File size: 9,025 Bytes
8ead80b |
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 |
/*
* Copyright (c) 2013 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
*/
/**
* @file
* audio and video interleaver
*/
#include "config_components.h"
#include "libavutil/avassert.h"
#include "libavutil/avstring.h"
#include "libavutil/opt.h"
#include "avfilter.h"
#include "filters.h"
#include "internal.h"
#include "audio.h"
#include "video.h"
typedef struct InterleaveContext {
const AVClass *class;
int nb_inputs;
int duration_mode;
int64_t pts;
} InterleaveContext;
#define DURATION_LONGEST 0
#define DURATION_SHORTEST 1
#define DURATION_FIRST 2
#define OFFSET(x) offsetof(InterleaveContext, x)
#define DEFINE_OPTIONS(filt_name, flags_) \
static const AVOption filt_name##_options[] = { \
{ "nb_inputs", "set number of inputs", OFFSET(nb_inputs), AV_OPT_TYPE_INT, {.i64 = 2}, 1, INT_MAX, .flags = flags_ }, \
{ "n", "set number of inputs", OFFSET(nb_inputs), AV_OPT_TYPE_INT, {.i64 = 2}, 1, INT_MAX, .flags = flags_ }, \
{ "duration", "how to determine the end-of-stream", \
OFFSET(duration_mode), AV_OPT_TYPE_INT, { .i64 = DURATION_LONGEST }, 0, 2, flags_, "duration" }, \
{ "longest", "Duration of longest input", 0, AV_OPT_TYPE_CONST, { .i64 = DURATION_LONGEST }, 0, 0, flags_, "duration" }, \
{ "shortest", "Duration of shortest input", 0, AV_OPT_TYPE_CONST, { .i64 = DURATION_SHORTEST }, 0, 0, flags_, "duration" }, \
{ "first", "Duration of first input", 0, AV_OPT_TYPE_CONST, { .i64 = DURATION_FIRST }, 0, 0, flags_, "duration" }, \
{ NULL } \
}
static int activate(AVFilterContext *ctx)
{
AVFilterLink *outlink = ctx->outputs[0];
InterleaveContext *s = ctx->priv;
int64_t q_pts, pts = INT64_MAX;
int i, nb_eofs = 0, input_idx = -1;
int first_eof = 0;
int64_t rpts;
int status;
int nb_inputs_with_frames = 0;
FF_FILTER_FORWARD_STATUS_BACK_ALL(outlink, ctx);
for (i = 0; i < ctx->nb_inputs; i++) {
int is_eof = !!ff_inlink_acknowledge_status(ctx->inputs[i], &status, &rpts);
nb_eofs += is_eof;
if (i == 0)
first_eof = is_eof;
}
if ((nb_eofs > 0 && s->duration_mode == DURATION_SHORTEST) ||
(nb_eofs == ctx->nb_inputs && s->duration_mode == DURATION_LONGEST) ||
(first_eof && s->duration_mode == DURATION_FIRST)) {
ff_outlink_set_status(outlink, AVERROR_EOF, s->pts);
return 0;
}
for (i = 0; i < ctx->nb_inputs; i++) {
if (!ff_inlink_queued_frames(ctx->inputs[i]))
continue;
nb_inputs_with_frames++;
}
if (nb_inputs_with_frames >= ctx->nb_inputs - nb_eofs) {
for (i = 0; i < ctx->nb_inputs; i++) {
AVFrame *frame;
if (ff_inlink_queued_frames(ctx->inputs[i]) == 0)
continue;
frame = ff_inlink_peek_frame(ctx->inputs[i], 0);
if (frame->pts == AV_NOPTS_VALUE) {
int ret;
av_log(ctx, AV_LOG_WARNING,
"NOPTS value for input frame cannot be accepted, frame discarded\n");
ret = ff_inlink_consume_frame(ctx->inputs[i], &frame);
if (ret < 0)
return ret;
av_frame_free(&frame);
return AVERROR_INVALIDDATA;
}
q_pts = av_rescale_q(frame->pts, ctx->inputs[i]->time_base, AV_TIME_BASE_Q);
if (q_pts < pts) {
pts = q_pts;
input_idx = i;
}
}
if (input_idx >= 0) {
AVFrame *frame;
int ret;
ret = ff_inlink_consume_frame(ctx->inputs[input_idx], &frame);
if (ret < 0)
return ret;
frame->pts = s->pts = pts;
return ff_filter_frame(outlink, frame);
}
}
for (i = 0; i < ctx->nb_inputs; i++) {
if (ff_inlink_queued_frames(ctx->inputs[i]))
continue;
if (ff_outlink_frame_wanted(outlink) &&
!ff_outlink_get_status(ctx->inputs[i])) {
ff_inlink_request_frame(ctx->inputs[i]);
return 0;
}
}
if (i == ctx->nb_inputs - nb_eofs && ff_outlink_frame_wanted(outlink)) {
ff_filter_set_ready(ctx, 100);
return 0;
}
return FFERROR_NOT_READY;
}
static av_cold int init(AVFilterContext *ctx)
{
InterleaveContext *s = ctx->priv;
const AVFilterPad *outpad = &ctx->filter->outputs[0];
int i, ret;
for (i = 0; i < s->nb_inputs; i++) {
AVFilterPad inpad = { 0 };
inpad.name = av_asprintf("input%d", i);
if (!inpad.name)
return AVERROR(ENOMEM);
inpad.type = outpad->type;
switch (outpad->type) {
case AVMEDIA_TYPE_VIDEO:
inpad.get_buffer.video = ff_null_get_video_buffer; break;
case AVMEDIA_TYPE_AUDIO:
inpad.get_buffer.audio = ff_null_get_audio_buffer; break;
default:
av_assert0(0);
}
if ((ret = ff_append_inpad_free_name(ctx, &inpad)) < 0)
return ret;
}
return 0;
}
static int config_output(AVFilterLink *outlink)
{
AVFilterContext *ctx = outlink->src;
AVFilterLink *inlink0 = ctx->inputs[0];
int i;
if (outlink->type == AVMEDIA_TYPE_VIDEO) {
outlink->time_base = AV_TIME_BASE_Q;
outlink->w = inlink0->w;
outlink->h = inlink0->h;
outlink->sample_aspect_ratio = inlink0->sample_aspect_ratio;
outlink->format = inlink0->format;
outlink->frame_rate = (AVRational) {1, 0};
for (i = 1; i < ctx->nb_inputs; i++) {
AVFilterLink *inlink = ctx->inputs[i];
if (outlink->w != inlink->w ||
outlink->h != inlink->h ||
outlink->sample_aspect_ratio.num != inlink->sample_aspect_ratio.num ||
outlink->sample_aspect_ratio.den != inlink->sample_aspect_ratio.den) {
av_log(ctx, AV_LOG_ERROR, "Parameters for input link %s "
"(size %dx%d, SAR %d:%d) do not match the corresponding "
"output link parameters (%dx%d, SAR %d:%d)\n",
ctx->input_pads[i].name, inlink->w, inlink->h,
inlink->sample_aspect_ratio.num,
inlink->sample_aspect_ratio.den,
outlink->w, outlink->h,
outlink->sample_aspect_ratio.num,
outlink->sample_aspect_ratio.den);
return AVERROR(EINVAL);
}
}
}
return 0;
}
#if CONFIG_INTERLEAVE_FILTER
DEFINE_OPTIONS(interleave, AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_FILTERING_PARAM);
AVFILTER_DEFINE_CLASS(interleave);
static const AVFilterPad interleave_outputs[] = {
{
.name = "default",
.type = AVMEDIA_TYPE_VIDEO,
.config_props = config_output,
},
};
const AVFilter ff_vf_interleave = {
.name = "interleave",
.description = NULL_IF_CONFIG_SMALL("Temporally interleave video inputs."),
.priv_size = sizeof(InterleaveContext),
.init = init,
.activate = activate,
FILTER_OUTPUTS(interleave_outputs),
.priv_class = &interleave_class,
.flags = AVFILTER_FLAG_DYNAMIC_INPUTS,
};
#endif
#if CONFIG_AINTERLEAVE_FILTER
DEFINE_OPTIONS(ainterleave, AV_OPT_FLAG_AUDIO_PARAM|AV_OPT_FLAG_FILTERING_PARAM);
AVFILTER_DEFINE_CLASS(ainterleave);
static const AVFilterPad ainterleave_outputs[] = {
{
.name = "default",
.type = AVMEDIA_TYPE_AUDIO,
.config_props = config_output,
},
};
const AVFilter ff_af_ainterleave = {
.name = "ainterleave",
.description = NULL_IF_CONFIG_SMALL("Temporally interleave audio inputs."),
.priv_size = sizeof(InterleaveContext),
.init = init,
.activate = activate,
FILTER_OUTPUTS(ainterleave_outputs),
.priv_class = &ainterleave_class,
.flags = AVFILTER_FLAG_DYNAMIC_INPUTS,
};
#endif
|