h264_parser: K&R formatting cosmetics

1 files changed, 151 insertions, 130 deletions

diff --git a/libavcodec/h264_parser.c b/libavcodec/h264_parser.c
index 1f79f1ba2f..36829ecbea 100644
--- a/libavcodec/h264_parser.c
+++ b/libavcodec/h264_parser.c
@@ -34,68 +34,78 @@
 #include <assert.h>
 
 
-static int h264_find_frame_end(H264Context *h, const uint8_t *buf, int buf_size)
+static int h264_find_frame_end(H264Context *h, const uint8_t *buf,
+                               int buf_size)
 {
     int i;
     uint32_t state;
     ParseContext *pc = &h->parse_context;
 //    mb_addr= pc->mb_addr - 1;
-    state= pc->state;
-    if(state>13)
-        state= 7;
+    state = pc->state;
+    if (state > 13)
+        state = 7;
 
-    for(i=0; i<buf_size; i++){
-        if(state==7){
+    for (i = 0; i < buf_size; i++) {
+        if (state == 7) {
 #if HAVE_FAST_UNALIGNED
-        /* we check i<buf_size instead of i+3/7 because its simpler
-         * and there should be FF_INPUT_BUFFER_PADDING_SIZE bytes at the end
-         */
-#    if HAVE_FAST_64BIT
-            while(i<buf_size && !((~*(const uint64_t*)(buf+i) & (*(const uint64_t*)(buf+i) - 0x0101010101010101ULL)) & 0x8080808080808080ULL))
-                i+=8;
-#    else
-            while(i<buf_size && !((~*(const uint32_t*)(buf+i) & (*(const uint32_t*)(buf+i) - 0x01010101U)) & 0x80808080U))
-                i+=4;
-#    endif
+            /* we check i < buf_size instead of i + 3 / 7 because it is
+             * simpler and there must be FF_INPUT_BUFFER_PADDING_SIZE
+             * bytes at the end.
+             */
+#if HAVE_FAST_64BIT
+            while (i < buf_size &&
+                   !((~*(const uint64_t *)(buf + i) &
+                      (*(const uint64_t *)(buf + i) - 0x0101010101010101ULL)) &
+                      0x8080808080808080ULL))
+                i += 8;
+#else
+            while (i < buf_size &&
+                   !((~*(const uint32_t *)(buf + i) &
+                      (*(const uint32_t *)(buf + i) - 0x01010101U)) &
+                      0x80808080U))
+                i += 4;
+#endif
 #endif
-            for(; i<buf_size; i++){
-                if(!buf[i]){
-                    state=2;
+            for (; i < buf_size; i++)
+                if (!buf[i]) {
+                    state = 2;
                     break;
                 }
-            }
-        }else if(state<=2){
-            if(buf[i]==1)   state^= 5; //2->7, 1->4, 0->5
-            else if(buf[i]) state = 7;
-            else            state>>=1; //2->1, 1->0, 0->0
-        }else if(state<=5){
-            int v= buf[i] & 0x1F;
-            if(v==6 || v==7 || v==8 || v==9){
-                if(pc->frame_start_found){
+        } else if (state <= 2) {
+            if (buf[i] == 1)
+                state ^= 5;            // 2->7, 1->4, 0->5
+            else if (buf[i])
+                state = 7;
+            else
+                state >>= 1;           // 2->1, 1->0, 0->0
+        } else if (state <= 5) {
+            int v = buf[i] & 0x1F;
+            if (v == 6 || v == 7 || v == 8 || v == 9) {
+                if (pc->frame_start_found) {
                     i++;
                     goto found;
                 }
-            }else if(v==1 || v==2 || v==5){
-                if(pc->frame_start_found){
-                    state+=8;
+            } else if (v == 1 || v == 2 || v == 5) {
+                if (pc->frame_start_found) {
+                    state += 8;
                     continue;
-                }else
+                } else
                     pc->frame_start_found = 1;
             }
-            state= 7;
-        }else{
-            if(buf[i] & 0x80)
+            state = 7;
+        } else {
+            if (buf[i] & 0x80)
                 goto found;
-            state= 7;
+            state = 7;
         }
     }
-    pc->state= state;
+    pc->state = state;
     return END_NOT_FOUND;
 
 found:
-    pc->state=7;
-    pc->frame_start_found= 0;
-    return i-(state&5);
+    pc->state             = 7;
+    pc->frame_start_found = 0;
+    return i - (state & 5);
 }
 
 /**
@@ -110,7 +120,7 @@ static inline int parse_nal_units(AVCodecParserContext *s,
                                   AVCodecContext *avctx,
                                   const uint8_t *buf, int buf_size)
 {
-    H264Context *h = s->priv_data;
+    H264Context *h         = s->priv_data;
     const uint8_t *buf_end = buf + buf_size;
     unsigned int pps_id;
     unsigned int slice_type;
@@ -119,23 +129,23 @@ static inline int parse_nal_units(AVCodecParserContext *s,
     int field_poc[2];
 
     /* set some sane default values */
-    s->pict_type = AV_PICTURE_TYPE_I;
-    s->key_frame = 0;
+    s->pict_type         = AV_PICTURE_TYPE_I;
+    s->key_frame         = 0;
     s->picture_structure = AV_PICTURE_STRUCTURE_UNKNOWN;
 
-    h->avctx= avctx;
-    h->sei_recovery_frame_cnt = -1;
-    h->sei_dpb_output_delay         =  0;
+    h->avctx                        = avctx;
+    h->sei_recovery_frame_cnt       = -1;
+    h->sei_dpb_output_delay         = 0;
     h->sei_cpb_removal_delay        = -1;
-    h->sei_buffering_period_present =  0;
+    h->sei_buffering_period_present = 0;
 
     if (!buf_size)
         return 0;
 
-    for(;;) {
+    for (;;) {
         int src_length, dst_length, consumed;
         buf = avpriv_find_start_code(buf, buf_end, &state);
-        if(buf >= buf_end)
+        if (buf >= buf_end)
             break;
         --buf;
         src_length = buf_end - buf;
@@ -147,12 +157,12 @@ static inline int parse_nal_units(AVCodecParserContext *s,
                 src_length = 20;
             break;
         }
-        ptr= ff_h264_decode_nal(h, buf, &dst_length, &consumed, src_length);
-        if (ptr==NULL || dst_length < 0)
+        ptr = ff_h264_decode_nal(h, buf, &dst_length, &consumed, src_length);
+        if (ptr == NULL || dst_length < 0)
             break;
 
-        init_get_bits(&h->gb, ptr, 8*dst_length);
-        switch(h->nal_unit_type) {
+        init_get_bits(&h->gb, ptr, 8 * dst_length);
+        switch (h->nal_unit_type) {
         case NAL_SPS:
             ff_h264_decode_seq_parameter_set(h);
             break;
@@ -169,42 +179,45 @@ static inline int parse_nal_units(AVCodecParserContext *s,
             h->prev_frame_num_offset = 0;
             h->prev_poc_msb          =
             h->prev_poc_lsb          = 0;
-            /* fall through */
+        /* fall through */
         case NAL_SLICE:
             get_ue_golomb(&h->gb);  // skip first_mb_in_slice
-            slice_type = get_ue_golomb_31(&h->gb);
+            slice_type   = get_ue_golomb_31(&h->gb);
             s->pict_type = golomb_to_pict_type[slice_type % 5];
             if (h->sei_recovery_frame_cnt >= 0) {
                 /* key frame, since recovery_frame_cnt is set */
                 s->key_frame = 1;
             }
-            pps_id= get_ue_golomb(&h->gb);
-            if(pps_id>=MAX_PPS_COUNT) {
-                av_log(h->avctx, AV_LOG_ERROR, "pps_id out of range\n");
+            pps_id = get_ue_golomb(&h->gb);
+            if (pps_id >= MAX_PPS_COUNT) {
+                av_log(h->avctx, AV_LOG_ERROR,
+                       "pps_id out of range\n");
                 return -1;
             }
-            if(!h->pps_buffers[pps_id]) {
-                av_log(h->avctx, AV_LOG_ERROR, "non-existing PPS referenced\n");
+            if (!h->pps_buffers[pps_id]) {
+                av_log(h->avctx, AV_LOG_ERROR,
+                       "non-existing PPS referenced\n");
                 return -1;
             }
-            h->pps= *h->pps_buffers[pps_id];
-            if(!h->sps_buffers[h->pps.sps_id]) {
-                av_log(h->avctx, AV_LOG_ERROR, "non-existing SPS referenced\n");
+            h->pps = *h->pps_buffers[pps_id];
+            if (!h->sps_buffers[h->pps.sps_id]) {
+                av_log(h->avctx, AV_LOG_ERROR,
+                       "non-existing SPS referenced\n");
                 return -1;
             }
-            h->sps = *h->sps_buffers[h->pps.sps_id];
+            h->sps       = *h->sps_buffers[h->pps.sps_id];
             h->frame_num = get_bits(&h->gb, h->sps.log2_max_frame_num);
 
             avctx->profile = ff_h264_get_profile(&h->sps);
             avctx->level   = h->sps.level_idc;
 
-            if(h->sps.frame_mbs_only_flag){
-                h->picture_structure= PICT_FRAME;
-            }else{
-                if(get_bits1(&h->gb)) { //field_pic_flag
-                    h->picture_structure= PICT_TOP_FIELD + get_bits1(&h->gb); //bottom_field_flag
+            if (h->sps.frame_mbs_only_flag) {
+                h->picture_structure = PICT_FRAME;
+            } else {
+                if (get_bits1(&h->gb)) { // field_pic_flag
+                    h->picture_structure = PICT_TOP_FIELD + get_bits1(&h->gb); // bottom_field_flag
                 } else {
-                    h->picture_structure= PICT_FRAME;
+                    h->picture_structure = PICT_FRAME;
                 }
             }
 
@@ -213,43 +226,46 @@ static inline int parse_nal_units(AVCodecParserContext *s,
             if (h->sps.poc_type == 0) {
                 h->poc_lsb = get_bits(&h->gb, h->sps.log2_max_poc_lsb);
 
-                if (h->pps.pic_order_present == 1 && h->picture_structure == PICT_FRAME)
+                if (h->pps.pic_order_present == 1 &&
+                    h->picture_structure == PICT_FRAME)
                     h->delta_poc_bottom = get_se_golomb(&h->gb);
             }
 
-            if (h->sps.poc_type == 1 && !h->sps.delta_pic_order_always_zero_flag) {
+            if (h->sps.poc_type == 1 &&
+                !h->sps.delta_pic_order_always_zero_flag) {
                 h->delta_poc[0] = get_se_golomb(&h->gb);
 
-                if (h->pps.pic_order_present == 1 && h->picture_structure == PICT_FRAME)
+                if (h->pps.pic_order_present == 1 &&
+                    h->picture_structure == PICT_FRAME)
                     h->delta_poc[1] = get_se_golomb(&h->gb);
             }
 
             ff_init_poc(h, field_poc, NULL);
 
-            if(h->sps.pic_struct_present_flag) {
+            if (h->sps.pic_struct_present_flag) {
                 switch (h->sei_pic_struct) {
-                    case SEI_PIC_STRUCT_TOP_FIELD:
-                    case SEI_PIC_STRUCT_BOTTOM_FIELD:
-                        s->repeat_pict = 0;
-                        break;
-                    case SEI_PIC_STRUCT_FRAME:
-                    case SEI_PIC_STRUCT_TOP_BOTTOM:
-                    case SEI_PIC_STRUCT_BOTTOM_TOP:
-                        s->repeat_pict = 1;
-                        break;
-                    case SEI_PIC_STRUCT_TOP_BOTTOM_TOP:
-                    case SEI_PIC_STRUCT_BOTTOM_TOP_BOTTOM:
-                        s->repeat_pict = 2;
-                        break;
-                    case SEI_PIC_STRUCT_FRAME_DOUBLING:
-                        s->repeat_pict = 3;
-                        break;
-                    case SEI_PIC_STRUCT_FRAME_TRIPLING:
-                        s->repeat_pict = 5;
-                        break;
-                    default:
-                        s->repeat_pict = h->picture_structure == PICT_FRAME ? 1 : 0;
-                        break;
+                case SEI_PIC_STRUCT_TOP_FIELD:
+                case SEI_PIC_STRUCT_BOTTOM_FIELD:
+                    s->repeat_pict = 0;
+                    break;
+                case SEI_PIC_STRUCT_FRAME:
+                case SEI_PIC_STRUCT_TOP_BOTTOM:
+                case SEI_PIC_STRUCT_BOTTOM_TOP:
+                    s->repeat_pict = 1;
+                    break;
+                case SEI_PIC_STRUCT_TOP_BOTTOM_TOP:
+                case SEI_PIC_STRUCT_BOTTOM_TOP_BOTTOM:
+                    s->repeat_pict = 2;
+                    break;
+                case SEI_PIC_STRUCT_FRAME_DOUBLING:
+                    s->repeat_pict = 3;
+                    break;
+                case SEI_PIC_STRUCT_FRAME_TRIPLING:
+                    s->repeat_pict = 5;
+                    break;
+                default:
+                    s->repeat_pict = h->picture_structure == PICT_FRAME ? 1 : 0;
+                    break;
                 }
             } else {
                 s->repeat_pict = h->picture_structure == PICT_FRAME ? 1 : 0;
@@ -259,17 +275,17 @@ static inline int parse_nal_units(AVCodecParserContext *s,
                 s->picture_structure = AV_PICTURE_STRUCTURE_FRAME;
                 if (h->sps.pic_struct_present_flag) {
                     switch (h->sei_pic_struct) {
-                        case SEI_PIC_STRUCT_TOP_BOTTOM:
-                        case SEI_PIC_STRUCT_TOP_BOTTOM_TOP:
-                            s->field_order = AV_FIELD_TT;
-                            break;
-                        case SEI_PIC_STRUCT_BOTTOM_TOP:
-                        case SEI_PIC_STRUCT_BOTTOM_TOP_BOTTOM:
-                            s->field_order = AV_FIELD_BB;
-                            break;
-                        default:
-                            s->field_order = AV_FIELD_PROGRESSIVE;
-                            break;
+                    case SEI_PIC_STRUCT_TOP_BOTTOM:
+                    case SEI_PIC_STRUCT_TOP_BOTTOM_TOP:
+                        s->field_order = AV_FIELD_TT;
+                        break;
+                    case SEI_PIC_STRUCT_BOTTOM_TOP:
+                    case SEI_PIC_STRUCT_BOTTOM_TOP_BOTTOM:
+                        s->field_order = AV_FIELD_BB;
+                        break;
+                    default:
+                        s->field_order = AV_FIELD_PROGRESSIVE;
+                        break;
                     }
                 } else {
                     if (field_poc[0] < field_poc[1])
@@ -301,7 +317,7 @@ static int h264_parse(AVCodecParserContext *s,
                       const uint8_t **poutbuf, int *poutbuf_size,
                       const uint8_t *buf, int buf_size)
 {
-    H264Context *h = s->priv_data;
+    H264Context *h   = s->priv_data;
     ParseContext *pc = &h->parse_context;
     int next;
 
@@ -320,19 +336,19 @@ static int h264_parse(AVCodecParserContext *s,
         }
     }
 
-    if(s->flags & PARSER_FLAG_COMPLETE_FRAMES){
-        next= buf_size;
-    }else{
+    if (s->flags & PARSER_FLAG_COMPLETE_FRAMES) {
+        next = buf_size;
+    } else {
         next = h264_find_frame_end(h, buf, buf_size);
 
         if (ff_combine_frame(pc, next, &buf, &buf_size) < 0) {
-            *poutbuf = NULL;
+            *poutbuf      = NULL;
             *poutbuf_size = 0;
             return buf_size;
         }
 
-        if(next<0 && next != END_NOT_FOUND){
-            assert(pc->last_index + next >= 0 );
+        if (next < 0 && next != END_NOT_FOUND) {
+            assert(pc->last_index + next >= 0);
             h264_find_frame_end(h, &pc->buffer[pc->last_index + next], -next); // update state
         }
     }
@@ -353,7 +369,7 @@ static int h264_parse(AVCodecParserContext *s,
         s->flags &= PARSER_FLAG_COMPLETE_FRAMES;
     }
 
-    *poutbuf = buf;
+    *poutbuf      = buf;
     *poutbuf_size = buf_size;
     return next;
 }
@@ -363,28 +379,33 @@ static int h264_split(AVCodecContext *avctx,
 {
     int i;
     uint32_t state = -1;
-    int has_sps= 0;
-
-    for(i=0; i<=buf_size; i++){
-        if((state&0xFFFFFF1F) == 0x107)
-            has_sps=1;
-/*        if((state&0xFFFFFF1F) == 0x101 || (state&0xFFFFFF1F) == 0x102 || (state&0xFFFFFF1F) == 0x105){
-        }*/
-        if((state&0xFFFFFF00) == 0x100 && (state&0xFFFFFF1F) != 0x107 && (state&0xFFFFFF1F) != 0x108 && (state&0xFFFFFF1F) != 0x109){
-            if(has_sps){
-                while(i>4 && buf[i-5]==0) i--;
-                return i-4;
+    int has_sps    = 0;
+
+    for (i = 0; i <= buf_size; i++) {
+        if ((state & 0xFFFFFF1F) == 0x107)
+            has_sps = 1;
+        /*  if((state&0xFFFFFF1F) == 0x101 ||
+         *     (state&0xFFFFFF1F) == 0x102 ||
+         *     (state&0xFFFFFF1F) == 0x105) {
+         *  }
+         */
+        if ((state & 0xFFFFFF00) == 0x100 && (state & 0xFFFFFF1F) != 0x107 &&
+            (state & 0xFFFFFF1F) != 0x108 && (state & 0xFFFFFF1F) != 0x109) {
+            if (has_sps) {
+                while (i > 4 && buf[i - 5] == 0)
+                    i--;
+                return i - 4;
             }
         }
-        if (i<buf_size)
-            state= (state<<8) | buf[i];
+        if (i < buf_size)
+            state = (state << 8) | buf[i];
     }
     return 0;
 }
 
 static void close(AVCodecParserContext *s)
 {
-    H264Context *h = s->priv_data;
+    H264Context *h   = s->priv_data;
     ParseContext *pc = &h->parse_context;
 
     av_free(pc->buffer);
@@ -394,7 +415,7 @@ static void close(AVCodecParserContext *s)
 static av_cold int init(AVCodecParserContext *s)
 {
     H264Context *h = s->priv_data;
-    h->thread_context[0] = h;
+    h->thread_context[0]   = h;
     h->slice_context_count = 1;
     return 0;
 }