NuppelVideo/MythTVVideo support, including rtjpeg decoder

Originally committed as revision 5232 to svn://svn.ffmpeg.org/ffmpeg/trunk

5 files changed, 254 insertions, 1 deletions

diff --git a/libavformat/Makefile b/libavformat/Makefile
index 86cb0cca5a..42bc01f9ec 100644
--- a/libavformat/Makefile
+++ b/libavformat/Makefile
@@ -18,7 +18,7 @@ OBJS+=mpeg.o mpegts.o mpegtsenc.o ffm.o crc.o img.o img2.o raw.o rm.o \
       nut.o wc3movie.o mp3.o westwood.o segafilm.o idcin.o flic.o \
       sierravmd.o matroska.o sol.o electronicarts.o nsvdec.o asf.o \
       ogg2.o oggparsevorbis.o oggparsetheora.o oggparseflac.o daud.o aiff.o \
-      voc.o tta.o mm.o avs.o smacker.o
+      voc.o tta.o mm.o avs.o smacker.o nuv.o
 
 # muxers
 ifeq ($(CONFIG_MUXERS),yes)
diff --git a/libavformat/allformats.c b/libavformat/allformats.c
index 978e089d63..68eef85a10 100644
--- a/libavformat/allformats.c
+++ b/libavformat/allformats.c
@@ -120,6 +120,7 @@ void av_register_all(void)
     voc_init();
     tta_init();
     avs_init();
+    nuv_init();
 
 #ifdef CONFIG_MUXERS
     /* image formats */
diff --git a/libavformat/avformat.h b/libavformat/avformat.h
index 0d36ebdc96..025826892a 100644
--- a/libavformat/avformat.h
+++ b/libavformat/avformat.h
@@ -549,6 +549,9 @@ int nsvdec_init(void);
 /* daud.c */
 int daud_init(void);
 
+/* nuv.c */
+int nuv_init(void);
+
 /* aiff.c */
 int ff_aiff_init(void);
 
diff --git a/libavformat/nuv.c b/libavformat/nuv.c
new file mode 100644
index 0000000000..04bae8f771
--- /dev/null
+++ b/libavformat/nuv.c
@@ -0,0 +1,245 @@
+/*
+ * NuppelVideo demuxer.
+ * Copyright (c) 2006 Reimar Doeffinger.
+ *
+ * This library 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 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 Lesser 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
+ */
+#include "avformat.h"
+#include "avi.h"
+
+typedef struct {
+    int v_id;
+    int a_id;
+} NUVContext;
+
+typedef enum {
+    NUV_VIDEO = 'V',
+    NUV_EXTRADATA = 'D',
+    NUV_AUDIO = 'A',
+    NUV_SEEKP = 'R',
+    NUV_MYTHEXT = 'X'
+} frametype_t;
+
+static int nuv_probe(AVProbeData *p) {
+    if (p->buf_size < 12)
+        return 0;
+    if (!memcmp(p->buf, "NuppelVideo", 12))
+        return AVPROBE_SCORE_MAX;
+    if (!memcmp(p->buf, "MythTVVideo", 12))
+        return AVPROBE_SCORE_MAX;
+    return 0;
+}
+
+//! little macro to sanitize packet size
+#define PKTSIZE(s) (s &  0xffffff)
+
+/**
+ * \brief read until we found all data needed for decoding
+ * \param vst video stream of which to change parameters
+ * \param ast video stream of which to change parameters
+ * \param myth set if this is a MythTVVideo format file
+ * \return 1 if all required codec data was found
+ */
+static int get_codec_data(ByteIOContext *pb, AVStream *vst,
+                          AVStream *ast, int myth) {
+    frametype_t frametype;
+    if (!vst && !myth)
+        return 1; // no codec data needed
+    while (!url_feof(pb)) {
+        int size, subtype;
+        frametype = get_byte(pb);
+        switch (frametype) {
+            case NUV_EXTRADATA:
+                subtype = get_byte(pb);
+                url_fskip(pb, 6);
+                size = PKTSIZE(get_le32(pb));
+                if (subtype == 'R') {
+                    vst->codec->extradata_size = size;
+                    vst->codec->extradata = av_malloc(size);
+                    get_buffer(pb, vst->codec->extradata, size);
+                    size = 0;
+                    if (!myth)
+                        return 1;
+                }
+                break;
+            case NUV_MYTHEXT:
+                url_fskip(pb, 7);
+                size = PKTSIZE(get_le32(pb));
+                if (size != 128 * 4)
+                    break;
+                get_le32(pb); // version
+                if (vst) {
+                    vst->codec->codec_tag = get_le32(pb);
+                    vst->codec->codec_id =
+                        codec_get_id(codec_bmp_tags, vst->codec->codec_tag);
+                } else
+                    url_fskip(pb, 4);
+
+                if (ast) {
+                    ast->codec->codec_tag = get_le32(pb);
+                    ast->codec->sample_rate = get_le32(pb);
+                    ast->codec->bits_per_sample = get_le32(pb);
+                    ast->codec->channels = get_le32(pb);
+                    ast->codec->codec_id =
+                        wav_codec_get_id(ast->codec->codec_tag,
+                                         ast->codec->bits_per_sample);
+                } else
+                    url_fskip(pb, 4 * 4);
+
+                size -= 6 * 4;
+                url_fskip(pb, size);
+                return 1;
+            case NUV_SEEKP:
+                size = 11;
+                break;
+            default:
+                url_fskip(pb, 7);
+                size = PKTSIZE(get_le32(pb));
+                break;
+        }
+        url_fskip(pb, size);
+    }
+    return 0;
+}
+
+static int nuv_header(AVFormatContext *s, AVFormatParameters *ap) {
+    NUVContext *ctx = (NUVContext *)s->priv_data;
+    ByteIOContext *pb = &s->pb;
+    char id_string[12], version_string[5];
+    double aspect, fps;
+    int is_mythtv, width, height, v_packs, a_packs;
+    int stream_nr = 0;
+    AVStream *vst = NULL, *ast = NULL;
+    get_buffer(pb, id_string, 12);
+    is_mythtv = !memcmp(id_string, "MythTVVideo", 12);
+    get_buffer(pb, version_string, 5);
+    url_fskip(pb, 3); // padding
+    width = get_le32(pb);
+    height = get_le32(pb);
+    get_le32(pb); // unused, "desiredwidth"
+    get_le32(pb); // unused, "desiredheight"
+    get_byte(pb); // 'P' == progressive, 'I' == interlaced
+    url_fskip(pb, 3); // padding
+    aspect = av_int2dbl(get_le64(pb));
+    fps = av_int2dbl(get_le64(pb));
+
+    // number of packets per stream type, -1 means unknown, e.g. streaming
+    v_packs = get_le32(pb);
+    a_packs = get_le32(pb);
+    get_le32(pb); // text
+
+    get_le32(pb); // keyframe distance (?)
+
+    if (v_packs) {
+        ctx->v_id = stream_nr++;
+        vst = av_new_stream(s, ctx->v_id);
+        vst->codec->codec_type = CODEC_TYPE_VIDEO;
+        vst->codec->codec_id = CODEC_ID_NUV;
+        vst->codec->codec_tag = MKTAG('R', 'J', 'P', 'G');
+        vst->codec->width = width;
+        vst->codec->height = height;
+        vst->codec->bits_per_sample = 10;
+        vst->codec->sample_aspect_ratio = av_d2q(aspect, 10000);
+        vst->r_frame_rate = av_d2q(1.0 / fps, 10000);
+        av_set_pts_info(vst, 32, 1, 1000);
+    } else
+        ctx->v_id = -1;
+
+    if (a_packs) {
+        ctx->a_id = stream_nr++;
+        ast = av_new_stream(s, ctx->a_id);
+        ast->codec->codec_type = CODEC_TYPE_AUDIO;
+        ast->codec->codec_id = CODEC_ID_PCM_S16LE;
+        ast->codec->channels = 2;
+        ast->codec->sample_rate = 44100;
+        ast->codec->bit_rate = 2 * 2 * 44100 * 8;
+        ast->codec->block_align = 2 * 2;
+        ast->codec->bits_per_sample = 16;
+        av_set_pts_info(ast, 32, 1, 1000);
+    } else
+        ctx->a_id = -1;
+
+    get_codec_data(pb, vst, ast, is_mythtv);
+    return 0;
+}
+
+#define HDRSIZE 12
+
+static int nuv_packet(AVFormatContext *s, AVPacket *pkt) {
+    NUVContext *ctx = (NUVContext *)s->priv_data;
+    ByteIOContext *pb = &s->pb;
+    uint8_t hdr[HDRSIZE];
+    frametype_t frametype;
+    int ret, size;
+    while (!url_feof(pb)) {
+        ret = get_buffer(pb, hdr, HDRSIZE);
+        if (ret <= 0)
+            return ret;
+        frametype = hdr[0];
+        size = PKTSIZE(LE_32(&hdr[8]));
+        switch (frametype) {
+            case NUV_VIDEO:
+            case NUV_EXTRADATA:
+                if (ctx->v_id < 0) {
+                    av_log(s, AV_LOG_ERROR, "Video packet in file without video stream!\n");
+                    url_fskip(pb, size);
+                    break;
+                }
+                ret = av_new_packet(pkt, HDRSIZE + size);
+                if (ret < 0)
+                    return ret;
+                pkt->pos = url_ftell(pb);
+                pkt->pts = LE_32(&hdr[4]);
+                pkt->stream_index = ctx->v_id;
+                memcpy(pkt->data, hdr, HDRSIZE);
+                ret = get_buffer(pb, pkt->data + HDRSIZE, size);
+                return ret;
+            case NUV_AUDIO:
+                if (ctx->a_id < 0) {
+                    av_log(s, AV_LOG_ERROR, "Audio packet in file without audio stream!\n");
+                    url_fskip(pb, size);
+                    break;
+                }
+                ret = av_get_packet(pb, pkt, size);
+                pkt->pts = LE_32(&hdr[4]);
+                pkt->stream_index = ctx->a_id;
+                return ret;
+            case NUV_SEEKP:
+                // contains no data, size value is invalid
+                break;
+            default:
+                url_fskip(pb, size);
+                break;
+        }
+    }
+    return AVERROR_IO;
+}
+
+static AVInputFormat nuv_iformat = {
+    "nuv",
+    "NuppelVideo format",
+    sizeof(NUVContext),
+    nuv_probe,
+    nuv_header,
+    nuv_packet,
+    NULL,
+    NULL,
+};
+
+int nuv_init(void) {
+    av_register_input_format(&nuv_iformat);
+    return 0;
+}
+
diff --git a/libavformat/wav.c b/libavformat/wav.c
index b712c5832c..0f04456445 100644
--- a/libavformat/wav.c
+++ b/libavformat/wav.c
@@ -45,6 +45,10 @@ const CodecTag codec_wav_tags[] = {
     { CODEC_ID_ADPCM_CT, 0x200 },
     { CODEC_ID_ADPCM_SWF, ('S'<<8)+'F' },
     { CODEC_ID_TRUESPEECH, 0x22 },
+
+    // for NuppelVideo (nuv.c)
+    { CODEC_ID_PCM_S16LE, MKTAG('R', 'A', 'W', 'A') },
+    { CODEC_ID_MP3, MKTAG('L', 'A', 'M', 'E') },
     { 0, 0 },
 };