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 *****************************************************************************/
25 /* VLC <-> avcodec tables */
26 int GetFfmpegCodec( vlc_fourcc_t i_fourcc, int *pi_cat,
27 int *pi_ffmpeg_codec, const char **ppsz_name );
28 int GetVlcFourcc( int i_ffmpeg_codec, int *pi_cat,
29 vlc_fourcc_t *pi_fourcc, const char **ppsz_name );
30 void GetVlcAudioFormat( vlc_fourcc_t *, unsigned *pi_bits, int i_sample_fmt );
32 picture_t * DecodeVideo ( decoder_t *, block_t ** );
33 aout_buffer_t * DecodeAudio( decoder_t *, block_t ** );
34 subpicture_t *DecodeSubtitle( decoder_t *p_dec, block_t ** );
36 /* Video encoder module */
37 int OpenEncoder ( vlc_object_t * );
38 void CloseEncoder( vlc_object_t * );
40 /* Audio encoder module */
41 int OpenAudioEncoder ( vlc_object_t * );
42 void CloseAudioEncoder( vlc_object_t * );
44 /* Deinterlace video filter module */
45 int OpenDeinterlace( vlc_object_t * );
46 void CloseDeinterlace( vlc_object_t * );
48 void InitLibavcodec( vlc_object_t *p_object );
51 int InitVideoDec( decoder_t *p_dec, AVCodecContext *p_context,
52 AVCodec *p_codec, int i_codec_id, const char *psz_namecodec );
53 void EndVideoDec( decoder_t *p_dec );
56 int InitAudioDec( decoder_t *p_dec, AVCodecContext *p_context,
57 AVCodec *p_codec, int i_codec_id, const char *psz_namecodec );
58 void EndAudioDec( decoder_t *p_dec );
60 /* Subtitle Decoder */
61 int InitSubtitleDec( decoder_t *p_dec, AVCodecContext *p_context,
62 AVCodec *p_codec, int i_codec_id, const char *psz_namecodec );
63 void EndSubtitleDec( decoder_t *p_dec );
66 /*****************************************************************************
67 * Module descriptor help strings
68 *****************************************************************************/
69 #define DR_TEXT N_("Direct rendering")
70 /* FIXME Does somebody who knows what it does, explain */
71 #define DR_LONGTEXT N_("Direct rendering")
73 #define ERROR_TEXT N_("Error resilience")
74 #define ERROR_LONGTEXT N_( \
75 "FFmpeg can do error resilience.\n" \
76 "However, with a buggy encoder (such as the ISO MPEG-4 encoder from M$) " \
77 "this can produce a lot of errors.\n" \
78 "Valid values range from 0 to 4 (0 disables all errors resilience).")
80 #define BUGS_TEXT N_("Workaround bugs")
81 #define BUGS_LONGTEXT N_( \
82 "Try to fix some bugs:\n" \
85 "4 xvid interlaced\n" \
90 "This must be the sum of the values. For example, to fix \"ac vlc\" and " \
91 "\"ump4\", enter 40.")
93 #define HURRYUP_TEXT N_("Hurry up")
94 #define HURRYUP_LONGTEXT N_( \
95 "The decoder can partially decode or skip frame(s) " \
96 "when there is not enough time. It's useful with low CPU power " \
97 "but it can produce distorted pictures.")
99 #define FAST_TEXT N_("Allow speed tricks")
100 #define FAST_LONGTEXT N_( \
101 "Allow non specification compliant speedup tricks. Faster but error-prone.")
103 #define SKIP_FRAME_TEXT N_("Skip frame (default=0)")
104 #define SKIP_FRAME_LONGTEXT N_( \
105 "Force skipping of frames to speed up decoding " \
106 "(-1=None, 0=Default, 1=B-frames, 2=P-frames, 3=B+P frames, 4=all frames)." )
108 #define SKIP_IDCT_TEXT N_("Skip idct (default=0)")
109 #define SKIP_IDCT_LONGTEXT N_( \
110 "Force skipping of idct to speed up decoding for frame types" \
111 "(-1=None, 0=Default, 1=B-frames, 2=P-frames, 3=B+P frames, 4=all frames)." )
113 #define DEBUG_TEXT N_( "Debug mask" )
114 #define DEBUG_LONGTEXT N_( "Set FFmpeg debug mask" )
116 /* TODO: Use a predefined list, with 0,1,2,4,7 */
117 #define VISMV_TEXT N_( "Visualize motion vectors" )
118 #define VISMV_LONGTEXT N_( \
119 "You can overlay the motion vectors (arrows showing how the images move) "\
120 "on the image. This value is a mask, based on these values:\n"\
121 "1 - visualize forward predicted MVs of P frames\n" \
122 "2 - visualize forward predicted MVs of B frames\n" \
123 "4 - visualize backward predicted MVs of B frames\n" \
124 "To visualize all vectors, the value should be 7." )
126 #define LOWRES_TEXT N_( "Low resolution decoding" )
127 #define LOWRES_LONGTEXT N_( "Only decode a low resolution version of " \
128 "the video. This requires less processing power" )
130 #define SKIPLOOPF_TEXT N_( "Skip the loop filter for H.264 decoding" )
131 #define SKIPLOOPF_LONGTEXT N_( "Skipping the loop filter (aka deblocking) " \
132 "usually has a detrimental effect on quality. However it provides a big " \
133 "speedup for high definition streams." )
135 #define HW_TEXT N_("Hardware decoding")
136 #define HW_LONGTEXT N_("This allows hardware decoding when available.")
138 #define THREADS_TEXT N_( "Threads" )
139 #define THREADS_LONGTEXT N_( "Number of threads used for decoding, 0 meaning auto" )
144 #define ENC_CFG_PREFIX "sout-ffmpeg-"
146 #define ENC_KEYINT_TEXT N_( "Ratio of key frames" )
147 #define ENC_KEYINT_LONGTEXT N_( "Number of frames " \
148 "that will be coded for one key frame." )
150 #define ENC_BFRAMES_TEXT N_( "Ratio of B frames" )
151 #define ENC_BFRAMES_LONGTEXT N_( "Number of " \
152 "B frames that will be coded between two reference frames." )
154 #define ENC_VT_TEXT N_( "Video bitrate tolerance" )
155 #define ENC_VT_LONGTEXT N_( "Video bitrate tolerance in kbit/s." )
157 #define ENC_INTERLACE_TEXT N_( "Interlaced encoding" )
158 #define ENC_INTERLACE_LONGTEXT N_( "Enable dedicated " \
159 "algorithms for interlaced frames." )
161 #define ENC_INTERLACE_ME_TEXT N_( "Interlaced motion estimation" )
162 #define ENC_INTERLACE_ME_LONGTEXT N_( "Enable interlaced " \
163 "motion estimation algorithms. This requires more CPU." )
165 #define ENC_PRE_ME_TEXT N_( "Pre-motion estimation" )
166 #define ENC_PRE_ME_LONGTEXT N_( "Enable the pre-motion " \
167 "estimation algorithm.")
169 #define ENC_RC_BUF_TEXT N_( "Rate control buffer size" )
170 #define ENC_RC_BUF_LONGTEXT N_( "Rate control " \
171 "buffer size (in kbytes). A bigger buffer will allow for better rate " \
172 "control, but will cause a delay in the stream." )
174 #define ENC_RC_BUF_AGGR_TEXT N_( "Rate control buffer aggressiveness" )
175 #define ENC_RC_BUF_AGGR_LONGTEXT N_( "Rate control "\
176 "buffer aggressiveness." )
178 #define ENC_IQUANT_FACTOR_TEXT N_( "I quantization factor" )
179 #define ENC_IQUANT_FACTOR_LONGTEXT N_( \
180 "Quantization factor of I frames, compared with P frames (for instance " \
181 "1.0 => same qscale for I and P frames)." )
183 #define ENC_NOISE_RED_TEXT N_( "Noise reduction" )
184 #define ENC_NOISE_RED_LONGTEXT N_( "Enable a simple noise " \
185 "reduction algorithm to lower the encoding length and bitrate, at the " \
186 "expense of lower quality frames." )
188 #define ENC_MPEG4_MATRIX_TEXT N_( "MPEG4 quantization matrix" )
189 #define ENC_MPEG4_MATRIX_LONGTEXT N_( "Use the MPEG4 " \
190 "quantization matrix for MPEG2 encoding. This generally yields a " \
191 "better looking picture, while still retaining the compatibility with " \
192 "standard MPEG2 decoders.")
194 #define ENC_HQ_TEXT N_( "Quality level" )
195 #define ENC_HQ_LONGTEXT N_( "Quality level " \
196 "for the encoding of motions vectors (this can slow down the encoding " \
199 #define ENC_HURRYUP_TEXT N_( "Hurry up" )
200 #define ENC_HURRYUP_LONGTEXT N_( "The encoder " \
201 "can make on-the-fly quality tradeoffs if your CPU can't keep up with " \
202 "the encoding rate. It will disable trellis quantization, then the rate " \
203 "distortion of motion vectors (hq), and raise the noise reduction " \
204 "threshold to ease the encoder's task." )
206 #define ENC_QMIN_TEXT N_( "Minimum video quantizer scale" )
207 #define ENC_QMIN_LONGTEXT N_( "Minimum video " \
210 #define ENC_QMAX_TEXT N_( "Maximum video quantizer scale" )
211 #define ENC_QMAX_LONGTEXT N_( "Maximum video " \
214 #define ENC_TRELLIS_TEXT N_( "Trellis quantization" )
215 #define ENC_TRELLIS_LONGTEXT N_( "Enable trellis " \
216 "quantization (rate distortion for block coefficients)." )
218 #define ENC_QSCALE_TEXT N_( "Fixed quantizer scale" )
219 #define ENC_QSCALE_LONGTEXT N_( "A fixed video " \
220 "quantizer scale for VBR encoding (accepted values: 0.01 to 255.0)." )
222 #define ENC_STRICT_TEXT N_( "Strict standard compliance" )
223 #define ENC_STRICT_LONGTEXT N_( "Force a strict standard " \
224 "compliance when encoding (accepted values: -1, 0, 1)." )
226 #define ENC_LUMI_MASKING_TEXT N_( "Luminance masking" )
227 #define ENC_LUMI_MASKING_LONGTEXT N_( "Raise the quantizer for " \
228 "very bright macroblocks (default: 0.0)." )
230 #define ENC_DARK_MASKING_TEXT N_( "Darkness masking" )
231 #define ENC_DARK_MASKING_LONGTEXT N_( "Raise the quantizer for " \
232 "very dark macroblocks (default: 0.0)." )
234 #define ENC_P_MASKING_TEXT N_( "Motion masking" )
235 #define ENC_P_MASKING_LONGTEXT N_( "Raise the quantizer for " \
236 "macroblocks with a high temporal complexity (default: 0.0)." )
238 #define ENC_BORDER_MASKING_TEXT N_( "Border masking" )
239 #define ENC_BORDER_MASKING_LONGTEXT N_( "Raise the quantizer " \
240 "for macroblocks at the border of the frame (default: 0.0)." )
242 #define ENC_LUMA_ELIM_TEXT N_( "Luminance elimination" )
243 #define ENC_LUMA_ELIM_LONGTEXT N_( "Eliminates luminance blocks when " \
244 "the PSNR isn't much changed (default: 0.0). The H264 specification " \
247 #define ENC_CHROMA_ELIM_TEXT N_( "Chrominance elimination" )
248 #define ENC_CHROMA_ELIM_LONGTEXT N_( "Eliminates chrominance blocks when " \
249 "the PSNR isn't much changed (default: 0.0). The H264 specification " \
252 #define ENC_PROFILE_TEXT N_( "Specify AAC audio profile to use" )
253 #define ENC_PROFILE_LONGTEXT N_( "Specify the AAC audio profile to use " \
254 "for encoding the audio bitstream. It takes the following options: " \
255 "main, low, ssr (not supported) and ltp (default: main)" )
257 #define FFMPEG_COMMON_MEMBERS \
260 const char *psz_namecodec; \
261 AVCodecContext *p_context; \
265 #ifndef AV_VERSION_INT
266 # define AV_VERSION_INT(a, b, c) ((a)<<16 | (b)<<8 | (c))
269 /* Uncomment it to enable compilation with vaapi/dxva2 (you also must change the build
271 //#define HAVE_AVCODEC_VAAPI 1
272 //#define HAVE_AVCODEC_DXVA2 1