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h264parse: Start SPS parsing work

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Lin YANG 2009-08-17 17:38:59 +08:00 committed by Sebastian Dröge
parent adb4130e65
commit 196b8240e2
2 changed files with 66 additions and 0 deletions
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59
gst/h264parse/gsth264parse.c
View file

@ -210,6 +210,65 @@ gst_nal_bs_read_ue (GstNalBs * bs)
return ((1 << i) - 1 + gst_nal_bs_read (bs, i));
}
/* SPS: sequential parameter sets */
struct _GstH264Sps
{
guint8 profile_idc;
guint8 level_idc;
guint8 sps_id;
guint8 pic_order_cnt_type;
guint8 log2_max_frame_num_minus4;
gboolean frame_mbs_only_flag;
guint8 log2_max_pic_order_cnt_lsb_minus4;
gboolean frame_cropping_flag;
/* VUI parameters */
gboolean vui_parameters_present_flag;
gboolean timing_info_present_flag;
guint32 num_units_in_tick;
guint32 time_scale;
gboolean fixed_frame_rate_flag;
gboolean nal_hrd_parameters_present_flag;
gboolean vcl_hrd_parameters_present_flag;
/* hrd parameters */
guint8 cpb_cnt_minus1;
gint initial_cpb_removal_delay_length_minus1; /* initial_cpb_removal_delay_length_minus1 */
gint cpb_removal_delay_length_minus1; /* cpb_removal_delay_length_minus1 */
gint dpb_output_delay_length_minus1; /* dpb_output_delay_length_minus1 */
gboolean time_offset_length_minus1;
gboolean pic_struct_present_flag;
/* And more... */
};
static GstH264Sps *
gst_h264_parse_get_sps (GstH264Parse * h, guint8 sps_id)
{
GstH264Sps *sps;
g_return_val_if_fail (h != NULL, NULL);
if (sps_id >= MAX_SPS_COUNT) {
GST_DEBUG_OBJECT (h, "requested sps_id=%04x out of range", sps_id);
return NULL;
}
sps = h->sps_buffers[sps_id];
if (sps == NULL) {
GST_DEBUG_OBJECT (h, "Creating sps with sps_id=%04x", sps_id);
sps = h->sps_buffers[sps_id] = g_slice_new0 (GstH264Sps);
if (sps == NULL) {
GST_DEBUG_OBJECT (h, "Allocation failed!");
}
}
h->sps = h->sps_buffers[sps_id] = sps;
return sps;
}
GST_BOILERPLATE (GstH264Parse, gst_h264_parse, GstElement, GST_TYPE_ELEMENT);

7
gst/h264parse/gsth264parse.h
View file

@ -44,6 +44,9 @@ typedef struct _GstH264ParseClass GstH264ParseClass;
typedef struct _GstNalList GstNalList;
typedef struct _GstH264Sps GstH264Sps;
#define MAX_SPS_COUNT 32
struct _GstH264Parse
{
GstElement element;
@ -68,6 +71,10 @@ struct _GstH264Parse
gboolean have_i_frame;
GstAdapter *adapter;
/* SPS: sequential parameter set */
GstH264Sps *sps_buffers[MAX_SPS_COUNT];
GstH264Sps *sps; /* Current SPS */
};
struct _GstH264ParseClass