Change abort() calls to av_abort() calls.
[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,
81e0d0b4 18 CODEC_ID_VORBIS,
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19 CODEC_ID_AC3,
20 CODEC_ID_MJPEG,
bf89e6b1 21 CODEC_ID_MPEG4,
de6d9b64 22 CODEC_ID_RAWVIDEO,
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23 CODEC_ID_MSMPEG4V1,
24 CODEC_ID_MSMPEG4V2,
25 CODEC_ID_MSMPEG4V3,
e1a9dbff 26 CODEC_ID_WMV1,
b50eef3a 27 CODEC_ID_WMV2,
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28 CODEC_ID_H263P,
29 CODEC_ID_H263I,
be8ffec9 30 CODEC_ID_SVQ1,
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31
32 /* various pcm "codecs" */
33 CODEC_ID_PCM_S16LE,
34 CODEC_ID_PCM_S16BE,
35 CODEC_ID_PCM_U16LE,
36 CODEC_ID_PCM_U16BE,
37 CODEC_ID_PCM_S8,
38 CODEC_ID_PCM_U8,
39 CODEC_ID_PCM_MULAW,
40 CODEC_ID_PCM_ALAW,
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41
42 /* various adpcm codecs */
43 CODEC_ID_ADPCM_IMA_QT,
44 CODEC_ID_ADPCM_IMA_WAV,
45 CODEC_ID_ADPCM_MS,
de6d9b64 46};
84afee34 47#define CODEC_ID_MSMPEG4 CODEC_ID_MSMPEG4V3
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48
49enum CodecType {
4a663d80 50 CODEC_TYPE_UNKNOWN = -1,
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51 CODEC_TYPE_VIDEO,
52 CODEC_TYPE_AUDIO,
53};
54
55enum PixelFormat {
9f862d11 56 PIX_FMT_ANY = -1,
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57 PIX_FMT_YUV420P,
58 PIX_FMT_YUV422,
59 PIX_FMT_RGB24,
60 PIX_FMT_BGR24,
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61 PIX_FMT_YUV422P,
62 PIX_FMT_YUV444P,
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63 PIX_FMT_RGBA32,
64 PIX_FMT_BGRA32,
be8ffec9 65 PIX_FMT_YUV410P
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66};
67
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68/* currently unused, may be used if 24/32 bits samples ever supported */
69enum SampleFormat {
70 SAMPLE_FMT_S16 = 0, /* signed 16 bits */
71};
72
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73/* in bytes */
74#define AVCODEC_MAX_AUDIO_FRAME_SIZE 18432
75
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76/* motion estimation type, EPZS by default */
77enum Motion_Est_ID {
101bea5f 78 ME_ZERO = 1,
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79 ME_FULL,
80 ME_LOG,
81 ME_PHODS,
82 ME_EPZS,
83 ME_X1
84};
85
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86typedef struct RcOverride{
87 int start_frame;
88 int end_frame;
89 int qscale; // if this is 0 then quality_factor will be used instead
90 float quality_factor;
91} RcOverride;
92
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93/* only for ME compatiblity with old apps */
94extern int motion_estimation_method;
95
e4986da9 96/* ME algos sorted by quality */
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97static const int Motion_Est_QTab[] = { ME_ZERO, ME_PHODS, ME_LOG,
98 ME_X1, ME_EPZS, ME_FULL };
de6d9b64 99
28db7fce 100
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101#define FF_MAX_B_FRAMES 4
102
de6d9b64 103/* encoding support */
ba6802de 104/* note not everything is supported yet */
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105
106#define CODEC_FLAG_HQ 0x0001 /* high quality (non real time) encoding */
107#define CODEC_FLAG_QSCALE 0x0002 /* use fixed qscale */
ba6802de 108#define CODEC_FLAG_4MV 0x0004 /* 4 MV per MB allowed */
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109#define CODEC_FLAG_QPEL 0x0010 /* use qpel MC */
110#define CODEC_FLAG_GMC 0x0020 /* use GMC */
60e575ac 111#define CODEC_FLAG_TYPE 0x0040 /* fixed I/P frame type, from avctx->key_frame */
1f6b6e50 112#define CODEC_FLAG_PART 0x0080 /* use data partitioning */
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113/* parent program gurantees that the input for b-frame containing streams is not written to
114 for at least s->max_b_frames+1 frames, if this is not set than the input will be copied */
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115#define CODEC_FLAG_INPUT_PRESERVED 0x0100
116#define CODEC_FLAG_PASS1 0x0200 /* use internal 2pass ratecontrol in first pass mode */
117#define CODEC_FLAG_PASS2 0x0400 /* use internal 2pass ratecontrol in second pass mode */
e84c31dc 118#define CODEC_FLAG_EXTERN_HUFF 0x1000 /* use external huffman table (for mjpeg) */
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119#define CODEC_FLAG_GRAY 0x2000 /* only decode/encode grayscale */
120#define CODEC_FLAG_EMU_EDGE 0x4000/* dont draw edges */
121#define CODEC_FLAG_DR1 0x8000 /* dr1 */
14207b27 122#define CODEC_FLAG_NOT_TRUNCATED 0x00010000 /* input bitstream is not truncated, except before a startcode */
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123/* codec capabilities */
124
125/* decoder can use draw_horiz_band callback */
126#define CODEC_CAP_DRAW_HORIZ_BAND 0x0001
93a21abd 127#define CODEC_CAP_DR1 0x0002 /* direct rendering method 1 */
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128/* if 'parse_only' field is true, then avcodec_parse_frame() can be
129 used */
130#define CODEC_CAP_PARSE_ONLY 0x0004
bf89e6b1 131
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132#define FRAME_RATE_BASE 10000
133
134typedef struct AVCodecContext {
135 int bit_rate;
9cdd6a24 136 int bit_rate_tolerance; /* amount of +- bits (>0)*/
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137 int flags;
138 int sub_id; /* some codecs needs additionnal format info. It is
139 stored there */
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140
141 int me_method; /* ME algorithm used for video coding */
142
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143 /* extra data from parent application to codec, e.g. huffman table
144 for mjpeg */
145 /* the parent should allocate and free this buffer */
146 void *extradata;
147 int extradata_size;
148
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149 /* video only */
150 int frame_rate; /* frames per sec multiplied by FRAME_RATE_BASE */
151 int width, height;
11ce8834 152 int aspect_ratio_info;
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153#define FF_ASPECT_SQUARE 1
154#define FF_ASPECT_4_3_625 2
155#define FF_ASPECT_4_3_525 3
156#define FF_ASPECT_16_9_625 4
157#define FF_ASPECT_16_9_525 5
e769f053 158#define FF_ASPECT_EXTENDED 15
de6d9b64 159 int gop_size; /* 0 = intra only */
bc657ac3 160 enum PixelFormat pix_fmt; /* pixel format, see PIX_FMT_xxx */
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161 int repeat_pict; /* when decoding, this signal how much the picture */
162 /* must be delayed. */
163 /* extra_delay = (repeat_pict / 2) * (1/fps) */
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164 /* if non NULL, 'draw_horiz_band' is called by the libavcodec
165 decoder to draw an horizontal band. It improve cache usage. Not
166 all codecs can do that. You must check the codec capabilities
167 before */
168 void (*draw_horiz_band)(struct AVCodecContext *s,
169 UINT8 **src_ptr, int linesize,
170 int y, int width, int height);
171
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172 /* audio only */
173 int sample_rate; /* samples per sec */
174 int channels;
a96b68b7 175 int sample_fmt; /* sample format, currenly unused */
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176
177 /* the following data should not be initialized */
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178 int frame_size; /* in samples, initialized when calling 'init' */
179 int frame_number; /* audio or video frame number */
180 int real_pict_num; /* returns the real picture number of
181 previous encoded frame */
182 int key_frame; /* true if the previous compressed frame was
183 a key frame (intra, or seekable) */
184 int pict_type; /* picture type of the previous
208d3ddf 185 en/decoded frame */
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186/* FIXME: these should have FF_ */
187#define I_TYPE 1 // Intra
188#define P_TYPE 2 // Predicted
189#define B_TYPE 3 // Bi-dir predicted
190#define S_TYPE 4 // S(GMC)-VOP MPEG4
191
192 int delay; /* number of frames the decoded output
193 will be delayed relative to the encoded input */
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194 uint8_t *mbskip_table; /* =1 if MB didnt change, is only valid for I/P frames
195 stride= mb_width = (width+15)>>4 */
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196
197 /* encoding parameters */
de6d9b64 198 int quality; /* quality of the previous encoded frame
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199 (between 1 (good) and 31 (bad))
200 this is allso used to set the quality in vbr mode
201 and the per frame quality in CODEC_FLAG_TYPE (second pass mode) */
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202 float qcompress; /* amount of qscale change between easy & hard scenes (0.0-1.0)*/
203 float qblur; /* amount of qscale smoothing over time (0.0-1.0) */
204 int qmin; /* min qscale */
205 int qmax; /* max qscale */
206 int max_qdiff; /* max qscale difference between frames */
9dbcbd92 207 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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208 float b_quant_factor;/* qscale factor between ps and b frames */
209 int rc_strategy; /* obsolete FIXME remove */
8b4c7dbc 210 int b_frame_strategy;
9dbcbd92 211
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212 int hurry_up; /* when set to 1 during decoding, b frames will be skiped
213 when set to 2 idct/dequant will be skipped too */
214
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215 struct AVCodec *codec;
216 void *priv_data;
217
644d98a4 218 /* The following data is for RTP friendly coding */
1f6b6e50 219 /* By now only H.263/H.263+/MPEG4 coder honours this */
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220 int rtp_mode; /* 1 for activate RTP friendly-mode */
221 /* highers numbers represent more error-prone */
222 /* enviroments, by now just "1" exist */
223
224 int rtp_payload_size; /* The size of the RTP payload, the coder will */
225 /* do it's best to deliver a chunk with size */
226 /* below rtp_payload_size, the chunk will start */
227 /* with a start code on some codecs like H.263 */
228 /* This doesn't take account of any particular */
229 /* headers inside the transmited RTP payload */
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230
231
232 /* The RTP callcack: This function is called */
233 /* every time the encoder as a packet to send */
234 /* Depends on the encoder if the data starts */
235 /* with a Start Code (it should) H.263 does */
236 void (*rtp_callback)(void *data, int size, int packet_number);
237
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238 /* These are for PSNR calculation, if you set get_psnr to 1 */
239 /* after encoding you will have the PSNR on psnr_y/cb/cr */
240 int get_psnr;
241 float psnr_y;
242 float psnr_cb;
243 float psnr_cr;
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244
245 /* statistics, used for 2-pass encoding */
246 int mv_bits;
247 int header_bits;
248 int i_tex_bits;
249 int p_tex_bits;
250 int i_count;
251 int p_count;
252 int skip_count;
253 int misc_bits; // cbp, mb_type
254 int frame_bits;
644d98a4 255
de6d9b64 256 /* the following fields are ignored */
bf89e6b1 257 void *opaque; /* can be used to carry app specific stuff */
de6d9b64 258 char codec_name[32];
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259 enum CodecType codec_type; /* see CODEC_TYPE_xxx */
260 enum CodecID codec_id; /* see CODEC_ID_xxx */
de6d9b64 261 unsigned int codec_tag; /* codec tag, only used if unknown codec */
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262
263 int workaround_bugs; /* workaround bugs in encoders which cannot be detected automatically */
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264 int luma_elim_threshold;
265 int chroma_elim_threshold;
266 int strict_std_compliance; /* strictly follow the std (MPEG4, ...) */
267 float b_quant_offset;/* qscale offset between ips and b frames, not implemented yet */
268 int error_resilience;
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269
270#ifndef MBC
271#define MBC 128
272#define MBR 96
273#endif
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274#define QP_TYPE int //FIXME note xxx this might be changed to int8_t
275
276 QP_TYPE *quant_store; /* field for communicating with external postprocessing */
93a21abd 277
917e06c8 278 unsigned qstride;
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279 uint8_t *dr_buffer[3];
280 int dr_stride;
281 void *dr_opaque_frame;
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282 void (*get_buffer_callback)(struct AVCodecContext *c, int width, int height, int pict_type);
283
284 int has_b_frames; // is 1 if the decoded stream contains b frames
285 int dr_uvstride;
286 int dr_ip_buffer_count;
0147f198 287 int block_align; /* currently only for adpcm codec in wav/avi */
ce980a95 288
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289 int parse_only; /* decoding only: if true, only parsing is done
290 (function avcodec_parse_frame()). The frame
291 data is returned. Only MPEG codecs support this now. */
ce980a95 292
87f8cab4 293 int mpeg_quant; /* 0-> h263 quant 1-> mpeg quant */
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294
295 char *stats_out; /* encoding statistics output buffer */
296 char *stats_in; /* encoding statistics input buffer (concatenated stuff from stats_out of pass1 should be placed here)*/
297 float rc_qsquish;
298 float rc_qmod_amp;
299 int rc_qmod_freq;
300 RcOverride *rc_override;
301 int rc_override_count;
302 char *rc_eq;
303 int rc_max_rate;
304 int rc_min_rate;
305 int rc_buffer_size;
306 float rc_buffer_aggressivity;
307 float i_quant_factor;/* qscale factor between i and p frames */
308 float i_quant_offset;/* qscale offset between i and p frames */
309 float rc_initial_cplx;
917e06c8 310
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311 int aspected_width;
312 int aspected_height;
313
28db7fce 314 int dct_algo;
c7e07931 315#define FF_DCT_AUTO 0
28db7fce 316#define FF_DCT_FASTINT 1
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317#define FF_DCT_INT 2
318#define FF_DCT_MMX 3
319#define FF_DCT_MLIB 4
28db7fce 320
1f6b6e50 321 //FIXME this should be reordered after kabis API is finished ...
ce980a95 322 //TODO kill kabi
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323 /*
324 Note: Below are located reserved fields for further usage
325 It requires for ABI !!!
326 If you'll perform some changes then borrow new space from these fields
327 (void * can be safety replaced with struct * ;)
328 P L E A S E ! ! !
329 IMPORTANT: Never change order of already declared fields!!!
330 */
331 unsigned long long int
332 ull_res0,ull_res1,ull_res2,ull_res3,ull_res4,ull_res5,
333 ull_res6,ull_res7,ull_res8,ull_res9,ull_res10,ull_res11,ull_res12;
334 float
335 flt_res0,flt_res1,flt_res2,flt_res3,flt_res4,flt_res5,
ce980a95 336 flt_res6,flt_res7,flt_res8,flt_res9,flt_res10,flt_res11,flt_res12;
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337 void
338 *ptr_res0,*ptr_res1,*ptr_res2,*ptr_res3,*ptr_res4,*ptr_res5,
ce980a95 339 *ptr_res6,*ptr_res7,*ptr_res8,*ptr_res9,*ptr_res10,*ptr_res11,*ptr_res12;
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340 unsigned long int
341 ul_res0,ul_res1,ul_res2,ul_res3,ul_res4,ul_res5,
342 ul_res6,ul_res7,ul_res8,ul_res9,ul_res10,ul_res11,ul_res12;
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343 unsigned short int
344 us_res0,us_res1,us_res2,us_res3,us_res4,us_res5,
345 us_res6,us_res7,us_res8,us_res9,us_res10,us_res11,us_res12;
346 unsigned char
347 uc_res0,uc_res1,uc_res2,uc_res3,uc_res4,uc_res5,
0fd90455 348 uc_res6,uc_res7,uc_res8,uc_res9,uc_res10,uc_res11,uc_res12;
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349 unsigned int
350 ui_res0,ui_res1,ui_res2,ui_res3,ui_res4,ui_res5,ui_res6,ui_res7,ui_res8,ui_res9,
28db7fce 351 ui_res10,ui_res11,ui_res12,ui_res13,ui_res14,ui_res15,ui_res16;
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352} AVCodecContext;
353
354typedef struct AVCodec {
355 char *name;
356 int type;
357 int id;
358 int priv_data_size;
359 int (*init)(AVCodecContext *);
360 int (*encode)(AVCodecContext *, UINT8 *buf, int buf_size, void *data);
361 int (*close)(AVCodecContext *);
0fd90455 362 int (*decode)(AVCodecContext *, void *outdata, int *outdata_size,
de6d9b64 363 UINT8 *buf, int buf_size);
bf89e6b1 364 int capabilities;
de6d9b64 365 struct AVCodec *next;
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366 /*
367 Note: Below are located reserved fields for further usage
368 It requires for ABI !!!
369 If you'll perform some changes then borrow new space from these fields
370 (void * can be safety replaced with struct * ;)
371 P L E A S E ! ! !
372 IMPORTANT: Never change order of already declared fields!!!
373 */
374 unsigned long long int
375 ull_res0,ull_res1,ull_res2,ull_res3,ull_res4,ull_res5,
376 ull_res6,ull_res7,ull_res8,ull_res9,ull_res10,ull_res11,ull_res12;
377 float
378 flt_res0,flt_res1,flt_res2,flt_res3,flt_res4,flt_res5,
379 flt_res6,flt_res7,flt_res8,flt_res9,flt_res10,flt_res11,flt_res12;
380 void
381 *ptr_res0,*ptr_res1,*ptr_res2,*ptr_res3,*ptr_res4,*ptr_res5,
382 *ptr_res6,*ptr_res7,*ptr_res8,*ptr_res9,*ptr_res10,*ptr_res11,*ptr_res12;
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383} AVCodec;
384
385/* three components are given, that's all */
386typedef struct AVPicture {
387 UINT8 *data[3];
388 int linesize[3];
389} AVPicture;
390
391extern AVCodec ac3_encoder;
392extern AVCodec mp2_encoder;
9d36bdc9 393extern AVCodec mp3lame_encoder;
81e0d0b4 394extern AVCodec oggvorbis_encoder;
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395extern AVCodec mpeg1video_encoder;
396extern AVCodec h263_encoder;
397extern AVCodec h263p_encoder;
398extern AVCodec rv10_encoder;
399extern AVCodec mjpeg_encoder;
bf89e6b1 400extern AVCodec mpeg4_encoder;
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401extern AVCodec msmpeg4v1_encoder;
402extern AVCodec msmpeg4v2_encoder;
403extern AVCodec msmpeg4v3_encoder;
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404extern AVCodec wmv1_encoder;
405extern AVCodec wmv2_encoder;
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406
407extern AVCodec h263_decoder;
bf89e6b1 408extern AVCodec mpeg4_decoder;
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409extern AVCodec msmpeg4v1_decoder;
410extern AVCodec msmpeg4v2_decoder;
411extern AVCodec msmpeg4v3_decoder;
e1a9dbff 412extern AVCodec wmv1_decoder;
0151a6f5 413extern AVCodec wmv2_decoder;
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414extern AVCodec mpeg_decoder;
415extern AVCodec h263i_decoder;
416extern AVCodec rv10_decoder;
be8ffec9 417extern AVCodec svq1_decoder;
4e66ab3b 418extern AVCodec mjpeg_decoder;
4b1f4f23 419extern AVCodec mp2_decoder;
a96b68b7 420extern AVCodec mp3_decoder;
de6d9b64 421
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422/* pcm codecs */
423#define PCM_CODEC(id, name) \
424extern AVCodec name ## _decoder; \
425extern AVCodec name ## _encoder;
426
427PCM_CODEC(CODEC_ID_PCM_S16LE, pcm_s16le);
428PCM_CODEC(CODEC_ID_PCM_S16BE, pcm_s16be);
429PCM_CODEC(CODEC_ID_PCM_U16LE, pcm_u16le);
430PCM_CODEC(CODEC_ID_PCM_U16BE, pcm_u16be);
431PCM_CODEC(CODEC_ID_PCM_S8, pcm_s8);
432PCM_CODEC(CODEC_ID_PCM_U8, pcm_u8);
433PCM_CODEC(CODEC_ID_PCM_ALAW, pcm_alaw);
434PCM_CODEC(CODEC_ID_PCM_MULAW, pcm_mulaw);
435
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436/* adpcm codecs */
437
438PCM_CODEC(CODEC_ID_ADPCM_IMA_QT, adpcm_ima_qt);
439PCM_CODEC(CODEC_ID_ADPCM_IMA_WAV, adpcm_ima_wav);
440PCM_CODEC(CODEC_ID_ADPCM_MS, adpcm_ms);
441
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442#undef PCM_CODEC
443
444/* dummy raw video codec */
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445extern AVCodec rawvideo_codec;
446
447/* the following codecs use external GPL libs */
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448extern AVCodec ac3_decoder;
449
450/* resample.c */
451
452struct ReSampleContext;
453
454typedef struct ReSampleContext ReSampleContext;
455
456ReSampleContext *audio_resample_init(int output_channels, int input_channels,
457 int output_rate, int input_rate);
458int audio_resample(ReSampleContext *s, short *output, short *input, int nb_samples);
459void audio_resample_close(ReSampleContext *s);
460
461/* YUV420 format is assumed ! */
462
463struct ImgReSampleContext;
464
465typedef struct ImgReSampleContext ImgReSampleContext;
466
467ImgReSampleContext *img_resample_init(int output_width, int output_height,
468 int input_width, int input_height);
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469
470ImgReSampleContext *img_resample_full_init(int owidth, int oheight,
471 int iwidth, int iheight,
472 int topBand, int bottomBand,
473 int leftBand, int rightBand);
474
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475void img_resample(ImgReSampleContext *s,
476 AVPicture *output, AVPicture *input);
477
478void img_resample_close(ImgReSampleContext *s);
479
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480void avpicture_fill(AVPicture *picture, UINT8 *ptr,
481 int pix_fmt, int width, int height);
482int avpicture_get_size(int pix_fmt, int width, int height);
483
484/* convert among pixel formats */
485int img_convert(AVPicture *dst, int dst_pix_fmt,
486 AVPicture *src, int pix_fmt,
487 int width, int height);
488
489/* deinterlace a picture */
490int avpicture_deinterlace(AVPicture *dst, AVPicture *src,
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491 int pix_fmt, int width, int height);
492
493/* external high level API */
494
495extern AVCodec *first_avcodec;
496
156e5023 497/* returns LIBAVCODEC_VERSION_INT constant */
51a49663 498unsigned avcodec_version(void);
8bceb6af 499/* returns LIBAVCODEC_BUILD constant */
51a49663 500unsigned avcodec_build(void);
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501void avcodec_init(void);
502
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503void avcodec_set_bit_exact(void);
504
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505void register_avcodec(AVCodec *format);
506AVCodec *avcodec_find_encoder(enum CodecID id);
98f3b098 507AVCodec *avcodec_find_encoder_by_name(const char *name);
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508AVCodec *avcodec_find_decoder(enum CodecID id);
509AVCodec *avcodec_find_decoder_by_name(const char *name);
510void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode);
511
512int avcodec_open(AVCodecContext *avctx, AVCodec *codec);
513int avcodec_decode_audio(AVCodecContext *avctx, INT16 *samples,
514 int *frame_size_ptr,
515 UINT8 *buf, int buf_size);
516int avcodec_decode_video(AVCodecContext *avctx, AVPicture *picture,
517 int *got_picture_ptr,
518 UINT8 *buf, int buf_size);
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519int avcodec_parse_frame(AVCodecContext *avctx, UINT8 **pdata,
520 int *data_size_ptr,
521 UINT8 *buf, int buf_size);
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522int avcodec_encode_audio(AVCodecContext *avctx, UINT8 *buf, int buf_size,
523 const short *samples);
524int avcodec_encode_video(AVCodecContext *avctx, UINT8 *buf, int buf_size,
525 const AVPicture *pict);
526
527int avcodec_close(AVCodecContext *avctx);
528
529void avcodec_register_all(void);
a96b68b7 530
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531void avcodec_flush_buffers(AVCodecContext *avctx);
532
79e7b305 533#ifdef FF_POSTPROCESS
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534extern int quant_store[MBR+1][MBC+1]; // [Review]
535#endif
536
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537
538/**
539 * Interface for 0.5.0 version
540 *
541 * do not even think about it's usage for this moment
542 */
543
544typedef struct {
545 // compressed size used from given memory buffer
546 int size;
547 /// I/P/B frame type
548 int frame_type;
549} avc_enc_result_t;
550
551/**
552 * Commands
553 * order can't be changed - once it was defined
554 */
555typedef enum {
556 // general commands
557 AVC_OPEN_BY_NAME = 0xACA000,
558 AVC_OPEN_BY_CODEC_ID,
559 AVC_OPEN_BY_FOURCC,
560 AVC_CLOSE,
561
562 AVC_FLUSH,
563 // pin - struct { uint8_t* src, uint_t src_size }
564 // pout - struct { AVPicture* img, consumed_bytes,
565 AVC_DECODE,
566 // pin - struct { AVPicture* img, uint8_t* dest, uint_t dest_size }
567 // pout - uint_t used_from_dest_size
568 AVC_ENCODE,
569
570 // query/get video commands
571 AVC_GET_VERSION = 0xACB000,
572 AVC_GET_WIDTH,
573 AVC_GET_HEIGHT,
574 AVC_GET_DELAY,
575 AVC_GET_QUANT_TABLE,
576 // ...
577
578 // query/get audio commands
579 AVC_GET_FRAME_SIZE = 0xABC000,
580
581 // maybe define some simple structure which
582 // might be passed to the user - but they can't
583 // contain any codec specific parts and these
584 // calls are usualy necessary only few times
585
586 // set video commands
587 AVC_SET_WIDTH = 0xACD000,
588 AVC_SET_HEIGHT,
589
590 // set video encoding commands
591 AVC_SET_FRAME_RATE = 0xACD800,
592 AVC_SET_QUALITY,
593 AVC_SET_HURRY_UP,
594
595 // set audio commands
596 AVC_SET_SAMPLE_RATE = 0xACE000,
597 AVC_SET_CHANNELS,
598
599} avc_cmd_t;
600
601/**
602 * \param handle allocated private structure by libavcodec
603 * for initialization pass NULL - will be returned pout
604 * user is supposed to know nothing about its structure
605 * \param cmd type of operation to be performed
606 * \param pint input parameter
607 * \param pout output parameter
608 *
609 * \returns command status - eventually for query command it might return
610 * integer resulting value
611 */
612int avcodec(void* handle, avc_cmd_t cmd, void* pin, void* pout);
613
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614/* memory */
615void *av_malloc(int size);
616void *av_mallocz(int size);
617void av_free(void *ptr);
618void __av_freep(void **ptr);
619#define av_freep(p) __av_freep((void **)(p))
620
a96b68b7 621#endif /* AVCODEC_H */