodec ff_rv10_decoder = {
"rv10",
- CODEC_TYPE_VIDEO,
+ AVMEDIA_TYPE_VIDEO,
CODEC_ID_RV10,
sizeof(MpegEncContext),
rv10_decode_init,
rv10_decode_end,
rv10_decode_frame,
CODEC_CAP_DR1,
+ .max_lowres = 3,
.long_name = NULL_IF_CONFIG_SMALL("RealVideo 1.0"),
.pix_fmts= ff_pixfmt_list_420,
};
-AVCodec rv20_decoder = {
+AVCodec ff_rv20_decoder = {
"rv20",
- CODEC_TYPE_VIDEO,
+ AVMEDIA_TYPE_VIDEO,
CODEC_ID_RV20,
sizeof(MpegEncContext),
rv10_decode_init,
rv10_decode_frame,
CODEC_CAP_DR1 | CODEC_CAP_DELAY,
.flush= ff_mpeg_flush,
+ .max_lowres = 3,
.long_name = NULL_IF_CONFIG_SMALL("RealVideo 2.0"),
.pix_fmts= ff_pixfmt_list_420,
};
-
-AVCodec rv10_encoder = {
- "rv10",
- CODEC_TYPE_VIDEO,
- CODEC_ID_RV10,
- sizeof(MpegEncContext),
- MPV_encode_init,
- MPV_encode_picture,
- MPV_encode_end,
- .pix_fmts= (enum PixelFormat[]){PIX_FMT_YUV420P, PIX_FMT_NONE},
- .long_name= NULL_IF_CONFIG_SMALL("RealVideo 1.0"),
-};
projects / ffmpeg / blobdiff