// SPDX-License-Identifier: GPL-2.0-or-later /* * av7110_av.c: audio and video MPEG decoder stuff * * Copyright (C) 1999-2002 Ralph Metzler * & Marcus Metzler for convergence integrated media GmbH * * originally based on code by: * Copyright (C) 1998,1999 Christian Theiss * * the project's page is at https://linuxtv.org */ #include #include #include #include #include #include #include "av7110.h" #include "av7110_hw.h" #include "av7110_av.h" #include "av7110_ipack.h" /* MPEG-2 (ISO 13818 / H.222.0) stream types */ #define PROG_STREAM_MAP 0xBC #define PRIVATE_STREAM1 0xBD #define PADDING_STREAM 0xBE #define PRIVATE_STREAM2 0xBF #define AUDIO_STREAM_S 0xC0 #define AUDIO_STREAM_E 0xDF #define VIDEO_STREAM_S 0xE0 #define VIDEO_STREAM_E 0xEF #define ECM_STREAM 0xF0 #define EMM_STREAM 0xF1 #define DSM_CC_STREAM 0xF2 #define ISO13522_STREAM 0xF3 #define PROG_STREAM_DIR 0xFF #define PTS_DTS_FLAGS 0xC0 //pts_dts flags #define PTS_ONLY 0x80 #define PTS_DTS 0xC0 #define TS_SIZE 188 #define TRANS_ERROR 0x80 #define PAY_START 0x40 #define TRANS_PRIO 0x20 #define PID_MASK_HI 0x1F //flags #define TRANS_SCRMBL1 0x80 #define TRANS_SCRMBL2 0x40 #define ADAPT_FIELD 0x20 #define PAYLOAD 0x10 #define COUNT_MASK 0x0F // adaptation flags #define DISCON_IND 0x80 #define RAND_ACC_IND 0x40 #define ES_PRI_IND 0x20 #define PCR_FLAG 0x10 #define OPCR_FLAG 0x08 #define SPLICE_FLAG 0x04 #define TRANS_PRIV 0x02 #define ADAP_EXT_FLAG 0x01 // adaptation extension flags #define LTW_FLAG 0x80 #define PIECE_RATE 0x40 #define SEAM_SPLICE 0x20 static void p_to_t(u8 const *buf, long int length, u16 pid, u8 *counter, struct dvb_demux_feed *feed); static int write_ts_to_decoder(struct av7110 *av7110, int type, const u8 *buf, size_t len); int av7110_record_cb(struct dvb_filter_pes2ts *p2t, u8 *buf, size_t len) { struct dvb_demux_feed *dvbdmxfeed = (struct dvb_demux_feed *) p2t->priv; if (!(dvbdmxfeed->ts_type & TS_PACKET)) return 0; if (buf[3] == 0xe0) // video PES do not have a length in TS buf[4] = buf[5] = 0; if (dvbdmxfeed->ts_type & TS_PAYLOAD_ONLY) return dvbdmxfeed->cb.ts(buf, len, NULL, 0, &dvbdmxfeed->feed.ts, NULL); else return dvb_filter_pes2ts(p2t, buf, len, 1); } static int dvb_filter_pes2ts_cb(void *priv, unsigned char *data) { struct dvb_demux_feed *dvbdmxfeed = (struct dvb_demux_feed *) priv; dvbdmxfeed->cb.ts(data, 188, NULL, 0, &dvbdmxfeed->feed.ts, NULL); return 0; } int av7110_av_start_record(struct av7110 *av7110, int av, struct dvb_demux_feed *dvbdmxfeed) { int ret = 0; struct dvb_demux *dvbdmx = dvbdmxfeed->demux; dprintk(2, "av7110:%p, , dvb_demux_feed:%p\n", av7110, dvbdmxfeed); if (av7110->playing || (av7110->rec_mode & av)) return -EBUSY; av7110_fw_cmd(av7110, COMTYPE_REC_PLAY, __Stop, 0); dvbdmx->recording = 1; av7110->rec_mode |= av; switch (av7110->rec_mode) { case RP_AUDIO: dvb_filter_pes2ts_init(&av7110->p2t[0], dvbdmx->pesfilter[0]->pid, dvb_filter_pes2ts_cb, (void *) dvbdmx->pesfilter[0]); ret = av7110_fw_cmd(av7110, COMTYPE_REC_PLAY, __Record, 2, AudioPES, 0); break; case RP_VIDEO: dvb_filter_pes2ts_init(&av7110->p2t[1], dvbdmx->pesfilter[1]->pid, dvb_filter_pes2ts_cb, (void *) dvbdmx->pesfilter[1]); ret = av7110_fw_cmd(av7110, COMTYPE_REC_PLAY, __Record, 2, VideoPES, 0); break; case RP_AV: dvb_filter_pes2ts_init(&av7110->p2t[0], dvbdmx->pesfilter[0]->pid, dvb_filter_pes2ts_cb, (void *) dvbdmx->pesfilter[0]); dvb_filter_pes2ts_init(&av7110->p2t[1], dvbdmx->pesfilter[1]->pid, dvb_filter_pes2ts_cb, (void *) dvbdmx->pesfilter[1]); ret = av7110_fw_cmd(av7110, COMTYPE_REC_PLAY, __Record, 2, AV_PES, 0); break; } return ret; } int av7110_av_start_play(struct av7110 *av7110, int av) { int ret = 0; dprintk(2, "av7110:%p, \n", av7110); if (av7110->rec_mode) return -EBUSY; if (av7110->playing & av) return -EBUSY; av7110_fw_cmd(av7110, COMTYPE_REC_PLAY, __Stop, 0); if (av7110->playing == RP_NONE) { av7110_ipack_reset(&av7110->ipack[0]); av7110_ipack_reset(&av7110->ipack[1]); } av7110->playing |= av; switch (av7110->playing) { case RP_AUDIO: ret = av7110_fw_cmd(av7110, COMTYPE_REC_PLAY, __Play, 2, AudioPES, 0); break; case RP_VIDEO: ret = av7110_fw_cmd(av7110, COMTYPE_REC_PLAY, __Play, 2, VideoPES, 0); av7110->sinfo = 0; break; case RP_AV: av7110->sinfo = 0; ret = av7110_fw_cmd(av7110, COMTYPE_REC_PLAY, __Play, 2, AV_PES, 0); break; } return ret; } int av7110_av_stop(struct av7110 *av7110, int av) { int ret = 0; dprintk(2, "av7110:%p, \n", av7110); if (!(av7110->playing & av) && !(av7110->rec_mode & av)) return 0; av7110_fw_cmd(av7110, COMTYPE_REC_PLAY, __Stop, 0); if (av7110->playing) { av7110->playing &= ~av; switch (av7110->playing) { case RP_AUDIO: ret = av7110_fw_cmd(av7110, COMTYPE_REC_PLAY, __Play, 2, AudioPES, 0); break; case RP_VIDEO: ret = av7110_fw_cmd(av7110, COMTYPE_REC_PLAY, __Play, 2, VideoPES, 0); break; case RP_NONE: ret = av7110_set_vidmode(av7110, av7110->vidmode); break; } } else { av7110->rec_mode &= ~av; switch (av7110->rec_mode) { case RP_AUDIO: ret = av7110_fw_cmd(av7110, COMTYPE_REC_PLAY, __Record, 2, AudioPES, 0); break; case RP_VIDEO: ret = av7110_fw_cmd(av7110, COMTYPE_REC_PLAY, __Record, 2, VideoPES, 0); break; case RP_NONE: break; } } return ret; } int av7110_pes_play(void *dest, struct dvb_ringbuffer *buf, int dlen) { int len; u32 sync; u16 blen; if (!dlen) { wake_up(&buf->queue); return -1; } while (1) { len = dvb_ringbuffer_avail(buf); if (len < 6) { wake_up(&buf->queue); return -1; } sync = DVB_RINGBUFFER_PEEK(buf, 0) << 24; sync |= DVB_RINGBUFFER_PEEK(buf, 1) << 16; sync |= DVB_RINGBUFFER_PEEK(buf, 2) << 8; sync |= DVB_RINGBUFFER_PEEK(buf, 3); if (((sync &~ 0x0f) == 0x000001e0) || ((sync &~ 0x1f) == 0x000001c0) || (sync == 0x000001bd)) break; printk("resync\n"); DVB_RINGBUFFER_SKIP(buf, 1); } blen = DVB_RINGBUFFER_PEEK(buf, 4) << 8; blen |= DVB_RINGBUFFER_PEEK(buf, 5); blen += 6; if (len < blen || blen > dlen) { //printk("buffer empty - avail %d blen %u dlen %d\n", len, blen, dlen); wake_up(&buf->queue); return -1; } dvb_ringbuffer_read(buf, dest, (size_t) blen); dprintk(2, "pread=0x%08lx, pwrite=0x%08lx\n", (unsigned long) buf->pread, (unsigned long) buf->pwrite); wake_up(&buf->queue); return blen; } int av7110_set_volume(struct av7110 *av7110, unsigned int volleft, unsigned int volright) { unsigned int vol, val, balance = 0; int err; dprintk(2, "av7110:%p, \n", av7110); av7110->mixer.volume_left = volleft; av7110->mixer.volume_right = volright; switch (av7110->adac_type) { case DVB_ADAC_TI: volleft = (volleft * 256) / 1036; volright = (volright * 256) / 1036; if (volleft > 0x3f) volleft = 0x3f; if (volright > 0x3f) volright = 0x3f; if ((err = SendDAC(av7110, 3, 0x80 + volleft))) return err; return SendDAC(av7110, 4, volright); case DVB_ADAC_CRYSTAL: volleft = 127 - volleft / 2; volright = 127 - volright / 2; i2c_writereg(av7110, 0x20, 0x03, volleft); i2c_writereg(av7110, 0x20, 0x04, volright); return 0; case DVB_ADAC_MSP34x0: vol = (volleft > volright) ? volleft : volright; val = (vol * 0x73 / 255) << 8; if (vol > 0) balance = ((volright - volleft) * 127) / vol; msp_writereg(av7110, MSP_WR_DSP, 0x0001, balance << 8); msp_writereg(av7110, MSP_WR_DSP, 0x0000, val); /* loudspeaker */ msp_writereg(av7110, MSP_WR_DSP, 0x0006, val); /* headphonesr */ return 0; case DVB_ADAC_MSP34x5: vol = (volleft > volright) ? volleft : volright; val = (vol * 0x73 / 255) << 8; if (vol > 0) balance = ((volright - volleft) * 127) / vol; msp_writereg(av7110, MSP_WR_DSP, 0x0001, balance << 8); msp_writereg(av7110, MSP_WR_DSP, 0x0000, val); /* loudspeaker */ return 0; } return 0; } int av7110_set_vidmode(struct av7110 *av7110, enum av7110_video_mode mode) { int ret; dprintk(2, "av7110:%p, \n", av7110); ret = av7110_fw_cmd(av7110, COMTYPE_ENCODER, LoadVidCode, 1, mode); if (!ret && !av7110->playing) { ret = ChangePIDs(av7110, av7110->pids[DMX_PES_VIDEO], av7110->pids[DMX_PES_AUDIO], av7110->pids[DMX_PES_TELETEXT], 0, av7110->pids[DMX_PES_PCR]); if (!ret) ret = av7110_fw_cmd(av7110, COMTYPE_PIDFILTER, Scan, 0); } return ret; } static enum av7110_video_mode sw2mode[16] = { AV7110_VIDEO_MODE_PAL, AV7110_VIDEO_MODE_NTSC, AV7110_VIDEO_MODE_NTSC, AV7110_VIDEO_MODE_PAL, AV7110_VIDEO_MODE_NTSC, AV7110_VIDEO_MODE_NTSC, AV7110_VIDEO_MODE_PAL, AV7110_VIDEO_MODE_NTSC, AV7110_VIDEO_MODE_PAL, AV7110_VIDEO_MODE_PAL, AV7110_VIDEO_MODE_PAL, AV7110_VIDEO_MODE_PAL, AV7110_VIDEO_MODE_PAL, AV7110_VIDEO_MODE_PAL, AV7110_VIDEO_MODE_PAL, AV7110_VIDEO_MODE_PAL, }; static int get_video_format(struct av7110 *av7110, u8 *buf, int count) { int i; int hsize, vsize; int sw; u8 *p; int ret = 0; dprintk(2, "av7110:%p, \n", av7110); if (av7110->sinfo) return 0; for (i = 7; i < count - 10; i++) { p = buf + i; if (p[0] || p[1] || p[2] != 0x01 || p[3] != 0xb3) continue; p += 4; hsize = ((p[1] &0xF0) >> 4) | (p[0] << 4); vsize = ((p[1] &0x0F) << 8) | (p[2]); sw = (p[3] & 0x0F); ret = av7110_set_vidmode(av7110, sw2mode[sw]); if (!ret) { dprintk(2, "playback %dx%d fr=%d\n", hsize, vsize, sw); av7110->sinfo = 1; } break; } return ret; } /**************************************************************************** * I/O buffer management and control ****************************************************************************/ static inline long aux_ring_buffer_write(struct dvb_ringbuffer *rbuf, const u8 *buf, unsigned long count) { unsigned long todo = count; int free; while (todo > 0) { if (dvb_ringbuffer_free(rbuf) < 2048) { if (wait_event_interruptible(rbuf->queue, (dvb_ringbuffer_free(rbuf) >= 2048))) return count - todo; } free = dvb_ringbuffer_free(rbuf); if (free > todo) free = todo; dvb_ringbuffer_write(rbuf, buf, free); todo -= free; buf += free; } return count - todo; } static void play_video_cb(u8 *buf, int count, void *priv) { struct av7110 *av7110 = (struct av7110 *) priv; dprintk(2, "av7110:%p, \n", av7110); if ((buf[3] & 0xe0) == 0xe0) { get_video_format(av7110, buf, count); aux_ring_buffer_write(&av7110->avout, buf, count); } else aux_ring_buffer_write(&av7110->aout, buf, count); } static void play_audio_cb(u8 *buf, int count, void *priv) { struct av7110 *av7110 = (struct av7110 *) priv; dprintk(2, "av7110:%p, \n", av7110); aux_ring_buffer_write(&av7110->aout, buf, count); } #define FREE_COND_TS (dvb_ringbuffer_free(rb) >= 4096) static ssize_t ts_play(struct av7110 *av7110, const char __user *buf, unsigned long count, int nonblock, int type) { struct dvb_ringbuffer *rb; u8 *kb; unsigned long todo = count; dprintk(2, "%s: type %d cnt %lu\n", __func__, type, count); rb = (type) ? &av7110->avout : &av7110->aout; kb = av7110->kbuf[type]; if (!kb) return -ENOBUFS; if (nonblock && !FREE_COND_TS) return -EWOULDBLOCK; while (todo >= TS_SIZE) { if (!FREE_COND_TS) { if (nonblock) return count - todo; if (wait_event_interruptible(rb->queue, FREE_COND_TS)) return count - todo; } if (copy_from_user(kb, buf, TS_SIZE)) return -EFAULT; write_ts_to_decoder(av7110, type, kb, TS_SIZE); todo -= TS_SIZE; buf += TS_SIZE; } return count - todo; } #define FREE_COND (dvb_ringbuffer_free(&av7110->avout) >= 20 * 1024 && \ dvb_ringbuffer_free(&av7110->aout) >= 20 * 1024) static ssize_t dvb_play(struct av7110 *av7110, const char __user *buf, unsigned long count, int nonblock, int type) { unsigned long todo = count, n; dprintk(2, "av7110:%p, \n", av7110); if (!av7110->kbuf[type]) return -ENOBUFS; if (nonblock && !FREE_COND) return -EWOULDBLOCK; while (todo > 0) { if (!FREE_COND) { if (nonblock) return count - todo; if (wait_event_interruptible(av7110->avout.queue, FREE_COND)) return count - todo; } n = todo; if (n > IPACKS * 2) n = IPACKS * 2; if (copy_from_user(av7110->kbuf[type], buf, n)) return -EFAULT; av7110_ipack_instant_repack(av7110->kbuf[type], n, &av7110->ipack[type]); todo -= n; buf += n; } return count - todo; } static ssize_t dvb_play_kernel(struct av7110 *av7110, const u8 *buf, unsigned long count, int nonblock, int type) { unsigned long todo = count, n; dprintk(2, "av7110:%p, \n", av7110); if (!av7110->kbuf[type]) return -ENOBUFS; if (nonblock && !FREE_COND) return -EWOULDBLOCK; while (todo > 0) { if (!FREE_COND) { if (nonblock) return count - todo; if (wait_event_interruptible(av7110->avout.queue, FREE_COND)) return count - todo; } n = todo; if (n > IPACKS * 2) n = IPACKS * 2; av7110_ipack_instant_repack(buf, n, &av7110->ipack[type]); todo -= n; buf += n; } return count - todo; } static ssize_t dvb_aplay(struct av7110 *av7110, const char __user *buf, unsigned long count, int nonblock, int type) { unsigned long todo = count, n; dprintk(2, "av7110:%p, \n", av7110); if (!av7110->kbuf[type]) return -ENOBUFS; if (nonblock && dvb_ringbuffer_free(&av7110->aout) < 20 * 1024) return -EWOULDBLOCK; while (todo > 0) { if (dvb_ringbuffer_free(&av7110->aout) < 20 * 1024) { if (nonblock) return count - todo; if (wait_event_interruptible(av7110->aout.queue, (dvb_ringbuffer_free(&av7110->aout) >= 20 * 1024))) return count-todo; } n = todo; if (n > IPACKS * 2) n = IPACKS * 2; if (copy_from_user(av7110->kbuf[type], buf, n)) return -EFAULT; av7110_ipack_instant_repack(av7110->kbuf[type], n, &av7110->ipack[type]); todo -= n; buf += n; } return count - todo; } void av7110_p2t_init(struct av7110_p2t *p, struct dvb_demux_feed *feed) { memset(p->pes, 0, TS_SIZE); p->counter = 0; p->pos = 0; p->frags = 0; if (feed) p->feed = feed; } static void clear_p2t(struct av7110_p2t *p) { memset(p->pes, 0, TS_SIZE); // p->counter = 0; p->pos = 0; p->frags = 0; } static int find_pes_header(u8 const *buf, long int length, int *frags) { int c = 0; int found = 0; *frags = 0; while (c < length - 3 && !found) { if (buf[c] == 0x00 && buf[c + 1] == 0x00 && buf[c + 2] == 0x01) { switch ( buf[c + 3] ) { case PROG_STREAM_MAP: case PRIVATE_STREAM2: case PROG_STREAM_DIR: case ECM_STREAM : case EMM_STREAM : case PADDING_STREAM : case DSM_CC_STREAM : case ISO13522_STREAM: case PRIVATE_STREAM1: case AUDIO_STREAM_S ... AUDIO_STREAM_E: case VIDEO_STREAM_S ... VIDEO_STREAM_E: found = 1; break; default: c++; break; } } else c++; } if (c == length - 3 && !found) { if (buf[length - 1] == 0x00) *frags = 1; if (buf[length - 2] == 0x00 && buf[length - 1] == 0x00) *frags = 2; if (buf[length - 3] == 0x00 && buf[length - 2] == 0x00 && buf[length - 1] == 0x01) *frags = 3; return -1; } return c; } void av7110_p2t_write(u8 const *buf, long int length, u16 pid, struct av7110_p2t *p) { int c, c2, l, add; int check, rest; c = 0; c2 = 0; if (p->frags){ check = 0; switch(p->frags) { case 1: if (buf[c] == 0x00 && buf[c + 1] == 0x01) { check = 1; c += 2; } break; case 2: if (buf[c] == 0x01) { check = 1; c++; } break; case 3: check = 1; } if (check) { switch (buf[c]) { case PROG_STREAM_MAP: case PRIVATE_STREAM2: case PROG_STREAM_DIR: case ECM_STREAM : case EMM_STREAM : case PADDING_STREAM : case DSM_CC_STREAM : case ISO13522_STREAM: case PRIVATE_STREAM1: case AUDIO_STREAM_S ... AUDIO_STREAM_E: case VIDEO_STREAM_S ... VIDEO_STREAM_E: p->pes[0] = 0x00; p->pes[1] = 0x00; p->pes[2] = 0x01; p->pes[3] = buf[c]; p->pos = 4; memcpy(p->pes + p->pos, buf + c, (TS_SIZE - 4) - p->pos); c += (TS_SIZE - 4) - p->pos; p_to_t(p->pes, (TS_SIZE - 4), pid, &p->counter, p->feed); clear_p2t(p); break; default: c = 0; break; } } p->frags = 0; } if (p->pos) { c2 = find_pes_header(buf + c, length - c, &p->frags); if (c2 >= 0 && c2 < (TS_SIZE - 4) - p->pos) l = c2+c; else l = (TS_SIZE - 4) - p->pos; memcpy(p->pes + p->pos, buf, l); c += l; p->pos += l; p_to_t(p->pes, p->pos, pid, &p->counter, p->feed); clear_p2t(p); } add = 0; while (c < length) { c2 = find_pes_header(buf + c + add, length - c - add, &p->frags); if (c2 >= 0) { c2 += c + add; if (c2 > c){ p_to_t(buf + c, c2 - c, pid, &p->counter, p->feed); c = c2; clear_p2t(p); add = 0; } else add = 1; } else { l = length - c; rest = l % (TS_SIZE - 4); l -= rest; p_to_t(buf + c, l, pid, &p->counter, p->feed); memcpy(p->pes, buf + c + l, rest); p->pos = rest; c = length; } } } static int write_ts_header2(u16 pid, u8 *counter, int pes_start, u8 *buf, u8 length) { int i; int c = 0; int fill; u8 tshead[4] = { 0x47, 0x00, 0x00, 0x10 }; fill = (TS_SIZE - 4) - length; if (pes_start) tshead[1] = 0x40; if (fill) tshead[3] = 0x30; tshead[1] |= (u8)((pid & 0x1F00) >> 8); tshead[2] |= (u8)(pid & 0x00FF); tshead[3] |= ((*counter)++ & 0x0F); memcpy(buf, tshead, 4); c += 4; if (fill) { buf[4] = fill - 1; c++; if (fill > 1) { buf[5] = 0x00; c++; } for (i = 6; i < fill + 4; i++) { buf[i] = 0xFF; c++; } } return c; } static void p_to_t(u8 const *buf, long int length, u16 pid, u8 *counter, struct dvb_demux_feed *feed) { int l, pes_start; u8 obuf[TS_SIZE]; long c = 0; pes_start = 0; if (length > 3 && buf[0] == 0x00 && buf[1] == 0x00 && buf[2] == 0x01) switch (buf[3]) { case PROG_STREAM_MAP: case PRIVATE_STREAM2: case PROG_STREAM_DIR: case ECM_STREAM : case EMM_STREAM : case PADDING_STREAM : case DSM_CC_STREAM : case ISO13522_STREAM: case PRIVATE_STREAM1: case AUDIO_STREAM_S ... AUDIO_STREAM_E: case VIDEO_STREAM_S ... VIDEO_STREAM_E: pes_start = 1; break; default: break; } while (c < length) { memset(obuf, 0, TS_SIZE); if (length - c >= (TS_SIZE - 4)){ l = write_ts_header2(pid, counter, pes_start, obuf, (TS_SIZE - 4)); memcpy(obuf + l, buf + c, TS_SIZE - l); c += TS_SIZE - l; } else { l = write_ts_header2(pid, counter, pes_start, obuf, length - c); memcpy(obuf + l, buf + c, TS_SIZE - l); c = length; } feed->cb.ts(obuf, 188, NULL, 0, &feed->feed.ts, NULL); pes_start = 0; } } static int write_ts_to_decoder(struct av7110 *av7110, int type, const u8 *buf, size_t len) { struct ipack *ipack = &av7110->ipack[type]; if (buf[1] & TRANS_ERROR) { av7110_ipack_reset(ipack); return -1; } if (!(buf[3] & PAYLOAD)) return -1; if (buf[1] & PAY_START) av7110_ipack_flush(ipack); if (buf[3] & ADAPT_FIELD) { if (buf[4] > len - 1 - 4) return 0; len -= buf[4] + 1; buf += buf[4] + 1; } av7110_ipack_instant_repack(buf + 4, len - 4, ipack); return 0; } int av7110_write_to_decoder(struct dvb_demux_feed *feed, const u8 *buf, size_t len) { struct dvb_demux *demux = feed->demux; struct av7110 *av7110 = (struct av7110 *) demux->priv; dprintk(2, "av7110:%p, \n", av7110); if (av7110->full_ts && demux->dmx.frontend->source != DMX_MEMORY_FE) return 0; switch (feed->pes_type) { case 0: if (av7110->audiostate.stream_source == AUDIO_SOURCE_MEMORY) return -EINVAL; break; case 1: if (av7110->videostate.stream_source == VIDEO_SOURCE_MEMORY) return -EINVAL; break; default: return -1; } return write_ts_to_decoder(av7110, feed->pes_type, buf, len); } /****************************************************************************** * Video MPEG decoder events ******************************************************************************/ void dvb_video_add_event(struct av7110 *av7110, struct video_event *event) { struct dvb_video_events *events = &av7110->video_events; int wp; spin_lock_bh(&events->lock); wp = (events->eventw + 1) % MAX_VIDEO_EVENT; if (wp == events->eventr) { events->overflow = 1; events->eventr = (events->eventr + 1) % MAX_VIDEO_EVENT; } //FIXME: timestamp? memcpy(&events->events[events->eventw], event, sizeof(struct video_event)); events->eventw = wp; spin_unlock_bh(&events->lock); wake_up_interruptible(&events->wait_queue); } static int dvb_video_get_event (struct av7110 *av7110, struct video_event *event, int flags) { struct dvb_video_events *events = &av7110->video_events; if (events->overflow) { events->overflow = 0; return -EOVERFLOW; } if (events->eventw == events->eventr) { int ret; if (flags & O_NONBLOCK) return -EWOULDBLOCK; ret = wait_event_interruptible(events->wait_queue, events->eventw != events->eventr); if (ret < 0) return ret; } spin_lock_bh(&events->lock); memcpy(event, &events->events[events->eventr], sizeof(struct video_event)); events->eventr = (events->eventr + 1) % MAX_VIDEO_EVENT; spin_unlock_bh(&events->lock); return 0; } /****************************************************************************** * DVB device file operations ******************************************************************************/ static __poll_t dvb_video_poll(struct file *file, poll_table *wait) { struct dvb_device *dvbdev = file->private_data; struct av7110 *av7110 = dvbdev->priv; __poll_t mask = 0; dprintk(2, "av7110:%p, \n", av7110); if ((file->f_flags & O_ACCMODE) != O_RDONLY) poll_wait(file, &av7110->avout.queue, wait); poll_wait(file, &av7110->video_events.wait_queue, wait); if (av7110->video_events.eventw != av7110->video_events.eventr) mask = EPOLLPRI; if ((file->f_flags & O_ACCMODE) != O_RDONLY) { if (av7110->playing) { if (FREE_COND) mask |= (EPOLLOUT | EPOLLWRNORM); } else { /* if not playing: may play if asked for */ mask |= (EPOLLOUT | EPOLLWRNORM); } } return mask; } static ssize_t dvb_video_write(struct file *file, const char __user *buf, size_t count, loff_t *ppos) { struct dvb_device *dvbdev = file->private_data; struct av7110 *av7110 = dvbdev->priv; unsigned char c; dprintk(2, "av7110:%p, \n", av7110); if ((file->f_flags & O_ACCMODE) == O_RDONLY) return -EPERM; if (av7110->videostate.stream_source != VIDEO_SOURCE_MEMORY) return -EPERM; if (get_user(c, buf)) return -EFAULT; if (c == 0x47 && count % TS_SIZE == 0) return ts_play(av7110, buf, count, file->f_flags & O_NONBLOCK, 1); else return dvb_play(av7110, buf, count, file->f_flags & O_NONBLOCK, 1); } static __poll_t dvb_audio_poll(struct file *file, poll_table *wait) { struct dvb_device *dvbdev = file->private_data; struct av7110 *av7110 = dvbdev->priv; __poll_t mask = 0; dprintk(2, "av7110:%p, \n", av7110); poll_wait(file, &av7110->aout.queue, wait); if (av7110->playing) { if (dvb_ringbuffer_free(&av7110->aout) >= 20 * 1024) mask |= (EPOLLOUT | EPOLLWRNORM); } else /* if not playing: may play if asked for */ mask = (EPOLLOUT | EPOLLWRNORM); return mask; } static ssize_t dvb_audio_write(struct file *file, const char __user *buf, size_t count, loff_t *ppos) { struct dvb_device *dvbdev = file->private_data; struct av7110 *av7110 = dvbdev->priv; unsigned char c; dprintk(2, "av7110:%p, \n", av7110); if (av7110->audiostate.stream_source != AUDIO_SOURCE_MEMORY) { printk(KERN_ERR "not audio source memory\n"); return -EPERM; } if (get_user(c, buf)) return -EFAULT; if (c == 0x47 && count % TS_SIZE == 0) return ts_play(av7110, buf, count, file->f_flags & O_NONBLOCK, 0); else return dvb_aplay(av7110, buf, count, file->f_flags & O_NONBLOCK, 0); } static u8 iframe_header[] = { 0x00, 0x00, 0x01, 0xe0, 0x00, 0x00, 0x80, 0x00, 0x00 }; #define MIN_IFRAME 400000 static int play_iframe(struct av7110 *av7110, char __user *buf, unsigned int len, int nonblock) { unsigned i, n; int progressive = 0; int match = 0; dprintk(2, "av7110:%p, \n", av7110); if (len == 0) return 0; if (!(av7110->playing & RP_VIDEO)) { if (av7110_av_start_play(av7110, RP_VIDEO) < 0) return -EBUSY; } /* search in buf for instances of 00 00 01 b5 1? */ for (i = 0; i < len; i++) { unsigned char c; if (get_user(c, buf + i)) return -EFAULT; if (match == 5) { progressive = c & 0x08; match = 0; } if (c == 0x00) { match = (match == 1 || match == 2) ? 2 : 1; continue; } switch (match++) { case 2: if (c == 0x01) continue; break; case 3: if (c == 0xb5) continue; break; case 4: if ((c & 0xf0) == 0x10) continue; break; } match = 0; } /* setting n always > 1, fixes problems when playing stillframes consisting of I- and P-Frames */ n = MIN_IFRAME / len + 1; /* FIXME: nonblock? */ dvb_play_kernel(av7110, iframe_header, sizeof(iframe_header), 0, 1); for (i = 0; i < n; i++) dvb_play(av7110, buf, len, 0, 1); av7110_ipack_flush(&av7110->ipack[1]); if (progressive) return vidcom(av7110, AV_VIDEO_CMD_FREEZE, 1); else return 0; } #ifdef CONFIG_COMPAT struct compat_video_still_picture { compat_uptr_t iFrame; int32_t size; }; #define VIDEO_STILLPICTURE32 _IOW('o', 30, struct compat_video_still_picture) struct compat_video_event { __s32 type; /* unused, make sure to use atomic time for y2038 if it ever gets used */ compat_long_t timestamp; union { video_size_t size; unsigned int frame_rate; /* in frames per 1000sec */ unsigned char vsync_field; /* unknown/odd/even/progressive */ } u; }; #define VIDEO_GET_EVENT32 _IOR('o', 28, struct compat_video_event) static int dvb_compat_video_get_event(struct av7110 *av7110, struct compat_video_event *event, int flags) { struct video_event ev; int ret; ret = dvb_video_get_event(av7110, &ev, flags); *event = (struct compat_video_event) { .type = ev.type, .timestamp = ev.timestamp, .u.size = ev.u.size, }; return ret; } #endif static int dvb_video_ioctl(struct file *file, unsigned int cmd, void *parg) { struct dvb_device *dvbdev = file->private_data; struct av7110 *av7110 = dvbdev->priv; unsigned long arg = (unsigned long) parg; int ret = 0; dprintk(1, "av7110:%p, cmd=%04x\n", av7110,cmd); if ((file->f_flags & O_ACCMODE) == O_RDONLY) { if ( cmd != VIDEO_GET_STATUS && cmd != VIDEO_GET_EVENT && cmd != VIDEO_GET_SIZE ) { return -EPERM; } } if (mutex_lock_interruptible(&av7110->ioctl_mutex)) return -ERESTARTSYS; switch (cmd) { case VIDEO_STOP: av7110->videostate.play_state = VIDEO_STOPPED; if (av7110->videostate.stream_source == VIDEO_SOURCE_MEMORY) ret = av7110_av_stop(av7110, RP_VIDEO); else ret = vidcom(av7110, AV_VIDEO_CMD_STOP, av7110->videostate.video_blank ? 0 : 1); if (!ret) av7110->trickmode = TRICK_NONE; break; case VIDEO_PLAY: av7110->trickmode = TRICK_NONE; if (av7110->videostate.play_state == VIDEO_FREEZED) { av7110->videostate.play_state = VIDEO_PLAYING; ret = vidcom(av7110, AV_VIDEO_CMD_PLAY, 0); if (ret) break; } if (av7110->videostate.stream_source == VIDEO_SOURCE_MEMORY) { if (av7110->playing == RP_AV) { ret = av7110_fw_cmd(av7110, COMTYPE_REC_PLAY, __Stop, 0); if (ret) break; av7110->playing &= ~RP_VIDEO; } ret = av7110_av_start_play(av7110, RP_VIDEO); } if (!ret) ret = vidcom(av7110, AV_VIDEO_CMD_PLAY, 0); if (!ret) av7110->videostate.play_state = VIDEO_PLAYING; break; case VIDEO_FREEZE: av7110->videostate.play_state = VIDEO_FREEZED; if (av7110->playing & RP_VIDEO) ret = av7110_fw_cmd(av7110, COMTYPE_REC_PLAY, __Pause, 0); else ret = vidcom(av7110, AV_VIDEO_CMD_FREEZE, 1); if (!ret) av7110->trickmode = TRICK_FREEZE; break; case VIDEO_CONTINUE: if (av7110->playing & RP_VIDEO) ret = av7110_fw_cmd(av7110, COMTYPE_REC_PLAY, __Continue, 0); if (!ret) ret = vidcom(av7110, AV_VIDEO_CMD_PLAY, 0); if (!ret) { av7110->videostate.play_state = VIDEO_PLAYING; av7110->trickmode = TRICK_NONE; } break; case VIDEO_SELECT_SOURCE: av7110->videostate.stream_source = (video_stream_source_t) arg; break; case VIDEO_SET_BLANK: av7110->videostate.video_blank = (int) arg; break; case VIDEO_GET_STATUS: memcpy(parg, &av7110->videostate, sizeof(struct video_status)); break; #ifdef CONFIG_COMPAT case VIDEO_GET_EVENT32: ret = dvb_compat_video_get_event(av7110, parg, file->f_flags); break; #endif case VIDEO_GET_EVENT: ret = dvb_video_get_event(av7110, parg, file->f_flags); break; case VIDEO_GET_SIZE: memcpy(parg, &av7110->video_size, sizeof(video_size_t)); break; case VIDEO_SET_DISPLAY_FORMAT: { video_displayformat_t format = (video_displayformat_t) arg; switch (format) { case VIDEO_PAN_SCAN: av7110->display_panscan = VID_PAN_SCAN_PREF; break; case VIDEO_LETTER_BOX: av7110->display_panscan = VID_VC_AND_PS_PREF; break; case VIDEO_CENTER_CUT_OUT: av7110->display_panscan = VID_CENTRE_CUT_PREF; break; default: ret = -EINVAL; } if (ret < 0) break; av7110->videostate.display_format = format; ret = av7110_fw_cmd(av7110, COMTYPE_ENCODER, SetPanScanType, 1, av7110->display_panscan); break; } case VIDEO_SET_FORMAT: if (arg > 1) { ret = -EINVAL; break; } av7110->display_ar = arg; ret = av7110_fw_cmd(av7110, COMTYPE_ENCODER, SetMonitorType, 1, (u16) arg); break; #ifdef CONFIG_COMPAT case VIDEO_STILLPICTURE32: { struct compat_video_still_picture *pic = (struct compat_video_still_picture *) parg; av7110->videostate.stream_source = VIDEO_SOURCE_MEMORY; dvb_ringbuffer_flush_spinlock_wakeup(&av7110->avout); ret = play_iframe(av7110, compat_ptr(pic->iFrame), pic->size, file->f_flags & O_NONBLOCK); break; } #endif case VIDEO_STILLPICTURE: { struct video_still_picture *pic = (struct video_still_picture *) parg; av7110->videostate.stream_source = VIDEO_SOURCE_MEMORY; dvb_ringbuffer_flush_spinlock_wakeup(&av7110->avout); ret = play_iframe(av7110, pic->iFrame, pic->size, file->f_flags & O_NONBLOCK); break; } case VIDEO_FAST_FORWARD: //note: arg is ignored by firmware if (av7110->playing & RP_VIDEO) ret = av7110_fw_cmd(av7110, COMTYPE_REC_PLAY, __Scan_I, 2, AV_PES, 0); else ret = vidcom(av7110, AV_VIDEO_CMD_FFWD, arg); if (!ret) { av7110->trickmode = TRICK_FAST; av7110->videostate.play_state = VIDEO_PLAYING; } break; case VIDEO_SLOWMOTION: if (av7110->playing&RP_VIDEO) { if (av7110->trickmode != TRICK_SLOW) ret = av7110_fw_cmd(av7110, COMTYPE_REC_PLAY, __Slow, 2, 0, 0); if (!ret) ret = vidcom(av7110, AV_VIDEO_CMD_SLOW, arg); } else { ret = vidcom(av7110, AV_VIDEO_CMD_PLAY, 0); if (!ret) ret = vidcom(av7110, AV_VIDEO_CMD_STOP, 0); if (!ret) ret = vidcom(av7110, AV_VIDEO_CMD_SLOW, arg); } if (!ret) { av7110->trickmode = TRICK_SLOW; av7110->videostate.play_state = VIDEO_PLAYING; } break; case VIDEO_GET_CAPABILITIES: *(int *)parg = VIDEO_CAP_MPEG1 | VIDEO_CAP_MPEG2 | VIDEO_CAP_SYS | VIDEO_CAP_PROG; break; case VIDEO_CLEAR_BUFFER: dvb_ringbuffer_flush_spinlock_wakeup(&av7110->avout); av7110_ipack_reset(&av7110->ipack[1]); if (av7110->playing == RP_AV) { ret = av7110_fw_cmd(av7110, COMTYPE_REC_PLAY, __Play, 2, AV_PES, 0); if (ret) break; if (av7110->trickmode == TRICK_FAST) ret = av7110_fw_cmd(av7110, COMTYPE_REC_PLAY, __Scan_I, 2, AV_PES, 0); if (av7110->trickmode == TRICK_SLOW) { ret = av7110_fw_cmd(av7110, COMTYPE_REC_PLAY, __Slow, 2, 0, 0); if (!ret) ret = vidcom(av7110, AV_VIDEO_CMD_SLOW, arg); } if (av7110->trickmode == TRICK_FREEZE) ret = vidcom(av7110, AV_VIDEO_CMD_STOP, 1); } break; case VIDEO_SET_STREAMTYPE: break; default: ret = -ENOIOCTLCMD; break; } mutex_unlock(&av7110->ioctl_mutex); return ret; } static int dvb_audio_ioctl(struct file *file, unsigned int cmd, void *parg) { struct dvb_device *dvbdev = file->private_data; struct av7110 *av7110 = dvbdev->priv; unsigned long arg = (unsigned long) parg; int ret = 0; dprintk(1, "av7110:%p, cmd=%04x\n", av7110,cmd); if (((file->f_flags & O_ACCMODE) == O_RDONLY) && (cmd != AUDIO_GET_STATUS)) return -EPERM; if (mutex_lock_interruptible(&av7110->ioctl_mutex)) return -ERESTARTSYS; switch (cmd) { case AUDIO_STOP: if (av7110->audiostate.stream_source == AUDIO_SOURCE_MEMORY) ret = av7110_av_stop(av7110, RP_AUDIO); else ret = audcom(av7110, AUDIO_CMD_MUTE); if (!ret) av7110->audiostate.play_state = AUDIO_STOPPED; break; case AUDIO_PLAY: if (av7110->audiostate.stream_source == AUDIO_SOURCE_MEMORY) ret = av7110_av_start_play(av7110, RP_AUDIO); if (!ret) ret = audcom(av7110, AUDIO_CMD_UNMUTE); if (!ret) av7110->audiostate.play_state = AUDIO_PLAYING; break; case AUDIO_PAUSE: ret = audcom(av7110, AUDIO_CMD_MUTE); if (!ret) av7110->audiostate.play_state = AUDIO_PAUSED; break; case AUDIO_CONTINUE: if (av7110->audiostate.play_state == AUDIO_PAUSED) { av7110->audiostate.play_state = AUDIO_PLAYING; ret = audcom(av7110, AUDIO_CMD_UNMUTE | AUDIO_CMD_PCM16); } break; case AUDIO_SELECT_SOURCE: av7110->audiostate.stream_source = (audio_stream_source_t) arg; break; case AUDIO_SET_MUTE: { ret = audcom(av7110, arg ? AUDIO_CMD_MUTE : AUDIO_CMD_UNMUTE); if (!ret) av7110->audiostate.mute_state = (int) arg; break; } case AUDIO_SET_AV_SYNC: av7110->audiostate.AV_sync_state = (int) arg; ret = audcom(av7110, arg ? AUDIO_CMD_SYNC_ON : AUDIO_CMD_SYNC_OFF); break; case AUDIO_SET_BYPASS_MODE: if (FW_VERSION(av7110->arm_app) < 0x2621) ret = -EINVAL; av7110->audiostate.bypass_mode = (int)arg; break; case AUDIO_CHANNEL_SELECT: av7110->audiostate.channel_select = (audio_channel_select_t) arg; switch(av7110->audiostate.channel_select) { case AUDIO_STEREO: ret = audcom(av7110, AUDIO_CMD_STEREO); if (!ret) { if (av7110->adac_type == DVB_ADAC_CRYSTAL) i2c_writereg(av7110, 0x20, 0x02, 0x49); else if (av7110->adac_type == DVB_ADAC_MSP34x5) msp_writereg(av7110, MSP_WR_DSP, 0x0008, 0x0220); } break; case AUDIO_MONO_LEFT: ret = audcom(av7110, AUDIO_CMD_MONO_L); if (!ret) { if (av7110->adac_type == DVB_ADAC_CRYSTAL) i2c_writereg(av7110, 0x20, 0x02, 0x4a); else if (av7110->adac_type == DVB_ADAC_MSP34x5) msp_writereg(av7110, MSP_WR_DSP, 0x0008, 0x0200); } break; case AUDIO_MONO_RIGHT: ret = audcom(av7110, AUDIO_CMD_MONO_R); if (!ret) { if (av7110->adac_type == DVB_ADAC_CRYSTAL) i2c_writereg(av7110, 0x20, 0x02, 0x45); else if (av7110->adac_type == DVB_ADAC_MSP34x5) msp_writereg(av7110, MSP_WR_DSP, 0x0008, 0x0210); } break; default: ret = -EINVAL; break; } break; case AUDIO_GET_STATUS: memcpy(parg, &av7110->audiostate, sizeof(struct audio_status)); break; case AUDIO_GET_CAPABILITIES: if (FW_VERSION(av7110->arm_app) < 0x2621) *(unsigned int *)parg = AUDIO_CAP_LPCM | AUDIO_CAP_MP1 | AUDIO_CAP_MP2; else *(unsigned int *)parg = AUDIO_CAP_LPCM | AUDIO_CAP_DTS | AUDIO_CAP_AC3 | AUDIO_CAP_MP1 | AUDIO_CAP_MP2; break; case AUDIO_CLEAR_BUFFER: dvb_ringbuffer_flush_spinlock_wakeup(&av7110->aout); av7110_ipack_reset(&av7110->ipack[0]); if (av7110->playing == RP_AV) ret = av7110_fw_cmd(av7110, COMTYPE_REC_PLAY, __Play, 2, AV_PES, 0); break; case AUDIO_SET_ID: break; case AUDIO_SET_MIXER: { struct audio_mixer *amix = (struct audio_mixer *)parg; ret = av7110_set_volume(av7110, amix->volume_left, amix->volume_right); break; } case AUDIO_SET_STREAMTYPE: break; default: ret = -ENOIOCTLCMD; } mutex_unlock(&av7110->ioctl_mutex); return ret; } static int dvb_video_open(struct inode *inode, struct file *file) { struct dvb_device *dvbdev = file->private_data; struct av7110 *av7110 = dvbdev->priv; int err; dprintk(2, "av7110:%p, \n", av7110); if ((err = dvb_generic_open(inode, file)) < 0) return err; if ((file->f_flags & O_ACCMODE) != O_RDONLY) { dvb_ringbuffer_flush_spinlock_wakeup(&av7110->aout); dvb_ringbuffer_flush_spinlock_wakeup(&av7110->avout); av7110->video_blank = 1; av7110->audiostate.AV_sync_state = 1; av7110->videostate.stream_source = VIDEO_SOURCE_DEMUX; /* empty event queue */ av7110->video_events.eventr = av7110->video_events.eventw = 0; } return 0; } static int dvb_video_release(struct inode *inode, struct file *file) { struct dvb_device *dvbdev = file->private_data; struct av7110 *av7110 = dvbdev->priv; dprintk(2, "av7110:%p, \n", av7110); if ((file->f_flags & O_ACCMODE) != O_RDONLY) { av7110_av_stop(av7110, RP_VIDEO); } return dvb_generic_release(inode, file); } static int dvb_audio_open(struct inode *inode, struct file *file) { struct dvb_device *dvbdev = file->private_data; struct av7110 *av7110 = dvbdev->priv; int err = dvb_generic_open(inode, file); dprintk(2, "av7110:%p, \n", av7110); if (err < 0) return err; dvb_ringbuffer_flush_spinlock_wakeup(&av7110->aout); av7110->audiostate.stream_source = AUDIO_SOURCE_DEMUX; return 0; } static int dvb_audio_release(struct inode *inode, struct file *file) { struct dvb_device *dvbdev = file->private_data; struct av7110 *av7110 = dvbdev->priv; dprintk(2, "av7110:%p, \n", av7110); av7110_av_stop(av7110, RP_AUDIO); return dvb_generic_release(inode, file); } /****************************************************************************** * driver registration ******************************************************************************/ static const struct file_operations dvb_video_fops = { .owner = THIS_MODULE, .write = dvb_video_write, .unlocked_ioctl = dvb_generic_ioctl, .compat_ioctl = dvb_generic_ioctl, .open = dvb_video_open, .release = dvb_video_release, .poll = dvb_video_poll, .llseek = noop_llseek, }; static struct dvb_device dvbdev_video = { .priv = NULL, .users = 6, .readers = 5, /* arbitrary */ .writers = 1, .fops = &dvb_video_fops, .kernel_ioctl = dvb_video_ioctl, }; static const struct file_operations dvb_audio_fops = { .owner = THIS_MODULE, .write = dvb_audio_write, .unlocked_ioctl = dvb_generic_ioctl, .compat_ioctl = dvb_generic_ioctl, .open = dvb_audio_open, .release = dvb_audio_release, .poll = dvb_audio_poll, .llseek = noop_llseek, }; static struct dvb_device dvbdev_audio = { .priv = NULL, .users = 1, .writers = 1, .fops = &dvb_audio_fops, .kernel_ioctl = dvb_audio_ioctl, }; int av7110_av_register(struct av7110 *av7110) { av7110->audiostate.AV_sync_state = 0; av7110->audiostate.mute_state = 0; av7110->audiostate.play_state = AUDIO_STOPPED; av7110->audiostate.stream_source = AUDIO_SOURCE_DEMUX; av7110->audiostate.channel_select = AUDIO_STEREO; av7110->audiostate.bypass_mode = 0; av7110->videostate.video_blank = 0; av7110->videostate.play_state = VIDEO_STOPPED; av7110->videostate.stream_source = VIDEO_SOURCE_DEMUX; av7110->videostate.video_format = VIDEO_FORMAT_4_3; av7110->videostate.display_format = VIDEO_LETTER_BOX; av7110->display_ar = VIDEO_FORMAT_4_3; av7110->display_panscan = VID_VC_AND_PS_PREF; init_waitqueue_head(&av7110->video_events.wait_queue); spin_lock_init(&av7110->video_events.lock); av7110->video_events.eventw = av7110->video_events.eventr = 0; av7110->video_events.overflow = 0; memset(&av7110->video_size, 0, sizeof (video_size_t)); dvb_register_device(&av7110->dvb_adapter, &av7110->video_dev, &dvbdev_video, av7110, DVB_DEVICE_VIDEO, 0); dvb_register_device(&av7110->dvb_adapter, &av7110->audio_dev, &dvbdev_audio, av7110, DVB_DEVICE_AUDIO, 0); return 0; } void av7110_av_unregister(struct av7110 *av7110) { dvb_unregister_device(av7110->audio_dev); dvb_unregister_device(av7110->video_dev); } int av7110_av_init(struct av7110 *av7110) { void (*play[])(u8 *, int, void *) = { play_audio_cb, play_video_cb }; int i, ret; for (i = 0; i < 2; i++) { struct ipack *ipack = av7110->ipack + i; ret = av7110_ipack_init(ipack, IPACKS, play[i]); if (ret < 0) { if (i) av7110_ipack_free(--ipack); goto out; } ipack->data = av7110; } dvb_ringbuffer_init(&av7110->avout, av7110->iobuf, AVOUTLEN); dvb_ringbuffer_init(&av7110->aout, av7110->iobuf + AVOUTLEN, AOUTLEN); av7110->kbuf[0] = (u8 *)(av7110->iobuf + AVOUTLEN + AOUTLEN + BMPLEN); av7110->kbuf[1] = av7110->kbuf[0] + 2 * IPACKS; out: return ret; } void av7110_av_exit(struct av7110 *av7110) { av7110_ipack_free(&av7110->ipack[0]); av7110_ipack_free(&av7110->ipack[1]); }