6 #define LIBAVCODEC_VERSION_INT 0x000406
7 #define LIBAVCODEC_VERSION "0.4.6"
8 #define LIBAVCODEC_BUILD 4600
9 #define LIBAVCODEC_BUILD_STR "4600"
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 /* encoding support */
81 /* note not everything is supported yet */
83 #define CODEC_FLAG_HQ 0x0001 /* high quality (non real time) encoding */
84 #define CODEC_FLAG_QSCALE 0x0002 /* use fixed qscale */
85 #define CODEC_FLAG_4MV 0x0004 /* 4 MV per MB allowed */
86 #define CODEC_FLAG_B 0x0008 /* use B frames */
87 #define CODEC_FLAG_QPEL 0x0010 /* use qpel MC */
88 #define CODEC_FLAG_GMC 0x0020 /* use GMC */
89 #define CODEC_FLAG_TYPE 0x0040 /* fixed I/P frame type, from avctx->key_frame */
91 /* codec capabilities */
93 /* decoder can use draw_horiz_band callback */
94 #define CODEC_CAP_DRAW_HORIZ_BAND 0x0001
96 #define FRAME_RATE_BASE 10000
98 typedef struct AVCodecContext
{
100 int bit_rate_tolerance
; /* amount of +- bits (>0)*/
102 int sub_id
; /* some codecs needs additionnal format info. It is
105 int me_method
; /* ME algorithm used for video coding */
108 int frame_rate
; /* frames per sec multiplied by FRAME_RATE_BASE */
110 int aspect_ratio_info
;
111 #define FF_ASPECT_SQUARE 1
112 #define FF_ASPECT_4_3_625 2
113 #define FF_ASPECT_4_3_525 3
114 #define FF_ASPECT_16_9_625 4
115 #define FF_ASPECT_16_9_525 5
116 int gop_size
; /* 0 = intra only */
117 enum PixelFormat pix_fmt
; /* pixel format, see PIX_FMT_xxx */
119 /* if non NULL, 'draw_horiz_band' is called by the libavcodec
120 decoder to draw an horizontal band. It improve cache usage. Not
121 all codecs can do that. You must check the codec capabilities
123 void (*draw_horiz_band
)(struct AVCodecContext
*s
,
124 UINT8
**src_ptr
, int linesize
,
125 int y
, int width
, int height
);
128 int sample_rate
; /* samples per sec */
130 int sample_fmt
; /* sample format, currenly unused */
132 /* the following data should not be initialized */
133 int frame_size
; /* in samples, initialized when calling 'init' */
134 int frame_number
; /* audio or video frame number */
135 int key_frame
; /* true if the previous compressed frame was
136 a key frame (intra, or seekable) */
137 int quality
; /* quality of the previous encoded frame
138 (between 1 (good) and 31 (bad)) */
139 float qcompress
; /* amount of qscale change between easy & hard scenes (0.0-1.0)*/
140 float qblur
; /* amount of qscale smoothing over time (0.0-1.0) */
141 int qmin
; /* min qscale */
142 int qmax
; /* max qscale */
143 int max_qdiff
; /* max qscale difference between frames */
145 struct AVCodec
*codec
;
148 /* The following data is for RTP friendly coding */
149 /* By now only H.263/H.263+ coder honours this */
150 int rtp_mode
; /* 1 for activate RTP friendly-mode */
151 /* highers numbers represent more error-prone */
152 /* enviroments, by now just "1" exist */
154 int rtp_payload_size
; /* The size of the RTP payload, the coder will */
155 /* do it's best to deliver a chunk with size */
156 /* below rtp_payload_size, the chunk will start */
157 /* with a start code on some codecs like H.263 */
158 /* This doesn't take account of any particular */
159 /* headers inside the transmited RTP payload */
162 /* The RTP callcack: This function is called */
163 /* every time the encoder as a packet to send */
164 /* Depends on the encoder if the data starts */
165 /* with a Start Code (it should) H.263 does */
166 void (*rtp_callback
)(void *data
, int size
, int packet_number
);
168 /* These are for PSNR calculation, if you set get_psnr to 1 */
169 /* after encoding you will have the PSNR on psnr_y/cb/cr */
175 /* statistics, used for 2-pass encoding */
183 int misc_bits
; // cbp, mb_type
186 /* the following fields are ignored */
187 void *opaque
; /* can be used to carry app specific stuff */
189 int codec_type
; /* see CODEC_TYPE_xxx */
190 int codec_id
; /* see CODEC_ID_xxx */
191 unsigned int codec_tag
; /* codec tag, only used if unknown codec */
194 typedef struct AVCodec
{
199 int (*init
)(AVCodecContext
*);
200 int (*encode
)(AVCodecContext
*, UINT8
*buf
, int buf_size
, void *data
);
201 int (*close
)(AVCodecContext
*);
202 int (*decode
)(AVCodecContext
*, void *outdata
, int *outdata_size
,
203 UINT8
*buf
, int buf_size
);
205 struct AVCodec
*next
;
208 /* three components are given, that's all */
209 typedef struct AVPicture
{
214 extern AVCodec ac3_encoder
;
215 extern AVCodec mp2_encoder
;
216 extern AVCodec mp3lame_encoder
;
217 extern AVCodec mpeg1video_encoder
;
218 extern AVCodec h263_encoder
;
219 extern AVCodec h263p_encoder
;
220 extern AVCodec rv10_encoder
;
221 extern AVCodec mjpeg_encoder
;
222 extern AVCodec mpeg4_encoder
;
223 extern AVCodec msmpeg4v1_encoder
;
224 extern AVCodec msmpeg4v2_encoder
;
225 extern AVCodec msmpeg4v3_encoder
;
227 extern AVCodec h263_decoder
;
228 extern AVCodec mpeg4_decoder
;
229 extern AVCodec msmpeg4v1_decoder
;
230 extern AVCodec msmpeg4v2_decoder
;
231 extern AVCodec msmpeg4v3_decoder
;
232 extern AVCodec wmv1_decoder
;
233 extern AVCodec mpeg_decoder
;
234 extern AVCodec h263i_decoder
;
235 extern AVCodec rv10_decoder
;
236 extern AVCodec mjpeg_decoder
;
237 extern AVCodec mp2_decoder
;
238 extern AVCodec mp3_decoder
;
241 #define PCM_CODEC(id, name) \
242 extern AVCodec name ## _decoder; \
243 extern AVCodec name ## _encoder;
245 PCM_CODEC(CODEC_ID_PCM_S16LE
, pcm_s16le
);
246 PCM_CODEC(CODEC_ID_PCM_S16BE
, pcm_s16be
);
247 PCM_CODEC(CODEC_ID_PCM_U16LE
, pcm_u16le
);
248 PCM_CODEC(CODEC_ID_PCM_U16BE
, pcm_u16be
);
249 PCM_CODEC(CODEC_ID_PCM_S8
, pcm_s8
);
250 PCM_CODEC(CODEC_ID_PCM_U8
, pcm_u8
);
251 PCM_CODEC(CODEC_ID_PCM_ALAW
, pcm_alaw
);
252 PCM_CODEC(CODEC_ID_PCM_MULAW
, pcm_mulaw
);
256 /* dummy raw video codec */
257 extern AVCodec rawvideo_codec
;
259 /* the following codecs use external GPL libs */
260 extern AVCodec ac3_decoder
;
264 struct ReSampleContext
;
266 typedef struct ReSampleContext ReSampleContext
;
268 ReSampleContext
*audio_resample_init(int output_channels
, int input_channels
,
269 int output_rate
, int input_rate
);
270 int audio_resample(ReSampleContext
*s
, short *output
, short *input
, int nb_samples
);
271 void audio_resample_close(ReSampleContext
*s
);
273 /* YUV420 format is assumed ! */
275 struct ImgReSampleContext
;
277 typedef struct ImgReSampleContext ImgReSampleContext
;
279 ImgReSampleContext
*img_resample_init(int output_width
, int output_height
,
280 int input_width
, int input_height
);
281 void img_resample(ImgReSampleContext
*s
,
282 AVPicture
*output
, AVPicture
*input
);
284 void img_resample_close(ImgReSampleContext
*s
);
286 void avpicture_fill(AVPicture
*picture
, UINT8
*ptr
,
287 int pix_fmt
, int width
, int height
);
288 int avpicture_get_size(int pix_fmt
, int width
, int height
);
290 /* convert among pixel formats */
291 int img_convert(AVPicture
*dst
, int dst_pix_fmt
,
292 AVPicture
*src
, int pix_fmt
,
293 int width
, int height
);
295 /* deinterlace a picture */
296 int avpicture_deinterlace(AVPicture
*dst
, AVPicture
*src
,
297 int pix_fmt
, int width
, int height
);
299 /* external high level API */
301 extern AVCodec
*first_avcodec
;
303 void avcodec_init(void);
305 void register_avcodec(AVCodec
*format
);
306 AVCodec
*avcodec_find_encoder(enum CodecID id
);
307 AVCodec
*avcodec_find_encoder_by_name(const char *name
);
308 AVCodec
*avcodec_find_decoder(enum CodecID id
);
309 AVCodec
*avcodec_find_decoder_by_name(const char *name
);
310 void avcodec_string(char *buf
, int buf_size
, AVCodecContext
*enc
, int encode
);
312 int avcodec_open(AVCodecContext
*avctx
, AVCodec
*codec
);
313 int avcodec_decode_audio(AVCodecContext
*avctx
, INT16
*samples
,
315 UINT8
*buf
, int buf_size
);
316 int avcodec_decode_video(AVCodecContext
*avctx
, AVPicture
*picture
,
317 int *got_picture_ptr
,
318 UINT8
*buf
, int buf_size
);
319 int avcodec_encode_audio(AVCodecContext
*avctx
, UINT8
*buf
, int buf_size
,
320 const short *samples
);
321 int avcodec_encode_video(AVCodecContext
*avctx
, UINT8
*buf
, int buf_size
,
322 const AVPicture
*pict
);
324 int avcodec_close(AVCodecContext
*avctx
);
326 void avcodec_register_all(void);
328 #ifdef FF_POSTPROCESS
333 extern int quant_store
[MBR
+1][MBC
+1]; // [Review]
336 #endif /* AVCODEC_H */