| /* GStreamer |
| * Copyright (C) <2005> Wim Taymans <wim.taymans@gmail.com> |
| * Copyright (C) <2008> Dejan Sakelsak <dejan.sakelsak@marand.si> |
| * Copyright (C) <2009> Janin Kolenc <janin.kolenc@marand.si> |
| * |
| * This library is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU Library 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 |
| * Library General Public License for more details. |
| * |
| * You should have received a copy of the GNU Library General Public |
| * License along with this library; if not, write to the |
| * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, |
| * Boston, MA 02110-1301, USA. |
| * |
| */ |
| |
| #ifdef HAVE_CONFIG_H |
| # include "config.h" |
| #endif |
| |
| #include <string.h> |
| #include <math.h> |
| #include <gst/rtp/gstrtpbuffer.h> |
| #include <gst/video/video.h> |
| |
| #include "gstrtph263pay.h" |
| #include "gstrtputils.h" |
| |
| typedef enum |
| { |
| GST_H263_FRAME_TYPE_I = 0, |
| GST_H263_FRAME_TYPE_P = 1, |
| GST_H263_FRAME_TYPE_PB = 2 |
| } GstRtpH263PayFrameType; |
| |
| typedef enum |
| { |
| GST_RTP_H263_PAYLOAD_PICTURE_FORMAT_RES1 = 0, |
| GST_RTP_H263_PAYLOAD_PICTURE_FORMAT_SQCIF = 1, |
| GST_RTP_H263_PAYLOAD_PICTURE_FORMAT_QCIF = 2, |
| GST_RTP_H263_PAYLOAD_PICTURE_FORMAT_CIF = 3, |
| GST_RTP_H263_PAYLOAD_PICTURE_FORMAT_4CIF = 4, |
| GST_RTP_H263_PAYLOAD_PICTURE_FORMAT_16CIF = 5, |
| GST_RTP_H263_PAYLOAD_PICTURE_FORMAT_RES2 = 6, |
| GST_H263_PAYLOAD_PICTURE_FORMAT_PLUS = 7 |
| } GstRtpH263PayPictureFormat; |
| |
| static const guint format_props[8][2] = { {254, 254}, |
| {6, 8}, |
| {9, 11}, |
| {18, 22}, |
| {18, 88}, |
| {18, 352}, |
| {254, 254}, |
| {255, 255} |
| }; |
| |
| /* |
| * I-frame MCBPC table: code, mask, nbits, cb, cr, mb type -> 10 = undefined (because we have guint) |
| */ |
| #define MCBPC_I_LEN 9 |
| #define MCBPC_I_WID 6 |
| static const guint32 mcbpc_I[9][6] = { |
| {0x8000, 0x8000, 1, 0, 0, 3}, |
| {0x2000, 0xe000, 3, 0, 1, 3}, |
| {0x4000, 0xe000, 3, 1, 0, 3}, |
| {0x6000, 0xe000, 3, 1, 1, 3}, |
| {0x1000, 0xf000, 4, 0, 0, 4}, |
| {0x0400, 0xfc00, 6, 0, 1, 4}, |
| {0x0800, 0xfc00, 6, 1, 0, 4}, |
| {0x0c00, 0xfc00, 6, 1, 1, 4}, |
| {0x0080, 0xff80, 9, 10, 10, 10} |
| }; |
| |
| /* |
| * P-frame MCBPC table: code, mask, nbits, cb, cr, mb type -> 10 = undefined (because we have guint) |
| */ |
| #define MCBPC_P_LEN 21 |
| #define MCBPC_P_WID 6 |
| static const guint16 mcbpc_P[21][6] = { |
| {0x8000, 0x8000, 1, 0, 0, 0}, |
| {0x3000, 0xf000, 4, 0, 1, 0}, |
| {0x2000, 0xf000, 4, 1, 0, 0}, |
| {0x1400, 0xfc00, 6, 1, 1, 0}, |
| {0x6000, 0xe000, 3, 0, 0, 1}, |
| {0x0e00, 0xfe00, 7, 0, 1, 1}, |
| {0x0c00, 0xfe00, 7, 1, 0, 1}, |
| {0x0280, 0xff80, 9, 1, 1, 1}, |
| {0x4000, 0xe000, 3, 0, 0, 2}, |
| {0x0a00, 0xfe00, 7, 0, 1, 2}, |
| {0x0800, 0xfe00, 7, 1, 0, 2}, |
| {0x0500, 0xff00, 8, 1, 1, 2}, |
| {0x1800, 0xf800, 5, 0, 0, 3}, |
| {0x0400, 0xff00, 8, 0, 1, 3}, |
| {0x0300, 0xff00, 8, 1, 0, 3}, |
| {0x0600, 0xfe00, 7, 1, 1, 3}, |
| {0x1000, 0xfc00, 6, 0, 0, 4}, |
| {0x0200, 0xff80, 9, 0, 1, 4}, |
| {0x0180, 0xff80, 9, 1, 0, 4}, |
| {0x0100, 0xff80, 9, 1, 1, 4}, |
| {0x0080, 0xff80, 9, 10, 10, 10} |
| }; |
| |
| /* |
| * I-frame CBPY (code, mask, nbits, Y0, Y1, Y2, Y3) |
| */ |
| #define CBPY_LEN 16 |
| #define CBPY_WID 7 |
| static const guint8 cbpy_I[16][7] = { |
| {0x30, 0xf0, 4, 0, 0, 0, 0}, |
| {0x28, 0xf8, 5, 0, 0, 0, 1}, |
| {0x20, 0xf8, 5, 0, 0, 1, 0}, |
| {0x90, 0xf0, 4, 0, 0, 1, 1}, |
| {0x18, 0xf8, 5, 0, 1, 0, 0}, |
| {0x70, 0xf0, 4, 0, 1, 0, 1}, |
| {0x08, 0xfc, 6, 0, 1, 1, 0}, |
| {0xb0, 0xf0, 4, 0, 1, 1, 1}, |
| {0x10, 0xf8, 5, 1, 0, 0, 0}, |
| {0x0c, 0xfc, 6, 1, 0, 0, 1}, |
| {0x50, 0xf0, 4, 1, 0, 1, 0}, |
| {0xa0, 0xf0, 4, 1, 0, 1, 1}, |
| {0x40, 0xf0, 4, 1, 1, 0, 0}, |
| {0x80, 0xf0, 4, 1, 1, 0, 1}, |
| {0x60, 0xf0, 4, 1, 1, 1, 0}, |
| {0xc0, 0xc0, 2, 1, 1, 1, 1} |
| }; |
| |
| /* |
| * P-frame CBPY (code, mask, nbits, Y0, Y1, Y2, Y3) |
| */ |
| static const guint8 cbpy_P[16][7] = { |
| {0x30, 0xf0, 4, 1, 1, 1, 1}, |
| {0x28, 0xf8, 5, 1, 1, 1, 0}, |
| {0x20, 0xf8, 5, 1, 1, 0, 1}, |
| {0x90, 0xf0, 4, 1, 1, 0, 0}, |
| {0x18, 0xf8, 5, 1, 0, 1, 1}, |
| {0x70, 0xf0, 4, 1, 0, 1, 0}, |
| {0x08, 0xfc, 6, 1, 0, 0, 1}, |
| {0xb0, 0xf0, 4, 1, 0, 0, 0}, |
| {0x10, 0xf8, 5, 0, 1, 1, 1}, |
| {0x0c, 0xfc, 6, 0, 1, 1, 0}, |
| {0x50, 0xf0, 4, 0, 1, 0, 1}, |
| {0xa0, 0xf0, 4, 0, 1, 0, 0}, |
| {0x40, 0xf0, 4, 0, 0, 1, 1}, |
| {0x80, 0xf0, 4, 0, 0, 1, 0}, |
| {0x60, 0xf0, 4, 0, 0, 0, 1}, |
| {0xc0, 0xc0, 2, 0, 0, 0, 0} |
| }; |
| |
| /* |
| * Block TCOEF table (code, mask, nbits, LAST, RUN, LEVEL) |
| */ |
| #define TCOEF_LEN 103 |
| #define TCOEF_WID 6 |
| static const guint16 tcoef[103][6] = { |
| {0x8000, 0xc000, 3, 0, 0, 1}, |
| {0xf000, 0xf000, 5, 0, 0, 2}, |
| {0x5400, 0xfc00, 7, 0, 0, 3}, |
| {0x2e00, 0xfe00, 8, 0, 0, 4}, |
| {0x1f00, 0xff00, 9, 0, 0, 5}, |
| {0x1280, 0xff80, 10, 0, 0, 6}, |
| {0x1200, 0xff80, 10, 0, 0, 7}, |
| {0x0840, 0xffc0, 11, 0, 0, 8}, |
| {0x0800, 0xffc0, 11, 0, 0, 9}, |
| {0x00e0, 0xffe0, 12, 0, 0, 10}, //10 |
| {0x00c0, 0xffe0, 12, 0, 0, 11}, |
| {0x0400, 0xffe0, 12, 0, 0, 12}, |
| {0xc000, 0xe000, 4, 0, 1, 1}, |
| {0x5000, 0xfc00, 7, 0, 1, 2}, |
| {0x1e00, 0xff00, 9, 0, 1, 3}, |
| {0x03c0, 0xffc0, 11, 0, 1, 4}, |
| {0x0420, 0xffe0, 12, 0, 1, 5}, |
| {0x0500, 0xfff0, 13, 0, 1, 6}, |
| {0xe000, 0xf000, 5, 0, 2, 1}, |
| {0x1d00, 0xff00, 9, 0, 2, 2}, //20 |
| {0x0380, 0xffc0, 11, 0, 2, 3}, |
| {0x0510, 0xfff0, 13, 0, 2, 4}, |
| {0x6800, 0xf800, 6, 0, 3, 1}, |
| {0x1180, 0xff80, 10, 0, 3, 2}, |
| {0x0340, 0xffc0, 11, 0, 3, 3}, |
| {0x6000, 0xf800, 6, 0, 4, 1}, |
| {0x1100, 0xff80, 10, 0, 4, 2}, |
| {0x0520, 0xfff0, 13, 0, 4, 3}, |
| {0x5800, 0xf800, 6, 0, 5, 1}, |
| {0x0300, 0xffc0, 11, 0, 5, 2}, // 30 |
| {0x0530, 0xfff0, 13, 0, 5, 3}, |
| {0x4c00, 0xfc00, 7, 0, 6, 1}, |
| {0x02c0, 0xffc0, 11, 0, 6, 2}, |
| {0x0540, 0xfff0, 13, 0, 6, 3}, |
| {0x4800, 0xfc00, 7, 0, 7, 1}, |
| {0x0280, 0xffc0, 11, 0, 7, 2}, |
| {0x4400, 0xfc00, 7, 0, 8, 1}, |
| {0x0240, 0xffc0, 11, 0, 8, 2}, |
| {0x4000, 0xfc00, 7, 0, 9, 1}, |
| {0x0200, 0xffc0, 11, 0, 9, 2}, // 40 |
| {0x2c00, 0xfe00, 8, 0, 10, 1}, |
| {0x0550, 0xfff0, 13, 0, 10, 2}, |
| {0x2a00, 0xfe00, 8, 0, 11, 1}, |
| {0x2800, 0xfe00, 8, 0, 12, 1}, |
| {0x1c00, 0xff00, 9, 0, 13, 1}, |
| {0x1b00, 0xff00, 9, 0, 14, 1}, |
| {0x1080, 0xff80, 10, 0, 15, 1}, |
| {0x1000, 0xff80, 10, 0, 16, 1}, |
| {0x0f80, 0xff80, 10, 0, 17, 1}, |
| {0x0f00, 0xff80, 10, 0, 18, 1}, // 50 |
| {0x0e80, 0xff80, 10, 0, 19, 1}, |
| {0x0e00, 0xff80, 10, 0, 20, 1}, |
| {0x0d80, 0xff80, 10, 0, 21, 1}, |
| {0x0d00, 0xff80, 10, 0, 22, 1}, |
| {0x0440, 0xffe0, 12, 0, 23, 1}, |
| {0x0460, 0xffe0, 12, 0, 24, 1}, |
| {0x0560, 0xfff0, 13, 0, 25, 1}, |
| {0x0570, 0xfff0, 13, 0, 26, 1}, |
| {0x7000, 0xf000, 5, 1, 0, 1}, |
| {0x0c80, 0xff80, 10, 1, 0, 2}, // 60 |
| {0x00a0, 0xffe0, 12, 1, 0, 3}, |
| {0x3c00, 0xfc00, 7, 1, 1, 1}, |
| {0x0080, 0xffe0, 12, 1, 1, 2}, |
| {0x3800, 0xfc00, 7, 1, 2, 1}, |
| {0x3400, 0xfc00, 7, 1, 3, 1}, |
| {0x3000, 0xfc00, 7, 1, 4, 1}, |
| {0x2600, 0xfe00, 8, 1, 5, 1}, |
| {0x2400, 0xfe00, 8, 1, 6, 1}, |
| {0x2200, 0xfe00, 8, 1, 7, 1}, |
| {0x2000, 0xfe00, 8, 1, 8, 1}, // 70 |
| {0x1a00, 0xff00, 9, 1, 9, 1}, |
| {0x1900, 0xff00, 9, 1, 10, 1}, |
| {0x1800, 0xff00, 9, 1, 11, 1}, |
| {0x1700, 0xff00, 9, 1, 12, 1}, |
| {0x1600, 0xff00, 9, 1, 13, 1}, |
| {0x1500, 0xff00, 9, 1, 14, 1}, |
| {0x1400, 0xff00, 9, 1, 15, 1}, |
| {0x1300, 0xff00, 9, 1, 16, 1}, |
| {0x0c00, 0xff80, 10, 1, 17, 1}, |
| {0x0b80, 0xff80, 10, 1, 18, 1}, // 80 |
| {0x0b00, 0xff80, 10, 1, 19, 1}, |
| {0x0a80, 0xff80, 10, 1, 20, 1}, |
| {0x0a00, 0xff80, 10, 1, 21, 1}, |
| {0x0980, 0xff80, 10, 1, 22, 1}, |
| {0x0900, 0xff80, 10, 1, 23, 1}, |
| {0x0880, 0xff80, 10, 1, 24, 1}, |
| {0x01c0, 0xffc0, 11, 1, 25, 1}, |
| {0x0180, 0xffc0, 11, 1, 26, 1}, |
| {0x0140, 0xffc0, 11, 1, 27, 1}, |
| {0x0100, 0xffc0, 11, 1, 28, 1}, // 90 |
| {0x0480, 0xffe0, 12, 1, 29, 1}, |
| {0x04a0, 0xffe0, 12, 1, 30, 1}, |
| {0x04c0, 0xffe0, 12, 1, 31, 1}, |
| {0x04e0, 0xffe0, 12, 1, 32, 1}, |
| {0x0580, 0xfff0, 13, 1, 33, 1}, |
| {0x0590, 0xfff0, 13, 1, 34, 1}, |
| {0x05a0, 0xfff0, 13, 1, 35, 1}, |
| {0x05b0, 0xfff0, 13, 1, 36, 1}, |
| {0x05c0, 0xfff0, 13, 1, 37, 1}, |
| {0x05d0, 0xfff0, 13, 1, 38, 1}, // 100 |
| {0x05e0, 0xfff0, 13, 1, 39, 1}, |
| {0x05f0, 0xfff0, 13, 1, 40, 1}, |
| {0x0600, 0xfe00, 7, 0, 0xffff, 0xffff} |
| }; |
| |
| /* |
| * Motion vector code table (Code, mask, nbits, vector (halfpixel, two's complement), diff (halfpixel, two's complement)) |
| */ |
| #define MVD_LEN 64 |
| #define MVD_WID 5 |
| static const guint16 mvd[64][5] = { |
| {0x0028, 0xfff8, 13, 0x0060, 0x0020}, |
| {0x0038, 0xfff8, 13, 0x0061, 0x0021}, |
| {0x0050, 0xfff0, 12, 0x0062, 0x0022}, |
| {0x0070, 0xfff0, 12, 0x0063, 0x0023}, |
| {0x0090, 0xfff0, 12, 0x0064, 0x0024}, |
| {0x00b0, 0xfff0, 12, 0x0065, 0x0025}, |
| {0x00d0, 0xfff0, 12, 0x0066, 0x0026}, |
| {0x00f0, 0xfff0, 12, 0x0067, 0x0027}, |
| {0x0120, 0xffe0, 11, 0x0068, 0x0028}, |
| {0x0160, 0xffe0, 11, 0x0069, 0x0029}, |
| {0x01a0, 0xffe0, 11, 0x006a, 0x002a}, |
| {0x01e0, 0xffe0, 11, 0x006b, 0x002b}, |
| {0x0220, 0xffe0, 11, 0x006c, 0x002c}, |
| {0x0260, 0xffe0, 11, 0x006d, 0x002d}, |
| {0x02a0, 0xffe0, 11, 0x006e, 0x002e}, |
| {0x02e0, 0xffe0, 11, 0x006f, 0x002f}, |
| {0x0320, 0xffe0, 11, 0x0070, 0x0030}, |
| {0x0360, 0xffe0, 11, 0x0071, 0x0031}, |
| {0x03a0, 0xffe0, 11, 0x0072, 0x0032}, |
| {0x03e0, 0xffe0, 11, 0x0073, 0x0033}, |
| {0x0420, 0xffe0, 11, 0x0074, 0x0034}, |
| {0x0460, 0xffe0, 11, 0x0075, 0x0035}, |
| {0x04c0, 0xffc0, 10, 0x0076, 0x0036}, |
| {0x0540, 0xffc0, 10, 0x0077, 0x0037}, |
| {0x05c0, 0xffc0, 10, 0x0078, 0x0038}, |
| {0x0700, 0xff00, 8, 0x0079, 0x0039}, |
| {0x0900, 0xff00, 8, 0x007a, 0x003a}, |
| {0x0b00, 0xff00, 8, 0x007b, 0x003b}, |
| {0x0e00, 0xfe00, 7, 0x007c, 0x003c}, |
| {0x1800, 0xf800, 5, 0x007d, 0x003d}, |
| {0x3000, 0xf000, 4, 0x007e, 0x003e}, |
| {0x6000, 0xe000, 3, 0x007f, 0x003f}, |
| {0x8000, 0x8000, 1, 0x0000, 0x0000}, |
| {0x4000, 0xe000, 3, 0x0001, 0x0041}, |
| {0x2000, 0xf000, 4, 0x0002, 0x0042}, |
| {0x1000, 0xf800, 5, 0x0003, 0x0043}, |
| {0x0c00, 0xfe00, 7, 0x0004, 0x0044}, |
| {0x0a00, 0xff00, 8, 0x0005, 0x0045}, |
| {0x0800, 0xff00, 8, 0x0006, 0x0046}, |
| {0x0600, 0xff00, 8, 0x0007, 0x0047}, |
| {0x0580, 0xffc0, 10, 0x0008, 0x0048}, |
| {0x0500, 0xffc0, 10, 0x0009, 0x0049}, |
| {0x0480, 0xffc0, 10, 0x000a, 0x004a}, |
| {0x0440, 0xffe0, 11, 0x000b, 0x004b}, |
| {0x0400, 0xffe0, 11, 0x000c, 0x004c}, |
| {0x03c0, 0xffe0, 11, 0x000d, 0x004d}, |
| {0x0380, 0xffe0, 11, 0x000e, 0x004e}, |
| {0x0340, 0xffe0, 11, 0x000f, 0x004f}, |
| {0x0300, 0xffe0, 11, 0x0010, 0x0050}, |
| {0x02c0, 0xffe0, 11, 0x0011, 0x0051}, |
| {0x0280, 0xffe0, 11, 0x0012, 0x0052}, |
| {0x0240, 0xffe0, 11, 0x0013, 0x0053}, |
| {0x0200, 0xffe0, 11, 0x0014, 0x0054}, |
| {0x01c0, 0xffe0, 11, 0x0015, 0x0055}, |
| {0x0180, 0xffe0, 11, 0x0016, 0x0056}, |
| {0x0140, 0xffe0, 11, 0x0017, 0x0057}, |
| {0x0100, 0xffe0, 11, 0x0018, 0x0058}, |
| {0x00e0, 0xfff0, 12, 0x0019, 0x0059}, |
| {0x00c0, 0xfff0, 12, 0x001a, 0x005a}, |
| {0x00a0, 0xfff0, 12, 0x001b, 0x005b}, |
| {0x0080, 0xfff0, 12, 0x001c, 0x005c}, |
| {0x0060, 0xfff0, 12, 0x001d, 0x005d}, |
| {0x0040, 0xfff0, 12, 0x001e, 0x005e}, |
| {0x0030, 0xfff8, 13, 0x001f, 0x005f} |
| }; |
| |
| GST_DEBUG_CATEGORY_STATIC (rtph263pay_debug); |
| #define GST_CAT_DEFAULT (rtph263pay_debug) |
| |
| #define GST_RTP_HEADER_LEN 12 |
| |
| enum |
| { |
| PROP_0, |
| PROP_MODE_A_ONLY |
| }; |
| |
| static GstStaticPadTemplate gst_rtp_h263_pay_sink_template = |
| GST_STATIC_PAD_TEMPLATE ("sink", |
| GST_PAD_SINK, |
| GST_PAD_ALWAYS, |
| GST_STATIC_CAPS ("video/x-h263, " |
| "variant = (string) \"itu\", " "h263version = (string) \"h263\"") |
| ); |
| |
| static GstStaticPadTemplate gst_rtp_h263_pay_src_template = |
| GST_STATIC_PAD_TEMPLATE ("src", |
| GST_PAD_SRC, |
| GST_PAD_ALWAYS, |
| GST_STATIC_CAPS ("application/x-rtp, " |
| "media = (string) \"video\", " |
| "payload = (int) " GST_RTP_PAYLOAD_H263_STRING ", " |
| "clock-rate = (int) 90000, " "encoding-name = (string) \"H263\"; " |
| "application/x-rtp, " |
| "media = (string) \"video\", " |
| "payload = (int) " GST_RTP_PAYLOAD_DYNAMIC_STRING ", " |
| "clock-rate = (int) 90000, " "encoding-name = (string) \"H263\"") |
| ); |
| |
| static void gst_rtp_h263_pay_finalize (GObject * object); |
| |
| static gboolean gst_rtp_h263_pay_setcaps (GstRTPBasePayload * payload, |
| GstCaps * caps); |
| static void gst_rtp_h263_pay_set_property (GObject * object, guint prop_id, |
| const GValue * value, GParamSpec * pspec); |
| static void gst_rtp_h263_pay_get_property (GObject * object, guint prop_id, |
| GValue * value, GParamSpec * pspec); |
| static GstFlowReturn gst_rtp_h263_pay_handle_buffer (GstRTPBasePayload * |
| payload, GstBuffer * buffer); |
| |
| static void gst_rtp_h263_pay_boundry_init (GstRtpH263PayBoundry * boundry, |
| guint8 * start, guint8 * end, guint8 sbit, guint8 ebit); |
| static GstRtpH263PayGob *gst_rtp_h263_pay_gob_new (GstRtpH263PayBoundry * |
| boundry, guint gobn); |
| static GstRtpH263PayMB *gst_rtp_h263_pay_mb_new (GstRtpH263PayBoundry * boundry, |
| guint mba); |
| static GstRtpH263PayPackage *gst_rtp_h263_pay_package_new_empty (); |
| static GstRtpH263PayPackage *gst_rtp_h263_pay_package_new (guint8 * start, |
| guint8 * end, guint length, guint8 sbit, guint8 ebit, GstBuffer * outbuf, |
| gboolean marker); |
| |
| static void gst_rtp_h263_pay_mb_destroy (GstRtpH263PayMB * mb); |
| static void gst_rtp_h263_pay_gob_destroy (GstRtpH263PayGob * gob, guint ind); |
| static void gst_rtp_h263_pay_context_destroy (GstRtpH263PayContext * context, |
| guint ind); |
| static void gst_rtp_h263_pay_package_destroy (GstRtpH263PayPackage * pack); |
| |
| #define gst_rtp_h263_pay_parent_class parent_class |
| G_DEFINE_TYPE (GstRtpH263Pay, gst_rtp_h263_pay, GST_TYPE_RTP_BASE_PAYLOAD); |
| |
| static void |
| gst_rtp_h263_pay_class_init (GstRtpH263PayClass * klass) |
| { |
| GObjectClass *gobject_class; |
| GstElementClass *gstelement_class; |
| GstRTPBasePayloadClass *gstrtpbasepayload_class; |
| |
| gobject_class = (GObjectClass *) klass; |
| gstelement_class = (GstElementClass *) klass; |
| gstrtpbasepayload_class = (GstRTPBasePayloadClass *) klass; |
| |
| gobject_class->finalize = gst_rtp_h263_pay_finalize; |
| |
| gstrtpbasepayload_class->set_caps = gst_rtp_h263_pay_setcaps; |
| gstrtpbasepayload_class->handle_buffer = gst_rtp_h263_pay_handle_buffer; |
| gobject_class->set_property = gst_rtp_h263_pay_set_property; |
| gobject_class->get_property = gst_rtp_h263_pay_get_property; |
| |
| g_object_class_install_property (G_OBJECT_CLASS (klass), |
| PROP_MODE_A_ONLY, g_param_spec_boolean ("modea-only", |
| "Fragment packets in mode A Only", |
| "Disable packetization modes B and C", DEFAULT_MODE_A, |
| G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)); |
| |
| gst_element_class_add_static_pad_template (gstelement_class, |
| &gst_rtp_h263_pay_src_template); |
| gst_element_class_add_static_pad_template (gstelement_class, |
| &gst_rtp_h263_pay_sink_template); |
| |
| gst_element_class_set_static_metadata (gstelement_class, |
| "RTP H263 packet payloader", "Codec/Payloader/Network/RTP", |
| "Payload-encodes H263 video in RTP packets (RFC 2190)", |
| "Neil Stratford <neils@vipadia.com>" |
| "Dejan Sakelsak <dejan.sakelsak@marand.si>"); |
| |
| GST_DEBUG_CATEGORY_INIT (rtph263pay_debug, "rtph263pay", 0, |
| "H263 RTP Payloader"); |
| } |
| |
| static void |
| gst_rtp_h263_pay_init (GstRtpH263Pay * rtph263pay) |
| { |
| GST_RTP_BASE_PAYLOAD_PT (rtph263pay) = GST_RTP_PAYLOAD_H263; |
| rtph263pay->prop_payload_mode = DEFAULT_MODE_A; |
| } |
| |
| static void |
| gst_rtp_h263_pay_finalize (GObject * object) |
| { |
| GstRtpH263Pay *rtph263pay; |
| |
| rtph263pay = GST_RTP_H263_PAY (object); |
| |
| gst_buffer_replace (&rtph263pay->current_buffer, NULL); |
| |
| G_OBJECT_CLASS (parent_class)->finalize (object); |
| } |
| |
| static gboolean |
| gst_rtp_h263_pay_setcaps (GstRTPBasePayload * payload, GstCaps * caps) |
| { |
| GstStructure *s = gst_caps_get_structure (caps, 0); |
| gint width, height; |
| gchar *framesize = NULL; |
| gboolean res; |
| |
| if (gst_structure_has_field (s, "width") && |
| gst_structure_has_field (s, "height")) { |
| if (!gst_structure_get_int (s, "width", &width) || width <= 0) { |
| goto invalid_dimension; |
| } |
| |
| if (!gst_structure_get_int (s, "height", &height) || height <= 0) { |
| goto invalid_dimension; |
| } |
| |
| framesize = g_strdup_printf ("%d-%d", width, height); |
| } |
| |
| gst_rtp_base_payload_set_options (payload, "video", |
| payload->pt != GST_RTP_PAYLOAD_H263, "H263", 90000); |
| |
| if (framesize != NULL) { |
| res = gst_rtp_base_payload_set_outcaps (payload, |
| "a-framesize", G_TYPE_STRING, framesize, NULL); |
| } else { |
| res = gst_rtp_base_payload_set_outcaps (payload, NULL); |
| } |
| g_free (framesize); |
| |
| return res; |
| |
| /* ERRORS */ |
| invalid_dimension: |
| { |
| GST_ERROR_OBJECT (payload, "Invalid width/height from caps"); |
| return FALSE; |
| } |
| } |
| |
| static void |
| gst_rtp_h263_pay_context_destroy (GstRtpH263PayContext * context, guint ind) |
| { |
| if (!context) |
| return; |
| |
| if (context->gobs) { |
| guint i; |
| |
| for (i = 0; i < format_props[ind][0]; i++) { |
| if (context->gobs[i]) { |
| gst_rtp_h263_pay_gob_destroy (context->gobs[i], ind); |
| } |
| } |
| |
| g_free (context->gobs); |
| } |
| |
| g_free (context); |
| } |
| |
| static void |
| gst_rtp_h263_pay_set_property (GObject * object, guint prop_id, |
| const GValue * value, GParamSpec * pspec) |
| { |
| GstRtpH263Pay *rtph263pay; |
| |
| rtph263pay = GST_RTP_H263_PAY (object); |
| |
| switch (prop_id) { |
| case PROP_MODE_A_ONLY: |
| rtph263pay->prop_payload_mode = g_value_get_boolean (value); |
| break; |
| default: |
| G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); |
| break; |
| } |
| } |
| |
| static void |
| gst_rtp_h263_pay_get_property (GObject * object, guint prop_id, |
| GValue * value, GParamSpec * pspec) |
| { |
| GstRtpH263Pay *rtph263pay; |
| |
| rtph263pay = GST_RTP_H263_PAY (object); |
| |
| switch (prop_id) { |
| case PROP_MODE_A_ONLY: |
| g_value_set_boolean (value, rtph263pay->prop_payload_mode); |
| break; |
| default: |
| G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); |
| break; |
| } |
| } |
| |
| static GstRtpH263PayPackage * |
| gst_rtp_h263_pay_package_new_empty (void) |
| { |
| return (GstRtpH263PayPackage *) g_malloc0 (sizeof (GstRtpH263PayPackage)); |
| } |
| |
| static GstRtpH263PayPackage * |
| gst_rtp_h263_pay_package_new (guint8 * start, guint8 * end, guint length, |
| guint8 sbit, guint8 ebit, GstBuffer * outbuf, gboolean marker) |
| { |
| |
| GstRtpH263PayPackage *package; |
| |
| package = gst_rtp_h263_pay_package_new_empty (); |
| |
| package->payload_start = start; |
| package->payload_end = end; |
| package->payload_len = length; |
| package->sbit = sbit; |
| package->ebit = ebit; |
| package->outbuf = outbuf; |
| package->marker = marker; |
| |
| return package; |
| } |
| |
| static void |
| gst_rtp_h263_pay_package_destroy (GstRtpH263PayPackage * pack) |
| { |
| if (pack) |
| g_free (pack); |
| } |
| |
| static void |
| gst_rtp_h263_pay_boundry_init (GstRtpH263PayBoundry * boundry, |
| guint8 * start, guint8 * end, guint8 sbit, guint8 ebit) |
| { |
| boundry->start = start; |
| boundry->end = end; |
| boundry->sbit = sbit; |
| boundry->ebit = ebit; |
| } |
| |
| static void |
| gst_rtp_h263_pay_splat_header_A (guint8 * header, |
| GstRtpH263PayPackage * package, GstRtpH263PayPic * piclayer) |
| { |
| |
| GstRtpH263PayAHeader *a_header; |
| |
| a_header = (GstRtpH263PayAHeader *) header; |
| |
| a_header->f = 0; |
| a_header->p = 0; |
| a_header->sbit = package->sbit; |
| a_header->ebit = package->ebit; |
| a_header->src = GST_H263_PICTURELAYER_PLSRC (piclayer); |
| a_header->i = GST_H263_PICTURELAYER_PLTYPE (piclayer); |
| a_header->u = GST_H263_PICTURELAYER_PLUMV (piclayer); |
| a_header->s = GST_H263_PICTURELAYER_PLSAC (piclayer); |
| a_header->a = GST_H263_PICTURELAYER_PLAP (piclayer); |
| a_header->r1 = 0; |
| a_header->r2 = 0; |
| a_header->dbq = 0; |
| a_header->trb = 0; |
| a_header->tr = 0; |
| |
| } |
| |
| static void |
| gst_rtp_h263_pay_splat_header_B (guint8 * header, |
| GstRtpH263PayPackage * package, GstRtpH263PayPic * piclayer) |
| { |
| |
| GstRtpH263PayBHeader *b_header; |
| |
| b_header = (GstRtpH263PayBHeader *) header; |
| |
| b_header->f = 1; |
| b_header->p = 0; |
| b_header->sbit = package->sbit; |
| b_header->ebit = package->ebit; |
| b_header->src = GST_H263_PICTURELAYER_PLSRC (piclayer); |
| b_header->quant = package->quant; |
| b_header->gobn = package->gobn; |
| b_header->mba1 = package->mba >> 6; |
| b_header->mba2 = package->mba & 0x003f; |
| b_header->r = 0; |
| b_header->i = GST_H263_PICTURELAYER_PLTYPE (piclayer); |
| b_header->u = GST_H263_PICTURELAYER_PLUMV (piclayer); |
| b_header->s = GST_H263_PICTURELAYER_PLSAC (piclayer); |
| b_header->a = GST_H263_PICTURELAYER_PLAP (piclayer); |
| |
| b_header->hmv11 = 0; |
| b_header->hmv12 = 0; |
| b_header->vmv11 = 0; |
| b_header->vmv12 = 0; |
| b_header->hmv21 = 0; |
| b_header->hmv22 = 0; |
| b_header->vmv21 = 0; |
| |
| if (package->nmvd > 0) { |
| //mvd[0] |
| b_header->hmv11 = (package->mvd[0] & 0x7f) >> 3; |
| b_header->hmv12 = (package->mvd[0] & 0x07); |
| //mvd[1] |
| b_header->vmv11 = (package->mvd[1] & 0x07f) >> 2; |
| b_header->vmv12 = (package->mvd[1] & 0x03); |
| |
| if (package->nmvd == 8) { |
| //mvd[4] |
| b_header->hmv21 = (package->mvd[4] & 0x7f) >> 1; |
| b_header->hmv22 = (package->mvd[4] & 0x01); |
| //mvd[5] |
| b_header->vmv21 = (package->mvd[5] & 0x7f); |
| } |
| } |
| |
| } |
| |
| static gboolean |
| gst_rtp_h263_pay_gobfinder (GstRtpH263Pay * rtph263pay, |
| GstRtpH263PayBoundry * boundry) |
| { |
| guint8 *current; |
| guint range; |
| guint i; |
| |
| current = boundry->end + 1; |
| range = (rtph263pay->data - current) + rtph263pay->available_data; |
| |
| |
| GST_DEBUG ("Searching for next GOB, data:%p, len:%u, payload_len:%p," |
| " current:%p, range:%u", rtph263pay->data, rtph263pay->available_data, |
| boundry->end + 1, current, range); |
| |
| /* If we are past the end, stop */ |
| if (current >= rtph263pay->data + rtph263pay->available_data) |
| return FALSE; |
| |
| for (i = 3; i < range - 3; i++) { |
| if ((current[i] == 0x0) && |
| (current[i + 1] == 0x0) && (current[i + 2] >> 7 == 0x1)) { |
| GST_LOG ("GOB end found at: %p start: %p len: %u", current + i - 1, |
| boundry->end + 1, (guint) (current + i - boundry->end + 2)); |
| gst_rtp_h263_pay_boundry_init (boundry, boundry->end + 1, |
| current + i - 1, 0, 0); |
| |
| return TRUE; |
| } |
| } |
| |
| GST_DEBUG ("Couldn't find any new GBSC in this frame, range:%u", range); |
| |
| gst_rtp_h263_pay_boundry_init (boundry, boundry->end + 1, |
| (guint8 *) (rtph263pay->data + rtph263pay->available_data - 1), 0, 0); |
| |
| return TRUE; |
| } |
| |
| static GstRtpH263PayGob * |
| gst_rtp_h263_pay_gob_new (GstRtpH263PayBoundry * boundry, guint gobn) |
| { |
| GstRtpH263PayGob *gob; |
| |
| gob = (GstRtpH263PayGob *) g_malloc0 (sizeof (GstRtpH263PayGob)); |
| |
| gob->start = boundry->start; |
| gob->end = boundry->end; |
| gob->length = boundry->end - boundry->start + 1; |
| gob->ebit = boundry->ebit; |
| gob->sbit = boundry->sbit; |
| gob->gobn = gobn; |
| gob->quant = 0; |
| gob->macroblocks = NULL; |
| gob->nmacroblocs = 0; |
| |
| return gob; |
| } |
| |
| static void |
| gst_rtp_h263_pay_gob_destroy (GstRtpH263PayGob * gob, guint ind) |
| { |
| |
| if (!gob) |
| return; |
| |
| if (gob->macroblocks) { |
| |
| guint i; |
| |
| for (i = 0; i < gob->nmacroblocs; i++) { |
| gst_rtp_h263_pay_mb_destroy (gob->macroblocks[i]); |
| } |
| |
| g_free (gob->macroblocks); |
| } |
| |
| g_free (gob); |
| } |
| |
| /* |
| * decode MCBPC for I frames and return index in table or -1 if not found |
| */ |
| static gint |
| gst_rtp_h263_pay_decode_mcbpc_I (guint32 value) |
| { |
| |
| gint i; |
| guint16 code; |
| |
| code = value >> 16; |
| |
| GST_LOG ("value:0x%08x, code:0x%04x", value, code); |
| |
| for (i = 0; i < MCBPC_I_LEN; i++) { |
| if ((code & mcbpc_I[i][1]) == mcbpc_I[i][0]) { |
| return i; |
| } |
| } |
| |
| GST_WARNING ("Couldn't find code, returning -1"); |
| |
| return -1; |
| } |
| |
| /* |
| * decode MCBPC for P frames and return index in table or -1 if not found |
| */ |
| static gint |
| gst_rtp_h263_pay_decode_mcbpc_P (guint32 value) |
| { |
| |
| gint i; |
| guint16 code; |
| |
| code = value >> 16; |
| |
| GST_LOG ("value:0x%08x, code:0x%04x", value, code); |
| |
| for (i = 0; i < MCBPC_P_LEN; i++) { |
| if ((code & mcbpc_P[i][1]) == mcbpc_P[i][0]) { |
| return i; |
| } |
| } |
| |
| GST_WARNING ("Couldn't find code, returning -1"); |
| |
| return -1; |
| } |
| |
| /* |
| * decode CBPY and return index in table or -1 if not found |
| */ |
| static gint |
| gst_rtp_h263_pay_decode_cbpy (guint32 value, const guint8 cbpy_table[16][7]) |
| { |
| |
| gint i; |
| guint8 code; |
| |
| code = value >> 24; |
| |
| GST_LOG ("value:0x%08x, code:0x%04x", value, code); |
| |
| for (i = 0; i < CBPY_LEN; i++) { |
| if ((code & cbpy_table[i][1]) == cbpy_table[i][0]) { |
| return i; |
| } |
| } |
| |
| GST_WARNING ("Couldn't find code, returning -1"); |
| |
| return -1; |
| } |
| |
| /* |
| * decode MVD and return index in table or -1 if not found |
| */ |
| static gint |
| gst_rtp_h263_pay_decode_mvd (guint32 value) |
| { |
| |
| gint i; |
| guint16 code; |
| |
| code = value >> 16; |
| |
| GST_LOG ("value:0x%08x, code:0x%04x", value, code); |
| |
| for (i = 0; i < MVD_LEN; i++) { |
| if ((code & mvd[i][1]) == mvd[i][0]) { |
| return i; |
| } |
| } |
| |
| GST_WARNING ("Couldn't find code, returning -1"); |
| |
| return -1; |
| } |
| |
| /* |
| * decode TCOEF and return index in table or -1 if not found |
| */ |
| static gint |
| gst_rtp_h263_pay_decode_tcoef (guint32 value) |
| { |
| |
| gint i; |
| guint16 code; |
| |
| code = value >> 16; |
| |
| GST_LOG ("value:0x%08x, code:0x%04x", value, code); |
| |
| for (i = 0; i < TCOEF_LEN; i++) { |
| if ((code & tcoef[i][1]) == tcoef[i][0]) { |
| GST_LOG ("tcoef is %d", i); |
| return i; |
| } |
| } |
| |
| GST_WARNING ("Couldn't find code, returning -1"); |
| |
| return -1; |
| } |
| |
| /* |
| * the 32-bit register is like a window that we move right for "move_bits" to get the next v "data" h263 field |
| * "rest_bits" tells how many bits in the "data" byte address are still not used |
| */ |
| |
| static gint |
| gst_rtp_h263_pay_move_window_right (GstRtpH263PayContext * context, guint n, |
| guint rest_bits, guint8 ** orig_data, guint8 ** data_end) |
| { |
| |
| GST_LOG |
| ("Moving window: 0x%08x from: %p for %d bits, rest_bits: %d, data_end %p", |
| context->window, context->win_end, n, rest_bits, *data_end); |
| |
| if (n == 0) |
| return rest_bits; |
| |
| while (n != 0 || context->win_end == ((*data_end) + 1)) { |
| guint8 b = context->win_end <= *data_end ? *context->win_end : 0; |
| if (rest_bits == 0) { |
| if (n > 8) { |
| context->window = (context->window << 8) | b; |
| n -= 8; |
| } else { |
| context->window = (context->window << n) | (b >> (8 - n)); |
| rest_bits = 8 - n; |
| if (rest_bits == 0) |
| context->win_end++; |
| break; |
| } |
| } else { |
| if (n > rest_bits) { |
| context->window = (context->window << rest_bits) | |
| (b & (((guint) pow (2.0, (double) rest_bits)) - 1)); |
| n -= rest_bits; |
| rest_bits = 0; |
| } else { |
| context->window = (context->window << n) | |
| ((b & (((guint) pow (2.0, (double) rest_bits)) - 1)) >> |
| (rest_bits - n)); |
| rest_bits -= n; |
| if (rest_bits == 0) |
| context->win_end++; |
| break; |
| } |
| } |
| |
| context->win_end++; |
| } |
| |
| *orig_data = context->win_end - 4; |
| |
| GST_LOG |
| ("Window moved to %p with value: 0x%08x and orig_data: %p rest_bits: %d", |
| context->win_end, context->window, *orig_data, rest_bits); |
| return rest_bits; |
| } |
| |
| /* |
| * Find the start of the next MB (end of the current MB) |
| * returns the number of excess bits and stores the end of the MB in end |
| * data must be placed on first MB byte |
| */ |
| static GstRtpH263PayMB * |
| gst_rtp_h263_pay_B_mbfinder (GstRtpH263PayContext * context, |
| GstRtpH263PayGob * gob, GstRtpH263PayMB * macroblock, guint mba) |
| { |
| guint mb_type_index; |
| guint cbpy_type_index; |
| guint tcoef_type_index; |
| GstRtpH263PayMB *mac; |
| GstRtpH263PayBoundry boundry; |
| |
| gst_rtp_h263_pay_boundry_init (&boundry, macroblock->end, |
| macroblock->end, 8 - macroblock->ebit, macroblock->ebit); |
| mac = gst_rtp_h263_pay_mb_new (&boundry, mba); |
| |
| if (mac->sbit == 8) { |
| mac->start++; |
| // mac->end++; |
| mac->sbit = 0; |
| } |
| |
| GST_LOG ("current_pos:%p, end:%p, rest_bits:%d, window:%x", |
| mac->start, mac->end, macroblock->ebit, context->window); |
| |
| GST_LOG ("Current pos after COD: %p", mac->end); |
| |
| if (context->piclayer->ptype_pictype == 0) { |
| //We have an I frame |
| gint i; |
| guint last; |
| guint ind; |
| |
| //Step 2 decode MCBPC I |
| mb_type_index = gst_rtp_h263_pay_decode_mcbpc_I (context->window); |
| |
| GST_LOG ("MCBPC index: %d", mb_type_index); |
| if (mb_type_index == -1) { |
| GST_ERROR ("MB index shouldn't be -1 in window: %08x", context->window); |
| goto beach; |
| } |
| |
| mac->ebit = |
| gst_rtp_h263_pay_move_window_right (context, mcbpc_I[mb_type_index][2], |
| mac->ebit, &mac->end, &gob->end); |
| |
| mac->mb_type = mcbpc_I[mb_type_index][5]; |
| |
| if (mb_type_index == 8) { |
| GST_LOG ("Stuffing skipping rest of MB header"); |
| return mac; |
| } |
| //Step 3 decode CBPY I |
| cbpy_type_index = gst_rtp_h263_pay_decode_cbpy (context->window, cbpy_I); |
| |
| GST_LOG ("CBPY index: %d", cbpy_type_index); |
| if (cbpy_type_index == -1) { |
| GST_ERROR ("CBPY index shouldn't be -1 in window: %08x", context->window); |
| goto beach; |
| } |
| |
| mac->ebit = |
| gst_rtp_h263_pay_move_window_right (context, cbpy_I[cbpy_type_index][2], |
| mac->ebit, &mac->end, &gob->end); |
| |
| //Step 4 decode rest of MB |
| //MB type 1 and 4 have DQUANT - we store it for packaging purposes |
| if (mcbpc_I[mb_type_index][5] == 4) { |
| GST_LOG ("Shifting DQUANT"); |
| |
| mac->quant = (context->window >> 30); |
| |
| mac->ebit = |
| gst_rtp_h263_pay_move_window_right (context, 2, mac->ebit, &mac->end, |
| &gob->end); |
| } |
| //Step 5 go trough the blocks - decode DC and TCOEF |
| last = 0; |
| for (i = 0; i < N_BLOCKS; i++) { |
| |
| GST_LOG ("Decoding INTRADC and TCOEF, i:%d", i); |
| mac->ebit = |
| gst_rtp_h263_pay_move_window_right (context, 8, mac->ebit, &mac->end, |
| &gob->end); |
| |
| if (i > 3) { |
| ind = mcbpc_I[mb_type_index][i - 1]; |
| } else { |
| ind = cbpy_I[cbpy_type_index][i + 3]; |
| } |
| |
| if (ind == 1) { |
| while (last == 0) { |
| tcoef_type_index = gst_rtp_h263_pay_decode_tcoef (context->window); |
| |
| GST_LOG ("TCOEF index: %d", tcoef_type_index); |
| if (tcoef_type_index == -1) { |
| GST_ERROR ("TCOEF index shouldn't be -1 in window: %08x", |
| context->window); |
| goto beach; |
| } |
| mac->ebit = |
| gst_rtp_h263_pay_move_window_right (context, |
| tcoef[tcoef_type_index][2], mac->ebit, &mac->end, &gob->end); |
| |
| last = tcoef[tcoef_type_index][3]; |
| if (tcoef_type_index == 102) { |
| if ((context->window & 0x80000000) == 0x80000000) |
| last = 1; |
| else |
| last = 0; |
| |
| mac->ebit = |
| gst_rtp_h263_pay_move_window_right (context, 15, |
| mac->ebit, &mac->end, &gob->end); |
| } |
| } |
| last = 0; |
| } |
| } |
| |
| } else { |
| //We have a P frame |
| guint i; |
| guint last; |
| guint ind; |
| |
| //Step 1 check COD |
| GST_LOG ("Checking for COD"); |
| if ((context->window & 0x80000000) == 0x80000000) { |
| //The MB is not coded |
| mac->ebit = |
| gst_rtp_h263_pay_move_window_right (context, 1, mac->ebit, &mac->end, |
| &gob->end); |
| GST_LOG ("COOOOOOOOOOOD = 1"); |
| |
| return mac; |
| } else { |
| //The MB is coded |
| mac->ebit = |
| gst_rtp_h263_pay_move_window_right (context, 1, mac->ebit, &mac->end, |
| &gob->end); |
| } |
| |
| //Step 2 decode MCBPC P |
| mb_type_index = gst_rtp_h263_pay_decode_mcbpc_P (context->window); |
| |
| GST_LOG ("MCBPC index: %d", mb_type_index); |
| if (mb_type_index == -1) { |
| GST_ERROR ("MB index shouldn't be -1 in window: %08x", context->window); |
| goto beach; |
| } |
| mac->ebit = |
| gst_rtp_h263_pay_move_window_right (context, mcbpc_P[mb_type_index][2], |
| mac->ebit, &mac->end, &gob->end); |
| |
| mac->mb_type = mcbpc_P[mb_type_index][5]; |
| |
| if (mb_type_index == 20) { |
| GST_LOG ("Stuffing skipping rest of MB header"); |
| return mac; |
| } |
| //Step 3 decode CBPY P |
| cbpy_type_index = gst_rtp_h263_pay_decode_cbpy (context->window, cbpy_P); |
| |
| GST_LOG ("CBPY index: %d", cbpy_type_index); |
| if (cbpy_type_index == -1) { |
| GST_ERROR ("CBPY index shouldn't be -1 in window: %08x", context->window); |
| goto beach; |
| } |
| mac->ebit = |
| gst_rtp_h263_pay_move_window_right (context, cbpy_P[cbpy_type_index][2], |
| mac->ebit, &mac->end, &gob->end); |
| |
| //MB type 1 and 4 have DQUANT - we add it to MB object and jump over |
| if (mcbpc_P[mb_type_index][5] == 4 || mcbpc_P[mb_type_index][5] == 1) { |
| GST_LOG ("Shifting DQUANT"); |
| |
| mac->quant = context->window >> 30; |
| |
| mac->ebit = |
| gst_rtp_h263_pay_move_window_right (context, 2, mac->ebit, &mac->end, |
| &gob->end); |
| } |
| //MB types < 3 have MVD1-4 |
| if (mcbpc_P[mb_type_index][5] < 3) { |
| |
| guint nmvd; |
| gint j; |
| |
| nmvd = 2; |
| if (mcbpc_P[mb_type_index][5] == 2) |
| nmvd = 8; |
| |
| for (j = 0; j < nmvd; j++) { |
| guint mvd_type; |
| |
| mvd_type = gst_rtp_h263_pay_decode_mvd (context->window); |
| |
| if (mvd_type == -1) { |
| GST_ERROR ("MVD1-4 index shouldn't be -1 in window: %08x", |
| context->window); |
| goto beach; |
| } |
| //set the MB mvd values |
| mac->mvd[j] = mvd[mvd_type][3]; |
| |
| mac->ebit = |
| gst_rtp_h263_pay_move_window_right (context, mvd[mvd_type][2], |
| mac->ebit, &mac->end, &gob->end); |
| } |
| |
| |
| } |
| //Step 5 go trough the blocks - decode DC and TCOEF |
| last = 0; |
| for (i = 0; i < N_BLOCKS; i++) { |
| |
| //if MB type 3 or 4 then INTRADC coef are present in blocks |
| if (mcbpc_P[mb_type_index][5] > 2) { |
| GST_LOG ("INTRADC coef: %d", i); |
| mac->ebit = |
| gst_rtp_h263_pay_move_window_right (context, 8, mac->ebit, |
| &mac->end, &gob->end); |
| } else { |
| GST_LOG ("INTRADC coef is not present"); |
| } |
| |
| //check if the block has TCOEF |
| if (i > 3) { |
| ind = mcbpc_P[mb_type_index][i - 1]; |
| } else { |
| if (mcbpc_P[mb_type_index][5] > 2) { |
| ind = cbpy_I[cbpy_type_index][i + 3]; |
| } else { |
| ind = cbpy_P[cbpy_type_index][i + 3]; |
| } |
| } |
| |
| if (ind == 1) { |
| while (last == 0) { |
| tcoef_type_index = gst_rtp_h263_pay_decode_tcoef (context->window); |
| |
| GST_LOG ("TCOEF index: %d", tcoef_type_index); |
| if (tcoef_type_index == -1) { |
| GST_ERROR ("TCOEF index shouldn't be -1 in window: %08x", |
| context->window); |
| goto beach; |
| } |
| |
| mac->ebit = |
| gst_rtp_h263_pay_move_window_right (context, |
| tcoef[tcoef_type_index][2], mac->ebit, &mac->end, &gob->end); |
| |
| last = tcoef[tcoef_type_index][3]; |
| if (tcoef_type_index == 102) { |
| if ((context->window & 0x80000000) == 0x80000000) |
| last = 1; |
| else |
| last = 0; |
| |
| mac->ebit = |
| gst_rtp_h263_pay_move_window_right (context, 15, |
| mac->ebit, &mac->end, &gob->end); |
| } |
| } |
| last = 0; |
| } |
| } |
| } |
| |
| mac->length = mac->end - mac->start + 1; |
| |
| return mac; |
| |
| beach: |
| return NULL; |
| } |
| |
| static GstRtpH263PayMB * |
| gst_rtp_h263_pay_mb_new (GstRtpH263PayBoundry * boundry, guint mba) |
| { |
| GstRtpH263PayMB *mb; |
| gint i; |
| |
| mb = (GstRtpH263PayMB *) g_malloc0 (sizeof (GstRtpH263PayMB)); |
| |
| mb->start = boundry->start; |
| mb->end = boundry->end; |
| mb->length = boundry->end - boundry->start + 1; |
| mb->sbit = boundry->sbit; |
| mb->ebit = boundry->ebit; |
| mb->mba = mba; |
| |
| for (i = 0; i < 5; i++) |
| mb->mvd[i] = 0; |
| |
| return mb; |
| } |
| |
| static void |
| gst_rtp_h263_pay_mb_destroy (GstRtpH263PayMB * mb) |
| { |
| if (!mb) |
| return; |
| |
| g_free (mb); |
| } |
| |
| static GstFlowReturn |
| gst_rtp_h263_pay_push (GstRtpH263Pay * rtph263pay, |
| GstRtpH263PayContext * context, GstRtpH263PayPackage * package) |
| { |
| |
| /* |
| * Splat the payload header values |
| */ |
| guint8 *header; |
| GstFlowReturn ret; |
| GstRTPBuffer rtp = { NULL }; |
| |
| gst_rtp_buffer_map (package->outbuf, GST_MAP_WRITE, &rtp); |
| |
| header = gst_rtp_buffer_get_payload (&rtp); |
| |
| switch (package->mode) { |
| case GST_RTP_H263_PAYLOAD_HEADER_MODE_A: |
| GST_LOG ("Pushing A packet"); |
| gst_rtp_h263_pay_splat_header_A (header, package, context->piclayer); |
| break; |
| case GST_RTP_H263_PAYLOAD_HEADER_MODE_B: |
| GST_LOG ("Pushing B packet"); |
| gst_rtp_h263_pay_splat_header_B (header, package, context->piclayer); |
| break; |
| case GST_RTP_H263_PAYLOAD_HEADER_MODE_C: |
| //gst_rtp_h263_pay_splat_header_C(header, package, context->piclayer); |
| //break; |
| default: |
| return GST_FLOW_ERROR; |
| } |
| |
| /* |
| * timestamp the buffer |
| */ |
| GST_BUFFER_PTS (package->outbuf) = rtph263pay->first_ts; |
| |
| gst_rtp_buffer_set_marker (&rtp, package->marker); |
| if (package->marker) |
| GST_DEBUG ("Marker set!"); |
| |
| gst_rtp_buffer_unmap (&rtp); |
| |
| /* |
| * Copy the payload data in the buffer |
| */ |
| GST_DEBUG ("Copying memory"); |
| gst_buffer_copy_into (package->outbuf, rtph263pay->current_buffer, |
| GST_BUFFER_COPY_MEMORY, package->payload_start - rtph263pay->map.data, |
| package->payload_len); |
| gst_rtp_copy_meta (GST_ELEMENT_CAST (rtph263pay), package->outbuf, |
| rtph263pay->current_buffer, |
| g_quark_from_static_string (GST_META_TAG_VIDEO_STR)); |
| |
| ret = |
| gst_rtp_base_payload_push (GST_RTP_BASE_PAYLOAD (rtph263pay), |
| package->outbuf); |
| GST_DEBUG ("Package pushed, returning"); |
| |
| gst_rtp_h263_pay_package_destroy (package); |
| |
| return ret; |
| } |
| |
| static GstFlowReturn |
| gst_rtp_h263_pay_A_fragment_push (GstRtpH263Pay * rtph263pay, |
| GstRtpH263PayContext * context, guint first, guint last) |
| { |
| |
| GstRtpH263PayPackage *pack; |
| |
| pack = gst_rtp_h263_pay_package_new_empty (); |
| |
| pack->payload_start = context->gobs[first]->start; |
| pack->sbit = context->gobs[first]->sbit; |
| pack->ebit = context->gobs[last]->ebit; |
| pack->payload_len = |
| (context->gobs[last]->end - context->gobs[first]->start) + 1; |
| pack->marker = FALSE; |
| |
| if (last == context->no_gobs - 1) { |
| pack->marker = TRUE; |
| } |
| |
| pack->gobn = context->gobs[first]->gobn; |
| pack->mode = GST_RTP_H263_PAYLOAD_HEADER_MODE_A; |
| pack->outbuf = gst_rtp_buffer_new_allocate (pack->mode, 0, 0); |
| |
| GST_DEBUG ("Sending len:%d data to push function", pack->payload_len); |
| |
| return gst_rtp_h263_pay_push (rtph263pay, context, pack); |
| } |
| |
| static GstFlowReturn |
| gst_rtp_h263_pay_B_fragment_push (GstRtpH263Pay * rtph263pay, |
| GstRtpH263PayContext * context, GstRtpH263PayGob * gob, guint first, |
| guint last, GstRtpH263PayBoundry * boundry) |
| { |
| |
| GstRtpH263PayPackage *pack; |
| guint mv; |
| |
| pack = gst_rtp_h263_pay_package_new_empty (); |
| |
| pack->payload_start = gob->macroblocks[first]->start; |
| pack->sbit = gob->macroblocks[first]->sbit; |
| if (first == 0) { |
| pack->payload_start = boundry->start; |
| pack->sbit = boundry->sbit; |
| pack->quant = gob->quant; |
| } else { |
| pack->quant = gob->macroblocks[first]->quant; |
| } |
| pack->payload_end = gob->macroblocks[last]->end; |
| |
| pack->ebit = gob->macroblocks[last]->ebit; |
| pack->mba = gob->macroblocks[first]->mba; |
| pack->gobn = gob->gobn; |
| pack->mode = GST_RTP_H263_PAYLOAD_HEADER_MODE_B; |
| pack->nmvd = 0; |
| |
| if (gob->macroblocks[first]->mb_type < 3) { |
| if (gob->macroblocks[first]->mb_type == 2) |
| pack->nmvd = 8; |
| else if (gob->macroblocks[first]->mb_type < 2) |
| pack->nmvd = 2; |
| |
| for (mv = 0; mv < pack->nmvd; mv++) |
| pack->mvd[mv] = gob->macroblocks[first]->mvd[mv]; |
| } |
| |
| pack->marker = FALSE; |
| if (last == gob->nmacroblocs - 1) { |
| pack->ebit = 0; |
| } |
| |
| if ((format_props[context->piclayer->ptype_srcformat][0] - 1 == gob->gobn) |
| && (last == gob->nmacroblocs - 1)) { |
| pack->marker = TRUE; |
| } |
| |
| pack->payload_len = pack->payload_end - pack->payload_start + 1; |
| pack->outbuf = gst_rtp_buffer_new_allocate (pack->mode, 0, 0); |
| |
| return gst_rtp_h263_pay_push (rtph263pay, context, pack); |
| } |
| |
| |
| static gboolean |
| gst_rtp_h263_pay_mode_B_fragment (GstRtpH263Pay * rtph263pay, |
| GstRtpH263PayContext * context, GstRtpH263PayGob * gob) |
| { |
| |
| |
| /*---------- MODE B MODE FRAGMENTATION ----------*/ |
| GstRtpH263PayMB *mac, *mac0; |
| guint max_payload_size; |
| GstRtpH263PayBoundry boundry; |
| guint mb; |
| guint8 ebit; |
| |
| guint first = 0; |
| guint payload_len; |
| |
| max_payload_size = |
| context->mtu - GST_RTP_H263_PAYLOAD_HEADER_MODE_B - GST_RTP_HEADER_LEN; |
| |
| gst_rtp_h263_pay_boundry_init (&boundry, gob->start, gob->start, gob->sbit, |
| 0); |
| |
| gob->macroblocks = |
| (GstRtpH263PayMB **) g_malloc0 (sizeof (GstRtpH263PayMB *) * |
| format_props[context->piclayer->ptype_srcformat][1]); |
| |
| GST_LOG ("GOB isn't PB frame, applying mode B"); |
| |
| //initializing window |
| context->win_end = boundry.end; |
| if (gst_rtp_h263_pay_move_window_right (context, 32, boundry.ebit, |
| &boundry.end, &gob->end) != 0) { |
| GST_ERROR |
| ("The rest of the bits should be 0, exiting, because something bad happend"); |
| goto decode_error; |
| } |
| //The first GOB of a frame "has no" actual header - PICTURE header is his header |
| if (gob->gobn == 0) { |
| guint shift; |
| GST_LOG ("Initial GOB"); |
| shift = 43; |
| |
| boundry.ebit = |
| gst_rtp_h263_pay_move_window_right (context, shift, boundry.ebit, |
| &boundry.end, &gob->end); |
| |
| //We need PQUANT for mode B packages - so we store it |
| gob->quant = context->window >> 27; |
| |
| //if PCM == 1, then PSBI is present - header has 51 bits |
| //shift for PQUANT (5) and PCM (1) = 6 bits |
| shift = 6; |
| if (context->cpm == 1) |
| shift += 2; |
| boundry.ebit = |
| gst_rtp_h263_pay_move_window_right (context, shift, boundry.ebit, |
| &boundry.end, &gob->end); |
| |
| GST_DEBUG ("window: 0x%08x", context->window); |
| |
| //Shifting the PEI and PSPARE fields |
| while ((context->window & 0x80000000) == 0x80000000) { |
| boundry.ebit = |
| gst_rtp_h263_pay_move_window_right (context, 9, |
| boundry.ebit, &boundry.end, &gob->end); |
| GST_LOG ("window: 0x%x", context->window); |
| } |
| |
| //shift the last PEI field |
| boundry.ebit = |
| gst_rtp_h263_pay_move_window_right (context, 1, boundry.ebit, |
| &boundry.end, &gob->end); |
| |
| } else { |
| //skipping GOBs 24 header bits + 5 GQUANT |
| guint shift = 24; |
| |
| GST_LOG ("INTER GOB"); |
| |
| //if CPM == 1, there are 2 more bits in the header - GSBI header is 31 bits long |
| if (context->cpm == 1) |
| shift += 2; |
| |
| GST_LOG ("window: 0x%x", context->window); |
| boundry.ebit = |
| gst_rtp_h263_pay_move_window_right (context, shift, |
| boundry.ebit, &boundry.end, &gob->end); |
| |
| //We need GQUANT for mode B packages - so we store it |
| gob->quant = context->window >> 27; |
| |
| shift = 5; |
| boundry.ebit = |
| gst_rtp_h263_pay_move_window_right (context, shift, |
| boundry.ebit, &boundry.end, &gob->end); |
| |
| GST_LOG ("window: 0x%x", context->window); |
| } |
| |
| GST_DEBUG ("GQUANT IS: %08x", gob->quant); |
| |
| // We are on MB layer |
| |
| mac = mac0 = gst_rtp_h263_pay_mb_new (&boundry, 0); |
| for (mb = 0; mb < format_props[context->piclayer->ptype_srcformat][1]; mb++) { |
| |
| GST_LOG ("================ START MB %d =================", mb); |
| |
| //Find next macroblock boundaries |
| ebit = mac->ebit; |
| if (!(mac = gst_rtp_h263_pay_B_mbfinder (context, gob, mac, mb))) { |
| |
| GST_LOG ("Error decoding MB - sbit: %d", 8 - ebit); |
| GST_ERROR ("Error decoding in GOB"); |
| |
| gst_rtp_h263_pay_mb_destroy (mac0); |
| goto decode_error; |
| } |
| |
| /* Store macroblock for further processing and delete old MB if any */ |
| gst_rtp_h263_pay_mb_destroy (gob->macroblocks[mb]); |
| gob->macroblocks[mb] = mac; |
| |
| //If mb_type == stuffing, don't increment the mb address |
| if (mac->mb_type == 10) { |
| mb--; |
| continue; |
| } else { |
| gob->nmacroblocs++; |
| } |
| |
| if (mac->end >= gob->end) { |
| GST_LOG ("No more MBs in this GOB"); |
| if (!mac->ebit) { |
| mac->end--; |
| } |
| gob->end = mac->end; |
| break; |
| } |
| GST_DEBUG ("Found MB: mba: %d start: %p end: %p len: %d sbit: %d ebit: %d", |
| mac->mba, mac->start, mac->end, mac->length, mac->sbit, mac->ebit); |
| GST_LOG ("================ END MB %d =================", mb); |
| } |
| gst_rtp_h263_pay_mb_destroy (mac0); |
| |
| mb = 0; |
| first = 0; |
| payload_len = boundry.end - boundry.start + 1; |
| GST_DEBUG ("------------------------- NEW PACKAGE ----------------------"); |
| while (mb < gob->nmacroblocs) { |
| if (payload_len + gob->macroblocks[mb]->length < max_payload_size) { |
| |
| //FIXME: payload_len is not the real length -> ignoring sbit/ebit |
| payload_len += gob->macroblocks[mb]->length; |
| mb++; |
| |
| } else { |
| //FIXME: we should include the last few bits of the GOB in the package - do we do that now? |
| //GST_DEBUG ("Pushing GOBS %d to %d because payload size is %d", first, |
| // first == mb - 1, payload_len); |
| |
| // FIXME: segfault if mb == 0 (first MB is larger than max_payload_size) |
| GST_DEBUG ("Push B mode fragment from mb %d to %d", first, mb - 1); |
| if (gst_rtp_h263_pay_B_fragment_push (rtph263pay, context, gob, first, |
| mb - 1, &boundry)) { |
| GST_ERROR ("Oooops, there was an error sending"); |
| goto decode_error; |
| } |
| |
| payload_len = 0; |
| first = mb; |
| GST_DEBUG |
| ("------------------------- END PACKAGE ----------------------"); |
| GST_DEBUG |
| ("------------------------- NEW PACKAGE ----------------------"); |
| } |
| } |
| |
| /* Push rest */ |
| GST_DEBUG ("Remainder first: %d, MB: %d", first, mb); |
| if (payload_len != 0) { |
| GST_DEBUG ("Push B mode fragment from mb %d to %d", first, mb - 1); |
| if (gst_rtp_h263_pay_B_fragment_push (rtph263pay, context, gob, first, |
| mb - 1, &boundry)) { |
| GST_ERROR ("Oooops, there was an error sending!"); |
| goto decode_error; |
| } |
| } |
| |
| /*---------- END OF MODE B FRAGMENTATION ----------*/ |
| |
| return TRUE; |
| |
| decode_error: |
| return FALSE; |
| } |
| |
| static GstFlowReturn |
| gst_rtp_h263_send_entire_frame (GstRtpH263Pay * rtph263pay, |
| GstRtpH263PayContext * context) |
| { |
| GstRtpH263PayPackage *pack; |
| pack = |
| gst_rtp_h263_pay_package_new (rtph263pay->data, |
| rtph263pay->data + rtph263pay->available_data, |
| rtph263pay->available_data, 0, 0, NULL, TRUE); |
| pack->mode = GST_RTP_H263_PAYLOAD_HEADER_MODE_A; |
| |
| GST_DEBUG ("Available data: %d", rtph263pay->available_data); |
| |
| pack->outbuf = |
| gst_rtp_buffer_new_allocate (GST_RTP_H263_PAYLOAD_HEADER_MODE_A, 0, 0); |
| |
| return gst_rtp_h263_pay_push (rtph263pay, context, pack); |
| } |
| |
| static GstFlowReturn |
| gst_rtp_h263_pay_flush (GstRtpH263Pay * rtph263pay) |
| { |
| |
| /* |
| * FIXME: GSTUF bits are ignored right now, |
| * - not using EBIT/SBIT payload header fields in mode A fragmentation - ffmpeg doesn't need them, but others? |
| */ |
| |
| GstFlowReturn ret; |
| GstRtpH263PayContext *context; |
| gint i; |
| |
| ret = 0; |
| context = (GstRtpH263PayContext *) g_malloc0 (sizeof (GstRtpH263PayContext)); |
| context->mtu = |
| rtph263pay->payload.mtu - (MTU_SECURITY_OFFSET + GST_RTP_HEADER_LEN + |
| GST_RTP_H263_PAYLOAD_HEADER_MODE_C); |
| |
| GST_DEBUG ("MTU: %d", context->mtu); |
| rtph263pay->available_data = gst_buffer_get_size (rtph263pay->current_buffer); |
| if (rtph263pay->available_data == 0) { |
| ret = GST_FLOW_OK; |
| goto end; |
| } |
| |
| /* Get a pointer to all the data for the frame */ |
| gst_buffer_map (rtph263pay->current_buffer, &rtph263pay->map, GST_MAP_READ); |
| rtph263pay->data = (guint8 *) rtph263pay->map.data; |
| |
| /* Picture header */ |
| context->piclayer = (GstRtpH263PayPic *) rtph263pay->data; |
| |
| if (context->piclayer->ptype_pictype == 0) |
| GST_DEBUG ("We got an I-frame"); |
| else |
| GST_DEBUG ("We got a P-frame"); |
| |
| context->cpm = rtph263pay->data[6] >> 7; |
| |
| GST_DEBUG ("CPM: %d", context->cpm); |
| |
| GST_DEBUG ("Payload length is: %d", rtph263pay->available_data); |
| |
| /* |
| * - MODE A - If normal, I and P frames, -> mode A |
| * - GOB layer fragmentation |
| * - MODE B - If normal, I and P frames, but GOBs > mtu |
| * - MB layer fragmentation |
| * - MODE C - For P frames with PB option, but GOBs > mtu |
| * - MB layer fragmentation |
| */ |
| if (rtph263pay->available_data + GST_RTP_H263_PAYLOAD_HEADER_MODE_A + |
| GST_RTP_HEADER_LEN < context->mtu) { |
| ret = gst_rtp_h263_send_entire_frame (rtph263pay, context); |
| } else { |
| |
| /*---------- FRAGMENTING THE FRAME BECAUSE TOO LARGE TO FIT IN MTU ----------*/ |
| GstRtpH263PayBoundry bound; |
| gint first; |
| guint payload_len; |
| gboolean forcea = FALSE; |
| |
| GST_DEBUG ("Frame too large for MTU"); |
| /* |
| * Let's go trough all the data and fragment it untill end is reached |
| */ |
| |
| gst_rtp_h263_pay_boundry_init (&bound, NULL, rtph263pay->data - 1, 0, 0); |
| context->gobs = |
| (GstRtpH263PayGob **) g_malloc0 (format_props[context-> |
| piclayer->ptype_srcformat][0] * sizeof (GstRtpH263PayGob *)); |
| |
| |
| for (i = 0; i < format_props[context->piclayer->ptype_srcformat][0]; i++) { |
| GST_DEBUG ("Searching for gob %d", i); |
| if (!gst_rtp_h263_pay_gobfinder (rtph263pay, &bound)) { |
| if (i <= 1) { |
| GST_WARNING |
| ("No GOB's were found in data stream! Please enable RTP mode in encoder. Forcing mode A for now."); |
| ret = gst_rtp_h263_send_entire_frame (rtph263pay, context); |
| goto end; |
| } else { |
| /* try to send fragments corresponding to found GOBs */ |
| forcea = TRUE; |
| break; |
| } |
| } |
| |
| context->gobs[i] = gst_rtp_h263_pay_gob_new (&bound, i); |
| //FIXME - encoders may generate an EOS gob that has to be processed |
| GST_DEBUG |
| ("Gob values are: gobn: %d, start: %p len: %d ebit: %d sbit: %d", i, |
| context->gobs[i]->start, context->gobs[i]->length, |
| context->gobs[i]->ebit, context->gobs[i]->sbit); |
| } |
| /* NOTE some places may still assume this to be the max possible */ |
| context->no_gobs = i; |
| GST_DEBUG ("Found %d GOBS of maximum %d", |
| context->no_gobs, format_props[context->piclayer->ptype_srcformat][0]); |
| |
| // Make packages smaller than MTU |
| // A mode |
| // - if ( GOB > MTU) -> B mode || C mode |
| // Push packages |
| |
| first = 0; |
| payload_len = 0; |
| i = 0; |
| while (i < context->no_gobs) { |
| |
| if (context->gobs[i]->length >= context->mtu) { |
| if (payload_len == 0) { |
| |
| GST_DEBUG ("GOB len > MTU"); |
| if (rtph263pay->prop_payload_mode || forcea) { |
| payload_len = context->gobs[i]->length; |
| goto force_a; |
| } |
| if (!context->piclayer->ptype_pbmode) { |
| GST_DEBUG ("MODE B on GOB %d needed", i); |
| if (!gst_rtp_h263_pay_mode_B_fragment (rtph263pay, context, |
| context->gobs[i])) { |
| GST_ERROR ("There was an error fragmenting in mode B"); |
| ret = GST_FLOW_ERROR; |
| goto end; |
| } |
| } else { |
| //IMPLEMENT C mode |
| GST_ERROR ("MODE C on GOB %d needed, but not supported yet", i); |
| /*if(!gst_rtp_h263_pay_mode_C_fragment(rtph263pay, context, context->gobs[i])) { |
| ret = GST_FLOW_OK; |
| GST_ERROR("There was an error fragmenting in mode C"); |
| goto decode_error; |
| } */ |
| goto decode_error; |
| } |
| decode_error: |
| i++; |
| first = i; |
| continue; |
| |
| } else { |
| goto payload_a_push; |
| } |
| } |
| |
| if (payload_len + context->gobs[i]->length < context->mtu) { |
| GST_DEBUG ("GOB %d fills mtu", i); |
| payload_len += context->gobs[i]->length; |
| i++; |
| if (i == context->no_gobs) { |
| GST_DEBUG ("LAST GOB %d", i); |
| goto payload_a_push; |
| } |
| |
| } else { |
| payload_a_push: |
| GST_DEBUG ("Pushing GOBS %d to %d because payload size is %d", first, |
| first == i ? i : i - 1, payload_len); |
| gst_rtp_h263_pay_A_fragment_push (rtph263pay, context, first, |
| first == i ? i : i - 1); |
| payload_len = 0; |
| first = i; |
| } |
| continue; |
| |
| force_a: |
| GST_DEBUG ("Pushing GOBS %d to %d because payload size is %d", first, i, |
| payload_len); |
| gst_rtp_h263_pay_A_fragment_push (rtph263pay, context, first, i); |
| payload_len = 0; |
| i++; |
| first = i; |
| } |
| |
| |
| }/*---------- END OF FRAGMENTATION ----------*/ |
| |
| /* Flush the input buffer data */ |
| |
| end: |
| gst_rtp_h263_pay_context_destroy (context, |
| context->piclayer->ptype_srcformat); |
| gst_buffer_unmap (rtph263pay->current_buffer, &rtph263pay->map); |
| gst_buffer_replace (&rtph263pay->current_buffer, NULL); |
| |
| return ret; |
| } |
| |
| static GstFlowReturn |
| gst_rtp_h263_pay_handle_buffer (GstRTPBasePayload * payload, GstBuffer * buffer) |
| { |
| |
| GstRtpH263Pay *rtph263pay; |
| GstFlowReturn ret; |
| |
| GST_DEBUG ("-------------------- NEW FRAME ---------------"); |
| rtph263pay = GST_RTP_H263_PAY (payload); |
| |
| rtph263pay->first_ts = GST_BUFFER_PTS (buffer); |
| |
| gst_buffer_replace (&rtph263pay->current_buffer, buffer); |
| gst_buffer_unref (buffer); |
| |
| /* we always encode and flush a full picture */ |
| ret = gst_rtp_h263_pay_flush (rtph263pay); |
| GST_DEBUG ("-------------------- END FRAME ---------------"); |
| |
| return ret; |
| } |
| |
| gboolean |
| gst_rtp_h263_pay_plugin_init (GstPlugin * plugin) |
| { |
| return gst_element_register (plugin, "rtph263pay", |
| GST_RANK_SECONDARY, GST_TYPE_RTP_H263_PAY); |
| } |