1 /*****************************************************************************
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2 * video.c: video decoder using the ffmpeg library
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3 *****************************************************************************
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4 * Copyright (C) 1999-2001 VideoLAN
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7 * Authors: Laurent Aimar <fenrir@via.ecp.fr>
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8 * Gildas Bazin <gbazin@videolan.org>
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10 * This program is free software; you can redistribute it and/or modify
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11 * it under the terms of the GNU General Public License as published by
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12 * the Free Software Foundation; either version 2 of the License, or
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13 * (at your option) any later version.
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15 * This program is distributed in the hope that it will be useful,
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16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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18 * GNU General Public License for more details.
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20 * You should have received a copy of the GNU General Public License
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21 * along with this program; if not, write to the Free Software
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22 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
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23 *****************************************************************************/
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25 /*****************************************************************************
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27 *****************************************************************************/
\r
28 #include <vlc/vlc.h>
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29 #include <vlc/decoder.h>
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32 #ifdef HAVE_FFMPEG_AVCODEC_H
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33 # include <ffmpeg/avcodec.h>
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35 # include <avcodec.h>
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40 /*****************************************************************************
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41 * decoder_sys_t : decoder descriptor
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42 *****************************************************************************/
\r
43 struct decoder_sys_t
\r
45 /* Common part between video and audio decoder */
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48 char *psz_namecodec;
\r
50 AVCodecContext *p_context;
\r
53 /* Video decoder specific part */
\r
59 BITMAPINFOHEADER *p_format;
\r
61 /* for frame skipping algo */
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65 /* how many decoded frames are late */
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67 mtime_t i_late_frames_start;
\r
69 /* for direct rendering */
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70 int b_direct_rendering;
\r
72 vlc_bool_t b_has_b_frames;
\r
74 /* Hack to force display of still pictures */
\r
75 vlc_bool_t b_first_frame;
\r
77 int i_buffer_orig, i_buffer;
\r
78 char *p_buffer_orig, *p_buffer;
\r
80 /* Postprocessing handle */
\r
83 vlc_bool_t b_pp_async;
\r
84 vlc_bool_t b_pp_init;
\r
87 /* FIXME (dummy palette for now) */
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88 static AVPaletteControl palette_control;
\r
90 /*****************************************************************************
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92 *****************************************************************************/
\r
93 static void ffmpeg_CopyPicture ( decoder_t *, picture_t *, AVFrame * );
\r
94 static int ffmpeg_GetFrameBuf ( struct AVCodecContext *, AVFrame * );
\r
95 static void ffmpeg_ReleaseFrameBuf( struct AVCodecContext *, AVFrame * );
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97 static uint32_t ffmpeg_CodecTag( vlc_fourcc_t fcc )
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99 uint8_t *p = (uint8_t*)&fcc;
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100 return p[0] | (p[1] << 8) | (p[2] << 16) | (p[3] << 24);
\r
103 /*****************************************************************************
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105 *****************************************************************************/
\r
106 static uint32_t ffmpeg_PixFmtToChroma( int i_ff_chroma )
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108 switch( i_ff_chroma )
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110 case PIX_FMT_YUV420P:
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111 return VLC_FOURCC('I','4','2','0');
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112 case PIX_FMT_YUV422P:
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113 return VLC_FOURCC('I','4','2','2');
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114 case PIX_FMT_YUV444P:
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115 return VLC_FOURCC('I','4','4','4');
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117 case PIX_FMT_YUV422:
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118 return VLC_FOURCC('Y','U','Y','2');
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120 case PIX_FMT_RGB555:
\r
121 return VLC_FOURCC('R','V','1','5');
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122 case PIX_FMT_RGB565:
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123 return VLC_FOURCC('R','V','1','6');
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124 case PIX_FMT_RGB24:
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125 return VLC_FOURCC('R','V','2','4');
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126 case PIX_FMT_RGBA32:
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127 return VLC_FOURCC('R','V','3','2');
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128 case PIX_FMT_GRAY8:
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129 return VLC_FOURCC('G','R','E','Y');
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131 case PIX_FMT_YUV410P:
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132 case PIX_FMT_YUV411P:
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133 case PIX_FMT_BGR24:
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139 /* Returns a new picture buffer */
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140 static inline picture_t *ffmpeg_NewPictBuf( decoder_t *p_dec,
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141 AVCodecContext *p_context )
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143 decoder_sys_t *p_sys = p_dec->p_sys;
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146 p_dec->fmt_out.video.i_width = p_context->width;
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147 p_dec->fmt_out.video.i_height = p_context->height;
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148 p_dec->fmt_out.i_codec = ffmpeg_PixFmtToChroma( p_context->pix_fmt );
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150 if( !p_context->width || !p_context->height )
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152 return NULL; /* invalid display size */
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155 if( !p_dec->fmt_out.i_codec )
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157 /* we make conversion if possible*/
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158 p_dec->fmt_out.i_codec = VLC_FOURCC('I','4','2','0');
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161 /* If an aspect-ratio was specified in the input format then force it */
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162 if( p_dec->fmt_in.video.i_aspect )
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164 p_dec->fmt_out.video.i_aspect = p_dec->fmt_in.video.i_aspect;
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168 #if LIBAVCODEC_BUILD >= 4687
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169 p_dec->fmt_out.video.i_aspect =
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170 VOUT_ASPECT_FACTOR * ( av_q2d(p_context->sample_aspect_ratio) *
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171 p_context->width / p_context->height );
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173 p_dec->fmt_out.video.i_aspect =
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174 VOUT_ASPECT_FACTOR * p_context->aspect_ratio;
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176 if( p_dec->fmt_out.video.i_aspect == 0 )
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178 p_dec->fmt_out.video.i_aspect =
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179 VOUT_ASPECT_FACTOR * p_context->width / p_context->height;
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183 if( p_context->frame_rate > 0 && p_context->frame_rate_base > 0 )
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185 p_dec->fmt_out.video.i_frame_rate = p_context->frame_rate;
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186 p_dec->fmt_out.video.i_frame_rate_base = p_context->frame_rate_base;
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189 p_pic = p_dec->pf_vout_buffer_new( p_dec );
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191 #ifdef LIBAVCODEC_PP
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192 if( p_sys->p_pp && p_sys->b_pp && !p_sys->b_pp_init )
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194 E_(InitPostproc)( p_dec, p_sys->p_pp, p_context->width,
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195 p_context->height, p_context->pix_fmt );
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196 p_sys->b_pp_init = VLC_TRUE;
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203 /*****************************************************************************
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204 * InitVideo: initialize the video decoder
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205 *****************************************************************************
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206 * the ffmpeg codec will be opened, some memory allocated. The vout is not yet
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207 * opened (done after the first decoded frame).
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208 *****************************************************************************/
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209 int E_(InitVideoDec)( decoder_t *p_dec, AVCodecContext *p_context,
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210 AVCodec *p_codec, int i_codec_id, char *psz_namecodec )
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212 decoder_sys_t *p_sys;
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213 vlc_value_t lockval;
\r
216 var_Get( p_dec->p_libvlc, "avcodec", &lockval );
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218 /* Allocate the memory needed to store the decoder's structure */
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219 if( ( p_dec->p_sys = p_sys =
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220 (decoder_sys_t *)malloc(sizeof(decoder_sys_t)) ) == NULL )
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222 msg_Err( p_dec, "out of memory" );
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223 return VLC_EGENERIC;
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226 p_dec->p_sys->p_context = p_context;
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227 p_dec->p_sys->p_codec = p_codec;
\r
228 p_dec->p_sys->i_codec_id = i_codec_id;
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229 p_dec->p_sys->psz_namecodec = psz_namecodec;
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230 p_sys->p_ff_pic = avcodec_alloc_frame();
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232 /* ***** Fill p_context with init values ***** */
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233 /* FIXME: remove when ffmpeg deals properly with avc1 */
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234 if( p_dec->fmt_in.i_codec != VLC_FOURCC('a','v','c','1') )
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236 p_sys->p_context->codec_tag = ffmpeg_CodecTag( p_dec->fmt_in.i_codec );
\r
237 p_sys->p_context->width = p_dec->fmt_in.video.i_width;
\r
238 p_sys->p_context->height = p_dec->fmt_in.video.i_height;
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239 p_sys->p_context->bits_per_sample = p_dec->fmt_in.video.i_bits_per_pixel;
\r
241 /* ***** Get configuration of ffmpeg plugin ***** */
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242 p_sys->p_context->workaround_bugs =
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243 config_GetInt( p_dec, "ffmpeg-workaround-bugs" );
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244 p_sys->p_context->error_resilience =
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245 config_GetInt( p_dec, "ffmpeg-error-resilience" );
\r
247 var_Create( p_dec, "grayscale", VLC_VAR_BOOL | VLC_VAR_DOINHERIT );
\r
248 var_Get( p_dec, "grayscale", &val );
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249 if( val.b_bool ) p_sys->p_context->flags |= CODEC_FLAG_GRAY;
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251 var_Create( p_dec, "ffmpeg-vismv", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
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252 var_Get( p_dec, "ffmpeg-vismv", &val );
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253 #if LIBAVCODEC_BUILD >= 4698
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254 if( val.i_int ) p_sys->p_context->debug_mv = val.i_int;
\r
257 var_Create( p_dec, "ffmpeg-lowres", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
\r
258 var_Get( p_dec, "ffmpeg-lowres", &val );
\r
259 #if LIBAVCODEC_BUILD >= 4723
\r
260 if( val.i_int > 0 && val.i_int <= 2 ) p_sys->p_context->lowres = val.i_int;
\r
263 /* ***** ffmpeg frame skipping ***** */
\r
264 var_Create( p_dec, "ffmpeg-hurry-up", VLC_VAR_BOOL | VLC_VAR_DOINHERIT );
\r
265 var_Get( p_dec, "ffmpeg-hurry-up", &val );
\r
266 p_sys->b_hurry_up = val.b_bool;
\r
268 /* ***** ffmpeg direct rendering ***** */
\r
269 p_sys->b_direct_rendering = 0;
\r
270 var_Create( p_dec, "ffmpeg-dr", VLC_VAR_BOOL | VLC_VAR_DOINHERIT );
\r
271 var_Get( p_dec, "ffmpeg-dr", &val );
\r
272 if( val.b_bool && (p_sys->p_codec->capabilities & CODEC_CAP_DR1) &&
\r
273 ffmpeg_PixFmtToChroma( p_sys->p_context->pix_fmt ) &&
\r
274 /* Apparently direct rendering doesn't work with YUV422P */
\r
275 p_sys->p_context->pix_fmt != PIX_FMT_YUV422P &&
\r
276 /* H264 uses too many reference frames */
\r
277 p_sys->i_codec_id != CODEC_ID_H264 &&
\r
278 !(p_sys->p_context->width % 16) && !(p_sys->p_context->height % 16) &&
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279 #if LIBAVCODEC_BUILD >= 4698
\r
280 !p_sys->p_context->debug_mv )
\r
285 /* Some codecs set pix_fmt only after the 1st frame has been decoded,
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286 * so we need to do another check in ffmpeg_GetFrameBuf() */
\r
287 p_sys->b_direct_rendering = 1;
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290 #ifdef LIBAVCODEC_PP
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291 p_sys->p_pp = NULL;
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292 p_sys->b_pp = p_sys->b_pp_async = p_sys->b_pp_init = VLC_FALSE;
\r
293 p_sys->p_pp = E_(OpenPostproc)( p_dec, &p_sys->b_pp_async );
\r
296 /* ffmpeg doesn't properly release old pictures when frames are skipped */
\r
297 //if( p_sys->b_hurry_up ) p_sys->b_direct_rendering = 0;
\r
298 if( p_sys->b_direct_rendering )
\r
300 msg_Dbg( p_dec, "using direct rendering" );
\r
301 p_sys->p_context->flags |= CODEC_FLAG_EMU_EDGE;
\r
304 /* Always use our get_buffer wrapper so we can calculate the
\r
306 p_sys->p_context->get_buffer = ffmpeg_GetFrameBuf;
\r
307 p_sys->p_context->release_buffer = ffmpeg_ReleaseFrameBuf;
\r
308 p_sys->p_context->opaque = p_dec;
\r
310 /* ***** init this codec with special data ***** */
\r
311 if( p_dec->fmt_in.i_extra )
\r
313 int i_size = p_dec->fmt_in.i_extra;
\r
315 if( p_sys->i_codec_id == CODEC_ID_SVQ3 )
\r
319 p_sys->p_context->extradata_size = i_size + 12;
\r
320 p = p_sys->p_context->extradata =
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321 malloc( p_sys->p_context->extradata_size );
\r
323 memcpy( &p[0], "SVQ3", 4 );
\r
324 memset( &p[4], 0, 8 );
\r
325 memcpy( &p[12], p_dec->fmt_in.p_extra, i_size );
\r
327 /* Now remove all atoms before the SMI one */
\r
328 if( p_sys->p_context->extradata_size > 0x5a &&
\r
329 strncmp( &p[0x56], "SMI ", 4 ) )
\r
331 uint8_t *psz = &p[0x52];
\r
333 while( psz < &p[p_sys->p_context->extradata_size - 8] )
\r
335 int i_size = GetDWBE( psz );
\r
338 /* FIXME handle 1 as long size */
\r
341 if( !strncmp( &psz[4], "SMI ", 4 ) )
\r
343 memmove( &p[0x52], psz,
\r
344 &p[p_sys->p_context->extradata_size] - psz );
\r
352 else if( p_dec->fmt_in.i_codec == VLC_FOURCC( 'R', 'V', '1', '0' ) ||
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353 p_dec->fmt_in.i_codec == VLC_FOURCC( 'R', 'V', '1', '3' ) ||
\r
354 p_dec->fmt_in.i_codec == VLC_FOURCC( 'R', 'V', '2', '0' ) )
\r
356 if( p_dec->fmt_in.i_extra == 8 )
\r
358 p_sys->p_context->extradata_size = 8;
\r
359 p_sys->p_context->extradata = malloc( 8 );
\r
361 memcpy( p_sys->p_context->extradata,
\r
362 p_dec->fmt_in.p_extra,
\r
363 p_dec->fmt_in.i_extra );
\r
364 p_sys->p_context->sub_id= ((uint32_t*)p_dec->fmt_in.p_extra)[1];
\r
366 msg_Warn( p_dec, "using extra data for RV codec sub_id=%08x",
\r
367 p_sys->p_context->sub_id );
\r
370 /* FIXME: remove when ffmpeg deals properly with avc1 */
\r
371 else if( p_dec->fmt_in.i_codec == VLC_FOURCC('a','v','c','1') )
\r
378 p_sys->p_context->extradata_size = i_size;
\r
379 p_sys->p_context->extradata =
\r
380 malloc( i_size + FF_INPUT_BUFFER_PADDING_SIZE );
\r
381 memcpy( p_sys->p_context->extradata,
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382 p_dec->fmt_in.p_extra, i_size );
\r
383 memset( &((uint8_t*)p_sys->p_context->extradata)[i_size],
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384 0, FF_INPUT_BUFFER_PADDING_SIZE );
\r
388 /* ***** misc init ***** */
\r
389 p_sys->input_pts = p_sys->input_dts = 0;
\r
391 p_sys->b_has_b_frames = VLC_FALSE;
\r
392 p_sys->b_first_frame = VLC_TRUE;
\r
393 p_sys->i_late_frames = 0;
\r
394 p_sys->i_buffer = 0;
\r
395 p_sys->i_buffer_orig = 1;
\r
396 p_sys->p_buffer_orig = p_sys->p_buffer = malloc( p_sys->i_buffer_orig );
\r
398 /* Set output properties */
\r
399 p_dec->fmt_out.i_cat = VIDEO_ES;
\r
400 p_dec->fmt_out.i_codec = ffmpeg_PixFmtToChroma( p_context->pix_fmt );
\r
402 /* Setup palette */
\r
403 #if LIBAVCODEC_BUILD >= 4688
\r
404 if( p_dec->fmt_in.video.p_palette )
\r
405 p_sys->p_context->palctrl =
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406 (AVPaletteControl *)p_dec->fmt_in.video.p_palette;
\r
408 p_sys->p_context->palctrl = &palette_control;
\r
411 /* ***** Open the codec ***** */
\r
412 vlc_mutex_lock( lockval.p_address );
\r
413 if( avcodec_open( p_sys->p_context, p_sys->p_codec ) < 0 )
\r
415 vlc_mutex_unlock( lockval.p_address );
\r
416 msg_Err( p_dec, "cannot open codec (%s)", p_sys->psz_namecodec );
\r
418 return VLC_EGENERIC;
\r
420 vlc_mutex_unlock( lockval.p_address );
\r
421 msg_Dbg( p_dec, "ffmpeg codec (%s) started", p_sys->psz_namecodec );
\r
424 return VLC_SUCCESS;
\r
427 /*****************************************************************************
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428 * DecodeVideo: Called to decode one or more frames
\r
429 *****************************************************************************/
\r
430 picture_t *E_(DecodeVideo)( decoder_t *p_dec, block_t **pp_block )
\r
432 decoder_sys_t *p_sys = p_dec->p_sys;
\r
434 int b_null_size = VLC_FALSE;
\r
437 if( !pp_block || !*pp_block ) return NULL;
\r
439 p_block = *pp_block;
\r
441 if( p_block->i_flags & (BLOCK_FLAG_DISCONTINUITY|BLOCK_FLAG_CORRUPTED) )
\r
443 p_sys->i_buffer = 0;
\r
444 p_sys->i_pts = 0; /* To make sure we recover properly */
\r
446 p_sys->input_pts = p_sys->input_dts = 0;
\r
447 p_sys->i_late_frames = 0;
\r
449 block_Release( p_block );
\r
453 if( p_block->i_flags & BLOCK_FLAG_PREROLL )
\r
455 /* Do not care about late frames when prerolling
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456 * TODO avoid decoding of non reference frame
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457 * (ie all B except for H264 where it depends only on nal_ref_idc) */
\r
458 p_sys->i_late_frames = 0;
\r
461 if( !p_dec->b_pace_control && p_sys->i_late_frames > 0 &&
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462 mdate() - p_sys->i_late_frames_start > I64C(5000000) )
\r
466 msg_Err( p_dec, "more than 5 seconds of late video -> "
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467 "dropping frame (computer too slow ?)" );
\r
468 p_sys->i_pts = 0; /* To make sure we recover properly */
\r
470 block_Release( p_block );
\r
471 p_sys->i_late_frames--;
\r
475 if( p_block->i_pts > 0 || p_block->i_dts > 0 )
\r
477 p_sys->input_pts = p_block->i_pts;
\r
478 p_sys->input_dts = p_block->i_dts;
\r
480 /* Make sure we don't reuse the same timestamps twice */
\r
481 p_block->i_pts = p_block->i_dts = 0;
\r
484 /* TODO implement it in a better way */
\r
485 /* A good idea could be to decode all I pictures and see for the other */
\r
486 if( !p_dec->b_pace_control &&
\r
487 p_sys->b_hurry_up && p_sys->i_late_frames > 4 )
\r
490 if( p_sys->i_late_frames < 8 )
\r
492 p_sys->p_context->hurry_up = 2;
\r
496 /* picture too late, won't decode
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497 * but break picture until a new I, and for mpeg4 ...*/
\r
499 p_sys->i_late_frames--; /* needed else it will never be decrease */
\r
500 block_Release( p_block );
\r
501 p_sys->i_buffer = 0;
\r
507 if (!(p_block->i_flags & BLOCK_FLAG_PREROLL))
\r
510 p_sys->p_context->hurry_up = 0;
\r
515 p_sys->p_context->hurry_up = 1;
\r
520 if( p_sys->p_context->width <= 0 || p_sys->p_context->height <= 0 )
\r
522 p_sys->p_context->hurry_up = 5;
\r
523 b_null_size = VLC_TRUE;
\r
527 * Do the actual decoding now
\r
530 /* Check if post-processing was enabled */
\r
531 p_sys->b_pp = p_sys->b_pp_async;
\r
533 /* Don't forget that ffmpeg requires a little more bytes
\r
534 * that the real frame size */
\r
535 if( p_block->i_buffer > 0 )
\r
537 p_sys->i_buffer = p_block->i_buffer;
\r
538 if( p_sys->i_buffer + FF_INPUT_BUFFER_PADDING_SIZE >
\r
539 p_sys->i_buffer_orig )
\r
541 free( p_sys->p_buffer_orig );
\r
542 p_sys->i_buffer_orig =
\r
543 p_block->i_buffer + FF_INPUT_BUFFER_PADDING_SIZE;
\r
544 p_sys->p_buffer_orig = malloc( p_sys->i_buffer_orig );
\r
546 p_sys->p_buffer = p_sys->p_buffer_orig;
\r
547 p_sys->i_buffer = p_block->i_buffer;
\r
548 p_dec->p_vlc->pf_memcpy( p_sys->p_buffer, p_block->p_buffer,
\r
549 p_block->i_buffer );
\r
550 memset( p_sys->p_buffer + p_block->i_buffer, 0,
\r
551 FF_INPUT_BUFFER_PADDING_SIZE );
\r
553 p_block->i_buffer = 0;
\r
556 while( p_sys->i_buffer > 0 )
\r
558 int i_used, b_gotpicture;
\r
561 i_used = avcodec_decode_video( p_sys->p_context, p_sys->p_ff_pic,
\r
563 p_sys->p_buffer, p_sys->i_buffer );
\r
564 if( b_null_size && p_sys->p_context->width > 0 &&
\r
565 p_sys->p_context->height > 0 )
\r
567 /* Reparse it to not drop the I frame */
\r
568 b_null_size = VLC_FALSE;
\r
569 p_sys->p_context->hurry_up = 0;
\r
570 i_used = avcodec_decode_video( p_sys->p_context, p_sys->p_ff_pic,
\r
572 p_sys->p_buffer, p_sys->i_buffer );
\r
577 msg_Warn( p_dec, "cannot decode one frame (%d bytes)",
\r
579 block_Release( p_block );
\r
582 else if( i_used > p_sys->i_buffer )
\r
584 i_used = p_sys->i_buffer;
\r
587 /* Consumed bytes */
\r
588 p_sys->i_buffer -= i_used;
\r
589 p_sys->p_buffer += i_used;
\r
591 /* Nothing to display */
\r
592 if( !b_gotpicture )
\r
594 if( i_used == 0 ) break;
\r
598 /* Update frame late count (except when doing preroll) */
\r
599 if( p_sys->i_pts && p_sys->i_pts <= mdate() &&
\r
600 !(p_block->i_flags & BLOCK_FLAG_PREROLL) )
\r
602 p_sys->i_late_frames++;
\r
603 if( p_sys->i_late_frames == 1 )
\r
604 p_sys->i_late_frames_start = mdate();
\r
608 p_sys->i_late_frames = 0;
\r
611 if( !b_drawpicture || !p_sys->p_ff_pic->linesize[0] )
\r
613 /* Do not display the picture */
\r
617 if( !p_sys->p_ff_pic->opaque )
\r
619 /* Get a new picture */
\r
620 p_pic = ffmpeg_NewPictBuf( p_dec, p_sys->p_context );
\r
623 block_Release( p_block );
\r
627 /* Fill p_picture_t from AVVideoFrame and do chroma conversion
\r
629 ffmpeg_CopyPicture( p_dec, p_pic, p_sys->p_ff_pic );
\r
633 p_pic = (picture_t *)p_sys->p_ff_pic->opaque;
\r
637 if( p_sys->p_ff_pic->pts ) p_sys->i_pts = p_sys->p_ff_pic->pts;
\r
639 /* Sanity check (seems to be needed for some streams ) */
\r
640 if( p_sys->p_ff_pic->pict_type == FF_B_TYPE )
\r
642 p_sys->b_has_b_frames = VLC_TRUE;
\r
645 /* Send decoded frame to vout */
\r
648 p_pic->date = p_sys->i_pts;
\r
650 /* interpolate the next PTS */
\r
651 if( p_sys->p_context->frame_rate > 0 )
\r
653 p_sys->i_pts += I64C(1000000) *
\r
654 (2 + p_sys->p_ff_pic->repeat_pict) *
\r
655 p_sys->p_context->frame_rate_base /
\r
656 (2 * p_sys->p_context->frame_rate);
\r
659 if( p_sys->b_first_frame )
\r
661 /* Hack to force display of still pictures */
\r
662 p_sys->b_first_frame = VLC_FALSE;
\r
663 p_pic->b_force = VLC_TRUE;
\r
666 p_pic->i_nb_fields = 2 + p_sys->p_ff_pic->repeat_pict;
\r
667 #if LIBAVCODEC_BUILD >= 4685
\r
668 p_pic->b_progressive = !p_sys->p_ff_pic->interlaced_frame;
\r
669 p_pic->b_top_field_first = p_sys->p_ff_pic->top_field_first;
\r
676 p_dec->pf_vout_buffer_del( p_dec, p_pic );
\r
680 block_Release( p_block );
\r
684 /*****************************************************************************
\r
685 * EndVideo: decoder destruction
\r
686 *****************************************************************************
\r
687 * This function is called when the thread ends after a sucessful
\r
689 *****************************************************************************/
\r
690 void E_(EndVideoDec)( decoder_t *p_dec )
\r
692 decoder_sys_t *p_sys = p_dec->p_sys;
\r
694 if( p_sys->p_ff_pic ) av_free( p_sys->p_ff_pic );
\r
696 #ifdef LIBAVCODEC_PP
\r
697 E_(ClosePostproc)( p_dec, p_sys->p_pp );
\r
700 free( p_sys->p_buffer_orig );
\r
703 /*****************************************************************************
\r
704 * ffmpeg_CopyPicture: copy a picture from ffmpeg internal buffers to a
\r
705 * picture_t structure (when not in direct rendering mode).
\r
706 *****************************************************************************/
\r
707 static void ffmpeg_CopyPicture( decoder_t *p_dec,
\r
708 picture_t *p_pic, AVFrame *p_ff_pic )
\r
710 decoder_sys_t *p_sys = p_dec->p_sys;
\r
712 if( ffmpeg_PixFmtToChroma( p_sys->p_context->pix_fmt ) )
\r
714 int i_plane, i_size, i_line;
\r
715 uint8_t *p_dst, *p_src;
\r
716 int i_src_stride, i_dst_stride;
\r
718 #ifdef LIBAVCODEC_PP
\r
719 if( p_sys->p_pp && p_sys->b_pp )
\r
720 E_(PostprocPict)( p_dec, p_sys->p_pp, p_pic, p_ff_pic );
\r
723 for( i_plane = 0; i_plane < p_pic->i_planes; i_plane++ )
\r
725 p_src = p_ff_pic->data[i_plane];
\r
726 p_dst = p_pic->p[i_plane].p_pixels;
\r
727 i_src_stride = p_ff_pic->linesize[i_plane];
\r
728 i_dst_stride = p_pic->p[i_plane].i_pitch;
\r
730 i_size = __MIN( i_src_stride, i_dst_stride );
\r
731 for( i_line = 0; i_line < p_pic->p[i_plane].i_visible_lines;
\r
734 p_dec->p_vlc->pf_memcpy( p_dst, p_src, i_size );
\r
735 p_src += i_src_stride;
\r
736 p_dst += i_dst_stride;
\r
742 AVPicture dest_pic;
\r
745 /* we need to convert to I420 */
\r
746 switch( p_sys->p_context->pix_fmt )
\r
748 case PIX_FMT_YUV410P:
\r
749 case PIX_FMT_YUV411P:
\r
751 for( i = 0; i < p_pic->i_planes; i++ )
\r
753 dest_pic.data[i] = p_pic->p[i].p_pixels;
\r
754 dest_pic.linesize[i] = p_pic->p[i].i_pitch;
\r
756 img_convert( &dest_pic, PIX_FMT_YUV420P,
\r
757 (AVPicture *)p_ff_pic,
\r
758 p_sys->p_context->pix_fmt,
\r
759 p_sys->p_context->width,
\r
760 p_sys->p_context->height );
\r
763 msg_Err( p_dec, "don't know how to convert chroma %i",
\r
764 p_sys->p_context->pix_fmt );
\r
765 p_dec->b_error = 1;
\r
771 /*****************************************************************************
\r
772 * ffmpeg_GetFrameBuf: callback used by ffmpeg to get a frame buffer.
\r
773 *****************************************************************************
\r
774 * It is used for direct rendering as well as to get the right PTS for each
\r
775 * decoded picture (even in indirect rendering mode).
\r
776 *****************************************************************************/
\r
777 static int ffmpeg_GetFrameBuf( struct AVCodecContext *p_context,
\r
778 AVFrame *p_ff_pic )
\r
780 decoder_t *p_dec = (decoder_t *)p_context->opaque;
\r
781 decoder_sys_t *p_sys = p_dec->p_sys;
\r
784 /* Set picture PTS */
\r
785 if( p_sys->input_pts )
\r
787 p_ff_pic->pts = p_sys->input_pts;
\r
789 else if( p_sys->input_dts )
\r
791 /* Some demuxers only set the dts so let's try to find a useful
\r
792 * timestamp from this */
\r
793 if( !p_context->has_b_frames || !p_sys->b_has_b_frames ||
\r
794 !p_ff_pic->reference || !p_sys->i_pts )
\r
796 p_ff_pic->pts = p_sys->input_dts;
\r
798 else p_ff_pic->pts = 0;
\r
800 else p_ff_pic->pts = 0;
\r
802 if( p_sys->i_pts ) /* make sure 1st frame has a pts > 0 */
\r
804 p_sys->input_pts = p_sys->input_dts = 0;
\r
807 p_ff_pic->opaque = 0;
\r
809 /* Not much to do in indirect rendering mode */
\r
810 if( !p_sys->b_direct_rendering || p_sys->b_pp )
\r
812 return avcodec_default_get_buffer( p_context, p_ff_pic );
\r
815 /* Some codecs set pix_fmt only after the 1st frame has been decoded,
\r
816 * so this check is necessary. */
\r
817 if( !ffmpeg_PixFmtToChroma( p_context->pix_fmt ) ||
\r
818 p_sys->p_context->width % 16 || p_sys->p_context->height % 16 )
\r
820 msg_Dbg( p_dec, "disabling direct rendering" );
\r
821 p_sys->b_direct_rendering = 0;
\r
822 return avcodec_default_get_buffer( p_context, p_ff_pic );
\r
825 /* Get a new picture */
\r
826 //p_sys->p_vout->render.b_allow_modify_pics = 0;
\r
827 p_pic = ffmpeg_NewPictBuf( p_dec, p_sys->p_context );
\r
830 p_sys->b_direct_rendering = 0;
\r
831 return avcodec_default_get_buffer( p_context, p_ff_pic );
\r
833 p_sys->p_context->draw_horiz_band = NULL;
\r
835 p_ff_pic->opaque = (void*)p_pic;
\r
836 p_ff_pic->type = FF_BUFFER_TYPE_USER;
\r
837 p_ff_pic->data[0] = p_pic->p[0].p_pixels;
\r
838 p_ff_pic->data[1] = p_pic->p[1].p_pixels;
\r
839 p_ff_pic->data[2] = p_pic->p[2].p_pixels;
\r
840 p_ff_pic->data[3] = NULL; /* alpha channel but I'm not sure */
\r
842 p_ff_pic->linesize[0] = p_pic->p[0].i_pitch;
\r
843 p_ff_pic->linesize[1] = p_pic->p[1].i_pitch;
\r
844 p_ff_pic->linesize[2] = p_pic->p[2].i_pitch;
\r
845 p_ff_pic->linesize[3] = 0;
\r
847 if( p_ff_pic->reference != 0 )
\r
849 p_dec->pf_picture_link( p_dec, p_pic );
\r
852 /* FIXME what is that, should give good value */
\r
853 p_ff_pic->age = 256*256*256*64; // FIXME FIXME from ffmpeg
\r
858 static void ffmpeg_ReleaseFrameBuf( struct AVCodecContext *p_context,
\r
859 AVFrame *p_ff_pic )
\r
861 decoder_t *p_dec = (decoder_t *)p_context->opaque;
\r
864 if( !p_ff_pic->opaque )
\r
866 avcodec_default_release_buffer( p_context, p_ff_pic );
\r
870 p_pic = (picture_t*)p_ff_pic->opaque;
\r
872 p_ff_pic->data[0] = NULL;
\r
873 p_ff_pic->data[1] = NULL;
\r
874 p_ff_pic->data[2] = NULL;
\r
875 p_ff_pic->data[3] = NULL;
\r
877 if( p_ff_pic->reference != 0 )
\r
879 p_dec->pf_picture_unlink( p_dec, p_pic );
\r