* Remove -finline-limit=8000 (not supported by gcc 2.95)
[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 4624
9#define LIBAVCODEC_BUILD_STR "4624"
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
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103/* encoding support
104 these flags can be passed in AVCodecContext.flags before initing
105 Note: note not everything is supported yet
106*/
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107
108#define CODEC_FLAG_HQ 0x0001 /* high quality (non real time) encoding */
109#define CODEC_FLAG_QSCALE 0x0002 /* use fixed qscale */
ba6802de 110#define CODEC_FLAG_4MV 0x0004 /* 4 MV per MB allowed */
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111#define CODEC_FLAG_QPEL 0x0010 /* use qpel MC */
112#define CODEC_FLAG_GMC 0x0020 /* use GMC */
60e575ac 113#define CODEC_FLAG_TYPE 0x0040 /* fixed I/P frame type, from avctx->key_frame */
1f6b6e50 114#define CODEC_FLAG_PART 0x0080 /* use data partitioning */
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115/* parent program gurantees that the input for b-frame containing streams is not written to
116 for at least s->max_b_frames+1 frames, if this is not set than the input will be copied */
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117#define CODEC_FLAG_INPUT_PRESERVED 0x0100
118#define CODEC_FLAG_PASS1 0x0200 /* use internal 2pass ratecontrol in first pass mode */
119#define CODEC_FLAG_PASS2 0x0400 /* use internal 2pass ratecontrol in second pass mode */
e84c31dc 120#define CODEC_FLAG_EXTERN_HUFF 0x1000 /* use external huffman table (for mjpeg) */
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121#define CODEC_FLAG_GRAY 0x2000 /* only decode/encode grayscale */
122#define CODEC_FLAG_EMU_EDGE 0x4000/* dont draw edges */
123#define CODEC_FLAG_DR1 0x8000 /* dr1 */
14207b27 124#define CODEC_FLAG_NOT_TRUNCATED 0x00010000 /* input bitstream is not truncated, except before a startcode */
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125/* codec capabilities */
126
127/* decoder can use draw_horiz_band callback */
128#define CODEC_CAP_DRAW_HORIZ_BAND 0x0001
93a21abd 129#define CODEC_CAP_DR1 0x0002 /* direct rendering method 1 */
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130/* if 'parse_only' field is true, then avcodec_parse_frame() can be
131 used */
132#define CODEC_CAP_PARSE_ONLY 0x0004
bf89e6b1 133
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134#define FRAME_RATE_BASE 10000
135
136typedef struct AVCodecContext {
137 int bit_rate;
9cdd6a24 138 int bit_rate_tolerance; /* amount of +- bits (>0)*/
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139 int flags;
140 int sub_id; /* some codecs needs additionnal format info. It is
141 stored there */
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142
143 int me_method; /* ME algorithm used for video coding */
144
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145 /* extra data from parent application to codec, e.g. huffman table
146 for mjpeg */
147 /* the parent should allocate and free this buffer */
148 void *extradata;
149 int extradata_size;
150
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151 /* video only */
152 int frame_rate; /* frames per sec multiplied by FRAME_RATE_BASE */
153 int width, height;
11ce8834 154 int aspect_ratio_info;
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155#define FF_ASPECT_SQUARE 1
156#define FF_ASPECT_4_3_625 2
157#define FF_ASPECT_4_3_525 3
158#define FF_ASPECT_16_9_625 4
159#define FF_ASPECT_16_9_525 5
e769f053 160#define FF_ASPECT_EXTENDED 15
de6d9b64 161 int gop_size; /* 0 = intra only */
bc657ac3 162 enum PixelFormat pix_fmt; /* pixel format, see PIX_FMT_xxx */
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163 int repeat_pict; /* when decoding, this signal how much the picture */
164 /* must be delayed. */
165 /* extra_delay = (repeat_pict / 2) * (1/fps) */
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166 /* if non NULL, 'draw_horiz_band' is called by the libavcodec
167 decoder to draw an horizontal band. It improve cache usage. Not
168 all codecs can do that. You must check the codec capabilities
169 before */
170 void (*draw_horiz_band)(struct AVCodecContext *s,
171 UINT8 **src_ptr, int linesize,
172 int y, int width, int height);
173
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174 /* audio only */
175 int sample_rate; /* samples per sec */
176 int channels;
a96b68b7 177 int sample_fmt; /* sample format, currenly unused */
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178
179 /* the following data should not be initialized */
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180 int frame_size; /* in samples, initialized when calling 'init' */
181 int frame_number; /* audio or video frame number */
182 int real_pict_num; /* returns the real picture number of
183 previous encoded frame */
184 int key_frame; /* true if the previous compressed frame was
185 a key frame (intra, or seekable) */
186 int pict_type; /* picture type of the previous
208d3ddf 187 en/decoded frame */
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188/* FIXME: these should have FF_ */
189#define I_TYPE 1 // Intra
190#define P_TYPE 2 // Predicted
191#define B_TYPE 3 // Bi-dir predicted
192#define S_TYPE 4 // S(GMC)-VOP MPEG4
193
194 int delay; /* number of frames the decoded output
195 will be delayed relative to the encoded input */
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196 uint8_t *mbskip_table; /* =1 if MB didnt change, is only valid for I/P frames
197 stride= mb_width = (width+15)>>4 */
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198
199 /* encoding parameters */
de6d9b64 200 int quality; /* quality of the previous encoded frame
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201 (between 1 (good) and 31 (bad))
202 this is allso used to set the quality in vbr mode
203 and the per frame quality in CODEC_FLAG_TYPE (second pass mode) */
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204 float qcompress; /* amount of qscale change between easy & hard scenes (0.0-1.0)*/
205 float qblur; /* amount of qscale smoothing over time (0.0-1.0) */
206 int qmin; /* min qscale */
207 int qmax; /* max qscale */
208 int max_qdiff; /* max qscale difference between frames */
9dbcbd92 209 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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210 float b_quant_factor;/* qscale factor between ps and b frames */
211 int rc_strategy; /* obsolete FIXME remove */
8b4c7dbc 212 int b_frame_strategy;
9dbcbd92 213
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214 int hurry_up; /* when set to 1 during decoding, b frames will be skiped
215 when set to 2 idct/dequant will be skipped too */
216
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217 struct AVCodec *codec;
218 void *priv_data;
219
644d98a4 220 /* The following data is for RTP friendly coding */
1f6b6e50 221 /* By now only H.263/H.263+/MPEG4 coder honours this */
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222 int rtp_mode; /* 1 for activate RTP friendly-mode */
223 /* highers numbers represent more error-prone */
224 /* enviroments, by now just "1" exist */
225
226 int rtp_payload_size; /* The size of the RTP payload, the coder will */
227 /* do it's best to deliver a chunk with size */
228 /* below rtp_payload_size, the chunk will start */
229 /* with a start code on some codecs like H.263 */
230 /* This doesn't take account of any particular */
231 /* headers inside the transmited RTP payload */
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232
233
234 /* The RTP callcack: This function is called */
235 /* every time the encoder as a packet to send */
236 /* Depends on the encoder if the data starts */
237 /* with a Start Code (it should) H.263 does */
238 void (*rtp_callback)(void *data, int size, int packet_number);
239
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240 /* These are for PSNR calculation, if you set get_psnr to 1 */
241 /* after encoding you will have the PSNR on psnr_y/cb/cr */
242 int get_psnr;
243 float psnr_y;
244 float psnr_cb;
245 float psnr_cr;
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246
247 /* statistics, used for 2-pass encoding */
248 int mv_bits;
249 int header_bits;
250 int i_tex_bits;
251 int p_tex_bits;
252 int i_count;
253 int p_count;
254 int skip_count;
255 int misc_bits; // cbp, mb_type
256 int frame_bits;
644d98a4 257
de6d9b64 258 /* the following fields are ignored */
bf89e6b1 259 void *opaque; /* can be used to carry app specific stuff */
de6d9b64 260 char codec_name[32];
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261 enum CodecType codec_type; /* see CODEC_TYPE_xxx */
262 enum CodecID codec_id; /* see CODEC_ID_xxx */
de6d9b64 263 unsigned int codec_tag; /* codec tag, only used if unknown codec */
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264
265 int workaround_bugs; /* workaround bugs in encoders which cannot be detected automatically */
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266 int luma_elim_threshold;
267 int chroma_elim_threshold;
268 int strict_std_compliance; /* strictly follow the std (MPEG4, ...) */
269 float b_quant_offset;/* qscale offset between ips and b frames, not implemented yet */
270 int error_resilience;
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271
272#ifndef MBC
273#define MBC 128
274#define MBR 96
275#endif
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276#define QP_TYPE int //FIXME note xxx this might be changed to int8_t
277
278 QP_TYPE *quant_store; /* field for communicating with external postprocessing */
93a21abd 279
917e06c8 280 unsigned qstride;
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281 uint8_t *dr_buffer[3];
282 int dr_stride;
283 void *dr_opaque_frame;
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284 void (*get_buffer_callback)(struct AVCodecContext *c, int width, int height, int pict_type);
285
286 int has_b_frames; // is 1 if the decoded stream contains b frames
287 int dr_uvstride;
288 int dr_ip_buffer_count;
0147f198 289 int block_align; /* currently only for adpcm codec in wav/avi */
ce980a95 290
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291 int parse_only; /* decoding only: if true, only parsing is done
292 (function avcodec_parse_frame()). The frame
293 data is returned. Only MPEG codecs support this now. */
ce980a95 294
87f8cab4 295 int mpeg_quant; /* 0-> h263 quant 1-> mpeg quant */
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296
297 char *stats_out; /* encoding statistics output buffer */
298 char *stats_in; /* encoding statistics input buffer (concatenated stuff from stats_out of pass1 should be placed here)*/
299 float rc_qsquish;
300 float rc_qmod_amp;
301 int rc_qmod_freq;
302 RcOverride *rc_override;
303 int rc_override_count;
304 char *rc_eq;
305 int rc_max_rate;
306 int rc_min_rate;
307 int rc_buffer_size;
308 float rc_buffer_aggressivity;
309 float i_quant_factor;/* qscale factor between i and p frames */
310 float i_quant_offset;/* qscale offset between i and p frames */
311 float rc_initial_cplx;
917e06c8 312
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313 int aspected_width;
314 int aspected_height;
315
28db7fce 316 int dct_algo;
c7e07931 317#define FF_DCT_AUTO 0
28db7fce 318#define FF_DCT_FASTINT 1
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319#define FF_DCT_INT 2
320#define FF_DCT_MMX 3
321#define FF_DCT_MLIB 4
28db7fce 322
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323 long long int pts; /* timestamp in micro seconds
324 for decoding: the timestamp from the stream or 0
325 for encoding: the timestamp which will be stored in the stream
326 if 0 then the frame_rate will be used */
327
1f6b6e50 328 //FIXME this should be reordered after kabis API is finished ...
ce980a95 329 //TODO kill kabi
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330 /*
331 Note: Below are located reserved fields for further usage
332 It requires for ABI !!!
333 If you'll perform some changes then borrow new space from these fields
334 (void * can be safety replaced with struct * ;)
335 P L E A S E ! ! !
336 IMPORTANT: Never change order of already declared fields!!!
337 */
338 unsigned long long int
339 ull_res0,ull_res1,ull_res2,ull_res3,ull_res4,ull_res5,
15415af4 340 ull_res6,ull_res7,ull_res8,ull_res9,ull_res10,ull_res11;
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341 float
342 flt_res0,flt_res1,flt_res2,flt_res3,flt_res4,flt_res5,
ce980a95 343 flt_res6,flt_res7,flt_res8,flt_res9,flt_res10,flt_res11,flt_res12;
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344 void
345 *ptr_res0,*ptr_res1,*ptr_res2,*ptr_res3,*ptr_res4,*ptr_res5,
ce980a95 346 *ptr_res6,*ptr_res7,*ptr_res8,*ptr_res9,*ptr_res10,*ptr_res11,*ptr_res12;
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347 unsigned long int
348 ul_res0,ul_res1,ul_res2,ul_res3,ul_res4,ul_res5,
349 ul_res6,ul_res7,ul_res8,ul_res9,ul_res10,ul_res11,ul_res12;
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350 unsigned short int
351 us_res0,us_res1,us_res2,us_res3,us_res4,us_res5,
352 us_res6,us_res7,us_res8,us_res9,us_res10,us_res11,us_res12;
353 unsigned char
354 uc_res0,uc_res1,uc_res2,uc_res3,uc_res4,uc_res5,
0fd90455 355 uc_res6,uc_res7,uc_res8,uc_res9,uc_res10,uc_res11,uc_res12;
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356 unsigned int
357 ui_res0,ui_res1,ui_res2,ui_res3,ui_res4,ui_res5,ui_res6,ui_res7,ui_res8,ui_res9,
28db7fce 358 ui_res10,ui_res11,ui_res12,ui_res13,ui_res14,ui_res15,ui_res16;
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359} AVCodecContext;
360
361typedef struct AVCodec {
362 char *name;
363 int type;
364 int id;
365 int priv_data_size;
366 int (*init)(AVCodecContext *);
367 int (*encode)(AVCodecContext *, UINT8 *buf, int buf_size, void *data);
368 int (*close)(AVCodecContext *);
0fd90455 369 int (*decode)(AVCodecContext *, void *outdata, int *outdata_size,
de6d9b64 370 UINT8 *buf, int buf_size);
bf89e6b1 371 int capabilities;
de6d9b64 372 struct AVCodec *next;
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373 /*
374 Note: Below are located reserved fields for further usage
375 It requires for ABI !!!
376 If you'll perform some changes then borrow new space from these fields
377 (void * can be safety replaced with struct * ;)
378 P L E A S E ! ! !
379 IMPORTANT: Never change order of already declared fields!!!
380 */
381 unsigned long long int
382 ull_res0,ull_res1,ull_res2,ull_res3,ull_res4,ull_res5,
383 ull_res6,ull_res7,ull_res8,ull_res9,ull_res10,ull_res11,ull_res12;
384 float
385 flt_res0,flt_res1,flt_res2,flt_res3,flt_res4,flt_res5,
386 flt_res6,flt_res7,flt_res8,flt_res9,flt_res10,flt_res11,flt_res12;
387 void
388 *ptr_res0,*ptr_res1,*ptr_res2,*ptr_res3,*ptr_res4,*ptr_res5,
389 *ptr_res6,*ptr_res7,*ptr_res8,*ptr_res9,*ptr_res10,*ptr_res11,*ptr_res12;
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390} AVCodec;
391
392/* three components are given, that's all */
393typedef struct AVPicture {
394 UINT8 *data[3];
395 int linesize[3];
396} AVPicture;
397
398extern AVCodec ac3_encoder;
399extern AVCodec mp2_encoder;
9d36bdc9 400extern AVCodec mp3lame_encoder;
81e0d0b4 401extern AVCodec oggvorbis_encoder;
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402extern AVCodec mpeg1video_encoder;
403extern AVCodec h263_encoder;
404extern AVCodec h263p_encoder;
405extern AVCodec rv10_encoder;
406extern AVCodec mjpeg_encoder;
bf89e6b1 407extern AVCodec mpeg4_encoder;
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408extern AVCodec msmpeg4v1_encoder;
409extern AVCodec msmpeg4v2_encoder;
410extern AVCodec msmpeg4v3_encoder;
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411extern AVCodec wmv1_encoder;
412extern AVCodec wmv2_encoder;
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413
414extern AVCodec h263_decoder;
bf89e6b1 415extern AVCodec mpeg4_decoder;
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416extern AVCodec msmpeg4v1_decoder;
417extern AVCodec msmpeg4v2_decoder;
418extern AVCodec msmpeg4v3_decoder;
e1a9dbff 419extern AVCodec wmv1_decoder;
0151a6f5 420extern AVCodec wmv2_decoder;
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421extern AVCodec mpeg_decoder;
422extern AVCodec h263i_decoder;
423extern AVCodec rv10_decoder;
be8ffec9 424extern AVCodec svq1_decoder;
4e66ab3b 425extern AVCodec mjpeg_decoder;
4b1f4f23 426extern AVCodec mp2_decoder;
a96b68b7 427extern AVCodec mp3_decoder;
de6d9b64 428
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429/* pcm codecs */
430#define PCM_CODEC(id, name) \
431extern AVCodec name ## _decoder; \
432extern AVCodec name ## _encoder;
433
434PCM_CODEC(CODEC_ID_PCM_S16LE, pcm_s16le);
435PCM_CODEC(CODEC_ID_PCM_S16BE, pcm_s16be);
436PCM_CODEC(CODEC_ID_PCM_U16LE, pcm_u16le);
437PCM_CODEC(CODEC_ID_PCM_U16BE, pcm_u16be);
438PCM_CODEC(CODEC_ID_PCM_S8, pcm_s8);
439PCM_CODEC(CODEC_ID_PCM_U8, pcm_u8);
440PCM_CODEC(CODEC_ID_PCM_ALAW, pcm_alaw);
441PCM_CODEC(CODEC_ID_PCM_MULAW, pcm_mulaw);
442
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443/* adpcm codecs */
444
445PCM_CODEC(CODEC_ID_ADPCM_IMA_QT, adpcm_ima_qt);
446PCM_CODEC(CODEC_ID_ADPCM_IMA_WAV, adpcm_ima_wav);
447PCM_CODEC(CODEC_ID_ADPCM_MS, adpcm_ms);
448
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449#undef PCM_CODEC
450
451/* dummy raw video codec */
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452extern AVCodec rawvideo_codec;
453
454/* the following codecs use external GPL libs */
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455extern AVCodec ac3_decoder;
456
457/* resample.c */
458
459struct ReSampleContext;
460
461typedef struct ReSampleContext ReSampleContext;
462
463ReSampleContext *audio_resample_init(int output_channels, int input_channels,
464 int output_rate, int input_rate);
465int audio_resample(ReSampleContext *s, short *output, short *input, int nb_samples);
466void audio_resample_close(ReSampleContext *s);
467
468/* YUV420 format is assumed ! */
469
470struct ImgReSampleContext;
471
472typedef struct ImgReSampleContext ImgReSampleContext;
473
474ImgReSampleContext *img_resample_init(int output_width, int output_height,
475 int input_width, int input_height);
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476
477ImgReSampleContext *img_resample_full_init(int owidth, int oheight,
478 int iwidth, int iheight,
479 int topBand, int bottomBand,
480 int leftBand, int rightBand);
481
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482void img_resample(ImgReSampleContext *s,
483 AVPicture *output, AVPicture *input);
484
485void img_resample_close(ImgReSampleContext *s);
486
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487void avpicture_fill(AVPicture *picture, UINT8 *ptr,
488 int pix_fmt, int width, int height);
489int avpicture_get_size(int pix_fmt, int width, int height);
490
491/* convert among pixel formats */
492int img_convert(AVPicture *dst, int dst_pix_fmt,
493 AVPicture *src, int pix_fmt,
494 int width, int height);
495
496/* deinterlace a picture */
497int avpicture_deinterlace(AVPicture *dst, AVPicture *src,
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498 int pix_fmt, int width, int height);
499
500/* external high level API */
501
502extern AVCodec *first_avcodec;
503
156e5023 504/* returns LIBAVCODEC_VERSION_INT constant */
51a49663 505unsigned avcodec_version(void);
8bceb6af 506/* returns LIBAVCODEC_BUILD constant */
51a49663 507unsigned avcodec_build(void);
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508void avcodec_init(void);
509
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510void avcodec_set_bit_exact(void);
511
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512void register_avcodec(AVCodec *format);
513AVCodec *avcodec_find_encoder(enum CodecID id);
98f3b098 514AVCodec *avcodec_find_encoder_by_name(const char *name);
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515AVCodec *avcodec_find_decoder(enum CodecID id);
516AVCodec *avcodec_find_decoder_by_name(const char *name);
517void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode);
518
a949d72e 519AVCodecContext *avcodec_alloc_context();
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520int avcodec_open(AVCodecContext *avctx, AVCodec *codec);
521int avcodec_decode_audio(AVCodecContext *avctx, INT16 *samples,
522 int *frame_size_ptr,
523 UINT8 *buf, int buf_size);
524int avcodec_decode_video(AVCodecContext *avctx, AVPicture *picture,
525 int *got_picture_ptr,
526 UINT8 *buf, int buf_size);
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527int avcodec_parse_frame(AVCodecContext *avctx, UINT8 **pdata,
528 int *data_size_ptr,
529 UINT8 *buf, int buf_size);
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530int avcodec_encode_audio(AVCodecContext *avctx, UINT8 *buf, int buf_size,
531 const short *samples);
532int avcodec_encode_video(AVCodecContext *avctx, UINT8 *buf, int buf_size,
533 const AVPicture *pict);
534
535int avcodec_close(AVCodecContext *avctx);
536
537void avcodec_register_all(void);
a96b68b7 538
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539void avcodec_flush_buffers(AVCodecContext *avctx);
540
79e7b305 541#ifdef FF_POSTPROCESS
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542extern int quant_store[MBR+1][MBC+1]; // [Review]
543#endif
544
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545
546/**
547 * Interface for 0.5.0 version
548 *
549 * do not even think about it's usage for this moment
550 */
551
552typedef struct {
553 // compressed size used from given memory buffer
554 int size;
555 /// I/P/B frame type
556 int frame_type;
557} avc_enc_result_t;
558
559/**
560 * Commands
561 * order can't be changed - once it was defined
562 */
563typedef enum {
564 // general commands
565 AVC_OPEN_BY_NAME = 0xACA000,
566 AVC_OPEN_BY_CODEC_ID,
567 AVC_OPEN_BY_FOURCC,
568 AVC_CLOSE,
569
570 AVC_FLUSH,
571 // pin - struct { uint8_t* src, uint_t src_size }
572 // pout - struct { AVPicture* img, consumed_bytes,
573 AVC_DECODE,
574 // pin - struct { AVPicture* img, uint8_t* dest, uint_t dest_size }
575 // pout - uint_t used_from_dest_size
576 AVC_ENCODE,
577
578 // query/get video commands
579 AVC_GET_VERSION = 0xACB000,
580 AVC_GET_WIDTH,
581 AVC_GET_HEIGHT,
582 AVC_GET_DELAY,
583 AVC_GET_QUANT_TABLE,
584 // ...
585
586 // query/get audio commands
587 AVC_GET_FRAME_SIZE = 0xABC000,
588
589 // maybe define some simple structure which
590 // might be passed to the user - but they can't
591 // contain any codec specific parts and these
592 // calls are usualy necessary only few times
593
594 // set video commands
595 AVC_SET_WIDTH = 0xACD000,
596 AVC_SET_HEIGHT,
597
598 // set video encoding commands
599 AVC_SET_FRAME_RATE = 0xACD800,
600 AVC_SET_QUALITY,
601 AVC_SET_HURRY_UP,
602
603 // set audio commands
604 AVC_SET_SAMPLE_RATE = 0xACE000,
605 AVC_SET_CHANNELS,
606
607} avc_cmd_t;
608
609/**
610 * \param handle allocated private structure by libavcodec
611 * for initialization pass NULL - will be returned pout
612 * user is supposed to know nothing about its structure
613 * \param cmd type of operation to be performed
614 * \param pint input parameter
615 * \param pout output parameter
616 *
617 * \returns command status - eventually for query command it might return
618 * integer resulting value
619 */
620int avcodec(void* handle, avc_cmd_t cmd, void* pin, void* pout);
621
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622/* memory */
623void *av_malloc(int size);
624void *av_mallocz(int size);
625void av_free(void *ptr);
626void __av_freep(void **ptr);
627#define av_freep(p) __av_freep((void **)(p))
628
a96b68b7 629#endif /* AVCODEC_H */