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https://github.com/FFmpeg/FFmpeg.git
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790f793844
There are lots of files that don't need it: The number of object files that actually need it went down from 2011 to 884 here. Keep it for external users in order to not cause breakages. Also improve the other headers a bit while just at it. Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
342 lines
9.9 KiB
C
342 lines
9.9 KiB
C
/*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include "libavutil/avstring.h"
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#include "libavutil/internal.h"
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#include "libavutil/mem.h"
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#include "libavutil/opt.h"
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#include "avfilter.h"
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#include "audio.h"
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#include "filters.h"
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#include "formats.h"
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#include "framesync.h"
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#include "internal.h"
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#include "video.h"
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typedef struct StreamSelectContext {
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const AVClass *class;
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int nb_inputs;
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char *map_str;
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int *map;
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int nb_map;
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int is_audio;
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int64_t *last_pts;
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AVFrame **frames;
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FFFrameSync fs;
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} StreamSelectContext;
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#define OFFSET(x) offsetof(StreamSelectContext, x)
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#define FLAGS AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_FILTERING_PARAM
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#define TFLAGS AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_FILTERING_PARAM | AV_OPT_FLAG_RUNTIME_PARAM
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static const AVOption streamselect_options[] = {
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{ "inputs", "number of input streams", OFFSET(nb_inputs), AV_OPT_TYPE_INT, {.i64=2}, 2, INT_MAX, .flags=FLAGS },
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{ "map", "input indexes to remap to outputs", OFFSET(map_str), AV_OPT_TYPE_STRING, {.str=NULL}, .flags=TFLAGS },
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{ NULL }
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};
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AVFILTER_DEFINE_CLASS_EXT(streamselect, "(a)streamselect", streamselect_options);
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static int process_frame(FFFrameSync *fs)
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{
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AVFilterContext *ctx = fs->parent;
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StreamSelectContext *s = fs->opaque;
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AVFrame **in = s->frames;
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int i, j, ret = 0, have_out = 0;
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for (i = 0; i < ctx->nb_inputs; i++) {
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if ((ret = ff_framesync_get_frame(&s->fs, i, &in[i], 0)) < 0)
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return ret;
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}
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for (j = 0; j < ctx->nb_inputs; j++) {
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for (i = 0; i < s->nb_map; i++) {
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if (s->map[i] == j) {
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AVFrame *out;
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if (s->is_audio && s->last_pts[j] == in[j]->pts &&
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ctx->outputs[i]->frame_count_in > 0)
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continue;
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out = av_frame_clone(in[j]);
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if (!out)
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return AVERROR(ENOMEM);
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out->pts = av_rescale_q(s->fs.pts, s->fs.time_base, ctx->outputs[i]->time_base);
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s->last_pts[j] = in[j]->pts;
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ret = ff_filter_frame(ctx->outputs[i], out);
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have_out = 1;
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if (ret < 0)
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return ret;
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}
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}
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}
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if (!have_out)
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ff_filter_set_ready(ctx, 100);
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return ret;
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}
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static int activate(AVFilterContext *ctx)
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{
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StreamSelectContext *s = ctx->priv;
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return ff_framesync_activate(&s->fs);
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}
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static int config_output(AVFilterLink *outlink)
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{
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AVFilterContext *ctx = outlink->src;
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StreamSelectContext *s = ctx->priv;
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const int outlink_idx = FF_OUTLINK_IDX(outlink);
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const int inlink_idx = s->map[outlink_idx];
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AVFilterLink *inlink = ctx->inputs[inlink_idx];
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FFFrameSyncIn *in;
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int i, ret;
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av_log(ctx, AV_LOG_VERBOSE, "config output link %d "
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"with settings from input link %d\n",
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outlink_idx, inlink_idx);
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switch (outlink->type) {
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case AVMEDIA_TYPE_VIDEO:
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outlink->w = inlink->w;
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outlink->h = inlink->h;
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outlink->sample_aspect_ratio = inlink->sample_aspect_ratio;
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outlink->frame_rate = inlink->frame_rate;
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break;
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case AVMEDIA_TYPE_AUDIO:
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outlink->sample_rate = inlink->sample_rate;
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outlink->ch_layout.nb_channels = inlink->ch_layout.nb_channels;
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break;
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}
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outlink->time_base = inlink->time_base;
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outlink->format = inlink->format;
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if (s->fs.opaque == s)
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return 0;
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if ((ret = ff_framesync_init(&s->fs, ctx, ctx->nb_inputs)) < 0)
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return ret;
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in = s->fs.in;
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s->fs.opaque = s;
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s->fs.on_event = process_frame;
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for (i = 0; i < ctx->nb_inputs; i++) {
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in[i].time_base = ctx->inputs[i]->time_base;
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in[i].sync = 1;
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in[i].before = EXT_STOP;
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in[i].after = EXT_STOP;
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}
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s->frames = av_calloc(ctx->nb_inputs, sizeof(*s->frames));
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if (!s->frames)
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return AVERROR(ENOMEM);
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return ff_framesync_configure(&s->fs);
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}
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static int parse_definition(AVFilterContext *ctx, int nb_pads, int is_input, int is_audio)
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{
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const char *padtype = is_input ? "in" : "out";
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int i = 0, ret = 0;
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for (i = 0; i < nb_pads; i++) {
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AVFilterPad pad = { 0 };
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pad.type = is_audio ? AVMEDIA_TYPE_AUDIO : AVMEDIA_TYPE_VIDEO;
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pad.name = av_asprintf("%sput%d", padtype, i);
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if (!pad.name)
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return AVERROR(ENOMEM);
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av_log(ctx, AV_LOG_DEBUG, "Add %s pad %s\n", padtype, pad.name);
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if (is_input) {
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ret = ff_append_inpad_free_name(ctx, &pad);
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} else {
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pad.config_props = config_output;
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ret = ff_append_outpad_free_name(ctx, &pad);
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}
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if (ret < 0)
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return ret;
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}
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return 0;
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}
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static int parse_mapping(AVFilterContext *ctx, const char *map)
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{
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StreamSelectContext *s = ctx->priv;
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int *new_map;
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int new_nb_map = 0;
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if (!map) {
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av_log(ctx, AV_LOG_ERROR, "mapping definition is not set\n");
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return AVERROR(EINVAL);
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}
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new_map = av_calloc(s->nb_inputs, sizeof(*new_map));
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if (!new_map)
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return AVERROR(ENOMEM);
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while (1) {
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char *p;
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const int n = strtol(map, &p, 0);
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av_log(ctx, AV_LOG_DEBUG, "n=%d map=%p p=%p\n", n, map, p);
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if (map == p)
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break;
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map = p;
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if (new_nb_map >= s->nb_inputs) {
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av_log(ctx, AV_LOG_ERROR, "Unable to map more than the %d "
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"input pads available\n", s->nb_inputs);
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av_free(new_map);
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return AVERROR(EINVAL);
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}
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if (n < 0 || n >= ctx->nb_inputs) {
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av_log(ctx, AV_LOG_ERROR, "Input stream index %d doesn't exist "
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"(there is only %d input streams defined)\n",
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n, s->nb_inputs);
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av_free(new_map);
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return AVERROR(EINVAL);
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}
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av_log(ctx, AV_LOG_VERBOSE, "Map input stream %d to output stream %d\n", n, new_nb_map);
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new_map[new_nb_map++] = n;
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}
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if (!new_nb_map) {
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av_log(ctx, AV_LOG_ERROR, "invalid mapping\n");
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av_free(new_map);
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return AVERROR(EINVAL);
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}
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av_freep(&s->map);
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s->map = new_map;
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s->nb_map = new_nb_map;
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av_log(ctx, AV_LOG_VERBOSE, "%d map set\n", s->nb_map);
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return 0;
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}
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static int process_command(AVFilterContext *ctx, const char *cmd, const char *args,
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char *res, int res_len, int flags)
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{
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if (!strcmp(cmd, "map")) {
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int ret = parse_mapping(ctx, args);
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if (ret < 0)
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return ret;
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return ff_filter_config_links(ctx);
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}
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return AVERROR(ENOSYS);
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}
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static av_cold int init(AVFilterContext *ctx)
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{
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StreamSelectContext *s = ctx->priv;
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int ret, nb_outputs = 0;
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char *map = s->map_str;
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if (!strcmp(ctx->filter->name, "astreamselect"))
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s->is_audio = 1;
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for (; map;) {
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char *p;
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strtol(map, &p, 0);
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if (map == p)
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break;
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nb_outputs++;
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map = p;
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}
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s->last_pts = av_calloc(s->nb_inputs, sizeof(*s->last_pts));
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if (!s->last_pts)
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return AVERROR(ENOMEM);
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if ((ret = parse_definition(ctx, s->nb_inputs, 1, s->is_audio)) < 0 ||
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(ret = parse_definition(ctx, nb_outputs, 0, s->is_audio)) < 0)
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return ret;
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av_log(ctx, AV_LOG_DEBUG, "Configured with %d inpad and %d outpad\n",
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ctx->nb_inputs, ctx->nb_outputs);
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return parse_mapping(ctx, s->map_str);
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}
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static av_cold void uninit(AVFilterContext *ctx)
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{
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StreamSelectContext *s = ctx->priv;
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av_freep(&s->last_pts);
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av_freep(&s->map);
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av_freep(&s->frames);
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ff_framesync_uninit(&s->fs);
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}
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static int query_formats(AVFilterContext *ctx)
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{
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AVFilterFormats *formats;
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int ret, i;
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for (i = 0; i < ctx->nb_inputs; i++) {
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formats = ff_all_formats(ctx->inputs[i]->type);
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if ((ret = ff_set_common_formats(ctx, formats)) < 0)
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return ret;
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if (ctx->inputs[i]->type == AVMEDIA_TYPE_AUDIO) {
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if ((ret = ff_set_common_all_samplerates (ctx)) < 0 ||
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(ret = ff_set_common_all_channel_counts(ctx)) < 0)
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return ret;
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}
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}
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return 0;
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}
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const AVFilter ff_vf_streamselect = {
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.name = "streamselect",
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.description = NULL_IF_CONFIG_SMALL("Select video streams"),
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.init = init,
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FILTER_QUERY_FUNC(query_formats),
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.process_command = process_command,
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.uninit = uninit,
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.activate = activate,
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.priv_size = sizeof(StreamSelectContext),
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.priv_class = &streamselect_class,
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.flags = AVFILTER_FLAG_DYNAMIC_INPUTS | AVFILTER_FLAG_DYNAMIC_OUTPUTS,
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};
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const AVFilter ff_af_astreamselect = {
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.name = "astreamselect",
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.description = NULL_IF_CONFIG_SMALL("Select audio streams"),
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.priv_class = &streamselect_class,
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.init = init,
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FILTER_QUERY_FUNC(query_formats),
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.process_command = process_command,
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.uninit = uninit,
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.activate = activate,
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.priv_size = sizeof(StreamSelectContext),
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.flags = AVFILTER_FLAG_DYNAMIC_INPUTS | AVFILTER_FLAG_DYNAMIC_OUTPUTS,
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};
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