6 #define LIBAVCODEC_VERSION_INT 0x000406
7 #define LIBAVCODEC_VERSION "0.4.6"
8 #define LIBAVCODEC_BUILD 4605
9 #define LIBAVCODEC_BUILD_STR "4605"
29 /* various pcm "codecs" */
39 #define CODEC_ID_MSMPEG4 CODEC_ID_MSMPEG4V3
56 /* currently unused, may be used if 24/32 bits samples ever supported */
58 SAMPLE_FMT_S16 = 0, /* signed 16 bits */
62 #define AVCODEC_MAX_AUDIO_FRAME_SIZE 18432
64 /* motion estimation type, EPZS by default */
74 /* only for ME compatiblity with old apps */
75 extern int motion_estimation_method;
77 /* ME algos sorted by quality */
78 static const int Motion_Est_QTab[] = { 1, 4, 3, 6, 5, 2 };
80 #define FF_MAX_B_FRAMES 4
82 /* encoding support */
83 /* note not everything is supported yet */
85 #define CODEC_FLAG_HQ 0x0001 /* high quality (non real time) encoding */
86 #define CODEC_FLAG_QSCALE 0x0002 /* use fixed qscale */
87 #define CODEC_FLAG_4MV 0x0004 /* 4 MV per MB allowed */
88 #define CODEC_FLAG_QPEL 0x0010 /* use qpel MC */
89 #define CODEC_FLAG_GMC 0x0020 /* use GMC */
90 #define CODEC_FLAG_TYPE 0x0040 /* fixed I/P frame type, from avctx->key_frame */
91 /* parent program gurantees that the input for b-frame containing streams is not written to
92 for at least s->max_b_frames+1 frames, if this is not set than the input will be copied */
93 #define CODEC_FLAG_INPUT_PRESERVED 0x0100
94 #define CODEC_FLAG_PASS1 0x0200 /* use internal 2pass ratecontrol in first pass mode */
95 #define CODEC_FLAG_PASS2 0x0400 /* use internal 2pass ratecontrol in second pass mode */
96 #define CODEC_FLAG_EXTERN_HUFF 0x1000 /* use external huffman table (for mjpeg) */
98 /* codec capabilities */
100 /* decoder can use draw_horiz_band callback */
101 #define CODEC_CAP_DRAW_HORIZ_BAND 0x0001
103 #define FRAME_RATE_BASE 10000
105 typedef struct AVCodecContext {
107 int bit_rate_tolerance; /* amount of +- bits (>0)*/
109 int sub_id; /* some codecs needs additionnal format info. It is
112 int me_method; /* ME algorithm used for video coding */
114 /* extra data from parent application to codec, e.g. huffman table
116 /* the parent should allocate and free this buffer */
121 int frame_rate; /* frames per sec multiplied by FRAME_RATE_BASE */
123 int aspect_ratio_info;
124 #define FF_ASPECT_SQUARE 1
125 #define FF_ASPECT_4_3_625 2
126 #define FF_ASPECT_4_3_525 3
127 #define FF_ASPECT_16_9_625 4
128 #define FF_ASPECT_16_9_525 5
129 int gop_size; /* 0 = intra only */
130 enum PixelFormat pix_fmt; /* pixel format, see PIX_FMT_xxx */
132 /* if non NULL, 'draw_horiz_band' is called by the libavcodec
133 decoder to draw an horizontal band. It improve cache usage. Not
134 all codecs can do that. You must check the codec capabilities
136 void (*draw_horiz_band)(struct AVCodecContext *s,
137 UINT8 **src_ptr, int linesize,
138 int y, int width, int height);
141 int sample_rate; /* samples per sec */
143 int sample_fmt; /* sample format, currenly unused */
145 /* the following data should not be initialized */
146 int frame_size; /* in samples, initialized when calling 'init' */
147 int frame_number; /* audio or video frame number */
148 int key_frame; /* true if the previous compressed frame was
149 a key frame (intra, or seekable) */
150 int delay; /* number of frames the decoded output will be delayed relative to the encoded input */
151 uint8_t *mbskip_table; /* =1 if MB didnt change, is only valid for I/P frames
152 stride= mb_width = (width+15)>>4 */
154 /* encoding parameters */
155 int quality; /* quality of the previous encoded frame
156 (between 1 (good) and 31 (bad))
157 this is allso used to set the quality in vbr mode
158 and the per frame quality in CODEC_FLAG_TYPE (second pass mode) */
159 float qcompress; /* amount of qscale change between easy & hard scenes (0.0-1.0)*/
160 float qblur; /* amount of qscale smoothing over time (0.0-1.0) */
161 int qmin; /* min qscale */
162 int qmax; /* max qscale */
163 int max_qdiff; /* max qscale difference between frames */
164 int max_b_frames; /* maximum b frames, the output will be delayed by max_b_frames+1 relative to the input */
165 float b_quant_factor;/* qscale factor between ips and b frames */
167 int b_frame_strategy;
169 int hurry_up; /* when set to 1 during decoding, b frames will be skiped
170 when set to 2 idct/dequant will be skipped too */
172 struct AVCodec *codec;
175 /* The following data is for RTP friendly coding */
176 /* By now only H.263/H.263+ coder honours this */
177 int rtp_mode; /* 1 for activate RTP friendly-mode */
178 /* highers numbers represent more error-prone */
179 /* enviroments, by now just "1" exist */
181 int rtp_payload_size; /* The size of the RTP payload, the coder will */
182 /* do it's best to deliver a chunk with size */
183 /* below rtp_payload_size, the chunk will start */
184 /* with a start code on some codecs like H.263 */
185 /* This doesn't take account of any particular */
186 /* headers inside the transmited RTP payload */
189 /* The RTP callcack: This function is called */
190 /* every time the encoder as a packet to send */
191 /* Depends on the encoder if the data starts */
192 /* with a Start Code (it should) H.263 does */
193 void (*rtp_callback)(void *data, int size, int packet_number);
195 /* These are for PSNR calculation, if you set get_psnr to 1 */
196 /* after encoding you will have the PSNR on psnr_y/cb/cr */
202 /* statistics, used for 2-pass encoding */
210 int misc_bits; // cbp, mb_type
213 /* the following fields are ignored */
214 void *opaque; /* can be used to carry app specific stuff */
216 int codec_type; /* see CODEC_TYPE_xxx */
217 int codec_id; /* see CODEC_ID_xxx */
218 unsigned int codec_tag; /* codec tag, only used if unknown codec */
221 typedef struct AVCodec {
226 int (*init)(AVCodecContext *);
227 int (*encode)(AVCodecContext *, UINT8 *buf, int buf_size, void *data);
228 int (*close)(AVCodecContext *);
229 int (*decode)(AVCodecContext *, void *outdata, int *outdata_size,
230 UINT8 *buf, int buf_size);
232 struct AVCodec *next;
235 /* three components are given, that's all */
236 typedef struct AVPicture {
241 extern AVCodec ac3_encoder;
242 extern AVCodec mp2_encoder;
243 extern AVCodec mp3lame_encoder;
244 extern AVCodec mpeg1video_encoder;
245 extern AVCodec h263_encoder;
246 extern AVCodec h263p_encoder;
247 extern AVCodec rv10_encoder;
248 extern AVCodec mjpeg_encoder;
249 extern AVCodec mpeg4_encoder;
250 extern AVCodec msmpeg4v1_encoder;
251 extern AVCodec msmpeg4v2_encoder;
252 extern AVCodec msmpeg4v3_encoder;
254 extern AVCodec h263_decoder;
255 extern AVCodec mpeg4_decoder;
256 extern AVCodec msmpeg4v1_decoder;
257 extern AVCodec msmpeg4v2_decoder;
258 extern AVCodec msmpeg4v3_decoder;
259 extern AVCodec wmv1_decoder;
260 extern AVCodec mpeg_decoder;
261 extern AVCodec h263i_decoder;
262 extern AVCodec rv10_decoder;
263 extern AVCodec mjpeg_decoder;
264 extern AVCodec mp2_decoder;
265 extern AVCodec mp3_decoder;
268 #define PCM_CODEC(id, name) \
269 extern AVCodec name ## _decoder; \
270 extern AVCodec name ## _encoder;
272 PCM_CODEC(CODEC_ID_PCM_S16LE, pcm_s16le);
273 PCM_CODEC(CODEC_ID_PCM_S16BE, pcm_s16be);
274 PCM_CODEC(CODEC_ID_PCM_U16LE, pcm_u16le);
275 PCM_CODEC(CODEC_ID_PCM_U16BE, pcm_u16be);
276 PCM_CODEC(CODEC_ID_PCM_S8, pcm_s8);
277 PCM_CODEC(CODEC_ID_PCM_U8, pcm_u8);
278 PCM_CODEC(CODEC_ID_PCM_ALAW, pcm_alaw);
279 PCM_CODEC(CODEC_ID_PCM_MULAW, pcm_mulaw);
283 /* dummy raw video codec */
284 extern AVCodec rawvideo_codec;
286 /* the following codecs use external GPL libs */
287 extern AVCodec ac3_decoder;
291 struct ReSampleContext;
293 typedef struct ReSampleContext ReSampleContext;
295 ReSampleContext *audio_resample_init(int output_channels, int input_channels,
296 int output_rate, int input_rate);
297 int audio_resample(ReSampleContext *s, short *output, short *input, int nb_samples);
298 void audio_resample_close(ReSampleContext *s);
300 /* YUV420 format is assumed ! */
302 struct ImgReSampleContext;
304 typedef struct ImgReSampleContext ImgReSampleContext;
306 ImgReSampleContext *img_resample_init(int output_width, int output_height,
307 int input_width, int input_height);
308 void img_resample(ImgReSampleContext *s,
309 AVPicture *output, AVPicture *input);
311 void img_resample_close(ImgReSampleContext *s);
313 void avpicture_fill(AVPicture *picture, UINT8 *ptr,
314 int pix_fmt, int width, int height);
315 int avpicture_get_size(int pix_fmt, int width, int height);
317 /* convert among pixel formats */
318 int img_convert(AVPicture *dst, int dst_pix_fmt,
319 AVPicture *src, int pix_fmt,
320 int width, int height);
322 /* deinterlace a picture */
323 int avpicture_deinterlace(AVPicture *dst, AVPicture *src,
324 int pix_fmt, int width, int height);
326 /* external high level API */
328 extern AVCodec *first_avcodec;
330 void avcodec_init(void);
332 void register_avcodec(AVCodec *format);
333 AVCodec *avcodec_find_encoder(enum CodecID id);
334 AVCodec *avcodec_find_encoder_by_name(const char *name);
335 AVCodec *avcodec_find_decoder(enum CodecID id);
336 AVCodec *avcodec_find_decoder_by_name(const char *name);
337 void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode);
339 int avcodec_open(AVCodecContext *avctx, AVCodec *codec);
340 int avcodec_decode_audio(AVCodecContext *avctx, INT16 *samples,
342 UINT8 *buf, int buf_size);
343 int avcodec_decode_video(AVCodecContext *avctx, AVPicture *picture,
344 int *got_picture_ptr,
345 UINT8 *buf, int buf_size);
346 int avcodec_encode_audio(AVCodecContext *avctx, UINT8 *buf, int buf_size,
347 const short *samples);
348 int avcodec_encode_video(AVCodecContext *avctx, UINT8 *buf, int buf_size,
349 const AVPicture *pict);
351 int avcodec_close(AVCodecContext *avctx);
353 void avcodec_register_all(void);
355 void avcodec_flush_buffers(AVCodecContext *avctx);
357 #ifdef FF_POSTPROCESS
362 extern int quant_store[MBR+1][MBC+1]; // [Review]
365 #endif /* AVCODEC_H */