Add experimental support for vp9 in iso-bmff

Implemented according to the draft specification
"VP Codec ISO Media File Format Binding":
http://www.webmproject.org/vp9/#draft-vp-codec-iso-media-file-format-binding

'-strict -2' is required to use this feature.

Signed-off-by: Ronald S. Bultje <rsbultje@gmail.com>

5 files changed, 225 insertions, 1 deletions

diff --git a/libavformat/Makefile b/libavformat/Makefile
index 481f3b183e..813872ba48 100644
--- a/libavformat/Makefile
+++ b/libavformat/Makefile
@@ -276,7 +276,7 @@ OBJS-$(CONFIG_MM_DEMUXER)                += mm.o
 OBJS-$(CONFIG_MMF_DEMUXER)               += mmf.o
 OBJS-$(CONFIG_MMF_MUXER)                 += mmf.o rawenc.o
 OBJS-$(CONFIG_MOV_DEMUXER)               += mov.o mov_chan.o replaygain.o
-OBJS-$(CONFIG_MOV_MUXER)                 += movenc.o avc.o hevc.o \
+OBJS-$(CONFIG_MOV_MUXER)                 += movenc.o avc.o hevc.o vpcc.o \
                                             movenchint.o mov_chan.o rtp.o \
                                             movenccenc.o rawutils.o
 OBJS-$(CONFIG_MP2_MUXER)                 += mp3enc.o rawenc.o id3v2enc.o
diff --git a/libavformat/isom.c b/libavformat/isom.c
index b1757e2e86..9a6526817d 100644
--- a/libavformat/isom.c
+++ b/libavformat/isom.c
@@ -59,6 +59,7 @@ const AVCodecTag ff_mp4_obj_type[] = {
     { AV_CODEC_ID_AC3         , 0xA5 },
     { AV_CODEC_ID_EAC3        , 0xA6 },
     { AV_CODEC_ID_DTS         , 0xA9 }, /* mp4ra.org */
+    { AV_CODEC_ID_VP9         , 0xC0 }, /* non standard, update when there is a standard value */
     { AV_CODEC_ID_TSCC2       , 0xD0 }, /* non standard, camtasia uses it */
     { AV_CODEC_ID_VORBIS      , 0xDD }, /* non standard, gpac uses it */
     { AV_CODEC_ID_DVD_SUBTITLE, 0xE0 }, /* non standard, see unsupported-embedded-subs-2.mp4 */
@@ -179,6 +180,8 @@ const AVCodecTag ff_codec_movvideo_tags[] = {
     { AV_CODEC_ID_H264, MKTAG('a', 'i', 'v', 'x') }, /* XAVC 4:2:2 10bit */
     { AV_CODEC_ID_H264, MKTAG('r', 'v', '6', '4') }, /* X-Com Radvision */
 
+    { AV_CODEC_ID_VP9,  MKTAG('v', 'p', '0', '9') }, /* VP9 */
+
     { AV_CODEC_ID_MPEG1VIDEO, MKTAG('m', '1', 'v', ' ') },
     { AV_CODEC_ID_MPEG1VIDEO, MKTAG('m', '1', 'v', '1') }, /* Apple MPEG-1 Camcorder */
     { AV_CODEC_ID_MPEG1VIDEO, MKTAG('m', 'p', 'e', 'g') }, /* MPEG */
diff --git a/libavformat/movenc.c b/libavformat/movenc.c
index 2f00091b63..837e1e5fa3 100644
--- a/libavformat/movenc.c
+++ b/libavformat/movenc.c
@@ -49,6 +49,7 @@
 #include "hevc.h"
 #include "rtpenc.h"
 #include "mov_chan.h"
+#include "vpcc.h"
 
 static const AVOption options[] = {
     { "movflags", "MOV muxer flags", offsetof(MOVMuxContext, flags), AV_OPT_TYPE_FLAGS, {.i64 = 0}, INT_MIN, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, "movflags" },
@@ -1039,6 +1040,17 @@ static int mov_write_avcc_tag(AVIOContext *pb, MOVTrack *track)
     return update_size(pb, pos);
 }
 
+static int mov_write_vpcc_tag(AVFormatContext *s, AVIOContext *pb, MOVTrack *track)
+{
+    int64_t pos = avio_tell(pb);
+
+    avio_wb32(pb, 0);
+    ffio_wfourcc(pb, "vpcC");
+    avio_wb32(pb, 0); /* version & flags */
+    ff_isom_write_vpcc(s, pb, track->par);
+    return update_size(pb, pos);
+}
+
 static int mov_write_hvcc_tag(AVIOContext *pb, MOVTrack *track)
 {
     int64_t pos = avio_tell(pb);
@@ -1143,6 +1155,7 @@ static int mp4_get_codec_tag(AVFormatContext *s, MOVTrack *track)
 
     if      (track->par->codec_id == AV_CODEC_ID_H264)      tag = MKTAG('a','v','c','1');
     else if (track->par->codec_id == AV_CODEC_ID_HEVC)      tag = MKTAG('h','e','v','1');
+    else if (track->par->codec_id == AV_CODEC_ID_VP9)       tag = MKTAG('v','p','0','9');
     else if (track->par->codec_id == AV_CODEC_ID_AC3)       tag = MKTAG('a','c','-','3');
     else if (track->par->codec_id == AV_CODEC_ID_EAC3)      tag = MKTAG('e','c','-','3');
     else if (track->par->codec_id == AV_CODEC_ID_DIRAC)     tag = MKTAG('d','r','a','c');
@@ -1758,6 +1771,8 @@ static int mov_write_video_tag(AVIOContext *pb, MOVMuxContext *mov, MOVTrack *tr
         mov_write_avcc_tag(pb, track);
         if (track->mode == MODE_IPOD)
             mov_write_uuid_tag_ipod(pb);
+    } else if (track->par->codec_id == AV_CODEC_ID_VP9) {
+        mov_write_vpcc_tag(mov->fc, pb, track);
     } else if (track->par->codec_id == AV_CODEC_ID_VC1 && track->vos_len > 0)
         mov_write_dvc1_tag(pb, track);
     else if (track->par->codec_id == AV_CODEC_ID_VP6F ||
@@ -5369,6 +5384,17 @@ static int mov_write_header(AVFormatContext *s)
                         pix_fmt == AV_PIX_FMT_MONOWHITE ||
                         pix_fmt == AV_PIX_FMT_MONOBLACK;
             }
+            if (track->mode == MODE_MP4 &&
+                track->par->codec_id == AV_CODEC_ID_VP9) {
+                if (s->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) {
+                    av_log(s, AV_LOG_ERROR,
+                           "VP9 in MP4 support is experimental, add "
+                           "'-strict %d' if you want to use it.\n",
+                           FF_COMPLIANCE_EXPERIMENTAL);
+                    ret = AVERROR_EXPERIMENTAL;
+                    goto error;
+                }
+            }
         } else if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO) {
             track->timescale = st->codecpar->sample_rate;
             if (!st->codecpar->frame_size && !av_get_bits_per_sample(st->codecpar->codec_id)) {
diff --git a/libavformat/vpcc.c b/libavformat/vpcc.c
new file mode 100644
index 0000000000..2390e1711c
--- /dev/null
+++ b/libavformat/vpcc.c
@@ -0,0 +1,148 @@
+/*
+ * Copyright (c) 2016 Google Inc.
+ * Copyright (c) 2016 KongQun Yang (kqyang@google.com)
+ *
+ * This file is part of FFmpeg.
+ *
+ * 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.
+ *
+ * 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 FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include "libavutil/pixdesc.h"
+#include "libavutil/pixfmt.h"
+#include "vpcc.h"
+
+enum VpxColorSpace
+{
+    VPX_COLOR_SPACE_UNSPECIFIED = 0,
+    VPX_COLOR_SPACE_BT601 = 1,
+    VPX_COLOR_SPACE_BT709 = 2,
+    VPX_COLOR_SPACE_SMPTE_170 = 3,
+    VPX_COLOR_SPACE_SMPTE_240 = 4,
+    VPX_COLOR_SPACE_BT2020_NCL = 5,
+    VPX_COLOR_SPACE_BT2020_CL = 6,
+    VPX_COLOR_SPACE_RGB = 7,
+};
+
+static int get_vpx_color_space(AVFormatContext *s,
+                               enum AVColorSpace color_space)
+{
+    switch (color_space) {
+    case AVCOL_SPC_RGB:
+        return VPX_COLOR_SPACE_RGB;
+    case AVCOL_SPC_BT709:
+        return VPX_COLOR_SPACE_BT709;
+    case AVCOL_SPC_UNSPECIFIED:
+        return VPX_COLOR_SPACE_UNSPECIFIED;
+    case AVCOL_SPC_BT470BG:
+        return VPX_COLOR_SPACE_BT601;
+    case AVCOL_SPC_SMPTE170M:
+        return VPX_COLOR_SPACE_SMPTE_170;
+    case AVCOL_SPC_SMPTE240M:
+        return VPX_COLOR_SPACE_SMPTE_240;
+    case AVCOL_SPC_BT2020_NCL:
+        return VPX_COLOR_SPACE_BT2020_NCL;
+    case AVCOL_SPC_BT2020_CL:
+        return VPX_COLOR_SPACE_BT2020_CL;
+    default:
+        av_log(s, AV_LOG_ERROR, "Unsupported color space (%d)\n", color_space);
+        return -1;
+    }
+}
+
+enum VPX_CHROMA_SUBSAMPLING
+{
+    VPX_SUBSAMPLING_420_VERTICAL = 0,
+    VPX_SUBSAMPLING_420_COLLOCATED_WITH_LUMA = 1,
+    VPX_SUBSAMPLING_422 = 2,
+    VPX_SUBSAMPLING_444 = 3,
+};
+
+static int get_vpx_chroma_subsampling(AVFormatContext *s,
+                                      enum AVPixelFormat pixel_format,
+                                      enum AVChromaLocation chroma_location)
+{
+    int chroma_w, chroma_h;
+    if (av_pix_fmt_get_chroma_sub_sample(pixel_format, &chroma_w, &chroma_h) == 0) {
+        if (chroma_w == 1 && chroma_h == 1) {
+            return (chroma_location == AVCHROMA_LOC_LEFT)
+                       ? VPX_SUBSAMPLING_420_VERTICAL
+                       : VPX_SUBSAMPLING_420_COLLOCATED_WITH_LUMA;
+        } else if (chroma_w == 1 && chroma_h == 0) {
+            return VPX_SUBSAMPLING_422;
+        } else if (chroma_w == 0 && chroma_h == 0) {
+            return VPX_SUBSAMPLING_444;
+        }
+    }
+    av_log(s, AV_LOG_ERROR, "Unsupported pixel format (%d)\n", pixel_format);
+    return -1;
+}
+
+static int get_bit_depth(AVFormatContext *s, enum AVPixelFormat pixel_format)
+{
+    const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pixel_format);
+    if (desc == NULL) {
+        av_log(s, AV_LOG_ERROR, "Unsupported pixel format (%d)\n",
+               pixel_format);
+        return -1;
+    }
+    return desc->comp[0].depth;
+}
+
+static int get_vpx_transfer_function(
+    enum AVColorTransferCharacteristic transfer)
+{
+    return transfer == AVCOL_TRC_SMPTEST2084;
+}
+
+static int get_vpx_video_full_range_flag(enum AVColorRange color_range)
+{
+    return color_range == AVCOL_RANGE_JPEG;
+}
+
+int ff_isom_write_vpcc(AVFormatContext *s, AVIOContext *pb,
+                       AVCodecParameters *par)
+{
+    int profile = par->profile;
+    int level = par->level == FF_LEVEL_UNKNOWN ? 0 : par->level;
+    int bit_depth = get_bit_depth(s, par->format);
+    int vpx_color_space = get_vpx_color_space(s, par->color_space);
+    int vpx_chroma_subsampling =
+        get_vpx_chroma_subsampling(s, par->format, par->chroma_location);
+    int vpx_transfer_function = get_vpx_transfer_function(par->color_trc);
+    int vpx_video_full_range_flag =
+        get_vpx_video_full_range_flag(par->color_range);
+
+    if (bit_depth < 0 || vpx_color_space < 0 || vpx_chroma_subsampling < 0)
+        return AVERROR_INVALIDDATA;
+
+    if (profile == FF_PROFILE_UNKNOWN) {
+        if (vpx_chroma_subsampling == VPX_SUBSAMPLING_420_VERTICAL ||
+            vpx_chroma_subsampling == VPX_SUBSAMPLING_420_COLLOCATED_WITH_LUMA) {
+            profile = (bit_depth == 8) ? FF_PROFILE_VP9_0 : FF_PROFILE_VP9_2;
+        } else {
+            profile = (bit_depth == 8) ? FF_PROFILE_VP9_1 : FF_PROFILE_VP9_3;
+        }
+    }
+
+    avio_w8(pb, profile);
+    avio_w8(pb, level);
+    avio_w8(pb, (bit_depth << 4) | vpx_color_space);
+    avio_w8(pb, (vpx_chroma_subsampling << 4) | (vpx_transfer_function << 1) |
+                    vpx_video_full_range_flag);
+
+    // vp9 does not have codec initialization data.
+    avio_wb16(pb, 0);
+    return 0;
+}
diff --git a/libavformat/vpcc.h b/libavformat/vpcc.h
new file mode 100644
index 0000000000..184e8579f1
--- /dev/null
+++ b/libavformat/vpcc.h
@@ -0,0 +1,47 @@
+/*
+ * Copyright (c) 2016 Google Inc.
+ * Copyright (c) 2016 KongQun Yang (kqyang@google.com)
+ *
+ * This file is part of FFmpeg.
+ *
+ * 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.
+ *
+ * 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 FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+/**
+ * @file
+ * internal header for VPx codec configuration utilities.
+ */
+
+#ifndef AVFORMAT_VPCC_H
+#define AVFORMAT_VPCC_H
+
+#include <stdint.h>
+#include "avio.h"
+#include "avformat.h"
+#include "libavcodec/avcodec.h"
+
+/**
+ * Writes VP codec configuration to the provided AVIOContext.
+ *
+ * @param s address of the AVFormatContext for the logging context.
+ * @param pb address of the AVIOContext where the vpcC shall be written.
+ * @param par address of the AVCodecParameters which contains codec information.
+ * @return >=0 in case of success, a negative value corresponding to an AVERROR
+ *         code in case of failure
+ */
+int ff_isom_write_vpcc(AVFormatContext *s, AVIOContext *pb,
+                       AVCodecParameters *par);
+
+#endif /* AVFORMAT_VPCC_H */