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@ -106,7 +106,6 @@ typedef struct { |
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uint8_t *line[4]; |
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int line_step[4]; |
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int hsub, vsub; ///< chroma subsampling values
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int needs_copy; |
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} PadContext; |
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static av_cold int init(AVFilterContext *ctx, const char *args) |
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@ -303,135 +302,85 @@ static int does_clip(PadContext *pad, AVFilterBufferRef *outpicref, int plane, i |
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return 0; |
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} |
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static int start_frame(AVFilterLink *inlink, AVFilterBufferRef *inpicref) |
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static int filter_frame(AVFilterLink *inlink, AVFilterBufferRef *in) |
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{ |
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PadContext *pad = inlink->dst->priv; |
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AVFilterBufferRef *outpicref = avfilter_ref_buffer(inpicref, ~0); |
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AVFilterBufferRef *for_next_filter; |
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int plane, ret = 0; |
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AVFilterBufferRef *out = avfilter_ref_buffer(in, ~0); |
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int plane, needs_copy; |
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if (!outpicref) |
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if (!out) { |
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avfilter_unref_bufferp(&in); |
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return AVERROR(ENOMEM); |
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} |
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for (plane = 0; plane < 4 && outpicref->data[plane]; plane++) { |
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for (plane = 0; plane < 4 && out->data[plane]; plane++) { |
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int hsub = (plane == 1 || plane == 2) ? pad->hsub : 0; |
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int vsub = (plane == 1 || plane == 2) ? pad->vsub : 0; |
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av_assert0(outpicref->buf->w>0 && outpicref->buf->h>0); |
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av_assert0(out->buf->w > 0 && out->buf->h > 0); |
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if(outpicref->format != outpicref->buf->format) //unsupported currently
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if (out->format != out->buf->format) //unsupported currently
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break; |
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outpicref->data[plane] -= (pad->x >> hsub) * pad ->line_step[plane] |
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+ (pad->y >> vsub) * outpicref->linesize [plane]; |
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out->data[plane] -= (pad->x >> hsub) * pad->line_step[plane] + |
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(pad->y >> vsub) * out->linesize [plane]; |
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if( does_clip(pad, outpicref, plane, hsub, vsub, 0, 0) |
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|| does_clip(pad, outpicref, plane, hsub, vsub, 0, pad->h-1) |
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|| does_clip(pad, outpicref, plane, hsub, vsub, pad->w-1, 0) |
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|| does_clip(pad, outpicref, plane, hsub, vsub, pad->w-1, pad->h-1) |
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) |
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if (does_clip(pad, out, plane, hsub, vsub, 0, 0) || |
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does_clip(pad, out, plane, hsub, vsub, 0, pad->h - 1) || |
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does_clip(pad, out, plane, hsub, vsub, pad->w - 1, 0) || |
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does_clip(pad, out, plane, hsub, vsub, pad->w - 1, pad->h - 1)) |
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break; |
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} |
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pad->needs_copy= plane < 4 && outpicref->data[plane]; |
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if(pad->needs_copy){ |
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needs_copy = plane < 4 && out->data[plane]; |
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if (needs_copy) { |
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av_log(inlink->dst, AV_LOG_DEBUG, "Direct padding impossible allocating new frame\n"); |
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avfilter_unref_buffer(outpicref); |
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outpicref = ff_get_video_buffer(inlink->dst->outputs[0], AV_PERM_WRITE | AV_PERM_NEG_LINESIZES, |
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FFMAX(inlink->w, pad->w), |
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FFMAX(inlink->h, pad->h)); |
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if (!outpicref) |
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avfilter_unref_buffer(out); |
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out = ff_get_video_buffer(inlink->dst->outputs[0], AV_PERM_WRITE | AV_PERM_NEG_LINESIZES, |
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FFMAX(inlink->w, pad->w), |
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FFMAX(inlink->h, pad->h)); |
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if (!out) { |
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avfilter_unref_bufferp(&in); |
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return AVERROR(ENOMEM); |
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} |
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avfilter_copy_buffer_ref_props(outpicref, inpicref); |
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} |
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outpicref->video->w = pad->w; |
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outpicref->video->h = pad->h; |
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for_next_filter = avfilter_ref_buffer(outpicref, ~0); |
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if (!for_next_filter) { |
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ret = AVERROR(ENOMEM); |
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goto fail; |
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avfilter_copy_buffer_ref_props(out, in); |
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} |
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ret = ff_start_frame(inlink->dst->outputs[0], for_next_filter); |
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if (ret < 0) |
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goto fail; |
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inlink->dst->outputs[0]->out_buf = outpicref; |
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return 0; |
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fail: |
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avfilter_unref_bufferp(&outpicref); |
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return ret; |
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} |
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static int end_frame(AVFilterLink *link) |
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{ |
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return ff_end_frame(link->dst->outputs[0]); |
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} |
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out->video->w = pad->w; |
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out->video->h = pad->h; |
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static int draw_send_bar_slice(AVFilterLink *link, int y, int h, int slice_dir, int before_slice) |
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{ |
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PadContext *pad = link->dst->priv; |
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int bar_y, bar_h = 0, ret = 0; |
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if (slice_dir * before_slice == 1 && y == pad->y) { |
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/* top bar */ |
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bar_y = 0; |
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bar_h = pad->y; |
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} else if (slice_dir * before_slice == -1 && (y + h) == (pad->y + pad->in_h)) { |
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/* bottom bar */ |
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bar_y = pad->y + pad->in_h; |
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bar_h = pad->h - pad->in_h - pad->y; |
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/* top bar */ |
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if (pad->y) { |
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ff_draw_rectangle(out->data, out->linesize, |
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pad->line, pad->line_step, pad->hsub, pad->vsub, |
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0, 0, pad->w, pad->y); |
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} |
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if (bar_h) { |
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ff_draw_rectangle(link->dst->outputs[0]->out_buf->data, |
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link->dst->outputs[0]->out_buf->linesize, |
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/* bottom bar */ |
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if (pad->h > pad->y + pad->in_h) { |
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ff_draw_rectangle(out->data, out->linesize, |
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pad->line, pad->line_step, pad->hsub, pad->vsub, |
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0, bar_y, pad->w, bar_h); |
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ret = ff_draw_slice(link->dst->outputs[0], bar_y, bar_h, slice_dir); |
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0, pad->y + pad->in_h, pad->w, pad->h - pad->y - pad->in_h); |
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} |
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return ret; |
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} |
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static int draw_slice(AVFilterLink *link, int y, int h, int slice_dir) |
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{ |
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PadContext *pad = link->dst->priv; |
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AVFilterBufferRef *outpic = link->dst->outputs[0]->out_buf; |
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AVFilterBufferRef *inpic = link->cur_buf; |
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int ret; |
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y += pad->y; |
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y &= ~((1 << pad->vsub) - 1); |
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h &= ~((1 << pad->vsub) - 1); |
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if (!h) |
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return 0; |
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draw_send_bar_slice(link, y, h, slice_dir, 1); |
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/* left border */ |
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ff_draw_rectangle(outpic->data, outpic->linesize, pad->line, pad->line_step, |
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pad->hsub, pad->vsub, 0, y, pad->x, h); |
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if(pad->needs_copy){ |
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ff_copy_rectangle(outpic->data, outpic->linesize, |
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inpic->data, inpic->linesize, pad->line_step, |
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pad->hsub, pad->vsub, |
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pad->x, y, y-pad->y, inpic->video->w, h); |
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ff_draw_rectangle(out->data, out->linesize, pad->line, pad->line_step, |
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pad->hsub, pad->vsub, 0, pad->y, pad->x, in->video->h); |
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if (needs_copy) { |
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ff_copy_rectangle(out->data, out->linesize, in->data, in->linesize, |
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pad->line_step, pad->hsub, pad->vsub, |
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pad->x, pad->y, 0, in->video->w, in->video->h); |
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} |
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/* right border */ |
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ff_draw_rectangle(outpic->data, outpic->linesize, |
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ff_draw_rectangle(out->data, out->linesize, |
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pad->line, pad->line_step, pad->hsub, pad->vsub, |
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pad->x + pad->in_w, y, pad->w - pad->x - pad->in_w, h); |
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ret = ff_draw_slice(link->dst->outputs[0], y, h, slice_dir); |
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if (ret < 0) |
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return ret; |
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pad->x + pad->in_w, pad->y, pad->w - pad->x - pad->in_w, |
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in->video->h); |
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return draw_send_bar_slice(link, y, h, slice_dir, -1); |
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avfilter_unref_bufferp(&in); |
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return ff_filter_frame(inlink->dst->outputs[0], out); |
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} |
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static const AVFilterPad avfilter_vf_pad_inputs[] = { |
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@ -440,9 +389,7 @@ static const AVFilterPad avfilter_vf_pad_inputs[] = { |
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.type = AVMEDIA_TYPE_VIDEO, |
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.config_props = config_input, |
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.get_video_buffer = get_video_buffer, |
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.start_frame = start_frame, |
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.draw_slice = draw_slice, |
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.end_frame = end_frame, |
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.filter_frame = filter_frame, |
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}, |
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{ NULL } |
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}; |
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Anton Khirnov
12 years ago