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ffmpeg/libavcodec/avcodec.h
Joel Yliluoma a32072d0e9 16-bit and 15-bit rgb/bgr patch by (Joel Yliluoma <joel dot yliluoma at w-create dot com>) (note, rare formats disabled) 
Originally committed as revision 1212 to svn://svn.ffmpeg.org/ffmpeg/trunk
2002-11-14 19:46:14 +00:00

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#ifndef AVCODEC_H
#define AVCODEC_H
#include "common.h"
#define LIBAVCODEC_VERSION_INT 0x000406
#define LIBAVCODEC_VERSION "0.4.6"
#define LIBAVCODEC_BUILD 4639
#define LIBAVCODEC_BUILD_STR "4639"
enum CodecID {
CODEC_ID_NONE,
CODEC_ID_MPEG1VIDEO,
CODEC_ID_H263,
CODEC_ID_RV10,
CODEC_ID_MP2,
CODEC_ID_MP3LAME,
CODEC_ID_VORBIS,
CODEC_ID_AC3,
CODEC_ID_MJPEG,
CODEC_ID_MPEG4,
CODEC_ID_RAWVIDEO,
CODEC_ID_MSMPEG4V1,
CODEC_ID_MSMPEG4V2,
CODEC_ID_MSMPEG4V3,
CODEC_ID_WMV1,
CODEC_ID_WMV2,
CODEC_ID_H263P,
CODEC_ID_H263I,
CODEC_ID_SVQ1,
CODEC_ID_DVVIDEO,
CODEC_ID_DVAUDIO,
CODEC_ID_WMAV1,
CODEC_ID_WMAV2,
CODEC_ID_MACE3,
CODEC_ID_MACE6,
CODEC_ID_HUFFYUV,
/* various pcm "codecs" */
CODEC_ID_PCM_S16LE,
CODEC_ID_PCM_S16BE,
CODEC_ID_PCM_U16LE,
CODEC_ID_PCM_U16BE,
CODEC_ID_PCM_S8,
CODEC_ID_PCM_U8,
CODEC_ID_PCM_MULAW,
CODEC_ID_PCM_ALAW,
/* various adpcm codecs */
CODEC_ID_ADPCM_IMA_QT,
CODEC_ID_ADPCM_IMA_WAV,
CODEC_ID_ADPCM_MS,
};
enum CodecType {
CODEC_TYPE_UNKNOWN = -1,
CODEC_TYPE_VIDEO,
CODEC_TYPE_AUDIO,
};
enum PixelFormat {
PIX_FMT_ANY = -1,
PIX_FMT_YUV420P,
PIX_FMT_YUV422,
PIX_FMT_RGB24,
PIX_FMT_BGR24,
PIX_FMT_YUV422P,
PIX_FMT_YUV444P,
PIX_FMT_RGBA32,
PIX_FMT_BGRA32,
PIX_FMT_YUV410P,
PIX_FMT_YUV411P,
PIX_FMT_RGB565,
PIX_FMT_RGB555,
// PIX_FMT_RGB5551,
PIX_FMT_BGR565,
PIX_FMT_BGR555,
// PIX_FMT_GBR565,
// PIX_FMT_GBR555
};
/* currently unused, may be used if 24/32 bits samples ever supported */
enum SampleFormat {
SAMPLE_FMT_S16 = 0, /* signed 16 bits */
};
/* in bytes */
#define AVCODEC_MAX_AUDIO_FRAME_SIZE 131072
/**
* Required number of zero bytes at the end of the input bitstream for decoding.
* to avoid overreading (and possibly segfaulting)
*/
#define FF_INPUT_BUFFER_PADDING_SIZE 8
/* motion estimation type, EPZS by default */
enum Motion_Est_ID {
ME_ZERO = 1,
ME_FULL,
ME_LOG,
ME_PHODS,
ME_EPZS,
ME_X1
};
typedef struct RcOverride{
int start_frame;
int end_frame;
int qscale; // if this is 0 then quality_factor will be used instead
float quality_factor;
} RcOverride;
/* only for ME compatiblity with old apps */
extern int motion_estimation_method;
/* ME algos sorted by quality */
static const int Motion_Est_QTab[] = { ME_ZERO, ME_PHODS, ME_LOG,
ME_X1, ME_EPZS, ME_FULL };
#define FF_MAX_B_FRAMES 4
/* encoding support
these flags can be passed in AVCodecContext.flags before initing
Note: note not everything is supported yet
*/
#define CODEC_FLAG_HQ 0x0001 /* brute force MB-type decission mode (slow) */
#define CODEC_FLAG_QSCALE 0x0002 /* use fixed qscale */
#define CODEC_FLAG_4MV 0x0004 /* 4 MV per MB allowed */
#define CODEC_FLAG_QPEL 0x0010 /* use qpel MC */
#define CODEC_FLAG_GMC 0x0020 /* use GMC */
#define CODEC_FLAG_PART 0x0080 /* use data partitioning */
/* parent program gurantees that the input for b-frame containing streams is not written to
for at least s->max_b_frames+1 frames, if this is not set than the input will be copied */
#define CODEC_FLAG_INPUT_PRESERVED 0x0100
#define CODEC_FLAG_PASS1 0x0200 /* use internal 2pass ratecontrol in first pass mode */
#define CODEC_FLAG_PASS2 0x0400 /* use internal 2pass ratecontrol in second pass mode */
#define CODEC_FLAG_EXTERN_HUFF 0x1000 /* use external huffman table (for mjpeg) */
#define CODEC_FLAG_GRAY 0x2000 /* only decode/encode grayscale */
#define CODEC_FLAG_EMU_EDGE 0x4000/* dont draw edges */
#define CODEC_FLAG_DR1 0x8000 /* direct renderig type 1 (store internal frames in external buffers) */
#define CODEC_FLAG_TRUNCATED 0x00010000 /* input bitstream might be truncated at a random location instead
of only at frame boundaries */
#define CODEC_FLAG_NORMALIZE_AQP 0x00020000 /* normalize adaptive quantization */
#define CODEC_FLAG_INTERLACED_DCT 0x00040000 /* use interlaced dct */
#define CODEC_FLAG_LOW_DELAY 0x00080000 /* force low delay / will fail on b frames */
/* codec capabilities */
#define CODEC_CAP_DRAW_HORIZ_BAND 0x0001 /* decoder can use draw_horiz_band callback */
#define CODEC_CAP_DR1 0x0002 /* direct rendering method 1 */
/* if 'parse_only' field is true, then avcodec_parse_frame() can be
used */
#define CODEC_CAP_PARSE_ONLY 0x0004
#define CODEC_CAP_TRUNCATED 0x0008
#define FRAME_RATE_BASE 10000
typedef struct AVCodecContext {
/**
* the average bitrate
* encoding: set by user. unused for constant quantizer encoding
* decoding: set by lavc. 0 or some bitrate if this info is available in the stream
*/
int bit_rate;
/**
* number of bits the bitstream is allowed to diverge from the reference
* the reference can be CBR (for CBR pass1) or VBR (for pass2)
* encoding: set by user. unused for constant quantizer encoding
* decoding: unused
*/
int bit_rate_tolerance;
/**
* CODEC_FLAG_*
* encoding: set by user.
* decoding: set by user.
*/
int flags;
/**
* some codecs needs additionnal format info. It is stored here
* encoding: set by user.
* decoding: set by lavc. (FIXME is this ok?)
*/
int sub_id;
/**
* motion estimation algorithm used for video coding
* encoding: set by user.
* decoding: unused
*/
int me_method;
/**
* some codecs need / can use extra-data like huffman tables
* mjpeg: huffman tables
* rv10: additional flags
* mpeg4: global headers (they can be in the bitstream or here)
* encoding: set/allocated/freed by lavc.
* decoding: set/allocated/freed by user.
*/
void *extradata;
int extradata_size;
/* video only */
/**
* frames per sec multiplied by FRAME_RATE_BASE
* for variable fps this is the precission, so if the timestamps
* can be specified in msec precssion then this is 1000*FRAME_RATE_BASE
* encoding: set by user
* decoding: set by lavc. 0 or the frame_rate if available
*/
int frame_rate;
/**
* encoding: set by user.
* decoding: set by user, some codecs might override / change it during playback
*/
int width, height;
/**
* encoding: set by user. 0 if not known
* decoding: set by lavc. 0 if not known
*/
int aspect_ratio_info;
#define FF_ASPECT_SQUARE 1
#define FF_ASPECT_4_3_625 2
#define FF_ASPECT_4_3_525 3
#define FF_ASPECT_16_9_625 4
#define FF_ASPECT_16_9_525 5
#define FF_ASPECT_EXTENDED 15
/**
* the number of pictures in a group of pitures, or 0 for intra_only
* encoding: set by user.
* decoding: unused
*/
int gop_size;
/**
* pixel format, see PIX_FMT_xxx
* encoding: unused
* decoding: set by lavc.
*/
enum PixelFormat pix_fmt;
int repeat_pict; /* when decoding, this signal how much the picture */
/* must be delayed. */
/* extra_delay = (repeat_pict / 2) * (1/fps) */
/**
* if non NULL, 'draw_horiz_band' is called by the libavcodec
* decoder to draw an horizontal band. It improve cache usage. Not
* all codecs can do that. You must check the codec capabilities
* before
* encoding: unused
* decoding: set by user.
*/
void (*draw_horiz_band)(struct AVCodecContext *s,
UINT8 **src_ptr, int linesize,
int y, int width, int height);
/* audio only */
int sample_rate; /* samples per sec */
int channels;
int sample_fmt; /* sample format, currenly unused */
/* the following data should not be initialized */
int frame_size; /* in samples, initialized when calling 'init' */
int frame_number; /* audio or video frame number */
int real_pict_num; /* returns the real picture number of
previous encoded frame */
/**
* 1 -> keyframe, 0-> not
* encoding: set by lavc (for the outputed bitstream, not the input frame)
* decoding: set by lavc (for the decoded bitstream, not the displayed frame)
*/
int key_frame;
/**
* picture type of the previous en/decoded frame, see ?_TYPE below
* encoding: set by lavc (for the outputed bitstream, not the input frame)
* decoding: set by lavc (for the decoded bitstream, not the displayed frame)
*/
int pict_type;
/* FIXME: these should have FF_ */
#define I_TYPE 1 // Intra
#define P_TYPE 2 // Predicted
#define B_TYPE 3 // Bi-dir predicted
#define S_TYPE 4 // S(GMC)-VOP MPEG4
/**
* number of frames the decoded output will be delayed relative to
* the encoded input
* encoding: set by lavc.
* decoding: unused
*/
int delay;
/**
* mbskip_table[mb]=1 if MB didnt change, is only valid for I/P frames
* stride= mb_width = (width+15)>>4 (FIXME export stride?)
* encoding: unused
* decoding: set by lavc
*/
uint8_t *mbskip_table;
/* encoding parameters */
/**
* quality (between 1 (good) and 31 (bad))
* encoding: set by user if CODEC_FLAG_QSCALE is set otherwise set by lavc
* decoding: set by lavc
*/
int quality; /* quality of the previous encoded frame
this is allso used to set the quality in vbr mode
and the per frame quality in CODEC_FLAG_TYPE (second pass mode) */
float qcompress; /* amount of qscale change between easy & hard scenes (0.0-1.0)*/
float qblur; /* amount of qscale smoothing over time (0.0-1.0) */
/**
* minimum quantizer
* encoding: set by user.
* decoding: unused
*/
int qmin;
/**
* maximum quantizer
* encoding: set by user.
* decoding: unused
*/
int qmax;
/**
* maximum quantizer difference etween frames
* encoding: set by user.
* decoding: unused
*/
int max_qdiff;
/**
* maximum number of b frames between non b frames
* note: the output will be delayed by max_b_frames+1 relative to the input
* encoding: set by user.
* decoding: unused
*/
int max_b_frames;
/**
* qscale factor between ip and b frames
* encoding: set by user.
* decoding: unused
*/
float b_quant_factor;
/** obsolete FIXME remove */
int rc_strategy;
int b_frame_strategy;
/**
* encoding: unused
* decoding: set by user. 1-> skip b frames, 2-> skip idct/dequant too, 5-> skip everything except header
*/
int hurry_up;
struct AVCodec *codec;
void *priv_data;
/* The following data is for RTP friendly coding */
/* By now only H.263/H.263+/MPEG4 coder honours this */
int rtp_mode; /* 1 for activate RTP friendly-mode */
/* highers numbers represent more error-prone */
/* enviroments, by now just "1" exist */
int rtp_payload_size; /* The size of the RTP payload, the coder will */
/* do it's best to deliver a chunk with size */
/* below rtp_payload_size, the chunk will start */
/* with a start code on some codecs like H.263 */
/* This doesn't take account of any particular */
/* headers inside the transmited RTP payload */
/* The RTP callcack: This function is called */
/* every time the encoder as a packet to send */
/* Depends on the encoder if the data starts */
/* with a Start Code (it should) H.263 does */
void (*rtp_callback)(void *data, int size, int packet_number);
/**
* if you set get_psnr to 1 then after encoding you will have the
* PSNR on psnr_y/cb/cr
* encoding: set by user (1-> on, 0-> off)
* decoding: unused
*/
int get_psnr;
float psnr_y;
float psnr_cb;
float psnr_cr;
/* statistics, used for 2-pass encoding */
int mv_bits;
int header_bits;
int i_tex_bits;
int p_tex_bits;
int i_count;
int p_count;
int skip_count;
int misc_bits;
/**
* number of bits used for the previously encoded frame
* encoding: set by lavc
* decoding: - for audio - bits_per_sample
*/
int frame_bits;
/**
* private data of the user, can be used to carry app specific stuff
* encoding: set by user
* decoding: set by user
*/
void *opaque;
char codec_name[32];
enum CodecType codec_type; /* see CODEC_TYPE_xxx */
enum CodecID codec_id; /* see CODEC_ID_xxx */
unsigned int codec_tag; /* codec tag, only used if unknown codec */
/**
* workaround bugs in encoders which sometimes cannot be detected automatically
* encoding: unused
* decoding: set by user
*/
int workaround_bugs;
#define FF_BUG_AUTODETECT 1 //autodetection
#define FF_BUG_OLD_MSMPEG4 2
#define FF_BUG_XVID_ILACE 4
#define FF_BUG_UMP4 8
#define FF_BUG_NO_PADDING 16
#define FF_BUG_AC_VLC 32
#define FF_BUG_QPEL_CHROMA 64
//#define FF_BUG_FAKE_SCALABILITY 16 //autodetection should work 100%
/**
* encoding: set by user
* decoding: unused
*/
int luma_elim_threshold;
/**
* encoding: set by user
* decoding: unused
*/
int chroma_elim_threshold;
/**
* strictly follow the std (MPEG4, ...)
* encoding: set by user
* decoding: unused
*/
int strict_std_compliance;
/**
* qscale offset between ip and b frames
* if > 0 then the last p frame quantizer will be used (q= lastp_q*factor+offset)
* if < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset)
* encoding: set by user.
* decoding: unused
*/
float b_quant_offset;
/**
* error resilience {-1,0,1} higher values will detect more errors but may missdetect
* some more or less valid parts as errors
* encoding: unused
* decoding: set by user
*/
int error_resilience;
/**
* obsolete, just here to keep ABI compatible (should be removed perhaps, dunno)
*/
int *quant_store;
/**
* QP store stride
* encoding: unused
* decoding: set by lavc
*/
int qstride;
/**
* buffer, where the next picture should be decoded into
* encoding: unused
* decoding: set by user in get_buffer_callback to a buffer into which the next part
* of the bitstream will be decoded, and set by lavc at end of frame to the
* next frame which needs to be displayed
*/
uint8_t *dr_buffer[3];
/**
* stride of the luminance part of the dr buffer
* encoding: unused
* decoding: set by user
*/
int dr_stride;
/**
* same behavior as dr_buffer, just for some private data of the user
* encoding: unused
* decoding: set by user in get_buffer_callback, and set by lavc at end of frame
*/
void *dr_opaque_frame;
/**
* called at the beginning of each frame to get a buffer for it
* encoding: unused
* decoding: set by user
*/
int (*get_buffer_callback)(struct AVCodecContext *c, int width, int height, int pict_type);
/**
* is 1 if the decoded stream contains b frames, 0 otherwise
* encoding: unused
* decoding: set by lavc
*/
int has_b_frames;
/**
* stride of the chrominance part of the dr buffer
* encoding: unused
* decoding: set by user
*/
int dr_uvstride;
/**
* number of dr buffers
* encoding: unused
* decoding: set by user
*/
int dr_ip_buffer_count;
int block_align; /* used by some WAV based audio codecs */
int parse_only; /* decoding only: if true, only parsing is done
(function avcodec_parse_frame()). The frame
data is returned. Only MPEG codecs support this now. */
/**
* 0-> h263 quant 1-> mpeg quant
* encoding: set by user.
* decoding: unused
*/
int mpeg_quant;
/**
* pass1 encoding statistics output buffer
* encoding: set by lavc
* decoding: unused
*/
char *stats_out; /* encoding statistics output buffer */
/**
* pass2 encoding statistics input buffer.
* concatenated stuff from stats_out of pass1 should be placed here
* encoding: allocated/set/freed by user
* decoding: unused
*/
char *stats_in;
/**
* ratecontrol qmin qmax limiting method
* 0-> clipping, 1-> use a nice continous function to limit qscale wthin qmin/qmax
* encoding: set by user.
* decoding: unused
*/
float rc_qsquish;
float rc_qmod_amp;
int rc_qmod_freq;
/**
* ratecontrol override, see RcOverride
* encoding: allocated/set/freed by user.
* decoding: unused
*/
RcOverride *rc_override;
int rc_override_count;
/**
* rate control equation
* encoding: set by user
* decoding: unused
*/
char *rc_eq;
/**
* maximum bitrate
* encoding: set by user.
* decoding: unused
*/
int rc_max_rate;
/**
* minimum bitrate
* encoding: set by user.
* decoding: unused
*/
int rc_min_rate;
/**
* decoder bitstream buffer size
* encoding: set by user.
* decoding: unused
*/
int rc_buffer_size;
float rc_buffer_aggressivity;
/**
* qscale factor between p and i frames
* encoding: set by user.
* decoding: unused
*/
float i_quant_factor;
/**
* qscale offset between p and i frames
* if > 0 then the last p frame quantizer will be used (q= lastp_q*factor+offset)
* if < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset)
* encoding: set by user.
* decoding: unused
*/
float i_quant_offset;
/**
* initial complexity for pass1 ratecontrol
* encoding: set by user.
* decoding: unused
*/
float rc_initial_cplx;
/**
* custom aspect ratio, used if aspect_info==FF_ASPECT_EXTENDED
* encoding: set by user.
* decoding: set by lavc.
*/
int aspected_width;
int aspected_height;
/**
* dct algorithm, see FF_DCT_* below
* encoding: set by user
* decoding: unused
*/
int dct_algo;
#define FF_DCT_AUTO 0
#define FF_DCT_FASTINT 1
#define FF_DCT_INT 2
#define FF_DCT_MMX 3
#define FF_DCT_MLIB 4
#define FF_DCT_ALTIVEC 5
/**
* presentation timestamp in micro seconds (time when frame should be shown to user)
* if 0 then the frame_rate will be used as reference
* encoding: set by user
* decoding; set by lavc
*/
long long int pts;
/**
* luminance masking (0-> disabled)
* encoding: set by user
* decoding: unused
*/
float lumi_masking;
/**
* temporary complexity masking (0-> disabled)
* encoding: set by user
* decoding: unused
*/
float temporal_cplx_masking;
/**
* spatial complexity masking (0-> disabled)
* encoding: set by user
* decoding: unused
*/
float spatial_cplx_masking;
/**
* p block masking (0-> disabled)
* encoding: set by user
* decoding: unused
*/
float p_masking;
/**
* darkness masking (0-> disabled)
* encoding: set by user
* decoding: unused
*/
float dark_masking;
/**
* fourcc (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A')
* this is used to workaround some encoder bugs
* encoding: unused
* decoding: set by user, will be converted to upper case by lavc during init
*/
int fourcc;
/**
* idct algorithm, see FF_IDCT_* below
* encoding: set by user
* decoding: set by user
*/
int idct_algo;
#define FF_IDCT_AUTO 0
#define FF_IDCT_INT 1
#define FF_IDCT_SIMPLE 2
#define FF_IDCT_SIMPLEMMX 3
#define FF_IDCT_LIBMPEG2MMX 4
#define FF_IDCT_PS2 5
#define FF_IDCT_MLIB 6
#define FF_IDCT_ARM 7
#define FF_IDCT_ALTIVEC 8
/**
* slice count
* encoding: set by lavc
* decoding: set by user (or 0)
*/
int slice_count;
/**
* slice offsets in the frame in bytes
* encoding: set/allocated by lavc
* decoding: set/allocated by user (or NULL)
*/
int *slice_offset;
/**
* error concealment flags
* encoding: unused
* decoding: set by user
*/
int error_concealment;
#define FF_EC_GUESS_MVS 1
#define FF_EC_DEBLOCK 2
/**
* QP table of the currently decoded frame
* encoding; unused
* decoding: set by lavc
*/
int8_t *current_qscale_table;
/**
* QP table of the currently displayed frame
* encoding; unused
* decoding: set by lavc
*/
int8_t *display_qscale_table;
/**
* force specific pict_type.
* encoding; set by user (I/P/B_TYPE)
* decoding: unused
*/
int force_type;
/**
* dsp_mask could be used to disable unwanted
* CPU features (i.e. MMX, SSE. ...)
*/
unsigned dsp_mask;
/**
* bits per sample/pixel from the demuxer (needed for huffyuv)
* encoding; set by lavc
* decoding: set by user
*/
int bits_per_sample;
/**
* prediction method (needed for huffyuv)
* encoding; set by user
* decoding: unused
*/
int prediction_method;
#define FF_PRED_LEFT 0
#define FF_PRED_PLANE 1
#define FF_PRED_MEDIAN 2
} AVCodecContext;
typedef struct AVCodec {
const char *name;
int type;
int id;
int priv_data_size;
int (*init)(AVCodecContext *);
int (*encode)(AVCodecContext *, UINT8 *buf, int buf_size, void *data);
int (*close)(AVCodecContext *);
int (*decode)(AVCodecContext *, void *outdata, int *outdata_size,
UINT8 *buf, int buf_size);
int capabilities;
struct AVCodec *next;
} AVCodec;
/**
* four components are given, that's all.
* the last component is alpha
*/
typedef struct AVPicture {
UINT8 *data[4];
int linesize[4];
} AVPicture;
extern AVCodec ac3_encoder;
extern AVCodec mp2_encoder;
extern AVCodec mp3lame_encoder;
extern AVCodec oggvorbis_encoder;
extern AVCodec mpeg1video_encoder;
extern AVCodec h263_encoder;
extern AVCodec h263p_encoder;
extern AVCodec rv10_encoder;
extern AVCodec mjpeg_encoder;
extern AVCodec mpeg4_encoder;
extern AVCodec msmpeg4v1_encoder;
extern AVCodec msmpeg4v2_encoder;
extern AVCodec msmpeg4v3_encoder;
extern AVCodec wmv1_encoder;
extern AVCodec wmv2_encoder;
extern AVCodec huffyuv_encoder;
extern AVCodec h263_decoder;
extern AVCodec mpeg4_decoder;
extern AVCodec msmpeg4v1_decoder;
extern AVCodec msmpeg4v2_decoder;
extern AVCodec msmpeg4v3_decoder;
extern AVCodec wmv1_decoder;
extern AVCodec wmv2_decoder;
extern AVCodec mpeg_decoder;
extern AVCodec h263i_decoder;
extern AVCodec rv10_decoder;
extern AVCodec svq1_decoder;
extern AVCodec dvvideo_decoder;
extern AVCodec dvaudio_decoder;
extern AVCodec wmav1_decoder;
extern AVCodec wmav2_decoder;
extern AVCodec mjpeg_decoder;
extern AVCodec mp2_decoder;
extern AVCodec mp3_decoder;
extern AVCodec mace3_decoder;
extern AVCodec mace6_decoder;
extern AVCodec huffyuv_decoder;
/* pcm codecs */
#define PCM_CODEC(id, name) \
extern AVCodec name ## _decoder; \
extern AVCodec name ## _encoder
PCM_CODEC(CODEC_ID_PCM_S16LE, pcm_s16le);
PCM_CODEC(CODEC_ID_PCM_S16BE, pcm_s16be);
PCM_CODEC(CODEC_ID_PCM_U16LE, pcm_u16le);
PCM_CODEC(CODEC_ID_PCM_U16BE, pcm_u16be);
PCM_CODEC(CODEC_ID_PCM_S8, pcm_s8);
PCM_CODEC(CODEC_ID_PCM_U8, pcm_u8);
PCM_CODEC(CODEC_ID_PCM_ALAW, pcm_alaw);
PCM_CODEC(CODEC_ID_PCM_MULAW, pcm_mulaw);
/* adpcm codecs */
PCM_CODEC(CODEC_ID_ADPCM_IMA_QT, adpcm_ima_qt);
PCM_CODEC(CODEC_ID_ADPCM_IMA_WAV, adpcm_ima_wav);
PCM_CODEC(CODEC_ID_ADPCM_MS, adpcm_ms);
#undef PCM_CODEC
/* dummy raw video codec */
extern AVCodec rawvideo_codec;
/* the following codecs use external GPL libs */
extern AVCodec ac3_decoder;
/* resample.c */
struct ReSampleContext;
typedef struct ReSampleContext ReSampleContext;
ReSampleContext *audio_resample_init(int output_channels, int input_channels,
int output_rate, int input_rate);
int audio_resample(ReSampleContext *s, short *output, short *input, int nb_samples);
void audio_resample_close(ReSampleContext *s);
/* YUV420 format is assumed ! */
struct ImgReSampleContext;
typedef struct ImgReSampleContext ImgReSampleContext;
ImgReSampleContext *img_resample_init(int output_width, int output_height,
int input_width, int input_height);
ImgReSampleContext *img_resample_full_init(int owidth, int oheight,
int iwidth, int iheight,
int topBand, int bottomBand,
int leftBand, int rightBand);
void img_resample(ImgReSampleContext *s,
AVPicture *output, AVPicture *input);
void img_resample_close(ImgReSampleContext *s);
void avpicture_fill(AVPicture *picture, UINT8 *ptr,
int pix_fmt, int width, int height);
int avpicture_get_size(int pix_fmt, int width, int height);
/* convert among pixel formats */
int img_convert(AVPicture *dst, int dst_pix_fmt,
AVPicture *src, int pix_fmt,
int width, int height);
/* deinterlace a picture */
int avpicture_deinterlace(AVPicture *dst, AVPicture *src,
int pix_fmt, int width, int height);
/* external high level API */
extern AVCodec *first_avcodec;
/* returns LIBAVCODEC_VERSION_INT constant */
unsigned avcodec_version(void);
/* returns LIBAVCODEC_BUILD constant */
unsigned avcodec_build(void);
void avcodec_init(void);
void avcodec_set_bit_exact(void);
void register_avcodec(AVCodec *format);
AVCodec *avcodec_find_encoder(enum CodecID id);
AVCodec *avcodec_find_encoder_by_name(const char *name);
AVCodec *avcodec_find_decoder(enum CodecID id);
AVCodec *avcodec_find_decoder_by_name(const char *name);
void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode);
AVCodecContext *avcodec_alloc_context(void);
int avcodec_open(AVCodecContext *avctx, AVCodec *codec);
int avcodec_decode_audio(AVCodecContext *avctx, INT16 *samples,
int *frame_size_ptr,
UINT8 *buf, int buf_size);
int avcodec_decode_video(AVCodecContext *avctx, AVPicture *picture,
int *got_picture_ptr,
UINT8 *buf, int buf_size);
int avcodec_parse_frame(AVCodecContext *avctx, UINT8 **pdata,
int *data_size_ptr,
UINT8 *buf, int buf_size);
int avcodec_encode_audio(AVCodecContext *avctx, UINT8 *buf, int buf_size,
const short *samples);
int avcodec_encode_video(AVCodecContext *avctx, UINT8 *buf, int buf_size,
const AVPicture *pict);
int avcodec_close(AVCodecContext *avctx);
void avcodec_register_all(void);
void avcodec_flush_buffers(AVCodecContext *avctx);
/**
* Interface for 0.5.0 version
*
* do not even think about it's usage for this moment
*/
typedef struct {
// compressed size used from given memory buffer
int size;
/// I/P/B frame type
int frame_type;
} avc_enc_result_t;
/**
* Commands
* order can't be changed - once it was defined
*/
typedef enum {
// general commands
AVC_OPEN_BY_NAME = 0xACA000,
AVC_OPEN_BY_CODEC_ID,
AVC_OPEN_BY_FOURCC,
AVC_CLOSE,
AVC_FLUSH,
// pin - struct { uint8_t* src, uint_t src_size }
// pout - struct { AVPicture* img, consumed_bytes,
AVC_DECODE,
// pin - struct { AVPicture* img, uint8_t* dest, uint_t dest_size }
// pout - uint_t used_from_dest_size
AVC_ENCODE,
// query/get video commands
AVC_GET_VERSION = 0xACB000,
AVC_GET_WIDTH,
AVC_GET_HEIGHT,
AVC_GET_DELAY,
AVC_GET_QUANT_TABLE,
// ...
// query/get audio commands
AVC_GET_FRAME_SIZE = 0xABC000,
// maybe define some simple structure which
// might be passed to the user - but they can't
// contain any codec specific parts and these
// calls are usualy necessary only few times
// set video commands
AVC_SET_WIDTH = 0xACD000,
AVC_SET_HEIGHT,
// set video encoding commands
AVC_SET_FRAME_RATE = 0xACD800,
AVC_SET_QUALITY,
AVC_SET_HURRY_UP,
// set audio commands
AVC_SET_SAMPLE_RATE = 0xACE000,
AVC_SET_CHANNELS,
} avc_cmd_t;
/**
* \param handle allocated private structure by libavcodec
* for initialization pass NULL - will be returned pout
* user is supposed to know nothing about its structure
* \param cmd type of operation to be performed
* \param pint input parameter
* \param pout output parameter
*
* \returns command status - eventually for query command it might return
* integer resulting value
*/
int avcodec(void* handle, avc_cmd_t cmd, void* pin, void* pout);
/* memory */
void *av_malloc(unsigned int size);
void *av_mallocz(unsigned int size);
void av_free(void *ptr);
void __av_freep(void **ptr);
#define av_freep(p) __av_freep((void **)(p))
#endif /* AVCODEC_H */
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