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 );
32 void GetVlcAudioFormat( vlc_fourcc_t *, unsigned *pi_bits, int i_sample_fmt );
35 picture_t * DecodeVideo ( decoder_t *, block_t ** );
36 aout_buffer_t * DecodeAudio( decoder_t *, block_t ** );
37 subpicture_t *DecodeSubtitle( decoder_t *p_dec, block_t ** );
39 /* Video encoder module */
40 int OpenEncoder ( vlc_object_t * );
41 void CloseEncoder( vlc_object_t * );
43 /* Audio encoder module */
44 int OpenAudioEncoder ( vlc_object_t * );
45 void CloseAudioEncoder( vlc_object_t * );
47 /* Deinterlace video filter module */
48 int OpenDeinterlace( vlc_object_t * );
49 void CloseDeinterlace( vlc_object_t * );
51 void InitLibavcodec( vlc_object_t *p_object );
54 int InitVideoDec( decoder_t *p_dec, AVCodecContext *p_context,
55 AVCodec *p_codec, int i_codec_id, const char *psz_namecodec );
56 void EndVideoDec( decoder_t *p_dec );
59 int InitAudioDec( decoder_t *p_dec, AVCodecContext *p_context,
60 AVCodec *p_codec, int i_codec_id, const char *psz_namecodec );
61 void EndAudioDec( decoder_t *p_dec );
63 /* Subtitle Decoder */
64 int InitSubtitleDec( decoder_t *p_dec, AVCodecContext *p_context,
65 AVCodec *p_codec, int i_codec_id, const char *psz_namecodec );
66 void EndSubtitleDec( decoder_t *p_dec );
69 /*****************************************************************************
70 * Module descriptor help strings
71 *****************************************************************************/
72 #define DR_TEXT N_("Direct rendering")
73 /* FIXME Does somebody who knows what it does, explain */
74 #define DR_LONGTEXT N_("Direct rendering")
76 #define ERROR_TEXT N_("Error resilience")
77 #define ERROR_LONGTEXT N_( \
78 "FFmpeg can do error resilience.\n" \
79 "However, with a buggy encoder (such as the ISO MPEG-4 encoder from M$) " \
80 "this can produce a lot of errors.\n" \
81 "Valid values range from 0 to 4 (0 disables all errors resilience).")
83 #define BUGS_TEXT N_("Workaround bugs")
84 #define BUGS_LONGTEXT N_( \
85 "Try to fix some bugs:\n" \
88 "4 xvid interlaced\n" \
93 "This must be the sum of the values. For example, to fix \"ac vlc\" and " \
94 "\"ump4\", enter 40.")
96 #define HURRYUP_TEXT N_("Hurry up")
97 #define HURRYUP_LONGTEXT N_( \
98 "The decoder can partially decode or skip frame(s) " \
99 "when there is not enough time. It's useful with low CPU power " \
100 "but it can produce distorted pictures.")
102 #define FAST_TEXT N_("Allow speed tricks")
103 #define FAST_LONGTEXT N_( \
104 "Allow non specification compliant speedup tricks. Faster but error-prone.")
106 #define SKIP_FRAME_TEXT N_("Skip frame (default=0)")
107 #define SKIP_FRAME_LONGTEXT N_( \
108 "Force skipping of frames to speed up decoding " \
109 "(-1=None, 0=Default, 1=B-frames, 2=P-frames, 3=B+P frames, 4=all frames)." )
111 #define SKIP_IDCT_TEXT N_("Skip idct (default=0)")
112 #define SKIP_IDCT_LONGTEXT N_( \
113 "Force skipping of idct to speed up decoding for frame types" \
114 "(-1=None, 0=Default, 1=B-frames, 2=P-frames, 3=B+P frames, 4=all frames)." )
116 #define DEBUG_TEXT N_( "Debug mask" )
117 #define DEBUG_LONGTEXT N_( "Set FFmpeg debug mask" )
119 /* TODO: Use a predefined list, with 0,1,2,4,7 */
120 #define VISMV_TEXT N_( "Visualize motion vectors" )
121 #define VISMV_LONGTEXT N_( \
122 "You can overlay the motion vectors (arrows showing how the images move) "\
123 "on the image. This value is a mask, based on these values:\n"\
124 "1 - visualize forward predicted MVs of P frames\n" \
125 "2 - visualize forward predicted MVs of B frames\n" \
126 "4 - visualize backward predicted MVs of B frames\n" \
127 "To visualize all vectors, the value should be 7." )
129 #define LOWRES_TEXT N_( "Low resolution decoding" )
130 #define LOWRES_LONGTEXT N_( "Only decode a low resolution version of " \
131 "the video. This requires less processing power" )
133 #define SKIPLOOPF_TEXT N_( "Skip the loop filter for H.264 decoding" )
134 #define SKIPLOOPF_LONGTEXT N_( "Skipping the loop filter (aka deblocking) " \
135 "usually has a detrimental effect on quality. However it provides a big " \
136 "speedup for high definition streams." )
138 #define HW_TEXT N_("Hardware decoding")
139 #define HW_LONGTEXT N_("This allows hardware decoding when available.")
141 #define THREADS_TEXT N_( "Threads" )
142 #define THREADS_LONGTEXT N_( "Number of threads used for decoding, 0 meaning auto" )
147 #define ENC_CFG_PREFIX "sout-ffmpeg-"
149 #define ENC_KEYINT_TEXT N_( "Ratio of key frames" )
150 #define ENC_KEYINT_LONGTEXT N_( "Number of frames " \
151 "that will be coded for one key frame." )
153 #define ENC_BFRAMES_TEXT N_( "Ratio of B frames" )
154 #define ENC_BFRAMES_LONGTEXT N_( "Number of " \
155 "B frames that will be coded between two reference frames." )
157 #define ENC_VT_TEXT N_( "Video bitrate tolerance" )
158 #define ENC_VT_LONGTEXT N_( "Video bitrate tolerance in kbit/s." )
160 #define ENC_INTERLACE_TEXT N_( "Interlaced encoding" )
161 #define ENC_INTERLACE_LONGTEXT N_( "Enable dedicated " \
162 "algorithms for interlaced frames." )
164 #define ENC_INTERLACE_ME_TEXT N_( "Interlaced motion estimation" )
165 #define ENC_INTERLACE_ME_LONGTEXT N_( "Enable interlaced " \
166 "motion estimation algorithms. This requires more CPU." )
168 #define ENC_PRE_ME_TEXT N_( "Pre-motion estimation" )
169 #define ENC_PRE_ME_LONGTEXT N_( "Enable the pre-motion " \
170 "estimation algorithm.")
172 #define ENC_RC_BUF_TEXT N_( "Rate control buffer size" )
173 #define ENC_RC_BUF_LONGTEXT N_( "Rate control " \
174 "buffer size (in kbytes). A bigger buffer will allow for better rate " \
175 "control, but will cause a delay in the stream." )
177 #define ENC_RC_BUF_AGGR_TEXT N_( "Rate control buffer aggressiveness" )
178 #define ENC_RC_BUF_AGGR_LONGTEXT N_( "Rate control "\
179 "buffer aggressiveness." )
181 #define ENC_IQUANT_FACTOR_TEXT N_( "I quantization factor" )
182 #define ENC_IQUANT_FACTOR_LONGTEXT N_( \
183 "Quantization factor of I frames, compared with P frames (for instance " \
184 "1.0 => same qscale for I and P frames)." )
186 #define ENC_NOISE_RED_TEXT N_( "Noise reduction" )
187 #define ENC_NOISE_RED_LONGTEXT N_( "Enable a simple noise " \
188 "reduction algorithm to lower the encoding length and bitrate, at the " \
189 "expense of lower quality frames." )
191 #define ENC_MPEG4_MATRIX_TEXT N_( "MPEG4 quantization matrix" )
192 #define ENC_MPEG4_MATRIX_LONGTEXT N_( "Use the MPEG4 " \
193 "quantization matrix for MPEG2 encoding. This generally yields a " \
194 "better looking picture, while still retaining the compatibility with " \
195 "standard MPEG2 decoders.")
197 #define ENC_HQ_TEXT N_( "Quality level" )
198 #define ENC_HQ_LONGTEXT N_( "Quality level " \
199 "for the encoding of motions vectors (this can slow down the encoding " \
202 #define ENC_HURRYUP_TEXT N_( "Hurry up" )
203 #define ENC_HURRYUP_LONGTEXT N_( "The encoder " \
204 "can make on-the-fly quality tradeoffs if your CPU can't keep up with " \
205 "the encoding rate. It will disable trellis quantization, then the rate " \
206 "distortion of motion vectors (hq), and raise the noise reduction " \
207 "threshold to ease the encoder's task." )
209 #define ENC_QMIN_TEXT N_( "Minimum video quantizer scale" )
210 #define ENC_QMIN_LONGTEXT N_( "Minimum video " \
213 #define ENC_QMAX_TEXT N_( "Maximum video quantizer scale" )
214 #define ENC_QMAX_LONGTEXT N_( "Maximum video " \
217 #define ENC_TRELLIS_TEXT N_( "Trellis quantization" )
218 #define ENC_TRELLIS_LONGTEXT N_( "Enable trellis " \
219 "quantization (rate distortion for block coefficients)." )
221 #define ENC_QSCALE_TEXT N_( "Fixed quantizer scale" )
222 #define ENC_QSCALE_LONGTEXT N_( "A fixed video " \
223 "quantizer scale for VBR encoding (accepted values: 0.01 to 255.0)." )
225 #define ENC_STRICT_TEXT N_( "Strict standard compliance" )
226 #define ENC_STRICT_LONGTEXT N_( "Force a strict standard " \
227 "compliance when encoding (accepted values: -1, 0, 1)." )
229 #define ENC_LUMI_MASKING_TEXT N_( "Luminance masking" )
230 #define ENC_LUMI_MASKING_LONGTEXT N_( "Raise the quantizer for " \
231 "very bright macroblocks (default: 0.0)." )
233 #define ENC_DARK_MASKING_TEXT N_( "Darkness masking" )
234 #define ENC_DARK_MASKING_LONGTEXT N_( "Raise the quantizer for " \
235 "very dark macroblocks (default: 0.0)." )
237 #define ENC_P_MASKING_TEXT N_( "Motion masking" )
238 #define ENC_P_MASKING_LONGTEXT N_( "Raise the quantizer for " \
239 "macroblocks with a high temporal complexity (default: 0.0)." )
241 #define ENC_BORDER_MASKING_TEXT N_( "Border masking" )
242 #define ENC_BORDER_MASKING_LONGTEXT N_( "Raise the quantizer " \
243 "for macroblocks at the border of the frame (default: 0.0)." )
245 #define ENC_LUMA_ELIM_TEXT N_( "Luminance elimination" )
246 #define ENC_LUMA_ELIM_LONGTEXT N_( "Eliminates luminance blocks when " \
247 "the PSNR isn't much changed (default: 0.0). The H264 specification " \
250 #define ENC_CHROMA_ELIM_TEXT N_( "Chrominance elimination" )
251 #define ENC_CHROMA_ELIM_LONGTEXT N_( "Eliminates chrominance blocks when " \
252 "the PSNR isn't much changed (default: 0.0). The H264 specification " \
255 #define ENC_PROFILE_TEXT N_( "Specify AAC audio profile to use" )
256 #define ENC_PROFILE_LONGTEXT N_( "Specify the AAC audio profile to use " \
257 "for encoding the audio bitstream. It takes the following options: " \
258 "main, low, ssr (not supported) and ltp (default: main)" )
260 #define FFMPEG_COMMON_MEMBERS \
263 const char *psz_namecodec; \
264 AVCodecContext *p_context; \
268 #ifndef AV_VERSION_INT
269 # define AV_VERSION_INT(a, b, c) ((a)<<16 | (b)<<8 | (c))
272 /* Uncomment it to enable compilation with vaapi/dxva2 (you also must change the build
274 //#define HAVE_AVCODEC_VAAPI 1
275 //#define HAVE_AVCODEC_DXVA2 1