diff options
Diffstat (limited to 'gst/nuvdemux/gstnuvdemux.c')
| -rw-r--r-- | gst/nuvdemux/gstnuvdemux.c | 940 |
1 files changed, 0 insertions, 940 deletions
diff --git a/gst/nuvdemux/gstnuvdemux.c b/gst/nuvdemux/gstnuvdemux.c deleted file mode 100644 index 88968f0a1..000000000 --- a/gst/nuvdemux/gstnuvdemux.c +++ /dev/null @@ -1,940 +0,0 @@ -/* GStreamer NUV demuxer - * 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., 51 Franklin St, Fifth Floor, - * Boston, MA 02110-1301, USA. - */ -/* Element-Checklist-Version: 5 */ - -/** - * SECTION:element-nuvdemux - * @see_also: mythtvsrc - * - * Demuxes MythTVs NuppelVideo .nuv file into raw or compressed audio and/or - * video streams. - * - * This element currently only supports pull-based scheduling. - * - * <refsect2> - * <title>Example launch line</title> - * |[ - * gst-launch-1.0 filesrc test.nuv ! nuvdemux name=demux demux.audio_00 ! decodebin ! audioconvert ! audioresample ! autoaudiosink demux.video_00 ! queue ! decodebin ! videoconvert ! videoscale ! autovideosink - * ]| 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. - * </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 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((gdouble* ) 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_static_pad_template (element_class, - &audio_src_template); - gst_element_class_add_static_pad_template (element_class, - &video_src_template); - gst_element_class_add_static_pad_template (element_class, &sink_template); - gst_element_class_set_static_metadata (element_class, "Nuv demuxer", - "Codec/Demuxer", - "Demultiplex a MythTV NuppleVideo .nuv file into audio and video", - "Renato Araujo Oliveira Filho <renato.filho@indt.org.br>," - "Rosfran Borges <rosfran.borges@indt.org.br>"); -} - -static void -gst_nuv_demux_class_init (GstNuvDemuxClass * klass) -{ - GstElementClass *gstelement_class = GST_ELEMENT_CLASS (klass); - GObjectClass *gobject_class = (GObjectClass *) klass; - - gobject_class->finalize = gst_nuv_demux_finalize; - - gstelement_class->change_state = - GST_DEBUG_FUNCPTR (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) { - g_object_unref (nuv->adapter); - nuv->adapter = NULL; - } - G_OBJECT_CLASS (parent_class)->finalize (object); -} - -/***************************************************************************** - * Utils functions - *****************************************************************************/ - -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; - nuv_header *h; - - res = gst_nuv_demux_read_bytes (nuv, 72, TRUE, &buffer); - if (res != GST_FLOW_OK) - return res; - - 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=%d l=%d", - 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=%" - G_GINT64_FORMAT " keyfao=%" G_GINT64_FORMAT, 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_pad_set_active (nuv->src_video_pad, TRUE); - 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_pad_set_active (nuv->src_audio_pad, TRUE); - 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; - - if (h->i_length > 0) { - ret = gst_nuv_demux_read_bytes (nuv, h->i_length, TRUE, &buf); - if (ret != GST_FLOW_OK) - return ret; - - if (h->i_timecode > 0) - GST_BUFFER_TIMESTAMP (buf) = h->i_timecode * GST_MSECOND; - } - - - switch (h->i_type) { - case 'V': - { - if (!buf) - break; - - 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': - { - if (!buf) - break; - - 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, - h->i_timecode)); - 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; - } - } - default: - if (buf != NULL) - gst_buffer_unref (buf); - - 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 */ - nuv->mpeg_buffer = NULL; - 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') { - nuv_frame_header *h = NULL; - - gst_buffer_unref (buf); - buf = 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; - GST_ELEMENT_ERROR (nuv, STREAM, DEMUX, (NULL), - ("Unsupported extended header (0x%02x)", buf->data[0])); - gst_buffer_unref (buf); - 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; - 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 (res == GST_FLOW_UNEXPECTED) { - gst_nuv_demux_send_eos (nuv); - } else if (res == GST_FLOW_NOT_LINKED || res < GST_FLOW_UNEXPECTED) { - GST_ELEMENT_FLOW_ERROR (nuv, 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_FLUSHING; - } - } 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; - if (nuv->adapter != NULL) { - g_object_unref (nuv->adapter); - nuv->adapter = NULL; - } - res = gst_pad_activate_pull (sinkpad, TRUE); - } else { - nuv->mode = 1; - if (!nuv->adapter) { - 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, - NULL); - } 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) -{ - GST_DEBUG_CATEGORY_INIT (nuvdemux_debug, "nuvdemux", - 0, "Demuxer for NUV streams"); - -#ifdef ENABLE_NLS - GST_DEBUG ("binding text domain %s to locale dir %s", GETTEXT_PACKAGE, - LOCALEDIR); - 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 MythTV NuppelVideo files", - plugin_init, VERSION, GST_LICENSE, GST_PACKAGE_NAME, GST_PACKAGE_ORIGIN) |