Merge commit '4f50646697606df39317b93c2a427603b77636ee'

[ffmpeg] / libavcodec / h264.h

diff --git a/libavcodec/h264.h b/libavcodec/h264.h
index 30494706a8a95aedb7874007a702acc867fb5c0c..3355d05e97a6d7c6075452335e747db112cd574d 100644 (file)
--- a/libavcodec/h264.h
+++ b/libavcodec/h264.h
@@ -2,20 +2,20 @@
  * H.26L/H.264/AVC/JVT/14496-10/... encoder/decoder
  * Copyright (c) 2003 Michael Niedermayer <michaelni@gmx.at>
  *
- * This file is part of Libav.
+ * This file is part of FFmpeg.
  *
- * Libav is free software; you can redistribute it and/or
+ * FFmpeg is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public
  * License as published by the Free Software Foundation; either
  * version 2.1 of the License, or (at your option) any later version.
  *
- * Libav is distributed in the hope that it will be useful,
+ * FFmpeg is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  * Lesser General Public License for more details.
  *
  * You should have received a copy of the GNU Lesser General Public
- * License along with Libav; if not, write to the Free Software
+ * License along with FFmpeg; if not, write to the Free Software
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  */
 
@@ -46,6 +46,8 @@
 
 #define MAX_DELAYED_PIC_COUNT  16
 
+#define MAX_MBPAIR_SIZE (256*1024) // a tighter bound could be calculated if someone cares about a few bytes
+
 /* Compiling in interlaced support reduces the speed
  * of progressive decoding by about 2%. */
 #define ALLOW_INTERLACE
@@ -85,6 +87,7 @@
 #define CABAC h->pps.cabac
 #endif
 
+#define CHROMA    (h->sps.chroma_format_idc)
 #define CHROMA422 (h->sps.chroma_format_idc == 2)
 #define CHROMA444 (h->sps.chroma_format_idc == 3)
 
@@ -95,7 +98,7 @@
 #define IS_REF0(a)         ((a) & MB_TYPE_REF0)
 #define IS_8x8DCT(a)       ((a) & MB_TYPE_8x8DCT)
 
-#define QP_MAX_NUM (51 + 2 * 6)           // The maximum supported qp
+#define QP_MAX_NUM (51 + 6*6)           // The maximum supported qp
 
 /* NAL unit types */
 enum {
@@ -122,6 +125,7 @@ enum {
 typedef enum {
     SEI_BUFFERING_PERIOD            = 0,   ///< buffering period (H.264, D.1.1)
     SEI_TYPE_PIC_TIMING             = 1,   ///< picture timing
+    SEI_TYPE_USER_DATA_ITU_T_T35    = 4,   ///< user data registered by ITU-T Recommendation T.35
     SEI_TYPE_USER_DATA_UNREGISTERED = 5,   ///< unregistered user data
     SEI_TYPE_RECOVERY_POINT         = 6    ///< recovery point (frame # to decoder sync)
 } SEI_Type;
@@ -222,7 +226,7 @@ typedef struct PPS {
     int transform_8x8_mode;         ///< transform_8x8_mode_flag
     uint8_t scaling_matrix4[6][16];
     uint8_t scaling_matrix8[6][64];
-    uint8_t chroma_qp_table[2][64]; ///< pre-scaled (with chroma_qp_index_offset) version of qp_table
+    uint8_t chroma_qp_table[2][QP_MAX_NUM+1];  ///< pre-scaled (with chroma_qp_index_offset) version of qp_table
     int chroma_qp_diff;
 } PPS;
 
@@ -364,7 +368,7 @@ typedef struct H264Context {
     int direct_spatial_mv_pred;
     int col_parity;
     int col_fieldoff;
-    int dist_scale_factor[16];
+    int dist_scale_factor[32];
     int dist_scale_factor_field[2][32];
     int map_col_to_list0[2][16 + 32];
     int map_col_to_list0_field[2][2][16 + 32];
@@ -415,12 +419,12 @@ typedef struct H264Context {
     uint8_t field_scan[16];
     uint8_t field_scan8x8[64];
     uint8_t field_scan8x8_cavlc[64];
-    const uint8_t *zigzag_scan_q0;
-    const uint8_t *zigzag_scan8x8_q0;
-    const uint8_t *zigzag_scan8x8_cavlc_q0;
-    const uint8_t *field_scan_q0;
-    const uint8_t *field_scan8x8_q0;
-    const uint8_t *field_scan8x8_cavlc_q0;
+    uint8_t zigzag_scan_q0[16];
+    uint8_t zigzag_scan8x8_q0[64];
+    uint8_t zigzag_scan8x8_cavlc_q0[64];
+    uint8_t field_scan_q0[16];
+    uint8_t field_scan8x8_q0[64];
+    uint8_t field_scan8x8_cavlc_q0[64];
 
     int x264_build;
 
@@ -448,6 +452,8 @@ typedef struct H264Context {
     int nal_length_size;  ///< Number of bytes used for nal length (1, 2 or 4)
     int got_first;        ///< this flag is != 0 if we've parsed a frame
 
+    int context_reinitialized;
+
     SPS *sps_buffers[MAX_SPS_COUNT];
     PPS *pps_buffers[MAX_PPS_COUNT];
 
@@ -507,7 +513,7 @@ typedef struct H264Context {
     struct H264Context *thread_context[MAX_THREADS];
 
     /**
-     * current slice number, used to initalize slice_num of each thread/context
+     * current slice number, used to initialize slice_num of each thread/context
      */
     int current_slice;
 
@@ -566,6 +572,18 @@ typedef struct H264Context {
      * frames.
      */
     int sei_recovery_frame_cnt;
+    /**
+     * recovery_frame is the frame_num at which the next frame should
+     * be fully constructed.
+     *
+     * Set to -1 when not expecting a recovery point.
+     */
+    int recovery_frame;
+
+    /**
+     * Are the SEI recovery points looking valid.
+     */
+    int valid_recovery_point;
 
     int luma_weight_flag[2];    ///< 7.4.3.2 luma_weight_lX_flag
     int chroma_weight_flag[2];  ///< 7.4.3.2 chroma_weight_lX_flag
@@ -576,9 +594,17 @@ typedef struct H264Context {
 
     int cur_chroma_format_idc;
     uint8_t *bipred_scratchpad;
+
+    int16_t slice_row[MAX_SLICES]; ///< to detect when MAX_SLICES is too low
+
+    int sync;                      ///< did we had a keyframe or recovery point
+
+    uint8_t parse_history[4];
+    int parse_history_count;
+    int parse_last_mb;
 } H264Context;
 
-extern const uint8_t ff_h264_chroma_qp[3][QP_MAX_NUM + 1]; ///< One chroma qp table for each supported bit depth (8, 9, 10).
+extern const uint8_t ff_h264_chroma_qp[7][QP_MAX_NUM + 1]; ///< One chroma qp table for each possible bit depth (8-14).
 extern const uint16_t ff_h264_mb_sizes[4];
 
 /**
@@ -661,7 +687,7 @@ int ff_h264_check_intra_pred_mode(H264Context *h, int mode, int is_chroma);
 
 void ff_h264_hl_decode_mb(H264Context *h);
 int ff_h264_frame_start(H264Context *h);
-int ff_h264_decode_extradata(H264Context *h);
+int ff_h264_decode_extradata(H264Context *h, const uint8_t *buf, int size);
 av_cold int ff_h264_decode_init(AVCodecContext *avctx);
 av_cold void ff_h264_decode_init_vlc(void);