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avcodec/vp6: Avoid code duplication when initializing VP56 contexts 

Reviewed-by: Peter Ross <pross@xvid.org>
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
This commit is contained in:
Andreas Rheinhardt 2022-02-11 08:53:06 +01:00
parent 3cbef22f8f
commit ac9f8d7c02
1 changed files with 31 additions and 28 deletions
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59
libavcodec/vp6.c
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@ -637,36 +637,15 @@ static void vp6_filter(VP56Context *s, uint8_t *dst, uint8_t *src,
}
}
static av_cold void vp6_decode_init_context(VP56Context *s);
static av_cold int vp6_decode_init(AVCodecContext *avctx)
static av_cold int vp6_decode_init_context(AVCodecContext *avctx,
VP56Context *s, int flip, int has_alpha)
{
VP56Context *s = avctx->priv_data;
int ret;
if ((ret = ff_vp56_init(avctx, avctx->codec->id == AV_CODEC_ID_VP6,
avctx->codec->id == AV_CODEC_ID_VP6A)) < 0)
int ret = ff_vp56_init_context(avctx, s, flip, has_alpha);
if (ret < 0)
return ret;
ff_vp6dsp_init(&s->vp56dsp);
vp6_decode_init_context(s);
if (s->has_alpha) {
/* Can only happen for ff_vp6a_decoder */
s->alpha_context = &s[1];
ret = ff_vp56_init_context(avctx, s->alpha_context,
s->flip == -1, s->has_alpha);
if (ret < 0)
return ret;
ff_vp6dsp_init(&s->alpha_context->vp56dsp);
vp6_decode_init_context(s->alpha_context);
}
return 0;
}
static av_cold void vp6_decode_init_context(VP56Context *s)
{
s->deblock_filtering = 0;
s->vp56_coord_div = vp6_coord_div;
s->parse_vector_adjustment = vp6_parse_vector_adjustment;
@ -675,6 +654,30 @@ static av_cold void vp6_decode_init_context(VP56Context *s)
s->parse_vector_models = vp6_parse_vector_models;
s->parse_coeff_models = vp6_parse_coeff_models;
s->parse_header = vp6_parse_header;
return 0;
}
static av_cold int vp6_decode_init(AVCodecContext *avctx)
{
VP56Context *s = avctx->priv_data;
int ret;
ret = vp6_decode_init_context(avctx, s, avctx->codec_id == AV_CODEC_ID_VP6,
avctx->codec_id == AV_CODEC_ID_VP6A);
if (ret < 0)
return ret;
if (s->has_alpha) {
/* Can only happen for ff_vp6a_decoder */
s->alpha_context = &s[1];
ret = vp6_decode_init_context(avctx, s->alpha_context,
s->flip == -1, s->has_alpha);
if (ret < 0)
return ret;
}
return 0;
}
static av_cold void vp6_decode_free_context(VP56Context *s);
@ -683,11 +686,9 @@ static av_cold int vp6_decode_free(AVCodecContext *avctx)
{
VP56Context *s = avctx->priv_data;
ff_vp56_free(avctx);
vp6_decode_free_context(s);
if (s->alpha_context) {
ff_vp56_free_context(s->alpha_context);
vp6_decode_free_context(s->alpha_context);
s->alpha_context = NULL;
}
@ -699,6 +700,8 @@ static av_cold void vp6_decode_free_context(VP56Context *s)
{
int pt, ct, cg;
ff_vp56_free_context(s);
for (pt=0; pt<2; pt++) {
ff_free_vlc(&s->dccv_vlc[pt]);
ff_free_vlc(&s->runv_vlc[pt]);