diff --git a/ChangeLog b/ChangeLog index b6d5397d6c..7e476bf720 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1,3 +1,13 @@ +2007-09-09 Sebastian Dröge + + * gst/volume/gstvolume.c: (volume_choose_func): + * tests/check/elements/volume.c: (GST_START_TEST): + Revert the latest change: floating point samples are allowed to + have any value, not only values in the range [-1,1]. Thanks to Andy + Wingo for noticing. + Also fix processing of int32 samples with volumes > 4 by making the + unity value smaller which prevents overflows. + 2007-09-07 Tim-Philipp Müller * gst-libs/gst/rtp/gstrtpbuffer.c: diff --git a/gst/volume/gstvolume.c b/gst/volume/gstvolume.c index 4747581fa4..942cda9537 100644 --- a/gst/volume/gstvolume.c +++ b/gst/volume/gstvolume.c @@ -64,8 +64,8 @@ #define VOLUME_UNITY_INT16_BIT_SHIFT 13 /* number of bits to shift for unity */ #define VOLUME_UNITY_INT24 2097152 /* internal int for unity 2^(24-3) */ #define VOLUME_UNITY_INT24_BIT_SHIFT 21 /* number of bits to shift for unity */ -#define VOLUME_UNITY_INT32 536870912 /* internal int for unity 2^(32-3) */ -#define VOLUME_UNITY_INT32_BIT_SHIFT 29 +#define VOLUME_UNITY_INT32 134217728 /* internal int for unity 2^(32-5) */ +#define VOLUME_UNITY_INT32_BIT_SHIFT 27 #define VOLUME_MAX_DOUBLE 10.0 #define VOLUME_MAX_INT8 G_MAXINT8 #define VOLUME_MIN_INT8 G_MININT8 @@ -214,12 +214,8 @@ static gboolean volume_set_caps (GstBaseTransform * base, GstCaps * incaps, static void volume_process_double (GstVolume * this, gpointer bytes, guint n_bytes); -static void volume_process_double_clamp (GstVolume * this, gpointer bytes, - guint n_bytes); static void volume_process_float (GstVolume * this, gpointer bytes, guint n_bytes); -static void volume_process_float_clamp (GstVolume * this, gpointer bytes, - guint n_bytes); static void volume_process_int32 (GstVolume * this, gpointer bytes, guint n_bytes); static void volume_process_int32_clamp (GstVolume * this, gpointer bytes, @@ -288,22 +284,10 @@ volume_choose_func (GstVolume * this) case GST_VOLUME_FORMAT_FLOAT: switch (this->width) { case 32: - /* only clamp if the gain is greater than 1.0 - * FIXME: real_vol_f can change while processing the buffer! - */ - if (this->real_vol_f > 1.0) - this->process = volume_process_float_clamp; - else - this->process = volume_process_float; + this->process = volume_process_float; break; case 64: - /* only clamp if the gain is greater than 1.0 - * FIXME: real_vol_f can change while processing the buffer! - */ - if (this->real_vol_f > 1.0) - this->process = volume_process_double_clamp; - else - this->process = volume_process_double; + this->process = volume_process_double; break; } break; @@ -511,20 +495,6 @@ volume_process_double (GstVolume * this, gpointer bytes, guint n_bytes) } } -static void -volume_process_double_clamp (GstVolume * this, gpointer bytes, guint n_bytes) -{ - gdouble *data = (gdouble *) bytes; - guint i, num_samples = n_bytes / sizeof (gdouble); - gdouble tmp; - - for (i = 0; i < num_samples; i++) { - tmp = *data * this->real_vol_f; - *data++ = CLAMP (tmp, -1.0, 1.0); - } - -} - static void volume_process_float (GstVolume * this, gpointer bytes, guint n_bytes) { @@ -543,19 +513,6 @@ volume_process_float (GstVolume * this, gpointer bytes, guint n_bytes) oil_scalarmultiply_f32_ns (data, data, &this->real_vol_f, num_samples); } -static void -volume_process_float_clamp (GstVolume * this, gpointer bytes, guint n_bytes) -{ - gfloat *data = (gfloat *) bytes; - guint i, num_samples = n_bytes / sizeof (gfloat); - gfloat tmp; - - for (i = 0; i < num_samples; i++) { - tmp = *data * this->real_vol_f; - *data++ = CLAMP (tmp, -1.0, 1.0); - } -} - static void volume_process_int32 (GstVolume * this, gpointer bytes, guint n_bytes) { diff --git a/tests/check/elements/volume.c b/tests/check/elements/volume.c index c0ca64cb6a..0bb12f49ed 100644 --- a/tests/check/elements/volume.c +++ b/tests/check/elements/volume.c @@ -1006,7 +1006,7 @@ GST_START_TEST (test_double_f32) GstBuffer *outbuffer; GstCaps *caps; gfloat in[2] = { 0.75, -0.25 }; - gfloat out[2] = { 1.0, -0.5 }; /* notice the clamped sample */ + gfloat out[2] = { 1.5, -0.5 }; /* nothing is clamped */ gfloat *res; volume = setup_volume (); @@ -1190,7 +1190,7 @@ GST_START_TEST (test_double_f64) GstBuffer *outbuffer; GstCaps *caps; gdouble in[2] = { 0.75, -0.25 }; - gdouble out[2] = { 1.0, -0.5 }; /* notice the clamped sample */ + gdouble out[2] = { 1.5, -0.5 }; /* nothing is clamped */ gdouble *res; volume = setup_volume ();