diff options
Diffstat (limited to 'gst-libs/gst/audio/audio.c')
| -rw-r--r-- | gst-libs/gst/audio/audio.c | 144 |
1 files changed, 70 insertions, 74 deletions
diff --git a/gst-libs/gst/audio/audio.c b/gst-libs/gst/audio/audio.c index d467af49..10a00142 100644 --- a/gst-libs/gst/audio/audio.c +++ b/gst-libs/gst/audio/audio.c @@ -26,7 +26,7 @@ #include <gst/gststructure.h> int -gst_audio_frame_byte_size (GstPad* pad) +gst_audio_frame_byte_size (GstPad * pad) { /* calculate byte size of an audio frame * this should be moved closer to the gstreamer core @@ -45,20 +45,20 @@ gst_audio_frame_byte_size (GstPad* pad) if (caps == NULL) { /* ERROR: could not get caps of pad */ - g_warning ("gstaudio: could not get caps of pad %s:%s\n", - GST_ELEMENT_NAME (gst_pad_get_parent (pad)), GST_PAD_NAME (pad)); + g_warning ("gstaudio: could not get caps of pad %s:%s\n", + GST_ELEMENT_NAME (gst_pad_get_parent (pad)), GST_PAD_NAME (pad)); return 0; } structure = gst_caps_get_structure (caps, 0); - gst_structure_get_int (structure, "width", &width); + gst_structure_get_int (structure, "width", &width); gst_structure_get_int (structure, "channels", &channels); - return (width / 8) * channels; + return (width / 8) * channels; } long -gst_audio_frame_length (GstPad* pad, GstBuffer* buf) +gst_audio_frame_length (GstPad * pad, GstBuffer * buf) /* calculate length of buffer in frames * this should be moved closer to the gstreamer core * and be implemented for every mime type IMO @@ -72,13 +72,13 @@ gst_audio_frame_length (GstPad* pad, GstBuffer* buf) /* error */ return 0; /* FIXME: this function assumes the buffer size to be a whole multiple - * of the frame byte size + * of the frame byte size */ return GST_BUFFER_SIZE (buf) / frame_byte_size; } long -gst_audio_frame_rate (GstPad *pad) +gst_audio_frame_rate (GstPad * pad) /* * calculate frame rate (based on caps of pad) * returns 0 if failed, rate if success @@ -93,19 +93,18 @@ gst_audio_frame_rate (GstPad *pad) if (caps == NULL) { /* ERROR: could not get caps of pad */ - g_warning ("gstaudio: could not get caps of pad %s:%s\n", - GST_ELEMENT_NAME (gst_pad_get_parent (pad)), GST_PAD_NAME (pad)); + g_warning ("gstaudio: could not get caps of pad %s:%s\n", + GST_ELEMENT_NAME (gst_pad_get_parent (pad)), GST_PAD_NAME (pad)); return 0; - } - else { + } else { structure = gst_caps_get_structure (caps, 0); - gst_structure_get_int (structure, "rate", &rate); + gst_structure_get_int (structure, "rate", &rate); return rate; } } -double -gst_audio_length (GstPad* pad, GstBuffer* buf) +double +gst_audio_length (GstPad * pad, GstBuffer * buf) { /* calculate length in seconds * of audio buffer buf @@ -125,20 +124,17 @@ gst_audio_length (GstPad* pad, GstBuffer* buf) g_assert (GST_IS_BUFFER (buf)); /* get caps of pad */ caps = GST_PAD_CAPS (pad); - if (caps == NULL) - { + if (caps == NULL) { /* ERROR: could not get caps of pad */ - g_warning ("gstaudio: could not get caps of pad %s:%s\n", - GST_ELEMENT_NAME (gst_pad_get_parent (pad)), GST_PAD_NAME (pad)); + g_warning ("gstaudio: could not get caps of pad %s:%s\n", + GST_ELEMENT_NAME (gst_pad_get_parent (pad)), GST_PAD_NAME (pad)); length = 0.0; - } - else - { + } else { structure = gst_caps_get_structure (caps, 0); bytes = GST_BUFFER_SIZE (buf); - gst_structure_get_int (structure, "width", &width); - gst_structure_get_int (structure, "channels", &channels); - gst_structure_get_int (structure, "rate", &rate); + gst_structure_get_int (structure, "width", &width); + gst_structure_get_int (structure, "channels", &channels); + gst_structure_get_int (structure, "rate", &rate); g_assert (bytes != 0); g_assert (width != 0); @@ -150,8 +146,8 @@ gst_audio_length (GstPad* pad, GstBuffer* buf) return length; } -long -gst_audio_highest_sample_value (GstPad* pad) +long +gst_audio_highest_sample_value (GstPad * pad) /* calculate highest possible sample value * based on capabilities of pad */ @@ -160,25 +156,25 @@ gst_audio_highest_sample_value (GstPad* pad) gint width = 0; const GstCaps *caps = NULL; GstStructure *structure; - + caps = GST_PAD_CAPS (pad); - if (caps == NULL) - { - g_warning ("gstaudio: could not get caps of pad %s:%s\n", - GST_ELEMENT_NAME (gst_pad_get_parent (pad)), GST_PAD_NAME (pad)); + if (caps == NULL) { + g_warning ("gstaudio: could not get caps of pad %s:%s\n", + GST_ELEMENT_NAME (gst_pad_get_parent (pad)), GST_PAD_NAME (pad)); } - + structure = gst_caps_get_structure (caps, 0); - gst_structure_get_int (structure, "width", &width); - gst_structure_get_boolean (structure, "signed", &is_signed); - - if (is_signed) --width; + gst_structure_get_int (structure, "width", &width); + gst_structure_get_boolean (structure, "signed", &is_signed); + + if (is_signed) + --width; /* example : 16 bit, signed : samples between -32768 and 32767 */ return ((long) (1 << width)); } -gboolean -gst_audio_is_buffer_framed (GstPad* pad, GstBuffer* buf) +gboolean +gst_audio_is_buffer_framed (GstPad * pad, GstBuffer * buf) /* check if the buffer size is a whole multiple of the frame size */ { if (GST_BUFFER_SIZE (buf) % gst_audio_frame_byte_size (pad) == 0) @@ -199,8 +195,8 @@ gst_audio_is_buffer_framed (GstPad* pad, GstBuffer* buf) * number of list values, and each of the values, terminating with NULL */ static void -_gst_audio_structure_set_list (GstStructure *structure, const gchar *fieldname, - GType type, int number, ...) +_gst_audio_structure_set_list (GstStructure * structure, + const gchar * fieldname, GType type, int number, ...) { va_list varargs; GValue value = { 0 }; @@ -214,27 +210,27 @@ _gst_audio_structure_set_list (GstStructure *structure, const gchar *fieldname, va_start (varargs, number); - for (j = 0; j < number; ++j) - { + for (j = 0; j < number; ++j) { int i; gboolean b; GValue list_value = { 0 }; - switch (type) - { + switch (type) { case G_TYPE_INT: - i = va_arg (varargs, int); - g_value_init (&list_value, G_TYPE_INT); - g_value_set_int (&list_value, i); - break; + i = va_arg (varargs, int); + + g_value_init (&list_value, G_TYPE_INT); + g_value_set_int (&list_value, i); + break; case G_TYPE_BOOLEAN: - b = va_arg (varargs, gboolean); - g_value_init (&list_value, G_TYPE_BOOLEAN); - g_value_set_boolean (&list_value, b); - break; - default: - g_warning ("_gst_audio_structure_set_list: LIST of given type not implemented."); + b = va_arg (varargs, gboolean); + g_value_init (&list_value, G_TYPE_BOOLEAN); + g_value_set_boolean (&list_value, b); + break; + default: + g_warning + ("_gst_audio_structure_set_list: LIST of given type not implemented."); } g_array_append_val (array, list_value); @@ -244,38 +240,38 @@ _gst_audio_structure_set_list (GstStructure *structure, const gchar *fieldname, } void -gst_audio_structure_set_int (GstStructure *structure, GstAudioFieldFlag flag) +gst_audio_structure_set_int (GstStructure * structure, GstAudioFieldFlag flag) { if (flag & GST_AUDIO_FIELD_RATE) - gst_structure_set (structure, "rate", GST_TYPE_INT_RANGE, 1, G_MAXINT, NULL); + gst_structure_set (structure, "rate", GST_TYPE_INT_RANGE, 1, G_MAXINT, + NULL); if (flag & GST_AUDIO_FIELD_CHANNELS) - gst_structure_set (structure, "channels", GST_TYPE_INT_RANGE, 1, G_MAXINT, NULL); + gst_structure_set (structure, "channels", GST_TYPE_INT_RANGE, 1, G_MAXINT, + NULL); if (flag & GST_AUDIO_FIELD_ENDIANNESS) - _gst_audio_structure_set_list (structure, "endianness", G_TYPE_INT, 2, G_LITTLE_ENDIAN, G_BIG_ENDIAN, NULL); + _gst_audio_structure_set_list (structure, "endianness", G_TYPE_INT, 2, + G_LITTLE_ENDIAN, G_BIG_ENDIAN, NULL); if (flag & GST_AUDIO_FIELD_WIDTH) - _gst_audio_structure_set_list (structure, "width", G_TYPE_INT, 3, 8, 16, 32, NULL); + _gst_audio_structure_set_list (structure, "width", G_TYPE_INT, 3, 8, 16, 32, + NULL); if (flag & GST_AUDIO_FIELD_DEPTH) gst_structure_set (structure, "depth", GST_TYPE_INT_RANGE, 1, 32, NULL); if (flag & GST_AUDIO_FIELD_SIGNED) - _gst_audio_structure_set_list (structure, "signed", G_TYPE_BOOLEAN, 2, TRUE, FALSE, NULL); + _gst_audio_structure_set_list (structure, "signed", G_TYPE_BOOLEAN, 2, TRUE, + FALSE, NULL); if (flag & GST_AUDIO_FIELD_BUFFER_FRAMES) - gst_structure_set (structure, "buffer-frames", GST_TYPE_INT_RANGE, 1, G_MAXINT, NULL); + gst_structure_set (structure, "buffer-frames", GST_TYPE_INT_RANGE, 1, + G_MAXINT, NULL); } static gboolean -plugin_init (GstPlugin *plugin) +plugin_init (GstPlugin * plugin) { return TRUE; } -GST_PLUGIN_DEFINE ( - GST_VERSION_MAJOR, - GST_VERSION_MINOR, - "gstaudio", - "Support services for audio plugins", - plugin_init, - VERSION, - GST_LICENSE, - GST_PACKAGE, - GST_ORIGIN -); +GST_PLUGIN_DEFINE (GST_VERSION_MAJOR, + GST_VERSION_MINOR, + "gstaudio", + "Support services for audio plugins", + plugin_init, VERSION, GST_LICENSE, GST_PACKAGE, GST_ORIGIN); |