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-rw-r--r--src/demuxers/demux_smjpeg.c563
1 files changed, 563 insertions, 0 deletions
diff --git a/src/demuxers/demux_smjpeg.c b/src/demuxers/demux_smjpeg.c
new file mode 100644
index 000000000..860cf48a2
--- /dev/null
+++ b/src/demuxers/demux_smjpeg.c
@@ -0,0 +1,563 @@
+/*
+ * Copyright (C) 2000-2002 the xine project
+ *
+ * This file is part of xine, a free video player.
+ *
+ * xine is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * xine 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
+ *
+ * SMJPEG File Demuxer by Mike Melanson (melanson@pcisys.net)
+ * For more information on the SMJPEG file format, visit:
+ * http://www.lokigames.com/development/smjpeg.php3
+ *
+ * $Id: demux_smjpeg.c,v 1.1 2002/07/07 01:24:40 tmmm Exp $
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <stdio.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <pthread.h>
+#include <string.h>
+#include <stdlib.h>
+
+#include "xine_internal.h"
+#include "xineutils.h"
+#include "compat.h"
+#include "demux.h"
+#include "bswap.h"
+
+#define BE_16(x) (be2me_16(*(unsigned short *)(x)))
+#define BE_32(x) (be2me_32(*(unsigned int *)(x)))
+
+#define FOURCC_TAG( ch0, ch1, ch2, ch3 ) \
+ ( (long)(unsigned char)(ch3) | ( (long)(unsigned char)(ch2) << 8 ) | \
+ ( (long)(unsigned char)(ch1) << 16 ) | ( (long)(unsigned char)(ch0) << 24 ) )
+
+#define _TXT_TAG FOURCC_TAG('_', 'T', 'X', 'T')
+#define _SND_TAG FOURCC_TAG('_', 'S', 'N', 'D')
+#define _VID_TAG FOURCC_TAG('_', 'V', 'I', 'D')
+#define HEND_TAG FOURCC_TAG('H', 'E', 'N', 'D')
+#define sndD_TAG FOURCC_TAG('s', 'n', 'd', 'D')
+#define vidD_TAG FOURCC_TAG('v', 'i', 'd', 'D')
+
+#define VALID_ENDS "mjpg"
+
+#define SMJPEG_SIGNATURE_SIZE 8
+/* 16 is the max size of a header chunk (the video header) */
+#define SMJPEG_VIDEO_HEADER_SIZE 16
+#define SMJPEG_AUDIO_HEADER_SIZE 12
+#define SMJPEG_HEADER_CHUNK_MAX_SIZE SMJPEG_VIDEO_HEADER_SIZE
+#define SMJPEG_CHUNK_PREAMBLE_SIZE 12
+
+typedef struct {
+
+ demux_plugin_t demux_plugin;
+
+ xine_t *xine;
+
+ config_values_t *config;
+
+ fifo_buffer_t *video_fifo;
+ fifo_buffer_t *audio_fifo;
+
+ input_plugin_t *input;
+
+ pthread_t thread;
+ int thread_running;
+ pthread_mutex_t mutex;
+ int send_end_buffers;
+
+ off_t input_length;
+ int status;
+
+ /* when this flag is set, demuxer only dispatches audio samples until it
+ * encounters a video keyframe, then it starts sending every frame again */
+ int waiting_for_keyframe;
+
+ /* video information */
+ unsigned int video_type;
+ xine_bmiheader bih;
+
+ /* audio information */
+ unsigned int audio_codec;
+ unsigned int audio_type;
+ unsigned int audio_sample_rate;
+ unsigned int audio_bits;
+ unsigned int audio_channels;
+
+ /* playback information */
+ unsigned int duration; /* duration in milliseconds */
+} demux_smjpeg_t;
+
+static void *demux_smjpeg_loop (void *this_gen) {
+
+ demux_smjpeg_t *this = (demux_smjpeg_t *) this_gen;
+ buf_element_t *buf = NULL;
+ unsigned int chunk_tag;
+ int64_t pts;
+ unsigned int remaining_sample_bytes;
+ unsigned char preamble[SMJPEG_CHUNK_PREAMBLE_SIZE];
+ off_t current_file_pos;
+
+ pthread_mutex_lock( &this->mutex );
+
+ /* do-while needed to seek after demux finished */
+ do {
+ /* main demuxer loop */
+ while (this->status == DEMUX_OK) {
+
+ /* someone may want to interrupt us */
+ pthread_mutex_unlock( &this->mutex );
+ pthread_mutex_lock( &this->mutex );
+
+ /* load the next sample */
+ current_file_pos = this->input->get_current_pos(this->input);
+ if (this->input->read(this->input, preamble,
+ SMJPEG_CHUNK_PREAMBLE_SIZE) != SMJPEG_CHUNK_PREAMBLE_SIZE) {
+ this->status = DEMUX_FINISHED;
+ return NULL;
+ }
+
+ chunk_tag = BE_32(&preamble[0]);
+ remaining_sample_bytes = BE_32(&preamble[8]);
+
+ /*
+ * Each sample has an absolute timestamp in millisecond units:
+ *
+ * xine pts timestamp (ms)
+ * -------- = --------------
+ * 90000 1000
+ *
+ * therefore, xine pts = timestamp * 90000 / 1000 => timestamp * 90
+ */
+ pts = BE_32(&preamble[4]);
+ pts *= 90;
+
+ /* break up the data into packets and dispatch them */
+ if (((chunk_tag == sndD_TAG) && this->audio_fifo && this->audio_type) ||
+ (chunk_tag == vidD_TAG)) {
+
+ while (remaining_sample_bytes) {
+ if (chunk_tag == sndD_TAG) {
+ buf = this->audio_fifo->buffer_pool_alloc (this->audio_fifo);
+ buf->type = this->audio_type;
+ buf->decoder_info[1] = this->audio_sample_rate;
+ buf->decoder_info[2] = this->audio_bits;
+ buf->decoder_info[3] = this->audio_channels;
+ } else {
+ buf = this->video_fifo->buffer_pool_alloc (this->video_fifo);
+ buf->type = this->video_type;
+ }
+
+ buf->content = buf->mem;
+ buf->input_pos = current_file_pos;
+ buf->input_length = this->input_length;
+ buf->input_time = pts / 90000;
+ buf->pts = pts;
+ buf->decoder_flags = 0;
+
+ if (remaining_sample_bytes > buf->max_size)
+ buf->size = buf->max_size;
+ else
+ buf->size = remaining_sample_bytes;
+ remaining_sample_bytes -= buf->size;
+
+ if (this->input->read(this->input, buf->content, buf->size) !=
+ buf->size) {
+ this->status = DEMUX_FINISHED;
+ break;
+ }
+
+ if (!remaining_sample_bytes)
+ buf->decoder_flags |= BUF_FLAG_FRAME_END;
+
+ if (chunk_tag == sndD_TAG)
+ this->audio_fifo->put(this->audio_fifo, buf);
+ else
+ this->video_fifo->put(this->video_fifo, buf);
+ }
+
+ } else {
+
+ /* skip the chunk if it can't be handled */
+ this->input->seek(this->input, remaining_sample_bytes, SEEK_CUR);
+
+ }
+
+ }
+
+#if 1
+ /* wait before sending end buffers: user might want to do a new seek */
+ while(this->send_end_buffers && this->video_fifo->size(this->video_fifo) &&
+ this->status != DEMUX_OK){
+ pthread_mutex_unlock( &this->mutex );
+ xine_usec_sleep(100000);
+ pthread_mutex_lock( &this->mutex );
+ }
+#endif
+
+ } while (this->status == DEMUX_OK);
+
+ printf ("demux_smjpeg: demux loop finished (status: %d)\n",
+ this->status);
+
+ this->status = DEMUX_FINISHED;
+
+ if (this->send_end_buffers) {
+ xine_demux_control_end(this->xine, BUF_FLAG_END_STREAM);
+ }
+
+ this->thread_running = 0;
+ pthread_mutex_unlock(&this->mutex);
+ return NULL;
+}
+
+static int demux_smjpeg_open(demux_plugin_t *this_gen, input_plugin_t *input,
+ int stage) {
+ demux_smjpeg_t *this = (demux_smjpeg_t *) this_gen;
+ char signature[8];
+
+ this->input = input;
+
+ switch(stage) {
+ case STAGE_BY_CONTENT: {
+ if ((input->get_capabilities(input) & INPUT_CAP_SEEKABLE) == 0)
+ return DEMUX_CANNOT_HANDLE;
+
+ input->seek(input, 0, SEEK_SET);
+ if (input->read(input, signature, SMJPEG_SIGNATURE_SIZE) !=
+ SMJPEG_SIGNATURE_SIZE)
+ return DEMUX_CANNOT_HANDLE;
+
+ /* check for the SMJPEG signature */
+ if ((signature[0] == 0x00) &&
+ (signature[1] == 0x0A) &&
+ (signature[2] == 'S') &&
+ (signature[3] == 'M') &&
+ (signature[4] == 'J') &&
+ (signature[5] == 'P') &&
+ (signature[6] == 'E') &&
+ (signature[7] == 'G'))
+ return DEMUX_CAN_HANDLE;
+
+ return DEMUX_CANNOT_HANDLE;
+ }
+ break;
+
+ case STAGE_BY_EXTENSION: {
+ char *suffix;
+ char *MRL;
+ char *m, *valid_ends;
+
+ MRL = input->get_mrl (input);
+
+ suffix = strrchr(MRL, '.');
+
+ if(!suffix)
+ return DEMUX_CANNOT_HANDLE;
+
+ xine_strdupa(valid_ends, (this->config->register_string(this->config,
+ "mrl.ends_smjpeg", VALID_ENDS,
+ _("valid mrls ending for smjpeg demuxer"),
+ NULL, NULL, NULL)));
+ while((m = xine_strsep(&valid_ends, ",")) != NULL) {
+
+ while(*m == ' ' || *m == '\t') m++;
+
+ if(!strcasecmp((suffix + 1), m)) {
+ this->input = input;
+ return DEMUX_CAN_HANDLE;
+ }
+ }
+ return DEMUX_CANNOT_HANDLE;
+ }
+ break;
+
+ default:
+ return DEMUX_CANNOT_HANDLE;
+ break;
+
+ }
+
+ return DEMUX_CANNOT_HANDLE;
+}
+
+static int demux_smjpeg_start (demux_plugin_t *this_gen,
+ fifo_buffer_t *video_fifo,
+ fifo_buffer_t *audio_fifo,
+ off_t start_pos, int start_time) {
+
+ demux_smjpeg_t *this = (demux_smjpeg_t *) this_gen;
+ unsigned int chunk_tag;
+ unsigned char header_chunk[SMJPEG_HEADER_CHUNK_MAX_SIZE];
+ buf_element_t *buf;
+ int err;
+
+ pthread_mutex_lock(&this->mutex);
+
+ /* if thread is not running, initialize demuxer */
+ if (!this->thread_running) {
+ this->video_fifo = video_fifo;
+ this->audio_fifo = audio_fifo;
+
+ /* initial state: no video and no audio (until headers found) */
+ this->video_type = this->audio_type = 0;
+ this->input_length = this->input->get_length (this->input);
+
+ /* jump over the signature and version to the duration */
+ this->input->seek(this->input, 12, SEEK_SET);
+ if (this->input->read(this->input, header_chunk, 4) != 4) {
+ this->status = DEMUX_FINISHED;
+ return this->status;
+ }
+ this->duration = BE_32(&header_chunk[0]);
+
+ /* traverse the header chunks until the HEND tag is found */
+ chunk_tag = 0;
+ while (chunk_tag != HEND_TAG) {
+
+ if (this->input->read(this->input, header_chunk, 4) != 4) {
+ this->status = DEMUX_FINISHED;
+ return this->status;
+ }
+ chunk_tag = BE_32(&header_chunk[0]);
+
+ switch(chunk_tag) {
+
+ case HEND_TAG:
+ /* this indicates the end of the header; do nothing and fall
+ * out of the loop on the next iteration */
+ break;
+
+ case _VID_TAG:
+ if (this->input->read(this->input, header_chunk,
+ SMJPEG_VIDEO_HEADER_SIZE) != SMJPEG_VIDEO_HEADER_SIZE) {
+ this->status = DEMUX_FINISHED;
+ return this->status;
+ }
+
+ this->bih.biWidth = BE_16(&header_chunk[8]);
+ this->bih.biHeight = BE_16(&header_chunk[10]);
+ this->bih.biCompression = *(uint32_t *)&header_chunk[12];
+ this->video_type = fourcc_to_buf_video(this->bih.biCompression);
+ break;
+
+ case _SND_TAG:
+ if (this->input->read(this->input, header_chunk,
+ SMJPEG_AUDIO_HEADER_SIZE) != SMJPEG_AUDIO_HEADER_SIZE) {
+ this->status = DEMUX_FINISHED;
+ return this->status;
+ }
+
+ this->audio_sample_rate = BE_16(&header_chunk[4]);
+ this->audio_bits = header_chunk[6];
+ this->audio_channels = header_chunk[7];
+ this->audio_codec = *(uint32_t *)&header_chunk[8];
+ this->audio_type = formattag_to_buf_audio(this->audio_codec);
+ break;
+
+ default:
+ /* for all other chunk types, read the length and skip the rest
+ * of the chunk */
+ if (this->input->read(this->input, header_chunk, 4) != 4) {
+ this->status = DEMUX_FINISHED;
+ return this->status;
+ }
+ this->input->seek(this->input, BE_32(&header_chunk[0]), SEEK_CUR);
+ break;
+ }
+
+ }
+
+this->video_type = BUF_VIDEO_JPEG;
+ if(!this->video_type)
+ xine_report_codec(this->xine, XINE_CODEC_VIDEO,
+ this->bih.biCompression, 0, 0);
+
+ if(!this->audio_type && this->audio_codec)
+ xine_report_codec( this->xine, XINE_CODEC_AUDIO,
+ this->audio_codec, 0, 0);
+
+ /* print vital stats */
+ xine_log (this->xine, XINE_LOG_FORMAT,
+ _("demux_smjpeg: SMJPEG file, running time: %d min, %d sec\n"),
+ this->duration / 1000 / 60,
+ this->duration / 1000 % 60);
+ if (this->video_type)
+ xine_log (this->xine, XINE_LOG_FORMAT,
+ _("demux_smjpeg: %c%c%c%c video @ %dx%d\n"),
+ *((char *)&this->bih.biCompression + 0),
+ *((char *)&this->bih.biCompression + 1),
+ *((char *)&this->bih.biCompression + 2),
+ *((char *)&this->bih.biCompression + 3),
+ this->bih.biWidth,
+ this->bih.biHeight);
+ if (this->audio_type)
+ xine_log (this->xine, XINE_LOG_FORMAT,
+ _("demux_smjpeg: '%c%c%c%c' audio @ %d Hz, %d bits, %d channel%c\n"),
+ *((char *)&this->audio_codec + 0),
+ *((char *)&this->audio_codec + 1),
+ *((char *)&this->audio_codec + 2),
+ *((char *)&this->audio_codec + 3),
+ this->audio_sample_rate,
+ this->audio_bits,
+ this->audio_channels,
+ (this->audio_channels == 1) ? 0 : 's');
+
+ /* send start buffers */
+ xine_demux_control_start(this->xine);
+
+ /* send init info to decoders */
+ buf = this->video_fifo->buffer_pool_alloc (this->video_fifo);
+ buf->content = buf->mem;
+ buf->decoder_flags = BUF_FLAG_HEADER;
+ buf->decoder_info[0] = 0;
+ buf->decoder_info[1] = 3000; /* initial video_step */
+ memcpy(buf->content, &this->bih, sizeof(this->bih));
+ buf->size = sizeof(this->bih);
+ buf->type = this->video_type;
+ this->video_fifo->put (this->video_fifo, buf);
+
+ if (this->audio_fifo && this->audio_type) {
+ buf = this->audio_fifo->buffer_pool_alloc (this->audio_fifo);
+ buf->content = buf->mem;
+ buf->type = this->audio_type;
+ buf->decoder_flags = BUF_FLAG_HEADER;
+ buf->decoder_info[0] = 0;
+ buf->decoder_info[1] = this->audio_sample_rate;
+ buf->decoder_info[2] = this->audio_bits;
+ buf->decoder_info[3] = this->audio_channels;
+ this->audio_fifo->put (this->audio_fifo, buf);
+ }
+
+ this->status = DEMUX_OK;
+ this->send_end_buffers = 1;
+ this->thread_running = 1;
+
+ if ((err = pthread_create (&this->thread, NULL, demux_smjpeg_loop, this)) != 0) {
+ printf ("demux_qt: can't create new thread (%s)\n", strerror(err));
+ abort();
+ }
+
+
+ }
+
+ pthread_mutex_unlock(&this->mutex);
+
+ return this->status;
+}
+
+static int demux_smjpeg_seek (demux_plugin_t *this_gen,
+ off_t start_pos, int start_time) {
+
+ /* SMJPEG files consist of a series of keyframes, but there is no
+ * master index; in order to effectively seek, an index would have to be
+ * built by traversing the file in advance. Therefore, don't bother
+ * implementing the seek function. */
+
+ return 0;
+}
+
+static void demux_smjpeg_stop (demux_plugin_t *this_gen) {
+
+ demux_smjpeg_t *this = (demux_smjpeg_t *) this_gen;
+ void *p;
+
+ pthread_mutex_lock( &this->mutex );
+
+ if (!this->thread_running) {
+ pthread_mutex_unlock( &this->mutex );
+ return;
+ }
+
+ this->send_end_buffers = 0;
+ this->status = DEMUX_FINISHED;
+
+ pthread_mutex_unlock( &this->mutex );
+ pthread_join (this->thread, &p);
+
+ xine_demux_flush_engine(this->xine);
+
+ xine_demux_control_end(this->xine, BUF_FLAG_END_USER);
+}
+
+static void demux_smjpeg_close (demux_plugin_t *this_gen) {
+ demux_smjpeg_t *this = (demux_smjpeg_t *) this_gen;
+
+ pthread_mutex_destroy (&this->mutex);
+ free(this);
+}
+
+static int demux_smjpeg_get_status (demux_plugin_t *this_gen) {
+ demux_smjpeg_t *this = (demux_smjpeg_t *) this_gen;
+
+ return this->status;
+}
+
+static char *demux_smjpeg_get_id(void) {
+ return "SMJPEG";
+}
+
+static int demux_smjpeg_get_stream_length (demux_plugin_t *this_gen) {
+ demux_smjpeg_t *this = (demux_smjpeg_t *) this_gen;
+
+ /* return total running time in seconds */
+ return this->duration / 1000;
+}
+
+static char *demux_smjpeg_get_mimetypes(void) {
+ return NULL;
+}
+
+demux_plugin_t *init_demuxer_plugin(int iface, xine_t *xine) {
+ demux_smjpeg_t *this;
+
+ if (iface != 10) {
+ printf (_("demux_smjpeg: plugin doesn't support plugin API version %d.\n"
+ " this means there's a version mismatch between xine and this "
+ " demuxer plugin. Installing current demux plugins should help.\n"),
+ iface);
+ return NULL;
+ }
+
+ this = (demux_smjpeg_t *) xine_xmalloc(sizeof(demux_smjpeg_t));
+ this->config = xine->config;
+ this->xine = xine;
+
+ (void *) this->config->register_string(this->config,
+ "mrl.ends_film", VALID_ENDS,
+ _("valid mrls ending for film demuxer"),
+ NULL, NULL, NULL);
+
+ this->demux_plugin.interface_version = DEMUXER_PLUGIN_IFACE_VERSION;
+ this->demux_plugin.open = demux_smjpeg_open;
+ this->demux_plugin.start = demux_smjpeg_start;
+ this->demux_plugin.seek = demux_smjpeg_seek;
+ this->demux_plugin.stop = demux_smjpeg_stop;
+ this->demux_plugin.close = demux_smjpeg_close;
+ this->demux_plugin.get_status = demux_smjpeg_get_status;
+ this->demux_plugin.get_identifier = demux_smjpeg_get_id;
+ this->demux_plugin.get_stream_length = demux_smjpeg_get_stream_length;
+ this->demux_plugin.get_mimetypes = demux_smjpeg_get_mimetypes;
+
+ this->status = DEMUX_FINISHED;
+ pthread_mutex_init(&this->mutex, NULL);
+
+ return &this->demux_plugin;
+}
+
generated by cgit v1.2.3 (git 2.25.1) at 2025-05-28 08:40:43 +0000