1 /*****************************************************************************
2 * avcodec.h: decoder and encoder using libavcodec
3 *****************************************************************************
4 * Copyright (C) 2001-2008 the VideoLAN team
7 * Authors: Laurent Aimar <fenrir@via.ecp.fr>
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
22 *****************************************************************************/
24 /* VLC <-> avcodec tables */
25 int GetFfmpegCodec( vlc_fourcc_t i_fourcc, int *pi_cat,
26 int *pi_ffmpeg_codec, const char **ppsz_name );
27 int GetVlcFourcc( int i_ffmpeg_codec, int *pi_cat,
28 vlc_fourcc_t *pi_fourcc, const char **ppsz_name );
29 int TestFfmpegChroma( const int i_ffmpeg_id, const vlc_fourcc_t i_vlc_fourcc );
30 int GetFfmpegChroma( int *i_ffmpeg_chroma, const video_format_t fmt );
31 int GetVlcChroma( video_format_t *fmt, const int i_ffmpeg_chroma );
34 picture_t * DecodeVideo ( decoder_t *, block_t ** );
35 aout_buffer_t * DecodeAudio( decoder_t *, block_t ** );
37 /* Video encoder module */
38 int OpenEncoder ( vlc_object_t * );
39 void CloseEncoder( vlc_object_t * );
41 /* Audio encoder module */
42 int OpenAudioEncoder ( vlc_object_t * );
43 void CloseAudioEncoder( vlc_object_t * );
45 /* Deinterlace video filter module */
46 int OpenDeinterlace( vlc_object_t * );
47 void CloseDeinterlace( vlc_object_t * );
49 void InitLibavcodec( vlc_object_t *p_object );
52 int InitVideoDec( decoder_t *p_dec, AVCodecContext *p_context,
53 AVCodec *p_codec, int i_codec_id, const char *psz_namecodec );
54 void EndVideoDec( decoder_t *p_dec );
57 int InitAudioDec( decoder_t *p_dec, AVCodecContext *p_context,
58 AVCodec *p_codec, int i_codec_id, const char *psz_namecodec );
59 void EndAudioDec( decoder_t *p_dec );
61 /* Avcodec global lock */
62 extern vlc_mutex_t avcodec_lock;
64 /*****************************************************************************
65 * Module descriptor help strings
66 *****************************************************************************/
67 #define DR_TEXT N_("Direct rendering")
68 /* FIXME Does somebody who knows what it does, explain */
69 #define DR_LONGTEXT N_("Direct rendering")
71 #define ERROR_TEXT N_("Error resilience")
72 #define ERROR_LONGTEXT N_( \
73 "Ffmpeg can do error resilience.\n" \
74 "However, with a buggy encoder (such as the ISO MPEG-4 encoder from M$) " \
75 "this can produce a lot of errors.\n" \
76 "Valid values range from 0 to 4 (0 disables all errors resilience).")
78 #define BUGS_TEXT N_("Workaround bugs")
79 #define BUGS_LONGTEXT N_( \
80 "Try to fix some bugs:\n" \
83 "4 xvid interlaced\n" \
88 "This must be the sum of the values. For example, to fix \"ac vlc\" and " \
89 "\"ump4\", enter 40.")
91 #define HURRYUP_TEXT N_("Hurry up")
92 #define HURRYUP_LONGTEXT N_( \
93 "The decoder can partially decode or skip frame(s) " \
94 "when there is not enough time. It's useful with low CPU power " \
95 "but it can produce distorted pictures.")
97 #define SKIP_FRAME_TEXT N_("Skip frame (default=0)")
98 #define SKIP_FRAME_LONGTEXT N_( \
99 "Force skipping of frames to speed up decoding " \
100 "(-1=None, 0=Default, 1=B-frames, 2=P-frames, 3=B+P frames, 4=all frames)." )
102 #define SKIP_IDCT_TEXT N_("Skip idct (default=0)")
103 #define SKIP_IDCT_LONGTEXT N_( \
104 "Force skipping of idct to speed up decoding for frame types" \
105 "(-1=None, 0=Default, 1=B-frames, 2=P-frames, 3=B+P frames, 4=all frames)." )
107 #define DEBUG_TEXT N_( "Debug mask" )
108 #define DEBUG_LONGTEXT N_( "Set ffmpeg debug mask" )
110 /* TODO: Use a predefined list, with 0,1,2,4,7 */
111 #define VISMV_TEXT N_( "Visualize motion vectors" )
112 #define VISMV_LONGTEXT N_( \
113 "You can overlay the motion vectors (arrows showing how the images move) "\
114 "on the image. This value is a mask, based on these values:\n"\
115 "1 - visualize forward predicted MVs of P frames\n" \
116 "2 - visualize forward predicted MVs of B frames\n" \
117 "4 - visualize backward predicted MVs of B frames\n" \
118 "To visualize all vectors, the value should be 7." )
120 #define LOWRES_TEXT N_( "Low resolution decoding" )
121 #define LOWRES_LONGTEXT N_( "Only decode a low resolution version of " \
122 "the video. This requires less processing power" )
124 #define SKIPLOOPF_TEXT N_( "Skip the loop filter for H.264 decoding" )
125 #define SKIPLOOPF_LONGTEXT N_( "Skipping the loop filter (aka deblocking) " \
126 "usually has a detrimental effect on quality. However it provides a big " \
127 "speedup for high definition streams." )
132 #define ENC_CFG_PREFIX "sout-ffmpeg-"
134 #define ENC_KEYINT_TEXT N_( "Ratio of key frames" )
135 #define ENC_KEYINT_LONGTEXT N_( "Number of frames " \
136 "that will be coded for one key frame." )
138 #define ENC_BFRAMES_TEXT N_( "Ratio of B frames" )
139 #define ENC_BFRAMES_LONGTEXT N_( "Number of " \
140 "B frames that will be coded between two reference frames." )
142 #define ENC_VT_TEXT N_( "Video bitrate tolerance" )
143 #define ENC_VT_LONGTEXT N_( "Video bitrate tolerance in kbit/s." )
145 #define ENC_INTERLACE_TEXT N_( "Interlaced encoding" )
146 #define ENC_INTERLACE_LONGTEXT N_( "Enable dedicated " \
147 "algorithms for interlaced frames." )
149 #define ENC_INTERLACE_ME_TEXT N_( "Interlaced motion estimation" )
150 #define ENC_INTERLACE_ME_LONGTEXT N_( "Enable interlaced " \
151 "motion estimation algorithms. This requires more CPU." )
153 #define ENC_PRE_ME_TEXT N_( "Pre-motion estimation" )
154 #define ENC_PRE_ME_LONGTEXT N_( "Enable the pre-motion " \
155 "estimation algorithm.")
157 #define ENC_RC_BUF_TEXT N_( "Rate control buffer size" )
158 #define ENC_RC_BUF_LONGTEXT N_( "Rate control " \
159 "buffer size (in kbytes). A bigger buffer will allow for better rate " \
160 "control, but will cause a delay in the stream." )
162 #define ENC_RC_BUF_AGGR_TEXT N_( "Rate control buffer aggressiveness" )
163 #define ENC_RC_BUF_AGGR_LONGTEXT N_( "Rate control "\
164 "buffer aggressiveness." )
166 #define ENC_IQUANT_FACTOR_TEXT N_( "I quantization factor" )
167 #define ENC_IQUANT_FACTOR_LONGTEXT N_( \
168 "Quantization factor of I frames, compared with P frames (for instance " \
169 "1.0 => same qscale for I and P frames)." )
171 #define ENC_NOISE_RED_TEXT N_( "Noise reduction" )
172 #define ENC_NOISE_RED_LONGTEXT N_( "Enable a simple noise " \
173 "reduction algorithm to lower the encoding length and bitrate, at the " \
174 "expense of lower quality frames." )
176 #define ENC_MPEG4_MATRIX_TEXT N_( "MPEG4 quantization matrix" )
177 #define ENC_MPEG4_MATRIX_LONGTEXT N_( "Use the MPEG4 " \
178 "quantization matrix for MPEG2 encoding. This generally yields a " \
179 "better looking picture, while still retaining the compatibility with " \
180 "standard MPEG2 decoders.")
182 #define ENC_HQ_TEXT N_( "Quality level" )
183 #define ENC_HQ_LONGTEXT N_( "Quality level " \
184 "for the encoding of motions vectors (this can slow down the encoding " \
187 #define ENC_HURRYUP_TEXT N_( "Hurry up" )
188 #define ENC_HURRYUP_LONGTEXT N_( "The encoder " \
189 "can make on-the-fly quality tradeoffs if your CPU can't keep up with " \
190 "the encoding rate. It will disable trellis quantization, then the rate " \
191 "distortion of motion vectors (hq), and raise the noise reduction " \
192 "threshold to ease the encoder's task." )
194 #define ENC_QMIN_TEXT N_( "Minimum video quantizer scale" )
195 #define ENC_QMIN_LONGTEXT N_( "Minimum video " \
198 #define ENC_QMAX_TEXT N_( "Maximum video quantizer scale" )
199 #define ENC_QMAX_LONGTEXT N_( "Maximum video " \
202 #define ENC_TRELLIS_TEXT N_( "Trellis quantization" )
203 #define ENC_TRELLIS_LONGTEXT N_( "Enable trellis " \
204 "quantization (rate distortion for block coefficients)." )
206 #define ENC_QSCALE_TEXT N_( "Fixed quantizer scale" )
207 #define ENC_QSCALE_LONGTEXT N_( "A fixed video " \
208 "quantizer scale for VBR encoding (accepted values: 0.01 to 255.0)." )
210 #define ENC_STRICT_TEXT N_( "Strict standard compliance" )
211 #define ENC_STRICT_LONGTEXT N_( "Force a strict standard " \
212 "compliance when encoding (accepted values: -1, 0, 1)." )
214 #define ENC_LUMI_MASKING_TEXT N_( "Luminance masking" )
215 #define ENC_LUMI_MASKING_LONGTEXT N_( "Raise the quantizer for " \
216 "very bright macroblocks (default: 0.0)." )
218 #define ENC_DARK_MASKING_TEXT N_( "Darkness masking" )
219 #define ENC_DARK_MASKING_LONGTEXT N_( "Raise the quantizer for " \
220 "very dark macroblocks (default: 0.0)." )
222 #define ENC_P_MASKING_TEXT N_( "Motion masking" )
223 #define ENC_P_MASKING_LONGTEXT N_( "Raise the quantizer for " \
224 "macroblocks with a high temporal complexity (default: 0.0)." )
226 #define ENC_BORDER_MASKING_TEXT N_( "Border masking" )
227 #define ENC_BORDER_MASKING_LONGTEXT N_( "Raise the quantizer " \
228 "for macroblocks at the border of the frame (default: 0.0)." )
230 #define ENC_LUMA_ELIM_TEXT N_( "Luminance elimination" )
231 #define ENC_LUMA_ELIM_LONGTEXT N_( "Eliminates luminance blocks when " \
232 "the PSNR isn't much changed (default: 0.0). The H264 specification " \
235 #define ENC_CHROMA_ELIM_TEXT N_( "Chrominance elimination" )
236 #define ENC_CHROMA_ELIM_LONGTEXT N_( "Eliminates chrominance blocks when " \
237 "the PSNR isn't much changed (default: 0.0). The H264 specification " \
240 #if LIBAVCODEC_VERSION_INT >= ((51<<16)+(40<<8)+4)
241 #define ENC_PROFILE_TEXT N_( "Specify AAC audio profile to use" )
242 #define ENC_PROFILE_LONGTEXT N_( "Specify the AAC audio profile to use " \
243 "for encoding the audio bitstream. It takes the following options: " \
244 "main, low, ssr (not supported) and ltp (default: main)" )
247 #define FFMPEG_COMMON_MEMBERS \
250 const char *psz_namecodec; \
251 AVCodecContext *p_context; \
255 #ifndef AV_VERSION_INT
256 # define AV_VERSION_INT(a, b, c) ((a)<<16 | (b)<<8 | (c))