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lavfi: do not use av_pix_fmt_descriptors directly.

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This commit is contained in:
Anton Khirnov 2012-10-06 13:29:37 +02:00
parent 50ba57e0ce
commit 59ee9f78b0
29 changed files with 76 additions and 61 deletions
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2
libavfilter/avfilter.c
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@ -214,7 +214,7 @@ void ff_dlog_link(void *ctx, AVFilterLink *link, int end)
av_dlog(ctx,
"link[%p s:%dx%d fmt:%-16s %-16s->%-16s]%s",
link, link->w, link->h,
av_pix_fmt_descriptors[link->format].name,
av_get_pix_fmt_name(link->format),
link->src ? link->src->filter->name : "",
link->dst ? link->dst->filter->name : "",
end ? "\n" : "");

2
libavfilter/buffersrc.c
View File

@ -185,7 +185,7 @@ static av_cold int init_video(AVFilterContext *ctx, const char *args)
if (!(c->fifo = av_fifo_alloc(sizeof(AVFilterBufferRef*))))
return AVERROR(ENOMEM);
av_log(ctx, AV_LOG_VERBOSE, "w:%d h:%d pixfmt:%s\n", c->w, c->h, av_pix_fmt_descriptors[c->pix_fmt].name);
av_log(ctx, AV_LOG_VERBOSE, "w:%d h:%d pixfmt:%s\n", c->w, c->h, av_get_pix_fmt_name(c->pix_fmt));
return 0;
}

2
libavfilter/drawutils.c
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@ -32,7 +32,7 @@ int ff_fill_line_with_color(uint8_t *line[4], int pixel_step[4], int w, uint8_t
{
uint8_t rgba_map[4] = {0};
int i;
const AVPixFmtDescriptor *pix_desc = &av_pix_fmt_descriptors[pix_fmt];
const AVPixFmtDescriptor *pix_desc = av_pix_fmt_desc_get(pix_fmt);
int hsub = pix_desc->log2_chroma_w;
*is_packed_rgba = 1;

4
libavfilter/filtfmts.c
View File

@ -89,7 +89,7 @@ int main(int argc, char **argv)
for (j = 0; j < fmts->format_count; j++)
printf("INPUT[%d] %s: %s\n",
i, filter_ctx->filter->inputs[i].name,
av_pix_fmt_descriptors[fmts->formats[j]].name);
av_get_pix_fmt_name(fmts->formats[j]));
}
/* print the supported formats in output */
@ -98,7 +98,7 @@ int main(int argc, char **argv)
for (j = 0; j < fmts->format_count; j++)
printf("OUTPUT[%d] %s: %s\n",
i, filter_ctx->filter->outputs[i].name,
av_pix_fmt_descriptors[fmts->formats[j]].name);
av_get_pix_fmt_name(fmts->formats[j]));
}
avfilter_free(filter_ctx);

6
libavfilter/formats.c
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@ -213,10 +213,12 @@ AVFilterFormats *ff_all_formats(enum AVMediaType type)
int num_formats = type == AVMEDIA_TYPE_VIDEO ? AV_PIX_FMT_NB :
type == AVMEDIA_TYPE_AUDIO ? AV_SAMPLE_FMT_NB : 0;
for (fmt = 0; fmt < num_formats; fmt++)
for (fmt = 0; fmt < num_formats; fmt++) {
const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(fmt);
if ((type != AVMEDIA_TYPE_VIDEO) ||
(type == AVMEDIA_TYPE_VIDEO && !(av_pix_fmt_descriptors[fmt].flags & PIX_FMT_HWACCEL)))
(type == AVMEDIA_TYPE_VIDEO && !(desc->flags & PIX_FMT_HWACCEL)))
ff_add_format(&ret, fmt);
}
return ret;
}

2
libavfilter/vf_boxblur.c
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@ -139,7 +139,7 @@ static int query_formats(AVFilterContext *ctx)
static int config_input(AVFilterLink *inlink)
{
const AVPixFmtDescriptor *desc = &av_pix_fmt_descriptors[inlink->format];
const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format);
AVFilterContext *ctx = inlink->dst;
BoxBlurContext *boxblur = ctx->priv;
int w = inlink->w, h = inlink->h;

10
libavfilter/vf_crop.c
View File

@ -158,7 +158,7 @@ static int config_input(AVFilterLink *link)
{
AVFilterContext *ctx = link->dst;
CropContext *crop = ctx->priv;
const AVPixFmtDescriptor *pix_desc = &av_pix_fmt_descriptors[link->format];
const AVPixFmtDescriptor *pix_desc = av_pix_fmt_desc_get(link->format);
int ret;
const char *expr;
double res;
@ -177,8 +177,8 @@ static int config_input(AVFilterLink *link)
crop->var_values[VAR_POS] = NAN;
av_image_fill_max_pixsteps(crop->max_step, NULL, pix_desc);
crop->hsub = av_pix_fmt_descriptors[link->format].log2_chroma_w;
crop->vsub = av_pix_fmt_descriptors[link->format].log2_chroma_h;
crop->hsub = pix_desc->log2_chroma_w;
crop->vsub = pix_desc->log2_chroma_h;
if ((ret = av_expr_parse_and_eval(&res, (expr = crop->ow_expr),
var_names, crop->var_values,
@ -248,6 +248,7 @@ static int start_frame(AVFilterLink *link, AVFilterBufferRef *picref)
AVFilterContext *ctx = link->dst;
CropContext *crop = ctx->priv;
AVFilterBufferRef *ref2;
const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(link->format);
int i;
ref2 = avfilter_ref_buffer(picref, ~0);
@ -281,8 +282,7 @@ static int start_frame(AVFilterLink *link, AVFilterBufferRef *picref)
ref2->data[0] += crop->y * ref2->linesize[0];
ref2->data[0] += crop->x * crop->max_step[0];
if (!(av_pix_fmt_descriptors[link->format].flags & PIX_FMT_PAL ||
av_pix_fmt_descriptors[link->format].flags & PIX_FMT_PSEUDOPAL)) {
if (!(desc->flags & PIX_FMT_PAL || desc->flags & PIX_FMT_PSEUDOPAL)) {
for (i = 1; i < 3; i ++) {
if (ref2->data[i]) {
ref2->data[i] += (crop->y >> crop->vsub) * ref2->linesize[i];

2
libavfilter/vf_cropdetect.c
View File

@ -107,7 +107,7 @@ static int config_input(AVFilterLink *inlink)
CropDetectContext *cd = ctx->priv;
av_image_fill_max_pixsteps(cd->max_pixsteps, NULL,
&av_pix_fmt_descriptors[inlink->format]);
av_pix_fmt_desc_get(inlink->format));
cd->x1 = inlink->w - 1;
cd->y1 = inlink->h - 1;

5
libavfilter/vf_delogo.c
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@ -226,9 +226,10 @@ static int end_frame(AVFilterLink *inlink)
AVFilterLink *outlink = inlink->dst->outputs[0];
AVFilterBufferRef *inpicref = inlink ->cur_buf;
AVFilterBufferRef *outpicref = outlink->out_buf;
const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format);
int direct = inpicref->buf == outpicref->buf;
int hsub0 = av_pix_fmt_descriptors[inlink->format].log2_chroma_w;
int vsub0 = av_pix_fmt_descriptors[inlink->format].log2_chroma_h;
int hsub0 = desc->log2_chroma_w;
int vsub0 = desc->log2_chroma_h;
int plane;
int ret;

5
libavfilter/vf_drawbox.c
View File

@ -81,9 +81,10 @@ static int query_formats(AVFilterContext *ctx)
static int config_input(AVFilterLink *inlink)
{
DrawBoxContext *drawbox = inlink->dst->priv;
const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format);
drawbox->hsub = av_pix_fmt_descriptors[inlink->format].log2_chroma_w;
drawbox->vsub = av_pix_fmt_descriptors[inlink->format].log2_chroma_h;
drawbox->hsub = desc->log2_chroma_w;
drawbox->vsub = desc->log2_chroma_h;
if (drawbox->w == 0) drawbox->w = inlink->w;
if (drawbox->h == 0) drawbox->h = inlink->h;

2
libavfilter/vf_drawtext.c
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@ -569,7 +569,7 @@ static int config_input(AVFilterLink *inlink)
{
AVFilterContext *ctx = inlink->dst;
DrawTextContext *dtext = ctx->priv;
const AVPixFmtDescriptor *pix_desc = &av_pix_fmt_descriptors[inlink->format];
const AVPixFmtDescriptor *pix_desc = av_pix_fmt_desc_get(inlink->format);
int ret;
dtext->hsub = pix_desc->log2_chroma_w;

2
libavfilter/vf_fade.c
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@ -89,7 +89,7 @@ static int query_formats(AVFilterContext *ctx)
static int config_props(AVFilterLink *inlink)
{
FadeContext *fade = inlink->dst->priv;
const AVPixFmtDescriptor *pixdesc = &av_pix_fmt_descriptors[inlink->format];
const AVPixFmtDescriptor *pixdesc = av_pix_fmt_desc_get(inlink->format);
fade->hsub = pixdesc->log2_chroma_w;
fade->vsub = pixdesc->log2_chroma_h;

13
libavfilter/vf_fieldorder.c
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@ -78,15 +78,16 @@ static int query_formats(AVFilterContext *ctx)
* a bitstream format, and does not have vertically sub-sampled chroma */
if (ctx->inputs[0]) {
formats = NULL;
for (pix_fmt = 0; pix_fmt < AV_PIX_FMT_NB; pix_fmt++)
if (!( av_pix_fmt_descriptors[pix_fmt].flags & PIX_FMT_HWACCEL
|| av_pix_fmt_descriptors[pix_fmt].flags & PIX_FMT_BITSTREAM)
&& av_pix_fmt_descriptors[pix_fmt].nb_components
&& !av_pix_fmt_descriptors[pix_fmt].log2_chroma_h
&& (ret = ff_add_format(&formats, pix_fmt)) < 0) {
for (pix_fmt = 0; pix_fmt < AV_PIX_FMT_NB; pix_fmt++) {
const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
if (!(desc->flags & PIX_FMT_HWACCEL ||
desc->flags & PIX_FMT_BITSTREAM) &&
desc->nb_components && !desc->log2_chroma_h &&
(ret = ff_add_format(&formats, pix_fmt)) < 0) {
ff_formats_unref(&formats);
return ret;
}
}
ff_formats_ref(formats, &ctx->inputs[0]->out_formats);
ff_formats_ref(formats, &ctx->outputs[0]->in_formats);
}

5
libavfilter/vf_gradfun.c
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@ -167,8 +167,9 @@ static int query_formats(AVFilterContext *ctx)
static int config_input(AVFilterLink *inlink)
{
GradFunContext *gf = inlink->dst->priv;
int hsub = av_pix_fmt_descriptors[inlink->format].log2_chroma_w;
int vsub = av_pix_fmt_descriptors[inlink->format].log2_chroma_h;
const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format);
int hsub = desc->log2_chroma_w;
int vsub = desc->log2_chroma_h;
gf->buf = av_mallocz((FFALIGN(inlink->w, 16) * (gf->radius + 1) / 2 + 32) * sizeof(uint16_t));
if (!gf->buf)

6
libavfilter/vf_hflip.c
View File

@ -75,11 +75,11 @@ static int query_formats(AVFilterContext *ctx)
static int config_props(AVFilterLink *inlink)
{
FlipContext *flip = inlink->dst->priv;
const AVPixFmtDescriptor *pix_desc = &av_pix_fmt_descriptors[inlink->format];
const AVPixFmtDescriptor *pix_desc = av_pix_fmt_desc_get(inlink->format);
av_image_fill_max_pixsteps(flip->max_step, NULL, pix_desc);
flip->hsub = av_pix_fmt_descriptors[inlink->format].log2_chroma_w;
flip->vsub = av_pix_fmt_descriptors[inlink->format].log2_chroma_h;
flip->hsub = pix_desc->log2_chroma_w;
flip->vsub = pix_desc->log2_chroma_h;
return 0;
}

7
libavfilter/vf_hqdn3d.c
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@ -295,11 +295,12 @@ static int query_formats(AVFilterContext *ctx)
static int config_input(AVFilterLink *inlink)
{
HQDN3DContext *hqdn3d = inlink->dst->priv;
const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format);
int i;
hqdn3d->hsub = av_pix_fmt_descriptors[inlink->format].log2_chroma_w;
hqdn3d->vsub = av_pix_fmt_descriptors[inlink->format].log2_chroma_h;
hqdn3d->depth = av_pix_fmt_descriptors[inlink->format].comp[0].depth_minus1+1;
hqdn3d->hsub = desc->log2_chroma_w;
hqdn3d->vsub = desc->log2_chroma_h;
hqdn3d->depth = desc->comp[0].depth_minus1+1;
hqdn3d->line = av_malloc(inlink->w * sizeof(*hqdn3d->line));
if (!hqdn3d->line)

2
libavfilter/vf_lut.c
View File

@ -212,7 +212,7 @@ static int config_props(AVFilterLink *inlink)
{
AVFilterContext *ctx = inlink->dst;
LutContext *lut = ctx->priv;
const AVPixFmtDescriptor *desc = &av_pix_fmt_descriptors[inlink->format];
const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format);
int min[4], max[4];
int val, comp, ret;

6
libavfilter/vf_overlay.c
View File

@ -113,7 +113,7 @@ static int query_formats(AVFilterContext *ctx)
static int config_input_main(AVFilterLink *inlink)
{
OverlayContext *over = inlink->dst->priv;
const AVPixFmtDescriptor *pix_desc = &av_pix_fmt_descriptors[inlink->format];
const AVPixFmtDescriptor *pix_desc = av_pix_fmt_desc_get(inlink->format);
av_image_fill_max_pixsteps(over->max_plane_step, NULL, pix_desc);
over->hsub = pix_desc->log2_chroma_w;
@ -158,10 +158,10 @@ static int config_input_overlay(AVFilterLink *inlink)
av_log(ctx, AV_LOG_VERBOSE,
"main w:%d h:%d fmt:%s overlay x:%d y:%d w:%d h:%d fmt:%s\n",
ctx->inputs[MAIN]->w, ctx->inputs[MAIN]->h,
av_pix_fmt_descriptors[ctx->inputs[MAIN]->format].name,
av_get_pix_fmt_name(ctx->inputs[MAIN]->format),
over->x, over->y,
ctx->inputs[OVERLAY]->w, ctx->inputs[OVERLAY]->h,
av_pix_fmt_descriptors[ctx->inputs[OVERLAY]->format].name);
av_get_pix_fmt_name(ctx->inputs[OVERLAY]->format));
if (over->x < 0 || over->y < 0 ||
over->x + var_values[VAR_OVERLAY_W] > var_values[VAR_MAIN_W] ||

2
libavfilter/vf_pad.c
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@ -144,7 +144,7 @@ static int config_input(AVFilterLink *inlink)
{
AVFilterContext *ctx = inlink->dst;
PadContext *pad = ctx->priv;
const AVPixFmtDescriptor *pix_desc = &av_pix_fmt_descriptors[inlink->format];
const AVPixFmtDescriptor *pix_desc = av_pix_fmt_desc_get(inlink->format);
uint8_t rgba_color[4];
int ret, is_packed_rgba;
double var_values[VARS_NB], res;

2
libavfilter/vf_pixdesctest.c
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@ -44,7 +44,7 @@ static int config_props(AVFilterLink *inlink)
{
PixdescTestContext *priv = inlink->dst->priv;
priv->pix_desc = &av_pix_fmt_descriptors[inlink->format];
priv->pix_desc = av_pix_fmt_desc_get(inlink->format);
if (!(priv->line = av_malloc(sizeof(*priv->line) * inlink->w)))
return AVERROR(ENOMEM);

18
libavfilter/vf_scale.c
View File

@ -155,6 +155,7 @@ static int config_props(AVFilterLink *outlink)
AVFilterContext *ctx = outlink->src;
AVFilterLink *inlink = outlink->src->inputs[0];
ScaleContext *scale = ctx->priv;
const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format);
int64_t w, h;
double var_values[VARS_NB], res;
char *expr;
@ -170,8 +171,8 @@ static int config_props(AVFilterLink *outlink)
var_values[VAR_DAR] = var_values[VAR_A] = (double) inlink->w / inlink->h;
var_values[VAR_SAR] = inlink->sample_aspect_ratio.num ?
(double) inlink->sample_aspect_ratio.num / inlink->sample_aspect_ratio.den : 1;
var_values[VAR_HSUB] = 1<<av_pix_fmt_descriptors[inlink->format].log2_chroma_w;
var_values[VAR_VSUB] = 1<<av_pix_fmt_descriptors[inlink->format].log2_chroma_h;
var_values[VAR_HSUB] = 1 << desc->log2_chroma_w;
var_values[VAR_VSUB] = 1 << desc->log2_chroma_h;
/* evaluate width and height */
av_expr_parse_and_eval(&res, (expr = scale->w_expr),
@ -220,12 +221,12 @@ static int config_props(AVFilterLink *outlink)
/* TODO: make algorithm configurable */
av_log(ctx, AV_LOG_VERBOSE, "w:%d h:%d fmt:%s -> w:%d h:%d fmt:%s flags:0x%0x\n",
inlink ->w, inlink ->h, av_pix_fmt_descriptors[ inlink->format].name,
outlink->w, outlink->h, av_pix_fmt_descriptors[outlink->format].name,
inlink ->w, inlink ->h, av_get_pix_fmt_name(inlink->format),
outlink->w, outlink->h, av_get_pix_fmt_name(outlink->format),
scale->flags);
scale->input_is_pal = av_pix_fmt_descriptors[inlink->format].flags & PIX_FMT_PAL ||
av_pix_fmt_descriptors[inlink->format].flags & PIX_FMT_PSEUDOPAL;
scale->input_is_pal = desc->flags & PIX_FMT_PAL ||
desc->flags & PIX_FMT_PSEUDOPAL;
if (scale->sws)
sws_freeContext(scale->sws);
@ -261,6 +262,7 @@ static int start_frame(AVFilterLink *link, AVFilterBufferRef *picref)
ScaleContext *scale = link->dst->priv;
AVFilterLink *outlink = link->dst->outputs[0];
AVFilterBufferRef *outpicref, *for_next_filter;
const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(link->format);
int ret = 0;
if (!scale->sws) {
@ -270,8 +272,8 @@ static int start_frame(AVFilterLink *link, AVFilterBufferRef *picref)
return ff_start_frame(outlink, outpicref);
}
scale->hsub = av_pix_fmt_descriptors[link->format].log2_chroma_w;
scale->vsub = av_pix_fmt_descriptors[link->format].log2_chroma_h;
scale->hsub = desc->log2_chroma_w;
scale->vsub = desc->log2_chroma_h;
outpicref = ff_get_video_buffer(outlink, AV_PERM_WRITE, outlink->w, outlink->h);
if (!outpicref)

5
libavfilter/vf_showinfo.c
View File

@ -46,8 +46,9 @@ static int end_frame(AVFilterLink *inlink)
AVFilterContext *ctx = inlink->dst;
ShowInfoContext *showinfo = ctx->priv;
AVFilterBufferRef *picref = inlink->cur_buf;
const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format);
uint32_t plane_checksum[4] = {0}, checksum = 0;
int i, plane, vsub = av_pix_fmt_descriptors[inlink->format].log2_chroma_h;
int i, plane, vsub = desc->log2_chroma_h;
for (plane = 0; picref->data[plane] && plane < 4; plane++) {
size_t linesize = av_image_get_linesize(picref->format, picref->video->w, plane);
@ -67,7 +68,7 @@ static int end_frame(AVFilterLink *inlink)
"checksum:%u plane_checksum:[%u %u %u %u]\n",
showinfo->frame,
picref->pts, picref->pts * av_q2d(inlink->time_base), picref->pos,
av_pix_fmt_descriptors[picref->format].name,
desc->name,
picref->video->pixel_aspect.num, picref->video->pixel_aspect.den,
picref->video->w, picref->video->h,
!picref->video->interlaced ? 'P' : /* Progressive */

3
libavfilter/vf_slicify.c
View File

@ -54,8 +54,9 @@ static av_cold int init(AVFilterContext *ctx, const char *args)
static int config_props(AVFilterLink *link)
{
SliceContext *slice = link->dst->priv;
const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(link->format);
slice->vshift = av_pix_fmt_descriptors[link->format].log2_chroma_h;
slice->vshift = desc->log2_chroma_h;
return 0;
}

9
libavfilter/vf_transpose.c
View File

@ -98,12 +98,13 @@ static int config_props_output(AVFilterLink *outlink)
AVFilterContext *ctx = outlink->src;
TransContext *trans = ctx->priv;
AVFilterLink *inlink = ctx->inputs[0];
const AVPixFmtDescriptor *pixdesc = &av_pix_fmt_descriptors[outlink->format];
const AVPixFmtDescriptor *desc_out = av_pix_fmt_desc_get(outlink->format);
const AVPixFmtDescriptor *desc_in = av_pix_fmt_desc_get(inlink->format);
trans->hsub = av_pix_fmt_descriptors[inlink->format].log2_chroma_w;
trans->vsub = av_pix_fmt_descriptors[inlink->format].log2_chroma_h;
trans->hsub = desc_in->log2_chroma_w;
trans->vsub = desc_in->log2_chroma_h;
av_image_fill_max_pixsteps(trans->pixsteps, NULL, pixdesc);
av_image_fill_max_pixsteps(trans->pixsteps, NULL, desc_out);
outlink->w = inlink->h;
outlink->h = inlink->w;

5
libavfilter/vf_unsharp.c
View File

@ -187,9 +187,10 @@ static void init_filter_param(AVFilterContext *ctx, FilterParam *fp, const char
static int config_props(AVFilterLink *link)
{
UnsharpContext *unsharp = link->dst->priv;
const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(link->format);
unsharp->hsub = av_pix_fmt_descriptors[link->format].log2_chroma_w;
unsharp->vsub = av_pix_fmt_descriptors[link->format].log2_chroma_h;
unsharp->hsub = desc->log2_chroma_w;
unsharp->vsub = desc->log2_chroma_h;
init_filter_param(link->dst, &unsharp->luma, "luma", link->w);
init_filter_param(link->dst, &unsharp->chroma, "chroma", SHIFTUP(link->w, unsharp->hsub));

3
libavfilter/vf_vflip.c
View File

@ -36,8 +36,9 @@ typedef struct {
static int config_input(AVFilterLink *link)
{
FlipContext *flip = link->dst->priv;
const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(link->format);
flip->vsub = av_pix_fmt_descriptors[link->format].log2_chroma_h;
flip->vsub = desc->log2_chroma_h;
return 0;
}

2
libavfilter/vf_yadif.c
View File

@ -187,7 +187,7 @@ static int return_frame(AVFilterContext *ctx, int is_second)
}
if (!yadif->csp)
yadif->csp = &av_pix_fmt_descriptors[link->format];
yadif->csp = av_pix_fmt_desc_get(link->format);
if (yadif->csp->comp[0].depth_minus1 / 8 == 1)
yadif->filter_line = filter_line_c_16bit;

3
libavfilter/video.c
View File

@ -339,7 +339,8 @@ int ff_draw_slice(AVFilterLink *link, int y, int h, int slice_dir)
/* copy the slice if needed for permission reasons */
if (link->src_buf) {
vsub = av_pix_fmt_descriptors[link->format].log2_chroma_h;
const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(link->format);
vsub = desc->log2_chroma_h;
for (i = 0; i < 4; i++) {
if (link->src_buf->data[i]) {

2
libavfilter/vsrc_color.c
View File

@ -118,7 +118,7 @@ static int color_config_props(AVFilterLink *inlink)
ColorContext *color = ctx->priv;
uint8_t rgba_color[4];
int is_packed_rgba;
const AVPixFmtDescriptor *pix_desc = &av_pix_fmt_descriptors[inlink->format];
const AVPixFmtDescriptor *pix_desc = av_pix_fmt_desc_get(inlink->format);
color->hsub = pix_desc->log2_chroma_w;
color->vsub = pix_desc->log2_chroma_h;