[deb_ffmpeg.git] / ffmpeg / libavfilter / vf_tile.c

/*
 * Copyright (c) 2012 Nicolas George
 *
 * This file is part of FFmpeg.
 *
 * FFmpeg is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * FFmpeg is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with FFmpeg; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 */

/**
 * @file
 * tile video filter
 */

#include "libavutil/opt.h"
#include "libavutil/pixdesc.h"
#include "avfilter.h"
#include "drawutils.h"
#include "formats.h"
#include "video.h"
#include "internal.h"

typedef struct {
    const AVClass *class;
    unsigned w, h;
    unsigned margin;
    unsigned padding;
    unsigned current;
    unsigned nb_frames;
    FFDrawContext draw;
    FFDrawColor blank;
    AVFrame *out_ref;
    uint8_t rgba_color[4];
} TileContext;

#define REASONABLE_SIZE 1024

#define OFFSET(x) offsetof(TileContext, x)
#define FLAGS AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_FILTERING_PARAM

static const AVOption tile_options[] = {
    { "layout", "set grid size", OFFSET(w), AV_OPT_TYPE_IMAGE_SIZE,
        {.str = "6x5"}, 0, 0, FLAGS },
    { "nb_frames", "set maximum number of frame to render", OFFSET(nb_frames),
        AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, FLAGS },
    { "margin",  "set outer border margin in pixels",    OFFSET(margin),
        AV_OPT_TYPE_INT, {.i64 = 0}, 0, 1024, FLAGS },
    { "padding", "set inner border thickness in pixels", OFFSET(padding),
        AV_OPT_TYPE_INT, {.i64 = 0}, 0, 1024, FLAGS },
    { "color",   "set the color of the unused area", OFFSET(rgba_color), AV_OPT_TYPE_COLOR, {.str = "black"}, .flags = FLAGS },
    { NULL }
};

AVFILTER_DEFINE_CLASS(tile);

static av_cold int init(AVFilterContext *ctx)
{
    TileContext *tile = ctx->priv;

    if (tile->w > REASONABLE_SIZE || tile->h > REASONABLE_SIZE) {
        av_log(ctx, AV_LOG_ERROR, "Tile size %ux%u is insane.\n",
               tile->w, tile->h);
        return AVERROR(EINVAL);
    }

    if (tile->nb_frames == 0) {
        tile->nb_frames = tile->w * tile->h;
    } else if (tile->nb_frames > tile->w * tile->h) {
        av_log(ctx, AV_LOG_ERROR, "nb_frames must be less than or equal to %dx%d=%d\n",
               tile->w, tile->h, tile->w * tile->h);
        return AVERROR(EINVAL);
    }

    return 0;
}

static int query_formats(AVFilterContext *ctx)
{
    ff_set_common_formats(ctx, ff_draw_supported_pixel_formats(0));
    return 0;
}

static int config_props(AVFilterLink *outlink)
{
    AVFilterContext *ctx = outlink->src;
    TileContext *tile    = ctx->priv;
    AVFilterLink *inlink = ctx->inputs[0];
    const unsigned total_margin_w = (tile->w - 1) * tile->padding + 2*tile->margin;
    const unsigned total_margin_h = (tile->h - 1) * tile->padding + 2*tile->margin;

    if (inlink->w > (INT_MAX - total_margin_w) / tile->w) {
        av_log(ctx, AV_LOG_ERROR, "Total width %ux%u is too much.\n",
               tile->w, inlink->w);
        return AVERROR(EINVAL);
    }
    if (inlink->h > (INT_MAX - total_margin_h) / tile->h) {
        av_log(ctx, AV_LOG_ERROR, "Total height %ux%u is too much.\n",
               tile->h, inlink->h);
        return AVERROR(EINVAL);
    }
    outlink->w = tile->w * inlink->w + total_margin_w;
    outlink->h = tile->h * inlink->h + total_margin_h;
    outlink->sample_aspect_ratio = inlink->sample_aspect_ratio;
    outlink->frame_rate = av_mul_q(inlink->frame_rate,
                                   av_make_q(1, tile->nb_frames));
    ff_draw_init(&tile->draw, inlink->format, 0);
    ff_draw_color(&tile->draw, &tile->blank, tile->rgba_color);

    outlink->flags |= FF_LINK_FLAG_REQUEST_LOOP;

    return 0;
}

static void get_current_tile_pos(AVFilterContext *ctx, unsigned *x, unsigned *y)
{
    TileContext *tile    = ctx->priv;
    AVFilterLink *inlink = ctx->inputs[0];
    const unsigned tx = tile->current % tile->w;
    const unsigned ty = tile->current / tile->w;

    *x = tile->margin + (inlink->w + tile->padding) * tx;
    *y = tile->margin + (inlink->h + tile->padding) * ty;
}

static void draw_blank_frame(AVFilterContext *ctx, AVFrame *out_buf)
{
    TileContext *tile    = ctx->priv;
    AVFilterLink *inlink = ctx->inputs[0];
    unsigned x0, y0;

    get_current_tile_pos(ctx, &x0, &y0);
    ff_fill_rectangle(&tile->draw, &tile->blank,
                      out_buf->data, out_buf->linesize,
                      x0, y0, inlink->w, inlink->h);
    tile->current++;
}
static int end_last_frame(AVFilterContext *ctx)
{
    TileContext *tile     = ctx->priv;
    AVFilterLink *outlink = ctx->outputs[0];
    AVFrame *out_buf = tile->out_ref;
    int ret;

    while (tile->current < tile->nb_frames)
        draw_blank_frame(ctx, out_buf);
    ret = ff_filter_frame(outlink, out_buf);
    tile->current = 0;
    return ret;
}

/* Note: direct rendering is not possible since there is no guarantee that
 * buffers are fed to filter_frame in the order they were obtained from
 * get_buffer (think B-frames). */

static int filter_frame(AVFilterLink *inlink, AVFrame *picref)
{
    AVFilterContext *ctx  = inlink->dst;
    TileContext *tile     = ctx->priv;
    AVFilterLink *outlink = ctx->outputs[0];
    unsigned x0, y0;

    if (!tile->current) {
        tile->out_ref = ff_get_video_buffer(outlink, outlink->w, outlink->h);
        if (!tile->out_ref) {
            av_frame_free(&picref);
            return AVERROR(ENOMEM);
        }
        av_frame_copy_props(tile->out_ref, picref);
        tile->out_ref->width  = outlink->w;
        tile->out_ref->height = outlink->h;

        /* fill surface once for margin/padding */
        if (tile->margin || tile->padding)
            ff_fill_rectangle(&tile->draw, &tile->blank,
                              tile->out_ref->data,
                              tile->out_ref->linesize,
                              0, 0, outlink->w, outlink->h);
    }

    get_current_tile_pos(ctx, &x0, &y0);
    ff_copy_rectangle2(&tile->draw,
                       tile->out_ref->data, tile->out_ref->linesize,
                       picref->data, picref->linesize,
                       x0, y0, 0, 0, inlink->w, inlink->h);

    av_frame_free(&picref);
    if (++tile->current == tile->nb_frames)
        return end_last_frame(ctx);

    return 0;
}

static int request_frame(AVFilterLink *outlink)
{
    AVFilterContext *ctx = outlink->src;
    TileContext *tile    = ctx->priv;
    AVFilterLink *inlink = ctx->inputs[0];
    int r;

    r = ff_request_frame(inlink);
    if (r == AVERROR_EOF && tile->current)
        r = end_last_frame(ctx);
    return r;
}

static const AVFilterPad tile_inputs[] = {
    {
        .name         = "default",
        .type         = AVMEDIA_TYPE_VIDEO,
        .filter_frame = filter_frame,
    },
    { NULL }
};

static const AVFilterPad tile_outputs[] = {
    {
        .name          = "default",
        .type          = AVMEDIA_TYPE_VIDEO,
        .config_props  = config_props,
        .request_frame = request_frame,
    },
    { NULL }
};

AVFilter ff_vf_tile = {
    .name          = "tile",
    .description   = NULL_IF_CONFIG_SMALL("Tile several successive frames together."),
    .init          = init,
    .query_formats = query_formats,
    .priv_size     = sizeof(TileContext),
    .inputs        = tile_inputs,
    .outputs       = tile_outputs,
    .priv_class    = &tile_class,
};
Commit	Line	Data
2ba45a60 DM	1	/*
	2	* Copyright (c) 2012 Nicolas George
	3	*
	4	* This file is part of FFmpeg.
	5	*
	6	* FFmpeg is free software; you can redistribute it and/or
	7	* modify it under the terms of the GNU Lesser General Public
	8	* License as published by the Free Software Foundation; either
	9	* version 2.1 of the License, or (at your option) any later version.
	10	*
	11	* FFmpeg is distributed in the hope that it will be useful,
	12	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	13	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	14	* Lesser General Public License for more details.
	15	*
	16	* You should have received a copy of the GNU Lesser General Public
	17	* License along with FFmpeg; if not, write to the Free Software
	18	* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
	19	*/
	20
	21	/**
	22	* @file
	23	* tile video filter
	24	*/
	25
	26	#include "libavutil/opt.h"
	27	#include "libavutil/pixdesc.h"
	28	#include "avfilter.h"
	29	#include "drawutils.h"
	30	#include "formats.h"
	31	#include "video.h"
	32	#include "internal.h"
	33
	34	typedef struct {
	35	const AVClass *class;
	36	unsigned w, h;
	37	unsigned margin;
	38	unsigned padding;
	39	unsigned current;
	40	unsigned nb_frames;
	41	FFDrawContext draw;
	42	FFDrawColor blank;
	43	AVFrame *out_ref;
	44	uint8_t rgba_color[4];
	45	} TileContext;
	46
	47	#define REASONABLE_SIZE 1024
	48
	49	#define OFFSET(x) offsetof(TileContext, x)
	50	#define FLAGS AV_OPT_FLAG_VIDEO_PARAM\|AV_OPT_FLAG_FILTERING_PARAM
	51
	52	static const AVOption tile_options[] = {
	53	{ "layout", "set grid size", OFFSET(w), AV_OPT_TYPE_IMAGE_SIZE,
	54	{.str = "6x5"}, 0, 0, FLAGS },
	55	{ "nb_frames", "set maximum number of frame to render", OFFSET(nb_frames),
	56	AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, FLAGS },
	57	{ "margin", "set outer border margin in pixels", OFFSET(margin),
	58	AV_OPT_TYPE_INT, {.i64 = 0}, 0, 1024, FLAGS },
	59	{ "padding", "set inner border thickness in pixels", OFFSET(padding),
	60	AV_OPT_TYPE_INT, {.i64 = 0}, 0, 1024, FLAGS },
	61	{ "color", "set the color of the unused area", OFFSET(rgba_color), AV_OPT_TYPE_COLOR, {.str = "black"}, .flags = FLAGS },
	62	{ NULL }
	63	};
	64
65	AVFILTER_DEFINE_CLASS(tile);
66
67	static av_cold int init(AVFilterContext *ctx)
68	{
69	TileContext *tile = ctx->priv;
70
71	if (tile->w > REASONABLE_SIZE \|\| tile->h > REASONABLE_SIZE) {
72	av_log(ctx, AV_LOG_ERROR, "Tile size %ux%u is insane.\n",
73	tile->w, tile->h);
74	return AVERROR(EINVAL);
75	}
76
77	if (tile->nb_frames == 0) {
78	tile->nb_frames = tile->w * tile->h;
79	} else if (tile->nb_frames > tile->w * tile->h) {
80	av_log(ctx, AV_LOG_ERROR, "nb_frames must be less than or equal to %dx%d=%d\n",
81	tile->w, tile->h, tile->w * tile->h);
82	return AVERROR(EINVAL);
83	}
84
85	return 0;
86	}
87
88	static int query_formats(AVFilterContext *ctx)
89	{
90	ff_set_common_formats(ctx, ff_draw_supported_pixel_formats(0));
91	return 0;
92	}
93
94	static int config_props(AVFilterLink *outlink)
95	{
96	AVFilterContext *ctx = outlink->src;
97	TileContext *tile = ctx->priv;
98	AVFilterLink *inlink = ctx->inputs[0];
99	const unsigned total_margin_w = (tile->w - 1) * tile->padding + 2*tile->margin;
100	const unsigned total_margin_h = (tile->h - 1) * tile->padding + 2*tile->margin;
101
102	if (inlink->w > (INT_MAX - total_margin_w) / tile->w) {
103	av_log(ctx, AV_LOG_ERROR, "Total width %ux%u is too much.\n",
104	tile->w, inlink->w);
105	return AVERROR(EINVAL);
106	}
107	if (inlink->h > (INT_MAX - total_margin_h) / tile->h) {
108	av_log(ctx, AV_LOG_ERROR, "Total height %ux%u is too much.\n",
109	tile->h, inlink->h);
110	return AVERROR(EINVAL);
111	}
112	outlink->w = tile->w * inlink->w + total_margin_w;
113	outlink->h = tile->h * inlink->h + total_margin_h;
114	outlink->sample_aspect_ratio = inlink->sample_aspect_ratio;
115	outlink->frame_rate = av_mul_q(inlink->frame_rate,
116	av_make_q(1, tile->nb_frames));
117	ff_draw_init(&tile->draw, inlink->format, 0);
118	ff_draw_color(&tile->draw, &tile->blank, tile->rgba_color);
119
120	outlink->flags \|= FF_LINK_FLAG_REQUEST_LOOP;
121
122	return 0;
123	}
124
125	static void get_current_tile_pos(AVFilterContext ctx, unsigned x, unsigned *y)
126	{
127	TileContext *tile = ctx->priv;
128	AVFilterLink *inlink = ctx->inputs[0];
129	const unsigned tx = tile->current % tile->w;
130	const unsigned ty = tile->current / tile->w;
131
132	x = tile->margin + (inlink->w + tile->padding) tx;
133	y = tile->margin + (inlink->h + tile->padding) ty;
134	}
135
136	static void draw_blank_frame(AVFilterContext ctx, AVFrame out_buf)
137	{
138	TileContext *tile = ctx->priv;
139	AVFilterLink *inlink = ctx->inputs[0];
140	unsigned x0, y0;
141
142	get_current_tile_pos(ctx, &x0, &y0);
143	ff_fill_rectangle(&tile->draw, &tile->blank,
144	out_buf->data, out_buf->linesize,
145	x0, y0, inlink->w, inlink->h);
146	tile->current++;
147	}
148	static int end_last_frame(AVFilterContext *ctx)
149	{
150	TileContext *tile = ctx->priv;
151	AVFilterLink *outlink = ctx->outputs[0];
152	AVFrame *out_buf = tile->out_ref;
153	int ret;
154
155	while (tile->current < tile->nb_frames)
156	draw_blank_frame(ctx, out_buf);
157	ret = ff_filter_frame(outlink, out_buf);
158	tile->current = 0;
159	return ret;
160	}
161
162	/* Note: direct rendering is not possible since there is no guarantee that
163	* buffers are fed to filter_frame in the order they were obtained from
164	* get_buffer (think B-frames). */
165
166	static int filter_frame(AVFilterLink inlink, AVFrame picref)
167	{
168	AVFilterContext *ctx = inlink->dst;
169	TileContext *tile = ctx->priv;
170	AVFilterLink *outlink = ctx->outputs[0];
171	unsigned x0, y0;
172
173	if (!tile->current) {
174	tile->out_ref = ff_get_video_buffer(outlink, outlink->w, outlink->h);
175	if (!tile->out_ref) {
176	av_frame_free(&picref);
177	return AVERROR(ENOMEM);
178	}
179	av_frame_copy_props(tile->out_ref, picref);
180	tile->out_ref->width = outlink->w;
181	tile->out_ref->height = outlink->h;
182
183	/* fill surface once for margin/padding */
184	if (tile->margin \|\| tile->padding)
185	ff_fill_rectangle(&tile->draw, &tile->blank,
186	tile->out_ref->data,
187	tile->out_ref->linesize,
188	0, 0, outlink->w, outlink->h);
189	}
190
191	get_current_tile_pos(ctx, &x0, &y0);
192	ff_copy_rectangle2(&tile->draw,
193	tile->out_ref->data, tile->out_ref->linesize,
194	picref->data, picref->linesize,
195	x0, y0, 0, 0, inlink->w, inlink->h);
196
197	av_frame_free(&picref);
198	if (++tile->current == tile->nb_frames)
199	return end_last_frame(ctx);
200
201	return 0;
202	}
203
204	static int request_frame(AVFilterLink *outlink)
205	{
206	AVFilterContext *ctx = outlink->src;
207	TileContext *tile = ctx->priv;
208	AVFilterLink *inlink = ctx->inputs[0];
209	int r;
210
211	r = ff_request_frame(inlink);
212	if (r == AVERROR_EOF && tile->current)
213	r = end_last_frame(ctx);
214	return r;
215	}
216
217	static const AVFilterPad tile_inputs[] = {
218	{
219	.name = "default",
220	.type = AVMEDIA_TYPE_VIDEO,
221	.filter_frame = filter_frame,
222	},
223	{ NULL }
224	};
225
226	static const AVFilterPad tile_outputs[] = {
227	{
228	.name = "default",
229	.type = AVMEDIA_TYPE_VIDEO,
230	.config_props = config_props,
231	.request_frame = request_frame,
232	},
233	{ NULL }
234	};
235
236	AVFilter ff_vf_tile = {
237	.name = "tile",
238	.description = NULL_IF_CONFIG_SMALL("Tile several successive frames together."),
239	.init = init,
240	.query_formats = query_formats,
241	.priv_size = sizeof(TileContext),
242	.inputs = tile_inputs,
243	.outputs = tile_outputs,
244	.priv_class = &tile_class,
245	};