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 picture_t * DecodeVideo ( decoder_t *, block_t ** );
25 aout_buffer_t * DecodeAudio( decoder_t *, block_t ** );
27 /* Video encoder module */
28 int OpenEncoder ( vlc_object_t * );
29 void CloseEncoder( vlc_object_t * );
31 /* Audio encoder module */
32 int OpenAudioEncoder ( vlc_object_t * );
33 void CloseAudioEncoder( vlc_object_t * );
35 /* Deinterlace video filter module */
36 int OpenDeinterlace( vlc_object_t * );
37 void CloseDeinterlace( vlc_object_t * );
39 void InitLibavcodec( vlc_object_t *p_object );
42 int InitVideoDec( decoder_t *p_dec, AVCodecContext *p_context,
43 AVCodec *p_codec, int i_codec_id, const char *psz_namecodec );
44 void EndVideoDec( decoder_t *p_dec );
47 int InitAudioDec( decoder_t *p_dec, AVCodecContext *p_context,
48 AVCodec *p_codec, int i_codec_id, const char *psz_namecodec );
49 void EndAudioDec( decoder_t *p_dec );
51 /*****************************************************************************
52 * Module descriptor help strings
53 *****************************************************************************/
54 #define DR_TEXT N_("Direct rendering")
55 /* FIXME Does somebody who knows what it does, explain */
56 #define DR_LONGTEXT N_("Direct rendering")
58 #define ERROR_TEXT N_("Error resilience")
59 #define ERROR_LONGTEXT N_( \
60 "Ffmpeg can do error resilience.\n" \
61 "However, with a buggy encoder (such as the ISO MPEG-4 encoder from M$) " \
62 "this can produce a lot of errors.\n" \
63 "Valid values range from 0 to 4 (0 disables all errors resilience).")
65 #define BUGS_TEXT N_("Workaround bugs")
66 #define BUGS_LONGTEXT N_( \
67 "Try to fix some bugs:\n" \
70 "4 xvid interlaced\n" \
75 "This must be the sum of the values. For example, to fix \"ac vlc\" and " \
76 "\"ump4\", enter 40.")
78 #define HURRYUP_TEXT N_("Hurry up")
79 #define HURRYUP_LONGTEXT N_( \
80 "The decoder can partially decode or skip frame(s) " \
81 "when there is not enough time. It's useful with low CPU power " \
82 "but it can produce distorted pictures.")
84 #define SKIP_FRAME_TEXT N_("Skip frame (default=0)")
85 #define SKIP_FRAME_LONGTEXT N_( \
86 "Force skipping of frames to speed up decoding " \
87 "(-1=None, 0=Default, 1=B-frames, 2=P-frames, 3=B+P frames, 4=all frames)." )
89 #define SKIP_IDCT_TEXT N_("Skip idct (default=0)")
90 #define SKIP_IDCT_LONGTEXT N_( \
91 "Force skipping of idct to speed up decoding for frame types" \
92 "(-1=None, 0=Default, 1=B-frames, 2=P-frames, 3=B+P frames, 4=all frames)." )
94 #define DEBUG_TEXT N_( "Debug mask" )
95 #define DEBUG_LONGTEXT N_( "Set ffmpeg debug mask" )
97 /* TODO: Use a predefined list, with 0,1,2,4,7 */
98 #define VISMV_TEXT N_( "Visualize motion vectors" )
99 #define VISMV_LONGTEXT N_( \
100 "You can overlay the motion vectors (arrows showing how the images move) "\
101 "on the image. This value is a mask, based on these values:\n"\
102 "1 - visualize forward predicted MVs of P frames\n" \
103 "2 - visualize forward predicted MVs of B frames\n" \
104 "4 - visualize backward predicted MVs of B frames\n" \
105 "To visualize all vectors, the value should be 7." )
107 #define LOWRES_TEXT N_( "Low resolution decoding" )
108 #define LOWRES_LONGTEXT N_( "Only decode a low resolution version of " \
109 "the video. This requires less processing power" )
111 #define SKIPLOOPF_TEXT N_( "Skip the loop filter for H.264 decoding" )
112 #define SKIPLOOPF_LONGTEXT N_( "Skipping the loop filter (aka deblocking) " \
113 "usually has a detrimental effect on quality. However it provides a big " \
114 "speedup for high definition streams." )
119 #define ENC_CFG_PREFIX "sout-ffmpeg-"
121 #define ENC_KEYINT_TEXT N_( "Ratio of key frames" )
122 #define ENC_KEYINT_LONGTEXT N_( "Number of frames " \
123 "that will be coded for one key frame." )
125 #define ENC_BFRAMES_TEXT N_( "Ratio of B frames" )
126 #define ENC_BFRAMES_LONGTEXT N_( "Number of " \
127 "B frames that will be coded between two reference frames." )
129 #define ENC_VT_TEXT N_( "Video bitrate tolerance" )
130 #define ENC_VT_LONGTEXT N_( "Video bitrate tolerance in kbit/s." )
132 #define ENC_INTERLACE_TEXT N_( "Interlaced encoding" )
133 #define ENC_INTERLACE_LONGTEXT N_( "Enable dedicated " \
134 "algorithms for interlaced frames." )
136 #define ENC_INTERLACE_ME_TEXT N_( "Interlaced motion estimation" )
137 #define ENC_INTERLACE_ME_LONGTEXT N_( "Enable interlaced " \
138 "motion estimation algorithms. This requires more CPU." )
140 #define ENC_PRE_ME_TEXT N_( "Pre-motion estimation" )
141 #define ENC_PRE_ME_LONGTEXT N_( "Enable the pre-motion " \
142 "estimation algorithm.")
144 #define ENC_RC_STRICT_TEXT N_( "Strict rate control" )
145 #define ENC_RC_STRICT_LONGTEXT N_( "Enable the strict rate " \
146 "control algorithm." )
148 #define ENC_RC_BUF_TEXT N_( "Rate control buffer size" )
149 #define ENC_RC_BUF_LONGTEXT N_( "Rate control " \
150 "buffer size (in kbytes). A bigger buffer will allow for better rate " \
151 "control, but will cause a delay in the stream." )
153 #define ENC_RC_BUF_AGGR_TEXT N_( "Rate control buffer aggressiveness" )
154 #define ENC_RC_BUF_AGGR_LONGTEXT N_( "Rate control "\
155 "buffer aggressiveness." )
157 #define ENC_IQUANT_FACTOR_TEXT N_( "I quantization factor" )
158 #define ENC_IQUANT_FACTOR_LONGTEXT N_( \
159 "Quantization factor of I frames, compared with P frames (for instance " \
160 "1.0 => same qscale for I and P frames)." )
162 #define ENC_NOISE_RED_TEXT N_( "Noise reduction" )
163 #define ENC_NOISE_RED_LONGTEXT N_( "Enable a simple noise " \
164 "reduction algorithm to lower the encoding length and bitrate, at the " \
165 "expense of lower quality frames." )
167 #define ENC_MPEG4_MATRIX_TEXT N_( "MPEG4 quantization matrix" )
168 #define ENC_MPEG4_MATRIX_LONGTEXT N_( "Use the MPEG4 " \
169 "quantization matrix for MPEG2 encoding. This generally yields a " \
170 "better looking picture, while still retaining the compatibility with " \
171 "standard MPEG2 decoders.")
173 #define ENC_HQ_TEXT N_( "Quality level" )
174 #define ENC_HQ_LONGTEXT N_( "Quality level " \
175 "for the encoding of motions vectors (this can slow down the encoding " \
178 #define ENC_HURRYUP_TEXT N_( "Hurry up" )
179 #define ENC_HURRYUP_LONGTEXT N_( "The encoder " \
180 "can make on-the-fly quality tradeoffs if your CPU can't keep up with " \
181 "the encoding rate. It will disable trellis quantization, then the rate " \
182 "distortion of motion vectors (hq), and raise the noise reduction " \
183 "threshold to ease the encoder's task." )
185 #define ENC_QMIN_TEXT N_( "Minimum video quantizer scale" )
186 #define ENC_QMIN_LONGTEXT N_( "Minimum video " \
189 #define ENC_QMAX_TEXT N_( "Maximum video quantizer scale" )
190 #define ENC_QMAX_LONGTEXT N_( "Maximum video " \
193 #define ENC_TRELLIS_TEXT N_( "Trellis quantization" )
194 #define ENC_TRELLIS_LONGTEXT N_( "Enable trellis " \
195 "quantization (rate distortion for block coefficients)." )
197 #define ENC_QSCALE_TEXT N_( "Fixed quantizer scale" )
198 #define ENC_QSCALE_LONGTEXT N_( "A fixed video " \
199 "quantizer scale for VBR encoding (accepted values: 0.01 to 255.0)." )
201 #define ENC_STRICT_TEXT N_( "Strict standard compliance" )
202 #define ENC_STRICT_LONGTEXT N_( "Force a strict standard " \
203 "compliance when encoding (accepted values: -1, 0, 1)." )
205 #define ENC_LUMI_MASKING_TEXT N_( "Luminance masking" )
206 #define ENC_LUMI_MASKING_LONGTEXT N_( "Raise the quantizer for " \
207 "very bright macroblocks (default: 0.0)." )
209 #define ENC_DARK_MASKING_TEXT N_( "Darkness masking" )
210 #define ENC_DARK_MASKING_LONGTEXT N_( "Raise the quantizer for " \
211 "very dark macroblocks (default: 0.0)." )
213 #define ENC_P_MASKING_TEXT N_( "Motion masking" )
214 #define ENC_P_MASKING_LONGTEXT N_( "Raise the quantizer for " \
215 "macroblocks with a high temporal complexity (default: 0.0)." )
217 #define ENC_BORDER_MASKING_TEXT N_( "Border masking" )
218 #define ENC_BORDER_MASKING_LONGTEXT N_( "Raise the quantizer " \
219 "for macroblocks at the border of the frame (default: 0.0)." )
221 #define ENC_LUMA_ELIM_TEXT N_( "Luminance elimination" )
222 #define ENC_LUMA_ELIM_LONGTEXT N_( "Eliminates luminance blocks when " \
223 "the PSNR isn't much changed (default: 0.0). The H264 specification " \
226 #define ENC_CHROMA_ELIM_TEXT N_( "Chrominance elimination" )
227 #define ENC_CHROMA_ELIM_LONGTEXT N_( "Eliminates chrominance blocks when " \
228 "the PSNR isn't much changed (default: 0.0). The H264 specification " \
231 #if LIBAVCODEC_VERSION_INT >= ((51<<16)+(40<<8)+4)
232 #define ENC_PROFILE_TEXT N_( "Specify AAC audio profile to use" )
233 #define ENC_PROFILE_LONGTEXT N_( "Specify the AAC audio profile to use " \
234 "for encoding the audio bitstream. It takes the following options: " \
235 "main, low, ssr (not supported) and ltp (default: main)" )
238 #define FFMPEG_COMMON_MEMBERS \
241 const char *psz_namecodec; \
242 AVCodecContext *p_context; \