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🎥 Command line media player
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C
123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149#include "common/common.h"
#include "node.h"
// Init a node with the given format. If parent is not NULL, it is set as// parent allocation according to m_option_type_node rules (which means// the mpv_node_list allocs are used for chaining the TA allocations).// format == MPV_FORMAT_NONE will simply initialize it with all-0.void node_init(struct mpv_node *dst, int format, struct mpv_node *parent){ // Other formats need to be initialized manually. assert(format == MPV_FORMAT_NODE_MAP || format == MPV_FORMAT_NODE_ARRAY || format == MPV_FORMAT_FLAG || format == MPV_FORMAT_INT64 || format == MPV_FORMAT_DOUBLE || format == MPV_FORMAT_BYTE_ARRAY || format == MPV_FORMAT_NONE);
void *ta_parent = NULL; if (parent) { assert(parent->format == MPV_FORMAT_NODE_MAP || parent->format == MPV_FORMAT_NODE_ARRAY); ta_parent = parent->u.list; }
*dst = (struct mpv_node){ .format = format }; if (format == MPV_FORMAT_NODE_MAP || format == MPV_FORMAT_NODE_ARRAY) dst->u.list = talloc_zero(ta_parent, struct mpv_node_list); if (format == MPV_FORMAT_BYTE_ARRAY) dst->u.ba = talloc_zero(ta_parent, struct mpv_byte_array);}
// Add an entry to a MPV_FORMAT_NODE_ARRAY.// m_option_type_node memory management rules apply.struct mpv_node *node_array_add(struct mpv_node *dst, int format){ struct mpv_node_list *list = dst->u.list; assert(dst->format == MPV_FORMAT_NODE_ARRAY && dst->u.list); MP_TARRAY_GROW(list, list->values, list->num); node_init(&list->values[list->num], format, dst); return &list->values[list->num++];}
// Add an entry to a MPV_FORMAT_NODE_MAP. Keep in mind that this does// not check for already existing entries under the same key.// m_option_type_node memory management rules apply.struct mpv_node *node_map_add(struct mpv_node *dst, const char *key, int format){ assert(key);
struct mpv_node_list *list = dst->u.list; assert(dst->format == MPV_FORMAT_NODE_MAP && dst->u.list); MP_TARRAY_GROW(list, list->values, list->num); MP_TARRAY_GROW(list, list->keys, list->num); list->keys[list->num] = talloc_strdup(list, key); node_init(&list->values[list->num], format, dst); return &list->values[list->num++];}
// Add a string entry to a MPV_FORMAT_NODE_MAP. Keep in mind that this does// not check for already existing entries under the same key.// m_option_type_node memory management rules apply.void node_map_add_string(struct mpv_node *dst, const char *key, const char *val){ assert(val);
struct mpv_node *entry = node_map_add(dst, key, MPV_FORMAT_NONE); entry->format = MPV_FORMAT_STRING; entry->u.string = talloc_strdup(dst->u.list, val);}
void node_map_add_int64(struct mpv_node *dst, const char *key, int64_t v){ node_map_add(dst, key, MPV_FORMAT_INT64)->u.int64 = v;}
void node_map_add_double(struct mpv_node *dst, const char *key, double v){ node_map_add(dst, key, MPV_FORMAT_DOUBLE)->u.double_ = v;}
void node_map_add_flag(struct mpv_node *dst, const char *key, bool v){ node_map_add(dst, key, MPV_FORMAT_FLAG)->u.flag = v;}
mpv_node *node_map_get(mpv_node *src, const char *key){ if (src->format != MPV_FORMAT_NODE_MAP) return NULL;
for (int i = 0; i < src->u.list->num; i++) { if (strcmp(key, src->u.list->keys[i]) == 0) return &src->u.list->values[i]; }
return NULL;}
// Note: for MPV_FORMAT_NODE_MAP, this (incorrectly) takes the order into// account, instead of treating it as set.bool equal_mpv_value(const void *a, const void *b, mpv_format format){ switch (format) { case MPV_FORMAT_NONE: return true; case MPV_FORMAT_STRING: case MPV_FORMAT_OSD_STRING: return strcmp(*(char **)a, *(char **)b) == 0; case MPV_FORMAT_FLAG: return *(int *)a == *(int *)b; case MPV_FORMAT_INT64: return *(int64_t *)a == *(int64_t *)b; case MPV_FORMAT_DOUBLE: return *(double *)a == *(double *)b; case MPV_FORMAT_NODE: return equal_mpv_node(a, b); case MPV_FORMAT_BYTE_ARRAY: { const struct mpv_byte_array *a_r = a, *b_r = b; if (a_r->size != b_r->size) return false; return memcmp(a_r->data, b_r->data, a_r->size) == 0; } case MPV_FORMAT_NODE_ARRAY: case MPV_FORMAT_NODE_MAP: { mpv_node_list *l_a = *(mpv_node_list **)a, *l_b = *(mpv_node_list **)b; if (l_a->num != l_b->num) return false; for (int n = 0; n < l_a->num; n++) { if (format == MPV_FORMAT_NODE_MAP) { if (strcmp(l_a->keys[n], l_b->keys[n]) != 0) return false; } if (!equal_mpv_node(&l_a->values[n], &l_b->values[n])) return false; } return true; } } abort(); // supposed to be able to handle all defined types}
// Remarks see equal_mpv_value().bool equal_mpv_node(const struct mpv_node *a, const struct mpv_node *b){ if (a->format != b->format) return false; return equal_mpv_value(&a->u, &b->u, a->format);}