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 /*****************************************************************************
62 * Module descriptor help strings
63 *****************************************************************************/
64 #define DR_TEXT N_("Direct rendering")
65 /* FIXME Does somebody who knows what it does, explain */
66 #define DR_LONGTEXT N_("Direct rendering")
68 #define ERROR_TEXT N_("Error resilience")
69 #define ERROR_LONGTEXT N_( \
70 "Ffmpeg can do error resilience.\n" \
71 "However, with a buggy encoder (such as the ISO MPEG-4 encoder from M$) " \
72 "this can produce a lot of errors.\n" \
73 "Valid values range from 0 to 4 (0 disables all errors resilience).")
75 #define BUGS_TEXT N_("Workaround bugs")
76 #define BUGS_LONGTEXT N_( \
77 "Try to fix some bugs:\n" \
80 "4 xvid interlaced\n" \
85 "This must be the sum of the values. For example, to fix \"ac vlc\" and " \
86 "\"ump4\", enter 40.")
88 #define HURRYUP_TEXT N_("Hurry up")
89 #define HURRYUP_LONGTEXT N_( \
90 "The decoder can partially decode or skip frame(s) " \
91 "when there is not enough time. It's useful with low CPU power " \
92 "but it can produce distorted pictures.")
94 #define FAST_TEXT N_("Allow speed tricks")
95 #define FAST_LONGTEXT N_( \
96 "Allow non specification compliant speedup tricks. Faster but error-prone.")
98 #define SKIP_FRAME_TEXT N_("Skip frame (default=0)")
99 #define SKIP_FRAME_LONGTEXT N_( \
100 "Force skipping of frames to speed up decoding " \
101 "(-1=None, 0=Default, 1=B-frames, 2=P-frames, 3=B+P frames, 4=all frames)." )
103 #define SKIP_IDCT_TEXT N_("Skip idct (default=0)")
104 #define SKIP_IDCT_LONGTEXT N_( \
105 "Force skipping of idct to speed up decoding for frame types" \
106 "(-1=None, 0=Default, 1=B-frames, 2=P-frames, 3=B+P frames, 4=all frames)." )
108 #define DEBUG_TEXT N_( "Debug mask" )
109 #define DEBUG_LONGTEXT N_( "Set ffmpeg debug mask" )
111 /* TODO: Use a predefined list, with 0,1,2,4,7 */
112 #define VISMV_TEXT N_( "Visualize motion vectors" )
113 #define VISMV_LONGTEXT N_( \
114 "You can overlay the motion vectors (arrows showing how the images move) "\
115 "on the image. This value is a mask, based on these values:\n"\
116 "1 - visualize forward predicted MVs of P frames\n" \
117 "2 - visualize forward predicted MVs of B frames\n" \
118 "4 - visualize backward predicted MVs of B frames\n" \
119 "To visualize all vectors, the value should be 7." )
121 #define LOWRES_TEXT N_( "Low resolution decoding" )
122 #define LOWRES_LONGTEXT N_( "Only decode a low resolution version of " \
123 "the video. This requires less processing power" )
125 #define SKIPLOOPF_TEXT N_( "Skip the loop filter for H.264 decoding" )
126 #define SKIPLOOPF_LONGTEXT N_( "Skipping the loop filter (aka deblocking) " \
127 "usually has a detrimental effect on quality. However it provides a big " \
128 "speedup for high definition streams." )
133 #define ENC_CFG_PREFIX "sout-ffmpeg-"
135 #define ENC_KEYINT_TEXT N_( "Ratio of key frames" )
136 #define ENC_KEYINT_LONGTEXT N_( "Number of frames " \
137 "that will be coded for one key frame." )
139 #define ENC_BFRAMES_TEXT N_( "Ratio of B frames" )
140 #define ENC_BFRAMES_LONGTEXT N_( "Number of " \
141 "B frames that will be coded between two reference frames." )
143 #define ENC_VT_TEXT N_( "Video bitrate tolerance" )
144 #define ENC_VT_LONGTEXT N_( "Video bitrate tolerance in kbit/s." )
146 #define ENC_INTERLACE_TEXT N_( "Interlaced encoding" )
147 #define ENC_INTERLACE_LONGTEXT N_( "Enable dedicated " \
148 "algorithms for interlaced frames." )
150 #define ENC_INTERLACE_ME_TEXT N_( "Interlaced motion estimation" )
151 #define ENC_INTERLACE_ME_LONGTEXT N_( "Enable interlaced " \
152 "motion estimation algorithms. This requires more CPU." )
154 #define ENC_PRE_ME_TEXT N_( "Pre-motion estimation" )
155 #define ENC_PRE_ME_LONGTEXT N_( "Enable the pre-motion " \
156 "estimation algorithm.")
158 #define ENC_RC_BUF_TEXT N_( "Rate control buffer size" )
159 #define ENC_RC_BUF_LONGTEXT N_( "Rate control " \
160 "buffer size (in kbytes). A bigger buffer will allow for better rate " \
161 "control, but will cause a delay in the stream." )
163 #define ENC_RC_BUF_AGGR_TEXT N_( "Rate control buffer aggressiveness" )
164 #define ENC_RC_BUF_AGGR_LONGTEXT N_( "Rate control "\
165 "buffer aggressiveness." )
167 #define ENC_IQUANT_FACTOR_TEXT N_( "I quantization factor" )
168 #define ENC_IQUANT_FACTOR_LONGTEXT N_( \
169 "Quantization factor of I frames, compared with P frames (for instance " \
170 "1.0 => same qscale for I and P frames)." )
172 #define ENC_NOISE_RED_TEXT N_( "Noise reduction" )
173 #define ENC_NOISE_RED_LONGTEXT N_( "Enable a simple noise " \
174 "reduction algorithm to lower the encoding length and bitrate, at the " \
175 "expense of lower quality frames." )
177 #define ENC_MPEG4_MATRIX_TEXT N_( "MPEG4 quantization matrix" )
178 #define ENC_MPEG4_MATRIX_LONGTEXT N_( "Use the MPEG4 " \
179 "quantization matrix for MPEG2 encoding. This generally yields a " \
180 "better looking picture, while still retaining the compatibility with " \
181 "standard MPEG2 decoders.")
183 #define ENC_HQ_TEXT N_( "Quality level" )
184 #define ENC_HQ_LONGTEXT N_( "Quality level " \
185 "for the encoding of motions vectors (this can slow down the encoding " \
188 #define ENC_HURRYUP_TEXT N_( "Hurry up" )
189 #define ENC_HURRYUP_LONGTEXT N_( "The encoder " \
190 "can make on-the-fly quality tradeoffs if your CPU can't keep up with " \
191 "the encoding rate. It will disable trellis quantization, then the rate " \
192 "distortion of motion vectors (hq), and raise the noise reduction " \
193 "threshold to ease the encoder's task." )
195 #define ENC_QMIN_TEXT N_( "Minimum video quantizer scale" )
196 #define ENC_QMIN_LONGTEXT N_( "Minimum video " \
199 #define ENC_QMAX_TEXT N_( "Maximum video quantizer scale" )
200 #define ENC_QMAX_LONGTEXT N_( "Maximum video " \
203 #define ENC_TRELLIS_TEXT N_( "Trellis quantization" )
204 #define ENC_TRELLIS_LONGTEXT N_( "Enable trellis " \
205 "quantization (rate distortion for block coefficients)." )
207 #define ENC_QSCALE_TEXT N_( "Fixed quantizer scale" )
208 #define ENC_QSCALE_LONGTEXT N_( "A fixed video " \
209 "quantizer scale for VBR encoding (accepted values: 0.01 to 255.0)." )
211 #define ENC_STRICT_TEXT N_( "Strict standard compliance" )
212 #define ENC_STRICT_LONGTEXT N_( "Force a strict standard " \
213 "compliance when encoding (accepted values: -1, 0, 1)." )
215 #define ENC_LUMI_MASKING_TEXT N_( "Luminance masking" )
216 #define ENC_LUMI_MASKING_LONGTEXT N_( "Raise the quantizer for " \
217 "very bright macroblocks (default: 0.0)." )
219 #define ENC_DARK_MASKING_TEXT N_( "Darkness masking" )
220 #define ENC_DARK_MASKING_LONGTEXT N_( "Raise the quantizer for " \
221 "very dark macroblocks (default: 0.0)." )
223 #define ENC_P_MASKING_TEXT N_( "Motion masking" )
224 #define ENC_P_MASKING_LONGTEXT N_( "Raise the quantizer for " \
225 "macroblocks with a high temporal complexity (default: 0.0)." )
227 #define ENC_BORDER_MASKING_TEXT N_( "Border masking" )
228 #define ENC_BORDER_MASKING_LONGTEXT N_( "Raise the quantizer " \
229 "for macroblocks at the border of the frame (default: 0.0)." )
231 #define ENC_LUMA_ELIM_TEXT N_( "Luminance elimination" )
232 #define ENC_LUMA_ELIM_LONGTEXT N_( "Eliminates luminance blocks when " \
233 "the PSNR isn't much changed (default: 0.0). The H264 specification " \
236 #define ENC_CHROMA_ELIM_TEXT N_( "Chrominance elimination" )
237 #define ENC_CHROMA_ELIM_LONGTEXT N_( "Eliminates chrominance blocks when " \
238 "the PSNR isn't much changed (default: 0.0). The H264 specification " \
241 #if LIBAVCODEC_VERSION_INT >= ((51<<16)+(40<<8)+4)
242 #define ENC_PROFILE_TEXT N_( "Specify AAC audio profile to use" )
243 #define ENC_PROFILE_LONGTEXT N_( "Specify the AAC audio profile to use " \
244 "for encoding the audio bitstream. It takes the following options: " \
245 "main, low, ssr (not supported) and ltp (default: main)" )
248 #define FFMPEG_COMMON_MEMBERS \
251 const char *psz_namecodec; \
252 AVCodecContext *p_context; \
256 #ifndef AV_VERSION_INT
257 # define AV_VERSION_INT(a, b, c) ((a)<<16 | (b)<<8 | (c))