int av_bsf_list_append2(AVBSFList *lst, const char *bsf_name, AVDictionary ** options)
{
int ret;
const AVBitStreamFilter *filter;
AVBSFContext *bsf;
filter = av_bsf_get_by_name(bsf_name);
if (!filter)
return AVERROR_BSF_NOT_FOUND;
ret = av_bsf_alloc(filter, &bsf);
if (ret < 0)
return ret;
if (options) {
ret = av_opt_set_dict2(bsf, options, AV_OPT_SEARCH_CHILDREN);
if (ret < 0)
goto end;
}
ret = av_bsf_list_append(lst, bsf);
end:
if (ret < 0)
av_bsf_free(&bsf);
return ret;
}
static int list_devices_for_context(AVFormatContext *s, AVDictionary *options,
AVDeviceInfoList **device_list)
{
AVDictionary *tmp = NULL;
int ret;
av_dict_copy(&tmp, options, 0);
if ((ret = av_opt_set_dict2(s, &tmp, AV_OPT_SEARCH_CHILDREN)) < 0)
goto fail;
ret = avdevice_list_devices(s, device_list);
fail:
av_dict_free(&tmp);
avformat_free_context(s);
return ret;
}
QVector<QPair<QString, QString>> CameraDevice::getRawDeviceListGeneric()
{
QVector<QPair<QString, QString>> devices;
if (!getDefaultInputFormat())
return devices;
// Alloc an input device context
AVFormatContext *s;
if (!(s = avformat_alloc_context()))
return devices;
if (!iformat->priv_class || !AV_IS_INPUT_DEVICE(iformat->priv_class->category))
{
avformat_free_context(s);
return devices;
}
s->iformat = iformat;
if (s->iformat->priv_data_size > 0)
{
s->priv_data = av_mallocz(s->iformat->priv_data_size);
if (!s->priv_data)
{
avformat_free_context(s);
return devices;
}
if (s->iformat->priv_class)
{
*(const AVClass**)s->priv_data= s->iformat->priv_class;
av_opt_set_defaults(s->priv_data);
}
}
else
{
s->priv_data = NULL;
}
// List the devices for this context
AVDeviceInfoList* devlist = nullptr;
AVDictionary *tmp = nullptr;
av_dict_copy(&tmp, nullptr, 0);
if (av_opt_set_dict2(s, &tmp, AV_OPT_SEARCH_CHILDREN) < 0)
{
av_dict_free(&tmp);
avformat_free_context(s);
}
avdevice_list_devices(s, &devlist);
if (!devlist)
{
qWarning() << "avdevice_list_devices failed";
return devices;
}
// Convert the list to a QVector
devices.resize(devlist->nb_devices);
for (int i=0; i<devlist->nb_devices; i++)
{
AVDeviceInfo* dev = devlist->devices[i];
devices[i].first = dev->device_name;
devices[i].second = dev->device_description;
}
avdevice_free_list_devices(&devlist);
return devices;
}
/* add a codec and set the default parameters */
static void add_codec(FFServerStream *stream, AVCodecContext *av,
FFServerConfig *config)
{
AVStream *st;
AVDictionary **opts, *recommended = NULL;
char *enc_config;
if(stream->nb_streams >= FF_ARRAY_ELEMS(stream->streams))
return;
opts = av->codec_type == AVMEDIA_TYPE_AUDIO ?
&config->audio_opts : &config->video_opts;
av_dict_copy(&recommended, *opts, 0);
av_opt_set_dict2(av->priv_data, opts, AV_OPT_SEARCH_CHILDREN);
av_opt_set_dict2(av, opts, AV_OPT_SEARCH_CHILDREN);
if (av_dict_count(*opts))
av_log(NULL, AV_LOG_WARNING,
"Something is wrong, %d options are not set!\n",
av_dict_count(*opts));
if (!config->stream_use_defaults) {
switch(av->codec_type) {
case AVMEDIA_TYPE_AUDIO:
if (av->bit_rate == 0)
report_config_error(config->filename, config->line_num,
AV_LOG_ERROR, &config->errors,
"audio bit rate is not set\n");
if (av->sample_rate == 0)
report_config_error(config->filename, config->line_num,
AV_LOG_ERROR, &config->errors,
"audio sample rate is not set\n");
break;
case AVMEDIA_TYPE_VIDEO:
if (av->width == 0 || av->height == 0)
report_config_error(config->filename, config->line_num,
AV_LOG_ERROR, &config->errors,
"video size is not set\n");
break;
default:
av_assert0(0);
}
goto done;
}
/* stream_use_defaults = true */
/* compute default parameters */
switch(av->codec_type) {
case AVMEDIA_TYPE_AUDIO:
if (!av_dict_get(recommended, "b", NULL, 0)) {
av->bit_rate = 64000;
av_dict_set_int(&recommended, "b", av->bit_rate, 0);
WARNING("Setting default value for audio bit rate = %d. "
"Use NoDefaults to disable it.\n",
av->bit_rate);
}
if (!av_dict_get(recommended, "ar", NULL, 0)) {
av->sample_rate = 22050;
av_dict_set_int(&recommended, "ar", av->sample_rate, 0);
WARNING("Setting default value for audio sample rate = %d. "
"Use NoDefaults to disable it.\n",
av->sample_rate);
}
if (!av_dict_get(recommended, "ac", NULL, 0)) {
av->channels = 1;
av_dict_set_int(&recommended, "ac", av->channels, 0);
WARNING("Setting default value for audio channel count = %d. "
"Use NoDefaults to disable it.\n",
av->channels);
}
break;
case AVMEDIA_TYPE_VIDEO:
if (!av_dict_get(recommended, "b", NULL, 0)) {
av->bit_rate = 64000;
av_dict_set_int(&recommended, "b", av->bit_rate, 0);
WARNING("Setting default value for video bit rate = %d. "
"Use NoDefaults to disable it.\n",
av->bit_rate);
}
if (!av_dict_get(recommended, "time_base", NULL, 0)) {
av->time_base.den = 5;
av->time_base.num = 1;
av_dict_set(&recommended, "time_base", "1/5", 0);
WARNING("Setting default value for video frame rate = %d. "
"Use NoDefaults to disable it.\n",
av->time_base.den);
}
if (!av_dict_get(recommended, "video_size", NULL, 0)) {
av->width = 160;
av->height = 128;
av_dict_set(&recommended, "video_size", "160x128", 0);
WARNING("Setting default value for video size = %dx%d. "
"Use NoDefaults to disable it.\n",
av->width, av->height);
}
/* Bitrate tolerance is less for streaming */
if (!av_dict_get(recommended, "bt", NULL, 0)) {
av->bit_rate_tolerance = FFMAX(av->bit_rate / 4,
(int64_t)av->bit_rate*av->time_base.num/av->time_base.den);
av_dict_set_int(&recommended, "bt", av->bit_rate_tolerance, 0);
WARNING("Setting default value for video bit rate tolerance = %d. "
"Use NoDefaults to disable it.\n",
av->bit_rate_tolerance);
}
if (!av_dict_get(recommended, "rc_eq", NULL, 0)) {
av->rc_eq = av_strdup("tex^qComp");
av_dict_set(&recommended, "rc_eq", "tex^qComp", 0);
WARNING("Setting default value for video rate control equation = "
"%s. Use NoDefaults to disable it.\n",
av->rc_eq);
}
if (!av_dict_get(recommended, "maxrate", NULL, 0)) {
av->rc_max_rate = av->bit_rate * 2;
av_dict_set_int(&recommended, "maxrate", av->rc_max_rate, 0);
WARNING("Setting default value for video max rate = %d. "
"Use NoDefaults to disable it.\n",
av->rc_max_rate);
}
if (av->rc_max_rate && !av_dict_get(recommended, "bufsize", NULL, 0)) {
av->rc_buffer_size = av->rc_max_rate;
av_dict_set_int(&recommended, "bufsize", av->rc_buffer_size, 0);
WARNING("Setting default value for video buffer size = %d. "
"Use NoDefaults to disable it.\n",
av->rc_buffer_size);
}
break;
default:
abort();
}
done:
st = av_mallocz(sizeof(AVStream));
if (!st)
return;
av_dict_get_string(recommended, &enc_config, '=', ',');
av_dict_free(&recommended);
av_stream_set_recommended_encoder_configuration(st, enc_config);
st->codec = av;
stream->streams[stream->nb_streams++] = st;
}
static void ffserver_apply_stream_config(AVCodecContext *enc, const AVDictionary *conf, AVDictionary **opts)
{
AVDictionaryEntry *e;
/* Return values from ffserver_set_*_param are ignored.
Values are initially parsed and checked before inserting to
AVDictionary. */
//video params
if ((e = av_dict_get(conf, "VideoBitRateRangeMin", NULL, 0)))
ffserver_set_int_param(&enc->rc_min_rate, e->value, 1000, INT_MIN,
INT_MAX, NULL, 0, NULL);
if ((e = av_dict_get(conf, "VideoBitRateRangeMax", NULL, 0)))
ffserver_set_int_param(&enc->rc_max_rate, e->value, 1000, INT_MIN,
INT_MAX, NULL, 0, NULL);
if ((e = av_dict_get(conf, "Debug", NULL, 0)))
ffserver_set_int_param(&enc->debug, e->value, 0, INT_MIN, INT_MAX,
NULL, 0, NULL);
if ((e = av_dict_get(conf, "Strict", NULL, 0)))
ffserver_set_int_param(&enc->strict_std_compliance, e->value, 0,
INT_MIN, INT_MAX, NULL, 0, NULL);
if ((e = av_dict_get(conf, "VideoBufferSize", NULL, 0)))
ffserver_set_int_param(&enc->rc_buffer_size, e->value, 8*1024,
INT_MIN, INT_MAX, NULL, 0, NULL);
if ((e = av_dict_get(conf, "VideoBitRateTolerance", NULL, 0)))
ffserver_set_int_param(&enc->bit_rate_tolerance, e->value, 1000,
INT_MIN, INT_MAX, NULL, 0, NULL);
if ((e = av_dict_get(conf, "VideoBitRate", NULL, 0)))
ffserver_set_int_param(&enc->bit_rate, e->value, 1000, INT_MIN,
INT_MAX, NULL, 0, NULL);
if ((e = av_dict_get(conf, "VideoSizeWidth", NULL, 0)))
ffserver_set_int_param(&enc->width, e->value, 0, INT_MIN, INT_MAX,
NULL, 0, NULL);
if ((e = av_dict_get(conf, "VideoSizeHeight", NULL, 0)))
ffserver_set_int_param(&enc->height, e->value, 0, INT_MIN, INT_MAX,
NULL, 0, NULL);
if ((e = av_dict_get(conf, "PixelFormat", NULL, 0))) {
int val;
ffserver_set_int_param(&val, e->value, 0, INT_MIN, INT_MAX, NULL, 0,
NULL);
enc->pix_fmt = val;
}
if ((e = av_dict_get(conf, "VideoGopSize", NULL, 0)))
ffserver_set_int_param(&enc->gop_size, e->value, 0, INT_MIN, INT_MAX,
NULL, 0, NULL);
if ((e = av_dict_get(conf, "VideoFrameRateNum", NULL, 0)))
ffserver_set_int_param(&enc->time_base.num, e->value, 0, INT_MIN,
INT_MAX, NULL, 0, NULL);
if ((e = av_dict_get(conf, "VideoFrameRateDen", NULL, 0)))
ffserver_set_int_param(&enc->time_base.den, e->value, 0, INT_MIN,
INT_MAX, NULL, 0, NULL);
if ((e = av_dict_get(conf, "VideoQDiff", NULL, 0)))
ffserver_set_int_param(&enc->max_qdiff, e->value, 0, INT_MIN, INT_MAX,
NULL, 0, NULL);
if ((e = av_dict_get(conf, "VideoQMax", NULL, 0)))
ffserver_set_int_param(&enc->qmax, e->value, 0, INT_MIN, INT_MAX, NULL,
0, NULL);
if ((e = av_dict_get(conf, "VideoQMin", NULL, 0)))
ffserver_set_int_param(&enc->qmin, e->value, 0, INT_MIN, INT_MAX, NULL,
0, NULL);
if ((e = av_dict_get(conf, "LumiMask", NULL, 0)))
ffserver_set_float_param(&enc->lumi_masking, e->value, 0, -FLT_MAX,
FLT_MAX, NULL, 0, NULL);
if ((e = av_dict_get(conf, "DarkMask", NULL, 0)))
ffserver_set_float_param(&enc->dark_masking, e->value, 0, -FLT_MAX,
FLT_MAX, NULL, 0, NULL);
if (av_dict_get(conf, "BitExact", NULL, 0))
enc->flags |= CODEC_FLAG_BITEXACT;
if (av_dict_get(conf, "DctFastint", NULL, 0))
enc->dct_algo = FF_DCT_FASTINT;
if (av_dict_get(conf, "IdctSimple", NULL, 0))
enc->idct_algo = FF_IDCT_SIMPLE;
if (av_dict_get(conf, "VideoHighQuality", NULL, 0))
enc->mb_decision = FF_MB_DECISION_BITS;
if ((e = av_dict_get(conf, "VideoTag", NULL, 0)))
enc->codec_tag = MKTAG(e->value[0], e->value[1], e->value[2], e->value[3]);
if (av_dict_get(conf, "Qscale", NULL, 0)) {
enc->flags |= CODEC_FLAG_QSCALE;
ffserver_set_int_param(&enc->global_quality, e->value, FF_QP2LAMBDA,
INT_MIN, INT_MAX, NULL, 0, NULL);
}
if (av_dict_get(conf, "Video4MotionVector", NULL, 0)) {
enc->mb_decision = FF_MB_DECISION_BITS; //FIXME remove
enc->flags |= CODEC_FLAG_4MV;
}
//audio params
if ((e = av_dict_get(conf, "AudioChannels", NULL, 0)))
ffserver_set_int_param(&enc->channels, e->value, 0, INT_MIN, INT_MAX,
NULL, 0, NULL);
if ((e = av_dict_get(conf, "AudioSampleRate", NULL, 0)))
ffserver_set_int_param(&enc->sample_rate, e->value, 0, INT_MIN,
INT_MAX, NULL, 0, NULL);
if ((e = av_dict_get(conf, "AudioBitRate", NULL, 0)))
ffserver_set_int_param(&enc->bit_rate, e->value, 0, INT_MIN, INT_MAX,
NULL, 0, NULL);
av_opt_set_dict2(enc, opts, AV_OPT_SEARCH_CHILDREN);
}
