adding ffmpeg specific version

1 files changed, 526 insertions, 0 deletions

diff --git a/ffmpeg1/libavformat/rtmppkt.c b/ffmpeg1/libavformat/rtmppkt.c
new file mode 100644
index 0000000..3bd28eb
--- /dev/null
+++ b/ffmpeg1/libavformat/rtmppkt.c
@@ -0,0 +1,526 @@
+/*
+ * RTMP input format
+ * Copyright (c) 2009 Kostya Shishkov
+ *
+ * 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 "libavcodec/bytestream.h"
+#include "libavutil/avstring.h"
+#include "libavutil/intfloat.h"
+#include "avformat.h"
+
+#include "rtmppkt.h"
+#include "flv.h"
+#include "url.h"
+
+void ff_amf_write_bool(uint8_t **dst, int val)
+{
+    bytestream_put_byte(dst, AMF_DATA_TYPE_BOOL);
+    bytestream_put_byte(dst, val);
+}
+
+void ff_amf_write_number(uint8_t **dst, double val)
+{
+    bytestream_put_byte(dst, AMF_DATA_TYPE_NUMBER);
+    bytestream_put_be64(dst, av_double2int(val));
+}
+
+void ff_amf_write_string(uint8_t **dst, const char *str)
+{
+    bytestream_put_byte(dst, AMF_DATA_TYPE_STRING);
+    bytestream_put_be16(dst, strlen(str));
+    bytestream_put_buffer(dst, str, strlen(str));
+}
+
+void ff_amf_write_string2(uint8_t **dst, const char *str1, const char *str2)
+{
+    int len1 = 0, len2 = 0;
+    if (str1)
+        len1 = strlen(str1);
+    if (str2)
+        len2 = strlen(str2);
+    bytestream_put_byte(dst, AMF_DATA_TYPE_STRING);
+    bytestream_put_be16(dst, len1 + len2);
+    bytestream_put_buffer(dst, str1, len1);
+    bytestream_put_buffer(dst, str2, len2);
+}
+
+void ff_amf_write_null(uint8_t **dst)
+{
+    bytestream_put_byte(dst, AMF_DATA_TYPE_NULL);
+}
+
+void ff_amf_write_object_start(uint8_t **dst)
+{
+    bytestream_put_byte(dst, AMF_DATA_TYPE_OBJECT);
+}
+
+void ff_amf_write_field_name(uint8_t **dst, const char *str)
+{
+    bytestream_put_be16(dst, strlen(str));
+    bytestream_put_buffer(dst, str, strlen(str));
+}
+
+void ff_amf_write_object_end(uint8_t **dst)
+{
+    /* first two bytes are field name length = 0,
+     * AMF object should end with it and end marker
+     */
+    bytestream_put_be24(dst, AMF_DATA_TYPE_OBJECT_END);
+}
+
+int ff_amf_read_bool(GetByteContext *bc, int *val)
+{
+    if (bytestream2_get_byte(bc) != AMF_DATA_TYPE_BOOL)
+        return AVERROR_INVALIDDATA;
+    *val = bytestream2_get_byte(bc);
+    return 0;
+}
+
+int ff_amf_read_number(GetByteContext *bc, double *val)
+{
+    uint64_t read;
+    if (bytestream2_get_byte(bc) != AMF_DATA_TYPE_NUMBER)
+        return AVERROR_INVALIDDATA;
+    read = bytestream2_get_be64(bc);
+    *val = av_int2double(read);
+    return 0;
+}
+
+int ff_amf_read_string(GetByteContext *bc, uint8_t *str,
+                       int strsize, int *length)
+{
+    int stringlen = 0;
+    int readsize;
+    if (bytestream2_get_byte(bc) != AMF_DATA_TYPE_STRING)
+        return AVERROR_INVALIDDATA;
+    stringlen = bytestream2_get_be16(bc);
+    if (stringlen + 1 > strsize)
+        return AVERROR(EINVAL);
+    readsize = bytestream2_get_buffer(bc, str, stringlen);
+    if (readsize != stringlen) {
+        av_log(NULL, AV_LOG_WARNING,
+               "Unable to read as many bytes as AMF string signaled\n");
+    }
+    str[readsize] = '\0';
+    *length = FFMIN(stringlen, readsize);
+    return 0;
+}
+
+int ff_amf_read_null(GetByteContext *bc)
+{
+    if (bytestream2_get_byte(bc) != AMF_DATA_TYPE_NULL)
+        return AVERROR_INVALIDDATA;
+    return 0;
+}
+
+int ff_rtmp_packet_read(URLContext *h, RTMPPacket *p,
+                        int chunk_size, RTMPPacket *prev_pkt)
+{
+    uint8_t hdr;
+
+    if (ffurl_read(h, &hdr, 1) != 1)
+        return AVERROR(EIO);
+
+    return ff_rtmp_packet_read_internal(h, p, chunk_size, prev_pkt, hdr);
+}
+
+int ff_rtmp_packet_read_internal(URLContext *h, RTMPPacket *p, int chunk_size,
+                                 RTMPPacket *prev_pkt, uint8_t hdr)
+{
+
+    uint8_t t, buf[16];
+    int channel_id, timestamp, data_size, offset = 0;
+    uint32_t extra = 0;
+    enum RTMPPacketType type;
+    int size = 0;
+    int ret;
+
+    size++;
+    channel_id = hdr & 0x3F;
+
+    if (channel_id < 2) { //special case for channel number >= 64
+        buf[1] = 0;
+        if (ffurl_read_complete(h, buf, channel_id + 1) != channel_id + 1)
+            return AVERROR(EIO);
+        size += channel_id + 1;
+        channel_id = AV_RL16(buf) + 64;
+    }
+    data_size = prev_pkt[channel_id].data_size;
+    type      = prev_pkt[channel_id].type;
+    extra     = prev_pkt[channel_id].extra;
+
+    hdr >>= 6;
+    if (hdr == RTMP_PS_ONEBYTE) {
+        timestamp = prev_pkt[channel_id].ts_delta;
+    } else {
+        if (ffurl_read_complete(h, buf, 3) != 3)
+            return AVERROR(EIO);
+        size += 3;
+        timestamp = AV_RB24(buf);
+        if (hdr != RTMP_PS_FOURBYTES) {
+            if (ffurl_read_complete(h, buf, 3) != 3)
+                return AVERROR(EIO);
+            size += 3;
+            data_size = AV_RB24(buf);
+            if (ffurl_read_complete(h, buf, 1) != 1)
+                return AVERROR(EIO);
+            size++;
+            type = buf[0];
+            if (hdr == RTMP_PS_TWELVEBYTES) {
+                if (ffurl_read_complete(h, buf, 4) != 4)
+                    return AVERROR(EIO);
+                size += 4;
+                extra = AV_RL32(buf);
+            }
+        }
+        if (timestamp == 0xFFFFFF) {
+            if (ffurl_read_complete(h, buf, 4) != 4)
+                return AVERROR(EIO);
+            timestamp = AV_RB32(buf);
+        }
+    }
+    if (hdr != RTMP_PS_TWELVEBYTES)
+        timestamp += prev_pkt[channel_id].timestamp;
+
+    if ((ret = ff_rtmp_packet_create(p, channel_id, type, timestamp,
+                                     data_size)) < 0)
+        return ret;
+    p->extra = extra;
+    // save history
+    prev_pkt[channel_id].channel_id = channel_id;
+    prev_pkt[channel_id].type       = type;
+    prev_pkt[channel_id].data_size  = data_size;
+    prev_pkt[channel_id].ts_delta   = timestamp - prev_pkt[channel_id].timestamp;
+    prev_pkt[channel_id].timestamp  = timestamp;
+    prev_pkt[channel_id].extra      = extra;
+    while (data_size > 0) {
+        int toread = FFMIN(data_size, chunk_size);
+        if (ffurl_read_complete(h, p->data + offset, toread) != toread) {
+            ff_rtmp_packet_destroy(p);
+            return AVERROR(EIO);
+        }
+        data_size -= chunk_size;
+        offset    += chunk_size;
+        size      += chunk_size;
+        if (data_size > 0) {
+            if ((ret = ffurl_read_complete(h, &t, 1)) < 0) { // marker
+                ff_rtmp_packet_destroy(p);
+                return ret;
+            }
+            size++;
+            if (t != (0xC0 + channel_id))
+                return -1;
+        }
+    }
+    return size;
+}
+
+int ff_rtmp_packet_write(URLContext *h, RTMPPacket *pkt,
+                         int chunk_size, RTMPPacket *prev_pkt)
+{
+    uint8_t pkt_hdr[16], *p = pkt_hdr;
+    int mode = RTMP_PS_TWELVEBYTES;
+    int off = 0;
+    int size = 0;
+    int ret;
+
+    pkt->ts_delta = pkt->timestamp - prev_pkt[pkt->channel_id].timestamp;
+
+    //if channel_id = 0, this is first presentation of prev_pkt, send full hdr.
+    if (prev_pkt[pkt->channel_id].channel_id &&
+        pkt->extra == prev_pkt[pkt->channel_id].extra) {
+        if (pkt->type == prev_pkt[pkt->channel_id].type &&
+            pkt->data_size == prev_pkt[pkt->channel_id].data_size) {
+            mode = RTMP_PS_FOURBYTES;
+            if (pkt->ts_delta == prev_pkt[pkt->channel_id].ts_delta)
+                mode = RTMP_PS_ONEBYTE;
+        } else {
+            mode = RTMP_PS_EIGHTBYTES;
+        }
+    }
+
+    if (pkt->channel_id < 64) {
+        bytestream_put_byte(&p, pkt->channel_id | (mode << 6));
+    } else if (pkt->channel_id < 64 + 256) {
+        bytestream_put_byte(&p, 0               | (mode << 6));
+        bytestream_put_byte(&p, pkt->channel_id - 64);
+    } else {
+        bytestream_put_byte(&p, 1               | (mode << 6));
+        bytestream_put_le16(&p, pkt->channel_id - 64);
+    }
+    if (mode != RTMP_PS_ONEBYTE) {
+        uint32_t timestamp = pkt->timestamp;
+        if (mode != RTMP_PS_TWELVEBYTES)
+            timestamp = pkt->ts_delta;
+        bytestream_put_be24(&p, timestamp >= 0xFFFFFF ? 0xFFFFFF : timestamp);
+        if (mode != RTMP_PS_FOURBYTES) {
+            bytestream_put_be24(&p, pkt->data_size);
+            bytestream_put_byte(&p, pkt->type);
+            if (mode == RTMP_PS_TWELVEBYTES)
+                bytestream_put_le32(&p, pkt->extra);
+        }
+        if (timestamp >= 0xFFFFFF)
+            bytestream_put_be32(&p, timestamp);
+    }
+    // save history
+    prev_pkt[pkt->channel_id].channel_id = pkt->channel_id;
+    prev_pkt[pkt->channel_id].type       = pkt->type;
+    prev_pkt[pkt->channel_id].data_size  = pkt->data_size;
+    prev_pkt[pkt->channel_id].timestamp  = pkt->timestamp;
+    if (mode != RTMP_PS_TWELVEBYTES) {
+        prev_pkt[pkt->channel_id].ts_delta   = pkt->ts_delta;
+    } else {
+        prev_pkt[pkt->channel_id].ts_delta   = pkt->timestamp;
+    }
+    prev_pkt[pkt->channel_id].extra      = pkt->extra;
+
+    if ((ret = ffurl_write(h, pkt_hdr, p - pkt_hdr)) < 0)
+        return ret;
+    size = p - pkt_hdr + pkt->data_size;
+    while (off < pkt->data_size) {
+        int towrite = FFMIN(chunk_size, pkt->data_size - off);
+        if ((ret = ffurl_write(h, pkt->data + off, towrite)) < 0)
+            return ret;
+        off += towrite;
+        if (off < pkt->data_size) {
+            uint8_t marker = 0xC0 | pkt->channel_id;
+            if ((ret = ffurl_write(h, &marker, 1)) < 0)
+                return ret;
+            size++;
+        }
+    }
+    return size;
+}
+
+int ff_rtmp_packet_create(RTMPPacket *pkt, int channel_id, RTMPPacketType type,
+                          int timestamp, int size)
+{
+    if (size) {
+        pkt->data = av_malloc(size);
+        if (!pkt->data)
+            return AVERROR(ENOMEM);
+    }
+    pkt->data_size  = size;
+    pkt->channel_id = channel_id;
+    pkt->type       = type;
+    pkt->timestamp  = timestamp;
+    pkt->extra      = 0;
+    pkt->ts_delta   = 0;
+
+    return 0;
+}
+
+void ff_rtmp_packet_destroy(RTMPPacket *pkt)
+{
+    if (!pkt)
+        return;
+    av_freep(&pkt->data);
+    pkt->data_size = 0;
+}
+
+int ff_amf_tag_size(const uint8_t *data, const uint8_t *data_end)
+{
+    const uint8_t *base = data;
+
+    if (data >= data_end)
+        return -1;
+    switch (*data++) {
+    case AMF_DATA_TYPE_NUMBER:      return 9;
+    case AMF_DATA_TYPE_BOOL:        return 2;
+    case AMF_DATA_TYPE_STRING:      return 3 + AV_RB16(data);
+    case AMF_DATA_TYPE_LONG_STRING: return 5 + AV_RB32(data);
+    case AMF_DATA_TYPE_NULL:        return 1;
+    case AMF_DATA_TYPE_ARRAY:
+        data += 4;
+    case AMF_DATA_TYPE_OBJECT:
+        for (;;) {
+            int size = bytestream_get_be16(&data);
+            int t;
+            if (!size) {
+                data++;
+                break;
+            }
+            if (size < 0 || size >= data_end - data)
+                return -1;
+            data += size;
+            t = ff_amf_tag_size(data, data_end);
+            if (t < 0 || t >= data_end - data)
+                return -1;
+            data += t;
+        }
+        return data - base;
+    case AMF_DATA_TYPE_OBJECT_END:  return 1;
+    default:                        return -1;
+    }
+}
+
+int ff_amf_get_field_value(const uint8_t *data, const uint8_t *data_end,
+                           const uint8_t *name, uint8_t *dst, int dst_size)
+{
+    int namelen = strlen(name);
+    int len;
+
+    while (*data != AMF_DATA_TYPE_OBJECT && data < data_end) {
+        len = ff_amf_tag_size(data, data_end);
+        if (len < 0)
+            len = data_end - data;
+        data += len;
+    }
+    if (data_end - data < 3)
+        return -1;
+    data++;
+    for (;;) {
+        int size = bytestream_get_be16(&data);
+        if (!size)
+            break;
+        if (size < 0 || size >= data_end - data)
+            return -1;
+        data += size;
+        if (size == namelen && !memcmp(data-size, name, namelen)) {
+            switch (*data++) {
+            case AMF_DATA_TYPE_NUMBER:
+                snprintf(dst, dst_size, "%g", av_int2double(AV_RB64(data)));
+                break;
+            case AMF_DATA_TYPE_BOOL:
+                snprintf(dst, dst_size, "%s", *data ? "true" : "false");
+                break;
+            case AMF_DATA_TYPE_STRING:
+                len = bytestream_get_be16(&data);
+                av_strlcpy(dst, data, FFMIN(len+1, dst_size));
+                break;
+            default:
+                return -1;
+            }
+            return 0;
+        }
+        len = ff_amf_tag_size(data, data_end);
+        if (len < 0 || len >= data_end - data)
+            return -1;
+        data += len;
+    }
+    return -1;
+}
+
+static const char* rtmp_packet_type(int type)
+{
+    switch (type) {
+    case RTMP_PT_CHUNK_SIZE:     return "chunk size";
+    case RTMP_PT_BYTES_READ:     return "bytes read";
+    case RTMP_PT_PING:           return "ping";
+    case RTMP_PT_SERVER_BW:      return "server bandwidth";
+    case RTMP_PT_CLIENT_BW:      return "client bandwidth";
+    case RTMP_PT_AUDIO:          return "audio packet";
+    case RTMP_PT_VIDEO:          return "video packet";
+    case RTMP_PT_FLEX_STREAM:    return "Flex shared stream";
+    case RTMP_PT_FLEX_OBJECT:    return "Flex shared object";
+    case RTMP_PT_FLEX_MESSAGE:   return "Flex shared message";
+    case RTMP_PT_NOTIFY:         return "notification";
+    case RTMP_PT_SHARED_OBJ:     return "shared object";
+    case RTMP_PT_INVOKE:         return "invoke";
+    case RTMP_PT_METADATA:       return "metadata";
+    default:                     return "unknown";
+    }
+}
+
+static void ff_amf_tag_contents(void *ctx, const uint8_t *data, const uint8_t *data_end)
+{
+    unsigned int size;
+    char buf[1024];
+
+    if (data >= data_end)
+        return;
+    switch (*data++) {
+    case AMF_DATA_TYPE_NUMBER:
+        av_log(ctx, AV_LOG_DEBUG, " number %g\n", av_int2double(AV_RB64(data)));
+        return;
+    case AMF_DATA_TYPE_BOOL:
+        av_log(ctx, AV_LOG_DEBUG, " bool %d\n", *data);
+        return;
+    case AMF_DATA_TYPE_STRING:
+    case AMF_DATA_TYPE_LONG_STRING:
+        if (data[-1] == AMF_DATA_TYPE_STRING) {
+            size = bytestream_get_be16(&data);
+        } else {
+            size = bytestream_get_be32(&data);
+        }
+        size = FFMIN(size, sizeof(buf) - 1);
+        memcpy(buf, data, size);
+        buf[size] = 0;
+        av_log(ctx, AV_LOG_DEBUG, " string '%s'\n", buf);
+        return;
+    case AMF_DATA_TYPE_NULL:
+        av_log(ctx, AV_LOG_DEBUG, " NULL\n");
+        return;
+    case AMF_DATA_TYPE_ARRAY:
+        data += 4;
+    case AMF_DATA_TYPE_OBJECT:
+        av_log(ctx, AV_LOG_DEBUG, " {\n");
+        for (;;) {
+            int t;
+            size = bytestream_get_be16(&data);
+            av_strlcpy(buf, data, FFMIN(sizeof(buf), size + 1));
+            if (!size) {
+                av_log(ctx, AV_LOG_DEBUG, " }\n");
+                data++;
+                break;
+            }
+            if (size >= data_end - data)
+                return;
+            data += size;
+            av_log(ctx, AV_LOG_DEBUG, "  %s: ", buf);
+            ff_amf_tag_contents(ctx, data, data_end);
+            t = ff_amf_tag_size(data, data_end);
+            if (t < 0 || t >= data_end - data)
+                return;
+            data += t;
+        }
+        return;
+    case AMF_DATA_TYPE_OBJECT_END:
+        av_log(ctx, AV_LOG_DEBUG, " }\n");
+        return;
+    default:
+        return;
+    }
+}
+
+void ff_rtmp_packet_dump(void *ctx, RTMPPacket *p)
+{
+    av_log(ctx, AV_LOG_DEBUG, "RTMP packet type '%s'(%d) for channel %d, timestamp %d, extra field %d size %d\n",
+           rtmp_packet_type(p->type), p->type, p->channel_id, p->timestamp, p->extra, p->data_size);
+    if (p->type == RTMP_PT_INVOKE || p->type == RTMP_PT_NOTIFY) {
+        uint8_t *src = p->data, *src_end = p->data + p->data_size;
+        while (src < src_end) {
+            int sz;
+            ff_amf_tag_contents(ctx, src, src_end);
+            sz = ff_amf_tag_size(src, src_end);
+            if (sz < 0)
+                break;
+            src += sz;
+        }
+    } else if (p->type == RTMP_PT_SERVER_BW){
+        av_log(ctx, AV_LOG_DEBUG, "Server BW = %d\n", AV_RB32(p->data));
+    } else if (p->type == RTMP_PT_CLIENT_BW){
+        av_log(ctx, AV_LOG_DEBUG, "Client BW = %d\n", AV_RB32(p->data));
+    } else if (p->type != RTMP_PT_AUDIO && p->type != RTMP_PT_VIDEO && p->type != RTMP_PT_METADATA) {
+        int i;
+        for (i = 0; i < p->data_size; i++)
+            av_log(ctx, AV_LOG_DEBUG, " %02X", p->data[i]);
+        av_log(ctx, AV_LOG_DEBUG, "\n");
+    }
+}