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avcodec/libvpxenc: optimize parsing vpx_svc_ref_frame_config 

Getting rid of unnecessary use of AVDictionary object in parsing
vpx_svc_ref_frame_config.

Reviewed-by: Nicolas George <george@nsup.org>
Signed-off-by: James Zern <jzern@google.com>
This commit is contained in:
Wonkap Jang 2021-02-18 11:01:31 -08:00 committed by James Zern
parent 9edec9206a
commit 029e3c1c70
1 changed files with 53 additions and 18 deletions
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71
libavcodec/libvpxenc.c
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@ -127,7 +127,6 @@ typedef struct VPxEncoderContext {
int roi_warned;
#if CONFIG_LIBVPX_VP9_ENCODER && defined(VPX_CTRL_VP9E_SET_MAX_INTER_BITRATE_PCT)
vpx_svc_ref_frame_config_t ref_frame_config;
AVDictionary *vpx_ref_frame_config;
#endif
} VPxContext;
@ -561,18 +560,13 @@ static int vpx_ts_param_parse(VPxContext *ctx, struct vpx_codec_enc_cfg *enccfg,
}
#if CONFIG_LIBVPX_VP9_ENCODER && defined(VPX_CTRL_VP9E_SET_MAX_INTER_BITRATE_PCT)
static int vpx_ref_frame_config_parse(VPxContext *ctx, const struct vpx_codec_enc_cfg *enccfg,
char *key, char *value, enum AVCodecID codec_id)
static int vpx_ref_frame_config_set_value(vpx_svc_ref_frame_config_t *ref_frame_config,
int ss_number_layers, char *key, char *value)
{
size_t value_len = strlen(value);
int ss_number_layers = enccfg->ss_number_layers;
vpx_svc_ref_frame_config_t *ref_frame_config = &ctx->ref_frame_config;
if (!value_len)
return -1;
if (codec_id != AV_CODEC_ID_VP9)
return -1;
return AVERROR(EINVAL);
if (!strcmp(key, "rfc_update_buffer_slot")) {
vp8_ts_parse_int_array(ref_frame_config->update_buffer_slot, value, value_len, ss_number_layers);
@ -600,6 +594,49 @@ static int vpx_ref_frame_config_parse(VPxContext *ctx, const struct vpx_codec_en
return 0;
}
static int vpx_parse_ref_frame_config_element(vpx_svc_ref_frame_config_t *ref_frame_config,
int ss_number_layers, const char **buf)
{
const char key_val_sep[] = "=";
const char pairs_sep[] = ":";
char *key = av_get_token(buf, key_val_sep);
char *val = NULL;
int ret;
if (key && *key && strspn(*buf, key_val_sep)) {
(*buf)++;
val = av_get_token(buf, pairs_sep);
}
if (key && *key && val && *val)
ret = vpx_ref_frame_config_set_value(ref_frame_config, ss_number_layers, key, val);
else
ret = AVERROR(EINVAL);
av_freep(&key);
av_freep(&val);
return ret;
}
static int vpx_parse_ref_frame_config(vpx_svc_ref_frame_config_t *ref_frame_config,
int ss_number_layers, const char *str)
{
int ret = 0;
while (*str) {
ret =
vpx_parse_ref_frame_config_element(ref_frame_config, ss_number_layers, &str);
if (ret < 0)
return ret;
if (*str)
str++;
}
return ret;
}
#endif
#if CONFIG_LIBVPX_VP9_ENCODER
@ -1594,20 +1631,18 @@ static int vpx_encode(AVCodecContext *avctx, AVPacket *pkt,
if (en) {
if (avctx->codec_id == AV_CODEC_ID_VP9) {
AVDictionaryEntry* en2 = NULL;
av_dict_parse_string(&ctx->vpx_ref_frame_config, en->value, "=", ":", 0);
while ((en2 = av_dict_get(ctx->vpx_ref_frame_config, "", en2, AV_DICT_IGNORE_SUFFIX))) {
if (vpx_ref_frame_config_parse(ctx, enccfg, en2->key, en2->value, avctx->codec_id) < 0)
av_log(avctx, AV_LOG_WARNING,
"Error parsing option '%s = %s'.\n",
en2->key, en2->value);
int ret = vpx_parse_ref_frame_config(&ctx->ref_frame_config,
enccfg->ss_number_layers, en->value);
if (ret < 0) {
av_log(avctx, AV_LOG_WARNING,
"Error parsing ref_frame_config option %s.\n", en->value);
return ret;
}
codecctl_intp(avctx, VP9E_SET_SVC_REF_FRAME_CONFIG, (int *)&ctx->ref_frame_config);
} else {
av_log(avctx, AV_LOG_WARNING,
"Error using option ref-frame-config for a non-VP9 codec\n");
"Ignoring ref-frame-config for a non-VP9 codec\n");
}
}
#endif