diff options
Diffstat (limited to 'libavcodec/dv_profile.c')
| -rw-r--r-- | libavcodec/dv_profile.c | 58 |
1 files changed, 49 insertions, 9 deletions
diff --git a/libavcodec/dv_profile.c b/libavcodec/dv_profile.c index 74c529d727..66505c886b 100644 --- a/libavcodec/dv_profile.c +++ b/libavcodec/dv_profile.c @@ -1,18 +1,18 @@ /* - * This file is part of Libav. + * This file is part of FFmpeg. * - * Libav is free software; you can redistribute it and/or + * FFmpeg is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * - * Libav is distributed in the hope that it will be useful, + * FFmpeg is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public - * License along with Libav; if not, write to the Free Software + * License along with FFmpeg; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ @@ -21,6 +21,7 @@ #include <stdint.h> #include "libavutil/common.h" +#include "libavutil/intreadwrite.h" #include "libavutil/log.h" #include "libavutil/pixdesc.h" @@ -256,22 +257,30 @@ void ff_dv_print_profiles(void *logctx, int loglevel) #endif /* CONFIG_DVPROFILE */ -const AVDVProfile *av_dv_frame_profile(const AVDVProfile *sys, +const AVDVProfile* ff_dv_frame_profile(AVCodecContext* codec, const AVDVProfile *sys, const uint8_t *frame, unsigned buf_size) { #if CONFIG_DVPROFILE int i, dsf, stype; - if (buf_size < 80 * 5 + 48 + 4) + if(buf_size < DV_PROFILE_BYTES) return NULL; dsf = (frame[3] & 0x80) >> 7; stype = frame[80 * 5 + 48 + 3] & 0x1f; /* 576i50 25Mbps 4:1:1 is a special case */ - if (dsf == 1 && stype == 0 && frame[4] & 0x07 /* the APT field */) + if ((dsf == 1 && stype == 0 && frame[4] & 0x07 /* the APT field */) || + (stype == 31 && codec && codec->codec_tag==AV_RL32("SL25") && codec->coded_width==720 && codec->coded_height==576)) return &dv_profiles[2]; + if( stype == 0 + && codec + && (codec->codec_tag==AV_RL32("dvsd") || codec->codec_tag==AV_RL32("CDVC")) + && codec->coded_width ==720 + && codec->coded_height==576) + return &dv_profiles[1]; + for (i = 0; i < FF_ARRAY_ELEMS(dv_profiles); i++) if (dsf == dv_profiles[i].dsf && stype == dv_profiles[i].video_stype) return &dv_profiles[i]; @@ -279,23 +288,54 @@ const AVDVProfile *av_dv_frame_profile(const AVDVProfile *sys, /* check if old sys matches and assumes corrupted input */ if (sys && buf_size == sys->frame_size) return sys; + + /* hack for trac issue #217, dv files created with QuickTime 3 */ + if ((frame[3] & 0x7f) == 0x3f && frame[80 * 5 + 48 + 3] == 0xff) + return &dv_profiles[dsf]; #endif return NULL; } +const AVDVProfile *av_dv_frame_profile(const AVDVProfile *sys, + const uint8_t *frame, unsigned buf_size) +{ + return ff_dv_frame_profile(NULL, sys, frame, buf_size); +} + const AVDVProfile *av_dv_codec_profile(int width, int height, enum AVPixelFormat pix_fmt) { #if CONFIG_DVPROFILE + return av_dv_codec_profile2(width, height, pix_fmt, (AVRational){0, 0}); +#endif + + return NULL; +} + +const AVDVProfile *av_dv_codec_profile2(int width, int height, + enum AVPixelFormat pix_fmt, + AVRational frame_rate) +{ + const AVDVProfile *p = NULL; +#if CONFIG_DVPROFILE int i; + /* frame rate is necessary to select between 720p50 and 720p60 profiles */ + int invalid_framerate = frame_rate.num == 0 || frame_rate.den == 0; for (i = 0; i < FF_ARRAY_ELEMS(dv_profiles); i++) if (height == dv_profiles[i].height && pix_fmt == dv_profiles[i].pix_fmt && width == dv_profiles[i].width) - return &dv_profiles[i]; + { + if( invalid_framerate || av_div_q(dv_profiles[i].time_base, frame_rate).num == 1 ) + return &dv_profiles[i]; + + if(!p) + p = &dv_profiles[i]; + } #endif - return NULL; + return p; } + |