*/
#include "avfilter.h"
+#include "formats.h"
+#include "internal.h"
+#include "video.h"
#include "libavutil/avstring.h"
+#include "libavutil/common.h"
#include "libavutil/eval.h"
#include "libavutil/pixdesc.h"
#include "libavutil/colorspace.h"
#include "libavutil/mathematics.h"
#include "drawutils.h"
-static const char *var_names[] = {
+static const char *const var_names[] = {
"PI",
"PHI",
"E",
static int query_formats(AVFilterContext *ctx)
{
- static const enum PixelFormat pix_fmts[] = {
- PIX_FMT_ARGB, PIX_FMT_RGBA,
- PIX_FMT_ABGR, PIX_FMT_BGRA,
- PIX_FMT_RGB24, PIX_FMT_BGR24,
-
- PIX_FMT_YUV444P, PIX_FMT_YUV422P,
- PIX_FMT_YUV420P, PIX_FMT_YUV411P,
- PIX_FMT_YUV410P, PIX_FMT_YUV440P,
- PIX_FMT_YUVJ444P, PIX_FMT_YUVJ422P,
- PIX_FMT_YUVJ420P, PIX_FMT_YUVJ440P,
- PIX_FMT_YUVA420P,
-
- PIX_FMT_NONE
+ static const enum AVPixelFormat pix_fmts[] = {
+ AV_PIX_FMT_ARGB, AV_PIX_FMT_RGBA,
+ AV_PIX_FMT_ABGR, AV_PIX_FMT_BGRA,
+ AV_PIX_FMT_RGB24, AV_PIX_FMT_BGR24,
+
+ AV_PIX_FMT_YUV444P, AV_PIX_FMT_YUV422P,
+ AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUV411P,
+ AV_PIX_FMT_YUV410P, AV_PIX_FMT_YUV440P,
+ AV_PIX_FMT_YUVJ444P, AV_PIX_FMT_YUVJ422P,
+ AV_PIX_FMT_YUVJ420P, AV_PIX_FMT_YUVJ440P,
+ AV_PIX_FMT_YUVA420P,
+
+ AV_PIX_FMT_NONE
};
- avfilter_set_common_formats(ctx, avfilter_make_format_list(pix_fmts));
+ ff_set_common_formats(ctx, ff_make_format_list(pix_fmts));
return 0;
}
uint8_t *line[4];
int line_step[4];
int hsub, vsub; ///< chroma subsampling values
- int needs_copy;
} PadContext;
-static av_cold int init(AVFilterContext *ctx, const char *args, void *opaque)
+static av_cold int init(AVFilterContext *ctx, const char *args)
{
PadContext *pad = ctx->priv;
char color_string[128] = "black";
{
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;
var_values[VAR_IN_H] = var_values[VAR_IH] = inlink->h;
var_values[VAR_OUT_W] = var_values[VAR_OW] = NAN;
var_values[VAR_OUT_H] = var_values[VAR_OH] = NAN;
- var_values[VAR_A] = (float) inlink->w / inlink->h;
+ var_values[VAR_A] = (double) inlink->w / inlink->h;
var_values[VAR_HSUB] = 1<<pad->hsub;
var_values[VAR_VSUB] = 1<<pad->vsub;
ff_fill_line_with_color(pad->line, pad->line_step, pad->w, pad->color,
inlink->format, rgba_color, &is_packed_rgba, NULL);
- av_log(ctx, AV_LOG_INFO, "w:%d h:%d -> w:%d h:%d x:%d y:%d color:0x%02X%02X%02X%02X[%s]\n",
+ av_log(ctx, AV_LOG_VERBOSE, "w:%d h:%d -> w:%d h:%d x:%d y:%d color:0x%02X%02X%02X%02X[%s]\n",
inlink->w, inlink->h, pad->w, pad->h, pad->x, pad->y,
pad->color[0], pad->color[1], pad->color[2], pad->color[3],
is_packed_rgba ? "rgba" : "yuva");
return 0;
}
-static AVFilterBufferRef *get_video_buffer(AVFilterLink *inlink, int perms, int w, int h)
+static AVFrame *get_video_buffer(AVFilterLink *inlink, int w, int h)
{
PadContext *pad = inlink->dst->priv;
- AVFilterBufferRef *picref = avfilter_get_video_buffer(inlink->dst->outputs[0], perms,
- w + (pad->w - pad->in_w),
- h + (pad->h - pad->in_h));
+ AVFrame *frame = ff_get_video_buffer(inlink->dst->outputs[0],
+ w + (pad->w - pad->in_w),
+ h + (pad->h - pad->in_h));
int plane;
- picref->video->w = w;
- picref->video->h = h;
+ if (!frame)
+ return NULL;
- for (plane = 0; plane < 4 && picref->data[plane]; plane++) {
+ frame->width = w;
+ frame->height = h;
+
+ for (plane = 0; plane < 4 && frame->data[plane]; plane++) {
int hsub = (plane == 1 || plane == 2) ? pad->hsub : 0;
int vsub = (plane == 1 || plane == 2) ? pad->vsub : 0;
- picref->data[plane] += (pad->x >> hsub) * pad->line_step[plane] +
- (pad->y >> vsub) * picref->linesize[plane];
+ frame->data[plane] += (pad->x >> hsub) * pad->line_step[plane] +
+ (pad->y >> vsub) * frame->linesize[plane];
}
- return picref;
+ return frame;
}
-static int does_clip(PadContext *pad, AVFilterBufferRef *outpicref, int plane, int hsub, int vsub, int x, int y)
+/* check whether each plane in this buffer can be padded without copying */
+static int buffer_needs_copy(PadContext *s, AVFrame *frame, AVBufferRef *buf)
{
- int64_t x_in_buf, y_in_buf;
+ int planes[4] = { -1, -1, -1, -1}, *p = planes;
+ int i, j;
- x_in_buf = outpicref->data[plane] - outpicref->buf->data[plane]
- + (x >> hsub) * pad ->line_step[plane]
- + (y >> vsub) * outpicref->linesize [plane];
+ /* get all planes in this buffer */
+ for (i = 0; i < FF_ARRAY_ELEMS(planes) && frame->data[i]; i++) {
+ if (av_frame_get_plane_buffer(frame, i) == buf)
+ *p++ = i;
+ }
- if(x_in_buf < 0 || x_in_buf % pad->line_step[plane])
- return 1;
- x_in_buf /= pad->line_step[plane];
+ /* for each plane in this buffer, check that it can be padded without
+ * going over buffer bounds or other planes */
+ for (i = 0; i < FF_ARRAY_ELEMS(planes) && planes[i] >= 0; i++) {
+ int hsub = (planes[i] == 1 || planes[i] == 2) ? s->hsub : 0;
+ int vsub = (planes[i] == 1 || planes[i] == 2) ? s->vsub : 0;
+
+ uint8_t *start = frame->data[planes[i]];
+ uint8_t *end = start + (frame->height >> hsub) *
+ frame->linesize[planes[i]];
+
+ /* amount of free space needed before the start and after the end
+ * of the plane */
+ ptrdiff_t req_start = (s->x >> hsub) * s->line_step[planes[i]] +
+ (s->y >> vsub) * frame->linesize[planes[i]];
+ ptrdiff_t req_end = ((s->w - s->x - frame->width) >> hsub) *
+ s->line_step[planes[i]] +
+ (s->y >> vsub) * frame->linesize[planes[i]];
+
+ if (frame->linesize[planes[i]] < (s->w >> hsub) * s->line_step[planes[i]])
+ return 1;
+ if (start - buf->data < req_start ||
+ (buf->data + buf->size) - end < req_end)
+ return 1;
+
+#define SIGN(x) ((x) > 0 ? 1 : -1)
+ for (j = 0; j < FF_ARRAY_ELEMS(planes) && planes[j] >= 0; j++) {
+ int hsub1 = (planes[j] == 1 || planes[j] == 2) ? s->hsub : 0;
+ uint8_t *start1 = frame->data[planes[j]];
+ uint8_t *end1 = start1 + (frame->height >> hsub1) *
+ frame->linesize[planes[j]];
+ if (i == j)
+ continue;
+
+ if (SIGN(start - end1) != SIGN(start - end1 - req_start) ||
+ SIGN(end - start1) != SIGN(end - start1 + req_end))
+ return 1;
+ }
+ }
- av_assert0(outpicref->buf->linesize[plane]>0); //while reference can use negative linesize the main buffer should not
+ return 0;
+}
- y_in_buf = x_in_buf / outpicref->buf->linesize[plane];
- x_in_buf %= outpicref->buf->linesize[plane];
+static int frame_needs_copy(PadContext *s, AVFrame *frame)
+{
+ int i;
- if( y_in_buf<<vsub >= outpicref->buf->h
- || x_in_buf<<hsub >= outpicref->buf->w)
+ if (!av_frame_is_writable(frame))
return 1;
+
+ for (i = 0; i < FF_ARRAY_ELEMS(frame->buf) && frame->buf[i]; i++)
+ if (buffer_needs_copy(s, frame, frame->buf[i]))
+ return 1;
return 0;
}
-static void start_frame(AVFilterLink *inlink, AVFilterBufferRef *inpicref)
+static int filter_frame(AVFilterLink *inlink, AVFrame *in)
{
PadContext *pad = inlink->dst->priv;
- AVFilterBufferRef *outpicref = avfilter_ref_buffer(inpicref, ~0);
- int plane;
+ AVFrame *out;
+ int needs_copy = frame_needs_copy(pad, in);
- for (plane = 0; plane < 4 && outpicref->data[plane]; plane++) {
- int hsub = (plane == 1 || plane == 2) ? pad->hsub : 0;
- int vsub = (plane == 1 || plane == 2) ? pad->vsub : 0;
-
- av_assert0(outpicref->buf->w>0 && outpicref->buf->h>0);
-
- if(outpicref->format != outpicref->buf->format) //unsupported currently
- break;
-
- outpicref->data[plane] -= (pad->x >> hsub) * pad ->line_step[plane]
- + (pad->y >> vsub) * outpicref->linesize [plane];
-
- if( does_clip(pad, outpicref, plane, hsub, vsub, 0, 0)
- || does_clip(pad, outpicref, plane, hsub, vsub, 0, pad->h-1)
- || does_clip(pad, outpicref, plane, hsub, vsub, pad->w-1, 0)
- || does_clip(pad, outpicref, plane, hsub, vsub, pad->w-1, pad->h-1)
- )
- break;
- }
- pad->needs_copy= plane < 4 && outpicref->data[plane];
- if(pad->needs_copy){
+ if (needs_copy) {
av_log(inlink->dst, AV_LOG_DEBUG, "Direct padding impossible allocating new frame\n");
- avfilter_unref_buffer(outpicref);
- outpicref = avfilter_get_video_buffer(inlink->dst->outputs[0], AV_PERM_WRITE | AV_PERM_NEG_LINESIZES,
- FFMAX(inlink->w, pad->w),
- FFMAX(inlink->h, pad->h));
- avfilter_copy_buffer_ref_props(outpicref, inpicref);
+ out = ff_get_video_buffer(inlink->dst->outputs[0],
+ FFMAX(inlink->w, pad->w),
+ FFMAX(inlink->h, pad->h));
+ if (!out) {
+ av_frame_free(&in);
+ return AVERROR(ENOMEM);
+ }
+
+ av_frame_copy_props(out, in);
+ } else {
+ int i;
+
+ out = in;
+ for (i = 0; i < FF_ARRAY_ELEMS(out->data) && out->data[i]; i++) {
+ int hsub = (i == 1 || i == 2) ? pad->hsub : 0;
+ int vsub = (i == 1 || i == 2) ? pad->vsub : 0;
+ out->data[i] -= (pad->x >> hsub) * pad->line_step[i] +
+ (pad->y >> vsub) * out->linesize[i];
+ }
}
- inlink->dst->outputs[0]->out_buf = outpicref;
-
- outpicref->video->w = pad->w;
- outpicref->video->h = pad->h;
-
- avfilter_start_frame(inlink->dst->outputs[0], outpicref);
-}
-
-static void end_frame(AVFilterLink *link)
-{
- avfilter_end_frame(link->dst->outputs[0]);
- avfilter_unref_buffer(link->cur_buf);
-}
-
-static void draw_send_bar_slice(AVFilterLink *link, int y, int h, int slice_dir, int before_slice)
-{
- PadContext *pad = link->dst->priv;
- int bar_y, bar_h = 0;
-
- if (slice_dir * before_slice == 1 && y == pad->y) {
- /* top bar */
- bar_y = 0;
- bar_h = pad->y;
- } else if (slice_dir * before_slice == -1 && (y + h) == (pad->y + pad->in_h)) {
- /* bottom bar */
- bar_y = pad->y + pad->in_h;
- bar_h = pad->h - pad->in_h - pad->y;
+ /* top bar */
+ if (pad->y) {
+ ff_draw_rectangle(out->data, out->linesize,
+ pad->line, pad->line_step, pad->hsub, pad->vsub,
+ 0, 0, pad->w, pad->y);
}
- if (bar_h) {
- ff_draw_rectangle(link->dst->outputs[0]->out_buf->data,
- link->dst->outputs[0]->out_buf->linesize,
+ /* bottom bar */
+ if (pad->h > pad->y + pad->in_h) {
+ ff_draw_rectangle(out->data, out->linesize,
pad->line, pad->line_step, pad->hsub, pad->vsub,
- 0, bar_y, pad->w, bar_h);
- avfilter_draw_slice(link->dst->outputs[0], bar_y, bar_h, slice_dir);
+ 0, pad->y + pad->in_h, pad->w, pad->h - pad->y - pad->in_h);
}
-}
-
-static void draw_slice(AVFilterLink *link, int y, int h, int slice_dir)
-{
- PadContext *pad = link->dst->priv;
- AVFilterBufferRef *outpic = link->dst->outputs[0]->out_buf;
- AVFilterBufferRef *inpic = link->cur_buf;
-
- y += pad->y;
-
- y &= ~((1 << pad->vsub) - 1);
- h &= ~((1 << pad->vsub) - 1);
-
- if (!h)
- return;
- draw_send_bar_slice(link, y, h, slice_dir, 1);
/* left border */
- ff_draw_rectangle(outpic->data, outpic->linesize, pad->line, pad->line_step,
- pad->hsub, pad->vsub, 0, y, pad->x, h);
-
- if(pad->needs_copy){
- ff_copy_rectangle(outpic->data, outpic->linesize,
- inpic->data, inpic->linesize, pad->line_step,
- pad->hsub, pad->vsub,
- pad->x, y, y-pad->y, inpic->video->w, h);
+ ff_draw_rectangle(out->data, out->linesize, pad->line, pad->line_step,
+ pad->hsub, pad->vsub, 0, pad->y, pad->x, in->height);
+
+ if (needs_copy) {
+ ff_copy_rectangle(out->data, out->linesize, in->data, in->linesize,
+ pad->line_step, pad->hsub, pad->vsub,
+ pad->x, pad->y, 0, in->width, in->height);
}
/* right border */
- ff_draw_rectangle(outpic->data, outpic->linesize,
+ ff_draw_rectangle(out->data, out->linesize,
pad->line, pad->line_step, pad->hsub, pad->vsub,
- pad->x + pad->in_w, y, pad->w - pad->x - pad->in_w, h);
- avfilter_draw_slice(link->dst->outputs[0], y, h, slice_dir);
+ pad->x + pad->in_w, pad->y, pad->w - pad->x - pad->in_w,
+ in->height);
- draw_send_bar_slice(link, y, h, slice_dir, -1);
+ out->width = pad->w;
+ out->height = pad->h;
+
+ if (in != out)
+ av_frame_free(&in);
+ return ff_filter_frame(inlink->dst->outputs[0], out);
}
+static const AVFilterPad avfilter_vf_pad_inputs[] = {
+ {
+ .name = "default",
+ .type = AVMEDIA_TYPE_VIDEO,
+ .config_props = config_input,
+ .get_video_buffer = get_video_buffer,
+ .filter_frame = filter_frame,
+ },
+ { NULL }
+};
+
+static const AVFilterPad avfilter_vf_pad_outputs[] = {
+ {
+ .name = "default",
+ .type = AVMEDIA_TYPE_VIDEO,
+ .config_props = config_output,
+ },
+ { NULL }
+};
+
AVFilter avfilter_vf_pad = {
.name = "pad",
.description = NULL_IF_CONFIG_SMALL("Pad input image to width:height[:x:y[:color]] (default x and y: 0, default color: black)."),
.uninit = uninit,
.query_formats = query_formats,
- .inputs = (AVFilterPad[]) {{ .name = "default",
- .type = AVMEDIA_TYPE_VIDEO,
- .config_props = config_input,
- .get_video_buffer = get_video_buffer,
- .start_frame = start_frame,
- .draw_slice = draw_slice,
- .end_frame = end_frame, },
- { .name = NULL}},
-
- .outputs = (AVFilterPad[]) {{ .name = "default",
- .type = AVMEDIA_TYPE_VIDEO,
- .config_props = config_output, },
- { .name = NULL}},
+ .inputs = avfilter_vf_pad_inputs,
+
+ .outputs = avfilter_vf_pad_outputs,
};
projects / ffmpeg / blobdiff