X-Git-Url: http://git.tuebingen.mpg.de/?p=paraslash.git;a=blobdiff_plain;f=oggdec_filter.c;h=07e4cec1c1d6ac99fcc482beedf77914d1d157b7;hp=0130afd04989043430e5c1d70fc11800a6d1f311;hb=6bfdc5bf94294ee8ec19c530d77ea4a0fb4e8618;hpb=645175864a613fc539f46ffa4028742aad3b1b30 diff --git a/oggdec_filter.c b/oggdec_filter.c index 0130afd0..07e4cec1 100644 --- a/oggdec_filter.c +++ b/oggdec_filter.c @@ -1,5 +1,5 @@ /* - * Copyright (C) 2005-2010 Andre Noll + * Copyright (C) 2005-2011 Andre Noll * * Licensed under the GPL v2. For licencing details see COPYING. */ @@ -35,7 +35,9 @@ struct private_oggdec_data { /** The number of channels of the current stream. */ unsigned int channels; /** Current sample rate in Hz. */ - unsigned int samplerate; + unsigned int sample_rate; + /** Whether everything was decoded during the previous iteration. */ + bool have_more; }; static size_t cb_read(void *buf, size_t size, size_t nmemb, void *datasource) @@ -92,47 +94,31 @@ static const ov_callbacks ovc = { static void ogg_open(struct filter_node *fn) { - struct private_oggdec_data *pod = para_calloc( - sizeof(struct private_oggdec_data)); - - fn->private_data = pod; + fn->private_data = para_calloc(sizeof(struct private_oggdec_data)); fn->min_iqs = 8000; } static void ogg_close(struct filter_node *fn) { struct private_oggdec_data *pod = fn->private_data; - if (pod->vf) { + + if (pod && pod->vf) { PARA_DEBUG_LOG("ov_clearing %p, pod = %p\n", pod->vf, pod); ov_clear(pod->vf); free(pod->vf); pod->vf = NULL; } else PARA_DEBUG_LOG("nothing to close\n"); - free(fn->private_data); + free(pod); fn->private_data = NULL; } -#define OGGDEC_OUTPUT_CHUNK_SIZE (64 * 1024) - static int oggdec_execute(struct btr_node *btrn, const char *cmd, char **result) { struct filter_node *fn = btr_context(btrn); struct private_oggdec_data *pod = fn->private_data; - if (!strcmp(cmd, "samplerate")) { - if (pod->samplerate == 0) - return -E_BTR_NAVAIL; - *result = make_message("%u", pod->samplerate); - return 1; - } - if (!strcmp(cmd, "channels")) { - if (pod->channels == 0) - return -E_BTR_NAVAIL; - *result = make_message("%u", pod->channels); - return 1; - } - return -ERRNO_TO_PARA_ERROR(ENOTSUP); + return decoder_execute(cmd, pod->sample_rate, pod->channels, result); } static int ogg_init(struct filter_node *fn) @@ -141,12 +127,12 @@ static int ogg_init(struct filter_node *fn) struct btr_node *btrn = fn->btrn; int ret, oret; size_t iqs; + struct OggVorbis_File *vf = para_malloc(sizeof(*vf)); - pod->vf = para_malloc(sizeof(struct OggVorbis_File)); PARA_NOTICE_LOG("iqs: %zu, min_iqs: %zu, opening ov callbacks\n", btr_get_input_queue_size(btrn), fn->min_iqs); open: - oret = ov_open_callbacks(fn, pod->vf, + oret = ov_open_callbacks(fn, vf, NULL, /* no initial buffer */ 0, /* no initial bytes */ ovc); /* the ov_open_callbacks */ @@ -176,64 +162,97 @@ open: ret = -E_OGGDEC_FAULT; if (oret < 0) goto out; - pod->channels = ov_info(pod->vf, 0)->channels; - pod->samplerate = ov_info(pod->vf, 0)->rate; + pod->channels = ov_info(vf, 0)->channels; + pod->sample_rate = ov_info(vf, 0)->rate; PARA_NOTICE_LOG("%d channels, %d Hz\n", pod->channels, - pod->samplerate); + pod->sample_rate); ret = 1; out: - if (ret <= 0) { - free(pod->vf); - pod->vf = NULL; - } else { + if (ret <= 0) + free(vf); + else { btr_consume(btrn, pod->converted); pod->converted = 0; fn->min_iqs = 0; + pod->vf = vf; + pod->have_more = true; } return ret; } +#define OGGDEC_MAX_OUTPUT_SIZE (96 * 1024) +#define OGGDEC_OUTPUT_CHUNK_SIZE (32 * 1024) + +static void ogg_pre_select(struct sched *s, struct task *t) +{ + struct filter_node *fn = container_of(t, struct filter_node, task); + struct private_oggdec_data *pod = fn->private_data; + struct btr_node *btrn = fn->btrn; + int ret; + + ret = btr_node_status(btrn, fn->min_iqs, BTR_NT_INTERNAL); + if (ret != 0) + return sched_min_delay(s); + if (!pod->have_more) + return; + if (btr_get_output_queue_size(btrn) > OGGDEC_MAX_OUTPUT_SIZE) + return; + sched_min_delay(s); +} + static void ogg_post_select(__a_unused struct sched *s, struct task *t) { struct filter_node *fn = container_of(t, struct filter_node, task); struct private_oggdec_data *pod = fn->private_data; struct btr_node *btrn = fn->btrn; - int ret, ns; + int ret, have; + char *buf; - pod->converted = 0; - t->error = 0; - ret = ns = btr_node_status(btrn, fn->min_iqs, BTR_NT_INTERNAL); + ret = btr_node_status(btrn, fn->min_iqs, BTR_NT_INTERNAL); + if (ret < 0 && ret != -E_BTR_EOF) /* fatal error */ + goto out; + if (ret <= 0 && !pod->have_more) /* nothing to do */ + goto out; if (!pod->vf) { if (ret <= 0) goto out; btr_merge(btrn, fn->min_iqs); ret = ogg_init(fn); - if (ret <= 0) - goto out; + goto out; } + have = 0; + buf = para_malloc(OGGDEC_OUTPUT_CHUNK_SIZE); for (;;) { - char *out = para_malloc(OGGDEC_OUTPUT_CHUNK_SIZE); - ssize_t read_ret = ov_read(pod->vf, out, OGGDEC_OUTPUT_CHUNK_SIZE, + ret = ov_read(pod->vf, buf + have, OGGDEC_OUTPUT_CHUNK_SIZE - have, ENDIAN, 2 /* 16 bit */, 1 /* signed */, NULL); btr_consume(btrn, pod->converted); pod->converted = 0; - if (read_ret <= 0) - free(out); - ret = ns; - if (read_ret == 0 || read_ret == OV_HOLE) - goto out; - ret = -E_OGGDEC_BADLINK; - if (read_ret < 0) - goto out; - btr_add_output(out, read_ret, btrn); - if (btr_get_output_queue_size(btrn) > 128 * 1024) - return; /* enough data for the moment */ + if (ret <= 0) + break; + fn->min_iqs = 0; + have += ret; + if (have < OGGDEC_OUTPUT_CHUNK_SIZE) + continue; + if (btr_get_output_queue_size(btrn) > OGGDEC_MAX_OUTPUT_SIZE) + break; + btr_add_output(buf, have, btrn); + buf = para_malloc(OGGDEC_OUTPUT_CHUNK_SIZE); + have = 0; } + pod->have_more = (ret > 0); + if (have > 0) + btr_add_output(buf, have, btrn); + else + free(buf); + if (ret == OV_HOLE) /* avoid buffer underruns */ + fn->min_iqs = 9000; + if (ret >= 0 || ret == OV_HOLE) + return; + ret = -E_OGGDEC_BADLINK; out: - if (ret < 0) { - t->error = ret; + t->error = ret; + if (ret < 0) btr_remove_node(btrn); - } } /** @@ -245,7 +264,7 @@ void oggdec_filter_init(struct filter *f) { f->open = ogg_open; f->close = ogg_close; - f->pre_select = generic_filter_pre_select; + f->pre_select = ogg_pre_select; f->post_select = ogg_post_select; f->execute = oggdec_execute; }