* 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
*/
#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
#define CABAC(h) h->pps.cabac
#endif
+#define CHROMA (h->sps.chroma_format_idc)
#define CHROMA422(h) (h->sps.chroma_format_idc == 2)
#define CHROMA444(h) (h->sps.chroma_format_idc == 3)
#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 {
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;
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;
*/
typedef struct H264Context {
AVCodecContext *avctx;
- DSPContext dsp;
VideoDSPContext vdsp;
H264DSPContext h264dsp;
H264ChromaContext h264chroma;
MotionEstContext me;
ParseContext parse_context;
GetBitContext gb;
+ DSPContext dsp;
ERContext er;
Picture *DPB;
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;
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;
enum AVPictureType pict_type;
int last_slice_type;
+ unsigned int last_ref_count[2];
/** @} */
/**
* 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
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;
uint8_t *edge_emu_buffer;
int16_t *dc_val_base;
+ uint8_t *visualization_buffer[3]; ///< temporary buffer vor MV visualization
+
AVBufferPool *qscale_table_pool;
AVBufferPool *mb_type_pool;
AVBufferPool *motion_val_pool;
AVBufferPool *ref_index_pool;
} 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];
/**
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_decode_extradata(H264Context *h);
+int ff_h264_decode_extradata(H264Context *h, const uint8_t *buf, int size);
int ff_h264_decode_init(AVCodecContext *avctx);
void ff_h264_decode_init_vlc(void);
projects / ffmpeg / blobdiff