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authorReimar Döffinger <Reimar.Doeffinger@gmx.de>2010-11-03 17:01:30 +0000
committerReimar Döffinger <Reimar.Doeffinger@gmx.de>2010-11-03 17:01:30 +0000
commita940dc69121a60d5385cbeb2c8070e65c62d1b64 (patch)
tree85faf6e275cd9a48df0a3df5486c114dbe71fbbb /libavcodec/truemotion1.c
parentf1c5301413f6125b590f17ec62915215e3817bdd (diff)
downloadffmpeg-a940dc69121a60d5385cbeb2c8070e65c62d1b64.tar.gz
Fix decoding of 24 bpp TM1 (except for aspect).
Originally committed as revision 25662 to svn://svn.ffmpeg.org/ffmpeg/trunk
Diffstat (limited to 'libavcodec/truemotion1.c')
-rw-r--r--libavcodec/truemotion1.c16
1 files changed, 10 insertions, 6 deletions
diff --git a/libavcodec/truemotion1.c b/libavcodec/truemotion1.c
index b6b81f7ea1..eed558c2b1 100644
--- a/libavcodec/truemotion1.c
+++ b/libavcodec/truemotion1.c
@@ -307,6 +307,7 @@ static void gen_vector_table24(TrueMotion1Context *s, const uint8_t *sel_vector_
static int truemotion1_decode_header(TrueMotion1Context *s)
{
int i;
+ int width_shift = 0;
int new_pix_fmt;
struct frame_header header;
uint8_t header_buffer[128]; /* logical maximum size of the header */
@@ -373,8 +374,6 @@ static int truemotion1_decode_header(TrueMotion1Context *s)
}
}
}
- if (av_image_check_size(s->w, s->h, 0, s->avctx) < 0)
- return -1;
if (header.compression >= 17) {
av_log(s->avctx, AV_LOG_ERROR, "invalid compression type (%d)\n", header.compression);
@@ -396,11 +395,16 @@ static int truemotion1_decode_header(TrueMotion1Context *s)
}
}
- if (compression_types[header.compression].algorithm == ALGO_RGB24H)
+ if (compression_types[header.compression].algorithm == ALGO_RGB24H) {
new_pix_fmt = PIX_FMT_RGB32;
- else
+ width_shift = 1;
+ } else
new_pix_fmt = PIX_FMT_RGB555; // RGB565 is supported as well
+ s->w >>= width_shift;
+ if (av_image_check_size(s->w, s->h, 0, s->avctx) < 0)
+ return -1;
+
if (s->w != s->avctx->width || s->h != s->avctx->height ||
new_pix_fmt != s->avctx->pix_fmt) {
if (s->frame.data[0])
@@ -413,7 +417,7 @@ static int truemotion1_decode_header(TrueMotion1Context *s)
/* There is 1 change bit per 4 pixels, so each change byte represents
* 32 pixels; divide width by 4 to obtain the number of change bits and
* then round up to the nearest byte. */
- s->mb_change_bits_row_size = ((s->avctx->width >> 2) + 7) >> 3;
+ s->mb_change_bits_row_size = ((s->avctx->width >> (2 - width_shift)) + 7) >> 3;
if ((header.deltaset != s->last_deltaset) || (header.vectable != s->last_vectable))
{
@@ -827,7 +831,7 @@ static void truemotion1_decode_24bit(TrueMotion1Context *s)
}
}
- pixels_left -= 4;
+ pixels_left -= 2;
}
/* next change row */