26 #ifndef AVCODEC_VP56_H
27 #define AVCODEC_VP56_H
73 #define VP56_SIZE_CHANGE 1
78 int offset1,
int offset2, ptrdiff_t
stride,
221 int flip,
int has_alpha);
241 if (
c->end <=
c->buffer &&
c->bits >= 0)
243 return c->end_reached > 10;
250 unsigned int code_word =
c->code_word;
255 if(
bits >= 0 &&
c->buffer <
c->end) {
256 code_word |= bytestream_get_be16(&
c->buffer) <<
bits;
269 #ifndef vp56_rac_get_prob
270 #define vp56_rac_get_prob vp56_rac_get_prob
274 unsigned int low = 1 + (((
c->high - 1) *
prob) >> 8);
275 unsigned int low_shift = low << 16;
276 int bit = code_word >= low_shift;
278 c->high =
bit ?
c->high - low : low;
279 c->code_word =
bit ? code_word - low_shift : code_word;
285 #ifndef vp56_rac_get_prob_branchy
290 unsigned low = 1 + (((
c->high - 1) *
prob) >> 8);
291 unsigned low_shift = low << 16;
293 if (code_word >= low_shift) {
295 c->code_word = code_word - low_shift;
300 c->code_word = code_word;
309 int low = (
c->high + 1) >> 1;
310 unsigned int low_shift = low << 16;
311 int bit = code_word >= low_shift;
314 code_word -= low_shift;
319 c->code_word = code_word;
385 while (tree->
val > 0) {
Libavcodec external API header.
#define bit(string, value)
#define prob(name, subs,...)
bitstream reader API header.
#define DECLARE_ALIGNED(n, t, v)
Declare a variable that is aligned in memory.
static const int8_t mv[256][2]
static void flip(AVCodecContext *avctx, AVFrame *frame)
static const uint16_t mask[17]
typedef void(RENAME(mix_any_func_type))
static int shift(int a, int b)
main external API structure.
This structure describes decoded (raw) audio or video data.
This structure stores compressed data.
uint8_t coeff_runv[2][14]
uint8_t coeff_dcct[2][36][5]
uint8_t coeff_acct[2][3][3][6][5]
uint8_t coeff_index_to_pos[64]
uint8_t mb_types_stats[3][10][2]
uint8_t coeff_dccv[2][11]
uint8_t mb_type[3][10][10]
uint8_t coeff_index_to_idct_selector[64]
uint8_t coeff_reorder[64]
uint8_t coeff_ract[2][3][6][11]
VP56Context * alpha_context
uint8_t idct_scantable[64]
VP56ParseVectorAdjustment parse_vector_adjustment
uint8_t * edge_emu_buffer
VP56Macroblock * macroblocks
H264ChromaContext h264chroma
unsigned int nb_null[2][2]
uint8_t * edge_emu_buffer_alloc
VP56ParseHeader parse_header
int16_t block_coeff[6][64]
VP56ParseCoeff parse_coeff
VP56ParseCoeffModels parse_coeff_models
const uint8_t * vp56_coord_div
VP56DefaultModelsInit default_models_init
VP56mv vector_candidate[2]
VP56ParseVectorModels parse_vector_models
uint8_t coeff_ctx_last[4]
int sample_variance_threshold
int bounding_values_array[256]
Core video DSP helper functions.
int(* VP56ParseHeader)(VP56Context *s, const uint8_t *buf, int buf_size)
int ff_vp56_init_range_decoder(VP56RangeCoder *c, const uint8_t *buf, int buf_size)
static av_always_inline int vp8_rac_get_coeff(VP56RangeCoder *c, const uint8_t *prob)
@ VP56_MB_INTER_V1_PF
Inter MB, first vector, from previous frame.
@ VP56_MB_INTER_DELTA_PF
Inter MB, above/left vector + delta, from previous frame.
@ VP56_MB_INTER_DELTA_GF
Inter MB, above/left vector + delta, from golden frame.
@ VP56_MB_INTER_V2_PF
Inter MB, second vector, from previous frame.
@ VP56_MB_INTER_V2_GF
Inter MB, second vector, from golden frame.
@ VP56_MB_INTER_V1_GF
Inter MB, first vector, from golden frame.
@ VP56_MB_INTER_4V
Inter MB, 4 vectors, from previous frame.
@ VP56_MB_INTER_NOVEC_GF
Inter MB, no vector, from golden frame.
@ VP56_MB_INTER_NOVEC_PF
Inter MB, no vector, from previous frame.
void(* VP56Filter)(VP56Context *s, uint8_t *dst, uint8_t *src, int offset1, int offset2, ptrdiff_t stride, VP56mv mv, int mask, int select, int luma)
void(* VP56DefaultModelsInit)(VP56Context *s)
static av_always_inline unsigned int vp56_rac_renorm(VP56RangeCoder *c)
int ff_vp56_free_context(VP56Context *s)
int ff_vp56_free(AVCodecContext *avctx)
int(* VP56ParseCoeffModels)(VP56Context *s)
static av_always_inline int vp56_rac_get_prob_branchy(VP56RangeCoder *c, int prob)
static av_unused int vp8_rac_get_sint(VP56RangeCoder *c, int bits)
void ff_vp56_init_dequant(VP56Context *s, int quantizer)
const uint8_t ff_vp56_norm_shift[256]
vp56 specific range coder implementation
static av_always_inline int vp8_rac_get_tree(VP56RangeCoder *c, const int8_t(*tree)[2], const uint8_t *probs)
static int vp56_rac_gets(VP56RangeCoder *c, int bits)
int ff_vp56_decode_frame(AVCodecContext *avctx, void *data, int *got_frame, AVPacket *avpkt)
#define vp56_rac_get_prob
static av_always_inline int vp8_rac_get(VP56RangeCoder *c)
int(* VP56ParseCoeff)(VP56Context *s)
static av_always_inline int vpX_rac_is_end(VP56RangeCoder *c)
vp5689 returns 1 if the end of the stream has been reached, 0 otherwise.
int ff_vp56_init(AVCodecContext *avctx, int flip, int has_alpha)
int ff_vp56_init_context(AVCodecContext *avctx, VP56Context *s, int flip, int has_alpha)
void(* VP56ParseVectorModels)(VP56Context *s)
void(* VP56ParseVectorAdjustment)(VP56Context *s, VP56mv *vect)
static av_unused int vp56_rac_gets_nn(VP56RangeCoder *c, int bits)
static av_always_inline int vp56_rac_get(VP56RangeCoder *c)
static av_always_inline int vp56_rac_get_tree(VP56RangeCoder *c, const VP56Tree *tree, const uint8_t *probs)
static av_unused int vp8_rac_get_nn(VP56RangeCoder *c)
static int vp8_rac_get_uint(VP56RangeCoder *c, int bits)