BeOS patches by "shatty" <shatty at myrealbox.com>
[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 4617
9#define LIBAVCODEC_BUILD_STR "4617"
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,
de6d9b64 40};
84afee34 41#define CODEC_ID_MSMPEG4 CODEC_ID_MSMPEG4V3
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42
43enum CodecType {
4a663d80 44 CODEC_TYPE_UNKNOWN = -1,
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45 CODEC_TYPE_VIDEO,
46 CODEC_TYPE_AUDIO,
47};
48
49enum PixelFormat {
9f862d11 50 PIX_FMT_ANY = -1,
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51 PIX_FMT_YUV420P,
52 PIX_FMT_YUV422,
53 PIX_FMT_RGB24,
54 PIX_FMT_BGR24,
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55 PIX_FMT_YUV422P,
56 PIX_FMT_YUV444P,
be8ffec9 57 PIX_FMT_YUV410P
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58};
59
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60/* currently unused, may be used if 24/32 bits samples ever supported */
61enum SampleFormat {
62 SAMPLE_FMT_S16 = 0, /* signed 16 bits */
63};
64
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65/* in bytes */
66#define AVCODEC_MAX_AUDIO_FRAME_SIZE 18432
67
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68/* motion estimation type, EPZS by default */
69enum Motion_Est_ID {
101bea5f 70 ME_ZERO = 1,
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71 ME_FULL,
72 ME_LOG,
73 ME_PHODS,
74 ME_EPZS,
75 ME_X1
76};
77
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78/* only for ME compatiblity with old apps */
79extern int motion_estimation_method;
80
e4986da9 81/* ME algos sorted by quality */
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82static const int Motion_Est_QTab[] = { ME_ZERO, ME_PHODS, ME_LOG,
83 ME_X1, ME_EPZS, ME_FULL };
de6d9b64 84
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85#define FF_MAX_B_FRAMES 4
86
de6d9b64 87/* encoding support */
ba6802de 88/* note not everything is supported yet */
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89
90#define CODEC_FLAG_HQ 0x0001 /* high quality (non real time) encoding */
91#define CODEC_FLAG_QSCALE 0x0002 /* use fixed qscale */
ba6802de 92#define CODEC_FLAG_4MV 0x0004 /* 4 MV per MB allowed */
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93#define CODEC_FLAG_QPEL 0x0010 /* use qpel MC */
94#define CODEC_FLAG_GMC 0x0020 /* use GMC */
60e575ac 95#define CODEC_FLAG_TYPE 0x0040 /* fixed I/P frame type, from avctx->key_frame */
1f6b6e50 96#define CODEC_FLAG_PART 0x0080 /* use data partitioning */
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97/* parent program gurantees that the input for b-frame containing streams is not written to
98 for at least s->max_b_frames+1 frames, if this is not set than the input will be copied */
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99#define CODEC_FLAG_INPUT_PRESERVED 0x0100
100#define CODEC_FLAG_PASS1 0x0200 /* use internal 2pass ratecontrol in first pass mode */
101#define CODEC_FLAG_PASS2 0x0400 /* use internal 2pass ratecontrol in second pass mode */
e84c31dc 102#define CODEC_FLAG_EXTERN_HUFF 0x1000 /* use external huffman table (for mjpeg) */
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103#define CODEC_FLAG_GRAY 0x2000 /* only decode/encode grayscale */
104#define CODEC_FLAG_EMU_EDGE 0x4000/* dont draw edges */
105#define CODEC_FLAG_DR1 0x8000 /* dr1 */
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106/* codec capabilities */
107
108/* decoder can use draw_horiz_band callback */
109#define CODEC_CAP_DRAW_HORIZ_BAND 0x0001
93a21abd 110#define CODEC_CAP_DR1 0x0002 /* direct rendering method 1 */
bf89e6b1 111
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112#define FRAME_RATE_BASE 10000
113
114typedef struct AVCodecContext {
115 int bit_rate;
9cdd6a24 116 int bit_rate_tolerance; /* amount of +- bits (>0)*/
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117 int flags;
118 int sub_id; /* some codecs needs additionnal format info. It is
119 stored there */
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120
121 int me_method; /* ME algorithm used for video coding */
122
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123 /* extra data from parent application to codec, e.g. huffman table
124 for mjpeg */
125 /* the parent should allocate and free this buffer */
126 void *extradata;
127 int extradata_size;
128
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129 /* video only */
130 int frame_rate; /* frames per sec multiplied by FRAME_RATE_BASE */
131 int width, height;
11ce8834 132 int aspect_ratio_info;
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133#define FF_ASPECT_SQUARE 1
134#define FF_ASPECT_4_3_625 2
135#define FF_ASPECT_4_3_525 3
136#define FF_ASPECT_16_9_625 4
137#define FF_ASPECT_16_9_525 5
de6d9b64 138 int gop_size; /* 0 = intra only */
bc657ac3 139 enum PixelFormat pix_fmt; /* pixel format, see PIX_FMT_xxx */
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140 int repeat_pict; /* when decoding, this signal how much the picture */
141 /* must be delayed. */
142 /* extra_delay = (repeat_pict / 2) * (1/fps) */
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143 /* if non NULL, 'draw_horiz_band' is called by the libavcodec
144 decoder to draw an horizontal band. It improve cache usage. Not
145 all codecs can do that. You must check the codec capabilities
146 before */
147 void (*draw_horiz_band)(struct AVCodecContext *s,
148 UINT8 **src_ptr, int linesize,
149 int y, int width, int height);
150
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151 /* audio only */
152 int sample_rate; /* samples per sec */
153 int channels;
a96b68b7 154 int sample_fmt; /* sample format, currenly unused */
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155
156 /* the following data should not be initialized */
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157 int frame_size; /* in samples, initialized when calling 'init' */
158 int frame_number; /* audio or video frame number */
159 int real_pict_num; /* returns the real picture number of
160 previous encoded frame */
161 int key_frame; /* true if the previous compressed frame was
162 a key frame (intra, or seekable) */
163 int pict_type; /* picture type of the previous
164 encoded frame */
165/* FIXME: these should have FF_ */
166#define I_TYPE 1 // Intra
167#define P_TYPE 2 // Predicted
168#define B_TYPE 3 // Bi-dir predicted
169#define S_TYPE 4 // S(GMC)-VOP MPEG4
170
171 int delay; /* number of frames the decoded output
172 will be delayed relative to the encoded input */
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173 uint8_t *mbskip_table; /* =1 if MB didnt change, is only valid for I/P frames
174 stride= mb_width = (width+15)>>4 */
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175
176 /* encoding parameters */
de6d9b64 177 int quality; /* quality of the previous encoded frame
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178 (between 1 (good) and 31 (bad))
179 this is allso used to set the quality in vbr mode
180 and the per frame quality in CODEC_FLAG_TYPE (second pass mode) */
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181 float qcompress; /* amount of qscale change between easy & hard scenes (0.0-1.0)*/
182 float qblur; /* amount of qscale smoothing over time (0.0-1.0) */
183 int qmin; /* min qscale */
184 int qmax; /* max qscale */
185 int max_qdiff; /* max qscale difference between frames */
9dbcbd92 186 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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187 float b_quant_factor;/* qscale factor between ips and b frames */
188 int rc_strategy;
189 int b_frame_strategy;
9dbcbd92 190
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191 int hurry_up; /* when set to 1 during decoding, b frames will be skiped
192 when set to 2 idct/dequant will be skipped too */
193
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194 struct AVCodec *codec;
195 void *priv_data;
196
644d98a4 197 /* The following data is for RTP friendly coding */
1f6b6e50 198 /* By now only H.263/H.263+/MPEG4 coder honours this */
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199 int rtp_mode; /* 1 for activate RTP friendly-mode */
200 /* highers numbers represent more error-prone */
201 /* enviroments, by now just "1" exist */
202
203 int rtp_payload_size; /* The size of the RTP payload, the coder will */
204 /* do it's best to deliver a chunk with size */
205 /* below rtp_payload_size, the chunk will start */
206 /* with a start code on some codecs like H.263 */
207 /* This doesn't take account of any particular */
208 /* headers inside the transmited RTP payload */
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209
210
211 /* The RTP callcack: This function is called */
212 /* every time the encoder as a packet to send */
213 /* Depends on the encoder if the data starts */
214 /* with a Start Code (it should) H.263 does */
215 void (*rtp_callback)(void *data, int size, int packet_number);
216
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217 /* These are for PSNR calculation, if you set get_psnr to 1 */
218 /* after encoding you will have the PSNR on psnr_y/cb/cr */
219 int get_psnr;
220 float psnr_y;
221 float psnr_cb;
222 float psnr_cr;
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223
224 /* statistics, used for 2-pass encoding */
225 int mv_bits;
226 int header_bits;
227 int i_tex_bits;
228 int p_tex_bits;
229 int i_count;
230 int p_count;
231 int skip_count;
232 int misc_bits; // cbp, mb_type
233 int frame_bits;
644d98a4 234
de6d9b64 235 /* the following fields are ignored */
bf89e6b1 236 void *opaque; /* can be used to carry app specific stuff */
de6d9b64 237 char codec_name[32];
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238 enum CodecType codec_type; /* see CODEC_TYPE_xxx */
239 enum CodecID codec_id; /* see CODEC_ID_xxx */
de6d9b64 240 unsigned int codec_tag; /* codec tag, only used if unknown codec */
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241
242 int workaround_bugs; /* workaround bugs in encoders which cannot be detected automatically */
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243 int luma_elim_threshold;
244 int chroma_elim_threshold;
245 int strict_std_compliance; /* strictly follow the std (MPEG4, ...) */
246 float b_quant_offset;/* qscale offset between ips and b frames, not implemented yet */
247 int error_resilience;
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248
249#ifndef MBC
250#define MBC 128
251#define MBR 96
252#endif
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253#define QP_TYPE int //FIXME note xxx this might be changed to int8_t
254
255 QP_TYPE *quant_store; /* field for communicating with external postprocessing */
8696b636 256 unsigned qstride;
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257
258 uint8_t *dr_buffer[3];
259 int dr_stride;
260 void *dr_opaque_frame;
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261 void (*get_buffer_callback)(struct AVCodecContext *c, int width, int height, int pict_type);
262
263 int has_b_frames; // is 1 if the decoded stream contains b frames
264 int dr_uvstride;
265 int dr_ip_buffer_count;
93a21abd 266
1f6b6e50 267 //FIXME this should be reordered after kabis API is finished ...
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268 /*
269 Note: Below are located reserved fields for further usage
270 It requires for ABI !!!
271 If you'll perform some changes then borrow new space from these fields
272 (void * can be safety replaced with struct * ;)
273 P L E A S E ! ! !
274 IMPORTANT: Never change order of already declared fields!!!
275 */
276 unsigned long long int
277 ull_res0,ull_res1,ull_res2,ull_res3,ull_res4,ull_res5,
278 ull_res6,ull_res7,ull_res8,ull_res9,ull_res10,ull_res11,ull_res12;
279 float
280 flt_res0,flt_res1,flt_res2,flt_res3,flt_res4,flt_res5,
1f6b6e50 281 flt_res6,flt_res7,flt_res8,flt_res9,flt_res10,flt_res11;
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282 void
283 *ptr_res0,*ptr_res1,*ptr_res2,*ptr_res3,*ptr_res4,*ptr_res5,
93a21abd 284 *ptr_res6;
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285 unsigned long int
286 ul_res0,ul_res1,ul_res2,ul_res3,ul_res4,ul_res5,
287 ul_res6,ul_res7,ul_res8,ul_res9,ul_res10,ul_res11,ul_res12;
288 unsigned int
0fd90455 289 ui_res0,ui_res1,ui_res2;
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290 unsigned short int
291 us_res0,us_res1,us_res2,us_res3,us_res4,us_res5,
292 us_res6,us_res7,us_res8,us_res9,us_res10,us_res11,us_res12;
293 unsigned char
294 uc_res0,uc_res1,uc_res2,uc_res3,uc_res4,uc_res5,
0fd90455 295 uc_res6,uc_res7,uc_res8,uc_res9,uc_res10,uc_res11,uc_res12;
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296} AVCodecContext;
297
298typedef struct AVCodec {
299 char *name;
300 int type;
301 int id;
302 int priv_data_size;
303 int (*init)(AVCodecContext *);
304 int (*encode)(AVCodecContext *, UINT8 *buf, int buf_size, void *data);
305 int (*close)(AVCodecContext *);
0fd90455 306 int (*decode)(AVCodecContext *, void *outdata, int *outdata_size,
de6d9b64 307 UINT8 *buf, int buf_size);
bf89e6b1 308 int capabilities;
de6d9b64 309 struct AVCodec *next;
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310 /*
311 Note: Below are located reserved fields for further usage
312 It requires for ABI !!!
313 If you'll perform some changes then borrow new space from these fields
314 (void * can be safety replaced with struct * ;)
315 P L E A S E ! ! !
316 IMPORTANT: Never change order of already declared fields!!!
317 */
318 unsigned long long int
319 ull_res0,ull_res1,ull_res2,ull_res3,ull_res4,ull_res5,
320 ull_res6,ull_res7,ull_res8,ull_res9,ull_res10,ull_res11,ull_res12;
321 float
322 flt_res0,flt_res1,flt_res2,flt_res3,flt_res4,flt_res5,
323 flt_res6,flt_res7,flt_res8,flt_res9,flt_res10,flt_res11,flt_res12;
324 void
325 *ptr_res0,*ptr_res1,*ptr_res2,*ptr_res3,*ptr_res4,*ptr_res5,
326 *ptr_res6,*ptr_res7,*ptr_res8,*ptr_res9,*ptr_res10,*ptr_res11,*ptr_res12;
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327} AVCodec;
328
329/* three components are given, that's all */
330typedef struct AVPicture {
331 UINT8 *data[3];
332 int linesize[3];
333} AVPicture;
334
335extern AVCodec ac3_encoder;
336extern AVCodec mp2_encoder;
9d36bdc9 337extern AVCodec mp3lame_encoder;
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338extern AVCodec mpeg1video_encoder;
339extern AVCodec h263_encoder;
340extern AVCodec h263p_encoder;
341extern AVCodec rv10_encoder;
342extern AVCodec mjpeg_encoder;
bf89e6b1 343extern AVCodec mpeg4_encoder;
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344extern AVCodec msmpeg4v1_encoder;
345extern AVCodec msmpeg4v2_encoder;
346extern AVCodec msmpeg4v3_encoder;
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347extern AVCodec wmv1_encoder;
348extern AVCodec wmv2_encoder;
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349
350extern AVCodec h263_decoder;
bf89e6b1 351extern AVCodec mpeg4_decoder;
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352extern AVCodec msmpeg4v1_decoder;
353extern AVCodec msmpeg4v2_decoder;
354extern AVCodec msmpeg4v3_decoder;
e1a9dbff 355extern AVCodec wmv1_decoder;
0151a6f5 356extern AVCodec wmv2_decoder;
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357extern AVCodec mpeg_decoder;
358extern AVCodec h263i_decoder;
359extern AVCodec rv10_decoder;
be8ffec9 360extern AVCodec svq1_decoder;
4e66ab3b 361extern AVCodec mjpeg_decoder;
4b1f4f23 362extern AVCodec mp2_decoder;
a96b68b7 363extern AVCodec mp3_decoder;
de6d9b64 364
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365/* pcm codecs */
366#define PCM_CODEC(id, name) \
367extern AVCodec name ## _decoder; \
368extern AVCodec name ## _encoder;
369
370PCM_CODEC(CODEC_ID_PCM_S16LE, pcm_s16le);
371PCM_CODEC(CODEC_ID_PCM_S16BE, pcm_s16be);
372PCM_CODEC(CODEC_ID_PCM_U16LE, pcm_u16le);
373PCM_CODEC(CODEC_ID_PCM_U16BE, pcm_u16be);
374PCM_CODEC(CODEC_ID_PCM_S8, pcm_s8);
375PCM_CODEC(CODEC_ID_PCM_U8, pcm_u8);
376PCM_CODEC(CODEC_ID_PCM_ALAW, pcm_alaw);
377PCM_CODEC(CODEC_ID_PCM_MULAW, pcm_mulaw);
378
379#undef PCM_CODEC
380
381/* dummy raw video codec */
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382extern AVCodec rawvideo_codec;
383
384/* the following codecs use external GPL libs */
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385extern AVCodec ac3_decoder;
386
387/* resample.c */
388
389struct ReSampleContext;
390
391typedef struct ReSampleContext ReSampleContext;
392
393ReSampleContext *audio_resample_init(int output_channels, int input_channels,
394 int output_rate, int input_rate);
395int audio_resample(ReSampleContext *s, short *output, short *input, int nb_samples);
396void audio_resample_close(ReSampleContext *s);
397
398/* YUV420 format is assumed ! */
399
400struct ImgReSampleContext;
401
402typedef struct ImgReSampleContext ImgReSampleContext;
403
404ImgReSampleContext *img_resample_init(int output_width, int output_height,
405 int input_width, int input_height);
406void img_resample(ImgReSampleContext *s,
407 AVPicture *output, AVPicture *input);
408
409void img_resample_close(ImgReSampleContext *s);
410
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411void avpicture_fill(AVPicture *picture, UINT8 *ptr,
412 int pix_fmt, int width, int height);
413int avpicture_get_size(int pix_fmt, int width, int height);
414
415/* convert among pixel formats */
416int img_convert(AVPicture *dst, int dst_pix_fmt,
417 AVPicture *src, int pix_fmt,
418 int width, int height);
419
420/* deinterlace a picture */
421int avpicture_deinterlace(AVPicture *dst, AVPicture *src,
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422 int pix_fmt, int width, int height);
423
424/* external high level API */
425
426extern AVCodec *first_avcodec;
427
156e5023 428/* returns LIBAVCODEC_VERSION_INT constant */
51a49663 429unsigned avcodec_version(void);
8bceb6af 430/* returns LIBAVCODEC_BUILD constant */
51a49663 431unsigned avcodec_build(void);
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432void avcodec_init(void);
433
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434void avcodec_set_bit_exact(void);
435
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436void register_avcodec(AVCodec *format);
437AVCodec *avcodec_find_encoder(enum CodecID id);
98f3b098 438AVCodec *avcodec_find_encoder_by_name(const char *name);
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439AVCodec *avcodec_find_decoder(enum CodecID id);
440AVCodec *avcodec_find_decoder_by_name(const char *name);
441void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode);
442
443int avcodec_open(AVCodecContext *avctx, AVCodec *codec);
444int avcodec_decode_audio(AVCodecContext *avctx, INT16 *samples,
445 int *frame_size_ptr,
446 UINT8 *buf, int buf_size);
447int avcodec_decode_video(AVCodecContext *avctx, AVPicture *picture,
448 int *got_picture_ptr,
449 UINT8 *buf, int buf_size);
450int avcodec_encode_audio(AVCodecContext *avctx, UINT8 *buf, int buf_size,
451 const short *samples);
452int avcodec_encode_video(AVCodecContext *avctx, UINT8 *buf, int buf_size,
453 const AVPicture *pict);
454
455int avcodec_close(AVCodecContext *avctx);
456
457void avcodec_register_all(void);
a96b68b7 458
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459void avcodec_flush_buffers(AVCodecContext *avctx);
460
79e7b305 461#ifdef FF_POSTPROCESS
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462extern int quant_store[MBR+1][MBC+1]; // [Review]
463#endif
464
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465
466/**
467 * Interface for 0.5.0 version
468 *
469 * do not even think about it's usage for this moment
470 */
471
472typedef struct {
473 // compressed size used from given memory buffer
474 int size;
475 /// I/P/B frame type
476 int frame_type;
477} avc_enc_result_t;
478
479/**
480 * Commands
481 * order can't be changed - once it was defined
482 */
483typedef enum {
484 // general commands
485 AVC_OPEN_BY_NAME = 0xACA000,
486 AVC_OPEN_BY_CODEC_ID,
487 AVC_OPEN_BY_FOURCC,
488 AVC_CLOSE,
489
490 AVC_FLUSH,
491 // pin - struct { uint8_t* src, uint_t src_size }
492 // pout - struct { AVPicture* img, consumed_bytes,
493 AVC_DECODE,
494 // pin - struct { AVPicture* img, uint8_t* dest, uint_t dest_size }
495 // pout - uint_t used_from_dest_size
496 AVC_ENCODE,
497
498 // query/get video commands
499 AVC_GET_VERSION = 0xACB000,
500 AVC_GET_WIDTH,
501 AVC_GET_HEIGHT,
502 AVC_GET_DELAY,
503 AVC_GET_QUANT_TABLE,
504 // ...
505
506 // query/get audio commands
507 AVC_GET_FRAME_SIZE = 0xABC000,
508
509 // maybe define some simple structure which
510 // might be passed to the user - but they can't
511 // contain any codec specific parts and these
512 // calls are usualy necessary only few times
513
514 // set video commands
515 AVC_SET_WIDTH = 0xACD000,
516 AVC_SET_HEIGHT,
517
518 // set video encoding commands
519 AVC_SET_FRAME_RATE = 0xACD800,
520 AVC_SET_QUALITY,
521 AVC_SET_HURRY_UP,
522
523 // set audio commands
524 AVC_SET_SAMPLE_RATE = 0xACE000,
525 AVC_SET_CHANNELS,
526
527} avc_cmd_t;
528
529/**
530 * \param handle allocated private structure by libavcodec
531 * for initialization pass NULL - will be returned pout
532 * user is supposed to know nothing about its structure
533 * \param cmd type of operation to be performed
534 * \param pint input parameter
535 * \param pout output parameter
536 *
537 * \returns command status - eventually for query command it might return
538 * integer resulting value
539 */
540int avcodec(void* handle, avc_cmd_t cmd, void* pin, void* pout);
541
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542/* memory */
543void *av_malloc(int size);
544void *av_mallocz(int size);
545void av_free(void *ptr);
546void __av_freep(void **ptr);
547#define av_freep(p) __av_freep((void **)(p))
548
a96b68b7 549#endif /* AVCODEC_H */