diff options
Diffstat (limited to 'src/demuxers/demux_mpgaudio.c')
| -rw-r--r-- | src/demuxers/demux_mpgaudio.c | 491 |
1 files changed, 288 insertions, 203 deletions
diff --git a/src/demuxers/demux_mpgaudio.c b/src/demuxers/demux_mpgaudio.c index 31b2d33ff..cf410eed8 100644 --- a/src/demuxers/demux_mpgaudio.c +++ b/src/demuxers/demux_mpgaudio.c @@ -15,15 +15,12 @@ * * 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 - * - * $Id: demux_mpgaudio.c,v 1.156 2007/03/29 16:32:12 dgp85 Exp $ + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA * * demultiplexer for mpeg audio (i.e. mp3) streams * * mp3 file structure: * [id3v2][Xing|Vbri] Frame1 Frame2 Frame3...FrameX [Lyrics][id3v2][id3v1] - * */ #ifdef HAVE_CONFIG_H @@ -36,15 +33,15 @@ #include <string.h> #include <stdlib.h> -#define LOG_MODULE "demux_mpeg_audio" +#define LOG_MODULE "demux_mpgaudio" #define LOG_VERBOSE /* #define LOG */ -#include "xine_internal.h" -#include "xineutils.h" -#include "demux.h" -#include "compat.h" +#include <xine/xine_internal.h> +#include <xine/xineutils.h> +#include <xine/demux.h> +#include <xine/compat.h> #include "bswap.h" #include "group_audio.h" #include "id3.h" @@ -54,19 +51,20 @@ * the second mp3 frame is sent to the decoder */ #define NUM_PREVIEW_BUFFERS 2 +#define NUM_VALID_FRAMES 3 -#define WRAP_THRESHOLD 120000 #define FOURCC_TAG BE_FOURCC #define RIFF_CHECK_BYTES 1024 #define RIFF_TAG FOURCC_TAG('R', 'I', 'F', 'F') #define AVI_TAG FOURCC_TAG('A', 'V', 'I', ' ') #define CDXA_TAG FOURCC_TAG('C', 'D', 'X', 'A') -#define MPEG_MARKER FOURCC_TAG( 0x00, 0x00, 0x01, 0xBA ) +#define MPEG_MARKER ME_FOURCC( 0x00, 0x00, 0x01, 0xBA ) /* Xing header stuff */ #define XING_TAG FOURCC_TAG('X', 'i', 'n', 'g') +#define INFO_TAG FOURCC_TAG('I', 'n', 'f', 'o') #define XING_FRAMES_FLAG 0x0001 #define XING_BYTES_FLAG 0x0002 #define XING_TOC_FLAG 0x0004 @@ -79,16 +77,16 @@ /* mp3 frame struct */ typedef struct { /* header */ - double duration; - uint32_t size; /* in bytes */ + double duration; /* in milliseconds */ + uint32_t size; /* in bytes; including padding */ uint32_t bitrate; /* in bit per second */ uint16_t freq; /* in Hz */ - uint8_t layer; - uint8_t version_idx:2; /* 0: mpeg1, 1: mpeg2, 2: mpeg2.5 */ uint8_t lsf_bit:1; uint8_t channel_mode:3; + uint8_t padding:3; /* in bytes */ + uint8_t is_free_bitrate:1; } mpg_audio_frame_t; /* Xing Vbr Header struct */ @@ -127,7 +125,13 @@ typedef struct { int br; /* bitrate in bits/second */ uint32_t blocksize; + /* current mp3 frame */ mpg_audio_frame_t cur_frame; + + /* next mp3 frame, used when the frame size cannot be computed from the + * current frame header */ + mpg_audio_frame_t next_frame; + double cur_time; /* in milliseconds */ off_t mpg_frame_start; /* offset */ @@ -137,7 +141,15 @@ typedef struct { int check_vbr_header; xing_header_t *xing_header; vbri_header_t *vbri_header; - + + int found_next_frame:1; + int free_bitrate_count; + off_t free_bitrate_size; /* use this size if 3 free bitrate frames are encountered */ + uint8_t next_header[4]; + int mpg_version; + int mpg_layer; + int valid_frames; + } demux_mpgaudio_t ; /* demuxer class struct */ @@ -205,17 +217,17 @@ static int parse_frame_header(mpg_audio_frame_t *const frame, const uint8_t *con #endif } frame_header; - const uint32_t head = BE_32(buf); + const uint32_t head = _X_BE_32(buf); const uint16_t frame_sync = head >> 21; - lprintf("header: %08X\n", head); if (frame_sync != 0x7ff) { - lprintf("invalid frame sync\n"); + lprintf("invalid frame sync %08X\n", head); return 0; } + lprintf("header: %08X\n", head); frame_header.mpeg25_bit = (head >> 20) & 0x1; - frame->lsf_bit = (head >> 19) & 0x1; + frame->lsf_bit = (head >> 19) & 0x1; if (!frame_header.mpeg25_bit) { if (frame->lsf_bit) { lprintf("reserved mpeg25 lsf combination\n"); @@ -236,14 +248,14 @@ static int parse_frame_header(mpg_audio_frame_t *const frame, const uint8_t *con } frame_header.bitrate_idx = (head >> 12) & 0xf; - if ((frame_header.bitrate_idx == 0) || (frame_header.bitrate_idx == 15)) { - lprintf("invalid bitrate index\n"); + if (frame_header.bitrate_idx == 15) { + lprintf("invalid bitrate index: %d\n", frame_header.bitrate_idx); return 0; } frame_header.freq_idx = (head >> 10) & 0x3; if (frame_header.freq_idx == 3) { - lprintf("invalid frequence index\n"); + lprintf("invalid frequence index: %d\n", frame_header.freq_idx); return 0; } @@ -276,19 +288,27 @@ static int parse_frame_header(mpg_audio_frame_t *const frame, const uint8_t *con const uint16_t samples = mp3_samples[frame->version_idx][frame->layer - 1]; frame->bitrate = mp3_bitrates[frame->version_idx][frame->layer - 1][frame_header.bitrate_idx] * 1000; frame->freq = mp3_freqs[frame->version_idx][frame_header.freq_idx]; - - frame->size = samples * (frame->bitrate / 8); - frame->size /= frame->freq; - /* Padding: only if padding_bit is set; 4 bytes for Layer 1 and 1 byte for others */ - frame->size += ( frame_header.padding_bit ? ( frame->layer == 1 ? 4 : 1 ) : 0 ); - frame->duration = 1000.0f * (double)samples / (double)frame->freq; + frame->padding = ( frame_header.padding_bit ? ( frame->layer == 1 ? 4 : 1 ) : 0 ); + frame->channel_mode = frame_header.channel_mode; + + if (frame->bitrate > 0) { + frame->size = samples * (frame->bitrate / 8); + frame->size /= frame->freq; + /* Padding: only if padding_bit is set; 4 bytes for Layer 1 and 1 byte for others */ + frame->size += frame->padding; + } else { + /* Free bitrate frame, the size of the frame cannot be computed from the header. */ + frame->is_free_bitrate = 1; + frame->size = 0; + } } - lprintf("mpeg %d, layer %d\n", frame->version_idx + 1, frame->layer); - lprintf("bitrate: %d bps, samplerate: %d Hz\n", frame->bitrate, frame->freq); + lprintf("mpeg %d, layer %d, channel_mode: %d\n", frame->version_idx + 1, + frame->layer, frame->channel_mode); + lprintf("bitrate: %d bps, output freq: %d Hz\n", frame->bitrate, frame->freq); lprintf("length: %d bytes, %f ms\n", frame->size, frame->duration); - lprintf("padding: %d bytes\n", ( frame_header.padding_bit ? ( frame->layer == 1 ? 4 : 1 ) : 0 )); + lprintf("padding: %d bytes\n", frame->padding); return 1; } @@ -298,16 +318,8 @@ static int parse_frame_header(mpg_audio_frame_t *const frame, const uint8_t *con */ static xing_header_t* parse_xing_header(mpg_audio_frame_t *frame, uint8_t *buf, int bufsize) { - -#ifdef LOG - int i; -#endif uint8_t *ptr = buf; - xing_header_t *xing; - - xing = xine_xmalloc (sizeof (xing_header_t)); - if (!xing) - return NULL; + xing_header_t *xing = NULL; /* offset of the Xing header */ if (frame->lsf_bit) { @@ -322,52 +334,87 @@ static xing_header_t* parse_xing_header(mpg_audio_frame_t *frame, ptr += (9 + 4); } - if (ptr >= (buf + bufsize - 4)) return 0; + if (ptr >= (buf + bufsize - 4)) goto exit_error; lprintf("checking %08X\n", *ptr); - if (BE_32(ptr) == XING_TAG) { - lprintf("Xing header found\n"); + + if (_X_BE_32(ptr) == XING_TAG) { + int has_frames_flag = 0; + int has_bytes_flag = 0; + + xing = xine_xmalloc (sizeof (xing_header_t)); + if (!xing) + goto exit_error; + + lprintf("found Xing header\n"); ptr += 4; - if (ptr >= (buf + bufsize - 4)) return 0; - xing->flags = BE_32(ptr); ptr += 4; + if (ptr >= (buf + bufsize - 4)) goto exit_error; + xing->flags = _X_BE_32(ptr); ptr += 4; if (xing->flags & XING_FRAMES_FLAG) { - if (ptr >= (buf + bufsize - 4)) return 0; - xing->stream_frames = BE_32(ptr); ptr += 4; + if (ptr >= (buf + bufsize - 4)) goto exit_error; + xing->stream_frames = _X_BE_32(ptr); ptr += 4; lprintf("stream frames: %d\n", xing->stream_frames); + has_frames_flag = 1; } if (xing->flags & XING_BYTES_FLAG) { - if (ptr >= (buf + bufsize - 4)) return 0; - xing->stream_size = BE_32(ptr); ptr += 4; + if (ptr >= (buf + bufsize - 4)) goto exit_error; + xing->stream_size = _X_BE_32(ptr); ptr += 4; lprintf("stream size: %d\n", xing->stream_size); + has_bytes_flag = 1; } + + /* check if it's a useful Xing header */ + if (!has_frames_flag || !has_bytes_flag) { + lprintf("Stupid Xing tag, cannot do anything with it !\n"); + goto exit_error; + } + if (xing->flags & XING_TOC_FLAG) { + int i; + lprintf("toc found\n"); - if (ptr >= (buf + bufsize - XING_TOC_LENGTH)) return 0; + if (ptr >= (buf + bufsize - XING_TOC_LENGTH)) goto exit_error; memcpy(xing->toc, ptr, XING_TOC_LENGTH); #ifdef LOG for (i = 0; i < XING_TOC_LENGTH; i++) { - lprintf("%d ", xing->toc[i]); + printf("%d ", xing->toc[i]); } - lprintf("\n"); + printf("\n"); #endif + /* check the table validity + * - MUST start with 0 + * - values MUST increase + */ + if (xing->toc[0] != 0) { + lprintf("invalid Xing toc\n"); + goto exit_error; + } + for (i = 1; i < XING_TOC_LENGTH; i++) { + if (xing->toc[i] < xing->toc[i-1]) { + lprintf("invalid Xing toc\n"); + goto exit_error; + } + } ptr += XING_TOC_LENGTH; } xing->vbr_scale = -1; if (xing->flags & XING_VBR_SCALE_FLAG) { - if (ptr >= (buf + bufsize - 4)) return 0; - xing->vbr_scale = BE_32(ptr); + if (ptr >= (buf + bufsize - 4)) goto exit_error; + xing->vbr_scale = _X_BE_32(ptr); lprintf("vbr_scale: %d\n", xing->vbr_scale); } - - return xing; } else { lprintf("Xing header not found\n"); + } + return xing; + +exit_error: + lprintf("Xing header parse error\n"); free(xing); return NULL; } -} /* * Parse a Vbri header @@ -388,20 +435,20 @@ static vbri_header_t* parse_vbri_header(mpg_audio_frame_t *frame, if ((ptr + 4) >= (buf + bufsize)) return 0; lprintf("Checking %08X\n", *ptr); - if (BE_32(ptr) == VBRI_TAG) { - lprintf("Vbri header found\n"); + if (_X_BE_32(ptr) == VBRI_TAG) { + lprintf("found Vbri header\n"); ptr += 4; if ((ptr + 22) >= (buf + bufsize)) return 0; - vbri->version = BE_16(ptr); ptr += 2; - vbri->delai = BE_16(ptr); ptr += 2; - vbri->quality = BE_16(ptr); ptr += 2; - vbri->stream_size = BE_32(ptr); ptr += 4; - vbri->stream_frames = BE_32(ptr); ptr += 4; - vbri->toc_entries = BE_16(ptr); ptr += 2; - vbri->toc_scale_factor = BE_16(ptr); ptr += 2; - vbri->entry_size = BE_16(ptr); ptr += 2; - vbri->entry_frames = BE_16(ptr); ptr += 2; + vbri->version = _X_BE_16(ptr); ptr += 2; + vbri->delai = _X_BE_16(ptr); ptr += 2; + vbri->quality = _X_BE_16(ptr); ptr += 2; + vbri->stream_size = _X_BE_32(ptr); ptr += 4; + vbri->stream_frames = _X_BE_32(ptr); ptr += 4; + vbri->toc_entries = _X_BE_16(ptr); ptr += 2; + vbri->toc_scale_factor = _X_BE_16(ptr); ptr += 2; + vbri->entry_size = _X_BE_16(ptr); ptr += 2; + vbri->entry_frames = _X_BE_16(ptr); ptr += 2; lprintf("version: %d\n", vbri->version); lprintf("delai: %d\n", vbri->delai); lprintf("quality: %d\n", vbri->quality); @@ -413,7 +460,7 @@ static vbri_header_t* parse_vbri_header(mpg_audio_frame_t *frame, lprintf("entry_frames: %d\n", vbri->entry_frames); if ((ptr + (vbri->toc_entries + 1) * vbri->entry_size) >= (buf + bufsize)) return 0; - vbri->toc = xine_xmalloc (sizeof(int) * (vbri->toc_entries + 1)); + vbri->toc = xine_xcalloc ((vbri->toc_entries + 1), sizeof(int)); if (!vbri->toc) { free (vbri); return NULL; @@ -453,6 +500,7 @@ static vbri_header_t* parse_vbri_header(mpg_audio_frame_t *frame, } } + /* * Parse a mp3 frame paylod * return 1 on success, 0 on error @@ -463,43 +511,97 @@ static int parse_frame_payload(demux_mpgaudio_t *this, buf_element_t *buf; off_t frame_pos, len; uint64_t pts = 0; + int payload_size = 0; frame_pos = this->input->get_current_pos(this->input) - 4; - lprintf("frame_pos = %"PRId64"\n", frame_pos); + lprintf("frame_pos = %"PRId64", header: %08X\n", frame_pos, _X_BE_32(frame_header)); buf = this->audio_fifo->buffer_pool_alloc(this->audio_fifo); if (this->cur_frame.size > buf->max_size) { xprintf(this->stream->xine, XINE_VERBOSITY_LOG, - "demux_mpgaudio: frame size is greater than fifo buffer size\n"); + LOG_MODULE ": frame size is greater than fifo buffer size\n"); buf->free_buffer(buf); return 0; } - - /* the decoder needs the frame header */ - memcpy(buf->mem, frame_header, 4); - len = this->input->read(this->input, buf->mem + 4, this->cur_frame.size - 4); - if (len != (this->cur_frame.size - 4)) { - buf->free_buffer(buf); - return 0; + memcpy(buf->content, frame_header, 4); + + /* compute the payload size */ + if (this->cur_frame.size > 0) { + payload_size = this->cur_frame.size - 4; + this->free_bitrate_count = 0; + } else if (this->free_bitrate_count >= NUM_VALID_FRAMES) { + payload_size = this->free_bitrate_size + this->cur_frame.padding - 4; + this->cur_frame.size = payload_size + 4; + } else { + this->free_bitrate_count++; + payload_size = 0; + } + + /* Read the payload data. */ + if (payload_size > 0) { + off_t len; + + /* If we know the payload size, it's easy */ + this->found_next_frame = 0; + len = this->input->read(this->input, buf->content + 4, payload_size); + if (len != payload_size) { + buf->free_buffer(buf); + return 0; + } + } else { + /* Search for the beginning of the next frame and deduce the size of the + * current frame from the position of the next one. */ + int payload_size = 0; + int max_size = buf->max_size - 4; + + while (payload_size < max_size) { + len = this->input->read(this->input, &buf->content[4 + payload_size], 1); + if (len != 1) { + lprintf("EOF\n"); + buf->free_buffer(buf); + return 0; + } + payload_size += len; + + if (parse_frame_header(&this->next_frame, &buf->content[payload_size])) { + lprintf("found next frame header\n"); + + if (this->free_bitrate_size == 0) { + this->free_bitrate_size = payload_size - this->cur_frame.padding; + } + + /* don't read the frame header twice */ + this->found_next_frame = 1; + memcpy(&this->next_header[0], &buf->content[payload_size], 4); + payload_size -= 4; + break; + } + } + this->cur_frame.size = payload_size + 4; + this->cur_frame.bitrate = 8000 * this->cur_frame.size / this->cur_frame.duration; + lprintf("free bitrate: bitrate: %d, frame size: %d\n", this->br, this->cur_frame.size); } if (this->check_vbr_header) { this->check_vbr_header = 0; this->mpg_frame_start = frame_pos; - this->xing_header = parse_xing_header(&this->cur_frame, buf->mem, this->cur_frame.size); + this->xing_header = parse_xing_header(&this->cur_frame, buf->content, this->cur_frame.size); if (this->xing_header) { buf->free_buffer(buf); + xprintf(this->stream->xine, XINE_VERBOSITY_LOG, + LOG_MODULE ": found Xing header at offset %PRId64\n", frame_pos); return 1; } - this->vbri_header = parse_vbri_header(&this->cur_frame, buf->mem, this->cur_frame.size); + this->vbri_header = parse_vbri_header(&this->cur_frame, buf->content, this->cur_frame.size); if (this->vbri_header) { buf->free_buffer(buf); + xprintf(this->stream->xine, XINE_VERBOSITY_LOG, + LOG_MODULE ": found Vbri header at offset %PRId64\n", frame_pos); return 1; } } - pts = (int64_t)(this->cur_time * 90.0f); @@ -508,14 +610,13 @@ static int parse_frame_payload(demux_mpgaudio_t *this, buf->extra_info->input_time = this->cur_time; buf->pts = pts; - buf->size = len + 4; - buf->content = buf->mem; + buf->size = this->cur_frame.size; buf->type = BUF_AUDIO_MPEG; buf->decoder_info[0] = 1; buf->decoder_flags = decoder_flags|BUF_FLAG_FRAME_END; + lprintf("send buffer: size=%d, pts=%"PRId64"\n", buf->size, pts); this->audio_fifo->put(this->audio_fifo, buf); - lprintf("send buffer: pts=%"PRId64"\n", pts); this->cur_time += this->cur_frame.duration; return 1; } @@ -579,40 +680,51 @@ static int read_frame_header(demux_mpgaudio_t *this, uint8_t *header_buf, int by * Parse next mp3 frame */ static int demux_mpgaudio_next (demux_mpgaudio_t *this, int decoder_flags, int send_header) { - uint8_t header_buf[4]; - int bytes = 4; - - for (;;) { - - if (read_frame_header(this, header_buf, bytes)) { - - if (parse_frame_header(&this->cur_frame, header_buf)) { - - /* send header buffer */ - if ( send_header ) { - buf_element_t *buf; - - buf = this->audio_fifo->buffer_pool_alloc(this->audio_fifo); - - buf->type = BUF_AUDIO_MPEG; - buf->decoder_flags = BUF_FLAG_HEADER|BUF_FLAG_STDHEADER|BUF_FLAG_FRAME_END; - - buf->decoder_info[0] = 0; - buf->decoder_info[1] = this->cur_frame.freq; - buf->decoder_info[2] = 0; /* bits_per_sample */ - - /* Only for channel_mode == 3 (mono) there is one channel, for any other case, there are 2 */ - buf->decoder_info[3] = ( this->cur_frame.channel_mode == 3 ) ? 1 : 2; - - buf->size = 0; /* No extra header data */ - - this->audio_fifo->put(this->audio_fifo, buf); - } - - return parse_frame_payload(this, header_buf, decoder_flags); - - } else if ( id3v2_istag(header_buf) ) { - if (!id3v2_parse_tag(this->input, this->stream, header_buf)) { + uint8_t buffer[4]; + uint8_t *header = buffer; + + if (this->found_next_frame) { + lprintf("skip header reading\n"); + header = this->next_header; + memcpy(&this->cur_frame, &this->next_frame, sizeof(mpg_audio_frame_t)); + } else { + int bytes = 4; + int loose_sync = 0; + + for (;;) { + if (!read_frame_header(this, header, bytes)) + return 0; + if (parse_frame_header(&this->cur_frame, header)) { + lprintf("frame found\n"); + + /* additionnal checks */ + if ((this->mpg_version == (this->cur_frame.version_idx + 1)) && + (this->mpg_layer == this->cur_frame.layer)) { + this->valid_frames++; + break; + } else { + if (this->valid_frames >= NUM_VALID_FRAMES) { + lprintf("invalid frame. expected mpeg %d, layer %d\n", this->mpg_version, this->mpg_layer); + } else { + this->mpg_version = this->cur_frame.version_idx + 1; + this->mpg_layer = this->cur_frame.layer; + this->valid_frames = 0; + break; + } + } + } + + if (!loose_sync) { + off_t frame_pos = this->input->get_current_pos(this->input) - 4; + loose_sync = 1; + xprintf(this->stream->xine, XINE_VERBOSITY_LOG, + LOG_MODULE ": loose mp3 sync at offset %"PRId64"\n", frame_pos); + } + /* the stream is broken, don't keep info about previous frames */ + this->free_bitrate_size = 0; + + if ( id3v2_istag(header) ) { + if (!id3v2_parse_tag(this->input, this->stream, header)) { xprintf(this->stream->xine, XINE_VERBOSITY_LOG, LOG_MODULE ": ID3V2 tag parsing error\n"); bytes = 1; /* resync */ @@ -623,12 +735,31 @@ static int demux_mpgaudio_next (demux_mpgaudio_t *this, int decoder_flags, int s /* skip */ bytes = 1; } - - } else { - lprintf("read error\n"); - return 0; } } + + /* send header buffer */ + if ( send_header ) { + buf_element_t *buf; + + buf = this->audio_fifo->buffer_pool_alloc(this->audio_fifo); + + buf->type = BUF_AUDIO_MPEG; + buf->decoder_flags = BUF_FLAG_HEADER|BUF_FLAG_STDHEADER|BUF_FLAG_FRAME_END; + + buf->decoder_info[0] = 0; + buf->decoder_info[1] = this->cur_frame.freq; + buf->decoder_info[2] = 0; /* bits_per_sample */ + + /* Only for channel_mode == 3 (mono) there is one channel, for any other case, there are 2 */ + buf->decoder_info[3] = ( this->cur_frame.channel_mode == 3 ) ? 1 : 2; + + buf->size = 0; /* No extra header data */ + + this->audio_fifo->put(this->audio_fifo, buf); + } + + return parse_frame_payload(this, header, decoder_flags); } static int demux_mpgaudio_send_chunk (demux_plugin_t *this_gen) { @@ -685,20 +816,16 @@ static int detect_mpgaudio_file(input_plugin_t *input) { if (preview_len < 4) return 0; - lprintf("got preview %02x %02x %02x %02x\n", - buf[0], buf[1], buf[2], buf[3]); + head = _X_ME_32(buf); - head = BE_32(buf); + lprintf("got preview %08x\n", head); - if ((head == ID3V22_TAG) || - (head == ID3V23_TAG) || - (head == ID3V24_TAG)) { + if (id3v2_istag(head)) { /* check if a mp3 frame follows the tag * id3v2 are not specific to mp3 files, * flac files can contain id3v2 tags */ - uint8_t *ptr = &buf[6]; - uint32_t tag_size = id3v2_tagsize(ptr); + int tag_size = _X_BE_32_synchsafe(&buf[6]); lprintf("try to skip id3v2 tag (%d bytes)\n", tag_size); if ((10 + tag_size) >= preview_len) { lprintf("cannot skip id3v2 tag\n"); @@ -755,11 +882,12 @@ static void demux_mpgaudio_send_headers (demux_plugin_t *this_gen) { */ this->check_vbr_header = 1; for (i = 0; i < NUM_PREVIEW_BUFFERS; i++) { + lprintf("preview buffer number %d / %d\n", i + 1, NUM_PREVIEW_BUFFERS); if (!demux_mpgaudio_next (this, BUF_FLAG_PREVIEW, i == 0)) { break; } } - + if (this->xing_header) { xing_header_t *xing = this->xing_header; @@ -770,7 +898,7 @@ static void demux_mpgaudio_send_headers (demux_plugin_t *this_gen) { if (this->stream_length) { this->br = ((uint64_t)xing->stream_size * 8 * 1000) / this->stream_length; } - + } else if (this->vbri_header) { vbri_header_t *vbri = this->vbri_header; @@ -812,8 +940,8 @@ static void demux_mpgaudio_send_headers (demux_plugin_t *this_gen) { */ { char scratch_buf[256]; - char *mpeg_ver[3] = {"1", "2", "2.5"}; - + static const char mpeg_ver[3][4] = {"1", "2", "2.5"}; + snprintf(scratch_buf, 256, "MPEG %s Layer %1d%s", mpeg_ver[this->cur_frame.version_idx], this->cur_frame.layer, (this->xing_header)? " VBR" : " CBR" ); @@ -926,7 +1054,7 @@ static int demux_mpgaudio_seek (demux_plugin_t *this_gen, if (this->stream_length > 0) { if (this->xing_header && - (this->xing_header->flags & (XING_TOC_FLAG | XING_BYTES_FLAG))) { + (this->xing_header->flags & XING_TOC_FLAG)) { seek_pos += xing_get_seek_point(this->xing_header, start_time, this->stream_length); lprintf("time seek: xing: time=%d, pos=%"PRId64"\n", start_time, seek_pos); } else if (this->vbri_header) { @@ -941,7 +1069,8 @@ static int demux_mpgaudio_seek (demux_plugin_t *this_gen, /* assume seeking is always perfect... */ this->cur_time = start_time; this->input->seek (this->input, seek_pos, SEEK_SET); - + this->found_next_frame = 0; + if (playing) { _x_demux_flush_engine(this->stream); } @@ -954,11 +1083,6 @@ static int demux_mpgaudio_seek (demux_plugin_t *this_gen, return this->status; } -static void demux_mpgaudio_dispose (demux_plugin_t *this) { - - free (this); -} - static int demux_mpgaudio_get_stream_length (demux_plugin_t *this_gen) { demux_mpgaudio_t *this = (demux_mpgaudio_t *) this_gen; @@ -992,18 +1116,7 @@ static demux_plugin_t *open_plugin (demux_class_t *class_gen, xine_stream_t *str } break; - case METHOD_BY_EXTENSION: { - const char *const mrl = input->get_mrl(input); - const char *const extensions = class_gen->get_extensions (class_gen); - - lprintf ("stage by extension %s\n", mrl); - - if (!_x_demux_check_extension (mrl, extensions)) - return NULL; - - } - break; - + case METHOD_BY_MRL: case METHOD_EXPLICIT: break; @@ -1016,7 +1129,7 @@ static demux_plugin_t *open_plugin (demux_class_t *class_gen, xine_stream_t *str this->demux_plugin.send_headers = demux_mpgaudio_send_headers; this->demux_plugin.send_chunk = demux_mpgaudio_send_chunk; this->demux_plugin.seek = demux_mpgaudio_seek; - this->demux_plugin.dispose = demux_mpgaudio_dispose; + this->demux_plugin.dispose = default_demux_plugin_dispose; this->demux_plugin.get_status = demux_mpgaudio_get_status; this->demux_plugin.get_stream_length = demux_mpgaudio_get_stream_length; this->demux_plugin.get_capabilities = demux_mpgaudio_get_capabilities; @@ -1034,49 +1147,6 @@ static demux_plugin_t *open_plugin (demux_class_t *class_gen, xine_stream_t *str /* * demux mpegaudio class */ - -static const char *get_description (demux_class_t *this_gen) { - return "MPEG audio demux plugin"; -} - -static const char *get_identifier (demux_class_t *this_gen) { - return "MPEGAUDIO"; -} - -static const char *get_extensions (demux_class_t *this_gen) { - demux_mpgaudio_class_t *this = (demux_mpgaudio_class_t *) this_gen; - - if( _x_decoder_available(this->xine, BUF_AUDIO_MPEG) ) - return "mp3 mp2 mpa mpega"; - else - return ""; -} - -static const char *get_mimetypes (demux_class_t *this_gen) { - demux_mpgaudio_class_t *this = (demux_mpgaudio_class_t *) this_gen; - - if( _x_decoder_available(this->xine, BUF_AUDIO_MPEG) ) - return "audio/mpeg2: mp2: MPEG audio;" - "audio/x-mpeg2: mp2: MPEG audio;" - "audio/mpeg3: mp3: MPEG audio;" - "audio/x-mpeg3: mp3: MPEG audio;" - "audio/mpeg: mpa,abs,mpega: MPEG audio;" - "audio/x-mpeg: mpa,abs,mpega: MPEG audio;" - "audio/x-mpegurl: mp3: MPEG audio;" - "audio/mpegurl: mp3: MPEG audio;" - "audio/mp3: mp3: MPEG audio;" - "audio/x-mp3: mp3: MPEG audio;"; - else - return ""; -} - -static void class_dispose (demux_class_t *this_gen) { - - demux_mpgaudio_class_t *this = (demux_mpgaudio_class_t *) this_gen; - - free (this); -} - void *demux_mpgaudio_init_class (xine_t *xine, void *data) { demux_mpgaudio_class_t *this; @@ -1085,11 +1155,26 @@ void *demux_mpgaudio_init_class (xine_t *xine, void *data) { this->xine = xine; this->demux_class.open_plugin = open_plugin; - this->demux_class.get_description = get_description; - this->demux_class.get_identifier = get_identifier; - this->demux_class.get_mimetypes = get_mimetypes; - this->demux_class.get_extensions = get_extensions; - this->demux_class.dispose = class_dispose; + this->demux_class.description = N_("MPEG audio demux plugin"); + this->demux_class.identifier = "MPEGAUDIO"; + if( _x_decoder_available(this->xine, BUF_AUDIO_MPEG) ) { + this->demux_class.mimetypes = + "audio/mpeg2: mp2: MPEG audio;" + "audio/x-mpeg2: mp2: MPEG audio;" + "audio/mpeg3: mp3: MPEG audio;" + "audio/x-mpeg3: mp3: MPEG audio;" + "audio/mpeg: mpa,abs,mpega: MPEG audio;" + "audio/x-mpeg: mpa,abs,mpega: MPEG audio;" + "audio/x-mpegurl: mp3: MPEG audio;" + "audio/mpegurl: mp3: MPEG audio;" + "audio/mp3: mp3: MPEG audio;" + "audio/x-mp3: mp3: MPEG audio;"; + this->demux_class.extensions = "mp3 mp2 mpa mpega"; + } else { + this->demux_class.mimetypes = NULL; + this->demux_class.extensions = NULL; + } + this->demux_class.dispose = default_demux_class_dispose; return this; } |