diff options
Diffstat (limited to 'gst/nuvdemux')
| -rw-r--r-- | gst/nuvdemux/Makefile.am | 9 | ||||
| -rw-r--r-- | gst/nuvdemux/gstnuvdemux.c | 920 | ||||
| -rw-r--r-- | gst/nuvdemux/gstnuvdemux.h | 173 |
3 files changed, 1102 insertions, 0 deletions
diff --git a/gst/nuvdemux/Makefile.am b/gst/nuvdemux/Makefile.am new file mode 100644 index 00000000..f3a4e7d8 --- /dev/null +++ b/gst/nuvdemux/Makefile.am @@ -0,0 +1,9 @@ + +plugin_LTLIBRARIES = libgstnuvdemux.la + +libgstnuvdemux_la_CFLAGS = ${GST_CFLAGS} +libgstnuvdemux_la_LIBADD = $(GST_BASE_LIBS) +libgstnuvdemux_la_LDFLAGS = ${GST_PLUGIN_LDFLAGS} +libgstnuvdemux_la_SOURCES = gstnuvdemux.c + +noinst_HEADERS = gstnuvdemux.h diff --git a/gst/nuvdemux/gstnuvdemux.c b/gst/nuvdemux/gstnuvdemux.c new file mode 100644 index 00000000..e678bb8c --- /dev/null +++ b/gst/nuvdemux/gstnuvdemux.c @@ -0,0 +1,920 @@ +/* GStreamer + * Copyright (C) <2006> Renato Araujo Oliveira Filho <renato.filho@indt.org.br> + * Rosfran Borges <rosfran.borges@indt.org.br> + * + * 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., 59 Temple Place - Suite 330, + * Boston, MA 02111-1307, USA. + */ +/* Element-Checklist-Version: 5 */ + +/** + * SECTION:element-nuvdemux + * + * <refsect2> + * <para> + * Demuxes an .nuv file into raw or compressed audio and/or video streams. + * </para> + * <para> + * This element currently only supports pull-based scheduling. + * </para> + * <title>Example launch line</title> + * <para> + * <programlisting> + * gst-launch filesrc test.nuv ! nuvdemux name=demux demux.audio_00 ! decodebin ! audioconvert ! audioresample ! autoaudiosink demux.video_00 ! queue ! decodebin ! ffmpegcolorspace ! videoscale ! autovideosink + * </programlisting> + * Play (parse and decode) an .nuv file and try to output it to + * an automatically detected soundcard and videosink. If the NUV file contains + * compressed audio or video data, this will only work if you have the + * right decoder elements/plugins installed. + * </para> + * </refsect2> + * + */ + +#ifdef HAVE_CONFIG_H +#include "config.h" +#endif + +#include <gst/gst.h> +#include <gst/gsterror.h> +#include <gst/gstplugin.h> +#include <string.h> + +#include "gst/gst-i18n-plugin.h" +#include "gstnuvdemux.h" + +GST_DEBUG_CATEGORY_STATIC (nuvdemux_debug); +#define GST_CAT_DEFAULT nuvdemux_debug + + +#define GST_FLOW_ERROR_NO_DATA -101 + +GST_DEBUG_CATEGORY_EXTERN (GST_CAT_EVENT); + +static const GstElementDetails gst_nuv_demux_details = +GST_ELEMENT_DETAILS ("Nuv demuxer", + "Codec/Demuxer", + "Demultiplex a .nuv file into audio and video", + "Renato Araujo Oliveira Filho <renato.filho@indt.org.br>," + "Rosfran Borges <rosfran.borges@indt.org.br>"); + +static GstStaticPadTemplate sink_template = GST_STATIC_PAD_TEMPLATE ("sink", + GST_PAD_SINK, + GST_PAD_ALWAYS, + GST_STATIC_CAPS ("video/x-nuv")); + +static GstStaticPadTemplate audio_src_template = +GST_STATIC_PAD_TEMPLATE ("audio_src", + GST_PAD_SRC, + GST_PAD_SOMETIMES, + GST_STATIC_CAPS_ANY); + +static GstStaticPadTemplate video_src_template = +GST_STATIC_PAD_TEMPLATE ("video_src", + GST_PAD_SRC, + GST_PAD_SOMETIMES, + GST_STATIC_CAPS_ANY); + +/* NUV Demux indexes init/dispose callers */ +static void gst_nuv_demux_finalize (GObject * object); +static GstStateChangeReturn gst_nuv_demux_change_state (GstElement * element, + GstStateChange transition); +static void gst_nuv_demux_loop (GstPad * pad); +static GstFlowReturn gst_nuv_demux_chain (GstPad * pad, GstBuffer * buf); +static GstFlowReturn gst_nuv_demux_play (GstPad * pad); +static gboolean gst_nuv_demux_sink_activate_pull (GstPad * sinkpad, + gboolean active); +static gboolean gst_nuv_demux_sink_activate (GstPad * sinkpad); +static GstFlowReturn gst_nuv_demux_read_bytes (GstNuvDemux * nuv, guint64 size, + gboolean move, GstBuffer ** buffer); +static void gst_nuv_demux_reset (GstNuvDemux * nuv); +static gboolean gst_nuv_demux_handle_sink_event (GstPad * sinkpad, + GstEvent * event); +static void gst_nuv_demux_destoy_src_pad (GstNuvDemux * nuv); +static void gst_nuv_demux_send_eos (GstNuvDemux * nuv); + +/* GObject methods */ +GST_BOILERPLATE (GstNuvDemux, gst_nuv_demux, GstElement, GST_TYPE_ELEMENT); + +#if G_BYTE_ORDER == G_BIG_ENDIAN +static inline gdouble +_gdouble_swap_le_be (gdouble * d) +{ + union + { + guint64 i; + gdouble d; + } u; + + u.d = *d; + u.i = GUINT64_SWAP_LE_BE (u.i); + return u.d; +} + +#define READ_DOUBLE_FROM_LE(d) (_gdouble_swap_le_be(d)) +#else /* G_BYTE_ORDER != G_BIG_ENDIAN */ +#define READ_DOUBLE_FROM_LE(d) *((gdouble* ) (d)) +#endif /* G_BYTE_ORDER != G_BIG_ENDIAN */ + + +static void +gst_nuv_demux_base_init (gpointer klass) +{ + GstElementClass *element_class = GST_ELEMENT_CLASS (klass); + + gst_element_class_add_pad_template (element_class, + gst_static_pad_template_get (&audio_src_template)); + + gst_element_class_add_pad_template (element_class, + gst_static_pad_template_get (&video_src_template)); + + gst_element_class_add_pad_template (element_class, + gst_static_pad_template_get (&sink_template)); + gst_element_class_set_details (element_class, &gst_nuv_demux_details); +} + +static void +gst_nuv_demux_class_init (GstNuvDemuxClass * klass) +{ + GstElementClass *gstelement_class = GST_ELEMENT_CLASS (klass); + GObjectClass *gobject_class = (GObjectClass *) klass; + + GST_DEBUG_CATEGORY_INIT (nuvdemux_debug, "nuvdemux", + 0, "Demuxer for NUV streams"); + + parent_class = g_type_class_peek_parent (klass); + + gobject_class->finalize = gst_nuv_demux_finalize; + gstelement_class->change_state = gst_nuv_demux_change_state; +} + +static void +gst_nuv_demux_init (GstNuvDemux * nuv, GstNuvDemuxClass * nuv_class) +{ + nuv->sinkpad = gst_pad_new_from_static_template (&sink_template, "sink"); + + gst_pad_set_activate_function (nuv->sinkpad, gst_nuv_demux_sink_activate); + + gst_pad_set_activatepull_function (nuv->sinkpad, + gst_nuv_demux_sink_activate_pull); + + gst_pad_set_chain_function (nuv->sinkpad, + GST_DEBUG_FUNCPTR (gst_nuv_demux_chain)); + + gst_pad_set_event_function (nuv->sinkpad, gst_nuv_demux_handle_sink_event); + + gst_element_add_pad (GST_ELEMENT (nuv), nuv->sinkpad); + + nuv->adapter = NULL; + nuv->mpeg_buffer = NULL; + nuv->h = NULL; + nuv->eh = NULL; + nuv->fh = NULL; + gst_nuv_demux_reset (nuv); +} + +static void +gst_nuv_demux_finalize (GObject * object) +{ + GstNuvDemux *nuv = GST_NUV_DEMUX (object); + + if (nuv->mpeg_buffer != NULL) { + gst_buffer_unref (nuv->mpeg_buffer); + } + + gst_nuv_demux_destoy_src_pad (nuv); + gst_nuv_demux_reset (nuv); + if (nuv->adapter != NULL) { + gst_object_unref (nuv->adapter); + } + G_OBJECT_CLASS (parent_class)->finalize (object); +} + +/***************************************************************************** + * Utils fucntions + *****************************************************************************/ + +static gboolean +gst_nuv_demux_handle_sink_event (GstPad * sinkpad, GstEvent * event) +{ + gboolean res = FALSE; + + switch (GST_EVENT_TYPE (event)) { + case GST_EVENT_NEWSEGMENT: + res = TRUE; + break; + default: + return gst_pad_event_default (sinkpad, event); + break; + } + + gst_event_unref (event); + return res; +} + + +/* HeaderLoad: + */ +static GstFlowReturn +gst_nuv_demux_header_load (GstNuvDemux * nuv, nuv_header ** h_ret) +{ + GstBuffer *buffer = NULL; + GstFlowReturn res = gst_nuv_demux_read_bytes (nuv, 72, TRUE, &buffer); + + if (res != GST_FLOW_OK) + return res; + + nuv_header *h = g_new0 (nuv_header, 1); + + memcpy (h->id, buffer->data, 12); + memcpy (h->version, buffer->data + 12, 5); + h->i_width = GST_READ_UINT32_LE (&buffer->data[20]); + h->i_height = GST_READ_UINT32_LE (&buffer->data[24]); + h->i_width_desired = GST_READ_UINT32_LE (&buffer->data[28]); + h->i_height_desired = GST_READ_UINT32_LE (&buffer->data[32]); + h->i_mode = buffer->data[36]; + h->d_aspect = READ_DOUBLE_FROM_LE (&buffer->data[40]); + h->d_fps = READ_DOUBLE_FROM_LE (&buffer->data[48]); + h->i_video_blocks = GST_READ_UINT32_LE (&buffer->data[56]); + h->i_audio_blocks = GST_READ_UINT32_LE (&buffer->data[60]); + h->i_text_blocks = GST_READ_UINT32_LE (&buffer->data[64]); + h->i_keyframe_distance = GST_READ_UINT32_LE (&buffer->data[68]); + + GST_DEBUG_OBJECT (nuv, + "nuv: h=%s v=%s %dx%d a=%f fps=%f v=%d a=%d t=%d kfd=%d", h->id, + h->version, h->i_width, h->i_height, h->d_aspect, h->d_fps, + h->i_video_blocks, h->i_audio_blocks, h->i_text_blocks, + h->i_keyframe_distance); + + *h_ret = h; + gst_buffer_unref (buffer); + return res; +} + +static GstFlowReturn +gst_nuv_demux_stream_header_data (GstNuvDemux * nuv) +{ + GstFlowReturn res = gst_nuv_demux_header_load (nuv, &nuv->h); + + if (res == GST_FLOW_OK) + nuv->state = GST_NUV_DEMUX_EXTRA_DATA; + return res; +} + +/* + * Read NUV file tag + */ +static GstFlowReturn +gst_nuv_demux_stream_file_header (GstNuvDemux * nuv) +{ + GstFlowReturn res = GST_FLOW_OK; + GstBuffer *file_header = NULL; + + res = gst_nuv_demux_read_bytes (nuv, 12, FALSE, &file_header); + if (res != GST_FLOW_OK) { + return res; + } else { + if (strncmp ((gchar *) file_header->data, "MythTVVideo", 11) || + strncmp ((gchar *) file_header->data, "NuppelVideo", 11)) { + nuv->state = GST_NUV_DEMUX_HEADER_DATA; + } else { + GST_DEBUG_OBJECT (nuv, "error parsing file header"); + nuv->state = GST_NUV_DEMUX_INVALID_DATA; + res = GST_FLOW_ERROR; + } + } + if (file_header != NULL) { + gst_buffer_unref (file_header); + } + return res; +} + +/* FrameHeaderLoad: + */ +static GstFlowReturn +gst_nuv_demux_frame_header_load (GstNuvDemux * nuv, nuv_frame_header ** h_ret) +{ + unsigned char *data; + nuv_frame_header *h; + GstBuffer *buf = NULL; + + GstFlowReturn res = gst_nuv_demux_read_bytes (nuv, 12, TRUE, &buf); + + if (res != GST_FLOW_OK) { + if (buf != NULL) { + gst_buffer_unref (buf); + } + return res; + } + + h = g_new0 (nuv_frame_header, 1); + data = buf->data; + + h->i_type = data[0]; + h->i_compression = data[1]; + h->i_keyframe = data[2]; + h->i_filters = data[3]; + + h->i_timecode = GST_READ_UINT32_LE (&data[4]); + h->i_length = GST_READ_UINT32_LE (&data[8]); + GST_DEBUG_OBJECT (nuv, "frame hdr: t=%c c=%c k=%d f=0x%x timecode=%u l=%u", + h->i_type, + h->i_compression ? h->i_compression : ' ', + h->i_keyframe ? h->i_keyframe : ' ', + h->i_filters, h->i_timecode, h->i_length); + + *h_ret = h; + gst_buffer_unref (buf); + return GST_FLOW_OK; +} + +static GstFlowReturn +gst_nuv_demux_extended_header_load (GstNuvDemux * nuv, + nuv_extended_header ** h_ret) +{ + unsigned char *data; + GstBuffer *buff = NULL; + nuv_extended_header *h; + + + GstFlowReturn res = gst_nuv_demux_read_bytes (nuv, 512, TRUE, &buff); + + if (res != GST_FLOW_OK) { + if (buff != NULL) { + gst_buffer_unref (buff); + } + return res; + } + + h = g_new0 (nuv_extended_header, 1); + data = buff->data; + h->i_version = GST_READ_UINT32_LE (&data[0]); + h->i_video_fcc = GST_MAKE_FOURCC (data[4], data[5], data[6], data[7]); + h->i_audio_fcc = GST_MAKE_FOURCC (data[8], data[9], data[10], data[11]); + h->i_audio_sample_rate = GST_READ_UINT32_LE (&data[12]); + h->i_audio_bits_per_sample = GST_READ_UINT32_LE (&data[16]); + h->i_audio_channels = GST_READ_UINT32_LE (&data[20]); + h->i_audio_compression_ratio = GST_READ_UINT32_LE (&data[24]); + h->i_audio_quality = GST_READ_UINT32_LE (&data[28]); + h->i_rtjpeg_quality = GST_READ_UINT32_LE (&data[32]); + h->i_rtjpeg_luma_filter = GST_READ_UINT32_LE (&data[36]); + h->i_rtjpeg_chroma_filter = GST_READ_UINT32_LE (&data[40]); + h->i_lavc_bitrate = GST_READ_UINT32_LE (&data[44]); + h->i_lavc_qmin = GST_READ_UINT32_LE (&data[48]); + h->i_lavc_qmin = GST_READ_UINT32_LE (&data[52]); + h->i_lavc_maxqdiff = GST_READ_UINT32_LE (&data[56]); + h->i_seekable_offset = GST_READ_UINT64_LE (&data[60]); + h->i_keyframe_adjust_offset = GST_READ_UINT64_LE (&data[68]); + + GST_DEBUG_OBJECT (nuv, + "ex hdr: v=%d vffc=%4.4s afcc=%4.4s %dHz %dbits ach=%d acr=%d aq=%d" + "rtjpeg q=%d lf=%d lc=%d lavc br=%d qmin=%d qmax=%d maxqdiff=%d seekableoff=%lld keyfao=%lld", + h->i_version, (gchar *) & h->i_video_fcc, (gchar *) & h->i_audio_fcc, + h->i_audio_sample_rate, h->i_audio_bits_per_sample, h->i_audio_channels, + h->i_audio_compression_ratio, h->i_audio_quality, h->i_rtjpeg_quality, + h->i_rtjpeg_luma_filter, h->i_rtjpeg_chroma_filter, h->i_lavc_bitrate, + h->i_lavc_qmin, h->i_lavc_qmax, h->i_lavc_maxqdiff, h->i_seekable_offset, + h->i_keyframe_adjust_offset); + + *h_ret = h; + gst_buffer_unref (buff); + return res; +} + +static gboolean +gst_nuv_demux_handle_src_event (GstPad * pad, GstEvent * event) +{ + gst_event_unref (event); + return FALSE; +} + + +static void +gst_nuv_demux_create_pads (GstNuvDemux * nuv) +{ + if (nuv->h->i_video_blocks != 0) { + GstCaps *video_caps = NULL; + + nuv->src_video_pad = + gst_pad_new_from_static_template (&video_src_template, "video_src"); + + video_caps = gst_caps_new_simple ("video/x-divx", + "divxversion", G_TYPE_INT, 4, + "width", G_TYPE_INT, nuv->h->i_width, + "height", G_TYPE_INT, nuv->h->i_height, + "framerate", GST_TYPE_FRACTION, (gint) (nuv->h->d_fps * 1000.0f), 1000, + "pixel-aspect-ratio", GST_TYPE_FRACTION, + (gint) (nuv->h->d_aspect * 1000.0f), 1000, NULL); + + gst_pad_use_fixed_caps (nuv->src_video_pad); + gst_pad_set_active (nuv->src_video_pad, TRUE); + gst_pad_set_caps (nuv->src_video_pad, video_caps); + + gst_pad_set_event_function (nuv->src_video_pad, + gst_nuv_demux_handle_src_event); + gst_element_add_pad (GST_ELEMENT (nuv), nuv->src_video_pad); + gst_caps_unref (video_caps); + } + + if (nuv->h->i_audio_blocks != 0) { + GstCaps *audio_caps = NULL; + + nuv->src_audio_pad = + gst_pad_new_from_static_template (&audio_src_template, "audio_src"); + + audio_caps = gst_caps_new_simple ("audio/mpeg", + "rate", G_TYPE_INT, nuv->eh->i_audio_sample_rate, + "format", GST_TYPE_FOURCC, nuv->eh->i_audio_fcc, + "channels", G_TYPE_INT, nuv->eh->i_audio_channels, + "mpegversion", G_TYPE_INT, nuv->eh->i_version, NULL); + + gst_pad_use_fixed_caps (nuv->src_audio_pad); + gst_pad_set_active (nuv->src_audio_pad, TRUE); + gst_pad_set_caps (nuv->src_audio_pad, audio_caps); + gst_element_add_pad (GST_ELEMENT (nuv), nuv->src_audio_pad); + + gst_pad_set_event_function (nuv->src_audio_pad, + gst_nuv_demux_handle_src_event); + gst_caps_unref (audio_caps); + } + + gst_element_no_more_pads (GST_ELEMENT (nuv)); +} + +static GstFlowReturn +gst_nuv_demux_read_head_frame (GstNuvDemux * nuv) +{ + GstFlowReturn ret = GST_FLOW_OK; + + ret = gst_nuv_demux_frame_header_load (nuv, &nuv->fh); + if (ret != GST_FLOW_OK) + return ret; + + nuv->state = GST_NUV_DEMUX_MOVI; + return ret; +} + +static GstFlowReturn +gst_nuv_demux_stream_data (GstNuvDemux * nuv) +{ + GstFlowReturn ret = GST_FLOW_OK; + GstBuffer *buf = NULL; + nuv_frame_header *h = nuv->fh; + + if (h->i_type == 'R') + goto done; + + ret = gst_nuv_demux_read_bytes (nuv, h->i_length, TRUE, &buf); + if (ret != GST_FLOW_OK) { + return ret; + } + + GST_BUFFER_TIMESTAMP (buf) = h->i_timecode * GST_MSECOND; + + switch (h->i_type) { + case 'V': + { + GST_BUFFER_OFFSET (buf) = nuv->video_offset; + gst_buffer_set_caps (buf, GST_PAD_CAPS (nuv->src_video_pad)); + ret = gst_pad_push (nuv->src_video_pad, buf); + nuv->video_offset++; + break; + } + case 'A': + { + GST_BUFFER_OFFSET (buf) = nuv->audio_offset; + gst_buffer_set_caps (buf, GST_PAD_CAPS (nuv->src_audio_pad)); + ret = gst_pad_push (nuv->src_audio_pad, buf); + nuv->audio_offset++; + break; + } + case 'S': + { + switch (h->i_compression) { + case 'V': + gst_pad_push_event (nuv->src_video_pad, + gst_event_new_new_segment (TRUE, 1.0, GST_FORMAT_TIME, 0, -1, 0)); + break; + case 'A': + gst_pad_push_event (nuv->src_audio_pad, + gst_event_new_new_segment (TRUE, 1.0, GST_FORMAT_TIME, 0, -1, 0)); + + break; + default: + break; + } + break; + } + } + +done: + nuv->state = GST_NUV_DEMUX_FRAME_HEADER; + g_free (nuv->fh); + nuv->fh = NULL; + return ret; +} + +static GstFlowReturn +gst_nuv_demux_stream_mpeg_data (GstNuvDemux * nuv) +{ + GstFlowReturn ret = GST_FLOW_OK; + + /* ffmpeg extra data */ + ret = + gst_nuv_demux_read_bytes (nuv, nuv->mpeg_data_size, TRUE, + &nuv->mpeg_buffer); + if (ret != GST_FLOW_OK) { + return GST_FLOW_ERROR; + } + GST_BUFFER_SIZE (nuv->mpeg_buffer) = nuv->mpeg_data_size; + nuv->state = GST_NUV_DEMUX_EXTEND_HEADER; + return ret; +} + +static GstFlowReturn +gst_nuv_demux_stream_extra_data (GstNuvDemux * nuv) +{ + GstFlowReturn ret = GST_FLOW_OK; + + /* Load 'D' */ + nuv_frame_header *h; + + ret = gst_nuv_demux_frame_header_load (nuv, &h); + if (ret != GST_FLOW_OK) + return ret; + + if (h->i_type != 'D') { + g_free (h); + return GST_FLOW_ERROR; + } + + if (h->i_length > 0) { + if (h->i_compression == 'F') { + nuv->state = GST_NUV_DEMUX_MPEG_DATA; + } else { + g_free (h); + return GST_FLOW_ERROR; + } + } else { + nuv->state = GST_NUV_DEMUX_EXTEND_HEADER; + } + + g_free (h); + h = NULL; + return ret; +} + +static GstFlowReturn +gst_nuv_demux_stream_extend_header_data (GstNuvDemux * nuv) +{ + GstFlowReturn ret = GST_FLOW_OK; + + ret = gst_nuv_demux_extended_header_load (nuv, &nuv->eh); + if (ret != GST_FLOW_OK) + return ret; + + gst_nuv_demux_create_pads (nuv); + nuv->state = GST_NUV_DEMUX_FRAME_HEADER; + return ret; +} + +static GstFlowReturn +gst_nuv_demux_stream_extend_header (GstNuvDemux * nuv) +{ + GstBuffer *buf = NULL; + GstFlowReturn res = GST_FLOW_OK; + + res = gst_nuv_demux_read_bytes (nuv, 1, FALSE, &buf); + if (res != GST_FLOW_OK) { + if (buf != NULL) { + gst_buffer_unref (buf); + } + return res; + } + + if (buf->data[0] == 'X') { + gst_buffer_unref (buf); + buf = NULL; + nuv_frame_header *h = NULL; + + res = gst_nuv_demux_frame_header_load (nuv, &h); + if (res != GST_FLOW_OK) + return res; + + if (h->i_length != 512) { + g_free (h); + return GST_FLOW_ERROR; + } + g_free (h); + h = NULL; + nuv->state = GST_NUV_DEMUX_EXTEND_HEADER_DATA; + } else { + nuv->state = GST_NUV_DEMUX_INVALID_DATA; + g_object_unref (buf); + GST_ELEMENT_WARNING (nuv, STREAM, FAILED, + (_("incomplete NUV support")), ("incomplete NUV support")); + return GST_FLOW_ERROR; + } + return res; +} + +static GstFlowReturn +gst_nuv_demux_play (GstPad * pad) +{ + GstFlowReturn res = GST_FLOW_OK; + GstNuvDemux *nuv = GST_NUV_DEMUX (GST_PAD_PARENT (pad)); + + switch (nuv->state) { + case GST_NUV_DEMUX_START: + res = gst_nuv_demux_stream_file_header (nuv); + if ((res != GST_FLOW_OK) && (res != GST_FLOW_ERROR_NO_DATA)) { + goto pause; + } + if (nuv->state != GST_NUV_DEMUX_HEADER_DATA) + break; + + case GST_NUV_DEMUX_HEADER_DATA: + res = gst_nuv_demux_stream_header_data (nuv); + if ((res != GST_FLOW_OK) && (res != GST_FLOW_ERROR_NO_DATA)) { + goto pause; + } + if (nuv->state != GST_NUV_DEMUX_EXTRA_DATA) + break; + + case GST_NUV_DEMUX_EXTRA_DATA: + res = gst_nuv_demux_stream_extra_data (nuv); + if ((res != GST_FLOW_OK) && (res != GST_FLOW_ERROR_NO_DATA)) { + goto pause; + } + if (nuv->state != GST_NUV_DEMUX_MPEG_DATA) + break; + + case GST_NUV_DEMUX_MPEG_DATA: + res = gst_nuv_demux_stream_mpeg_data (nuv); + if ((res != GST_FLOW_OK) && (res != GST_FLOW_ERROR_NO_DATA)) { + goto pause; + } + + if (nuv->state != GST_NUV_DEMUX_EXTEND_HEADER) + break; + + case GST_NUV_DEMUX_EXTEND_HEADER: + res = gst_nuv_demux_stream_extend_header (nuv); + if ((res != GST_FLOW_OK) && (res != GST_FLOW_ERROR_NO_DATA)) { + goto pause; + } + if (nuv->state != GST_NUV_DEMUX_EXTEND_HEADER_DATA) + break; + + case GST_NUV_DEMUX_EXTEND_HEADER_DATA: + res = gst_nuv_demux_stream_extend_header_data (nuv); + if ((res != GST_FLOW_OK) && (res != GST_FLOW_ERROR_NO_DATA)) { + goto pause; + } + + if (nuv->state != GST_NUV_DEMUX_FRAME_HEADER) + break; + + case GST_NUV_DEMUX_FRAME_HEADER: + res = gst_nuv_demux_read_head_frame (nuv); + if ((res != GST_FLOW_OK) && (res != GST_FLOW_ERROR_NO_DATA)) { + goto pause; + } + if (nuv->state != GST_NUV_DEMUX_MOVI) + break; + + case GST_NUV_DEMUX_MOVI: + res = gst_nuv_demux_stream_data (nuv); + if ((res != GST_FLOW_OK) && (res != GST_FLOW_CUSTOM_ERROR)) { + goto pause; + } + break; + case GST_NUV_DEMUX_INVALID_DATA: + goto pause; + break; + default: + g_assert_not_reached (); + } + + GST_DEBUG_OBJECT (nuv, "state: %d res:%s", nuv->state, + gst_flow_get_name (res)); + + return GST_FLOW_OK; + +pause: + GST_LOG_OBJECT (nuv, "pausing task, reason %s", gst_flow_get_name (res)); + gst_pad_pause_task (nuv->sinkpad); + if (GST_FLOW_IS_FATAL (res)) { + GST_ELEMENT_ERROR (nuv, STREAM, FAILED, + (_("Internal data stream error.")), + ("streaming stopped, reason %s", gst_flow_get_name (res))); + + gst_nuv_demux_send_eos (nuv); + } + return res; +} + +static void +gst_nuv_demux_send_eos (GstNuvDemux * nuv) +{ + gst_element_post_message (GST_ELEMENT (nuv), + gst_message_new_segment_done (GST_OBJECT (nuv), GST_FORMAT_TIME, -1)); + + if (nuv->src_video_pad) + gst_pad_push_event (nuv->src_video_pad, gst_event_new_eos ()); + if (nuv->src_audio_pad) + gst_pad_push_event (nuv->src_audio_pad, gst_event_new_eos ()); +} + +static GstFlowReturn +gst_nuv_demux_read_bytes (GstNuvDemux * nuv, guint64 size, gboolean move, + GstBuffer ** buffer) +{ + GstFlowReturn ret = GST_FLOW_OK; + + if (size == 0) { + *buffer = gst_buffer_new (); + return ret; + } + + if (nuv->mode == 0) { + ret = gst_pad_pull_range (nuv->sinkpad, nuv->offset, size, buffer); + if (ret == GST_FLOW_OK) { + if (move) { + nuv->offset += size; + } + /* got eos */ + } else if (ret == GST_FLOW_UNEXPECTED) { + gst_nuv_demux_send_eos (nuv); + return GST_FLOW_WRONG_STATE; + } + } else { + if (gst_adapter_available (nuv->adapter) < size) + return GST_FLOW_ERROR_NO_DATA; + + if (move) { + *buffer = gst_adapter_take_buffer (nuv->adapter, size); + } else { + guint8 *data = NULL; + + data = (guint8 *) gst_adapter_peek (nuv->adapter, size); + *buffer = gst_buffer_new (); + gst_buffer_set_data (*buffer, data, size); + } + } + return ret; +} + +static gboolean +gst_nuv_demux_sink_activate (GstPad * sinkpad) +{ + gboolean res = TRUE; + GstNuvDemux *nuv = GST_NUV_DEMUX (gst_pad_get_parent (sinkpad)); + + if (gst_pad_check_pull_range (sinkpad)) { + nuv->mode = 0; + nuv->adapter = NULL; + res = gst_pad_activate_pull (sinkpad, TRUE); + } else { + nuv->mode = 1; + nuv->adapter = gst_adapter_new (); + res = gst_pad_activate_push (sinkpad, TRUE); + } + + g_object_unref (nuv); + return res; +} + +static gboolean +gst_nuv_demux_sink_activate_pull (GstPad * sinkpad, gboolean active) +{ + GstNuvDemux *nuv = GST_NUV_DEMUX (gst_pad_get_parent (sinkpad)); + + if (active) { + gst_pad_start_task (sinkpad, (GstTaskFunction) gst_nuv_demux_loop, sinkpad); + } else { + gst_pad_stop_task (sinkpad); + } + gst_object_unref (nuv); + + return TRUE; +} + +static GstFlowReturn +gst_nuv_demux_chain (GstPad * pad, GstBuffer * buf) +{ + GstNuvDemux *nuv = GST_NUV_DEMUX (gst_pad_get_parent (pad)); + + gst_adapter_push (nuv->adapter, buf); + + return gst_nuv_demux_play (pad); +} + +static void +gst_nuv_demux_loop (GstPad * pad) +{ + gst_nuv_demux_play (pad); +} + +static void +gst_nuv_demux_reset (GstNuvDemux * nuv) +{ + nuv->state = GST_NUV_DEMUX_START; + nuv->mode = 0; + nuv->offset = 0; + nuv->video_offset = 0; + nuv->audio_offset = 0; + + if (nuv->adapter != NULL) + gst_adapter_clear (nuv->adapter); + + if (nuv->mpeg_buffer != NULL) { + gst_buffer_unref (nuv->mpeg_buffer); + nuv->mpeg_buffer = NULL; + } + + g_free (nuv->h); + nuv->h = NULL; + + g_free (nuv->eh); + nuv->eh = NULL; + + g_free (nuv->fh); + nuv->fh = NULL; +} + +static void +gst_nuv_demux_destoy_src_pad (GstNuvDemux * nuv) +{ + if (nuv->src_video_pad) { + gst_element_remove_pad (GST_ELEMENT (nuv), nuv->src_video_pad); + nuv->src_video_pad = NULL; + } + + if (nuv->src_audio_pad) { + gst_element_remove_pad (GST_ELEMENT (nuv), nuv->src_audio_pad); + nuv->src_audio_pad = NULL; + } +} + +static GstStateChangeReturn +gst_nuv_demux_change_state (GstElement * element, GstStateChange transition) +{ + GstStateChangeReturn ret; + + switch (transition) { + case GST_STATE_CHANGE_READY_TO_PAUSED: + break; + default: + break; + } + + ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition); + if (ret == GST_STATE_CHANGE_FAILURE) + goto done; + + switch (transition) { + case GST_STATE_CHANGE_PAUSED_TO_READY: + gst_nuv_demux_destoy_src_pad (GST_NUV_DEMUX (element)); + gst_nuv_demux_reset (GST_NUV_DEMUX (element)); + break; + default: + break; + } + +done: + return ret; +} + +static gboolean +plugin_init (GstPlugin * plugin) +{ +#ifdef ENABLE_NLS + setlocale (LC_ALL, ""); + bindtextdomain (GETTEXT_PACKAGE, LOCALEDIR); +#endif /* ENABLE_NLS */ + + if (!gst_element_register (plugin, "nuvdemux", GST_RANK_SECONDARY, + GST_TYPE_NUV_DEMUX)) { + return FALSE; + } + return TRUE; +} + +GST_PLUGIN_DEFINE (GST_VERSION_MAJOR, + GST_VERSION_MINOR, + "nuvdemux", + "Demuxes and muxes audio and video", + plugin_init, VERSION, "LGPL", "NuvDemux", "") diff --git a/gst/nuvdemux/gstnuvdemux.h b/gst/nuvdemux/gstnuvdemux.h new file mode 100644 index 00000000..56da9ef8 --- /dev/null +++ b/gst/nuvdemux/gstnuvdemux.h @@ -0,0 +1,173 @@ +/* GStreamer + * Copyright (C) <2006> Renato Araujo Oliveira Filho <renato.filho@indt.org.br> + * Rosfran Borges <rosfran.borges@indt.org.br> + * + * 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., 59 Temple Place - Suite 330, + * Boston, MA 02111-1307, USA. + */ + +#ifndef __GST_NUV_DEMUX_H__ +#define __GST_NUV_DEMUX_H__ + +#include <gst/gst.h> + +#include <gst/base/gstadapter.h> + +G_BEGIN_DECLS + +#define GST_TYPE_NUV_DEMUX \ + (gst_nuv_demux_get_type ()) +#define GST_NUV_DEMUX(obj) \ + (G_TYPE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_NUV_DEMUX, GstNuvDemux)) +#define GST_NUV_DEMUX_CLASS(klass) \ + (G_TYPE_CHECK_CLASS_CAST ((klass), GST_TYPE_NUV_DEMUX, GstNuvDemuxClass)) +#define GST_IS_NUV_DEMUX(obj) \ + (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GST_TYPE_NUV_DEMUX)) +#define GST_IS_NUV_DEMUX_CLASS(klass) \ + (G_TYPE_CHECK_CLASS_TYPE ((klass), GST_TYPE_NUV_DEMUX)) + + +/* */ +typedef struct +{ + gchar id[12]; /* "NuppelVideo\0" or "MythTVVideo\0" */ + gchar version[5]; /* "x.xx\0" */ + + gint i_width; + gint i_height; + gint i_width_desired; + gint i_height_desired; + + gchar i_mode; /* P progressive, I interlaced */ + + gdouble d_aspect; /* 1.0 squared pixel */ + gdouble d_fps; + + gint i_video_blocks; /* 0 no video, -1 unknown */ + gint i_audio_blocks; + gint i_text_blocks; + + gint i_keyframe_distance; + +} nuv_header; + +typedef struct +{ + gchar i_type; /* A: audio, V: video, S: sync; T: test + R: Seekpoint (string:RTjjjjjjjj) + D: Extra data for codec */ + gchar i_compression; /* V: 0 uncompressed + 1 RTJpeg + 2 RTJpeg+lzo + N black frame + L copy last + A: 0 uncompressed (44100 1-bits, 2ch) + 1 lzo + 2 layer 2 + 3 layer 3 + F flac + S shorten + N null frame loudless + L copy last + S: B audio and vdeo sync point + A audio sync info (timecode == effective + dsp frequency*100) + V next video sync (timecode == next video + frame num) + S audio,video,text correlation */ + gchar i_keyframe; /* 0 keyframe, else no no key frame */ + guint8 i_filters; /* 0x01: gauss 5 pixel (8,2,2,2,2)/16 + 0x02: gauss 5 pixel (8,1,1,1,1)/12 + 0x04: cartoon filter */ + + guint32 i_timecode; /* ms */ + + guint32 i_length; /* V,A,T: length of following data + S: length of packet correl */ +} nuv_frame_header; + +/* FIXME Not sure of this one */ +typedef struct +{ + gint i_version; + guint32 i_video_fcc; + + guint32 i_audio_fcc; + gint i_audio_sample_rate; + gint i_audio_bits_per_sample; + gint i_audio_channels; + gint i_audio_compression_ratio; + gint i_audio_quality; + gint i_rtjpeg_quality; + gint i_rtjpeg_luma_filter; + gint i_rtjpeg_chroma_filter; + gint i_lavc_bitrate; + gint i_lavc_qmin; + gint i_lavc_qmax; + gint i_lavc_maxqdiff; + gint64 i_seekable_offset; + gint64 i_keyframe_adjust_offset; + +} nuv_extended_header; + +typedef enum { + GST_NUV_DEMUX_START, + GST_NUV_DEMUX_HEADER_DATA, + GST_NUV_DEMUX_EXTRA_DATA, + GST_NUV_DEMUX_MPEG_DATA, + GST_NUV_DEMUX_EXTEND_HEADER, + GST_NUV_DEMUX_EXTEND_HEADER_DATA, + GST_NUV_DEMUX_FRAME_HEADER, + GST_NUV_DEMUX_MOVI, + GST_NUV_DEMUX_INVALID_DATA +} GstNuvDemuxState; + +typedef struct _GstNuvDemux { + GstElement parent; + + guint mode; + GstAdapter *adapter; + guint64 video_offset; + guint64 audio_offset; + + /* pads */ + GstPad *sinkpad; + GstPad *src_video_pad; + GstPad *src_audio_pad; + gboolean first_video; + gboolean first_audio; + + /* NUV decoding state */ + GstNuvDemuxState state; + guint64 offset; + + /* Mpeg ExtraData */ + guint64 mpeg_data_size; + GstBuffer *mpeg_buffer; + + nuv_header *h; + nuv_extended_header *eh; + nuv_frame_header *fh; +} GstNuvDemux; + +typedef struct _GstNuvDemuxClass { + GstElementClass parent_class; +} GstNuvDemuxClass; + +GType gst_nuv_demux_get_type (void); + +G_END_DECLS + +#endif /* __GST_NUV_DEMUX_H__ */ |