1 /*****************************************************************************
2 * vda.c: VDA helpers for the libavcodec decoder
3 *****************************************************************************
4 * Copyright © 2012 VideoLAN
6 * Authors: Sebastien Zwickert <dilaroga@free.fr>
8 * This program is free software; you can redistribute it and/or modify it
9 * under the terms of the GNU Lesser General Public License as published by
10 * the Free Software Foundation; either version 2.1 of the License, or
11 * (at your option) any later version.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU Lesser General Public License for more details.
18 * You should have received a copy of the GNU Lesser General Public License
19 * along with this program; if not, write to the Free Software Foundation,
20 * Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
21 *****************************************************************************/
27 #include <vlc_common.h>
31 #include <libavcodec/avcodec.h>
37 #include <libavcodec/vda.h>
38 #include <VideoDecodeAcceleration/VDADecoder.h>
42 struct vda_context hw_ctx;
44 const uint8_t *p_extradata;
47 vlc_fourcc_t i_chroma;
49 copy_cache_t image_cache;
55 typedef struct vlc_va_sys_t vlc_va_vda_t;
57 static vlc_va_vda_t *vlc_va_vda_Get( vlc_va_t *p_va )
62 /*****************************************************************************
63 * vda_Copy420YpCbCr8Planar: copy y420 CVPixelBuffer to picture_t
64 *****************************************************************************/
65 static void vda_Copy420YpCbCr8Planar( picture_t *p_pic,
66 CVPixelBufferRef buffer,
74 CVPixelBufferLockBaseAddress( buffer, 0 );
76 for( int i = 0; i < 3; i++ )
78 pp_plane[i] = CVPixelBufferGetBaseAddressOfPlane( buffer, i );
79 pi_pitch[i] = CVPixelBufferGetBytesPerRowOfPlane( buffer, i );
82 CopyFromYv12( p_pic, pp_plane, pi_pitch,
83 i_width, i_height, cache );
85 CVPixelBufferUnlockBaseAddress( buffer, 0 );
88 /*****************************************************************************
89 * vda_Copy422YpCbCr8: copy 2vuy CVPixelBuffer to picture_t
90 *****************************************************************************/
91 static void vda_Copy422YpCbCr8( picture_t *p_pic,
92 CVPixelBufferRef buffer )
94 int i_plane, i_line, i_dst_stride, i_src_stride;
95 uint8_t *p_dst, *p_src;
97 CVPixelBufferLockBaseAddress( buffer, 0 );
99 for( i_plane = 0; i_plane < p_pic->i_planes; i_plane++ )
101 p_dst = p_pic->p[i_plane].p_pixels;
102 p_src = CVPixelBufferGetBaseAddressOfPlane( buffer, i_plane );
103 i_dst_stride = p_pic->p[i_plane].i_pitch;
104 i_src_stride = CVPixelBufferGetBytesPerRowOfPlane( buffer, i_plane );
106 for( i_line = 0; i_line < p_pic->p[i_plane].i_visible_lines ; i_line++ )
108 memcpy( p_dst, p_src, i_src_stride );
110 p_src += i_src_stride;
111 p_dst += i_dst_stride;
115 CVPixelBufferUnlockBaseAddress( buffer, 0 );
118 static int Setup( vlc_va_t *p_external, void **pp_hw_ctx, vlc_fourcc_t *pi_chroma,
119 int i_width, int i_height )
122 vlc_va_vda_t *p_va = vlc_va_vda_Get( p_external );
124 if( p_va->hw_ctx.width == i_width
125 && p_va->hw_ctx.height == i_height
126 && p_va->hw_ctx.decoder )
128 *pp_hw_ctx = &p_va->hw_ctx;
129 *pi_chroma = p_va->i_chroma;
133 if( p_va->hw_ctx.decoder )
135 ff_vda_destroy_decoder( &p_va->hw_ctx );
139 memset( &p_va->hw_ctx, 0, sizeof(p_va->hw_ctx) );
140 p_va->hw_ctx.width = i_width;
141 p_va->hw_ctx.height = i_height;
142 p_va->hw_ctx.format = 'avc1';
143 p_va->hw_ctx.use_sync_decoding = 1;
145 int i_pix_fmt = var_CreateGetInteger( p_va->p_log, "avcodec-vda-pix-fmt" );
150 p_va->hw_ctx.cv_pix_fmt_type = kCVPixelFormatType_422YpCbCr8;
151 p_va->i_chroma = VLC_CODEC_UYVY;
155 p_va->hw_ctx.cv_pix_fmt_type = kCVPixelFormatType_420YpCbCr8Planar;
156 p_va->i_chroma = VLC_CODEC_I420;
157 CopyInitCache( &p_va->image_cache, i_width );
161 /* Setup the libavcodec hardware context */
162 *pp_hw_ctx = &p_va->hw_ctx;
163 *pi_chroma = p_va->i_chroma;
165 /* create the decoder */
166 int status = ff_vda_create_decoder( &p_va->hw_ctx,
171 msg_Err( p_va->p_log, "Failed to create the decoder : %i", status );
178 static int Get( vlc_va_t *p_external, AVFrame *p_ff )
180 VLC_UNUSED( p_external );
183 for( int i = 0; i < 4; i++ )
185 p_ff->data[i] = NULL;
186 p_ff->linesize[i] = 0;
188 if( i == 0 || i == 3 )
189 p_ff->data[i] = 1; // dummy
195 static int Extract( vlc_va_t *p_external, picture_t *p_picture, AVFrame *p_ff )
197 vlc_va_vda_t *p_va = vlc_va_vda_Get( p_external );
198 CVPixelBufferRef cv_buffer = ( CVPixelBufferRef )p_ff->data[3];
202 msg_Dbg( p_va->p_log, "Frame buffer is empty.");
206 if( p_va->hw_ctx.cv_pix_fmt_type == kCVPixelFormatType_420YpCbCr8Planar )
208 if( !p_va->image_cache.buffer )
211 vda_Copy420YpCbCr8Planar( p_picture,
215 &p_va->image_cache );
218 vda_Copy422YpCbCr8( p_picture, cv_buffer );
223 static void Release( vlc_va_t *p_external, AVFrame *p_ff )
225 VLC_UNUSED( p_external );
226 CVPixelBufferRef cv_buffer = ( CVPixelBufferRef )p_ff->data[3];
229 CFRelease( cv_buffer );
232 static void Close( vlc_va_t *p_external )
234 vlc_va_vda_t *p_va = vlc_va_vda_Get( p_external );
236 ff_vda_destroy_decoder( &p_va->hw_ctx ) ;
238 if( p_va->hw_ctx.cv_pix_fmt_type == kCVPixelFormatType_420YpCbCr8Planar )
239 CopyCleanCache( &p_va->image_cache );
244 int vlc_va_New( vlc_va_t *external, int pixfmt, int i_codec_id,
245 const es_format_t *fmt )
247 if( pixfmt != PIX_FMT_VDA_VLD || i_codec_id != CODEC_ID_H264 )
250 if( fmt->p_extra == NULL || fmt->i_extra < 7 )
252 msg_Warn( p_log, "VDA requires extradata." );
256 vlc_va_vda_t *p_va = calloc( 1, sizeof(*p_va) );
260 p_va->p_log = VLC_OBJECT(external);
261 p_va->p_extradata = fmt->p_extra;
262 p_va->i_extradata = fmt->i_extra;
264 external->sys = p_va;
265 external->description = (char *)"VDA";
266 external->setup = Setup;
268 external->release = Release;
269 external->extract = Extract;
270 external->close = Close;