[vlc-devel] [PATCH 2/2] gstdecode: handle fourcc mismatch between gst vlc
Thomas Guillem
thomas at gllm.fr
Mon Oct 12 09:17:43 CEST 2020
On Sun, Sep 27, 2020, at 20:27, Vikram Fugro wrote:
> Add raw video fourcc conversion support to convert
> from gstreamer representation (for strings that are
> not equal to length 4) to vlc representation.
> ---
> modules/codec/Makefile.am | 4 +-
> modules/codec/gstreamer/fourcc.c | 92 +++++++++++++++++++
> modules/codec/gstreamer/gstvlc.h | 34 +++++++
> .../gstreamer/gstvlcpictureplaneallocator.c | 26 +++++-
> 4 files changed, 151 insertions(+), 5 deletions(-)
> create mode 100644 modules/codec/gstreamer/fourcc.c
> create mode 100644 modules/codec/gstreamer/gstvlc.h
>
> diff --git a/modules/codec/Makefile.am b/modules/codec/Makefile.am
> index f8ff8b35bc..cd61920831 100644
> --- a/modules/codec/Makefile.am
> +++ b/modules/codec/Makefile.am
> @@ -604,7 +604,9 @@ libgstdecode_plugin_la_SOURCES =
> codec/gstreamer/gstdecode.c \
> codec/gstreamer/gstvlcvideopool.c \
> codec/gstreamer/gstvlcvideopool.h \
> codec/gstreamer/gstvlcvideosink.c \
> - codec/gstreamer/gstvlcvideosink.h
> + codec/gstreamer/gstvlcvideosink.h \
> + codec/gstreamer/fourcc.c \
> + codec/gstreamer/gstvlc.h
> libgstdecode_plugin_la_CFLAGS = $(AM_CFLAGS) $(GST_VIDEO_CFLAGS)
> $(GST_APP_CFLAGS)
> libgstdecode_plugin_la_LIBADD = $(GST_VIDEO_LIBS) $(GST_APP_LIBS)
> if HAVE_GST_DECODE
> diff --git a/modules/codec/gstreamer/fourcc.c
> b/modules/codec/gstreamer/fourcc.c
> new file mode 100644
> index 0000000000..28d92890bf
> --- /dev/null
> +++ b/modules/codec/gstreamer/fourcc.c
> @@ -0,0 +1,92 @@
> +
> +/*****************************************************************************
> + * fourcc.c: convert between gst <-> vlc formats
> +
> *****************************************************************************
> + * Copyright (C) 2020 VLC authors and VideoLAN
> + * $Id:
> + *
> + * Author: Vikram Fugro <vikram.fugro at gmail.com>
> + *
> + * This library is free software; you can redistribute it and/or
> + * modify it under the terms of the GNU Library General Public
> + * License as published by the Free Software Foundation; either
> + * version 2.1 of the License, or (at your option) any later version.
> + *
> + * This library 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 Library General Public
> + * License along with this library; if not, write to the Free Software
> + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
> 02110-1301 USA
> +
> *****************************************************************************/
> +
> +/*****************************************************************************
> + * Preamble
> +
> *****************************************************************************/
> +
> +#include "gstvlc.h"
> +
> +typedef struct
> +{
> + char gst [10];
> + vlc_fourcc_t i_fourcc;
> +} gst_vlc_rawvideo_fourcc;
> +
> +/*
> + * Raw Video Formats
> + */
> +static const gst_vlc_rawvideo_fourcc raw_video_fmts[] =
> +{
> + // NOTE: These should be sorted entries, keyed by `gst` field
> + // cat entries | tr -dc "[:alnum:][:space:]_" | sort -n -k1 |
> xargs printf "{ \"%s\", %s },\n"
> + { "I420_10BE", VLC_CODEC_I420_10B },
> + { "I420_10LE", VLC_CODEC_I420_10L },
> + { "I420_12BE", VLC_CODEC_I420_12B },
> + { "I420_12LE", VLC_CODEC_I420_12L },
> + { "I420_16BE", VLC_CODEC_I420_16B },
> + { "I420_16LE", VLC_CODEC_I420_16L },
> + { "I420_9BE", VLC_CODEC_I420_9B },
> + { "I420_9LE", VLC_CODEC_I420_9L },
> + { "I422_10BE", VLC_CODEC_I422_10B },
> + { "I422_10LE", VLC_CODEC_I422_10L },
> + { "I422_12BE", VLC_CODEC_I422_12B },
> + { "I422_12LE", VLC_CODEC_I422_12L },
> + { "I422_16BE", VLC_CODEC_I422_16B },
> + { "I422_16LE", VLC_CODEC_I422_16L },
> + { "I422_9BE", VLC_CODEC_I422_9B },
> + { "I422_9LE", VLC_CODEC_I422_9L },
> + { "I444_10BE", VLC_CODEC_I444_10B },
> + { "I444_10LE", VLC_CODEC_I444_10L },
> + { "I444_12BE", VLC_CODEC_I444_12B },
> + { "I444_12LE", VLC_CODEC_I444_12L },
> + { "I444_16BE", VLC_CODEC_I444_16B },
> + { "I444_16LE", VLC_CODEC_I444_16L },
> + { "I444_9BE", VLC_CODEC_I444_9B },
> + { "I444_9LE", VLC_CODEC_I444_9L },
> +};
> +
> +static int compare_func( const void* key, const void* ent )
> +{
> + return strcmp( (char*)key, ((gst_vlc_rawvideo_fourcc*)ent)->gst );
> +}
> +
> +vlc_fourcc_t GetGstVLCFourcc( const char* gst )
> +{
> + gst_vlc_rawvideo_fourcc* found = NULL;
> +
> + if( !gst )
> + {
> + return VLC_CODEC_UNKNOWN;
> + }
> +
> + found = bsearch( gst, raw_video_fmts,
> + ARRAY_SIZE(raw_video_fmts),
> sizeof(gst_vlc_rawvideo_fourcc),
> + compare_func );
> +
> + if( !found )
> + return VLC_CODEC_UNKNOWN;
> + else
> + return found->i_fourcc;
> +}
> diff --git a/modules/codec/gstreamer/gstvlc.h
> b/modules/codec/gstreamer/gstvlc.h
> new file mode 100644
> index 0000000000..f99b827d8f
> --- /dev/null
> +++ b/modules/codec/gstreamer/gstvlc.h
> @@ -0,0 +1,34 @@
> +/*****************************************************************************
> + * gst.h:
> +
> *****************************************************************************
> + * Copyright (C) 2020 VLC authors and VideoLAN
> + *
> + * Author: Vikram Fugro <vikram.fugro at gmail.com>
> + *
> + * This library is free software; you can redistribute it and/or
> + * modify it under the terms of the GNU Library General Public
> + * License as published by the Free Software Foundation; either
> + * version 2.1 of the License, or (at your option) any later version.
> + *
> + * This library 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 Library General Public
> + * License along with this library; if not, write to the Free Software
> + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
> 02110-1301 USA
> +
> *****************************************************************************/
> +
> +/*****************************************************************************
> + * Preamble
> +
> *****************************************************************************/
> +#ifndef VLC_GST_H_
> +#define VLC_GST_H_
> +
> +#include <vlc_common.h>
> +#include <vlc_codec.h>
> +
> +vlc_fourcc_t GetGstVLCFourcc( const char* );
> +
> +#endif /* VLC_GST_H_ */
> diff --git a/modules/codec/gstreamer/gstvlcpictureplaneallocator.c
> b/modules/codec/gstreamer/gstvlcpictureplaneallocator.c
> index 2245ee551a..e240435107 100644
> --- a/modules/codec/gstreamer/gstvlcpictureplaneallocator.c
> +++ b/modules/codec/gstreamer/gstvlcpictureplaneallocator.c
> @@ -27,6 +27,7 @@
> #include <gst/gst.h>
>
> #include "gstvlcpictureplaneallocator.h"
> +#include "gstvlc.h"
>
> #include <vlc_common.h>
>
> @@ -130,6 +131,22 @@ static GstMemory* gst_vlc_picture_plane_copy(
> return NULL;
> }
>
> +static vlc_fourcc_t gst_vlc_to_map_format( char* psz_fourcc )
Should be const char.
> +{
> + if( !psz_fourcc )
> + return VLC_CODEC_UNKNOWN;
> +
> + if( strlen( psz_fourcc ) != 4 )
> + {
> + return GetGstVLCFourcc( psz_fourcc );
> + }
> + else
> + {
> + return vlc_fourcc_GetCodecFromString(
> + VIDEO_ES, psz_fourcc );
> + }
> +}
> +
> void gst_vlc_picture_plane_allocator_release(
> GstVlcPicturePlaneAllocator *p_allocator, GstBuffer *p_buffer )
> {
> @@ -212,6 +229,7 @@ bool gst_vlc_picture_plane_allocator_alloc(
> return true;
> }
>
> +
> bool gst_vlc_set_vout_fmt( GstVideoInfo *p_info, GstVideoAlignment
> *p_align,
> GstCaps *p_caps, decoder_t *p_dec )
> {
> @@ -221,10 +239,10 @@ bool gst_vlc_set_vout_fmt( GstVideoInfo *p_info,
> GstVideoAlignment *p_align,
> vlc_fourcc_t i_chroma;
> int i_padded_width, i_padded_height;
>
> - i_chroma = p_outfmt->i_codec = vlc_fourcc_GetCodecFromString(
> - VIDEO_ES,
> - gst_structure_get_string( p_str, "format" ) );
> - if( !i_chroma )
> + const char* psz_fourcc = gst_structure_get_string( p_str, "format" );
> +
> + i_chroma = p_outfmt->i_codec = gst_vlc_to_map_format( psz_fourcc );
> + if( !i_chroma || i_chroma == VLC_CODEC_UNKNOWN )
> {
> msg_Err( p_dec, "video chroma type not supported" );
> return false;
> --
> 2.25.1
>
> _______________________________________________
> vlc-devel mailing list
> To unsubscribe or modify your subscription options:
> https://mailman.videolan.org/listinfo/vlc-devel
More information about the vlc-devel
mailing list