]> git.sesse.net Git - ffmpeg/blobdiff - libavcodec/h264_parser.c
vc1dec: Update destination pointers in context for fields
[ffmpeg] / libavcodec / h264_parser.c
index 0464476382c6cd5583a2b1d37ef10f59afcfe1c6..e5d2c03f8afc5176194b99d4f8efab919340260c 100644 (file)
  * @author Michael Niedermayer <michaelni@gmx.at>
  */
 
+#include "libavutil/attributes.h"
 #include "parser.h"
 #include "h264data.h"
 #include "golomb.h"
+#include "internal.h"
 
 #include <assert.h>
 
 
-static int ff_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->s.parse_context);
+    ParseContext *pc = &h->parse_context;
 //    mb_addr= pc->mb_addr - 1;
     state= pc->state;
     if(state>13)
@@ -119,7 +121,7 @@ static inline int parse_nal_units(AVCodecParserContext *s,
     s->pict_type = AV_PICTURE_TYPE_I;
     s->key_frame = 0;
 
-    h->s.avctx= avctx;
+    h->avctx= avctx;
     h->sei_recovery_frame_cnt = -1;
     h->sei_dpb_output_delay         =  0;
     h->sei_cpb_removal_delay        = -1;
@@ -130,7 +132,7 @@ static inline int parse_nal_units(AVCodecParserContext *s,
 
     for(;;) {
         int src_length, dst_length, consumed;
-        buf = avpriv_mpv_find_start_code(buf, buf_end, &state);
+        buf = avpriv_find_start_code(buf, buf_end, &state);
         if(buf >= buf_end)
             break;
         --buf;
@@ -147,13 +149,13 @@ static inline int parse_nal_units(AVCodecParserContext *s,
         if (ptr==NULL || dst_length < 0)
             break;
 
-        init_get_bits(&h->s.gb, ptr, 8*dst_length);
+        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;
         case NAL_PPS:
-            ff_h264_decode_picture_parameter_set(h, h->s.gb.size_in_bits);
+            ff_h264_decode_picture_parameter_set(h, h->gb.size_in_bits);
             break;
         case NAL_SEI:
             ff_h264_decode_sei(h);
@@ -162,40 +164,40 @@ static inline int parse_nal_units(AVCodecParserContext *s,
             s->key_frame = 1;
             /* fall through */
         case NAL_SLICE:
-            get_ue_golomb(&h->s.gb);  // skip first_mb_in_slice
-            slice_type = get_ue_golomb_31(&h->s.gb);
+            get_ue_golomb(&h->gb);  // skip first_mb_in_slice
+            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->s.gb);
+            pps_id= get_ue_golomb(&h->gb);
             if(pps_id>=MAX_PPS_COUNT) {
-                av_log(h->s.avctx, AV_LOG_ERROR, "pps_id out of range\n");
+                av_log(h->avctx, AV_LOG_ERROR, "pps_id out of range\n");
                 return -1;
             }
             if(!h->pps_buffers[pps_id]) {
-                av_log(h->s.avctx, AV_LOG_ERROR, "non-existing PPS referenced\n");
+                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->s.avctx, AV_LOG_ERROR, "non-existing SPS referenced\n");
+                av_log(h->avctx, AV_LOG_ERROR, "non-existing SPS referenced\n");
                 return -1;
             }
             h->sps = *h->sps_buffers[h->pps.sps_id];
-            h->frame_num = get_bits(&h->s.gb, h->sps.log2_max_frame_num);
+            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->s.picture_structure= PICT_FRAME;
+                h->picture_structure= PICT_FRAME;
             }else{
-                if(get_bits1(&h->s.gb)) { //field_pic_flag
-                    h->s.picture_structure= PICT_TOP_FIELD + get_bits1(&h->s.gb); //bottom_field_flag
+                if(get_bits1(&h->gb)) { //field_pic_flag
+                    h->picture_structure= PICT_TOP_FIELD + get_bits1(&h->gb); //bottom_field_flag
                 } else {
-                    h->s.picture_structure= PICT_FRAME;
+                    h->picture_structure= PICT_FRAME;
                 }
             }
 
@@ -221,11 +223,11 @@ static inline int parse_nal_units(AVCodecParserContext *s,
                         s->repeat_pict = 5;
                         break;
                     default:
-                        s->repeat_pict = h->s.picture_structure == PICT_FRAME ? 1 : 0;
+                        s->repeat_pict = h->picture_structure == PICT_FRAME ? 1 : 0;
                         break;
                 }
             } else {
-                s->repeat_pict = h->s.picture_structure == PICT_FRAME ? 1 : 0;
+                s->repeat_pict = h->picture_structure == PICT_FRAME ? 1 : 0;
             }
 
             return 0; /* no need to evaluate the rest */
@@ -233,7 +235,7 @@ static inline int parse_nal_units(AVCodecParserContext *s,
         buf += consumed;
     }
     /* didn't find a picture! */
-    av_log(h->s.avctx, AV_LOG_ERROR, "missing picture in access unit\n");
+    av_log(h->avctx, AV_LOG_ERROR, "missing picture in access unit\n");
     return -1;
 }
 
@@ -243,20 +245,20 @@ static int h264_parse(AVCodecParserContext *s,
                       const uint8_t *buf, int buf_size)
 {
     H264Context *h = s->priv_data;
-    ParseContext *pc = &h->s.parse_context;
+    ParseContext *pc = &h->parse_context;
     int next;
 
     if (!h->got_first) {
         h->got_first = 1;
         if (avctx->extradata_size) {
-            h->s.avctx = avctx;
+            h->avctx = avctx;
             // must be done like in the decoder.
             // otherwise opening the parser, creating extradata,
             // and then closing and opening again
             // will cause has_b_frames to be always set.
             // NB: estimate_timings_from_pts behaves exactly like this.
             if (!avctx->has_b_frames)
-                h->s.low_delay = 1;
+                h->low_delay = 1;
             ff_h264_decode_extradata(h);
         }
     }
@@ -264,7 +266,7 @@ static int h264_parse(AVCodecParserContext *s,
     if(s->flags & PARSER_FLAG_COMPLETE_FRAMES){
         next= buf_size;
     }else{
-        next= ff_h264_find_frame_end(h, buf, buf_size);
+        next = h264_find_frame_end(h, buf, buf_size);
 
         if (ff_combine_frame(pc, next, &buf, &buf_size) < 0) {
             *poutbuf = NULL;
@@ -274,7 +276,7 @@ static int h264_parse(AVCodecParserContext *s,
 
         if(next<0 && next != END_NOT_FOUND){
             assert(pc->last_index + next >= 0 );
-            ff_h264_find_frame_end(h, &pc->buffer[pc->last_index + next], -next); //update state
+            h264_find_frame_end(h, &pc->buffer[pc->last_index + next], -next); // update state
         }
     }
 
@@ -326,17 +328,17 @@ static int h264_split(AVCodecContext *avctx,
 static void close(AVCodecParserContext *s)
 {
     H264Context *h = s->priv_data;
-    ParseContext *pc = &h->s.parse_context;
+    ParseContext *pc = &h->parse_context;
 
     av_free(pc->buffer);
     ff_h264_free_context(h);
 }
 
-static int init(AVCodecParserContext *s)
+static av_cold int init(AVCodecParserContext *s)
 {
     H264Context *h = s->priv_data;
     h->thread_context[0] = h;
-    h->s.slice_context_count = 1;
+    h->slice_context_count = 1;
     return 0;
 }