WebM Codec SDK
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Topics | |
WebM VP8/VP9 Encoder | |
WebM VP8/VP9 Decoder | |
Files | |
file | vp8.h |
Provides controls common to both the VP8 encoder and decoder. | |
Data Structures | |
struct | vp8_postproc_cfg |
post process flags More... | |
struct | vpx_ref_frame |
reference frame data struct More... | |
struct | vp9_ref_frame |
VP9 specific reference frame data struct. More... | |
Typedefs | |
typedef struct vp8_postproc_cfg | vp8_postproc_cfg_t |
post process flags | |
typedef enum vpx_ref_frame_type | vpx_ref_frame_type_t |
reference frame type | |
typedef struct vpx_ref_frame | vpx_ref_frame_t |
reference frame data struct | |
typedef struct vp9_ref_frame | vp9_ref_frame_t |
VP9 specific reference frame data struct. | |
Enumerations | |
enum | vp8_com_control_id { VP8_SET_REFERENCE = 1 , VP8_COPY_REFERENCE = 2 , VP8_SET_POSTPROC = 3 , VP9_GET_REFERENCE = 128 , VP8_COMMON_CTRL_ID_MAX , VP8_DECODER_CTRL_ID_START = 256 } |
Control functions. More... | |
enum | vp8_postproc_level { VP8_NOFILTERING = 0 , VP8_DEBLOCK = 1 << 0 , VP8_DEMACROBLOCK = 1 << 1 , VP8_ADDNOISE = 1 << 2 , VP8_MFQE = 1 << 3 } |
post process flags More... | |
enum | vpx_ref_frame_type { VP8_LAST_FRAME = 1 , VP8_GOLD_FRAME = 2 , VP8_ALTR_FRAME = 4 } |
reference frame type More... | |
VP8 is a video compression algorithm that uses motion compensated prediction, Discrete Cosine Transform (DCT) coding of the prediction error signal and context dependent entropy coding techniques based on arithmetic principles. It features:
typedef struct vp8_postproc_cfg vp8_postproc_cfg_t |
post process flags
This define a structure that describe the post processing settings. For the best objective measure (using the PSNR metric) set post_proc_flag to VP8_DEBLOCK and deblocking_level to 1.
typedef enum vpx_ref_frame_type vpx_ref_frame_type_t |
reference frame type
The set of macros define the type of VP8 reference frames
typedef struct vpx_ref_frame vpx_ref_frame_t |
reference frame data struct
Define the data struct to access vp8 reference frames.
typedef struct vp9_ref_frame vp9_ref_frame_t |
VP9 specific reference frame data struct.
Define the data struct to access vp9 reference frames.
enum vp8_com_control_id |
Control functions.
The set of macros define the control functions of VP8 interface
enum vp8_postproc_level |
post process flags
The set of macros define VP8 decoder post processing flags
enum vpx_ref_frame_type |
reference frame type
The set of macros define the type of VP8 reference frames