270 строки
8.6 KiB
C
270 строки
8.6 KiB
C
/*
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* Copyright (c) 2010 The WebM project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#ifndef __INC_VP8_H
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#define __INC_VP8_H
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#ifdef __cplusplus
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extern "C"
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{
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#endif
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#include "vpx_config.h"
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#include "vpx/internal/vpx_codec_internal.h"
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#include "vpx/vp8cx.h"
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#include "vpx/vpx_encoder.h"
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#include "vpx_scale/yv12config.h"
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#include "ppflags.h"
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struct VP8_COMP;
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/* Create/destroy static data structures. */
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typedef enum
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{
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NORMAL = 0,
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FOURFIVE = 1,
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THREEFIVE = 2,
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ONETWO = 3
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} VPX_SCALING;
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typedef enum
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{
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USAGE_STREAM_FROM_SERVER = 0x0,
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USAGE_LOCAL_FILE_PLAYBACK = 0x1,
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USAGE_CONSTRAINED_QUALITY = 0x2
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} END_USAGE;
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typedef enum
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{
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MODE_REALTIME = 0x0,
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MODE_GOODQUALITY = 0x1,
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MODE_BESTQUALITY = 0x2,
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MODE_FIRSTPASS = 0x3,
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MODE_SECONDPASS = 0x4,
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MODE_SECONDPASS_BEST = 0x5
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} MODE;
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typedef enum
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{
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FRAMEFLAGS_KEY = 1,
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FRAMEFLAGS_GOLDEN = 2,
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FRAMEFLAGS_ALTREF = 4
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} FRAMETYPE_FLAGS;
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#include <assert.h>
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static void Scale2Ratio(int mode, int *hr, int *hs)
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{
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switch (mode)
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{
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case NORMAL:
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*hr = 1;
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*hs = 1;
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break;
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case FOURFIVE:
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*hr = 4;
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*hs = 5;
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break;
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case THREEFIVE:
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*hr = 3;
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*hs = 5;
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break;
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case ONETWO:
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*hr = 1;
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*hs = 2;
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break;
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default:
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*hr = 1;
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*hs = 1;
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assert(0);
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break;
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}
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}
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typedef struct
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{
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/* 4 versions of bitstream defined:
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* 0 best quality/slowest decode, 3 lowest quality/fastest decode
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*/
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int Version;
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int Width;
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int Height;
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struct vpx_rational timebase;
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unsigned int target_bandwidth; /* kilobits per second */
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/* parameter used for applying pre processing blur: recommendation 0 */
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int noise_sensitivity;
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/* parameter used for sharpening output: recommendation 0: */
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int Sharpness;
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int cpu_used;
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unsigned int rc_max_intra_bitrate_pct;
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/* mode ->
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*(0)=Realtime/Live Encoding. This mode is optimized for realtim
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* encoding (for example, capturing a television signal or feed
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* from a live camera). ( speed setting controls how fast )
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*(1)=Good Quality Fast Encoding. The encoder balances quality with
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* the amount of time it takes to encode the output. ( speed
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* setting controls how fast )
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*(2)=One Pass - Best Quality. The encoder places priority on the
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* quality of the output over encoding speed. The output is
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* compressed at the highest possible quality. This option takes
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* the longest amount of time to encode. ( speed setting ignored
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* )
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*(3)=Two Pass - First Pass. The encoder generates a file of
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* statistics for use in the second encoding pass. ( speed
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* setting controls how fast )
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*(4)=Two Pass - Second Pass. The encoder uses the statistics that
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* were generated in the first encoding pass to create the
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* compressed output. ( speed setting controls how fast )
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*(5)=Two Pass - Second Pass Best. The encoder uses the statistics
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* that were generated in the first encoding pass to create the
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* compressed output using the highest possible quality, and
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* taking a longer amount of time to encode.. ( speed setting
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* ignored )
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*/
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int Mode;
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/* Key Framing Operations */
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int auto_key; /* automatically detect cut scenes */
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int key_freq; /* maximum distance to key frame. */
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/* lagged compression (if allow_lag == 0 lag_in_frames is ignored) */
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int allow_lag;
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int lag_in_frames; /* how many frames lag before we start encoding */
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/*
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* DATARATE CONTROL OPTIONS
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*/
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int end_usage; /* vbr or cbr */
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/* buffer targeting aggressiveness */
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int under_shoot_pct;
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int over_shoot_pct;
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/* buffering parameters */
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int64_t starting_buffer_level;
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int64_t optimal_buffer_level;
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int64_t maximum_buffer_size;
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int64_t starting_buffer_level_in_ms;
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int64_t optimal_buffer_level_in_ms;
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int64_t maximum_buffer_size_in_ms;
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/* controlling quality */
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int fixed_q;
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int worst_allowed_q;
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int best_allowed_q;
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int cq_level;
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/* allow internal resizing */
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int allow_spatial_resampling;
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int resample_down_water_mark;
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int resample_up_water_mark;
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/* allow internal frame rate alterations */
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int allow_df;
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int drop_frames_water_mark;
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/* two pass datarate control */
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int two_pass_vbrbias;
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int two_pass_vbrmin_section;
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int two_pass_vbrmax_section;
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/*
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* END DATARATE CONTROL OPTIONS
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*/
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/* these parameters aren't to be used in final build don't use!!! */
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int play_alternate;
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int alt_freq;
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int alt_q;
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int key_q;
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int gold_q;
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int multi_threaded; /* how many threads to run the encoder on */
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int token_partitions; /* how many token partitions to create */
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/* early breakout threshold: for video conf recommend 800 */
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int encode_breakout;
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/* Bitfield defining the error resiliency features to enable.
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* Can provide decodable frames after losses in previous
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* frames and decodable partitions after losses in the same frame.
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*/
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unsigned int error_resilient_mode;
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int arnr_max_frames;
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int arnr_strength;
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int arnr_type;
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struct vpx_fixed_buf two_pass_stats_in;
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struct vpx_codec_pkt_list *output_pkt_list;
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vp8e_tuning tuning;
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/* Temporal scaling parameters */
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unsigned int number_of_layers;
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unsigned int target_bitrate[VPX_TS_MAX_PERIODICITY];
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unsigned int rate_decimator[VPX_TS_MAX_PERIODICITY];
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unsigned int periodicity;
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unsigned int layer_id[VPX_TS_MAX_PERIODICITY];
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#if CONFIG_MULTI_RES_ENCODING
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/* Number of total resolutions encoded */
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unsigned int mr_total_resolutions;
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/* Current encoder ID */
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unsigned int mr_encoder_id;
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/* Down-sampling factor */
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vpx_rational_t mr_down_sampling_factor;
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/* Memory location to store low-resolution encoder's mode info */
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void* mr_low_res_mode_info;
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#endif
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} VP8_CONFIG;
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void vp8_initialize();
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struct VP8_COMP* vp8_create_compressor(VP8_CONFIG *oxcf);
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void vp8_remove_compressor(struct VP8_COMP* *comp);
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void vp8_init_config(struct VP8_COMP* onyx, VP8_CONFIG *oxcf);
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void vp8_change_config(struct VP8_COMP* onyx, VP8_CONFIG *oxcf);
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int vp8_receive_raw_frame(struct VP8_COMP* comp, unsigned int frame_flags, YV12_BUFFER_CONFIG *sd, int64_t time_stamp, int64_t end_time_stamp);
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int vp8_get_compressed_data(struct VP8_COMP* comp, unsigned int *frame_flags, unsigned long *size, unsigned char *dest, unsigned char *dest_end, int64_t *time_stamp, int64_t *time_end, int flush);
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int vp8_get_preview_raw_frame(struct VP8_COMP* comp, YV12_BUFFER_CONFIG *dest, vp8_ppflags_t *flags);
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int vp8_use_as_reference(struct VP8_COMP* comp, int ref_frame_flags);
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int vp8_update_reference(struct VP8_COMP* comp, int ref_frame_flags);
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int vp8_get_reference(struct VP8_COMP* comp, enum vpx_ref_frame_type ref_frame_flag, YV12_BUFFER_CONFIG *sd);
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int vp8_set_reference(struct VP8_COMP* comp, enum vpx_ref_frame_type ref_frame_flag, YV12_BUFFER_CONFIG *sd);
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int vp8_update_entropy(struct VP8_COMP* comp, int update);
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int vp8_set_roimap(struct VP8_COMP* comp, unsigned char *map, unsigned int rows, unsigned int cols, int delta_q[4], int delta_lf[4], unsigned int threshold[4]);
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int vp8_set_active_map(struct VP8_COMP* comp, unsigned char *map, unsigned int rows, unsigned int cols);
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int vp8_set_internal_size(struct VP8_COMP* comp, VPX_SCALING horiz_mode, VPX_SCALING vert_mode);
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int vp8_get_quantizer(struct VP8_COMP* c);
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#ifdef __cplusplus
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}
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#endif
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#endif
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