new ratecontrol code
[libav.git] / libavcodec / avcodec.h
CommitLineData
a96b68b7
FB
1#ifndef AVCODEC_H
2#define AVCODEC_H
3
de6d9b64
FB
4#include "common.h"
5
4b1f4f23
J
6#define LIBAVCODEC_VERSION_INT 0x000406
7#define LIBAVCODEC_VERSION "0.4.6"
87f8cab4
MN
8#define LIBAVCODEC_BUILD 4619
9#define LIBAVCODEC_BUILD_STR "4619"
4b1f4f23 10
de6d9b64
FB
11enum CodecID {
12 CODEC_ID_NONE,
13 CODEC_ID_MPEG1VIDEO,
14 CODEC_ID_H263,
15 CODEC_ID_RV10,
16 CODEC_ID_MP2,
9d36bdc9 17 CODEC_ID_MP3LAME,
de6d9b64
FB
18 CODEC_ID_AC3,
19 CODEC_ID_MJPEG,
bf89e6b1 20 CODEC_ID_MPEG4,
de6d9b64 21 CODEC_ID_RAWVIDEO,
84afee34
MN
22 CODEC_ID_MSMPEG4V1,
23 CODEC_ID_MSMPEG4V2,
24 CODEC_ID_MSMPEG4V3,
e1a9dbff 25 CODEC_ID_WMV1,
b50eef3a 26 CODEC_ID_WMV2,
de6d9b64
FB
27 CODEC_ID_H263P,
28 CODEC_ID_H263I,
be8ffec9 29 CODEC_ID_SVQ1,
a96b68b7
FB
30
31 /* various pcm "codecs" */
32 CODEC_ID_PCM_S16LE,
33 CODEC_ID_PCM_S16BE,
34 CODEC_ID_PCM_U16LE,
35 CODEC_ID_PCM_U16BE,
36 CODEC_ID_PCM_S8,
37 CODEC_ID_PCM_U8,
38 CODEC_ID_PCM_MULAW,
39 CODEC_ID_PCM_ALAW,
0147f198
FR
40
41 /* various adpcm codecs */
42 CODEC_ID_ADPCM_IMA_QT,
43 CODEC_ID_ADPCM_IMA_WAV,
44 CODEC_ID_ADPCM_MS,
de6d9b64 45};
84afee34 46#define CODEC_ID_MSMPEG4 CODEC_ID_MSMPEG4V3
de6d9b64
FB
47
48enum CodecType {
4a663d80 49 CODEC_TYPE_UNKNOWN = -1,
de6d9b64
FB
50 CODEC_TYPE_VIDEO,
51 CODEC_TYPE_AUDIO,
52};
53
54enum PixelFormat {
9f862d11 55 PIX_FMT_ANY = -1,
de6d9b64
FB
56 PIX_FMT_YUV420P,
57 PIX_FMT_YUV422,
58 PIX_FMT_RGB24,
59 PIX_FMT_BGR24,
d9fea0b5
FB
60 PIX_FMT_YUV422P,
61 PIX_FMT_YUV444P,
b71472eb
PG
62 PIX_FMT_RGBA32,
63 PIX_FMT_BGRA32,
be8ffec9 64 PIX_FMT_YUV410P
de6d9b64
FB
65};
66
a96b68b7
FB
67/* currently unused, may be used if 24/32 bits samples ever supported */
68enum SampleFormat {
69 SAMPLE_FMT_S16 = 0, /* signed 16 bits */
70};
71
de6d9b64
FB
72/* in bytes */
73#define AVCODEC_MAX_AUDIO_FRAME_SIZE 18432
74
e4986da9
J
75/* motion estimation type, EPZS by default */
76enum Motion_Est_ID {
101bea5f 77 ME_ZERO = 1,
e4986da9
J
78 ME_FULL,
79 ME_LOG,
80 ME_PHODS,
81 ME_EPZS,
82 ME_X1
83};
84
101bea5f
J
85/* only for ME compatiblity with old apps */
86extern int motion_estimation_method;
87
e4986da9 88/* ME algos sorted by quality */
bc6caae2
J
89static const int Motion_Est_QTab[] = { ME_ZERO, ME_PHODS, ME_LOG,
90 ME_X1, ME_EPZS, ME_FULL };
de6d9b64 91
9dbcbd92
MN
92#define FF_MAX_B_FRAMES 4
93
de6d9b64 94/* encoding support */
ba6802de 95/* note not everything is supported yet */
de6d9b64
FB
96
97#define CODEC_FLAG_HQ 0x0001 /* high quality (non real time) encoding */
98#define CODEC_FLAG_QSCALE 0x0002 /* use fixed qscale */
ba6802de 99#define CODEC_FLAG_4MV 0x0004 /* 4 MV per MB allowed */
ba6802de
MN
100#define CODEC_FLAG_QPEL 0x0010 /* use qpel MC */
101#define CODEC_FLAG_GMC 0x0020 /* use GMC */
60e575ac 102#define CODEC_FLAG_TYPE 0x0040 /* fixed I/P frame type, from avctx->key_frame */
1f6b6e50 103#define CODEC_FLAG_PART 0x0080 /* use data partitioning */
9dbcbd92
MN
104/* parent program gurantees that the input for b-frame containing streams is not written to
105 for at least s->max_b_frames+1 frames, if this is not set than the input will be copied */
8b4c7dbc
MN
106#define CODEC_FLAG_INPUT_PRESERVED 0x0100
107#define CODEC_FLAG_PASS1 0x0200 /* use internal 2pass ratecontrol in first pass mode */
108#define CODEC_FLAG_PASS2 0x0400 /* use internal 2pass ratecontrol in second pass mode */
e84c31dc 109#define CODEC_FLAG_EXTERN_HUFF 0x1000 /* use external huffman table (for mjpeg) */
93a21abd
MN
110#define CODEC_FLAG_GRAY 0x2000 /* only decode/encode grayscale */
111#define CODEC_FLAG_EMU_EDGE 0x4000/* dont draw edges */
112#define CODEC_FLAG_DR1 0x8000 /* dr1 */
bf89e6b1
FB
113/* codec capabilities */
114
115/* decoder can use draw_horiz_band callback */
116#define CODEC_CAP_DRAW_HORIZ_BAND 0x0001
93a21abd 117#define CODEC_CAP_DR1 0x0002 /* direct rendering method 1 */
917e06c8
FB
118/* if 'parse_only' field is true, then avcodec_parse_frame() can be
119 used */
120#define CODEC_CAP_PARSE_ONLY 0x0004
bf89e6b1 121
de6d9b64
FB
122#define FRAME_RATE_BASE 10000
123
124typedef struct AVCodecContext {
125 int bit_rate;
9cdd6a24 126 int bit_rate_tolerance; /* amount of +- bits (>0)*/
de6d9b64
FB
127 int flags;
128 int sub_id; /* some codecs needs additionnal format info. It is
129 stored there */
e4986da9
J
130
131 int me_method; /* ME algorithm used for video coding */
132
e84c31dc
A
133 /* extra data from parent application to codec, e.g. huffman table
134 for mjpeg */
135 /* the parent should allocate and free this buffer */
136 void *extradata;
137 int extradata_size;
138
de6d9b64
FB
139 /* video only */
140 int frame_rate; /* frames per sec multiplied by FRAME_RATE_BASE */
141 int width, height;
11ce8834 142 int aspect_ratio_info;
2efe097a
MN
143#define FF_ASPECT_SQUARE 1
144#define FF_ASPECT_4_3_625 2
145#define FF_ASPECT_4_3_525 3
146#define FF_ASPECT_16_9_625 4
147#define FF_ASPECT_16_9_525 5
de6d9b64 148 int gop_size; /* 0 = intra only */
bc657ac3 149 enum PixelFormat pix_fmt; /* pixel format, see PIX_FMT_xxx */
e0a3d744
J
150 int repeat_pict; /* when decoding, this signal how much the picture */
151 /* must be delayed. */
152 /* extra_delay = (repeat_pict / 2) * (1/fps) */
bf89e6b1
FB
153 /* if non NULL, 'draw_horiz_band' is called by the libavcodec
154 decoder to draw an horizontal band. It improve cache usage. Not
155 all codecs can do that. You must check the codec capabilities
156 before */
157 void (*draw_horiz_band)(struct AVCodecContext *s,
158 UINT8 **src_ptr, int linesize,
159 int y, int width, int height);
160
de6d9b64
FB
161 /* audio only */
162 int sample_rate; /* samples per sec */
163 int channels;
a96b68b7 164 int sample_fmt; /* sample format, currenly unused */
de6d9b64
FB
165
166 /* the following data should not be initialized */
9cd3766f
J
167 int frame_size; /* in samples, initialized when calling 'init' */
168 int frame_number; /* audio or video frame number */
169 int real_pict_num; /* returns the real picture number of
170 previous encoded frame */
171 int key_frame; /* true if the previous compressed frame was
172 a key frame (intra, or seekable) */
173 int pict_type; /* picture type of the previous
174 encoded frame */
175/* FIXME: these should have FF_ */
176#define I_TYPE 1 // Intra
177#define P_TYPE 2 // Predicted
178#define B_TYPE 3 // Bi-dir predicted
179#define S_TYPE 4 // S(GMC)-VOP MPEG4
180
181 int delay; /* number of frames the decoded output
182 will be delayed relative to the encoded input */
2417652e
MN
183 uint8_t *mbskip_table; /* =1 if MB didnt change, is only valid for I/P frames
184 stride= mb_width = (width+15)>>4 */
1ff662cc
MN
185
186 /* encoding parameters */
de6d9b64 187 int quality; /* quality of the previous encoded frame
8b4c7dbc
MN
188 (between 1 (good) and 31 (bad))
189 this is allso used to set the quality in vbr mode
190 and the per frame quality in CODEC_FLAG_TYPE (second pass mode) */
9cdd6a24
MN
191 float qcompress; /* amount of qscale change between easy & hard scenes (0.0-1.0)*/
192 float qblur; /* amount of qscale smoothing over time (0.0-1.0) */
193 int qmin; /* min qscale */
194 int qmax; /* max qscale */
195 int max_qdiff; /* max qscale difference between frames */
9dbcbd92 196 int max_b_frames; /* maximum b frames, the output will be delayed by max_b_frames+1 relative to the input */
8b4c7dbc
MN
197 float b_quant_factor;/* qscale factor between ips and b frames */
198 int rc_strategy;
199 int b_frame_strategy;
9dbcbd92 200
2417652e
MN
201 int hurry_up; /* when set to 1 during decoding, b frames will be skiped
202 when set to 2 idct/dequant will be skipped too */
203
de6d9b64
FB
204 struct AVCodec *codec;
205 void *priv_data;
206
644d98a4 207 /* The following data is for RTP friendly coding */
1f6b6e50 208 /* By now only H.263/H.263+/MPEG4 coder honours this */
644d98a4
J
209 int rtp_mode; /* 1 for activate RTP friendly-mode */
210 /* highers numbers represent more error-prone */
211 /* enviroments, by now just "1" exist */
212
213 int rtp_payload_size; /* The size of the RTP payload, the coder will */
214 /* do it's best to deliver a chunk with size */
215 /* below rtp_payload_size, the chunk will start */
216 /* with a start code on some codecs like H.263 */
217 /* This doesn't take account of any particular */
218 /* headers inside the transmited RTP payload */
81401c1f
J
219
220
221 /* The RTP callcack: This function is called */
222 /* every time the encoder as a packet to send */
223 /* Depends on the encoder if the data starts */
224 /* with a Start Code (it should) H.263 does */
225 void (*rtp_callback)(void *data, int size, int packet_number);
226
43f1708f
J
227 /* These are for PSNR calculation, if you set get_psnr to 1 */
228 /* after encoding you will have the PSNR on psnr_y/cb/cr */
229 int get_psnr;
230 float psnr_y;
231 float psnr_cb;
232 float psnr_cr;
098eefe1
MN
233
234 /* statistics, used for 2-pass encoding */
235 int mv_bits;
236 int header_bits;
237 int i_tex_bits;
238 int p_tex_bits;
239 int i_count;
240 int p_count;
241 int skip_count;
242 int misc_bits; // cbp, mb_type
243 int frame_bits;
644d98a4 244
de6d9b64 245 /* the following fields are ignored */
bf89e6b1 246 void *opaque; /* can be used to carry app specific stuff */
de6d9b64 247 char codec_name[32];
4a663d80
PG
248 enum CodecType codec_type; /* see CODEC_TYPE_xxx */
249 enum CodecID codec_id; /* see CODEC_ID_xxx */
de6d9b64 250 unsigned int codec_tag; /* codec tag, only used if unknown codec */
92ba5ffb
MN
251
252 int workaround_bugs; /* workaround bugs in encoders which cannot be detected automatically */
1f6b6e50
MN
253 int luma_elim_threshold;
254 int chroma_elim_threshold;
255 int strict_std_compliance; /* strictly follow the std (MPEG4, ...) */
256 float b_quant_offset;/* qscale offset between ips and b frames, not implemented yet */
257 int error_resilience;
ae72cda6
NK
258
259#ifndef MBC
260#define MBC 128
261#define MBR 96
262#endif
93a21abd
MN
263#define QP_TYPE int //FIXME note xxx this might be changed to int8_t
264
265 QP_TYPE *quant_store; /* field for communicating with external postprocessing */
93a21abd 266
917e06c8 267 unsigned qstride;
93a21abd
MN
268 uint8_t *dr_buffer[3];
269 int dr_stride;
270 void *dr_opaque_frame;
0fd90455
MN
271 void (*get_buffer_callback)(struct AVCodecContext *c, int width, int height, int pict_type);
272
273 int has_b_frames; // is 1 if the decoded stream contains b frames
274 int dr_uvstride;
275 int dr_ip_buffer_count;
0147f198 276 int block_align; /* currently only for adpcm codec in wav/avi */
93a21abd 277
917e06c8
FB
278 int parse_only; /* decoding only: if true, only parsing is done
279 (function avcodec_parse_frame()). The frame
280 data is returned. Only MPEG codecs support this now. */
87f8cab4 281 int mpeg_quant; /* 0-> h263 quant 1-> mpeg quant */
917e06c8 282
1f6b6e50 283 //FIXME this should be reordered after kabis API is finished ...
5d27890a
NK
284 /*
285 Note: Below are located reserved fields for further usage
286 It requires for ABI !!!
287 If you'll perform some changes then borrow new space from these fields
288 (void * can be safety replaced with struct * ;)
289 P L E A S E ! ! !
290 IMPORTANT: Never change order of already declared fields!!!
291 */
292 unsigned long long int
293 ull_res0,ull_res1,ull_res2,ull_res3,ull_res4,ull_res5,
294 ull_res6,ull_res7,ull_res8,ull_res9,ull_res10,ull_res11,ull_res12;
295 float
296 flt_res0,flt_res1,flt_res2,flt_res3,flt_res4,flt_res5,
1f6b6e50 297 flt_res6,flt_res7,flt_res8,flt_res9,flt_res10,flt_res11;
5d27890a
NK
298 void
299 *ptr_res0,*ptr_res1,*ptr_res2,*ptr_res3,*ptr_res4,*ptr_res5,
93a21abd 300 *ptr_res6;
5d27890a
NK
301 unsigned long int
302 ul_res0,ul_res1,ul_res2,ul_res3,ul_res4,ul_res5,
303 ul_res6,ul_res7,ul_res8,ul_res9,ul_res10,ul_res11,ul_res12;
5d27890a
NK
304 unsigned short int
305 us_res0,us_res1,us_res2,us_res3,us_res4,us_res5,
306 us_res6,us_res7,us_res8,us_res9,us_res10,us_res11,us_res12;
307 unsigned char
308 uc_res0,uc_res1,uc_res2,uc_res3,uc_res4,uc_res5,
0fd90455 309 uc_res6,uc_res7,uc_res8,uc_res9,uc_res10,uc_res11,uc_res12;
de6d9b64
FB
310} AVCodecContext;
311
312typedef struct AVCodec {
313 char *name;
314 int type;
315 int id;
316 int priv_data_size;
317 int (*init)(AVCodecContext *);
318 int (*encode)(AVCodecContext *, UINT8 *buf, int buf_size, void *data);
319 int (*close)(AVCodecContext *);
0fd90455 320 int (*decode)(AVCodecContext *, void *outdata, int *outdata_size,
de6d9b64 321 UINT8 *buf, int buf_size);
bf89e6b1 322 int capabilities;
de6d9b64 323 struct AVCodec *next;
5d27890a
NK
324 /*
325 Note: Below are located reserved fields for further usage
326 It requires for ABI !!!
327 If you'll perform some changes then borrow new space from these fields
328 (void * can be safety replaced with struct * ;)
329 P L E A S E ! ! !
330 IMPORTANT: Never change order of already declared fields!!!
331 */
332 unsigned long long int
333 ull_res0,ull_res1,ull_res2,ull_res3,ull_res4,ull_res5,
334 ull_res6,ull_res7,ull_res8,ull_res9,ull_res10,ull_res11,ull_res12;
335 float
336 flt_res0,flt_res1,flt_res2,flt_res3,flt_res4,flt_res5,
337 flt_res6,flt_res7,flt_res8,flt_res9,flt_res10,flt_res11,flt_res12;
338 void
339 *ptr_res0,*ptr_res1,*ptr_res2,*ptr_res3,*ptr_res4,*ptr_res5,
340 *ptr_res6,*ptr_res7,*ptr_res8,*ptr_res9,*ptr_res10,*ptr_res11,*ptr_res12;
de6d9b64
FB
341} AVCodec;
342
343/* three components are given, that's all */
344typedef struct AVPicture {
345 UINT8 *data[3];
346 int linesize[3];
347} AVPicture;
348
349extern AVCodec ac3_encoder;
350extern AVCodec mp2_encoder;
9d36bdc9 351extern AVCodec mp3lame_encoder;
de6d9b64
FB
352extern AVCodec mpeg1video_encoder;
353extern AVCodec h263_encoder;
354extern AVCodec h263p_encoder;
355extern AVCodec rv10_encoder;
356extern AVCodec mjpeg_encoder;
bf89e6b1 357extern AVCodec mpeg4_encoder;
84afee34
MN
358extern AVCodec msmpeg4v1_encoder;
359extern AVCodec msmpeg4v2_encoder;
360extern AVCodec msmpeg4v3_encoder;
0151a6f5
MN
361extern AVCodec wmv1_encoder;
362extern AVCodec wmv2_encoder;
de6d9b64
FB
363
364extern AVCodec h263_decoder;
bf89e6b1 365extern AVCodec mpeg4_decoder;
84afee34
MN
366extern AVCodec msmpeg4v1_decoder;
367extern AVCodec msmpeg4v2_decoder;
368extern AVCodec msmpeg4v3_decoder;
e1a9dbff 369extern AVCodec wmv1_decoder;
0151a6f5 370extern AVCodec wmv2_decoder;
de6d9b64
FB
371extern AVCodec mpeg_decoder;
372extern AVCodec h263i_decoder;
373extern AVCodec rv10_decoder;
be8ffec9 374extern AVCodec svq1_decoder;
4e66ab3b 375extern AVCodec mjpeg_decoder;
4b1f4f23 376extern AVCodec mp2_decoder;
a96b68b7 377extern AVCodec mp3_decoder;
de6d9b64 378
a96b68b7
FB
379/* pcm codecs */
380#define PCM_CODEC(id, name) \
381extern AVCodec name ## _decoder; \
382extern AVCodec name ## _encoder;
383
384PCM_CODEC(CODEC_ID_PCM_S16LE, pcm_s16le);
385PCM_CODEC(CODEC_ID_PCM_S16BE, pcm_s16be);
386PCM_CODEC(CODEC_ID_PCM_U16LE, pcm_u16le);
387PCM_CODEC(CODEC_ID_PCM_U16BE, pcm_u16be);
388PCM_CODEC(CODEC_ID_PCM_S8, pcm_s8);
389PCM_CODEC(CODEC_ID_PCM_U8, pcm_u8);
390PCM_CODEC(CODEC_ID_PCM_ALAW, pcm_alaw);
391PCM_CODEC(CODEC_ID_PCM_MULAW, pcm_mulaw);
392
0147f198
FR
393/* adpcm codecs */
394
395PCM_CODEC(CODEC_ID_ADPCM_IMA_QT, adpcm_ima_qt);
396PCM_CODEC(CODEC_ID_ADPCM_IMA_WAV, adpcm_ima_wav);
397PCM_CODEC(CODEC_ID_ADPCM_MS, adpcm_ms);
398
a96b68b7
FB
399#undef PCM_CODEC
400
401/* dummy raw video codec */
de6d9b64
FB
402extern AVCodec rawvideo_codec;
403
404/* the following codecs use external GPL libs */
de6d9b64
FB
405extern AVCodec ac3_decoder;
406
407/* resample.c */
408
409struct ReSampleContext;
410
411typedef struct ReSampleContext ReSampleContext;
412
413ReSampleContext *audio_resample_init(int output_channels, int input_channels,
414 int output_rate, int input_rate);
415int audio_resample(ReSampleContext *s, short *output, short *input, int nb_samples);
416void audio_resample_close(ReSampleContext *s);
417
418/* YUV420 format is assumed ! */
419
420struct ImgReSampleContext;
421
422typedef struct ImgReSampleContext ImgReSampleContext;
423
424ImgReSampleContext *img_resample_init(int output_width, int output_height,
425 int input_width, int input_height);
426void img_resample(ImgReSampleContext *s,
427 AVPicture *output, AVPicture *input);
428
429void img_resample_close(ImgReSampleContext *s);
430
219b06c6
FB
431void avpicture_fill(AVPicture *picture, UINT8 *ptr,
432 int pix_fmt, int width, int height);
433int avpicture_get_size(int pix_fmt, int width, int height);
434
435/* convert among pixel formats */
436int img_convert(AVPicture *dst, int dst_pix_fmt,
437 AVPicture *src, int pix_fmt,
438 int width, int height);
439
440/* deinterlace a picture */
441int avpicture_deinterlace(AVPicture *dst, AVPicture *src,
de6d9b64
FB
442 int pix_fmt, int width, int height);
443
444/* external high level API */
445
446extern AVCodec *first_avcodec;
447
156e5023 448/* returns LIBAVCODEC_VERSION_INT constant */
51a49663 449unsigned avcodec_version(void);
8bceb6af 450/* returns LIBAVCODEC_BUILD constant */
51a49663 451unsigned avcodec_build(void);
de6d9b64
FB
452void avcodec_init(void);
453
51a49663
FB
454void avcodec_set_bit_exact(void);
455
de6d9b64
FB
456void register_avcodec(AVCodec *format);
457AVCodec *avcodec_find_encoder(enum CodecID id);
98f3b098 458AVCodec *avcodec_find_encoder_by_name(const char *name);
de6d9b64
FB
459AVCodec *avcodec_find_decoder(enum CodecID id);
460AVCodec *avcodec_find_decoder_by_name(const char *name);
461void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode);
462
463int avcodec_open(AVCodecContext *avctx, AVCodec *codec);
464int avcodec_decode_audio(AVCodecContext *avctx, INT16 *samples,
465 int *frame_size_ptr,
466 UINT8 *buf, int buf_size);
467int avcodec_decode_video(AVCodecContext *avctx, AVPicture *picture,
468 int *got_picture_ptr,
469 UINT8 *buf, int buf_size);
917e06c8
FB
470int avcodec_parse_frame(AVCodecContext *avctx, UINT8 **pdata,
471 int *data_size_ptr,
472 UINT8 *buf, int buf_size);
de6d9b64
FB
473int avcodec_encode_audio(AVCodecContext *avctx, UINT8 *buf, int buf_size,
474 const short *samples);
475int avcodec_encode_video(AVCodecContext *avctx, UINT8 *buf, int buf_size,
476 const AVPicture *pict);
477
478int avcodec_close(AVCodecContext *avctx);
479
480void avcodec_register_all(void);
a96b68b7 481
1c2a8c7f
MN
482void avcodec_flush_buffers(AVCodecContext *avctx);
483
79e7b305 484#ifdef FF_POSTPROCESS
79e7b305
A
485extern int quant_store[MBR+1][MBC+1]; // [Review]
486#endif
487
e8f14793
ZK
488
489/**
490 * Interface for 0.5.0 version
491 *
492 * do not even think about it's usage for this moment
493 */
494
495typedef struct {
496 // compressed size used from given memory buffer
497 int size;
498 /// I/P/B frame type
499 int frame_type;
500} avc_enc_result_t;
501
502/**
503 * Commands
504 * order can't be changed - once it was defined
505 */
506typedef enum {
507 // general commands
508 AVC_OPEN_BY_NAME = 0xACA000,
509 AVC_OPEN_BY_CODEC_ID,
510 AVC_OPEN_BY_FOURCC,
511 AVC_CLOSE,
512
513 AVC_FLUSH,
514 // pin - struct { uint8_t* src, uint_t src_size }
515 // pout - struct { AVPicture* img, consumed_bytes,
516 AVC_DECODE,
517 // pin - struct { AVPicture* img, uint8_t* dest, uint_t dest_size }
518 // pout - uint_t used_from_dest_size
519 AVC_ENCODE,
520
521 // query/get video commands
522 AVC_GET_VERSION = 0xACB000,
523 AVC_GET_WIDTH,
524 AVC_GET_HEIGHT,
525 AVC_GET_DELAY,
526 AVC_GET_QUANT_TABLE,
527 // ...
528
529 // query/get audio commands
530 AVC_GET_FRAME_SIZE = 0xABC000,
531
532 // maybe define some simple structure which
533 // might be passed to the user - but they can't
534 // contain any codec specific parts and these
535 // calls are usualy necessary only few times
536
537 // set video commands
538 AVC_SET_WIDTH = 0xACD000,
539 AVC_SET_HEIGHT,
540
541 // set video encoding commands
542 AVC_SET_FRAME_RATE = 0xACD800,
543 AVC_SET_QUALITY,
544 AVC_SET_HURRY_UP,
545
546 // set audio commands
547 AVC_SET_SAMPLE_RATE = 0xACE000,
548 AVC_SET_CHANNELS,
549
550} avc_cmd_t;
551
552/**
553 * \param handle allocated private structure by libavcodec
554 * for initialization pass NULL - will be returned pout
555 * user is supposed to know nothing about its structure
556 * \param cmd type of operation to be performed
557 * \param pint input parameter
558 * \param pout output parameter
559 *
560 * \returns command status - eventually for query command it might return
561 * integer resulting value
562 */
563int avcodec(void* handle, avc_cmd_t cmd, void* pin, void* pout);
564
544eb99c
FB
565/* memory */
566void *av_malloc(int size);
567void *av_mallocz(int size);
568void av_free(void *ptr);
569void __av_freep(void **ptr);
570#define av_freep(p) __av_freep((void **)(p))
571
a96b68b7 572#endif /* AVCODEC_H */