| /* $Id$ */ |
| /* |
| * Copyright (C) 2008-2011 Teluu Inc. (http://www.teluu.com) |
| * |
| * This program 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. |
| * |
| * This program 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 |
| */ |
| |
| /** |
| * Default file player/writer buffer size. |
| */ |
| #include <pjmedia/avi_stream.h> |
| #include <pjmedia/avi.h> |
| #include <pjmedia/errno.h> |
| #include <pjmedia/wave.h> |
| #include <pj/assert.h> |
| #include <pj/file_access.h> |
| #include <pj/file_io.h> |
| #include <pj/log.h> |
| #include <pj/pool.h> |
| #include <pj/string.h> |
| |
| |
| #if defined(PJMEDIA_HAS_VIDEO) && (PJMEDIA_HAS_VIDEO != 0) |
| |
| |
| #define THIS_FILE "avi_player.c" |
| |
| #define AVIF_MUSTUSEINDEX 0x00000020 |
| #define AVIF_ISINTERLEAVED 0x00000100 |
| #define AVISF_DISABLED 0x00000001 |
| #define AVISF_VIDEO_PALCHANGES 0x00010000 |
| |
| #define AVI_EOF 0xFFEEFFEE |
| |
| #define COMPARE_TAG(doc_tag, tag) (doc_tag == *((pj_uint32_t *)avi_tags[tag])) |
| |
| #define SIGNATURE PJMEDIA_SIG_PORT_VID_AVI_PLAYER |
| |
| #define VIDEO_CLOCK_RATE 90000 |
| |
| #if 0 |
| # define TRACE_(x) PJ_LOG(4,x) |
| #else |
| # define TRACE_(x) |
| #endif |
| |
| #if defined(PJ_IS_BIG_ENDIAN) && PJ_IS_BIG_ENDIAN!=0 |
| static void data_to_host(void *data, pj_uint8_t bits, unsigned count) |
| { |
| unsigned i; |
| |
| count /= (bits == 32? 4 : 2); |
| |
| if (bits == 32) { |
| pj_int32_t *data32 = (pj_int32_t *)data; |
| for (i=0; i<count; ++i) |
| data32[i] = pj_swap32(data32[i]); |
| } else { |
| pj_int16_t *data16 = (pj_int16_t *)data; |
| for (i=0; i<count; ++i) |
| data16[i] = pj_swap16(data16[i]); |
| } |
| |
| } |
| static void data_to_host2(void *data, pj_uint8_t nsizes, |
| pj_uint8_t *sizes) |
| { |
| unsigned i; |
| pj_int8_t *datap = (pj_int8_t *)data; |
| for (i = 0; i < nsizes; i++) { |
| data_to_host(datap, 32, sizes[i]); |
| datap += sizes[i++]; |
| if (i >= nsizes) |
| break; |
| data_to_host(datap, 16, sizes[i]); |
| datap += sizes[i]; |
| } |
| } |
| #else |
| # define data_to_host(data, bits, count) |
| # define data_to_host2(data, nsizes, sizes) |
| #endif |
| |
| typedef struct avi_fmt_info |
| { |
| pjmedia_format_id fmt_id; |
| pjmedia_format_id eff_fmt_id; |
| } avi_fmt_info; |
| |
| static avi_fmt_info avi_fmts[] = |
| { |
| {PJMEDIA_FORMAT_MJPEG}, {PJMEDIA_FORMAT_H264}, |
| {PJMEDIA_FORMAT_UYVY}, {PJMEDIA_FORMAT_YUY2}, |
| {PJMEDIA_FORMAT_IYUV}, {PJMEDIA_FORMAT_I420}, |
| {PJMEDIA_FORMAT_DIB}, {PJMEDIA_FORMAT_RGB24}, |
| {PJMEDIA_FORMAT_RGB32}, |
| {PJMEDIA_FORMAT_PACK('X','V','I','D'), PJMEDIA_FORMAT_MPEG4}, |
| {PJMEDIA_FORMAT_PACK('x','v','i','d'), PJMEDIA_FORMAT_MPEG4}, |
| {PJMEDIA_FORMAT_PACK('D','I','V','X'), PJMEDIA_FORMAT_MPEG4}, |
| {PJMEDIA_FORMAT_PACK('F','M','P','4'), PJMEDIA_FORMAT_MPEG4}, |
| {PJMEDIA_FORMAT_PACK('D','X','5','0'), PJMEDIA_FORMAT_MPEG4} |
| }; |
| |
| struct pjmedia_avi_streams |
| { |
| unsigned num_streams; |
| pjmedia_port **streams; |
| }; |
| |
| struct avi_reader_port |
| { |
| pjmedia_port base; |
| unsigned stream_id; |
| unsigned options; |
| pjmedia_format_id fmt_id; |
| unsigned usec_per_frame; |
| pj_uint16_t bits_per_sample; |
| pj_bool_t eof; |
| pj_off_t fsize; |
| pj_off_t start_data; |
| pj_uint8_t pad; |
| pj_oshandle_t fd; |
| pj_ssize_t size_left; |
| pj_timestamp next_ts; |
| |
| pj_status_t (*cb)(pjmedia_port*, void*); |
| }; |
| |
| |
| static pj_status_t avi_get_frame(pjmedia_port *this_port, |
| pjmedia_frame *frame); |
| static pj_status_t avi_on_destroy(pjmedia_port *this_port); |
| |
| static struct avi_reader_port *create_avi_port(pj_pool_t *pool) |
| { |
| const pj_str_t name = pj_str("file"); |
| struct avi_reader_port *port; |
| |
| port = PJ_POOL_ZALLOC_T(pool, struct avi_reader_port); |
| if (!port) |
| return NULL; |
| |
| /* Put in default values. |
| * These will be overriden once the file is read. |
| */ |
| pjmedia_port_info_init(&port->base.info, &name, SIGNATURE, |
| 8000, 1, 16, 80); |
| |
| port->fd = (pj_oshandle_t)(pj_ssize_t)-1; |
| port->base.get_frame = &avi_get_frame; |
| port->base.on_destroy = &avi_on_destroy; |
| |
| return port; |
| } |
| |
| #define file_read(fd, data, size) file_read2(fd, data, size, 32) |
| #define file_read2(fd, data, size, bits) file_read3(fd, data, size, bits, NULL) |
| |
| static pj_status_t file_read3(pj_oshandle_t fd, void *data, pj_ssize_t size, |
| pj_uint16_t bits, pj_ssize_t *psz_read) |
| { |
| pj_ssize_t size_read = size, size_to_read = size; |
| pj_status_t status = pj_file_read(fd, data, &size_read); |
| if (status != PJ_SUCCESS) |
| return status; |
| |
| /* Normalize AVI header fields values from little-endian to host |
| * byte order. |
| */ |
| if (bits > 0) |
| data_to_host(data, bits, size_read); |
| |
| if (size_read != size_to_read) { |
| if (psz_read) |
| *psz_read = size_read; |
| return AVI_EOF; |
| } |
| |
| return status; |
| } |
| |
| /* |
| * Create AVI player port. |
| */ |
| PJ_DEF(pj_status_t) |
| pjmedia_avi_player_create_streams(pj_pool_t *pool, |
| const char *filename, |
| unsigned options, |
| pjmedia_avi_streams **p_streams) |
| { |
| pjmedia_avi_hdr avi_hdr; |
| struct avi_reader_port *fport[PJMEDIA_AVI_MAX_NUM_STREAMS]; |
| pj_off_t pos; |
| unsigned i, nstr = 0; |
| pj_status_t status = PJ_SUCCESS; |
| |
| /* Check arguments. */ |
| PJ_ASSERT_RETURN(pool && filename && p_streams, PJ_EINVAL); |
| |
| /* Check the file really exists. */ |
| if (!pj_file_exists(filename)) { |
| return PJ_ENOTFOUND; |
| } |
| |
| /* Create fport instance. */ |
| fport[0] = create_avi_port(pool); |
| if (!fport[0]) { |
| return PJ_ENOMEM; |
| } |
| |
| /* Get the file size. */ |
| fport[0]->fsize = pj_file_size(filename); |
| |
| /* Size must be more than AVI header size */ |
| if (fport[0]->fsize <= sizeof(riff_hdr_t) + sizeof(avih_hdr_t) + |
| sizeof(strl_hdr_t)) |
| { |
| return PJMEDIA_EINVALIMEDIATYPE; |
| } |
| |
| /* Open file. */ |
| status = pj_file_open(pool, filename, PJ_O_RDONLY, &fport[0]->fd); |
| if (status != PJ_SUCCESS) |
| return status; |
| |
| /* Read the RIFF + AVIH header. */ |
| status = file_read(fport[0]->fd, &avi_hdr, |
| sizeof(riff_hdr_t) + sizeof(avih_hdr_t)); |
| if (status != PJ_SUCCESS) |
| goto on_error; |
| |
| /* Validate AVI file. */ |
| if (!COMPARE_TAG(avi_hdr.riff_hdr.riff, PJMEDIA_AVI_RIFF_TAG) || |
| !COMPARE_TAG(avi_hdr.riff_hdr.avi, PJMEDIA_AVI_AVI_TAG) || |
| !COMPARE_TAG(avi_hdr.avih_hdr.list_tag, PJMEDIA_AVI_LIST_TAG) || |
| !COMPARE_TAG(avi_hdr.avih_hdr.hdrl_tag, PJMEDIA_AVI_HDRL_TAG) || |
| !COMPARE_TAG(avi_hdr.avih_hdr.avih, PJMEDIA_AVI_AVIH_TAG)) |
| { |
| status = PJMEDIA_EINVALIMEDIATYPE; |
| goto on_error; |
| } |
| |
| PJ_LOG(5, (THIS_FILE, "The AVI file has %d streams.", |
| avi_hdr.avih_hdr.num_streams)); |
| |
| /* Unsupported AVI format. */ |
| if (avi_hdr.avih_hdr.num_streams > PJMEDIA_AVI_MAX_NUM_STREAMS) { |
| status = PJMEDIA_EAVIUNSUPP; |
| goto on_error; |
| } |
| |
| /** |
| * TODO: Possibly unsupported AVI format. |
| * If you encounter this warning, verify whether the avi player |
| * is working properly. |
| */ |
| if (avi_hdr.avih_hdr.flags & AVIF_MUSTUSEINDEX || |
| avi_hdr.avih_hdr.pad > 1) |
| { |
| PJ_LOG(3, (THIS_FILE, "Warning!!! Possibly unsupported AVI format: " |
| "flags:%d, pad:%d", avi_hdr.avih_hdr.flags, |
| avi_hdr.avih_hdr.pad)); |
| } |
| |
| /* Read the headers of each stream. */ |
| for (i = 0; i < avi_hdr.avih_hdr.num_streams; i++) { |
| pj_size_t elem = 0; |
| pj_ssize_t size_to_read; |
| |
| /* Read strl header */ |
| status = file_read(fport[0]->fd, &avi_hdr.strl_hdr[i], |
| sizeof(strl_hdr_t)); |
| if (status != PJ_SUCCESS) |
| goto on_error; |
| |
| elem = COMPARE_TAG(avi_hdr.strl_hdr[i].data_type, |
| PJMEDIA_AVI_VIDS_TAG) ? |
| sizeof(strf_video_hdr_t) : |
| COMPARE_TAG(avi_hdr.strl_hdr[i].data_type, |
| PJMEDIA_AVI_AUDS_TAG) ? |
| sizeof(strf_audio_hdr_t) : 0; |
| |
| /* Read strf header */ |
| status = file_read2(fport[0]->fd, &avi_hdr.strf_hdr[i], |
| elem, 0); |
| if (status != PJ_SUCCESS) |
| goto on_error; |
| |
| /* Normalize the endian */ |
| if (elem == sizeof(strf_video_hdr_t)) |
| data_to_host2(&avi_hdr.strf_hdr[i], |
| sizeof(strf_video_hdr_sizes)/ |
| sizeof(strf_video_hdr_sizes[0]), |
| strf_video_hdr_sizes); |
| else if (elem == sizeof(strf_audio_hdr_t)) |
| data_to_host2(&avi_hdr.strf_hdr[i], |
| sizeof(strf_audio_hdr_sizes)/ |
| sizeof(strf_audio_hdr_sizes[0]), |
| strf_audio_hdr_sizes); |
| |
| /* Skip the remainder of the header */ |
| size_to_read = avi_hdr.strl_hdr[i].list_sz - (sizeof(strl_hdr_t) - |
| 8) - elem; |
| status = pj_file_setpos(fport[0]->fd, size_to_read, PJ_SEEK_CUR); |
| if (status != PJ_SUCCESS) { |
| goto on_error; |
| } |
| } |
| |
| /* Finish reading the AVIH header */ |
| status = pj_file_setpos(fport[0]->fd, avi_hdr.avih_hdr.list_sz + |
| sizeof(riff_hdr_t) + 8, PJ_SEEK_SET); |
| if (status != PJ_SUCCESS) { |
| goto on_error; |
| } |
| |
| /* Skip any JUNK or LIST INFO until we get MOVI tag */ |
| do { |
| pjmedia_avi_subchunk ch; |
| int read = 0; |
| |
| status = file_read(fport[0]->fd, &ch, sizeof(pjmedia_avi_subchunk)); |
| if (status != PJ_SUCCESS) { |
| goto on_error; |
| } |
| |
| if (COMPARE_TAG(ch.id, PJMEDIA_AVI_LIST_TAG)) |
| { |
| read = 4; |
| status = file_read(fport[0]->fd, &ch, read); |
| if (COMPARE_TAG(ch.id, PJMEDIA_AVI_MOVI_TAG)) |
| break; |
| } |
| |
| status = pj_file_setpos(fport[0]->fd, ch.len-read, PJ_SEEK_CUR); |
| if (status != PJ_SUCCESS) { |
| goto on_error; |
| } |
| } while(1); |
| |
| status = pj_file_getpos(fport[0]->fd, &pos); |
| if (status != PJ_SUCCESS) |
| goto on_error; |
| |
| for (i = 0, nstr = 0; i < avi_hdr.avih_hdr.num_streams; i++) { |
| pjmedia_format_id fmt_id; |
| |
| /* Skip non-audio, non-video, or disabled streams) */ |
| if ((!COMPARE_TAG(avi_hdr.strl_hdr[i].data_type, |
| PJMEDIA_AVI_VIDS_TAG) && |
| !COMPARE_TAG(avi_hdr.strl_hdr[i].data_type, |
| PJMEDIA_AVI_AUDS_TAG)) || |
| avi_hdr.strl_hdr[i].flags & AVISF_DISABLED) |
| { |
| continue; |
| } |
| |
| if (COMPARE_TAG(avi_hdr.strl_hdr[i].data_type, |
| PJMEDIA_AVI_VIDS_TAG)) |
| { |
| int j; |
| |
| if (avi_hdr.strl_hdr[i].flags & AVISF_VIDEO_PALCHANGES) { |
| PJ_LOG(4, (THIS_FILE, "Unsupported video stream")); |
| continue; |
| } |
| |
| fmt_id = avi_hdr.strl_hdr[i].codec; |
| for (j = sizeof(avi_fmts)/sizeof(avi_fmts[0])-1; j >= 0; j--) { |
| /* Check supported video formats here */ |
| if (fmt_id == avi_fmts[j].fmt_id) { |
| if (avi_fmts[j].eff_fmt_id) |
| fmt_id = avi_fmts[j].eff_fmt_id; |
| break; |
| } |
| } |
| |
| if (j < 0) { |
| PJ_LOG(4, (THIS_FILE, "Unsupported video stream")); |
| continue; |
| } |
| } else { |
| /* Check supported audio formats here */ |
| if ((avi_hdr.strl_hdr[i].codec != PJMEDIA_FORMAT_PCM && |
| avi_hdr.strl_hdr[i].codec != PJMEDIA_FORMAT_ALAW && |
| avi_hdr.strl_hdr[i].codec != PJMEDIA_FORMAT_ULAW && |
| avi_hdr.strl_hdr[i].codec != PJMEDIA_WAVE_FMT_TAG_PCM) || |
| avi_hdr.strf_hdr[i].strf_audio_hdr.bits_per_sample != 16) |
| { |
| PJ_LOG(4, (THIS_FILE, "Unsupported audio stream")); |
| continue; |
| } |
| /* Normalize format ID */ |
| fmt_id = avi_hdr.strl_hdr[i].codec; |
| if (avi_hdr.strl_hdr[i].codec == PJMEDIA_WAVE_FMT_TAG_PCM) |
| fmt_id = PJMEDIA_FORMAT_PCM; |
| } |
| |
| if (nstr > 0) { |
| /* Create fport instance. */ |
| fport[nstr] = create_avi_port(pool); |
| if (!fport[nstr]) { |
| status = PJ_ENOMEM; |
| goto on_error; |
| } |
| |
| /* Open file. */ |
| status = pj_file_open(pool, filename, PJ_O_RDONLY, |
| &fport[nstr]->fd); |
| if (status != PJ_SUCCESS) |
| goto on_error; |
| |
| /* Set the file position */ |
| status = pj_file_setpos(fport[nstr]->fd, pos, PJ_SEEK_SET); |
| if (status != PJ_SUCCESS) { |
| goto on_error; |
| } |
| } |
| |
| fport[nstr]->stream_id = i; |
| fport[nstr]->fmt_id = fmt_id; |
| |
| nstr++; |
| } |
| |
| if (nstr == 0) { |
| status = PJMEDIA_EAVIUNSUPP; |
| goto on_error; |
| } |
| |
| for (i = 0; i < nstr; i++) { |
| strl_hdr_t *strl_hdr = &avi_hdr.strl_hdr[fport[i]->stream_id]; |
| |
| /* Initialize */ |
| fport[i]->options = options; |
| fport[i]->fsize = fport[0]->fsize; |
| /* Current file position now points to start of data */ |
| fport[i]->start_data = pos; |
| |
| if (COMPARE_TAG(strl_hdr->data_type, PJMEDIA_AVI_VIDS_TAG)) { |
| strf_video_hdr_t *strf_hdr = |
| &avi_hdr.strf_hdr[fport[i]->stream_id].strf_video_hdr; |
| const pjmedia_video_format_info *vfi; |
| |
| vfi = pjmedia_get_video_format_info( |
| pjmedia_video_format_mgr_instance(), |
| strl_hdr->codec); |
| |
| fport[i]->bits_per_sample = (vfi ? vfi->bpp : 0); |
| fport[i]->usec_per_frame = avi_hdr.avih_hdr.usec_per_frame; |
| pjmedia_format_init_video(&fport[i]->base.info.fmt, |
| fport[i]->fmt_id, |
| strf_hdr->biWidth, |
| strf_hdr->biHeight, |
| strl_hdr->rate, |
| strl_hdr->scale); |
| #if 0 |
| /* The calculation below is wrong. strf_hdr->biSizeImage shows |
| * uncompressed size. Looks like we need to go the ugly way to |
| * get the bitrage: |
| * http://www.virtualdub.org/blog/pivot/entry.php?id=159 |
| */ |
| bps = strf_hdr->biSizeImage * 8 * strl_hdr->rate / strl_hdr->scale; |
| if (bps==0) { |
| /* strf_hdr->biSizeImage may be zero for uncompressed RGB */ |
| bps = strf_hdr->biWidth * strf_hdr->biHeight * |
| strf_hdr->biBitCount * |
| strl_hdr->rate / strl_hdr->scale; |
| } |
| fport[i]->base.info.fmt.det.vid.avg_bps = bps; |
| fport[i]->base.info.fmt.det.vid.max_bps = bps; |
| #endif |
| } else { |
| strf_audio_hdr_t *strf_hdr = |
| &avi_hdr.strf_hdr[fport[i]->stream_id].strf_audio_hdr; |
| |
| fport[i]->bits_per_sample = strf_hdr->bits_per_sample; |
| fport[i]->usec_per_frame = avi_hdr.avih_hdr.usec_per_frame; |
| pjmedia_format_init_audio(&fport[i]->base.info.fmt, |
| fport[i]->fmt_id, |
| strf_hdr->sample_rate, |
| strf_hdr->nchannels, |
| strf_hdr->bits_per_sample, |
| 20000 /* fport[i]->usec_per_frame */, |
| strf_hdr->bytes_per_sec * 8, |
| strf_hdr->bytes_per_sec * 8); |
| } |
| |
| pj_strdup2(pool, &fport[i]->base.info.name, filename); |
| } |
| |
| /* Done. */ |
| *p_streams = pj_pool_alloc(pool, sizeof(pjmedia_avi_streams)); |
| (*p_streams)->num_streams = nstr; |
| (*p_streams)->streams = pj_pool_calloc(pool, (*p_streams)->num_streams, |
| sizeof(pjmedia_port *)); |
| for (i = 0; i < nstr; i++) |
| (*p_streams)->streams[i] = &fport[i]->base; |
| |
| PJ_LOG(4,(THIS_FILE, |
| "AVI file player '%.*s' created with " |
| "%d media ports", |
| (int)fport[0]->base.info.name.slen, |
| fport[0]->base.info.name.ptr, |
| (*p_streams)->num_streams)); |
| |
| return PJ_SUCCESS; |
| |
| on_error: |
| fport[0]->base.on_destroy(&fport[0]->base); |
| for (i = 1; i < nstr; i++) |
| fport[i]->base.on_destroy(&fport[i]->base); |
| if (status == AVI_EOF) |
| return PJMEDIA_EINVALIMEDIATYPE; |
| return status; |
| } |
| |
| PJ_DEF(unsigned) |
| pjmedia_avi_streams_get_num_streams(pjmedia_avi_streams *streams) |
| { |
| pj_assert(streams); |
| return streams->num_streams; |
| } |
| |
| PJ_DEF(pjmedia_avi_stream *) |
| pjmedia_avi_streams_get_stream(pjmedia_avi_streams *streams, |
| unsigned idx) |
| { |
| pj_assert(streams); |
| return (idx >=0 && idx < streams->num_streams ? |
| streams->streams[idx] : NULL); |
| } |
| |
| PJ_DEF(pjmedia_avi_stream *) |
| pjmedia_avi_streams_get_stream_by_media(pjmedia_avi_streams *streams, |
| unsigned start_idx, |
| pjmedia_type media_type) |
| { |
| unsigned i; |
| |
| pj_assert(streams); |
| for (i = start_idx; i < streams->num_streams; i++) |
| if (streams->streams[i]->info.fmt.type == media_type) |
| return streams->streams[i]; |
| return NULL; |
| } |
| |
| |
| /* |
| * Get the data length, in bytes. |
| */ |
| PJ_DEF(pj_ssize_t) pjmedia_avi_stream_get_len(pjmedia_avi_stream *stream) |
| { |
| struct avi_reader_port *fport; |
| |
| /* Sanity check */ |
| PJ_ASSERT_RETURN(stream, -PJ_EINVAL); |
| |
| /* Check that this is really a player port */ |
| PJ_ASSERT_RETURN(stream->info.signature == SIGNATURE, -PJ_EINVALIDOP); |
| |
| fport = (struct avi_reader_port*) stream; |
| |
| return (pj_ssize_t)(fport->fsize - fport->start_data); |
| } |
| |
| |
| /* |
| * Register a callback to be called when the file reading has reached the |
| * end of file. |
| */ |
| PJ_DEF(pj_status_t) |
| pjmedia_avi_stream_set_eof_cb( pjmedia_avi_stream *stream, |
| void *user_data, |
| pj_status_t (*cb)(pjmedia_avi_stream *stream, |
| void *usr_data)) |
| { |
| struct avi_reader_port *fport; |
| |
| /* Sanity check */ |
| PJ_ASSERT_RETURN(stream, -PJ_EINVAL); |
| |
| /* Check that this is really a player port */ |
| PJ_ASSERT_RETURN(stream->info.signature == SIGNATURE, -PJ_EINVALIDOP); |
| |
| fport = (struct avi_reader_port*) stream; |
| |
| fport->base.port_data.pdata = user_data; |
| fport->cb = cb; |
| |
| return PJ_SUCCESS; |
| } |
| |
| |
| /* |
| * Get frame from file. |
| */ |
| static pj_status_t avi_get_frame(pjmedia_port *this_port, |
| pjmedia_frame *frame) |
| { |
| struct avi_reader_port *fport = (struct avi_reader_port*)this_port; |
| pj_status_t status; |
| pj_ssize_t size_read = 0, size_to_read = 0; |
| |
| pj_assert(fport->base.info.signature == SIGNATURE); |
| |
| /* We encountered end of file */ |
| if (fport->eof) { |
| pj_status_t status = PJ_SUCCESS; |
| |
| PJ_LOG(5,(THIS_FILE, "File port %.*s EOF", |
| (int)fport->base.info.name.slen, |
| fport->base.info.name.ptr)); |
| |
| /* Call callback, if any */ |
| if (fport->cb) |
| status = (*fport->cb)(this_port, fport->base.port_data.pdata); |
| |
| /* If callback returns non PJ_SUCCESS or 'no loop' is specified, |
| * return immediately (and don't try to access player port since |
| * it might have been destroyed by the callback). |
| */ |
| if ((status != PJ_SUCCESS) || |
| (fport->options & PJMEDIA_AVI_FILE_NO_LOOP)) |
| { |
| frame->type = PJMEDIA_FRAME_TYPE_NONE; |
| frame->size = 0; |
| return PJ_EEOF; |
| } |
| |
| /* Rewind file */ |
| PJ_LOG(5,(THIS_FILE, "File port %.*s rewinding..", |
| (int)fport->base.info.name.slen, |
| fport->base.info.name.ptr)); |
| fport->eof = PJ_FALSE; |
| pj_file_setpos(fport->fd, fport->start_data, PJ_SEEK_SET); |
| } |
| |
| /* Fill frame buffer. */ |
| size_to_read = frame->size; |
| do { |
| pjmedia_avi_subchunk ch = {0, 0}; |
| char *cid; |
| unsigned stream_id; |
| |
| /* We need to read data from the file past the chunk boundary */ |
| if (fport->size_left > 0 && fport->size_left < size_to_read) { |
| status = file_read3(fport->fd, frame->buf, fport->size_left, |
| fport->bits_per_sample, &size_read); |
| if (status != PJ_SUCCESS) |
| goto on_error2; |
| size_to_read -= fport->size_left; |
| fport->size_left = 0; |
| } |
| |
| /* Read new chunk data */ |
| if (fport->size_left == 0) { |
| pj_off_t pos; |
| pj_file_getpos(fport->fd, &pos); |
| |
| /* Data is padded to the nearest WORD boundary */ |
| if (fport->pad) { |
| status = pj_file_setpos(fport->fd, fport->pad, PJ_SEEK_CUR); |
| fport->pad = 0; |
| } |
| |
| status = file_read(fport->fd, &ch, sizeof(pjmedia_avi_subchunk)); |
| if (status != PJ_SUCCESS) { |
| size_read = 0; |
| goto on_error2; |
| } |
| |
| cid = (char *)&ch.id; |
| if (cid[0] >= '0' && cid[0] <= '9' && |
| cid[1] >= '0' && cid[1] <= '9') |
| { |
| stream_id = (cid[0] - '0') * 10 + (cid[1] - '0'); |
| } else |
| stream_id = 100; |
| fport->pad = (pj_uint8_t)ch.len & 1; |
| |
| TRACE_((THIS_FILE, "Reading movi data at pos %u (%x), id: %.*s, " |
| "length: %u", (unsigned long)pos, |
| (unsigned long)pos, 4, cid, ch.len)); |
| |
| /* We are only interested in data with our stream id */ |
| if (stream_id != fport->stream_id) { |
| if (COMPARE_TAG(ch.id, PJMEDIA_AVI_LIST_TAG)) |
| PJ_LOG(5, (THIS_FILE, "Unsupported LIST tag found in " |
| "the movi data.")); |
| else if (COMPARE_TAG(ch.id, PJMEDIA_AVI_RIFF_TAG)) { |
| PJ_LOG(3, (THIS_FILE, "Unsupported format: multiple " |
| "AVIs in a single file.")); |
| status = AVI_EOF; |
| goto on_error2; |
| } |
| |
| status = pj_file_setpos(fport->fd, ch.len, |
| PJ_SEEK_CUR); |
| continue; |
| } |
| fport->size_left = ch.len; |
| } |
| |
| frame->type = (fport->base.info.fmt.type == PJMEDIA_TYPE_VIDEO ? |
| PJMEDIA_FRAME_TYPE_VIDEO : PJMEDIA_FRAME_TYPE_AUDIO); |
| |
| if (frame->type == PJMEDIA_FRAME_TYPE_AUDIO) { |
| if (size_to_read > fport->size_left) |
| size_to_read = fport->size_left; |
| status = file_read3(fport->fd, (char *)frame->buf + frame->size - |
| size_to_read, size_to_read, |
| fport->bits_per_sample, &size_read); |
| if (status != PJ_SUCCESS) |
| goto on_error2; |
| fport->size_left -= size_to_read; |
| } else { |
| pj_assert(frame->size >= ch.len); |
| status = file_read3(fport->fd, frame->buf, ch.len, |
| 0, &size_read); |
| if (status != PJ_SUCCESS) |
| goto on_error2; |
| frame->size = ch.len; |
| fport->size_left = 0; |
| } |
| |
| break; |
| |
| } while(1); |
| |
| frame->timestamp.u64 = fport->next_ts.u64; |
| if (frame->type == PJMEDIA_FRAME_TYPE_AUDIO) { |
| if (fport->usec_per_frame) { |
| fport->next_ts.u64 += (fport->usec_per_frame * |
| fport->base.info.fmt.det.aud.clock_rate / |
| 1000000); |
| } else { |
| fport->next_ts.u64 += (frame->size * |
| fport->base.info.fmt.det.aud.clock_rate / |
| (fport->base.info.fmt.det.aud.avg_bps / 8)); |
| } |
| } else { |
| if (fport->usec_per_frame) { |
| fport->next_ts.u64 += (fport->usec_per_frame * VIDEO_CLOCK_RATE / |
| 1000000); |
| } else { |
| fport->next_ts.u64 += (frame->size * VIDEO_CLOCK_RATE / |
| (fport->base.info.fmt.det.vid.avg_bps / 8)); |
| } |
| } |
| |
| return PJ_SUCCESS; |
| |
| on_error2: |
| if (status == AVI_EOF) { |
| size_to_read -= size_read; |
| pj_bzero((char *)frame->buf + frame->size - size_to_read, |
| size_to_read); |
| fport->eof = PJ_TRUE; |
| |
| return PJ_SUCCESS; |
| } |
| |
| return status; |
| } |
| |
| /* |
| * Destroy port. |
| */ |
| static pj_status_t avi_on_destroy(pjmedia_port *this_port) |
| { |
| struct avi_reader_port *fport = (struct avi_reader_port*) this_port; |
| |
| pj_assert(this_port->info.signature == SIGNATURE); |
| |
| if (fport->fd != (pj_oshandle_t) (pj_ssize_t)-1) |
| pj_file_close(fport->fd); |
| return PJ_SUCCESS; |
| } |
| |
| |
| #endif /* PJMEDIA_HAS_VIDEO */ |