h264_sei: K&R formatting cosmetics
authorVittorio Giovara <vittorio.giovara@gmail.com>
Wed, 31 Jul 2013 08:13:22 +0000 (10:13 +0200)
committerDiego Biurrun <diego@biurrun.de>
Thu, 1 Aug 2013 11:26:07 +0000 (13:26 +0200)
Signed-off-by: Diego Biurrun <diego@biurrun.de>
libavcodec/h264_sei.c

index c88f203..4fe5193 100644 (file)
 //#undef NDEBUG
 #include <assert.h>
 
-static const uint8_t sei_num_clock_ts_table[9]={
-    1,  1,  1,  2,  2,  3,  3,  2,  3
+static const uint8_t sei_num_clock_ts_table[9] = {
+    1, 1, 1, 2, 2, 3, 3, 2, 3
 };
 
-void ff_h264_reset_sei(H264Context *h) {
+void ff_h264_reset_sei(H264Context *h)
+{
     h->sei_recovery_frame_cnt       = -1;
     h->sei_dpb_output_delay         =  0;
     h->sei_cpb_removal_delay        = -1;
     h->sei_buffering_period_present =  0;
 }
 
-static int decode_picture_timing(H264Context *h){
-    if(h->sps.nal_hrd_parameters_present_flag || h->sps.vcl_hrd_parameters_present_flag){
-        h->sei_cpb_removal_delay = get_bits(&h->gb, h->sps.cpb_removal_delay_length);
-        h->sei_dpb_output_delay = get_bits(&h->gb, h->sps.dpb_output_delay_length);
+static int decode_picture_timing(H264Context *h)
+{
+    if (h->sps.nal_hrd_parameters_present_flag ||
+        h->sps.vcl_hrd_parameters_present_flag) {
+        h->sei_cpb_removal_delay = get_bits(&h->gb,
+                                            h->sps.cpb_removal_delay_length);
+        h->sei_dpb_output_delay  = get_bits(&h->gb,
+                                            h->sps.dpb_output_delay_length);
     }
-    if(h->sps.pic_struct_present_flag){
+    if (h->sps.pic_struct_present_flag) {
         unsigned int i, num_clock_ts;
+
         h->sei_pic_struct = get_bits(&h->gb, 4);
         h->sei_ct_type    = 0;
 
@@ -59,81 +65,91 @@ static int decode_picture_timing(H264Context *h){
 
         num_clock_ts = sei_num_clock_ts_table[h->sei_pic_struct];
 
-        for (i = 0 ; i < num_clock_ts ; i++){
-            if(get_bits(&h->gb, 1)){                  /* clock_timestamp_flag */
+        for (i = 0; i < num_clock_ts; i++) {
+            if (get_bits(&h->gb, 1)) {                /* clock_timestamp_flag */
                 unsigned int full_timestamp_flag;
-                h->sei_ct_type |= 1<<get_bits(&h->gb, 2);
+
+                h->sei_ct_type |= 1 << get_bits(&h->gb, 2);
                 skip_bits(&h->gb, 1);                 /* nuit_field_based_flag */
                 skip_bits(&h->gb, 5);                 /* counting_type */
                 full_timestamp_flag = get_bits(&h->gb, 1);
                 skip_bits(&h->gb, 1);                 /* discontinuity_flag */
                 skip_bits(&h->gb, 1);                 /* cnt_dropped_flag */
                 skip_bits(&h->gb, 8);                 /* n_frames */
-                if(full_timestamp_flag){
+                if (full_timestamp_flag) {
                     skip_bits(&h->gb, 6);             /* seconds_value 0..59 */
                     skip_bits(&h->gb, 6);             /* minutes_value 0..59 */
                     skip_bits(&h->gb, 5);             /* hours_value 0..23 */
-                }else{
-                    if(get_bits(&h->gb, 1)){          /* seconds_flag */
+                } else {
+                    if (get_bits(&h->gb, 1)) {        /* seconds_flag */
                         skip_bits(&h->gb, 6);         /* seconds_value range 0..59 */
-                        if(get_bits(&h->gb, 1)){      /* minutes_flag */
+                        if (get_bits(&h->gb, 1)) {    /* minutes_flag */
                             skip_bits(&h->gb, 6);     /* minutes_value 0..59 */
-                            if(get_bits(&h->gb, 1))   /* hours_flag */
+                            if (get_bits(&h->gb, 1))  /* hours_flag */
                                 skip_bits(&h->gb, 5); /* hours_value 0..23 */
                         }
                     }
                 }
-                if(h->sps.time_offset_length > 0)
-                    skip_bits(&h->gb, h->sps.time_offset_length); /* time_offset */
+                if (h->sps.time_offset_length > 0)
+                    skip_bits(&h->gb,
+                              h->sps.time_offset_length); /* time_offset */
             }
         }
 
-        if(h->avctx->debug & FF_DEBUG_PICT_INFO)
-            av_log(h->avctx, AV_LOG_DEBUG, "ct_type:%X pic_struct:%d\n", h->sei_ct_type, h->sei_pic_struct);
+        if (h->avctx->debug & FF_DEBUG_PICT_INFO)
+            av_log(h->avctx, AV_LOG_DEBUG, "ct_type:%X pic_struct:%d\n",
+                   h->sei_ct_type, h->sei_pic_struct);
     }
     return 0;
 }
 
-static int decode_unregistered_user_data(H264Context *h, int size){
-    uint8_t user_data[16+256];
+static int decode_unregistered_user_data(H264Context *h, int size)
+{
+    uint8_t user_data[16 + 256];
     int e, build, i;
 
-    if(size<16)
+    if (size < 16)
         return -1;
 
-    for(i=0; i<sizeof(user_data)-1 && i<size; i++){
-        user_data[i]= get_bits(&h->gb, 8);
-    }
+    for (i = 0; i < sizeof(user_data) - 1 && i < size; i++)
+        user_data[i] = get_bits(&h->gb, 8);
 
-    user_data[i]= 0;
+    user_data[i] = 0;
     e = sscanf(user_data + 16, "x264 - core %d", &build);
-    if(e==1 && build>0)
-        h->x264_build= build;
+    if (e == 1 && build > 0)
+        h->x264_build = build;
 
-    if(h->avctx->debug & FF_DEBUG_BUGS)
-        av_log(h->avctx, AV_LOG_DEBUG, "user data:\"%s\"\n", user_data+16);
+    if (h->avctx->debug & FF_DEBUG_BUGS)
+        av_log(h->avctx, AV_LOG_DEBUG, "user data:\"%s\"\n", user_data + 16);
 
-    for(; i<size; i++)
+    for (; i < size; i++)
         skip_bits(&h->gb, 8);
 
     return 0;
 }
 
-static int decode_recovery_point(H264Context *h){
+static int decode_recovery_point(H264Context *h)
+{
     h->sei_recovery_frame_cnt = get_ue_golomb(&h->gb);
-    skip_bits(&h->gb, 4);       /* 1b exact_match_flag, 1b broken_link_flag, 2b changing_slice_group_idc */
+
+    /* 1b exact_match_flag,
+     * 1b broken_link_flag,
+     * 2b changing_slice_group_idc */
+    skip_bits(&h->gb, 4);
 
     return 0;
 }
 
-static int decode_buffering_period(H264Context *h){
+static int decode_buffering_period(H264Context *h)
+{
     unsigned int sps_id;
     int sched_sel_idx;
     SPS *sps;
 
     sps_id = get_ue_golomb_31(&h->gb);
-    if(sps_id > 31 || !h->sps_buffers[sps_id]) {
-        av_log(h->avctx, AV_LOG_ERROR, "non-existing SPS %d referenced in buffering period\n", sps_id);
+    if (sps_id > 31 || !h->sps_buffers[sps_id]) {
+        av_log(h->avctx, AV_LOG_ERROR,
+               "non-existing SPS %d referenced in buffering period\n", sps_id);
         return -1;
     }
     sps = h->sps_buffers[sps_id];
@@ -141,14 +157,18 @@ static int decode_buffering_period(H264Context *h){
     // NOTE: This is really so duplicated in the standard... See H.264, D.1.1
     if (sps->nal_hrd_parameters_present_flag) {
         for (sched_sel_idx = 0; sched_sel_idx < sps->cpb_cnt; sched_sel_idx++) {
-            h->initial_cpb_removal_delay[sched_sel_idx] = get_bits(&h->gb, sps->initial_cpb_removal_delay_length);
-            skip_bits(&h->gb, sps->initial_cpb_removal_delay_length); // initial_cpb_removal_delay_offset
+            h->initial_cpb_removal_delay[sched_sel_idx] =
+                get_bits(&h->gb, sps->initial_cpb_removal_delay_length);
+            // initial_cpb_removal_delay_offset
+            skip_bits(&h->gb, sps->initial_cpb_removal_delay_length);
         }
     }
     if (sps->vcl_hrd_parameters_present_flag) {
         for (sched_sel_idx = 0; sched_sel_idx < sps->cpb_cnt; sched_sel_idx++) {
-            h->initial_cpb_removal_delay[sched_sel_idx] = get_bits(&h->gb, sps->initial_cpb_removal_delay_length);
-            skip_bits(&h->gb, sps->initial_cpb_removal_delay_length); // initial_cpb_removal_delay_offset
+            h->initial_cpb_removal_delay[sched_sel_idx] =
+                get_bits(&h->gb, sps->initial_cpb_removal_delay_length);
+            // initial_cpb_removal_delay_offset
+            skip_bits(&h->gb, sps->initial_cpb_removal_delay_length);
         }
     }
 
@@ -156,42 +176,42 @@ static int decode_buffering_period(H264Context *h){
     return 0;
 }
 
-int ff_h264_decode_sei(H264Context *h){
+int ff_h264_decode_sei(H264Context *h)
+{
     while (get_bits_left(&h->gb) > 16) {
-        int size, type;
+        int size = 0;
+        int type = 0;
 
-        type=0;
-        do{
-            type+= show_bits(&h->gb, 8);
-        }while(get_bits(&h->gb, 8) == 255);
+        do
+            type += show_bits(&h->gb, 8);
+        while (get_bits(&h->gb, 8) == 255);
 
-        size=0;
-        do{
-            size+= show_bits(&h->gb, 8);
-        }while(get_bits(&h->gb, 8) == 255);
+        do
+            size += show_bits(&h->gb, 8);
+        while (get_bits(&h->gb, 8) == 255);
 
-        switch(type){
+        switch (type) {
         case SEI_TYPE_PIC_TIMING: // Picture timing SEI
-            if(decode_picture_timing(h) < 0)
+            if (decode_picture_timing(h) < 0)
                 return -1;
             break;
         case SEI_TYPE_USER_DATA_UNREGISTERED:
-            if(decode_unregistered_user_data(h, size) < 0)
+            if (decode_unregistered_user_data(h, size) < 0)
                 return -1;
             break;
         case SEI_TYPE_RECOVERY_POINT:
-            if(decode_recovery_point(h) < 0)
+            if (decode_recovery_point(h) < 0)
                 return -1;
             break;
         case SEI_BUFFERING_PERIOD:
-            if(decode_buffering_period(h) < 0)
+            if (decode_buffering_period(h) < 0)
                 return -1;
             break;
         default:
-            skip_bits(&h->gb, 8*size);
+            skip_bits(&h->gb, 8 * size);
         }
 
-        //FIXME check bits here
+        // FIXME check bits here
         align_get_bits(&h->gb);
     }