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/*
* Copyright (c) 2009 Stefano Sabatini
*
* 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
*/

#include <stdio.h>

#include "libavformat/avformat.h"
#include "libavutil/pixdesc.h"
#include "libavutil/samplefmt.h"
#include "libavfilter/avfilter.h"
#include "libavfilter/formats.h"

static void print_formats(AVFilterContext *filter_ctx)
{
    int i, j;

#define PRINT_FMTS(inout, outin, INOUT) \
for (i = 0; i < filter_ctx->nb_##inout##puts; i++) { \
if (filter_ctx->inout##puts[i]->type == AVMEDIA_TYPE_VIDEO) { \
AVFilterFormats *fmts = \
filter_ctx->inout##puts[i]->outin##_formats; \
for (j = 0; j < fmts->nb_formats; j++) \
if(av_get_pix_fmt_name(fmts->formats[j])) \
printf(#INOUT "PUT[%d] %s: fmt:%s\n", \
i, filter_ctx->filter->inout##puts[i].name, \
av_get_pix_fmt_name(fmts->formats[j])); \
} else if (filter_ctx->inout##puts[i]->type == AVMEDIA_TYPE_AUDIO) { \
AVFilterFormats *fmts; \
AVFilterChannelLayouts *layouts; \
\
fmts = filter_ctx->inout##puts[i]->outin##_formats; \
for (j = 0; j < fmts->nb_formats; j++) \
printf(#INOUT "PUT[%d] %s: fmt:%s\n", \
i, filter_ctx->filter->inout##puts[i].name, \
av_get_sample_fmt_name(fmts->formats[j])); \
\
layouts = filter_ctx->inout##puts[i]->outin##_channel_layouts; \
for (j = 0; j < layouts->nb_channel_layouts; j++) { \
char buf[256]; \
av_get_channel_layout_string(buf, sizeof(buf), -1, \
layouts->channel_layouts[j]); \
printf(#INOUT "PUT[%d] %s: chlayout:%s\n", \
i, filter_ctx->filter->inout##puts[i].name, buf); \
} \
} \
} \

    PRINT_FMTS(in, out, IN);
    PRINT_FMTS(out, in, OUT);
}

int main(int argc, char **argv)
{
    AVFilter *filter;
    AVFilterContext *filter_ctx;
    AVFilterGraph *graph_ctx;
    const char *filter_name;
    const char *filter_args = NULL;
    int i;

    av_log_set_level(AV_LOG_DEBUG);

    if (argc < 2) {
        fprintf(stderr, "Missing filter name as argument\n");
        return 1;
    }

    filter_name = argv[1];
    if (argc > 2)
        filter_args = argv[2];

    /* allocate graph */
    graph_ctx = avfilter_graph_alloc();
    if (!graph_ctx)
        return 1;

    avfilter_register_all();

    /* get a corresponding filter and open it */
    if (!(filter = avfilter_get_by_name(filter_name))) {
        fprintf(stderr, "Unrecognized filter with name '%s'\n", filter_name);
        return 1;
    }

    /* open filter and add it to the graph */
    if (!(filter_ctx = avfilter_graph_alloc_filter(graph_ctx, filter, filter_name))) {
        fprintf(stderr, "Impossible to open filter with name '%s'\n",
                filter_name);
        return 1;
    }
    if (avfilter_init_str(filter_ctx, filter_args) < 0) {
        fprintf(stderr, "Impossible to init filter '%s' with arguments '%s'\n",
                filter_name, filter_args);
        return 1;
    }

    /* create a link for each of the input pads */
    for (i = 0; i < filter_ctx->nb_inputs; i++) {
        AVFilterLink *link = av_mallocz(sizeof(AVFilterLink));
        link->type = filter_ctx->filter->inputs[i].type;
        filter_ctx->inputs[i] = link;
    }
    for (i = 0; i < filter_ctx->nb_outputs; i++) {
        AVFilterLink *link = av_mallocz(sizeof(AVFilterLink));
        link->type = filter_ctx->filter->outputs[i].type;
        filter_ctx->outputs[i] = link;
    }

    if (filter->query_formats)
        filter->query_formats(filter_ctx);
    else
        ff_default_query_formats(filter_ctx);

    print_formats(filter_ctx);

    avfilter_free(filter_ctx);
    avfilter_graph_free(&graph_ctx);
    fflush(stdout);
    return 0;
}
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