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fftools/ffmpeg: rewrite checking whether codec AVOptions have been used

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Share the code between encoding and decoding. Instead of checking every
stream's options dictionary (which is also used for other purposes),
track all used options in a dedicated dictionary.
This commit is contained in:
Anton Khirnov 2024-04-09 12:56:46 +02:00
parent fc446eea05
commit f1664aabb1
11 changed files with 91 additions and 116 deletions
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17
fftools/cmdutils.c
View File

@ -986,7 +986,7 @@ int check_stream_specifier(AVFormatContext *s, AVStream *st, const char *spec)
int filter_codec_opts(const AVDictionary *opts, enum AVCodecID codec_id,
AVFormatContext *s, AVStream *st, const AVCodec *codec,
AVDictionary **dst)
AVDictionary **dst, AVDictionary **opts_used)
{
AVDictionary *ret = NULL;
const AVDictionaryEntry *t = NULL;
@ -1013,6 +1013,7 @@ int filter_codec_opts(const AVDictionary *opts, enum AVCodecID codec_id,
while (t = av_dict_iterate(opts, t)) {
const AVClass *priv_class;
char *p = strchr(t->key, ':');
int used = 0;
/* check stream specification in opt name */
if (p) {
@ -1030,15 +1031,21 @@ int filter_codec_opts(const AVDictionary *opts, enum AVCodecID codec_id,
!codec ||
((priv_class = codec->priv_class) &&
av_opt_find(&priv_class, t->key, NULL, flags,
AV_OPT_SEARCH_FAKE_OBJ)))
AV_OPT_SEARCH_FAKE_OBJ))) {
av_dict_set(&ret, t->key, t->value, 0);
else if (t->key[0] == prefix &&
used = 1;
} else if (t->key[0] == prefix &&
av_opt_find(&cc, t->key + 1, NULL, flags,
AV_OPT_SEARCH_FAKE_OBJ))
AV_OPT_SEARCH_FAKE_OBJ)) {
av_dict_set(&ret, t->key + 1, t->value, 0);
used = 1;
}
if (p)
*p = ':';
if (used && opts_used)
av_dict_set(opts_used, t->key, "", 0);
}
*dst = ret;
@ -1063,7 +1070,7 @@ int setup_find_stream_info_opts(AVFormatContext *s,
for (int i = 0; i < s->nb_streams; i++) {
ret = filter_codec_opts(codec_opts, s->streams[i]->codecpar->codec_id,
s, s->streams[i], NULL, &opts[i]);
s, s->streams[i], NULL, &opts[i], NULL);
if (ret < 0)
goto fail;
}

4
fftools/cmdutils.h
View File

@ -371,11 +371,13 @@ int check_stream_specifier(AVFormatContext *s, AVStream *st, const char *spec);
* @param codec The particular codec for which the options should be filtered.
* If null, the default one is looked up according to the codec id.
* @param dst a pointer to the created dictionary
* @param opts_used if non-NULL, every option stored in dst is also stored here,
* with specifiers preserved
* @return a non-negative number on success, a negative error code on failure
*/
int filter_codec_opts(const AVDictionary *opts, enum AVCodecID codec_id,
AVFormatContext *s, AVStream *st, const AVCodec *codec,
AVDictionary **dst);
AVDictionary **dst, AVDictionary **opts_used);
/**
* Setup AVCodecContext options for avformat_find_stream_info().

50
fftools/ffmpeg.c
View File

@ -474,6 +474,56 @@ const FrameData *packet_data_c(AVPacket *pkt)
return ret < 0 ? NULL : (const FrameData*)pkt->opaque_ref->data;
}
int check_avoptions_used(const AVDictionary *opts, const AVDictionary *opts_used,
void *logctx, int decode)
{
const AVClass *class = avcodec_get_class();
const AVClass *fclass = avformat_get_class();
const int flag = decode ? AV_OPT_FLAG_DECODING_PARAM :
AV_OPT_FLAG_ENCODING_PARAM;
const AVDictionaryEntry *e = NULL;
while ((e = av_dict_iterate(opts, e))) {
const AVOption *option, *foption;
char *optname, *p;
if (av_dict_get(opts_used, e->key, NULL, 0))
continue;
optname = av_strdup(e->key);
if (!optname)
return AVERROR(ENOMEM);
p = strchr(optname, ':');
if (p)
*p = 0;
option = av_opt_find(&class, optname, NULL, 0,
AV_OPT_SEARCH_CHILDREN | AV_OPT_SEARCH_FAKE_OBJ);
foption = av_opt_find(&fclass, optname, NULL, 0,
AV_OPT_SEARCH_CHILDREN | AV_OPT_SEARCH_FAKE_OBJ);
av_freep(&optname);
if (!option || foption)
continue;
if (!(option->flags & flag)) {
av_log(logctx, AV_LOG_ERROR, "Codec AVOption %s (%s) is not a %s "
"option.\n", e->key, option->help ? option->help : "",
decode ? "decoding" : "encoding");
return AVERROR(EINVAL);
}
av_log(logctx, AV_LOG_WARNING, "Codec AVOption %s (%s) has not been used "
"for any stream. The most likely reason is either wrong type "
"(e.g. a video option with no video streams) or that it is a "
"private option of some decoder which was not actually used "
"for any stream.\n", e->key, option->help ? option->help : "");
}
return 0;
}
void update_benchmark(const char *fmt, ...)
{
if (do_benchmark_all) {

4
fftools/ffmpeg.h
View File

@ -710,8 +710,10 @@ void term_exit(void);
void show_usage(void);
int check_avoptions_used(const AVDictionary *opts, const AVDictionary *opts_used,
void *logctx, int decode);
int assert_file_overwrite(const char *filename);
AVDictionary *strip_specifiers(const AVDictionary *dict);
int find_codec(void *logctx, const char *name,
enum AVMediaType type, int encoder, const AVCodec **codec);
int parse_and_set_vsync(const char *arg, int *vsync_var, int file_idx, int st_idx, int is_global);

50
fftools/ffmpeg_demux.c
View File

@ -1207,7 +1207,7 @@ static DemuxStream *demux_stream_alloc(Demuxer *d, AVStream *st)
return ds;
}
static int ist_add(const OptionsContext *o, Demuxer *d, AVStream *st)
static int ist_add(const OptionsContext *o, Demuxer *d, AVStream *st, AVDictionary **opts_used)
{
AVFormatContext *ic = d->f.ctx;
AVCodecParameters *par = st->codecpar;
@ -1334,7 +1334,7 @@ static int ist_add(const OptionsContext *o, Demuxer *d, AVStream *st)
if (ist->dec) {
ret = filter_codec_opts(o->g->codec_opts, ist->st->codecpar->codec_id,
ic, st, ist->dec, &ds->decoder_opts);
ic, st, ist->dec, &ds->decoder_opts, opts_used);
if (ret < 0)
return ret;
}
@ -1553,8 +1553,7 @@ int ifile_open(const OptionsContext *o, const char *filename, Scheduler *sch)
const AVInputFormat *file_iformat = NULL;
int err, i, ret = 0;
int64_t timestamp;
AVDictionary *unused_opts = NULL;
const AVDictionaryEntry *e = NULL;
AVDictionary *opts_used = NULL;
const char* video_codec_name = NULL;
const char* audio_codec_name = NULL;
const char* subtitle_codec_name = NULL;
@ -1826,48 +1825,21 @@ int ifile_open(const OptionsContext *o, const char *filename, Scheduler *sch)
/* Add all the streams from the given input file to the demuxer */
for (int i = 0; i < ic->nb_streams; i++) {
ret = ist_add(o, d, ic->streams[i]);
if (ret < 0)
ret = ist_add(o, d, ic->streams[i], &opts_used);
if (ret < 0) {
av_dict_free(&opts_used);
return ret;
}
}
/* dump the file content */
av_dump_format(ic, f->index, filename, 0);
/* check if all codec options have been used */
unused_opts = strip_specifiers(o->g->codec_opts);
for (i = 0; i < f->nb_streams; i++) {
DemuxStream *ds = ds_from_ist(f->streams[i]);
e = NULL;
while ((e = av_dict_iterate(ds->decoder_opts, e)))
av_dict_set(&unused_opts, e->key, NULL, 0);
}
e = NULL;
while ((e = av_dict_iterate(unused_opts, e))) {
const AVClass *class = avcodec_get_class();
const AVOption *option = av_opt_find(&class, e->key, NULL, 0,
AV_OPT_SEARCH_CHILDREN | AV_OPT_SEARCH_FAKE_OBJ);
const AVClass *fclass = avformat_get_class();
const AVOption *foption = av_opt_find(&fclass, e->key, NULL, 0,
AV_OPT_SEARCH_CHILDREN | AV_OPT_SEARCH_FAKE_OBJ);
if (!option || foption)
continue;
if (!(option->flags & AV_OPT_FLAG_DECODING_PARAM)) {
av_log(d, AV_LOG_ERROR, "Codec AVOption %s (%s) is not a decoding "
"option.\n", e->key, option->help ? option->help : "");
return AVERROR(EINVAL);
}
av_log(d, AV_LOG_WARNING, "Codec AVOption %s (%s) has not been used "
"for any stream. The most likely reason is either wrong type "
"(e.g. a video option with no video streams) or that it is a "
"private option of some decoder which was not actually used "
"for any stream.\n", e->key, option->help ? option->help : "");
}
av_dict_free(&unused_opts);
ret = check_avoptions_used(o->g->codec_opts, opts_used, d, 1);
av_dict_free(&opts_used);
if (ret < 0)
return ret;
for (i = 0; i < o->dump_attachment.nb_opt; i++) {
int j;

1
fftools/ffmpeg_mux.c
View File

@ -864,6 +864,7 @@ void of_free(OutputFile **pof)
av_freep(&mux->sch_stream_idx);
av_dict_free(&mux->opts);
av_dict_free(&mux->enc_opts_used);
av_packet_free(&mux->sq_pkt);

3
fftools/ffmpeg_mux.h
View File

@ -99,6 +99,9 @@ typedef struct Muxer {
AVDictionary *opts;
// used to validate that all encoder avoptions have been actually used
AVDictionary *enc_opts_used;
/* filesize limit expressed in bytes */
int64_t limit_filesize;
atomic_int_least64_t last_filesize;

56
fftools/ffmpeg_mux_init.c
View File

@ -1160,7 +1160,8 @@ static int ost_add(Muxer *mux, const OptionsContext *o, enum AVMediaType type,
const char *enc_time_base = NULL;
ret = filter_codec_opts(o->g->codec_opts, enc->codec_id,
oc, st, enc->codec, &ost->encoder_opts);
oc, st, enc->codec, &ost->encoder_opts,
&mux->enc_opts_used);
if (ret < 0)
return ret;
@ -1265,7 +1266,8 @@ static int ost_add(Muxer *mux, const OptionsContext *o, enum AVMediaType type,
}
} else {
ret = filter_codec_opts(o->g->codec_opts, AV_CODEC_ID_NONE, oc, st,
NULL, &ost->encoder_opts);
NULL, &ost->encoder_opts,
&mux->enc_opts_used);
if (ret < 0)
return ret;
}
@ -3118,53 +3120,6 @@ static int process_forced_keyframes(Muxer *mux, const OptionsContext *o)
return 0;
}
static int validate_enc_avopt(Muxer *mux, const AVDictionary *codec_avopt)
{
const AVClass *class = avcodec_get_class();
const AVClass *fclass = avformat_get_class();
const OutputFile *of = &mux->of;
AVDictionary *unused_opts;
const AVDictionaryEntry *e;
unused_opts = strip_specifiers(codec_avopt);
for (int i = 0; i < of->nb_streams; i++) {
e = NULL;
while ((e = av_dict_iterate(of->streams[i]->encoder_opts, e)))
av_dict_set(&unused_opts, e->key, NULL, 0);
}
e = NULL;
while ((e = av_dict_iterate(unused_opts, e))) {
const AVOption *option = av_opt_find(&class, e->key, NULL, 0,
AV_OPT_SEARCH_CHILDREN | AV_OPT_SEARCH_FAKE_OBJ);
const AVOption *foption = av_opt_find(&fclass, e->key, NULL, 0,
AV_OPT_SEARCH_CHILDREN | AV_OPT_SEARCH_FAKE_OBJ);
if (!option || foption)
continue;
if (!(option->flags & AV_OPT_FLAG_ENCODING_PARAM)) {
av_log(mux, AV_LOG_ERROR, "Codec AVOption %s (%s) is not an "
"encoding option.\n", e->key, option->help ? option->help : "");
av_dict_free(&unused_opts);
return AVERROR(EINVAL);
}
// gop_timecode is injected by generic code but not always used
if (!strcmp(e->key, "gop_timecode"))
continue;
av_log(mux, AV_LOG_WARNING, "Codec AVOption %s (%s) has not been used "
"for any stream. The most likely reason is either wrong type "
"(e.g. a video option with no video streams) or that it is a "
"private option of some encoder which was not actually used for "
"any stream.\n", e->key, option->help ? option->help : "");
}
av_dict_free(&unused_opts);
return 0;
}
static const char *output_file_item_name(void *obj)
{
const Muxer *mux = obj;
@ -3272,7 +3227,8 @@ int of_open(const OptionsContext *o, const char *filename, Scheduler *sch)
return err;
/* check if all codec options have been used */
err = validate_enc_avopt(mux, o->g->codec_opts);
err = check_avoptions_used(o->g->codec_opts, mux->enc_opts_used, mux, 0);
av_dict_free(&mux->enc_opts_used);
if (err < 0)
return err;

18
fftools/ffmpeg_opt.c
View File

@ -151,24 +151,6 @@ static int show_hwaccels(void *optctx, const char *opt, const char *arg)
return 0;
}
/* return a copy of the input with the stream specifiers removed from the keys */
AVDictionary *strip_specifiers(const AVDictionary *dict)
{
const AVDictionaryEntry *e = NULL;
AVDictionary *ret = NULL;
while ((e = av_dict_iterate(dict, e))) {
char *p = strchr(e->key, ':');
if (p)
*p = 0;
av_dict_set(&ret, e->key, e->value, 0);
if (p)
*p = ':';
}
return ret;
}
const char *opt_match_per_type_str(const SpecifierOptList *sol,
char mediatype)
{

2
fftools/ffplay.c
View File

@ -2673,7 +2673,7 @@ static int stream_component_open(VideoState *is, int stream_index)
avctx->flags2 |= AV_CODEC_FLAG2_FAST;
ret = filter_codec_opts(codec_opts, avctx->codec_id, ic,
ic->streams[stream_index], codec, &opts);
ic->streams[stream_index], codec, &opts, NULL);
if (ret < 0)
goto fail;

2
fftools/ffprobe.c
View File

@ -3927,7 +3927,7 @@ static int open_input_file(InputFile *ifile, const char *filename,
AVDictionary *opts;
err = filter_codec_opts(codec_opts, stream->codecpar->codec_id,
fmt_ctx, stream, codec, &opts);
fmt_ctx, stream, codec, &opts, NULL);
if (err < 0)
exit(1);