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 /* Avcodec global lock */
52 extern vlc_mutex_t avcodec_lock;
54 /*****************************************************************************
55 * Module descriptor help strings
56 *****************************************************************************/
57 #define DR_TEXT N_("Direct rendering")
58 /* FIXME Does somebody who knows what it does, explain */
59 #define DR_LONGTEXT N_("Direct rendering")
61 #define ERROR_TEXT N_("Error resilience")
62 #define ERROR_LONGTEXT N_( \
63 "Ffmpeg can do error resilience.\n" \
64 "However, with a buggy encoder (such as the ISO MPEG-4 encoder from M$) " \
65 "this can produce a lot of errors.\n" \
66 "Valid values range from 0 to 4 (0 disables all errors resilience).")
68 #define BUGS_TEXT N_("Workaround bugs")
69 #define BUGS_LONGTEXT N_( \
70 "Try to fix some bugs:\n" \
73 "4 xvid interlaced\n" \
78 "This must be the sum of the values. For example, to fix \"ac vlc\" and " \
79 "\"ump4\", enter 40.")
81 #define HURRYUP_TEXT N_("Hurry up")
82 #define HURRYUP_LONGTEXT N_( \
83 "The decoder can partially decode or skip frame(s) " \
84 "when there is not enough time. It's useful with low CPU power " \
85 "but it can produce distorted pictures.")
87 #define SKIP_FRAME_TEXT N_("Skip frame (default=0)")
88 #define SKIP_FRAME_LONGTEXT N_( \
89 "Force skipping of frames to speed up decoding " \
90 "(-1=None, 0=Default, 1=B-frames, 2=P-frames, 3=B+P frames, 4=all frames)." )
92 #define SKIP_IDCT_TEXT N_("Skip idct (default=0)")
93 #define SKIP_IDCT_LONGTEXT N_( \
94 "Force skipping of idct to speed up decoding for frame types" \
95 "(-1=None, 0=Default, 1=B-frames, 2=P-frames, 3=B+P frames, 4=all frames)." )
97 #define DEBUG_TEXT N_( "Debug mask" )
98 #define DEBUG_LONGTEXT N_( "Set ffmpeg debug mask" )
100 /* TODO: Use a predefined list, with 0,1,2,4,7 */
101 #define VISMV_TEXT N_( "Visualize motion vectors" )
102 #define VISMV_LONGTEXT N_( \
103 "You can overlay the motion vectors (arrows showing how the images move) "\
104 "on the image. This value is a mask, based on these values:\n"\
105 "1 - visualize forward predicted MVs of P frames\n" \
106 "2 - visualize forward predicted MVs of B frames\n" \
107 "4 - visualize backward predicted MVs of B frames\n" \
108 "To visualize all vectors, the value should be 7." )
110 #define LOWRES_TEXT N_( "Low resolution decoding" )
111 #define LOWRES_LONGTEXT N_( "Only decode a low resolution version of " \
112 "the video. This requires less processing power" )
114 #define SKIPLOOPF_TEXT N_( "Skip the loop filter for H.264 decoding" )
115 #define SKIPLOOPF_LONGTEXT N_( "Skipping the loop filter (aka deblocking) " \
116 "usually has a detrimental effect on quality. However it provides a big " \
117 "speedup for high definition streams." )
122 #define ENC_CFG_PREFIX "sout-ffmpeg-"
124 #define ENC_KEYINT_TEXT N_( "Ratio of key frames" )
125 #define ENC_KEYINT_LONGTEXT N_( "Number of frames " \
126 "that will be coded for one key frame." )
128 #define ENC_BFRAMES_TEXT N_( "Ratio of B frames" )
129 #define ENC_BFRAMES_LONGTEXT N_( "Number of " \
130 "B frames that will be coded between two reference frames." )
132 #define ENC_VT_TEXT N_( "Video bitrate tolerance" )
133 #define ENC_VT_LONGTEXT N_( "Video bitrate tolerance in kbit/s." )
135 #define ENC_INTERLACE_TEXT N_( "Interlaced encoding" )
136 #define ENC_INTERLACE_LONGTEXT N_( "Enable dedicated " \
137 "algorithms for interlaced frames." )
139 #define ENC_INTERLACE_ME_TEXT N_( "Interlaced motion estimation" )
140 #define ENC_INTERLACE_ME_LONGTEXT N_( "Enable interlaced " \
141 "motion estimation algorithms. This requires more CPU." )
143 #define ENC_PRE_ME_TEXT N_( "Pre-motion estimation" )
144 #define ENC_PRE_ME_LONGTEXT N_( "Enable the pre-motion " \
145 "estimation algorithm.")
147 #define ENC_RC_BUF_TEXT N_( "Rate control buffer size" )
148 #define ENC_RC_BUF_LONGTEXT N_( "Rate control " \
149 "buffer size (in kbytes). A bigger buffer will allow for better rate " \
150 "control, but will cause a delay in the stream." )
152 #define ENC_RC_BUF_AGGR_TEXT N_( "Rate control buffer aggressiveness" )
153 #define ENC_RC_BUF_AGGR_LONGTEXT N_( "Rate control "\
154 "buffer aggressiveness." )
156 #define ENC_IQUANT_FACTOR_TEXT N_( "I quantization factor" )
157 #define ENC_IQUANT_FACTOR_LONGTEXT N_( \
158 "Quantization factor of I frames, compared with P frames (for instance " \
159 "1.0 => same qscale for I and P frames)." )
161 #define ENC_NOISE_RED_TEXT N_( "Noise reduction" )
162 #define ENC_NOISE_RED_LONGTEXT N_( "Enable a simple noise " \
163 "reduction algorithm to lower the encoding length and bitrate, at the " \
164 "expense of lower quality frames." )
166 #define ENC_MPEG4_MATRIX_TEXT N_( "MPEG4 quantization matrix" )
167 #define ENC_MPEG4_MATRIX_LONGTEXT N_( "Use the MPEG4 " \
168 "quantization matrix for MPEG2 encoding. This generally yields a " \
169 "better looking picture, while still retaining the compatibility with " \
170 "standard MPEG2 decoders.")
172 #define ENC_HQ_TEXT N_( "Quality level" )
173 #define ENC_HQ_LONGTEXT N_( "Quality level " \
174 "for the encoding of motions vectors (this can slow down the encoding " \
177 #define ENC_HURRYUP_TEXT N_( "Hurry up" )
178 #define ENC_HURRYUP_LONGTEXT N_( "The encoder " \
179 "can make on-the-fly quality tradeoffs if your CPU can't keep up with " \
180 "the encoding rate. It will disable trellis quantization, then the rate " \
181 "distortion of motion vectors (hq), and raise the noise reduction " \
182 "threshold to ease the encoder's task." )
184 #define ENC_QMIN_TEXT N_( "Minimum video quantizer scale" )
185 #define ENC_QMIN_LONGTEXT N_( "Minimum video " \
188 #define ENC_QMAX_TEXT N_( "Maximum video quantizer scale" )
189 #define ENC_QMAX_LONGTEXT N_( "Maximum video " \
192 #define ENC_TRELLIS_TEXT N_( "Trellis quantization" )
193 #define ENC_TRELLIS_LONGTEXT N_( "Enable trellis " \
194 "quantization (rate distortion for block coefficients)." )
196 #define ENC_QSCALE_TEXT N_( "Fixed quantizer scale" )
197 #define ENC_QSCALE_LONGTEXT N_( "A fixed video " \
198 "quantizer scale for VBR encoding (accepted values: 0.01 to 255.0)." )
200 #define ENC_STRICT_TEXT N_( "Strict standard compliance" )
201 #define ENC_STRICT_LONGTEXT N_( "Force a strict standard " \
202 "compliance when encoding (accepted values: -1, 0, 1)." )
204 #define ENC_LUMI_MASKING_TEXT N_( "Luminance masking" )
205 #define ENC_LUMI_MASKING_LONGTEXT N_( "Raise the quantizer for " \
206 "very bright macroblocks (default: 0.0)." )
208 #define ENC_DARK_MASKING_TEXT N_( "Darkness masking" )
209 #define ENC_DARK_MASKING_LONGTEXT N_( "Raise the quantizer for " \
210 "very dark macroblocks (default: 0.0)." )
212 #define ENC_P_MASKING_TEXT N_( "Motion masking" )
213 #define ENC_P_MASKING_LONGTEXT N_( "Raise the quantizer for " \
214 "macroblocks with a high temporal complexity (default: 0.0)." )
216 #define ENC_BORDER_MASKING_TEXT N_( "Border masking" )
217 #define ENC_BORDER_MASKING_LONGTEXT N_( "Raise the quantizer " \
218 "for macroblocks at the border of the frame (default: 0.0)." )
220 #define ENC_LUMA_ELIM_TEXT N_( "Luminance elimination" )
221 #define ENC_LUMA_ELIM_LONGTEXT N_( "Eliminates luminance blocks when " \
222 "the PSNR isn't much changed (default: 0.0). The H264 specification " \
225 #define ENC_CHROMA_ELIM_TEXT N_( "Chrominance elimination" )
226 #define ENC_CHROMA_ELIM_LONGTEXT N_( "Eliminates chrominance blocks when " \
227 "the PSNR isn't much changed (default: 0.0). The H264 specification " \
230 #if LIBAVCODEC_VERSION_INT >= ((51<<16)+(40<<8)+4)
231 #define ENC_PROFILE_TEXT N_( "Specify AAC audio profile to use" )
232 #define ENC_PROFILE_LONGTEXT N_( "Specify the AAC audio profile to use " \
233 "for encoding the audio bitstream. It takes the following options: " \
234 "main, low, ssr (not supported) and ltp (default: main)" )
237 #define FFMPEG_COMMON_MEMBERS \
240 const char *psz_namecodec; \
241 AVCodecContext *p_context; \