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FFmpeg/libavfilter/src_movie.c
Andreas Rheinhardt 790f793844 avutil/common: Don't auto-include mem.h 
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>
2024-03-31 00:08:43 +01:00

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/*
* Copyright (c) 2010 Stefano Sabatini
* Copyright (c) 2008 Victor Paesa
*
* 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
* movie video source
*
* @todo support a PTS correction mechanism
*/
#include "config_components.h"
#include <stdint.h>
#include "libavutil/attributes.h"
#include "libavutil/avstring.h"
#include "libavutil/channel_layout.h"
#include "libavutil/mem.h"
#include "libavutil/opt.h"
#include "libavutil/internal.h"
#include "libavcodec/avcodec.h"
#include "libavformat/avformat.h"
#include "audio.h"
#include "avfilter.h"
#include "filters.h"
#include "formats.h"
#include "internal.h"
#include "video.h"
typedef struct MovieStream {
AVFilterLink *link;
AVStream *st;
AVCodecContext *codec_ctx;
int64_t discontinuity_threshold;
int64_t last_pts;
AVFrame *frame;
int eof;
} MovieStream;
typedef struct MovieContext {
/* common A/V fields */
const AVClass *class;
int64_t seek_point; ///< seekpoint in microseconds
double seek_point_d;
char *format_name;
char *file_name;
char *stream_specs; /**< user-provided list of streams, separated by + */
int stream_index; /**< for compatibility */
int loop_count;
int64_t discontinuity_threshold;
int64_t ts_offset;
int dec_threads;
AVPacket *pkt;
AVFormatContext *format_ctx;
int eof;
int max_stream_index; /**< max stream # actually used for output */
MovieStream *st; /**< array of all streams, one per output */
int *out_index; /**< stream number -> output number map, or -1 */
AVDictionary *format_opts;
} MovieContext;
#define OFFSET(x) offsetof(MovieContext, x)
#define FLAGS AV_OPT_FLAG_FILTERING_PARAM | AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_VIDEO_PARAM
static const AVOption movie_options[]= {
{ "filename", NULL, OFFSET(file_name), AV_OPT_TYPE_STRING, .flags = FLAGS },
{ "format_name", "set format name", OFFSET(format_name), AV_OPT_TYPE_STRING, .flags = FLAGS },
{ "f", "set format name", OFFSET(format_name), AV_OPT_TYPE_STRING, .flags = FLAGS },
{ "stream_index", "set stream index", OFFSET(stream_index), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, INT_MAX, FLAGS },
{ "si", "set stream index", OFFSET(stream_index), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, INT_MAX, FLAGS },
{ "seek_point", "set seekpoint (seconds)", OFFSET(seek_point_d), AV_OPT_TYPE_DOUBLE, { .dbl = 0 }, 0, (INT64_MAX-1) / 1000000, FLAGS },
{ "sp", "set seekpoint (seconds)", OFFSET(seek_point_d), AV_OPT_TYPE_DOUBLE, { .dbl = 0 }, 0, (INT64_MAX-1) / 1000000, FLAGS },
{ "streams", "set streams", OFFSET(stream_specs), AV_OPT_TYPE_STRING, {.str = 0}, 0, 0, FLAGS },
{ "s", "set streams", OFFSET(stream_specs), AV_OPT_TYPE_STRING, {.str = 0}, 0, 0, FLAGS },
{ "loop", "set loop count", OFFSET(loop_count), AV_OPT_TYPE_INT, {.i64 = 1}, 0, INT_MAX, FLAGS },
{ "discontinuity", "set discontinuity threshold", OFFSET(discontinuity_threshold), AV_OPT_TYPE_DURATION, {.i64 = 0}, 0, INT64_MAX, FLAGS },
{ "dec_threads", "set the number of threads for decoding", OFFSET(dec_threads), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, FLAGS },
{ "format_opts", "set format options for the opened file", OFFSET(format_opts), AV_OPT_TYPE_DICT, {.str = NULL}, 0, 0, FLAGS},
{ NULL },
};
static int movie_config_output_props(AVFilterLink *outlink);
static AVStream *find_stream(void *log, AVFormatContext *avf, const char *spec)
{
int i, ret, already = 0, stream_id = -1;
char type_char[2], dummy;
AVStream *found = NULL;
enum AVMediaType type;
ret = sscanf(spec, "d%1[av]%d%c", type_char, &stream_id, &dummy);
if (ret >= 1 && ret <= 2) {
type = type_char[0] == 'v' ? AVMEDIA_TYPE_VIDEO : AVMEDIA_TYPE_AUDIO;
ret = av_find_best_stream(avf, type, stream_id, -1, NULL, 0);
if (ret < 0) {
av_log(log, AV_LOG_ERROR, "No %s stream with index '%d' found\n",
av_get_media_type_string(type), stream_id);
return NULL;
}
return avf->streams[ret];
}
for (i = 0; i < avf->nb_streams; i++) {
ret = avformat_match_stream_specifier(avf, avf->streams[i], spec);
if (ret < 0) {
av_log(log, AV_LOG_ERROR,
"Invalid stream specifier \"%s\"\n", spec);
return NULL;
}
if (!ret)
continue;
if (avf->streams[i]->discard != AVDISCARD_ALL) {
already++;
continue;
}
if (found) {
av_log(log, AV_LOG_WARNING,
"Ambiguous stream specifier \"%s\", using #%d\n", spec, i);
break;
}
found = avf->streams[i];
}
if (!found) {
av_log(log, AV_LOG_WARNING, "Stream specifier \"%s\" %s\n", spec,
already ? "matched only already used streams" :
"did not match any stream");
return NULL;
}
if (found->codecpar->codec_type != AVMEDIA_TYPE_VIDEO &&
found->codecpar->codec_type != AVMEDIA_TYPE_AUDIO) {
av_log(log, AV_LOG_ERROR, "Stream specifier \"%s\" matched a %s stream,"
"currently unsupported by libavfilter\n", spec,
av_get_media_type_string(found->codecpar->codec_type));
return NULL;
}
return found;
}
static int get_buffer(AVCodecContext *avctx, AVFrame *frame, int flags)
{
int linesize_align[AV_NUM_DATA_POINTERS];
MovieStream *st = avctx->opaque;
AVFilterLink *outlink = st->link;
int w, h, ow, oh, copy = 0;
AVFrame *new;
h = oh = frame->height;
w = ow = frame->width;
copy = frame->format != outlink->format;
switch (avctx->codec_type) {
case AVMEDIA_TYPE_VIDEO:
if (w != outlink->w || h != outlink->h)
copy |= 1;
break;
case AVMEDIA_TYPE_AUDIO:
if (outlink->sample_rate != frame->sample_rate ||
av_channel_layout_compare(&outlink->ch_layout, &frame->ch_layout))
copy |= 1;
break;
}
if (copy || !(avctx->codec->capabilities & AV_CODEC_CAP_DR1))
return avcodec_default_get_buffer2(avctx, frame, flags);
switch (avctx->codec_type) {
case AVMEDIA_TYPE_VIDEO:
avcodec_align_dimensions2(avctx, &w, &h, linesize_align);
new = ff_default_get_video_buffer(outlink, w, h);
break;
case AVMEDIA_TYPE_AUDIO:
new = ff_default_get_audio_buffer(outlink, frame->nb_samples);
break;
default:
return -1;
}
av_frame_copy_props(new, frame);
av_frame_unref(frame);
av_frame_move_ref(frame, new);
av_frame_free(&new);
frame->width = ow;
frame->height = oh;
return 0;
}
static int open_stream(AVFilterContext *ctx, MovieStream *st, int dec_threads)
{
const AVCodec *codec;
int ret;
codec = avcodec_find_decoder(st->st->codecpar->codec_id);
if (!codec) {
av_log(ctx, AV_LOG_ERROR, "Failed to find any codec\n");
return AVERROR(EINVAL);
}
st->codec_ctx = avcodec_alloc_context3(codec);
if (!st->codec_ctx)
return AVERROR(ENOMEM);
st->codec_ctx->opaque = st;
st->codec_ctx->get_buffer2 = get_buffer;
ret = avcodec_parameters_to_context(st->codec_ctx, st->st->codecpar);
if (ret < 0)
return ret;
if (!dec_threads)
dec_threads = ff_filter_get_nb_threads(ctx);
st->codec_ctx->thread_count = dec_threads;
if ((ret = avcodec_open2(st->codec_ctx, codec, NULL)) < 0) {
av_log(ctx, AV_LOG_ERROR, "Failed to open codec\n");
return ret;
}
return 0;
}
static int guess_channel_layout(MovieStream *st, int st_index, void *log_ctx)
{
AVCodecParameters *dec_par = st->st->codecpar;
char buf[256];
AVChannelLayout chl = { 0 };
av_channel_layout_default(&chl, dec_par->ch_layout.nb_channels);
if (!KNOWN(&chl)) {
av_log(log_ctx, AV_LOG_WARNING,
"Channel layout is not set in stream %d, and could not "
"be guessed from the number of channels (%d)\n",
st_index, dec_par->ch_layout.nb_channels);
return av_channel_layout_copy(&dec_par->ch_layout, &chl);
}
av_channel_layout_describe(&chl, buf, sizeof(buf));
av_log(log_ctx, AV_LOG_WARNING,
"Channel layout is not set in output stream %d, "
"guessed channel layout is '%s'\n",
st_index, buf);
return av_channel_layout_copy(&dec_par->ch_layout, &chl);
}
static av_cold int movie_common_init(AVFilterContext *ctx)
{
MovieContext *movie = ctx->priv;
const AVInputFormat *iformat = NULL;
int64_t timestamp;
int nb_streams = 1, ret, i;
char default_streams[16], *stream_specs, *spec, *cursor;
AVStream *st;
if (!movie->file_name) {
av_log(ctx, AV_LOG_ERROR, "No filename provided!\n");
return AVERROR(EINVAL);
}
movie->seek_point = movie->seek_point_d * 1000000 + 0.5;
stream_specs = movie->stream_specs;
if (!stream_specs) {
snprintf(default_streams, sizeof(default_streams), "d%c%d",
!strcmp(ctx->filter->name, "amovie") ? 'a' : 'v',
movie->stream_index);
stream_specs = default_streams;
}
for (cursor = stream_specs; *cursor; cursor++)
if (*cursor == '+')
nb_streams++;
if (movie->loop_count != 1 && nb_streams != 1) {
av_log(ctx, AV_LOG_ERROR,
"Loop with several streams is currently unsupported\n");
return AVERROR_PATCHWELCOME;
}
// Try to find the movie format (container)
iformat = movie->format_name ? av_find_input_format(movie->format_name) : NULL;
movie->format_ctx = NULL;
if ((ret = avformat_open_input(&movie->format_ctx, movie->file_name, iformat, &movie->format_opts)) < 0) {
av_log(ctx, AV_LOG_ERROR,
"Failed to avformat_open_input '%s'\n", movie->file_name);
return ret;
}
if ((ret = avformat_find_stream_info(movie->format_ctx, NULL)) < 0)
av_log(ctx, AV_LOG_WARNING, "Failed to find stream info\n");
// if seeking requested, we execute it
if (movie->seek_point > 0) {
timestamp = movie->seek_point;
// add the stream start time, should it exist
if (movie->format_ctx->start_time != AV_NOPTS_VALUE) {
if (timestamp > 0 && movie->format_ctx->start_time > INT64_MAX - timestamp) {
av_log(ctx, AV_LOG_ERROR,
"%s: seek value overflow with start_time:%"PRId64" seek_point:%"PRId64"\n",
movie->file_name, movie->format_ctx->start_time, movie->seek_point);
return AVERROR(EINVAL);
}
timestamp += movie->format_ctx->start_time;
}
if ((ret = av_seek_frame(movie->format_ctx, -1, timestamp, AVSEEK_FLAG_BACKWARD)) < 0) {
av_log(ctx, AV_LOG_ERROR, "%s: could not seek to position %"PRId64"\n",
movie->file_name, timestamp);
return ret;
}
}
for (i = 0; i < movie->format_ctx->nb_streams; i++)
movie->format_ctx->streams[i]->discard = AVDISCARD_ALL;
movie->pkt = av_packet_alloc();
if (!movie->pkt)
return AVERROR(ENOMEM);
movie->st = av_calloc(nb_streams, sizeof(*movie->st));
if (!movie->st)
return AVERROR(ENOMEM);
for (i = 0; i < nb_streams; i++) {
spec = av_strtok(stream_specs, "+", &cursor);
if (!spec)
return AVERROR_BUG;
stream_specs = NULL; /* for next strtok */
st = find_stream(ctx, movie->format_ctx, spec);
if (!st)
return AVERROR(EINVAL);
st->discard = AVDISCARD_DEFAULT;
movie->st[i].st = st;
movie->max_stream_index = FFMAX(movie->max_stream_index, st->index);
movie->st[i].discontinuity_threshold =
av_rescale_q(movie->discontinuity_threshold, AV_TIME_BASE_Q, st->time_base);
movie->st[i].frame = av_frame_alloc();
if (!movie->st[i].frame)
return AVERROR(ENOMEM);
}
if (av_strtok(NULL, "+", &cursor))
return AVERROR_BUG;
movie->out_index = av_calloc(movie->max_stream_index + 1,
sizeof(*movie->out_index));
if (!movie->out_index)
return AVERROR(ENOMEM);
for (i = 0; i <= movie->max_stream_index; i++)
movie->out_index[i] = -1;
for (i = 0; i < nb_streams; i++) {
AVFilterPad pad = { 0 };
movie->out_index[movie->st[i].st->index] = i;
pad.type = movie->st[i].st->codecpar->codec_type;
pad.name = av_asprintf("out%d", i);
if (!pad.name)
return AVERROR(ENOMEM);
pad.config_props = movie_config_output_props;
if ((ret = ff_append_outpad_free_name(ctx, &pad)) < 0)
return ret;
if ( movie->st[i].st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO &&
!KNOWN(&movie->st[i].st->codecpar->ch_layout)) {
ret = guess_channel_layout(&movie->st[i], i, ctx);
if (ret < 0)
return ret;
}
ret = open_stream(ctx, &movie->st[i], movie->dec_threads);
if (ret < 0)
return ret;
}
av_log(ctx, AV_LOG_VERBOSE, "seek_point:%"PRIi64" format_name:%s file_name:%s stream_index:%d\n",
movie->seek_point, movie->format_name, movie->file_name,
movie->stream_index);
return 0;
}
static av_cold void movie_uninit(AVFilterContext *ctx)
{
MovieContext *movie = ctx->priv;
int i;
for (i = 0; i < ctx->nb_outputs; i++) {
if (movie->st[i].st)
avcodec_free_context(&movie->st[i].codec_ctx);
av_frame_free(&movie->st[i].frame);
}
av_packet_free(&movie->pkt);
av_freep(&movie->st);
av_freep(&movie->out_index);
if (movie->format_ctx)
avformat_close_input(&movie->format_ctx);
}
static int movie_query_formats(AVFilterContext *ctx)
{
MovieContext *movie = ctx->priv;
int list[] = { 0, -1 };
AVChannelLayout list64[] = { { 0 }, { 0 } };
int i, ret;
for (i = 0; i < ctx->nb_outputs; i++) {
MovieStream *st = &movie->st[i];
AVCodecParameters *c = st->st->codecpar;
AVFilterLink *outlink = ctx->outputs[i];
switch (c->codec_type) {
case AVMEDIA_TYPE_VIDEO:
list[0] = c->format;
if ((ret = ff_formats_ref(ff_make_format_list(list), &outlink->incfg.formats)) < 0)
return ret;
break;
case AVMEDIA_TYPE_AUDIO:
list[0] = c->format;
if ((ret = ff_formats_ref(ff_make_format_list(list), &outlink->incfg.formats)) < 0)
return ret;
list[0] = c->sample_rate;
if ((ret = ff_formats_ref(ff_make_format_list(list), &outlink->incfg.samplerates)) < 0)
return ret;
list64[0] = c->ch_layout;
if ((ret = ff_channel_layouts_ref(ff_make_channel_layout_list(list64),
&outlink->incfg.channel_layouts)) < 0)
return ret;
break;
}
}
return 0;
}
static int movie_config_output_props(AVFilterLink *outlink)
{
AVFilterContext *ctx = outlink->src;
MovieContext *movie = ctx->priv;
unsigned out_id = FF_OUTLINK_IDX(outlink);
MovieStream *st = &movie->st[out_id];
AVCodecParameters *c = st->st->codecpar;
outlink->time_base = st->st->time_base;
switch (c->codec_type) {
case AVMEDIA_TYPE_VIDEO:
outlink->w = c->width;
outlink->h = c->height;
outlink->frame_rate = st->st->r_frame_rate;
break;
case AVMEDIA_TYPE_AUDIO:
break;
}
st->link = outlink;
return 0;
}
static int rewind_file(AVFilterContext *ctx)
{
MovieContext *movie = ctx->priv;
int64_t timestamp = movie->seek_point;
int ret, i;
if (movie->format_ctx->start_time != AV_NOPTS_VALUE)
timestamp += movie->format_ctx->start_time;
ret = av_seek_frame(movie->format_ctx, -1, timestamp, AVSEEK_FLAG_BACKWARD);
if (ret < 0) {
av_log(ctx, AV_LOG_ERROR, "Unable to loop: %s\n", av_err2str(ret));
movie->loop_count = 1; /* do not try again */
return ret;
}
for (i = 0; i < ctx->nb_outputs; i++) {
avcodec_flush_buffers(movie->st[i].codec_ctx);
}
return 0;
}
static int flush_decoder(AVFilterContext *ctx, int i)
{
MovieContext *movie = ctx->priv;
AVCodecContext *dec = movie->st[i].codec_ctx;
return avcodec_send_packet(dec, NULL);
}
static int decode_packet(AVFilterContext *ctx, int i)
{
AVFilterLink *outlink = ctx->outputs[i];
MovieContext *movie = ctx->priv;
MovieStream *st = &movie->st[i];
AVCodecContext *dec = movie->st[i].codec_ctx;
AVFrame *frame = movie->st[i].frame;
AVPacket *pkt = movie->pkt;
int ret = 0;
// submit the packet to the decoder
if (!movie->eof) {
ret = avcodec_send_packet(dec, pkt);
if (ret < 0)
return ret;
}
// get all the available frames from the decoder
if (ret >= 0) {
ret = avcodec_receive_frame(dec, frame);
if (ret < 0) {
// those two return values are special and mean there is no output
// frame available, but there were no errors during decoding
if (ret == AVERROR_EOF || ret == AVERROR(EAGAIN))
return 0;
return ret;
}
frame->pts = frame->best_effort_timestamp;
if (frame->pts != AV_NOPTS_VALUE) {
if (movie->ts_offset)
frame->pts += av_rescale_q_rnd(movie->ts_offset, AV_TIME_BASE_Q, outlink->time_base, AV_ROUND_UP);
if (st->discontinuity_threshold) {
if (st->last_pts != AV_NOPTS_VALUE) {
int64_t diff = frame->pts - st->last_pts;
if (diff < 0 || diff > st->discontinuity_threshold) {
av_log(ctx, AV_LOG_VERBOSE, "Discontinuity in stream:%d diff:%"PRId64"\n", i, diff);
movie->ts_offset += av_rescale_q_rnd(-diff, outlink->time_base, AV_TIME_BASE_Q, AV_ROUND_UP);
frame->pts -= diff;
}
}
}
st->last_pts = frame->pts;
}
ret = ff_filter_frame(outlink, av_frame_clone(frame));
if (ret < 0)
return ret;
if (ret == 0)
return 1;
}
return 0;
}
static int activate(AVFilterContext *ctx)
{
MovieContext *movie = ctx->priv;
int wanted = 0, ret;
for (int i = 0; i < ctx->nb_outputs; i++) {
if (ff_outlink_frame_wanted(ctx->outputs[i]))
wanted++;
}
if (wanted == 0)
return FFERROR_NOT_READY;
if (!movie->eof) {
ret = av_read_frame(movie->format_ctx, movie->pkt);
if (ret < 0) {
movie->eof = 1;
for (int i = 0; i < ctx->nb_outputs; i++)
flush_decoder(ctx, i);
ff_filter_set_ready(ctx, 100);
return 0;
} else {
int pkt_out_id = movie->pkt->stream_index > movie->max_stream_index ? -1 :
movie->out_index[movie->pkt->stream_index];
if (pkt_out_id >= 0) {
ret = decode_packet(ctx, pkt_out_id);
}
av_packet_unref(movie->pkt);
ff_filter_set_ready(ctx, 100);
return (ret <= 0) ? ret : 0;
}
} else {
int nb_eofs = 0;
for (int i = 0; i < ctx->nb_outputs; i++) {
if (!movie->st[i].eof) {
ret = decode_packet(ctx, i);
if (ret <= 0)
movie->st[i].eof = 1;
}
nb_eofs += movie->st[i].eof == 1;
}
if (nb_eofs == ctx->nb_outputs && movie->loop_count != 1) {
ret = rewind_file(ctx);
if (ret < 0)
return ret;
movie->loop_count -= movie->loop_count > 1;
av_log(ctx, AV_LOG_VERBOSE, "Stream finished, looping.\n");
ff_filter_set_ready(ctx, 100);
for (int i = 0; i < ctx->nb_outputs; i++)
movie->st[i].eof = 0;
movie->eof = 0;
return 0;
} else {
for (int i = 0; i < ctx->nb_outputs; i++) {
if (movie->st[i].eof) {
ff_outlink_set_status(ctx->outputs[i], AVERROR_EOF, movie->st[i].last_pts);
nb_eofs++;
}
}
}
if (nb_eofs < ctx->nb_outputs)
ff_filter_set_ready(ctx, 100);
return 0;
}
return FFERROR_NOT_READY;
}
static int process_command(AVFilterContext *ctx, const char *cmd, const char *args,
char *res, int res_len, int flags)
{
MovieContext *movie = ctx->priv;
int ret = AVERROR(ENOSYS);
if (!strcmp(cmd, "seek")) {
int idx, flags, i;
int64_t ts;
char tail[2];
if (sscanf(args, "%i|%"SCNi64"|%i %1s", &idx, &ts, &flags, tail) != 3)
return AVERROR(EINVAL);
ret = av_seek_frame(movie->format_ctx, idx, ts, flags);
if (ret < 0)
return ret;
for (i = 0; i < ctx->nb_outputs; i++) {
avcodec_flush_buffers(movie->st[i].codec_ctx);
}
return ret;
} else if (!strcmp(cmd, "get_duration")) {
int print_len;
char tail[2];
if (!res || res_len <= 0)
return AVERROR(EINVAL);
if (args && sscanf(args, "%1s", tail) == 1)
return AVERROR(EINVAL);
print_len = snprintf(res, res_len, "%"PRId64, movie->format_ctx->duration);
if (print_len < 0 || print_len >= res_len)
return AVERROR(EINVAL);
return 0;
}
return ret;
}
AVFILTER_DEFINE_CLASS_EXT(movie, "(a)movie", movie_options);
#if CONFIG_MOVIE_FILTER
const AVFilter ff_avsrc_movie = {
.name = "movie",
.description = NULL_IF_CONFIG_SMALL("Read from a movie source."),
.priv_size = sizeof(MovieContext),
.priv_class = &movie_class,
.init = movie_common_init,
.activate = activate,
.uninit = movie_uninit,
FILTER_QUERY_FUNC(movie_query_formats),
.inputs = NULL,
.outputs = NULL,
.flags = AVFILTER_FLAG_DYNAMIC_OUTPUTS,
.process_command = process_command
};
#endif /* CONFIG_MOVIE_FILTER */
#if CONFIG_AMOVIE_FILTER
const AVFilter ff_avsrc_amovie = {
.name = "amovie",
.description = NULL_IF_CONFIG_SMALL("Read audio from a movie source."),
.priv_class = &movie_class,
.priv_size = sizeof(MovieContext),
.init = movie_common_init,
.activate = activate,
.uninit = movie_uninit,
FILTER_QUERY_FUNC(movie_query_formats),
.inputs = NULL,
.outputs = NULL,
.flags = AVFILTER_FLAG_DYNAMIC_OUTPUTS,
.process_command = process_command,
};
#endif /* CONFIG_AMOVIE_FILTER */
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