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| author | Vittorio Giovara <vittorio.giovara@gmail.com> | 2015-09-22 13:57:56 +0200 |
|---|---|---|
| committer | Vittorio Giovara <vittorio.giovara@gmail.com> | 2015-09-24 10:56:44 +0200 |
| commit | 588a5619da0d041e55b365f63d0fa9c72bdbd4d3 (patch) | |
| tree | 910a1f3a0d517e427787aeef16b68ae50415931b | |
| parent | a9b8c638cfe2f82191db65e3e3a39f3b35df81f5 (diff) | |
| download | ffmpeg-588a5619da0d041e55b365f63d0fa9c72bdbd4d3.tar.gz | |
dxv: Parse ancillary encoder information
Header does not contain the number of channels, but rather the encoder
version, so rename the variable, and read the additional byte.
| -rw-r--r-- | libavcodec/dxv.c | 14 |
1 files changed, 9 insertions, 5 deletions
diff --git a/libavcodec/dxv.c b/libavcodec/dxv.c index dc11f38def..22148a9206 100644 --- a/libavcodec/dxv.c +++ b/libavcodec/dxv.c @@ -322,7 +322,8 @@ static int dxv_decode(AVCodecContext *avctx, void *data, GetByteContext *gbc = &ctx->gbc; int (*decompress_tex)(AVCodecContext *avctx); uint32_t tag; - int channels, size = 0, old_type = 0; + int version_major, version_minor = 0; + int size = 0, old_type = 0; int ret; bytestream2_init(gbc, avpkt->data, avpkt->size); @@ -351,7 +352,8 @@ static int dxv_decode(AVCodecContext *avctx, void *data, /* Old version does not have a real header, just size and type. */ size = tag & 0x00FFFFFF; old_type = tag >> 24; - channels = old_type & 0x0F; + version_major = (old_type & 0x0F) - 1; + if (old_type & 0x40) { av_log(avctx, AV_LOG_DEBUG, "LZF compression and DXT5 texture "); ctx->tex_funct = ctx->texdsp.dxt5_block; @@ -371,11 +373,13 @@ static int dxv_decode(AVCodecContext *avctx, void *data, /* New header is 12 bytes long. */ if (!old_type) { - channels = bytestream2_get_byte(gbc); - bytestream2_skip(gbc, 3); // unknown + version_major = bytestream2_get_byte(gbc) - 1; + version_minor = bytestream2_get_byte(gbc); + + bytestream2_skip(gbc, 2); // unknown size = bytestream2_get_le32(gbc); } - av_log(avctx, AV_LOG_DEBUG, "(%d channels)\n", channels); + av_log(avctx, AV_LOG_DEBUG, "(version %d.%d)\n", version_major, version_minor); if (size != bytestream2_get_bytes_left(gbc)) { av_log(avctx, AV_LOG_ERROR, "Incomplete or invalid file (%u > %u)\n.", |