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lavfi: replace passthrough_filter_frame with a flag. 

With the introduction of AVFilterContext->is_disabled, we can simplify
the custom passthrough mode in filters.

This commit is technically a small compat break, but the timeline was
introduced very recently.

Doxy by Stefano Sabatini.
This commit is contained in:
Clément Bœsch 2013-05-09 01:04:41 +02:00
parent 60f0e30431
commit 1776177b7f
25 changed files with 52 additions and 61 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
doc/APIchanges
View File

@ -15,6 +15,9 @@ libavutil: 2012-10-22
API changes, most recent first:
2013-05-12 - xxxxxxx - lavfi 3.65.100
Add AVFILTER_FLAG_SUPPORT_TIMELINE* filter flags.
2013-04-19 - xxxxxxx - lavc 55.4.100
Add AV_CODEC_PROP_TEXT_SUB property for text based subtitles codec.

3
libavfilter/af_apad.c
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@ -131,7 +131,6 @@ static const AVFilterPad apad_inputs[] = {
.name = "default",
.type = AVMEDIA_TYPE_AUDIO,
.filter_frame = filter_frame,
.passthrough_filter_frame = filter_frame,
},
{ NULL },
};
@ -153,5 +152,5 @@ AVFilter avfilter_af_apad = {
.inputs = apad_inputs,
.outputs = apad_outputs,
.priv_class = &apad_class,
.flags = AVFILTER_FLAG_SUPPORT_TIMELINE,
.flags = AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL,
};

2
libavfilter/af_volume.c
View File

@ -296,5 +296,5 @@ AVFilter avfilter_af_volume = {
.init = init,
.inputs = avfilter_af_volume_inputs,
.outputs = avfilter_af_volume_outputs,
.flags = AVFILTER_FLAG_SUPPORT_TIMELINE,
.flags = AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC,
};

9
libavfilter/avfilter.c
View File

@ -453,6 +453,9 @@ int avfilter_register(AVFilter *filter)
AVFilter **f = &first_filter;
int i;
/* the filter must select generic or internal exclusively */
av_assert0((filter->flags & AVFILTER_FLAG_SUPPORT_TIMELINE) != AVFILTER_FLAG_SUPPORT_TIMELINE);
for(i=0; filter->inputs && filter->inputs[i].name; i++) {
const AVFilterPad *input = &filter->inputs[i];
av_assert0( !input->filter_frame
@ -995,9 +998,9 @@ static int ff_filter_frame_framed(AVFilterLink *link, AVFrame *frame)
dstctx->var_values[VAR_POS] = pos == -1 ? NAN : pos;
dstctx->is_disabled = !av_expr_eval(dstctx->enable, dstctx->var_values, NULL);
if (dstctx->is_disabled)
filter_frame = dst->passthrough_filter_frame ? dst->passthrough_filter_frame
: default_filter_frame;
if (dstctx->is_disabled &&
(dstctx->filter->flags & AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC))
filter_frame = default_filter_frame;
}
ret = filter_frame(link, out);
link->frame_count++;

33
libavfilter/avfilter.h
View File

@ -385,19 +385,6 @@ struct AVFilterPad {
int needs_fifo;
int needs_writable;
/**
* Passthrough filtering callback.
*
* If a filter supports timeline editing (in case
* AVFILTER_FLAG_SUPPORT_TIMELINE is enabled) then it can implement a
* custom passthrough callback to update its local context (for example to
* keep a frame reference, or simply send the filter to a custom outlink).
* The filter must not do any change to the frame in this callback.
*
* Input pads only.
*/
int (*passthrough_filter_frame)(AVFilterLink *link, AVFrame *frame);
};
#endif
@ -444,9 +431,25 @@ enum AVMediaType avfilter_pad_get_type(const AVFilterPad *pads, int pad_idx);
/**
* Some filters support a generic "enable" expression option that can be used
* to enable or disable a filter in the timeline. Filters supporting this
* option have this flag set.
* option have this flag set. When the enable expression is false, the default
* no-op filter_frame() function is called in place of the filter_frame()
* callback defined on each input pad, thus the frame is passed unchanged to
* the next filters.
*/
#define AVFILTER_FLAG_SUPPORT_TIMELINE (1 << 16)
#define AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC (1 << 16)
/**
* Same as AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC, except that the filter will
* have its filter_frame() callback(s) called as usual even when the enable
* expression is false. The filter will disable filtering within the
* filter_frame() callback(s) itself, for example executing code depending on
* the AVFilterContext->is_disabled value.
*/
#define AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL (1 << 17)
/**
* Handy mask to test whether the filter supports or no the timeline feature
* (internally or generically).
*/
#define AVFILTER_FLAG_SUPPORT_TIMELINE (AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC | AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL)
/**
* Filter definition. This defines the pads a filter contains, and all the

2
libavfilter/version.h
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@ -29,7 +29,7 @@
#include "libavutil/avutil.h"
#define LIBAVFILTER_VERSION_MAJOR 3
#define LIBAVFILTER_VERSION_MINOR 64
#define LIBAVFILTER_VERSION_MINOR 65
#define LIBAVFILTER_VERSION_MICRO 100
#define LIBAVFILTER_VERSION_INT AV_VERSION_INT(LIBAVFILTER_VERSION_MAJOR, \

2
libavfilter/vf_boxblur.c
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@ -383,5 +383,5 @@ AVFilter avfilter_vf_boxblur = {
.inputs = avfilter_vf_boxblur_inputs,
.outputs = avfilter_vf_boxblur_outputs,
.flags = AVFILTER_FLAG_SUPPORT_TIMELINE,
.flags = AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC,
};

2
libavfilter/vf_colorbalance.c
View File

@ -209,5 +209,5 @@ AVFilter avfilter_vf_colorbalance = {
.query_formats = query_formats,
.inputs = colorbalance_inputs,
.outputs = colorbalance_outputs,
.flags = AVFILTER_FLAG_SUPPORT_TIMELINE,
.flags = AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC,
};

2
libavfilter/vf_colorchannelmixer.c
View File

@ -356,5 +356,5 @@ AVFilter avfilter_vf_colorchannelmixer = {
.query_formats = query_formats,
.inputs = colorchannelmixer_inputs,
.outputs = colorchannelmixer_outputs,
.flags = AVFILTER_FLAG_SUPPORT_TIMELINE,
.flags = AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC,
};

2
libavfilter/vf_colormatrix.c
View File

@ -385,5 +385,5 @@ AVFilter avfilter_vf_colormatrix = {
.inputs = colormatrix_inputs,
.outputs = colormatrix_outputs,
.priv_class = &colormatrix_class,
.flags = AVFILTER_FLAG_SUPPORT_TIMELINE,
.flags = AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC,
};

2
libavfilter/vf_cropdetect.c
View File

@ -233,5 +233,5 @@ AVFilter avfilter_vf_cropdetect = {
.query_formats = query_formats,
.inputs = avfilter_vf_cropdetect_inputs,
.outputs = avfilter_vf_cropdetect_outputs,
.flags = AVFILTER_FLAG_SUPPORT_TIMELINE,
.flags = AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC,
};

2
libavfilter/vf_curves.c
View File

@ -548,5 +548,5 @@ AVFilter avfilter_vf_curves = {
.inputs = curves_inputs,
.outputs = curves_outputs,
.priv_class = &curves_class,
.flags = AVFILTER_FLAG_SUPPORT_TIMELINE,
.flags = AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC,
};

2
libavfilter/vf_delogo.c
View File

@ -271,5 +271,5 @@ AVFilter avfilter_vf_delogo = {
.inputs = avfilter_vf_delogo_inputs,
.outputs = avfilter_vf_delogo_outputs,
.flags = AVFILTER_FLAG_SUPPORT_TIMELINE,
.flags = AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC,
};

2
libavfilter/vf_drawbox.c
View File

@ -181,5 +181,5 @@ AVFilter avfilter_vf_drawbox = {
.query_formats = query_formats,
.inputs = avfilter_vf_drawbox_inputs,
.outputs = avfilter_vf_drawbox_outputs,
.flags = AVFILTER_FLAG_SUPPORT_TIMELINE,
.flags = AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC,
};

2
libavfilter/vf_edgedetect.c
View File

@ -327,5 +327,5 @@ AVFilter avfilter_vf_edgedetect = {
.inputs = edgedetect_inputs,
.outputs = edgedetect_outputs,
.priv_class = &edgedetect_class,
.flags = AVFILTER_FLAG_SUPPORT_TIMELINE,
.flags = AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC,
};

2
libavfilter/vf_gradfun.c
View File

@ -260,5 +260,5 @@ AVFilter avfilter_vf_gradfun = {
.query_formats = query_formats,
.inputs = avfilter_vf_gradfun_inputs,
.outputs = avfilter_vf_gradfun_outputs,
.flags = AVFILTER_FLAG_SUPPORT_TIMELINE,
.flags = AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC,
};

2
libavfilter/vf_histeq.c
View File

@ -279,5 +279,5 @@ AVFilter avfilter_vf_histeq = {
.inputs = histeq_inputs,
.outputs = histeq_outputs,
.priv_class = &histeq_class,
.flags = AVFILTER_FLAG_SUPPORT_TIMELINE,
.flags = AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC,
};

2
libavfilter/vf_hue.c
View File

@ -373,5 +373,5 @@ AVFilter avfilter_vf_hue = {
.inputs = hue_inputs,
.outputs = hue_outputs,
.priv_class = &hue_class,
.flags = AVFILTER_FLAG_SUPPORT_TIMELINE,
.flags = AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC,
};

2
libavfilter/vf_lut.c
View File

@ -354,7 +354,7 @@ static const AVFilterPad outputs[] = {
\
.inputs = inputs, \
.outputs = outputs, \
.flags = AVFILTER_FLAG_SUPPORT_TIMELINE, \
.flags = AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC, \
}
#if CONFIG_LUT_FILTER

2
libavfilter/vf_noise.c
View File

@ -471,5 +471,5 @@ AVFilter avfilter_vf_noise = {
.inputs = noise_inputs,
.outputs = noise_outputs,
.priv_class = &noise_class,
.flags = AVFILTER_FLAG_SUPPORT_TIMELINE,
.flags = AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC,
};

25
libavfilter/vf_overlay.c
View File

@ -88,7 +88,6 @@ enum var_name {
typedef struct {
const AVClass *class;
int x, y; ///< position of overlayed picture
int enable; ///< tells if blending is enabled
int allow_packed_rgb;
uint8_t frame_requested;
@ -597,7 +596,7 @@ static int try_filter_frame(AVFilterContext *ctx, AVFrame *mainpic)
over->var_values[VAR_X], over->x,
over->var_values[VAR_Y], over->y);
}
if (over->enable)
if (!ctx->is_disabled)
blend_image(ctx, mainpic, over->overpicref, over->x, over->y);
}
@ -663,20 +662,6 @@ static int filter_frame_over(AVFilterLink *inlink, AVFrame *inpicref)
return ret == AVERROR(EAGAIN) ? 0 : ret;
}
#define DEF_FILTER_FRAME(name, mode, enable_value) \
static int filter_frame_##name##_##mode(AVFilterLink *inlink, AVFrame *frame) \
{ \
AVFilterContext *ctx = inlink->dst; \
OverlayContext *over = ctx->priv; \
over->enable = enable_value; \
return filter_frame_##name(inlink, frame); \
}
DEF_FILTER_FRAME(main, enabled, 1);
DEF_FILTER_FRAME(main, disabled, 0);
DEF_FILTER_FRAME(over, enabled, 1);
DEF_FILTER_FRAME(over, disabled, 0);
static int request_frame(AVFilterLink *outlink)
{
AVFilterContext *ctx = outlink->src;
@ -734,16 +719,14 @@ static const AVFilterPad avfilter_vf_overlay_inputs[] = {
.type = AVMEDIA_TYPE_VIDEO,
.get_video_buffer = ff_null_get_video_buffer,
.config_props = config_input_main,
.filter_frame = filter_frame_main_enabled,
.passthrough_filter_frame = filter_frame_main_disabled,
.filter_frame = filter_frame_main,
.needs_writable = 1,
},
{
.name = "overlay",
.type = AVMEDIA_TYPE_VIDEO,
.config_props = config_input_overlay,
.filter_frame = filter_frame_over_enabled,
.passthrough_filter_frame = filter_frame_over_disabled,
.filter_frame = filter_frame_over,
},
{ NULL }
};
@ -773,5 +756,5 @@ AVFilter avfilter_vf_overlay = {
.inputs = avfilter_vf_overlay_inputs,
.outputs = avfilter_vf_overlay_outputs,
.flags = AVFILTER_FLAG_SUPPORT_TIMELINE,
.flags = AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL,
};

2
libavfilter/vf_pp.c
View File

@ -180,5 +180,5 @@ AVFilter avfilter_vf_pp = {
.outputs = pp_outputs,
.process_command = pp_process_command,
.priv_class = &pp_class,
.flags = AVFILTER_FLAG_SUPPORT_TIMELINE,
.flags = AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC,
};

2
libavfilter/vf_removelogo.c
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@ -578,5 +578,5 @@ AVFilter avfilter_vf_removelogo = {
.inputs = removelogo_inputs,
.outputs = removelogo_outputs,
.priv_class = &removelogo_class,
.flags = AVFILTER_FLAG_SUPPORT_TIMELINE,
.flags = AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC,
};

2
libavfilter/vf_smartblur.c
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@ -302,5 +302,5 @@ AVFilter avfilter_vf_smartblur = {
.inputs = smartblur_inputs,
.outputs = smartblur_outputs,
.priv_class = &smartblur_class,
.flags = AVFILTER_FLAG_SUPPORT_TIMELINE,
.flags = AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC,
};

2
libavfilter/vf_unsharp.c
View File

@ -316,5 +316,5 @@ AVFilter avfilter_vf_unsharp = {
.inputs = avfilter_vf_unsharp_inputs,
.outputs = avfilter_vf_unsharp_outputs,
.flags = AVFILTER_FLAG_SUPPORT_TIMELINE,
.flags = AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC,
};