added include for ffserver dynamically loaded modules
[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 4618
9#define LIBAVCODEC_BUILD_STR "4618"
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,
be8ffec9 62 PIX_FMT_YUV410P
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63};
64
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65/* currently unused, may be used if 24/32 bits samples ever supported */
66enum SampleFormat {
67 SAMPLE_FMT_S16 = 0, /* signed 16 bits */
68};
69
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70/* in bytes */
71#define AVCODEC_MAX_AUDIO_FRAME_SIZE 18432
72
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73/* motion estimation type, EPZS by default */
74enum Motion_Est_ID {
101bea5f 75 ME_ZERO = 1,
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76 ME_FULL,
77 ME_LOG,
78 ME_PHODS,
79 ME_EPZS,
80 ME_X1
81};
82
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83/* only for ME compatiblity with old apps */
84extern int motion_estimation_method;
85
e4986da9 86/* ME algos sorted by quality */
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87static const int Motion_Est_QTab[] = { ME_ZERO, ME_PHODS, ME_LOG,
88 ME_X1, ME_EPZS, ME_FULL };
de6d9b64 89
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90#define FF_MAX_B_FRAMES 4
91
de6d9b64 92/* encoding support */
ba6802de 93/* note not everything is supported yet */
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94
95#define CODEC_FLAG_HQ 0x0001 /* high quality (non real time) encoding */
96#define CODEC_FLAG_QSCALE 0x0002 /* use fixed qscale */
ba6802de 97#define CODEC_FLAG_4MV 0x0004 /* 4 MV per MB allowed */
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98#define CODEC_FLAG_QPEL 0x0010 /* use qpel MC */
99#define CODEC_FLAG_GMC 0x0020 /* use GMC */
60e575ac 100#define CODEC_FLAG_TYPE 0x0040 /* fixed I/P frame type, from avctx->key_frame */
1f6b6e50 101#define CODEC_FLAG_PART 0x0080 /* use data partitioning */
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102/* parent program gurantees that the input for b-frame containing streams is not written to
103 for at least s->max_b_frames+1 frames, if this is not set than the input will be copied */
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104#define CODEC_FLAG_INPUT_PRESERVED 0x0100
105#define CODEC_FLAG_PASS1 0x0200 /* use internal 2pass ratecontrol in first pass mode */
106#define CODEC_FLAG_PASS2 0x0400 /* use internal 2pass ratecontrol in second pass mode */
e84c31dc 107#define CODEC_FLAG_EXTERN_HUFF 0x1000 /* use external huffman table (for mjpeg) */
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108#define CODEC_FLAG_GRAY 0x2000 /* only decode/encode grayscale */
109#define CODEC_FLAG_EMU_EDGE 0x4000/* dont draw edges */
110#define CODEC_FLAG_DR1 0x8000 /* dr1 */
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111/* codec capabilities */
112
113/* decoder can use draw_horiz_band callback */
114#define CODEC_CAP_DRAW_HORIZ_BAND 0x0001
93a21abd 115#define CODEC_CAP_DR1 0x0002 /* direct rendering method 1 */
bf89e6b1 116
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117#define FRAME_RATE_BASE 10000
118
119typedef struct AVCodecContext {
120 int bit_rate;
9cdd6a24 121 int bit_rate_tolerance; /* amount of +- bits (>0)*/
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122 int flags;
123 int sub_id; /* some codecs needs additionnal format info. It is
124 stored there */
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125
126 int me_method; /* ME algorithm used for video coding */
127
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128 /* extra data from parent application to codec, e.g. huffman table
129 for mjpeg */
130 /* the parent should allocate and free this buffer */
131 void *extradata;
132 int extradata_size;
133
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134 /* video only */
135 int frame_rate; /* frames per sec multiplied by FRAME_RATE_BASE */
136 int width, height;
11ce8834 137 int aspect_ratio_info;
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138#define FF_ASPECT_SQUARE 1
139#define FF_ASPECT_4_3_625 2
140#define FF_ASPECT_4_3_525 3
141#define FF_ASPECT_16_9_625 4
142#define FF_ASPECT_16_9_525 5
de6d9b64 143 int gop_size; /* 0 = intra only */
bc657ac3 144 enum PixelFormat pix_fmt; /* pixel format, see PIX_FMT_xxx */
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145 int repeat_pict; /* when decoding, this signal how much the picture */
146 /* must be delayed. */
147 /* extra_delay = (repeat_pict / 2) * (1/fps) */
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148 /* if non NULL, 'draw_horiz_band' is called by the libavcodec
149 decoder to draw an horizontal band. It improve cache usage. Not
150 all codecs can do that. You must check the codec capabilities
151 before */
152 void (*draw_horiz_band)(struct AVCodecContext *s,
153 UINT8 **src_ptr, int linesize,
154 int y, int width, int height);
155
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156 /* audio only */
157 int sample_rate; /* samples per sec */
158 int channels;
a96b68b7 159 int sample_fmt; /* sample format, currenly unused */
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160
161 /* the following data should not be initialized */
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162 int frame_size; /* in samples, initialized when calling 'init' */
163 int frame_number; /* audio or video frame number */
164 int real_pict_num; /* returns the real picture number of
165 previous encoded frame */
166 int key_frame; /* true if the previous compressed frame was
167 a key frame (intra, or seekable) */
168 int pict_type; /* picture type of the previous
169 encoded frame */
170/* FIXME: these should have FF_ */
171#define I_TYPE 1 // Intra
172#define P_TYPE 2 // Predicted
173#define B_TYPE 3 // Bi-dir predicted
174#define S_TYPE 4 // S(GMC)-VOP MPEG4
175
176 int delay; /* number of frames the decoded output
177 will be delayed relative to the encoded input */
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178 uint8_t *mbskip_table; /* =1 if MB didnt change, is only valid for I/P frames
179 stride= mb_width = (width+15)>>4 */
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180
181 /* encoding parameters */
de6d9b64 182 int quality; /* quality of the previous encoded frame
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183 (between 1 (good) and 31 (bad))
184 this is allso used to set the quality in vbr mode
185 and the per frame quality in CODEC_FLAG_TYPE (second pass mode) */
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186 float qcompress; /* amount of qscale change between easy & hard scenes (0.0-1.0)*/
187 float qblur; /* amount of qscale smoothing over time (0.0-1.0) */
188 int qmin; /* min qscale */
189 int qmax; /* max qscale */
190 int max_qdiff; /* max qscale difference between frames */
9dbcbd92 191 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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192 float b_quant_factor;/* qscale factor between ips and b frames */
193 int rc_strategy;
194 int b_frame_strategy;
9dbcbd92 195
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196 int hurry_up; /* when set to 1 during decoding, b frames will be skiped
197 when set to 2 idct/dequant will be skipped too */
198
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199 struct AVCodec *codec;
200 void *priv_data;
201
644d98a4 202 /* The following data is for RTP friendly coding */
1f6b6e50 203 /* By now only H.263/H.263+/MPEG4 coder honours this */
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204 int rtp_mode; /* 1 for activate RTP friendly-mode */
205 /* highers numbers represent more error-prone */
206 /* enviroments, by now just "1" exist */
207
208 int rtp_payload_size; /* The size of the RTP payload, the coder will */
209 /* do it's best to deliver a chunk with size */
210 /* below rtp_payload_size, the chunk will start */
211 /* with a start code on some codecs like H.263 */
212 /* This doesn't take account of any particular */
213 /* headers inside the transmited RTP payload */
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214
215
216 /* The RTP callcack: This function is called */
217 /* every time the encoder as a packet to send */
218 /* Depends on the encoder if the data starts */
219 /* with a Start Code (it should) H.263 does */
220 void (*rtp_callback)(void *data, int size, int packet_number);
221
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222 /* These are for PSNR calculation, if you set get_psnr to 1 */
223 /* after encoding you will have the PSNR on psnr_y/cb/cr */
224 int get_psnr;
225 float psnr_y;
226 float psnr_cb;
227 float psnr_cr;
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228
229 /* statistics, used for 2-pass encoding */
230 int mv_bits;
231 int header_bits;
232 int i_tex_bits;
233 int p_tex_bits;
234 int i_count;
235 int p_count;
236 int skip_count;
237 int misc_bits; // cbp, mb_type
238 int frame_bits;
644d98a4 239
de6d9b64 240 /* the following fields are ignored */
bf89e6b1 241 void *opaque; /* can be used to carry app specific stuff */
de6d9b64 242 char codec_name[32];
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243 enum CodecType codec_type; /* see CODEC_TYPE_xxx */
244 enum CodecID codec_id; /* see CODEC_ID_xxx */
de6d9b64 245 unsigned int codec_tag; /* codec tag, only used if unknown codec */
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246
247 int workaround_bugs; /* workaround bugs in encoders which cannot be detected automatically */
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248 int luma_elim_threshold;
249 int chroma_elim_threshold;
250 int strict_std_compliance; /* strictly follow the std (MPEG4, ...) */
251 float b_quant_offset;/* qscale offset between ips and b frames, not implemented yet */
252 int error_resilience;
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253
254#ifndef MBC
255#define MBC 128
256#define MBR 96
257#endif
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258#define QP_TYPE int //FIXME note xxx this might be changed to int8_t
259
260 QP_TYPE *quant_store; /* field for communicating with external postprocessing */
8696b636 261 unsigned qstride;
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262
263 uint8_t *dr_buffer[3];
264 int dr_stride;
265 void *dr_opaque_frame;
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266 void (*get_buffer_callback)(struct AVCodecContext *c, int width, int height, int pict_type);
267
268 int has_b_frames; // is 1 if the decoded stream contains b frames
269 int dr_uvstride;
270 int dr_ip_buffer_count;
0147f198 271 int block_align; /* currently only for adpcm codec in wav/avi */
93a21abd 272
1f6b6e50 273 //FIXME this should be reordered after kabis API is finished ...
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274 /*
275 Note: Below are located reserved fields for further usage
276 It requires for ABI !!!
277 If you'll perform some changes then borrow new space from these fields
278 (void * can be safety replaced with struct * ;)
279 P L E A S E ! ! !
280 IMPORTANT: Never change order of already declared fields!!!
281 */
282 unsigned long long int
283 ull_res0,ull_res1,ull_res2,ull_res3,ull_res4,ull_res5,
284 ull_res6,ull_res7,ull_res8,ull_res9,ull_res10,ull_res11,ull_res12;
285 float
286 flt_res0,flt_res1,flt_res2,flt_res3,flt_res4,flt_res5,
1f6b6e50 287 flt_res6,flt_res7,flt_res8,flt_res9,flt_res10,flt_res11;
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288 void
289 *ptr_res0,*ptr_res1,*ptr_res2,*ptr_res3,*ptr_res4,*ptr_res5,
93a21abd 290 *ptr_res6;
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291 unsigned long int
292 ul_res0,ul_res1,ul_res2,ul_res3,ul_res4,ul_res5,
293 ul_res6,ul_res7,ul_res8,ul_res9,ul_res10,ul_res11,ul_res12;
294 unsigned int
0147f198 295 ui_res0,ui_res1;
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296 unsigned short int
297 us_res0,us_res1,us_res2,us_res3,us_res4,us_res5,
298 us_res6,us_res7,us_res8,us_res9,us_res10,us_res11,us_res12;
299 unsigned char
300 uc_res0,uc_res1,uc_res2,uc_res3,uc_res4,uc_res5,
0fd90455 301 uc_res6,uc_res7,uc_res8,uc_res9,uc_res10,uc_res11,uc_res12;
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302} AVCodecContext;
303
304typedef struct AVCodec {
305 char *name;
306 int type;
307 int id;
308 int priv_data_size;
309 int (*init)(AVCodecContext *);
310 int (*encode)(AVCodecContext *, UINT8 *buf, int buf_size, void *data);
311 int (*close)(AVCodecContext *);
0fd90455 312 int (*decode)(AVCodecContext *, void *outdata, int *outdata_size,
de6d9b64 313 UINT8 *buf, int buf_size);
bf89e6b1 314 int capabilities;
de6d9b64 315 struct AVCodec *next;
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316 /*
317 Note: Below are located reserved fields for further usage
318 It requires for ABI !!!
319 If you'll perform some changes then borrow new space from these fields
320 (void * can be safety replaced with struct * ;)
321 P L E A S E ! ! !
322 IMPORTANT: Never change order of already declared fields!!!
323 */
324 unsigned long long int
325 ull_res0,ull_res1,ull_res2,ull_res3,ull_res4,ull_res5,
326 ull_res6,ull_res7,ull_res8,ull_res9,ull_res10,ull_res11,ull_res12;
327 float
328 flt_res0,flt_res1,flt_res2,flt_res3,flt_res4,flt_res5,
329 flt_res6,flt_res7,flt_res8,flt_res9,flt_res10,flt_res11,flt_res12;
330 void
331 *ptr_res0,*ptr_res1,*ptr_res2,*ptr_res3,*ptr_res4,*ptr_res5,
332 *ptr_res6,*ptr_res7,*ptr_res8,*ptr_res9,*ptr_res10,*ptr_res11,*ptr_res12;
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333} AVCodec;
334
335/* three components are given, that's all */
336typedef struct AVPicture {
337 UINT8 *data[3];
338 int linesize[3];
339} AVPicture;
340
341extern AVCodec ac3_encoder;
342extern AVCodec mp2_encoder;
9d36bdc9 343extern AVCodec mp3lame_encoder;
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344extern AVCodec mpeg1video_encoder;
345extern AVCodec h263_encoder;
346extern AVCodec h263p_encoder;
347extern AVCodec rv10_encoder;
348extern AVCodec mjpeg_encoder;
bf89e6b1 349extern AVCodec mpeg4_encoder;
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350extern AVCodec msmpeg4v1_encoder;
351extern AVCodec msmpeg4v2_encoder;
352extern AVCodec msmpeg4v3_encoder;
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353extern AVCodec wmv1_encoder;
354extern AVCodec wmv2_encoder;
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355
356extern AVCodec h263_decoder;
bf89e6b1 357extern AVCodec mpeg4_decoder;
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358extern AVCodec msmpeg4v1_decoder;
359extern AVCodec msmpeg4v2_decoder;
360extern AVCodec msmpeg4v3_decoder;
e1a9dbff 361extern AVCodec wmv1_decoder;
0151a6f5 362extern AVCodec wmv2_decoder;
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363extern AVCodec mpeg_decoder;
364extern AVCodec h263i_decoder;
365extern AVCodec rv10_decoder;
be8ffec9 366extern AVCodec svq1_decoder;
4e66ab3b 367extern AVCodec mjpeg_decoder;
4b1f4f23 368extern AVCodec mp2_decoder;
a96b68b7 369extern AVCodec mp3_decoder;
de6d9b64 370
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371/* pcm codecs */
372#define PCM_CODEC(id, name) \
373extern AVCodec name ## _decoder; \
374extern AVCodec name ## _encoder;
375
376PCM_CODEC(CODEC_ID_PCM_S16LE, pcm_s16le);
377PCM_CODEC(CODEC_ID_PCM_S16BE, pcm_s16be);
378PCM_CODEC(CODEC_ID_PCM_U16LE, pcm_u16le);
379PCM_CODEC(CODEC_ID_PCM_U16BE, pcm_u16be);
380PCM_CODEC(CODEC_ID_PCM_S8, pcm_s8);
381PCM_CODEC(CODEC_ID_PCM_U8, pcm_u8);
382PCM_CODEC(CODEC_ID_PCM_ALAW, pcm_alaw);
383PCM_CODEC(CODEC_ID_PCM_MULAW, pcm_mulaw);
384
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385/* adpcm codecs */
386
387PCM_CODEC(CODEC_ID_ADPCM_IMA_QT, adpcm_ima_qt);
388PCM_CODEC(CODEC_ID_ADPCM_IMA_WAV, adpcm_ima_wav);
389PCM_CODEC(CODEC_ID_ADPCM_MS, adpcm_ms);
390
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391#undef PCM_CODEC
392
393/* dummy raw video codec */
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394extern AVCodec rawvideo_codec;
395
396/* the following codecs use external GPL libs */
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397extern AVCodec ac3_decoder;
398
399/* resample.c */
400
401struct ReSampleContext;
402
403typedef struct ReSampleContext ReSampleContext;
404
405ReSampleContext *audio_resample_init(int output_channels, int input_channels,
406 int output_rate, int input_rate);
407int audio_resample(ReSampleContext *s, short *output, short *input, int nb_samples);
408void audio_resample_close(ReSampleContext *s);
409
410/* YUV420 format is assumed ! */
411
412struct ImgReSampleContext;
413
414typedef struct ImgReSampleContext ImgReSampleContext;
415
416ImgReSampleContext *img_resample_init(int output_width, int output_height,
417 int input_width, int input_height);
418void img_resample(ImgReSampleContext *s,
419 AVPicture *output, AVPicture *input);
420
421void img_resample_close(ImgReSampleContext *s);
422
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423void avpicture_fill(AVPicture *picture, UINT8 *ptr,
424 int pix_fmt, int width, int height);
425int avpicture_get_size(int pix_fmt, int width, int height);
426
427/* convert among pixel formats */
428int img_convert(AVPicture *dst, int dst_pix_fmt,
429 AVPicture *src, int pix_fmt,
430 int width, int height);
431
432/* deinterlace a picture */
433int avpicture_deinterlace(AVPicture *dst, AVPicture *src,
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434 int pix_fmt, int width, int height);
435
436/* external high level API */
437
438extern AVCodec *first_avcodec;
439
156e5023 440/* returns LIBAVCODEC_VERSION_INT constant */
51a49663 441unsigned avcodec_version(void);
8bceb6af 442/* returns LIBAVCODEC_BUILD constant */
51a49663 443unsigned avcodec_build(void);
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444void avcodec_init(void);
445
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446void avcodec_set_bit_exact(void);
447
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448void register_avcodec(AVCodec *format);
449AVCodec *avcodec_find_encoder(enum CodecID id);
98f3b098 450AVCodec *avcodec_find_encoder_by_name(const char *name);
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451AVCodec *avcodec_find_decoder(enum CodecID id);
452AVCodec *avcodec_find_decoder_by_name(const char *name);
453void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode);
454
455int avcodec_open(AVCodecContext *avctx, AVCodec *codec);
456int avcodec_decode_audio(AVCodecContext *avctx, INT16 *samples,
457 int *frame_size_ptr,
458 UINT8 *buf, int buf_size);
459int avcodec_decode_video(AVCodecContext *avctx, AVPicture *picture,
460 int *got_picture_ptr,
461 UINT8 *buf, int buf_size);
462int avcodec_encode_audio(AVCodecContext *avctx, UINT8 *buf, int buf_size,
463 const short *samples);
464int avcodec_encode_video(AVCodecContext *avctx, UINT8 *buf, int buf_size,
465 const AVPicture *pict);
466
467int avcodec_close(AVCodecContext *avctx);
468
469void avcodec_register_all(void);
a96b68b7 470
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471void avcodec_flush_buffers(AVCodecContext *avctx);
472
79e7b305 473#ifdef FF_POSTPROCESS
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474extern int quant_store[MBR+1][MBC+1]; // [Review]
475#endif
476
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477
478/**
479 * Interface for 0.5.0 version
480 *
481 * do not even think about it's usage for this moment
482 */
483
484typedef struct {
485 // compressed size used from given memory buffer
486 int size;
487 /// I/P/B frame type
488 int frame_type;
489} avc_enc_result_t;
490
491/**
492 * Commands
493 * order can't be changed - once it was defined
494 */
495typedef enum {
496 // general commands
497 AVC_OPEN_BY_NAME = 0xACA000,
498 AVC_OPEN_BY_CODEC_ID,
499 AVC_OPEN_BY_FOURCC,
500 AVC_CLOSE,
501
502 AVC_FLUSH,
503 // pin - struct { uint8_t* src, uint_t src_size }
504 // pout - struct { AVPicture* img, consumed_bytes,
505 AVC_DECODE,
506 // pin - struct { AVPicture* img, uint8_t* dest, uint_t dest_size }
507 // pout - uint_t used_from_dest_size
508 AVC_ENCODE,
509
510 // query/get video commands
511 AVC_GET_VERSION = 0xACB000,
512 AVC_GET_WIDTH,
513 AVC_GET_HEIGHT,
514 AVC_GET_DELAY,
515 AVC_GET_QUANT_TABLE,
516 // ...
517
518 // query/get audio commands
519 AVC_GET_FRAME_SIZE = 0xABC000,
520
521 // maybe define some simple structure which
522 // might be passed to the user - but they can't
523 // contain any codec specific parts and these
524 // calls are usualy necessary only few times
525
526 // set video commands
527 AVC_SET_WIDTH = 0xACD000,
528 AVC_SET_HEIGHT,
529
530 // set video encoding commands
531 AVC_SET_FRAME_RATE = 0xACD800,
532 AVC_SET_QUALITY,
533 AVC_SET_HURRY_UP,
534
535 // set audio commands
536 AVC_SET_SAMPLE_RATE = 0xACE000,
537 AVC_SET_CHANNELS,
538
539} avc_cmd_t;
540
541/**
542 * \param handle allocated private structure by libavcodec
543 * for initialization pass NULL - will be returned pout
544 * user is supposed to know nothing about its structure
545 * \param cmd type of operation to be performed
546 * \param pint input parameter
547 * \param pout output parameter
548 *
549 * \returns command status - eventually for query command it might return
550 * integer resulting value
551 */
552int avcodec(void* handle, avc_cmd_t cmd, void* pin, void* pout);
553
544eb99c
FB
554/* memory */
555void *av_malloc(int size);
556void *av_mallocz(int size);
557void av_free(void *ptr);
558void __av_freep(void **ptr);
559#define av_freep(p) __av_freep((void **)(p))
560
a96b68b7 561#endif /* AVCODEC_H */