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Moved some H.263+ variables to MpegEncContext to be thread-safe.

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Increase video_buffer on ffmpeg to avoid buffer overrun on big pictures.


Originally committed as revision 114 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Juanjo 2001-08-31 06:21:27 +00:00
parent 6dbd39fe70
commit 544286b3d3
4 changed files with 23 additions and 19 deletions
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4
ffmpeg.c
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@ -196,7 +196,7 @@ int av_grab(AVFormatContext *s)
UINT8 audio_buf[AUDIO_FIFO_SIZE/2];
UINT8 audio_buf1[AUDIO_FIFO_SIZE/2];
UINT8 audio_out[AUDIO_FIFO_SIZE/2];
UINT8 video_buffer[128*1024];
UINT8 video_buffer[1024*1024];
char buf[256];
short *samples;
URLContext *audio_handle = NULL, *video_handle = NULL;
@ -764,7 +764,7 @@ static void do_video_out(AVFormatContext *s,
int n1, n2, nb, i, ret, frame_number;
AVPicture *picture, *picture2, *pict;
AVPicture picture_tmp1, picture_tmp2;
UINT8 video_buffer[128*1024];
UINT8 video_buffer[1024*1024];
UINT8 *buf = NULL, *buf1 = NULL;
AVCodecContext *enc, *dec;

28
libavcodec/h263.c
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@ -38,10 +38,6 @@ static int h263_decode_block(MpegEncContext * s, DCTELEM * block,
static int mpeg4_decode_block(MpegEncContext * s, DCTELEM * block,
int n, int coded);
/* This are for H.263+ UMV */
/* Shouldn't be here */
static int umvplus = 0;
static int umvplus_dec = 0;
int h263_get_picture_format(int width, int height)
{
@ -102,8 +98,8 @@ void h263_encode_picture_header(MpegEncContext * s, int picture_number)
put_bits(&s->pb, 3, format);
put_bits(&s->pb,1,0); /* Custom PCF: off */
umvplus = (s->pict_type == P_TYPE) && s->unrestricted_mv;
put_bits(&s->pb, 1, umvplus); /* Unrestricted Motion Vector */
s->umvplus = (s->pict_type == P_TYPE) && s->unrestricted_mv;
put_bits(&s->pb, 1, s->umvplus); /* Unrestricted Motion Vector */
put_bits(&s->pb,1,0); /* SAC: off */
put_bits(&s->pb,1,0); /* Advanced Prediction Mode: off */
put_bits(&s->pb,1,0); /* Advanced Intra Coding: off */
@ -137,7 +133,7 @@ void h263_encode_picture_header(MpegEncContext * s, int picture_number)
}
/* Unlimited Unrestricted Motion Vectors Indicator (UUI) */
if (umvplus)
if (s->umvplus)
put_bits(&s->pb,1,1); /* Limited according tables of Annex D */
put_bits(&s->pb, 5, s->qscale);
}
@ -176,7 +172,7 @@ void h263_encode_mb(MpegEncContext * s,
/* motion vectors: 16x16 mode only now */
h263_pred_motion(s, 0, &pred_x, &pred_y);
if (!umvplus) {
if (!s->umvplus) {
h263_encode_motion(s, motion_x - pred_x);
h263_encode_motion(s, motion_y - pred_y);
}
@ -825,14 +821,14 @@ int h263_decode_mb(MpegEncContext *s,
/* 16x16 motion prediction */
s->mv_type = MV_TYPE_16X16;
h263_pred_motion(s, 0, &pred_x, &pred_y);
if (umvplus_dec)
if (s->umvplus_dec)
mx = h263p_decode_umotion(s, pred_x);
else
mx = h263_decode_motion(s, pred_x);
if (mx >= 0xffff)
return -1;
if (umvplus_dec)
if (s->umvplus_dec)
my = h263p_decode_umotion(s, pred_y);
else
my = h263_decode_motion(s, pred_y);
@ -840,21 +836,21 @@ int h263_decode_mb(MpegEncContext *s,
return -1;
s->mv[0][0][0] = mx;
s->mv[0][0][1] = my;
if (umvplus_dec && (mx - pred_x) == 1 && (my - pred_y) == 1)
if (s->umvplus_dec && (mx - pred_x) == 1 && (my - pred_y) == 1)
skip_bits1(&s->gb); /* Bit stuffing to prevent PSC */
} else {
s->mv_type = MV_TYPE_8X8;
for(i=0;i<4;i++) {
mot_val = h263_pred_motion(s, i, &pred_x, &pred_y);
if (umvplus_dec)
if (s->umvplus_dec)
mx = h263p_decode_umotion(s, pred_x);
else
mx = h263_decode_motion(s, pred_x);
if (mx >= 0xffff)
return -1;
if (umvplus_dec)
if (s->umvplus_dec)
my = h263p_decode_umotion(s, pred_y);
else
my = h263_decode_motion(s, pred_y);
@ -862,7 +858,7 @@ int h263_decode_mb(MpegEncContext *s,
return -1;
s->mv[0][i][0] = mx;
s->mv[0][i][1] = my;
if (umvplus_dec && (mx - pred_x) == 1 && (my - pred_y) == 1)
if (s->umvplus_dec && (mx - pred_x) == 1 && (my - pred_y) == 1)
skip_bits1(&s->gb); /* Bit stuffing to prevent PSC */
mot_val[0] = mx;
mot_val[1] = my;
@ -1222,7 +1218,7 @@ int h263_decode_picture_header(MpegEncContext *s)
format = get_bits(&s->gb, 3);
skip_bits(&s->gb,1); /* Custom PCF */
umvplus_dec = get_bits(&s->gb, 1); /* Unrestricted Motion Vector */
s->umvplus_dec = get_bits(&s->gb, 1); /* Unrestricted Motion Vector */
skip_bits(&s->gb, 10);
skip_bits(&s->gb, 3); /* Reserved */
@ -1252,7 +1248,7 @@ int h263_decode_picture_header(MpegEncContext *s)
if ((width == 0) || (height == 0))
return -1;
if (umvplus_dec) {
if (s->umvplus_dec) {
skip_bits1(&s->gb); /* Unlimited Unrestricted Motion Vectors Indicator (UUI) */
}

4
libavcodec/mpegvideo.c
View File

@ -278,6 +278,10 @@ int MPV_encode_init(AVCodecContext *avctx)
s->out_format = FMT_H263;
s->h263_plus = 1;
s->unrestricted_mv = 1;
/* These are just to be sure */
s->umvplus = 0;
s->umvplus_dec = 0;
break;
case CODEC_ID_RV10:
s->out_format = FMT_H263;

6
libavcodec/mpegvideo.h
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@ -128,7 +128,11 @@ typedef struct MpegEncContext {
int P_frame_bits; /* same for P frame */
INT64 wanted_bits;
INT64 total_bits;
/* H.263+ specific */
int umvplus;
int umvplus_dec;
/* mpeg4 specific */
int time_increment_bits;
int shape;