undefined M_PI / M_E fix
[libav.git] / libavcodec / avcodec.h
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1#ifndef AVCODEC_H
2#define AVCODEC_H
3
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4#include "common.h"
5
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6#define LIBAVCODEC_VERSION_INT 0x000406
7#define LIBAVCODEC_VERSION "0.4.6"
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8#define LIBAVCODEC_BUILD 4621
9#define LIBAVCODEC_BUILD_STR "4621"
4b1f4f23 10
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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,
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18 CODEC_ID_AC3,
19 CODEC_ID_MJPEG,
bf89e6b1 20 CODEC_ID_MPEG4,
de6d9b64 21 CODEC_ID_RAWVIDEO,
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22 CODEC_ID_MSMPEG4V1,
23 CODEC_ID_MSMPEG4V2,
24 CODEC_ID_MSMPEG4V3,
e1a9dbff 25 CODEC_ID_WMV1,
b50eef3a 26 CODEC_ID_WMV2,
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27 CODEC_ID_H263P,
28 CODEC_ID_H263I,
be8ffec9 29 CODEC_ID_SVQ1,
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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,
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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
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47
48enum CodecType {
4a663d80 49 CODEC_TYPE_UNKNOWN = -1,
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50 CODEC_TYPE_VIDEO,
51 CODEC_TYPE_AUDIO,
52};
53
54enum PixelFormat {
9f862d11 55 PIX_FMT_ANY = -1,
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56 PIX_FMT_YUV420P,
57 PIX_FMT_YUV422,
58 PIX_FMT_RGB24,
59 PIX_FMT_BGR24,
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60 PIX_FMT_YUV422P,
61 PIX_FMT_YUV444P,
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62 PIX_FMT_RGBA32,
63 PIX_FMT_BGRA32,
be8ffec9 64 PIX_FMT_YUV410P
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65};
66
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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
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72/* in bytes */
73#define AVCODEC_MAX_AUDIO_FRAME_SIZE 18432
74
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75/* motion estimation type, EPZS by default */
76enum Motion_Est_ID {
101bea5f 77 ME_ZERO = 1,
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78 ME_FULL,
79 ME_LOG,
80 ME_PHODS,
81 ME_EPZS,
82 ME_X1
83};
84
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85typedef struct RcOverride{
86 int start_frame;
87 int end_frame;
88 int qscale; // if this is 0 then quality_factor will be used instead
89 float quality_factor;
90} RcOverride;
91
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92/* only for ME compatiblity with old apps */
93extern int motion_estimation_method;
94
e4986da9 95/* ME algos sorted by quality */
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96static const int Motion_Est_QTab[] = { ME_ZERO, ME_PHODS, ME_LOG,
97 ME_X1, ME_EPZS, ME_FULL };
de6d9b64 98
28db7fce 99
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100#define FF_MAX_B_FRAMES 4
101
de6d9b64 102/* encoding support */
ba6802de 103/* note not everything is supported yet */
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104
105#define CODEC_FLAG_HQ 0x0001 /* high quality (non real time) encoding */
106#define CODEC_FLAG_QSCALE 0x0002 /* use fixed qscale */
ba6802de 107#define CODEC_FLAG_4MV 0x0004 /* 4 MV per MB allowed */
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108#define CODEC_FLAG_QPEL 0x0010 /* use qpel MC */
109#define CODEC_FLAG_GMC 0x0020 /* use GMC */
60e575ac 110#define CODEC_FLAG_TYPE 0x0040 /* fixed I/P frame type, from avctx->key_frame */
1f6b6e50 111#define CODEC_FLAG_PART 0x0080 /* use data partitioning */
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112/* parent program gurantees that the input for b-frame containing streams is not written to
113 for at least s->max_b_frames+1 frames, if this is not set than the input will be copied */
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114#define CODEC_FLAG_INPUT_PRESERVED 0x0100
115#define CODEC_FLAG_PASS1 0x0200 /* use internal 2pass ratecontrol in first pass mode */
116#define CODEC_FLAG_PASS2 0x0400 /* use internal 2pass ratecontrol in second pass mode */
e84c31dc 117#define CODEC_FLAG_EXTERN_HUFF 0x1000 /* use external huffman table (for mjpeg) */
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118#define CODEC_FLAG_GRAY 0x2000 /* only decode/encode grayscale */
119#define CODEC_FLAG_EMU_EDGE 0x4000/* dont draw edges */
120#define CODEC_FLAG_DR1 0x8000 /* dr1 */
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121/* codec capabilities */
122
123/* decoder can use draw_horiz_band callback */
124#define CODEC_CAP_DRAW_HORIZ_BAND 0x0001
93a21abd 125#define CODEC_CAP_DR1 0x0002 /* direct rendering method 1 */
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126/* if 'parse_only' field is true, then avcodec_parse_frame() can be
127 used */
128#define CODEC_CAP_PARSE_ONLY 0x0004
bf89e6b1 129
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130#define FRAME_RATE_BASE 10000
131
132typedef struct AVCodecContext {
133 int bit_rate;
9cdd6a24 134 int bit_rate_tolerance; /* amount of +- bits (>0)*/
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135 int flags;
136 int sub_id; /* some codecs needs additionnal format info. It is
137 stored there */
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138
139 int me_method; /* ME algorithm used for video coding */
140
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141 /* extra data from parent application to codec, e.g. huffman table
142 for mjpeg */
143 /* the parent should allocate and free this buffer */
144 void *extradata;
145 int extradata_size;
146
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147 /* video only */
148 int frame_rate; /* frames per sec multiplied by FRAME_RATE_BASE */
149 int width, height;
11ce8834 150 int aspect_ratio_info;
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151#define FF_ASPECT_SQUARE 1
152#define FF_ASPECT_4_3_625 2
153#define FF_ASPECT_4_3_525 3
154#define FF_ASPECT_16_9_625 4
155#define FF_ASPECT_16_9_525 5
e769f053 156#define FF_ASPECT_EXTENDED 15
de6d9b64 157 int gop_size; /* 0 = intra only */
bc657ac3 158 enum PixelFormat pix_fmt; /* pixel format, see PIX_FMT_xxx */
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159 int repeat_pict; /* when decoding, this signal how much the picture */
160 /* must be delayed. */
161 /* extra_delay = (repeat_pict / 2) * (1/fps) */
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162 /* if non NULL, 'draw_horiz_band' is called by the libavcodec
163 decoder to draw an horizontal band. It improve cache usage. Not
164 all codecs can do that. You must check the codec capabilities
165 before */
166 void (*draw_horiz_band)(struct AVCodecContext *s,
167 UINT8 **src_ptr, int linesize,
168 int y, int width, int height);
169
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170 /* audio only */
171 int sample_rate; /* samples per sec */
172 int channels;
a96b68b7 173 int sample_fmt; /* sample format, currenly unused */
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174
175 /* the following data should not be initialized */
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176 int frame_size; /* in samples, initialized when calling 'init' */
177 int frame_number; /* audio or video frame number */
178 int real_pict_num; /* returns the real picture number of
179 previous encoded frame */
180 int key_frame; /* true if the previous compressed frame was
181 a key frame (intra, or seekable) */
182 int pict_type; /* picture type of the previous
183 encoded frame */
184/* FIXME: these should have FF_ */
185#define I_TYPE 1 // Intra
186#define P_TYPE 2 // Predicted
187#define B_TYPE 3 // Bi-dir predicted
188#define S_TYPE 4 // S(GMC)-VOP MPEG4
189
190 int delay; /* number of frames the decoded output
191 will be delayed relative to the encoded input */
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192 uint8_t *mbskip_table; /* =1 if MB didnt change, is only valid for I/P frames
193 stride= mb_width = (width+15)>>4 */
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194
195 /* encoding parameters */
de6d9b64 196 int quality; /* quality of the previous encoded frame
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197 (between 1 (good) and 31 (bad))
198 this is allso used to set the quality in vbr mode
199 and the per frame quality in CODEC_FLAG_TYPE (second pass mode) */
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200 float qcompress; /* amount of qscale change between easy & hard scenes (0.0-1.0)*/
201 float qblur; /* amount of qscale smoothing over time (0.0-1.0) */
202 int qmin; /* min qscale */
203 int qmax; /* max qscale */
204 int max_qdiff; /* max qscale difference between frames */
9dbcbd92 205 int max_b_frames; /* maximum b frames, the output will be delayed by max_b_frames+1 relative to the input */
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206 float b_quant_factor;/* qscale factor between ps and b frames */
207 int rc_strategy; /* obsolete FIXME remove */
8b4c7dbc 208 int b_frame_strategy;
9dbcbd92 209
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210 int hurry_up; /* when set to 1 during decoding, b frames will be skiped
211 when set to 2 idct/dequant will be skipped too */
212
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213 struct AVCodec *codec;
214 void *priv_data;
215
644d98a4 216 /* The following data is for RTP friendly coding */
1f6b6e50 217 /* By now only H.263/H.263+/MPEG4 coder honours this */
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218 int rtp_mode; /* 1 for activate RTP friendly-mode */
219 /* highers numbers represent more error-prone */
220 /* enviroments, by now just "1" exist */
221
222 int rtp_payload_size; /* The size of the RTP payload, the coder will */
223 /* do it's best to deliver a chunk with size */
224 /* below rtp_payload_size, the chunk will start */
225 /* with a start code on some codecs like H.263 */
226 /* This doesn't take account of any particular */
227 /* headers inside the transmited RTP payload */
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228
229
230 /* The RTP callcack: This function is called */
231 /* every time the encoder as a packet to send */
232 /* Depends on the encoder if the data starts */
233 /* with a Start Code (it should) H.263 does */
234 void (*rtp_callback)(void *data, int size, int packet_number);
235
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236 /* These are for PSNR calculation, if you set get_psnr to 1 */
237 /* after encoding you will have the PSNR on psnr_y/cb/cr */
238 int get_psnr;
239 float psnr_y;
240 float psnr_cb;
241 float psnr_cr;
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242
243 /* statistics, used for 2-pass encoding */
244 int mv_bits;
245 int header_bits;
246 int i_tex_bits;
247 int p_tex_bits;
248 int i_count;
249 int p_count;
250 int skip_count;
251 int misc_bits; // cbp, mb_type
252 int frame_bits;
644d98a4 253
de6d9b64 254 /* the following fields are ignored */
bf89e6b1 255 void *opaque; /* can be used to carry app specific stuff */
de6d9b64 256 char codec_name[32];
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257 enum CodecType codec_type; /* see CODEC_TYPE_xxx */
258 enum CodecID codec_id; /* see CODEC_ID_xxx */
de6d9b64 259 unsigned int codec_tag; /* codec tag, only used if unknown codec */
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260
261 int workaround_bugs; /* workaround bugs in encoders which cannot be detected automatically */
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262 int luma_elim_threshold;
263 int chroma_elim_threshold;
264 int strict_std_compliance; /* strictly follow the std (MPEG4, ...) */
265 float b_quant_offset;/* qscale offset between ips and b frames, not implemented yet */
266 int error_resilience;
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267
268#ifndef MBC
269#define MBC 128
270#define MBR 96
271#endif
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272#define QP_TYPE int //FIXME note xxx this might be changed to int8_t
273
274 QP_TYPE *quant_store; /* field for communicating with external postprocessing */
93a21abd 275
917e06c8 276 unsigned qstride;
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277 uint8_t *dr_buffer[3];
278 int dr_stride;
279 void *dr_opaque_frame;
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280 void (*get_buffer_callback)(struct AVCodecContext *c, int width, int height, int pict_type);
281
282 int has_b_frames; // is 1 if the decoded stream contains b frames
283 int dr_uvstride;
284 int dr_ip_buffer_count;
0147f198 285 int block_align; /* currently only for adpcm codec in wav/avi */
ce980a95 286
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287 int parse_only; /* decoding only: if true, only parsing is done
288 (function avcodec_parse_frame()). The frame
289 data is returned. Only MPEG codecs support this now. */
ce980a95 290
87f8cab4 291 int mpeg_quant; /* 0-> h263 quant 1-> mpeg quant */
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292
293 char *stats_out; /* encoding statistics output buffer */
294 char *stats_in; /* encoding statistics input buffer (concatenated stuff from stats_out of pass1 should be placed here)*/
295 float rc_qsquish;
296 float rc_qmod_amp;
297 int rc_qmod_freq;
298 RcOverride *rc_override;
299 int rc_override_count;
300 char *rc_eq;
301 int rc_max_rate;
302 int rc_min_rate;
303 int rc_buffer_size;
304 float rc_buffer_aggressivity;
305 float i_quant_factor;/* qscale factor between i and p frames */
306 float i_quant_offset;/* qscale offset between i and p frames */
307 float rc_initial_cplx;
917e06c8 308
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309 int aspected_width;
310 int aspected_height;
311
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312 int dct_algo;
313#define FF_DCT_AUTO 0
314#define FF_DCT_FASTINT 1
315#define FF_DCT_INT 2
316#define FF_DCT_MMX 3
317
1f6b6e50 318 //FIXME this should be reordered after kabis API is finished ...
ce980a95 319 //TODO kill kabi
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320 /*
321 Note: Below are located reserved fields for further usage
322 It requires for ABI !!!
323 If you'll perform some changes then borrow new space from these fields
324 (void * can be safety replaced with struct * ;)
325 P L E A S E ! ! !
326 IMPORTANT: Never change order of already declared fields!!!
327 */
328 unsigned long long int
329 ull_res0,ull_res1,ull_res2,ull_res3,ull_res4,ull_res5,
330 ull_res6,ull_res7,ull_res8,ull_res9,ull_res10,ull_res11,ull_res12;
331 float
332 flt_res0,flt_res1,flt_res2,flt_res3,flt_res4,flt_res5,
ce980a95 333 flt_res6,flt_res7,flt_res8,flt_res9,flt_res10,flt_res11,flt_res12;
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334 void
335 *ptr_res0,*ptr_res1,*ptr_res2,*ptr_res3,*ptr_res4,*ptr_res5,
ce980a95 336 *ptr_res6,*ptr_res7,*ptr_res8,*ptr_res9,*ptr_res10,*ptr_res11,*ptr_res12;
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337 unsigned long int
338 ul_res0,ul_res1,ul_res2,ul_res3,ul_res4,ul_res5,
339 ul_res6,ul_res7,ul_res8,ul_res9,ul_res10,ul_res11,ul_res12;
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340 unsigned short int
341 us_res0,us_res1,us_res2,us_res3,us_res4,us_res5,
342 us_res6,us_res7,us_res8,us_res9,us_res10,us_res11,us_res12;
343 unsigned char
344 uc_res0,uc_res1,uc_res2,uc_res3,uc_res4,uc_res5,
0fd90455 345 uc_res6,uc_res7,uc_res8,uc_res9,uc_res10,uc_res11,uc_res12;
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346 unsigned int
347 ui_res0,ui_res1,ui_res2,ui_res3,ui_res4,ui_res5,ui_res6,ui_res7,ui_res8,ui_res9,
28db7fce 348 ui_res10,ui_res11,ui_res12,ui_res13,ui_res14,ui_res15,ui_res16;
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349} AVCodecContext;
350
351typedef struct AVCodec {
352 char *name;
353 int type;
354 int id;
355 int priv_data_size;
356 int (*init)(AVCodecContext *);
357 int (*encode)(AVCodecContext *, UINT8 *buf, int buf_size, void *data);
358 int (*close)(AVCodecContext *);
0fd90455 359 int (*decode)(AVCodecContext *, void *outdata, int *outdata_size,
de6d9b64 360 UINT8 *buf, int buf_size);
bf89e6b1 361 int capabilities;
de6d9b64 362 struct AVCodec *next;
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363 /*
364 Note: Below are located reserved fields for further usage
365 It requires for ABI !!!
366 If you'll perform some changes then borrow new space from these fields
367 (void * can be safety replaced with struct * ;)
368 P L E A S E ! ! !
369 IMPORTANT: Never change order of already declared fields!!!
370 */
371 unsigned long long int
372 ull_res0,ull_res1,ull_res2,ull_res3,ull_res4,ull_res5,
373 ull_res6,ull_res7,ull_res8,ull_res9,ull_res10,ull_res11,ull_res12;
374 float
375 flt_res0,flt_res1,flt_res2,flt_res3,flt_res4,flt_res5,
376 flt_res6,flt_res7,flt_res8,flt_res9,flt_res10,flt_res11,flt_res12;
377 void
378 *ptr_res0,*ptr_res1,*ptr_res2,*ptr_res3,*ptr_res4,*ptr_res5,
379 *ptr_res6,*ptr_res7,*ptr_res8,*ptr_res9,*ptr_res10,*ptr_res11,*ptr_res12;
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380} AVCodec;
381
382/* three components are given, that's all */
383typedef struct AVPicture {
384 UINT8 *data[3];
385 int linesize[3];
386} AVPicture;
387
388extern AVCodec ac3_encoder;
389extern AVCodec mp2_encoder;
9d36bdc9 390extern AVCodec mp3lame_encoder;
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391extern AVCodec mpeg1video_encoder;
392extern AVCodec h263_encoder;
393extern AVCodec h263p_encoder;
394extern AVCodec rv10_encoder;
395extern AVCodec mjpeg_encoder;
bf89e6b1 396extern AVCodec mpeg4_encoder;
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397extern AVCodec msmpeg4v1_encoder;
398extern AVCodec msmpeg4v2_encoder;
399extern AVCodec msmpeg4v3_encoder;
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400extern AVCodec wmv1_encoder;
401extern AVCodec wmv2_encoder;
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402
403extern AVCodec h263_decoder;
bf89e6b1 404extern AVCodec mpeg4_decoder;
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405extern AVCodec msmpeg4v1_decoder;
406extern AVCodec msmpeg4v2_decoder;
407extern AVCodec msmpeg4v3_decoder;
e1a9dbff 408extern AVCodec wmv1_decoder;
0151a6f5 409extern AVCodec wmv2_decoder;
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410extern AVCodec mpeg_decoder;
411extern AVCodec h263i_decoder;
412extern AVCodec rv10_decoder;
be8ffec9 413extern AVCodec svq1_decoder;
4e66ab3b 414extern AVCodec mjpeg_decoder;
4b1f4f23 415extern AVCodec mp2_decoder;
a96b68b7 416extern AVCodec mp3_decoder;
de6d9b64 417
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418/* pcm codecs */
419#define PCM_CODEC(id, name) \
420extern AVCodec name ## _decoder; \
421extern AVCodec name ## _encoder;
422
423PCM_CODEC(CODEC_ID_PCM_S16LE, pcm_s16le);
424PCM_CODEC(CODEC_ID_PCM_S16BE, pcm_s16be);
425PCM_CODEC(CODEC_ID_PCM_U16LE, pcm_u16le);
426PCM_CODEC(CODEC_ID_PCM_U16BE, pcm_u16be);
427PCM_CODEC(CODEC_ID_PCM_S8, pcm_s8);
428PCM_CODEC(CODEC_ID_PCM_U8, pcm_u8);
429PCM_CODEC(CODEC_ID_PCM_ALAW, pcm_alaw);
430PCM_CODEC(CODEC_ID_PCM_MULAW, pcm_mulaw);
431
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432/* adpcm codecs */
433
434PCM_CODEC(CODEC_ID_ADPCM_IMA_QT, adpcm_ima_qt);
435PCM_CODEC(CODEC_ID_ADPCM_IMA_WAV, adpcm_ima_wav);
436PCM_CODEC(CODEC_ID_ADPCM_MS, adpcm_ms);
437
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438#undef PCM_CODEC
439
440/* dummy raw video codec */
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441extern AVCodec rawvideo_codec;
442
443/* the following codecs use external GPL libs */
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444extern AVCodec ac3_decoder;
445
446/* resample.c */
447
448struct ReSampleContext;
449
450typedef struct ReSampleContext ReSampleContext;
451
452ReSampleContext *audio_resample_init(int output_channels, int input_channels,
453 int output_rate, int input_rate);
454int audio_resample(ReSampleContext *s, short *output, short *input, int nb_samples);
455void audio_resample_close(ReSampleContext *s);
456
457/* YUV420 format is assumed ! */
458
459struct ImgReSampleContext;
460
461typedef struct ImgReSampleContext ImgReSampleContext;
462
463ImgReSampleContext *img_resample_init(int output_width, int output_height,
464 int input_width, int input_height);
465void img_resample(ImgReSampleContext *s,
466 AVPicture *output, AVPicture *input);
467
468void img_resample_close(ImgReSampleContext *s);
469
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470void avpicture_fill(AVPicture *picture, UINT8 *ptr,
471 int pix_fmt, int width, int height);
472int avpicture_get_size(int pix_fmt, int width, int height);
473
474/* convert among pixel formats */
475int img_convert(AVPicture *dst, int dst_pix_fmt,
476 AVPicture *src, int pix_fmt,
477 int width, int height);
478
479/* deinterlace a picture */
480int avpicture_deinterlace(AVPicture *dst, AVPicture *src,
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481 int pix_fmt, int width, int height);
482
483/* external high level API */
484
485extern AVCodec *first_avcodec;
486
156e5023 487/* returns LIBAVCODEC_VERSION_INT constant */
51a49663 488unsigned avcodec_version(void);
8bceb6af 489/* returns LIBAVCODEC_BUILD constant */
51a49663 490unsigned avcodec_build(void);
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491void avcodec_init(void);
492
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493void avcodec_set_bit_exact(void);
494
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495void register_avcodec(AVCodec *format);
496AVCodec *avcodec_find_encoder(enum CodecID id);
98f3b098 497AVCodec *avcodec_find_encoder_by_name(const char *name);
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498AVCodec *avcodec_find_decoder(enum CodecID id);
499AVCodec *avcodec_find_decoder_by_name(const char *name);
500void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode);
501
502int avcodec_open(AVCodecContext *avctx, AVCodec *codec);
503int avcodec_decode_audio(AVCodecContext *avctx, INT16 *samples,
504 int *frame_size_ptr,
505 UINT8 *buf, int buf_size);
506int avcodec_decode_video(AVCodecContext *avctx, AVPicture *picture,
507 int *got_picture_ptr,
508 UINT8 *buf, int buf_size);
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509int avcodec_parse_frame(AVCodecContext *avctx, UINT8 **pdata,
510 int *data_size_ptr,
511 UINT8 *buf, int buf_size);
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512int avcodec_encode_audio(AVCodecContext *avctx, UINT8 *buf, int buf_size,
513 const short *samples);
514int avcodec_encode_video(AVCodecContext *avctx, UINT8 *buf, int buf_size,
515 const AVPicture *pict);
516
517int avcodec_close(AVCodecContext *avctx);
518
519void avcodec_register_all(void);
a96b68b7 520
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521void avcodec_flush_buffers(AVCodecContext *avctx);
522
79e7b305 523#ifdef FF_POSTPROCESS
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524extern int quant_store[MBR+1][MBC+1]; // [Review]
525#endif
526
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527
528/**
529 * Interface for 0.5.0 version
530 *
531 * do not even think about it's usage for this moment
532 */
533
534typedef struct {
535 // compressed size used from given memory buffer
536 int size;
537 /// I/P/B frame type
538 int frame_type;
539} avc_enc_result_t;
540
541/**
542 * Commands
543 * order can't be changed - once it was defined
544 */
545typedef enum {
546 // general commands
547 AVC_OPEN_BY_NAME = 0xACA000,
548 AVC_OPEN_BY_CODEC_ID,
549 AVC_OPEN_BY_FOURCC,
550 AVC_CLOSE,
551
552 AVC_FLUSH,
553 // pin - struct { uint8_t* src, uint_t src_size }
554 // pout - struct { AVPicture* img, consumed_bytes,
555 AVC_DECODE,
556 // pin - struct { AVPicture* img, uint8_t* dest, uint_t dest_size }
557 // pout - uint_t used_from_dest_size
558 AVC_ENCODE,
559
560 // query/get video commands
561 AVC_GET_VERSION = 0xACB000,
562 AVC_GET_WIDTH,
563 AVC_GET_HEIGHT,
564 AVC_GET_DELAY,
565 AVC_GET_QUANT_TABLE,
566 // ...
567
568 // query/get audio commands
569 AVC_GET_FRAME_SIZE = 0xABC000,
570
571 // maybe define some simple structure which
572 // might be passed to the user - but they can't
573 // contain any codec specific parts and these
574 // calls are usualy necessary only few times
575
576 // set video commands
577 AVC_SET_WIDTH = 0xACD000,
578 AVC_SET_HEIGHT,
579
580 // set video encoding commands
581 AVC_SET_FRAME_RATE = 0xACD800,
582 AVC_SET_QUALITY,
583 AVC_SET_HURRY_UP,
584
585 // set audio commands
586 AVC_SET_SAMPLE_RATE = 0xACE000,
587 AVC_SET_CHANNELS,
588
589} avc_cmd_t;
590
591/**
592 * \param handle allocated private structure by libavcodec
593 * for initialization pass NULL - will be returned pout
594 * user is supposed to know nothing about its structure
595 * \param cmd type of operation to be performed
596 * \param pint input parameter
597 * \param pout output parameter
598 *
599 * \returns command status - eventually for query command it might return
600 * integer resulting value
601 */
602int avcodec(void* handle, avc_cmd_t cmd, void* pin, void* pout);
603
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604/* memory */
605void *av_malloc(int size);
606void *av_mallocz(int size);
607void av_free(void *ptr);
608void __av_freep(void **ptr);
609#define av_freep(p) __av_freep((void **)(p))
610
a96b68b7 611#endif /* AVCODEC_H */