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Code Issues Releases Activity

avcodec/mpeg4videodec: Use stack variable for aspect_ratio_info

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Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
This commit is contained in:
Andreas Rheinhardt
2022-01-25 13:25:42 +01:00
parent 9288b6366b
commit 30dfd87da1
1 changed files with 8 additions and 8 deletions
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16
libavcodec/mpeg4videodec.c
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@ -2215,7 +2215,7 @@ static void extension_and_user_data(MpegEncContext *s, GetBitContext *gb, int id
static int decode_studio_vol_header(Mpeg4DecContext *ctx, GetBitContext *gb) static int decode_studio_vol_header(Mpeg4DecContext *ctx, GetBitContext *gb)
{ {
MpegEncContext *s = &ctx->m; MpegEncContext *s = &ctx->m;
int width, height; int width, height, aspect_ratio_info;
int bits_per_raw_sample; int bits_per_raw_sample;
int rgb, chroma_format; int rgb, chroma_format;
@ -2270,12 +2270,12 @@ static int decode_studio_vol_header(Mpeg4DecContext *ctx, GetBitContext *gb)
s->height = height; s->height = height;
} }
} }
s->aspect_ratio_info = get_bits(gb, 4); aspect_ratio_info = get_bits(gb, 4);
if (s->aspect_ratio_info == FF_ASPECT_EXTENDED) { if (aspect_ratio_info == FF_ASPECT_EXTENDED) {
s->avctx->sample_aspect_ratio.num = get_bits(gb, 8); // par_width s->avctx->sample_aspect_ratio.num = get_bits(gb, 8); // par_width
s->avctx->sample_aspect_ratio.den = get_bits(gb, 8); // par_height s->avctx->sample_aspect_ratio.den = get_bits(gb, 8); // par_height
} else { } else {
s->avctx->sample_aspect_ratio = ff_h263_pixel_aspect[s->aspect_ratio_info]; s->avctx->sample_aspect_ratio = ff_h263_pixel_aspect[aspect_ratio_info];
} }
skip_bits(gb, 4); /* frame_rate_code */ skip_bits(gb, 4); /* frame_rate_code */
skip_bits(gb, 15); /* first_half_bit_rate */ skip_bits(gb, 15); /* first_half_bit_rate */
@ -2301,7 +2301,7 @@ static int decode_studio_vol_header(Mpeg4DecContext *ctx, GetBitContext *gb)
static int decode_vol_header(Mpeg4DecContext *ctx, GetBitContext *gb) static int decode_vol_header(Mpeg4DecContext *ctx, GetBitContext *gb)
{ {
MpegEncContext *s = &ctx->m; MpegEncContext *s = &ctx->m;
int width, height, vo_ver_id; int width, height, vo_ver_id, aspect_ratio_info;
/* vol header */ /* vol header */
skip_bits(gb, 1); /* random access */ skip_bits(gb, 1); /* random access */
@ -2329,12 +2329,12 @@ static int decode_vol_header(Mpeg4DecContext *ctx, GetBitContext *gb)
} else { } else {
vo_ver_id = 1; vo_ver_id = 1;
} }
s->aspect_ratio_info = get_bits(gb, 4); aspect_ratio_info = get_bits(gb, 4);
if (s->aspect_ratio_info == FF_ASPECT_EXTENDED) { if (aspect_ratio_info == FF_ASPECT_EXTENDED) {
s->avctx->sample_aspect_ratio.num = get_bits(gb, 8); // par_width s->avctx->sample_aspect_ratio.num = get_bits(gb, 8); // par_width
s->avctx->sample_aspect_ratio.den = get_bits(gb, 8); // par_height s->avctx->sample_aspect_ratio.den = get_bits(gb, 8); // par_height
} else { } else {
s->avctx->sample_aspect_ratio = ff_h263_pixel_aspect[s->aspect_ratio_info]; s->avctx->sample_aspect_ratio = ff_h263_pixel_aspect[aspect_ratio_info];
} }
if ((ctx->vol_control_parameters = get_bits1(gb))) { /* vol control parameter */ if ((ctx->vol_control_parameters = get_bits1(gb))) { /* vol control parameter */