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celtenc: Add complexity, cbr, and max-bitrate properties

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This commit is contained in:
David Schleef 2009-09-19 14:10:28 -07:00
parent e4a2eb1d6f
commit de0ceb1178
2 changed files with 60 additions and 8 deletions
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65
ext/celt/gstceltenc.c
View file

@ -79,12 +79,18 @@ GST_ELEMENT_DETAILS ("Celt audio encoder",
#define DEFAULT_BITRATE 64
#define DEFAULT_FRAMESIZE 256
#define DEFAULT_CBR TRUE
#define DEFAULT_COMPLEXITY 9
#define DEFAULT_MAX_BITRATE 64
enum
{
PROP_0,
PROP_BITRATE,
PROP_FRAMESIZE
PROP_FRAMESIZE,
PROP_CBR,
PROP_COMPLEXITY,
PROP_MAX_BITRATE
};
static void gst_celt_enc_finalize (GObject * object);
@ -152,13 +158,26 @@ gst_celt_enc_class_init (GstCeltEncClass * klass)
g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_BITRATE,
g_param_spec_int ("bitrate", "Encoding Bit-rate",
"Specify an encoding bit-rate (in Kbps). (0 = automatic)",
"Specify an encoding bit-rate (in Kbps).",
10, 320, DEFAULT_BITRATE,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_FRAMESIZE,
g_param_spec_int ("framesize", "Frame Size",
"The number of samples per frame", 64, 512, DEFAULT_FRAMESIZE,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_CBR,
g_param_spec_boolean ("cbr", "Constant bit rate",
"Constant bit rate", DEFAULT_CBR,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_COMPLEXITY,
g_param_spec_int ("complexity", "Complexity",
"Complexity", 0, 10, DEFAULT_COMPLEXITY,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_MAX_BITRATE,
g_param_spec_int ("max-bitrate", "Maximum Encoding Bit-rate",
"Specify a maximum encoding bit rate (in Kbps) for variable bit rate encoding.",
10, 320, DEFAULT_MAX_BITRATE,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
gobject_class->finalize = GST_DEBUG_FUNCPTR (gst_celt_enc_finalize);
@ -511,6 +530,9 @@ gst_celt_enc_init (GstCeltEnc * enc, GstCeltEncClass * klass)
enc->bitrate = DEFAULT_BITRATE;
enc->frame_size = DEFAULT_FRAMESIZE;
enc->cbr = DEFAULT_CBR;
enc->complexity = DEFAULT_COMPLEXITY;
enc->max_bitrate = DEFAULT_MAX_BITRATE;
enc->setup = FALSE;
enc->header_sent = FALSE;
@ -551,7 +573,6 @@ static gboolean
gst_celt_enc_setup (GstCeltEnc * enc)
{
gint error = CELT_OK;
gint bytes_per_packet;
enc->setup = FALSE;
@ -562,9 +583,6 @@ gst_celt_enc_setup (GstCeltEnc * enc)
celt_mode_info (enc->mode, CELT_GET_FRAME_SIZE, &enc->frame_size);
bytes_per_packet =
(enc->bitrate * 1000 * enc->frame_size / enc->rate + 4) / 8;
celt_header_init (&enc->header, enc->mode);
enc->header.nb_channels = enc->channels;
@ -572,6 +590,12 @@ gst_celt_enc_setup (GstCeltEnc * enc)
if (!enc->state)
goto encoder_creation_failed;
if (!enc->cbr) {
GST_ERROR ("setting vbr");
celt_encoder_ctl (enc->state, CELT_SET_VBR_RATE (enc->bitrate), 0);
}
celt_encoder_ctl (enc->state, CELT_SET_COMPLEXITY (enc->complexity), 0);
GST_LOG_OBJECT (enc, "we have frame size %d", enc->frame_size);
enc->setup = TRUE;
@ -700,8 +724,15 @@ gst_celt_enc_encode (GstCeltEnc * enc, gboolean flush)
GstFlowReturn ret = GST_FLOW_OK;
gint frame_size = enc->frame_size;
gint bytes = frame_size * 2 * enc->channels;
gint bytes_per_packet =
(enc->bitrate * 1000 * enc->frame_size / enc->rate + 4) / 8;
gint bytes_per_packet;
if (enc->cbr) {
bytes_per_packet =
(enc->bitrate * 1000 * enc->frame_size / enc->rate + 4) / 8;
} else {
bytes_per_packet =
(enc->max_bitrate * 1000 * enc->frame_size / enc->rate + 4) / 8;
}
if (flush && gst_adapter_available (enc->adapter) % bytes != 0) {
guint diff = gst_adapter_available (enc->adapter) % bytes;
@ -943,6 +974,15 @@ gst_celt_enc_get_property (GObject * object, guint prop_id, GValue * value,
case PROP_FRAMESIZE:
g_value_set_int (value, enc->frame_size);
break;
case PROP_CBR:
g_value_set_boolean (value, enc->cbr);
break;
case PROP_COMPLEXITY:
g_value_set_int (value, enc->complexity);
break;
case PROP_MAX_BITRATE:
g_value_set_int (value, enc->max_bitrate);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
@ -964,6 +1004,15 @@ gst_celt_enc_set_property (GObject * object, guint prop_id,
case PROP_FRAMESIZE:
enc->frame_size = g_value_get_int (value);
break;
case PROP_CBR:
enc->cbr = g_value_get_boolean (value);
break;
case PROP_COMPLEXITY:
enc->complexity = g_value_get_int (value);
break;
case PROP_MAX_BITRATE:
enc->max_bitrate = g_value_get_int (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;

3
ext/celt/gstceltenc.h
View file

@ -62,6 +62,9 @@ struct _GstCeltEnc {
gint bitrate;
gint frame_size;
gboolean cbr;
gint complexity;
gint max_bitrate;
gint channels;
gint rate;