Merge commit '2d2d6a4883479403798f4ed46941d5b365823570'

[ffmpeg] / libavformat / matroskaenc.c

diff --git a/libavformat/matroskaenc.c b/libavformat/matroskaenc.c
index 371b9d0bf2bb56035622fb89fc905b79aaf2808d..99d648dcbc6634632da0da911dabcf59661a085d 100644 (file)
--- a/libavformat/matroskaenc.c
+++ b/libavformat/matroskaenc.c
@@ -27,6 +27,7 @@
 #include "isom.h"
 #include "matroska.h"
 #include "riff.h"
+#include "wv.h"
 
 #include "libavutil/avstring.h"
 #include "libavutil/dict.h"
@@ -459,6 +460,15 @@ static int put_xiph_codecpriv(AVFormatContext *s, AVIOContext *pb, AVCodecContex
     return 0;
 }
 
+static int put_wv_codecpriv(AVIOContext *pb, AVCodecContext *codec)
+{
+    if (codec->extradata && codec->extradata_size == 2)
+        avio_write(pb, codec->extradata, 2);
+    else
+        avio_wl16(pb, 0x403); // fallback to the version mentioned in matroska specs
+    return 0;
+}
+
 static void get_aac_sample_rates(AVFormatContext *s, AVCodecContext *codec, int *sample_rate, int *output_sample_rate)
 {
     MPEG4AudioConfig mp4ac;
@@ -488,6 +498,8 @@ static int mkv_write_codecprivate(AVFormatContext *s, AVIOContext *pb, AVCodecCo
             ret = put_xiph_codecpriv(s, dyn_cp, codec);
         else if (codec->codec_id == AV_CODEC_ID_FLAC)
             ret = ff_flac_write_header(dyn_cp, codec, 1);
+        else if (codec->codec_id == AV_CODEC_ID_WAVPACK)
+            ret = put_wv_codecpriv(dyn_cp, codec);
         else if (codec->codec_id == AV_CODEC_ID_H264)
             ret = ff_isom_write_avcc(dyn_cp, codec->extradata, codec->extradata_size);
         else if (codec->codec_id == AV_CODEC_ID_ALAC) {
@@ -662,6 +674,12 @@ static int mkv_write_tracks(AVFormatContext *s)
                         put_ebml_uint(pb, MATROSKA_ID_VIDEOSTEREOMODE, st_mode);
                 }
 
+                if ((tag = av_dict_get(st->metadata, "alpha_mode", NULL, 0)) ||
+                    (tag = av_dict_get( s->metadata, "alpha_mode", NULL, 0)) ||
+                    (codec->pix_fmt == AV_PIX_FMT_YUVA420P)) {
+                    put_ebml_uint(pb, MATROSKA_ID_VIDEOALPHAMODE, 1);
+                }
+
                 if (st->sample_aspect_ratio.num) {
                     int64_t d_width = av_rescale(codec->width, st->sample_aspect_ratio.num, st->sample_aspect_ratio.den);
                     if (d_width > INT_MAX) {
@@ -1131,14 +1149,69 @@ static int mkv_write_ass_blocks(AVFormatContext *s, AVIOContext *pb, AVPacket *p
 }
 #endif
 
+static int mkv_strip_wavpack(const uint8_t *src, uint8_t **pdst, int *size)
+{
+    uint8_t *dst;
+    int srclen = *size;
+    int offset = 0;
+    int ret;
+
+    dst = av_malloc(srclen);
+    if (!dst)
+        return AVERROR(ENOMEM);
+
+    while (srclen >= WV_HEADER_SIZE) {
+        WvHeader header;
+
+        ret = ff_wv_parse_header(&header, src);
+        if (ret < 0)
+            goto fail;
+        src    += WV_HEADER_SIZE;
+        srclen -= WV_HEADER_SIZE;
+
+        if (srclen < header.blocksize) {
+            ret = AVERROR_INVALIDDATA;
+            goto fail;
+        }
+
+        if (header.initial) {
+            AV_WL32(dst + offset, header.samples);
+            offset += 4;
+        }
+        AV_WL32(dst + offset,     header.flags);
+        AV_WL32(dst + offset + 4, header.crc);
+        offset += 8;
+
+        if (!(header.initial && header.final)) {
+            AV_WL32(dst + offset, header.blocksize);
+            offset += 4;
+        }
+
+        memcpy(dst + offset, src, header.blocksize);
+        src    += header.blocksize;
+        srclen -= header.blocksize;
+        offset += header.blocksize;
+    }
+
+    *pdst = dst;
+    *size = offset;
+
+    return 0;
+fail:
+    av_freep(&dst);
+    return ret;
+}
+
 static void mkv_write_block(AVFormatContext *s, AVIOContext *pb,
                             unsigned int blockid, AVPacket *pkt, int flags)
 {
     MatroskaMuxContext *mkv = s->priv_data;
     AVCodecContext *codec = s->streams[pkt->stream_index]->codec;
-    uint8_t *data = NULL;
-    int offset = 0, size = pkt->size;
+    uint8_t *data = NULL, *side_data = NULL;
+    int offset = 0, size = pkt->size, side_data_size = 0;
     int64_t ts = mkv->tracks[pkt->stream_index].write_dts ? pkt->dts : pkt->pts;
+    uint64_t additional_id = 0;
+    ebml_master block_group, block_additions, block_more;
 
     av_log(s, AV_LOG_DEBUG, "Writing block at offset %" PRIu64 ", size %d, "
            "pts %" PRId64 ", dts %" PRId64 ", duration %d, flags %d\n",
@@ -1146,7 +1219,13 @@ static void mkv_write_block(AVFormatContext *s, AVIOContext *pb,
     if (codec->codec_id == AV_CODEC_ID_H264 && codec->extradata_size > 0 &&
         (AV_RB24(codec->extradata) == 1 || AV_RB32(codec->extradata) == 1))
         ff_avc_parse_nal_units_buf(pkt->data, &data, &size);
-    else
+    else if (codec->codec_id == AV_CODEC_ID_WAVPACK) {
+        int ret = mkv_strip_wavpack(pkt->data, &data, &size);
+        if (ret < 0) {
+            av_log(s, AV_LOG_ERROR, "Error stripping a WavPack packet.\n");
+            return;
+        }
+    } else
         data = pkt->data;
 
     if (codec->codec_id == AV_CODEC_ID_PRORES) {
@@ -1156,6 +1235,20 @@ static void mkv_write_block(AVFormatContext *s, AVIOContext *pb,
         offset = 8;
     }
 
+    side_data = av_packet_get_side_data(pkt,
+                                        AV_PKT_DATA_MATROSKA_BLOCKADDITIONAL,
+                                        &side_data_size);
+    if (side_data) {
+        additional_id = AV_RB64(side_data);
+        side_data += 8;
+        side_data_size -= 8;
+    }
+
+    if (side_data_size && additional_id == 1) {
+        block_group = start_ebml_master(pb, MATROSKA_ID_BLOCKGROUP, 0);
+        blockid = MATROSKA_ID_BLOCK;
+    }
+
     put_ebml_id(pb, blockid);
     put_ebml_num(pb, size+4, 0);
     avio_w8(pb, 0x80 | (pkt->stream_index + 1));     // this assumes stream_index is less than 126
@@ -1164,6 +1257,18 @@ static void mkv_write_block(AVFormatContext *s, AVIOContext *pb,
     avio_write(pb, data + offset, size);
     if (data != pkt->data)
         av_free(data);
+
+    if (side_data_size && additional_id == 1) {
+        block_additions = start_ebml_master(pb, MATROSKA_ID_BLOCKADDITIONS, 0);
+        block_more = start_ebml_master(pb, MATROSKA_ID_BLOCKMORE, 0);
+        put_ebml_uint(pb, MATROSKA_ID_BLOCKADDID, 1);
+        put_ebml_id(pb, MATROSKA_ID_BLOCKADDITIONAL);
+        put_ebml_num(pb, side_data_size, 0);
+        avio_write(pb, side_data, side_data_size);
+        end_ebml_master(pb, block_more);
+        end_ebml_master(pb, block_additions);
+        end_ebml_master(pb, block_group);
+    }
 }
 
 static int srt_get_duration(uint8_t **buf)