Skip to content

V
vlc-2-2
Commit 6ea8c376 authored by Rafaël Carré's avatar Rafaël Carré
Browse files
Options

fdkaac: simplify bitrate calculation

parent 4d705160
Hide whitespace changes
Inline Side-by-side
Showing with 11 additions and 27 deletions
modules/codec/fdkaac.c
View file @ 6ea8c376
......@@ -190,22 +190,14 @@ static int OpenEncoder(vlc_object_t *p_this)
uint16_t channel_config;
CHANNEL_MODE mode;
int sce, cpe;
switch (p_enc->fmt_in.audio.i_channels) {
case 1: mode = MODE_1; sce = 1; cpe = 0;
channel_config = AOUT_CHAN_CENTER; break;
case 2: mode = MODE_2; sce = 0; cpe = 1;
channel_config = AOUT_CHANS_STEREO; break;
case 3: mode = MODE_1_2; sce = 1; cpe = 1;
channel_config = AOUT_CHANS_3_0; break;
case 4: mode = MODE_1_2_1; sce = 2; cpe = 1;
channel_config = AOUT_CHANS_4_CENTER_REAR; break;
case 5: mode = MODE_1_2_2; sce = 1; cpe = 2;
channel_config = AOUT_CHANS_5_0; break;
case 6: mode = MODE_1_2_2_1; sce = 2; cpe = 2;
channel_config = AOUT_CHANS_5_1; break;
case 8: mode = MODE_1_2_2_2_1; sce = 2; cpe = 3;
channel_config = AOUT_CHANS_7_1; break;
case 1: mode = MODE_1; channel_config = AOUT_CHAN_CENTER; break;
case 2: mode = MODE_2; channel_config = AOUT_CHANS_STEREO; break;
case 3: mode = MODE_1_2; channel_config = AOUT_CHANS_3_0; break;
case 4: mode = MODE_1_2_1; channel_config = AOUT_CHANS_4_CENTER_REAR; break;
case 5: mode = MODE_1_2_2; channel_config = AOUT_CHANS_5_0; break;
case 6: mode = MODE_1_2_2_1; channel_config = AOUT_CHANS_5_1; break;
case 8: mode = MODE_1_2_2_2_1; channel_config = AOUT_CHANS_7_1; break;
default:
msg_Err(p_enc, "we do not support > 8 input channels, this input has %i",
p_enc->fmt_in.audio.i_channels);
......@@ -290,21 +282,13 @@ static int OpenEncoder(vlc_object_t *p_this)
goto error;
}
} else {
int i_bitrate;
if (p_enc->fmt_out.i_bitrate == 0) {
if (i_aot == PROFILE_AAC_HE_v2) {
sce = 1;
cpe = 0;
}
i_bitrate = (96*sce + 128*cpe) * p_enc->fmt_out.audio.i_rate / 44;
if (i_aot == PROFILE_AAC_HE ||
i_aot == PROFILE_AAC_HE_v2 ||
b_eld_sbr)
int i_bitrate = p_enc->fmt_out.i_bitrate;
if (i_bitrate == 0) {
i_bitrate = 96 * p_enc->fmt_in.audio.i_channels * p_enc->fmt_out.audio.i_rate / 44;
if (i_aot == PROFILE_AAC_HE || i_aot == PROFILE_AAC_HE_v2 || b_eld_sbr)
i_bitrate /= 2;
p_enc->fmt_out.i_bitrate = i_bitrate;
msg_Info(p_enc, "Setting optimal bitrate of %i", i_bitrate);
} else {
i_bitrate = p_enc->fmt_out.i_bitrate;
}
if ((erraac = aacEncoder_SetParam(p_sys->handle, AACENC_BITRATE,
i_bitrate)) != AACENC_OK) {
......
Markdown is supported
0% or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment